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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tk3d.c,v 1.1.1.1 2001/06/13 04:53:30 dtashley Exp $ */ |
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/* |
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* tk3d.c -- |
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* |
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* This module provides procedures to draw borders in |
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* the three-dimensional Motif style. |
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* |
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* Copyright (c) 1990-1994 The Regents of the University of California. |
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* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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* |
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* See the file "license.terms" for information on usage and redistribution |
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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* |
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* RCS: @(#) $Id: tk3d.c,v 1.1.1.1 2001/06/13 04:53:30 dtashley Exp $ |
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*/ |
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#include "tk3d.h" |
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/* |
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* The following table defines the string values for reliefs, which are |
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* used by Tk_GetReliefFromObj. |
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*/ |
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static char *reliefStrings[] = {"flat", "groove", "raised", "ridge", "solid", |
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"sunken", (char *) NULL}; |
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/* |
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* Forward declarations for procedures defined in this file: |
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*/ |
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static void BorderInit _ANSI_ARGS_((TkDisplay *dispPtr)); |
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static void DupBorderObjProc _ANSI_ARGS_((Tcl_Obj *srcObjPtr, |
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Tcl_Obj *dupObjPtr)); |
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static void FreeBorderObjProc _ANSI_ARGS_((Tcl_Obj *objPtr)); |
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static int Intersect _ANSI_ARGS_((XPoint *a1Ptr, XPoint *a2Ptr, |
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XPoint *b1Ptr, XPoint *b2Ptr, XPoint *iPtr)); |
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static void InitBorderObj _ANSI_ARGS_((Tcl_Obj *objPtr)); |
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static void ShiftLine _ANSI_ARGS_((XPoint *p1Ptr, XPoint *p2Ptr, |
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int distance, XPoint *p3Ptr)); |
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/* |
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* The following structure defines the implementation of the "border" Tcl |
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* object, used for drawing. The border object remembers the hash table entry |
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* associated with a border. The actual allocation and deallocation of the |
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* border should be done by the configuration package when the border option |
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* is set. |
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*/ |
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static Tcl_ObjType borderObjType = { |
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"border", /* name */ |
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FreeBorderObjProc, /* freeIntRepProc */ |
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DupBorderObjProc, /* dupIntRepProc */ |
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NULL, /* updateStringProc */ |
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NULL /* setFromAnyProc */ |
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}; |
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/* |
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*---------------------------------------------------------------------- |
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* |
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* Tk_Alloc3DBorderFromObj -- |
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* |
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* Given a Tcl_Obj *, map the value to a corresponding |
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* Tk_3DBorder structure based on the tkwin given. |
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* |
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* Results: |
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* The return value is a token for a data structure describing a |
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* 3-D border. This token may be passed to procedures such as |
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* Tk_Draw3DRectangle and Tk_Free3DBorder. If an error prevented |
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* the border from being created then NULL is returned and an error |
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* message will be left in the interp's result. |
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* |
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* Side effects: |
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* The border is added to an internal database with a reference |
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* count. For each call to this procedure, there should eventually |
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* be a call to FreeBorderObjProc so that the database is |
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* cleaned up when borders aren't in use anymore. |
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* |
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*---------------------------------------------------------------------- |
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*/ |
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Tk_3DBorder |
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Tk_Alloc3DBorderFromObj(interp, tkwin, objPtr) |
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Tcl_Interp *interp; /* Interp for error results. */ |
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Tk_Window tkwin; /* Need the screen the border is used on.*/ |
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Tcl_Obj *objPtr; /* Object giving name of color for window |
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* background. */ |
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{ |
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TkBorder *borderPtr; |
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if (objPtr->typePtr != &borderObjType) { |
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InitBorderObj(objPtr); |
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} |
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borderPtr = (TkBorder *) objPtr->internalRep.twoPtrValue.ptr1; |
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/* |
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* If the object currently points to a TkBorder, see if it's the |
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* one we want. If so, increment its reference count and return. |
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*/ |
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if (borderPtr != NULL) { |
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if (borderPtr->resourceRefCount == 0) { |
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/* |
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* This is a stale reference: it refers to a border that's |
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* no longer in use. Clear the reference. |
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*/ |
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FreeBorderObjProc(objPtr); |
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borderPtr = NULL; |
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} else if ((Tk_Screen(tkwin) == borderPtr->screen) |
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&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
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borderPtr->resourceRefCount++; |
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return (Tk_3DBorder) borderPtr; |
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} |
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} |
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/* |
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* The object didn't point to the border that we wanted. Search |
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* the list of borders with the same name to see if one of the |
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* others is the right one. |
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*/ |
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/* |
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* If the cached value is NULL, either the object type was not a |
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* color going in, or the object is a color type but had |
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* previously been freed. |
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* |
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* If the value is not NULL, the internal rep is the value |
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* of the color the last time this object was accessed. Check |
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* the screen and colormap of the last access, and if they |
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* match, we are done. |
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*/ |
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if (borderPtr != NULL) { |
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TkBorder *firstBorderPtr = |
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(TkBorder *) Tcl_GetHashValue(borderPtr->hashPtr); |
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FreeBorderObjProc(objPtr); |
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for (borderPtr = firstBorderPtr ; borderPtr != NULL; |
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borderPtr = borderPtr->nextPtr) { |
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if ((Tk_Screen(tkwin) == borderPtr->screen) |
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&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
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borderPtr->resourceRefCount++; |
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borderPtr->objRefCount++; |
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objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
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return (Tk_3DBorder) borderPtr; |
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} |
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} |
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} |
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/* |
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* Still no luck. Call Tk_Get3DBorder to allocate a new border. |
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*/ |
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borderPtr = (TkBorder *) Tk_Get3DBorder(interp, tkwin, |
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Tcl_GetString(objPtr)); |
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objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
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if (borderPtr != NULL) { |
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borderPtr->objRefCount++; |
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} |
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return (Tk_3DBorder) borderPtr; |
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} |
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/* |
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*-------------------------------------------------------------- |
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* |
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* Tk_Get3DBorder -- |
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* |
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* Create a data structure for displaying a 3-D border. |
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* |
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* Results: |
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* The return value is a token for a data structure describing a |
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* 3-D border. This token may be passed to procedures such as |
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* Tk_Draw3DRectangle and Tk_Free3DBorder. If an error prevented |
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* the border from being created then NULL is returned and an error |
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* message will be left in the interp's result. |
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* |
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* Side effects: |
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* Data structures, graphics contexts, etc. are allocated. |
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* It is the caller's responsibility to eventually call |
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* Tk_Free3DBorder to release the resources. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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Tk_3DBorder |
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Tk_Get3DBorder(interp, tkwin, colorName) |
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Tcl_Interp *interp; /* Place to store an error message. */ |
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Tk_Window tkwin; /* Token for window in which border will |
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* be drawn. */ |
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char *colorName; /* String giving name of color |
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* for window background. */ |
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{ |
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Tcl_HashEntry *hashPtr; |
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TkBorder *borderPtr, *existingBorderPtr; |
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int new; |
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XGCValues gcValues; |
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XColor *bgColorPtr; |
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TkDisplay *dispPtr; |
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dispPtr = ((TkWindow *) tkwin)->dispPtr; |
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if (!dispPtr->borderInit) { |
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BorderInit(dispPtr); |
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} |
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hashPtr = Tcl_CreateHashEntry(&dispPtr->borderTable, colorName, &new); |
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if (!new) { |
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existingBorderPtr = (TkBorder *) Tcl_GetHashValue(hashPtr); |
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for (borderPtr = existingBorderPtr; borderPtr != NULL; |
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borderPtr = borderPtr->nextPtr) { |
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if ((Tk_Screen(tkwin) == borderPtr->screen) |
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&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
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borderPtr->resourceRefCount++; |
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return (Tk_3DBorder) borderPtr; |
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} |
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} |
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} else { |
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existingBorderPtr = NULL; |
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} |
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/* |
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* No satisfactory border exists yet. Initialize a new one. |
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*/ |
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bgColorPtr = Tk_GetColor(interp, tkwin, colorName); |
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if (bgColorPtr == NULL) { |
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if (new) { |
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Tcl_DeleteHashEntry(hashPtr); |
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} |
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return NULL; |
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} |
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borderPtr = TkpGetBorder(); |
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borderPtr->screen = Tk_Screen(tkwin); |
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borderPtr->visual = Tk_Visual(tkwin); |
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borderPtr->depth = Tk_Depth(tkwin); |
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borderPtr->colormap = Tk_Colormap(tkwin); |
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borderPtr->resourceRefCount = 1; |
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borderPtr->objRefCount = 0; |
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borderPtr->bgColorPtr = bgColorPtr; |
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borderPtr->darkColorPtr = NULL; |
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borderPtr->lightColorPtr = NULL; |
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borderPtr->shadow = None; |
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borderPtr->bgGC = None; |
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borderPtr->darkGC = None; |
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borderPtr->lightGC = None; |
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borderPtr->hashPtr = hashPtr; |
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borderPtr->nextPtr = existingBorderPtr; |
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Tcl_SetHashValue(hashPtr, borderPtr); |
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/* |
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* Create the information for displaying the background color, |
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* but delay the allocation of shadows until they are actually |
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* needed for drawing. |
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*/ |
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gcValues.foreground = borderPtr->bgColorPtr->pixel; |
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borderPtr->bgGC = Tk_GetGC(tkwin, GCForeground, &gcValues); |
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return (Tk_3DBorder) borderPtr; |
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} |
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/* |
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*-------------------------------------------------------------- |
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* |
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* Tk_Draw3DRectangle -- |
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* |
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* Draw a 3-D border at a given place in a given window. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* A 3-D border will be drawn in the indicated drawable. |
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* The outside edges of the border will be determined by x, |
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* y, width, and height. The inside edges of the border |
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* will be determined by the borderWidth argument. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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void |
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Tk_Draw3DRectangle(tkwin, drawable, border, x, y, width, height, |
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borderWidth, relief) |
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Tk_Window tkwin; /* Window for which border was allocated. */ |
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Drawable drawable; /* X window or pixmap in which to draw. */ |
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Tk_3DBorder border; /* Token for border to draw. */ |
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int x, y, width, height; /* Outside area of region in |
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* which border will be drawn. */ |
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int borderWidth; /* Desired width for border, in |
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* pixels. */ |
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int relief; /* Type of relief: TK_RELIEF_RAISED, |
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* TK_RELIEF_SUNKEN, TK_RELIEF_GROOVE, etc. */ |
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{ |
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if (width < 2*borderWidth) { |
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borderWidth = width/2; |
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} |
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if (height < 2*borderWidth) { |
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borderWidth = height/2; |
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} |
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Tk_3DVerticalBevel(tkwin, drawable, border, x, y, borderWidth, height, |
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1, relief); |
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Tk_3DVerticalBevel(tkwin, drawable, border, x+width-borderWidth, y, |
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borderWidth, height, 0, relief); |
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Tk_3DHorizontalBevel(tkwin, drawable, border, x, y, width, borderWidth, |
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1, 1, 1, relief); |
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Tk_3DHorizontalBevel(tkwin, drawable, border, x, y+height-borderWidth, |
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width, borderWidth, 0, 0, 0, relief); |
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} |
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/* |
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*-------------------------------------------------------------- |
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* |
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* Tk_NameOf3DBorder -- |
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* |
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* Given a border, return a textual string identifying the |
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* border's color. |
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* |
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* Results: |
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* The return value is the string that was used to create |
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* the border. |
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* |
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* Side effects: |
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* None. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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char * |
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Tk_NameOf3DBorder(border) |
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Tk_3DBorder border; /* Token for border. */ |
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{ |
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TkBorder *borderPtr = (TkBorder *) border; |
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return borderPtr->hashPtr->key.string; |
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} |
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/* |
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*-------------------------------------------------------------------- |
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* |
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* Tk_3DBorderColor -- |
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* |
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* Given a 3D border, return the X color used for the "flat" |
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* surfaces. |
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* |
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* Results: |
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* Returns the color used drawing flat surfaces with the border. |
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* |
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* Side effects: |
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* None. |
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* |
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*-------------------------------------------------------------------- |
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*/ |
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XColor * |
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Tk_3DBorderColor(border) |
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Tk_3DBorder border; /* Border whose color is wanted. */ |
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{ |
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return(((TkBorder *) border)->bgColorPtr); |
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} |
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/* |
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*-------------------------------------------------------------------- |
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* |
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* Tk_3DBorderGC -- |
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* |
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* Given a 3D border, returns one of the graphics contexts used to |
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* draw the border. |
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* |
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* Results: |
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* Returns the graphics context given by the "which" argument. |
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* |
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* Side effects: |
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* None. |
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* |
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*-------------------------------------------------------------------- |
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*/ |
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GC |
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Tk_3DBorderGC(tkwin, border, which) |
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Tk_Window tkwin; /* Window for which border was allocated. */ |
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Tk_3DBorder border; /* Border whose GC is wanted. */ |
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int which; /* Selects one of the border's 3 GC's: |
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* TK_3D_FLAT_GC, TK_3D_LIGHT_GC, or |
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* TK_3D_DARK_GC. */ |
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{ |
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TkBorder * borderPtr = (TkBorder *) border; |
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if ((borderPtr->lightGC == None) && (which != TK_3D_FLAT_GC)) { |
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TkpGetShadows(borderPtr, tkwin); |
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} |
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if (which == TK_3D_FLAT_GC) { |
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return borderPtr->bgGC; |
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} else if (which == TK_3D_LIGHT_GC) { |
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return borderPtr->lightGC; |
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} else if (which == TK_3D_DARK_GC){ |
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return borderPtr->darkGC; |
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} |
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panic("bogus \"which\" value in Tk_3DBorderGC"); |
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/* |
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* The code below will never be executed, but it's needed to |
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* keep compilers happy. |
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*/ |
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return (GC) None; |
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} |
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/* |
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*-------------------------------------------------------------- |
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* |
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* Tk_Free3DBorder -- |
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* |
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* This procedure is called when a 3D border is no longer |
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* needed. It frees the resources associated with the |
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* border. After this call, the caller should never again |
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* use the "border" token. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* Resources are freed. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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void |
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Tk_Free3DBorder(border) |
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Tk_3DBorder border; /* Token for border to be released. */ |
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{ |
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TkBorder *borderPtr = (TkBorder *) border; |
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Display *display = DisplayOfScreen(borderPtr->screen); |
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TkBorder *prevPtr; |
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borderPtr->resourceRefCount--; |
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if (borderPtr->resourceRefCount > 0) { |
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return; |
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} |
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prevPtr = (TkBorder *) Tcl_GetHashValue(borderPtr->hashPtr); |
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TkpFreeBorder(borderPtr); |
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if (borderPtr->bgColorPtr != NULL) { |
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Tk_FreeColor(borderPtr->bgColorPtr); |
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} |
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if (borderPtr->darkColorPtr != NULL) { |
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Tk_FreeColor(borderPtr->darkColorPtr); |
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} |
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if (borderPtr->lightColorPtr != NULL) { |
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Tk_FreeColor(borderPtr->lightColorPtr); |
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} |
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if (borderPtr->shadow != None) { |
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Tk_FreeBitmap(display, borderPtr->shadow); |
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} |
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if (borderPtr->bgGC != None) { |
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Tk_FreeGC(display, borderPtr->bgGC); |
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} |
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if (borderPtr->darkGC != None) { |
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Tk_FreeGC(display, borderPtr->darkGC); |
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} |
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if (borderPtr->lightGC != None) { |
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Tk_FreeGC(display, borderPtr->lightGC); |
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} |
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if (prevPtr == borderPtr) { |
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if (borderPtr->nextPtr == NULL) { |
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Tcl_DeleteHashEntry(borderPtr->hashPtr); |
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} else { |
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Tcl_SetHashValue(borderPtr->hashPtr, borderPtr->nextPtr); |
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} |
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} else { |
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while (prevPtr->nextPtr != borderPtr) { |
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prevPtr = prevPtr->nextPtr; |
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} |
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prevPtr->nextPtr = borderPtr->nextPtr; |
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} |
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if (borderPtr->objRefCount == 0) { |
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ckfree((char *) borderPtr); |
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} |
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} |
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|
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/* |
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*---------------------------------------------------------------------- |
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* |
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* Tk_Free3DBorderFromObj -- |
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|
* |
|
|
* This procedure is called to release a border allocated by |
|
|
* Tk_Alloc3DBorderFromObj. It does not throw away the Tcl_Obj *; |
|
|
* it only gets rid of the hash table entry for this border |
|
|
* and clears the cached value that is normally stored in the object. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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|
* The reference count associated with the border represented by |
|
|
* objPtr is decremented, and the border's resources are released |
|
|
* to X if there are no remaining uses for it. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tk_Free3DBorderFromObj(tkwin, objPtr) |
|
|
Tk_Window tkwin; /* The window this border lives in. Needed |
|
|
* for the screen and colormap values. */ |
|
|
Tcl_Obj *objPtr; /* The Tcl_Obj * to be freed. */ |
|
|
{ |
|
|
Tk_Free3DBorder(Tk_Get3DBorderFromObj(tkwin, objPtr)); |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* FreeBorderObjProc -- |
|
|
* |
|
|
* This proc is called to release an object reference to a border. |
|
|
* Called when the object's internal rep is released or when |
|
|
* the cached borderPtr needs to be changed. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The object reference count is decremented. When both it |
|
|
* and the hash ref count go to zero, the border's resources |
|
|
* are released. |
|
|
* |
|
|
*--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
FreeBorderObjProc(objPtr) |
|
|
Tcl_Obj *objPtr; /* The object we are releasing. */ |
|
|
{ |
|
|
TkBorder *borderPtr = (TkBorder *) objPtr->internalRep.twoPtrValue.ptr1; |
|
|
|
|
|
if (borderPtr != NULL) { |
|
|
borderPtr->objRefCount--; |
|
|
if ((borderPtr->objRefCount == 0) |
|
|
&& (borderPtr->resourceRefCount == 0)) { |
|
|
ckfree((char *) borderPtr); |
|
|
} |
|
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) NULL; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* DupBorderObjProc -- |
|
|
* |
|
|
* When a cached border object is duplicated, this is called to |
|
|
* update the internal reps. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The border's objRefCount is incremented and the internal rep |
|
|
* of the copy is set to point to it. |
|
|
* |
|
|
*--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
DupBorderObjProc(srcObjPtr, dupObjPtr) |
|
|
Tcl_Obj *srcObjPtr; /* The object we are copying from. */ |
|
|
Tcl_Obj *dupObjPtr; /* The object we are copying to. */ |
|
|
{ |
|
|
TkBorder *borderPtr = (TkBorder *) srcObjPtr->internalRep.twoPtrValue.ptr1; |
|
|
|
|
|
dupObjPtr->typePtr = srcObjPtr->typePtr; |
|
|
dupObjPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
|
|
|
|
|
if (borderPtr != NULL) { |
|
|
borderPtr->objRefCount++; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tk_SetBackgroundFromBorder -- |
|
|
* |
|
|
* Change the background of a window to one appropriate for a given |
|
|
* 3-D border. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Tkwin's background gets modified. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tk_SetBackgroundFromBorder(tkwin, border) |
|
|
Tk_Window tkwin; /* Window whose background is to be set. */ |
|
|
Tk_3DBorder border; /* Token for border. */ |
|
|
{ |
|
|
register TkBorder *borderPtr = (TkBorder *) border; |
|
|
|
|
|
Tk_SetWindowBackground(tkwin, borderPtr->bgColorPtr->pixel); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tk_GetReliefFromObj -- |
|
|
* |
|
|
* Return an integer value based on the value of the objPtr. |
|
|
* |
|
|
* Results: |
|
|
* The return value is a standard Tcl result. If an error occurs during |
|
|
* conversion, an error message is left in the interpreter's result |
|
|
* unless "interp" is NULL. |
|
|
* |
|
|
* Side effects: |
|
|
* The object gets converted by Tcl_GetIndexFromObj. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tk_GetReliefFromObj(interp, objPtr, resultPtr) |
|
|
Tcl_Interp *interp; /* Used for error reporting. */ |
|
|
Tcl_Obj *objPtr; /* The object we are trying to get the |
|
|
* value from. */ |
|
|
int *resultPtr; /* Where to place the answer. */ |
|
|
{ |
|
|
return Tcl_GetIndexFromObj(interp, objPtr, reliefStrings, "relief", 0, |
|
|
resultPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tk_GetRelief -- |
|
|
* |
|
|
* Parse a relief description and return the corresponding |
|
|
* relief value, or an error. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl return value. If all goes well then |
|
|
* *reliefPtr is filled in with one of the values |
|
|
* TK_RELIEF_RAISED, TK_RELIEF_FLAT, or TK_RELIEF_SUNKEN. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tk_GetRelief(interp, name, reliefPtr) |
|
|
Tcl_Interp *interp; /* For error messages. */ |
|
|
char *name; /* Name of a relief type. */ |
|
|
int *reliefPtr; /* Where to store converted relief. */ |
|
|
{ |
|
|
char c; |
|
|
size_t length; |
|
|
|
|
|
c = name[0]; |
|
|
length = strlen(name); |
|
|
if ((c == 'f') && (strncmp(name, "flat", length) == 0)) { |
|
|
*reliefPtr = TK_RELIEF_FLAT; |
|
|
} else if ((c == 'g') && (strncmp(name, "groove", length) == 0) |
|
|
&& (length >= 2)) { |
|
|
*reliefPtr = TK_RELIEF_GROOVE; |
|
|
} else if ((c == 'r') && (strncmp(name, "raised", length) == 0) |
|
|
&& (length >= 2)) { |
|
|
*reliefPtr = TK_RELIEF_RAISED; |
|
|
} else if ((c == 'r') && (strncmp(name, "ridge", length) == 0)) { |
|
|
*reliefPtr = TK_RELIEF_RIDGE; |
|
|
} else if ((c == 's') && (strncmp(name, "solid", length) == 0)) { |
|
|
*reliefPtr = TK_RELIEF_SOLID; |
|
|
} else if ((c == 's') && (strncmp(name, "sunken", length) == 0)) { |
|
|
*reliefPtr = TK_RELIEF_SUNKEN; |
|
|
} else { |
|
|
char buf[200]; |
|
|
|
|
|
sprintf(buf, "bad relief type \"%.50s\": must be %s", |
|
|
name, "flat, groove, raised, ridge, solid, or sunken"); |
|
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* Tk_NameOfRelief -- |
|
|
* |
|
|
* Given a relief value, produce a string describing that |
|
|
* relief value. |
|
|
* |
|
|
* Results: |
|
|
* The return value is a static string that is equivalent |
|
|
* to relief. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
char * |
|
|
Tk_NameOfRelief(relief) |
|
|
int relief; /* One of TK_RELIEF_FLAT, TK_RELIEF_RAISED, |
|
|
* or TK_RELIEF_SUNKEN. */ |
|
|
{ |
|
|
if (relief == TK_RELIEF_FLAT) { |
|
|
return "flat"; |
|
|
} else if (relief == TK_RELIEF_SUNKEN) { |
|
|
return "sunken"; |
|
|
} else if (relief == TK_RELIEF_RAISED) { |
|
|
return "raised"; |
|
|
} else if (relief == TK_RELIEF_GROOVE) { |
|
|
return "groove"; |
|
|
} else if (relief == TK_RELIEF_RIDGE) { |
|
|
return "ridge"; |
|
|
} else if (relief == TK_RELIEF_SOLID) { |
|
|
return "solid"; |
|
|
} else { |
|
|
return "unknown relief"; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* Tk_Draw3DPolygon -- |
|
|
* |
|
|
* Draw a border with 3-D appearance around the edge of a |
|
|
* given polygon. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Information is drawn in "drawable" in the form of a |
|
|
* 3-D border borderWidth units width wide on the left |
|
|
* of the trajectory given by pointPtr and numPoints (or |
|
|
* -borderWidth units wide on the right side, if borderWidth |
|
|
* is negative). |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
|
|
borderWidth, leftRelief) |
|
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
|
|
Drawable drawable; /* X window or pixmap in which to draw. */ |
|
|
Tk_3DBorder border; /* Token for border to draw. */ |
|
|
XPoint *pointPtr; /* Array of points describing |
|
|
* polygon. All points must be |
|
|
* absolute (CoordModeOrigin). */ |
|
|
int numPoints; /* Number of points at *pointPtr. */ |
|
|
int borderWidth; /* Width of border, measured in |
|
|
* pixels to the left of the polygon's |
|
|
* trajectory. May be negative. */ |
|
|
int leftRelief; /* TK_RELIEF_RAISED or |
|
|
* TK_RELIEF_SUNKEN: indicates how |
|
|
* stuff to left of trajectory looks |
|
|
* relative to stuff on right. */ |
|
|
{ |
|
|
XPoint poly[4], b1, b2, newB1, newB2; |
|
|
XPoint perp, c, shift1, shift2; /* Used for handling parallel lines. */ |
|
|
register XPoint *p1Ptr, *p2Ptr; |
|
|
TkBorder *borderPtr = (TkBorder *) border; |
|
|
GC gc; |
|
|
int i, lightOnLeft, dx, dy, parallel, pointsSeen; |
|
|
Display *display = Tk_Display(tkwin); |
|
|
|
|
|
if (borderPtr->lightGC == None) { |
|
|
TkpGetShadows(borderPtr, tkwin); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Handle grooves and ridges with recursive calls. |
|
|
*/ |
|
|
|
|
|
if ((leftRelief == TK_RELIEF_GROOVE) || (leftRelief == TK_RELIEF_RIDGE)) { |
|
|
int halfWidth; |
|
|
|
|
|
halfWidth = borderWidth/2; |
|
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
|
|
halfWidth, (leftRelief == TK_RELIEF_GROOVE) ? TK_RELIEF_RAISED |
|
|
: TK_RELIEF_SUNKEN); |
|
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
|
|
-halfWidth, (leftRelief == TK_RELIEF_GROOVE) ? TK_RELIEF_SUNKEN |
|
|
: TK_RELIEF_RAISED); |
|
|
return; |
|
|
} |
|
|
|
|
|
/* |
|
|
* If the polygon is already closed, drop the last point from it |
|
|
* (we'll close it automatically). |
|
|
*/ |
|
|
|
|
|
p1Ptr = &pointPtr[numPoints-1]; |
|
|
p2Ptr = &pointPtr[0]; |
|
|
if ((p1Ptr->x == p2Ptr->x) && (p1Ptr->y == p2Ptr->y)) { |
|
|
numPoints--; |
|
|
} |
|
|
|
|
|
/* |
|
|
* The loop below is executed once for each vertex in the polgon. |
|
|
* At the beginning of each iteration things look like this: |
|
|
* |
|
|
* poly[1] / |
|
|
* * / |
|
|
* | / |
|
|
* b1 * poly[0] (pointPtr[i-1]) |
|
|
* | | |
|
|
* | | |
|
|
* | | |
|
|
* | | |
|
|
* | | |
|
|
* | | *p1Ptr *p2Ptr |
|
|
* b2 *--------------------* |
|
|
* | |
|
|
* | |
|
|
* x------------------------- |
|
|
* |
|
|
* The job of this iteration is to do the following: |
|
|
* (a) Compute x (the border corner corresponding to |
|
|
* pointPtr[i]) and put it in poly[2]. As part of |
|
|
* this, compute a new b1 and b2 value for the next |
|
|
* side of the polygon. |
|
|
* (b) Put pointPtr[i] into poly[3]. |
|
|
* (c) Draw the polygon given by poly[0..3]. |
|
|
* (d) Advance poly[0], poly[1], b1, and b2 for the |
|
|
* next side of the polygon. |
|
|
*/ |
|
|
|
|
|
/* |
|
|
* The above situation doesn't first come into existence until |
|
|
* two points have been processed; the first two points are |
|
|
* used to "prime the pump", so some parts of the processing |
|
|
* are ommitted for these points. The variable "pointsSeen" |
|
|
* keeps track of the priming process; it has to be separate |
|
|
* from i in order to be able to ignore duplicate points in the |
|
|
* polygon. |
|
|
*/ |
|
|
|
|
|
pointsSeen = 0; |
|
|
for (i = -2, p1Ptr = &pointPtr[numPoints-2], p2Ptr = p1Ptr+1; |
|
|
i < numPoints; i++, p1Ptr = p2Ptr, p2Ptr++) { |
|
|
if ((i == -1) || (i == numPoints-1)) { |
|
|
p2Ptr = pointPtr; |
|
|
} |
|
|
if ((p2Ptr->x == p1Ptr->x) && (p2Ptr->y == p1Ptr->y)) { |
|
|
/* |
|
|
* Ignore duplicate points (they'd cause core dumps in |
|
|
* ShiftLine calls below). |
|
|
*/ |
|
|
continue; |
|
|
} |
|
|
ShiftLine(p1Ptr, p2Ptr, borderWidth, &newB1); |
|
|
newB2.x = newB1.x + (p2Ptr->x - p1Ptr->x); |
|
|
newB2.y = newB1.y + (p2Ptr->y - p1Ptr->y); |
|
|
poly[3] = *p1Ptr; |
|
|
parallel = 0; |
|
|
if (pointsSeen >= 1) { |
|
|
parallel = Intersect(&newB1, &newB2, &b1, &b2, &poly[2]); |
|
|
|
|
|
/* |
|
|
* If two consecutive segments of the polygon are parallel, |
|
|
* then things get more complex. Consider the following |
|
|
* diagram: |
|
|
* |
|
|
* poly[1] |
|
|
* *----b1-----------b2------a |
|
|
* \ |
|
|
* \ |
|
|
* *---------*----------* b |
|
|
* poly[0] *p2Ptr *p1Ptr / |
|
|
* / |
|
|
* --*--------*----c |
|
|
* newB1 newB2 |
|
|
* |
|
|
* Instead of using x and *p1Ptr for poly[2] and poly[3], as |
|
|
* in the original diagram, use a and b as above. Then instead |
|
|
* of using x and *p1Ptr for the new poly[0] and poly[1], use |
|
|
* b and c as above. |
|
|
* |
|
|
* Do the computation in three stages: |
|
|
* 1. Compute a point "perp" such that the line p1Ptr-perp |
|
|
* is perpendicular to p1Ptr-p2Ptr. |
|
|
* 2. Compute the points a and c by intersecting the lines |
|
|
* b1-b2 and newB1-newB2 with p1Ptr-perp. |
|
|
* 3. Compute b by shifting p1Ptr-perp to the right and |
|
|
* intersecting it with p1Ptr-p2Ptr. |
|
|
*/ |
|
|
|
|
|
if (parallel) { |
|
|
perp.x = p1Ptr->x + (p2Ptr->y - p1Ptr->y); |
|
|
perp.y = p1Ptr->y - (p2Ptr->x - p1Ptr->x); |
|
|
(void) Intersect(p1Ptr, &perp, &b1, &b2, &poly[2]); |
|
|
(void) Intersect(p1Ptr, &perp, &newB1, &newB2, &c); |
|
|
ShiftLine(p1Ptr, &perp, borderWidth, &shift1); |
|
|
shift2.x = shift1.x + (perp.x - p1Ptr->x); |
|
|
shift2.y = shift1.y + (perp.y - p1Ptr->y); |
|
|
(void) Intersect(p1Ptr, p2Ptr, &shift1, &shift2, &poly[3]); |
|
|
} |
|
|
} |
|
|
if (pointsSeen >= 2) { |
|
|
dx = poly[3].x - poly[0].x; |
|
|
dy = poly[3].y - poly[0].y; |
|
|
if (dx > 0) { |
|
|
lightOnLeft = (dy <= dx); |
|
|
} else { |
|
|
lightOnLeft = (dy < dx); |
|
|
} |
|
|
if (lightOnLeft ^ (leftRelief == TK_RELIEF_RAISED)) { |
|
|
gc = borderPtr->lightGC; |
|
|
} else { |
|
|
gc = borderPtr->darkGC; |
|
|
} |
|
|
XFillPolygon(display, drawable, gc, poly, 4, Convex, |
|
|
CoordModeOrigin); |
|
|
} |
|
|
b1.x = newB1.x; |
|
|
b1.y = newB1.y; |
|
|
b2.x = newB2.x; |
|
|
b2.y = newB2.y; |
|
|
poly[0].x = poly[3].x; |
|
|
poly[0].y = poly[3].y; |
|
|
if (parallel) { |
|
|
poly[1].x = c.x; |
|
|
poly[1].y = c.y; |
|
|
} else if (pointsSeen >= 1) { |
|
|
poly[1].x = poly[2].x; |
|
|
poly[1].y = poly[2].y; |
|
|
} |
|
|
pointsSeen++; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tk_Fill3DRectangle -- |
|
|
* |
|
|
* Fill a rectangular area, supplying a 3D border if desired. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Information gets drawn on the screen. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tk_Fill3DRectangle(tkwin, drawable, border, x, y, width, |
|
|
height, borderWidth, relief) |
|
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
|
|
Drawable drawable; /* X window or pixmap in which to draw. */ |
|
|
Tk_3DBorder border; /* Token for border to draw. */ |
|
|
int x, y, width, height; /* Outside area of rectangular region. */ |
|
|
int borderWidth; /* Desired width for border, in |
|
|
* pixels. Border will be *inside* region. */ |
|
|
int relief; /* Indicates 3D effect: TK_RELIEF_FLAT, |
|
|
* TK_RELIEF_RAISED, or TK_RELIEF_SUNKEN. */ |
|
|
{ |
|
|
register TkBorder *borderPtr = (TkBorder *) border; |
|
|
int doubleBorder; |
|
|
|
|
|
/* |
|
|
* This code is slightly tricky because it only draws the background |
|
|
* in areas not covered by the 3D border. This avoids flashing |
|
|
* effects on the screen for the border region. |
|
|
*/ |
|
|
|
|
|
if (relief == TK_RELIEF_FLAT) { |
|
|
borderWidth = 0; |
|
|
} else { |
|
|
/* |
|
|
* We need to make this extra check, otherwise we will leave |
|
|
* garbage in thin frames [Bug: 3596] |
|
|
*/ |
|
|
if (width < 2*borderWidth) { |
|
|
borderWidth = width/2; |
|
|
} |
|
|
if (height < 2*borderWidth) { |
|
|
borderWidth = height/2; |
|
|
} |
|
|
} |
|
|
doubleBorder = 2*borderWidth; |
|
|
|
|
|
if ((width > doubleBorder) && (height > doubleBorder)) { |
|
|
XFillRectangle(Tk_Display(tkwin), drawable, borderPtr->bgGC, |
|
|
x + borderWidth, y + borderWidth, |
|
|
(unsigned int) (width - doubleBorder), |
|
|
(unsigned int) (height - doubleBorder)); |
|
|
} |
|
|
if (borderWidth) { |
|
|
Tk_Draw3DRectangle(tkwin, drawable, border, x, y, width, |
|
|
height, borderWidth, relief); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tk_Fill3DPolygon -- |
|
|
* |
|
|
* Fill a polygonal area, supplying a 3D border if desired. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Information gets drawn on the screen. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tk_Fill3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
|
|
borderWidth, leftRelief) |
|
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
|
|
Drawable drawable; /* X window or pixmap in which to draw. */ |
|
|
Tk_3DBorder border; /* Token for border to draw. */ |
|
|
XPoint *pointPtr; /* Array of points describing |
|
|
* polygon. All points must be |
|
|
* absolute (CoordModeOrigin). */ |
|
|
int numPoints; /* Number of points at *pointPtr. */ |
|
|
int borderWidth; /* Width of border, measured in |
|
|
* pixels to the left of the polygon's |
|
|
* trajectory. May be negative. */ |
|
|
int leftRelief; /* Indicates 3D effect of left side of |
|
|
* trajectory relative to right: |
|
|
* TK_RELIEF_FLAT, TK_RELIEF_RAISED, |
|
|
* or TK_RELIEF_SUNKEN. */ |
|
|
{ |
|
|
register TkBorder *borderPtr = (TkBorder *) border; |
|
|
|
|
|
XFillPolygon(Tk_Display(tkwin), drawable, borderPtr->bgGC, |
|
|
pointPtr, numPoints, Complex, CoordModeOrigin); |
|
|
if (leftRelief != TK_RELIEF_FLAT) { |
|
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
|
|
borderWidth, leftRelief); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* BorderInit -- |
|
|
* |
|
|
* Initialize the structures used for border management. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Read the code. |
|
|
* |
|
|
*------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
BorderInit(dispPtr) |
|
|
TkDisplay * dispPtr; /* Used to access thread-specific data. */ |
|
|
{ |
|
|
dispPtr->borderInit = 1; |
|
|
Tcl_InitHashTable(&dispPtr->borderTable, TCL_STRING_KEYS); |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* ShiftLine -- |
|
|
* |
|
|
* Given two points on a line, compute a point on a |
|
|
* new line that is parallel to the given line and |
|
|
* a given distance away from it. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
ShiftLine(p1Ptr, p2Ptr, distance, p3Ptr) |
|
|
XPoint *p1Ptr; /* First point on line. */ |
|
|
XPoint *p2Ptr; /* Second point on line. */ |
|
|
int distance; /* New line is to be this many |
|
|
* units to the left of original |
|
|
* line, when looking from p1 to |
|
|
* p2. May be negative. */ |
|
|
XPoint *p3Ptr; /* Store coords of point on new |
|
|
* line here. */ |
|
|
{ |
|
|
int dx, dy, dxNeg, dyNeg; |
|
|
|
|
|
/* |
|
|
* The table below is used for a quick approximation in |
|
|
* computing the new point. An index into the table |
|
|
* is 128 times the slope of the original line (the slope |
|
|
* must always be between 0 and 1). The value of the table |
|
|
* entry is 128 times the amount to displace the new line |
|
|
* in y for each unit of perpendicular distance. In other |
|
|
* words, the table maps from the tangent of an angle to |
|
|
* the inverse of its cosine. If the slope of the original |
|
|
* line is greater than 1, then the displacement is done in |
|
|
* x rather than in y. |
|
|
*/ |
|
|
|
|
|
static int shiftTable[129]; |
|
|
|
|
|
/* |
|
|
* Initialize the table if this is the first time it is |
|
|
* used. |
|
|
*/ |
|
|
|
|
|
if (shiftTable[0] == 0) { |
|
|
int i; |
|
|
double tangent, cosine; |
|
|
|
|
|
for (i = 0; i <= 128; i++) { |
|
|
tangent = i/128.0; |
|
|
cosine = 128/cos(atan(tangent)) + .5; |
|
|
shiftTable[i] = (int) cosine; |
|
|
} |
|
|
} |
|
|
|
|
|
*p3Ptr = *p1Ptr; |
|
|
dx = p2Ptr->x - p1Ptr->x; |
|
|
dy = p2Ptr->y - p1Ptr->y; |
|
|
if (dy < 0) { |
|
|
dyNeg = 1; |
|
|
dy = -dy; |
|
|
} else { |
|
|
dyNeg = 0; |
|
|
} |
|
|
if (dx < 0) { |
|
|
dxNeg = 1; |
|
|
dx = -dx; |
|
|
} else { |
|
|
dxNeg = 0; |
|
|
} |
|
|
if (dy <= dx) { |
|
|
dy = ((distance * shiftTable[(dy<<7)/dx]) + 64) >> 7; |
|
|
if (!dxNeg) { |
|
|
dy = -dy; |
|
|
} |
|
|
p3Ptr->y += dy; |
|
|
} else { |
|
|
dx = ((distance * shiftTable[(dx<<7)/dy]) + 64) >> 7; |
|
|
if (dyNeg) { |
|
|
dx = -dx; |
|
|
} |
|
|
p3Ptr->x += dx; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* Intersect -- |
|
|
* |
|
|
* Find the intersection point between two lines. |
|
|
* |
|
|
* Results: |
|
|
* Under normal conditions 0 is returned and the point |
|
|
* at *iPtr is filled in with the intersection between |
|
|
* the two lines. If the two lines are parallel, then |
|
|
* -1 is returned and *iPtr isn't modified. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
Intersect(a1Ptr, a2Ptr, b1Ptr, b2Ptr, iPtr) |
|
|
XPoint *a1Ptr; /* First point of first line. */ |
|
|
XPoint *a2Ptr; /* Second point of first line. */ |
|
|
XPoint *b1Ptr; /* First point of second line. */ |
|
|
XPoint *b2Ptr; /* Second point of second line. */ |
|
|
XPoint *iPtr; /* Filled in with intersection point. */ |
|
|
{ |
|
|
int dxadyb, dxbdya, dxadxb, dyadyb, p, q; |
|
|
|
|
|
/* |
|
|
* The code below is just a straightforward manipulation of two |
|
|
* equations of the form y = (x-x1)*(y2-y1)/(x2-x1) + y1 to solve |
|
|
* for the x-coordinate of intersection, then the y-coordinate. |
|
|
*/ |
|
|
|
|
|
dxadyb = (a2Ptr->x - a1Ptr->x)*(b2Ptr->y - b1Ptr->y); |
|
|
dxbdya = (b2Ptr->x - b1Ptr->x)*(a2Ptr->y - a1Ptr->y); |
|
|
dxadxb = (a2Ptr->x - a1Ptr->x)*(b2Ptr->x - b1Ptr->x); |
|
|
dyadyb = (a2Ptr->y - a1Ptr->y)*(b2Ptr->y - b1Ptr->y); |
|
|
|
|
|
if (dxadyb == dxbdya) { |
|
|
return -1; |
|
|
} |
|
|
p = (a1Ptr->x*dxbdya - b1Ptr->x*dxadyb + (b1Ptr->y - a1Ptr->y)*dxadxb); |
|
|
q = dxbdya - dxadyb; |
|
|
if (q < 0) { |
|
|
p = -p; |
|
|
q = -q; |
|
|
} |
|
|
if (p < 0) { |
|
|
iPtr->x = - ((-p + q/2)/q); |
|
|
} else { |
|
|
iPtr->x = (p + q/2)/q; |
|
|
} |
|
|
p = (a1Ptr->y*dxadyb - b1Ptr->y*dxbdya + (b1Ptr->x - a1Ptr->x)*dyadyb); |
|
|
q = dxadyb - dxbdya; |
|
|
if (q < 0) { |
|
|
p = -p; |
|
|
q = -q; |
|
|
} |
|
|
if (p < 0) { |
|
|
iPtr->y = - ((-p + q/2)/q); |
|
|
} else { |
|
|
iPtr->y = (p + q/2)/q; |
|
|
} |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tk_Get3DBorderFromObj -- |
|
|
* |
|
|
* Returns the border referred to by a Tcl object. The border must |
|
|
* already have been allocated via a call to Tk_Alloc3DBorderFromObj |
|
|
* or Tk_Get3DBorder. |
|
|
* |
|
|
* Results: |
|
|
* Returns the Tk_3DBorder that matches the tkwin and the string rep |
|
|
* of the name of the border given in objPtr. |
|
|
* |
|
|
* Side effects: |
|
|
* If the object is not already a border, the conversion will free |
|
|
* any old internal representation. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tk_3DBorder |
|
|
Tk_Get3DBorderFromObj(tkwin, objPtr) |
|
|
Tk_Window tkwin; |
|
|
Tcl_Obj *objPtr; /* The object whose string value selects |
|
|
* a border. */ |
|
|
{ |
|
|
TkBorder *borderPtr = NULL; |
|
|
Tcl_HashEntry *hashPtr; |
|
|
TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr; |
|
|
|
|
|
if (objPtr->typePtr != &borderObjType) { |
|
|
InitBorderObj(objPtr); |
|
|
} |
|
|
|
|
|
borderPtr = (TkBorder *) objPtr->internalRep.twoPtrValue.ptr1; |
|
|
if (borderPtr != NULL) { |
|
|
if ((borderPtr->resourceRefCount > 0) |
|
|
&& (Tk_Screen(tkwin) == borderPtr->screen) |
|
|
&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
|
|
/* |
|
|
* The object already points to the right border structure. |
|
|
* Just return it. |
|
|
*/ |
|
|
|
|
|
return (Tk_3DBorder) borderPtr; |
|
|
} |
|
|
hashPtr = borderPtr->hashPtr; |
|
|
FreeBorderObjProc(objPtr); |
|
|
} else { |
|
|
hashPtr = Tcl_FindHashEntry(&dispPtr->borderTable, |
|
|
Tcl_GetString(objPtr)); |
|
|
if (hashPtr == NULL) { |
|
|
goto error; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* At this point we've got a hash table entry, off of which hang |
|
|
* one or more TkBorder structures. See if any of them will work. |
|
|
*/ |
|
|
|
|
|
for (borderPtr = (TkBorder *) Tcl_GetHashValue(hashPtr); |
|
|
(borderPtr != NULL); borderPtr = borderPtr->nextPtr) { |
|
|
if ((Tk_Screen(tkwin) == borderPtr->screen) |
|
|
&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
|
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
|
|
borderPtr->objRefCount++; |
|
|
return (Tk_3DBorder) borderPtr; |
|
|
} |
|
|
} |
|
|
|
|
|
error: |
|
|
panic("Tk_Get3DBorderFromObj called with non-existent border!"); |
|
|
/* |
|
|
* The following code isn't reached; it's just there to please compilers. |
|
|
*/ |
|
|
return NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* InitBorderObj -- |
|
|
* |
|
|
* Attempt to generate a border internal form for the Tcl object |
|
|
* "objPtr". |
|
|
* |
|
|
* Results: |
|
|
* The return value is a standard Tcl result. If an error occurs during |
|
|
* conversion, an error message is left in the interpreter's result |
|
|
* unless "interp" is NULL. |
|
|
* |
|
|
* Side effects: |
|
|
* If no error occurs, a blank internal format for a border value |
|
|
* is intialized. The final form cannot be done without a Tk_Window. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
InitBorderObj(objPtr) |
|
|
Tcl_Obj *objPtr; /* The object to convert. */ |
|
|
{ |
|
|
Tcl_ObjType *typePtr; |
|
|
|
|
|
/* |
|
|
* Free the old internalRep before setting the new one. |
|
|
*/ |
|
|
|
|
|
Tcl_GetString(objPtr); |
|
|
typePtr = objPtr->typePtr; |
|
|
if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) { |
|
|
(*typePtr->freeIntRepProc)(objPtr); |
|
|
} |
|
|
objPtr->typePtr = &borderObjType; |
|
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TkDebugBorder -- |
|
|
* |
|
|
* This procedure returns debugging information about a border. |
|
|
* |
|
|
* Results: |
|
|
* The return value is a list with one sublist for each TkBorder |
|
|
* corresponding to "name". Each sublist has two elements that |
|
|
* contain the resourceRefCount and objRefCount fields from the |
|
|
* TkBorder structure. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tcl_Obj * |
|
|
TkDebugBorder(tkwin, name) |
|
|
Tk_Window tkwin; /* The window in which the border will be |
|
|
* used (not currently used). */ |
|
|
char *name; /* Name of the desired color. */ |
|
|
{ |
|
|
TkBorder *borderPtr; |
|
|
Tcl_HashEntry *hashPtr; |
|
|
Tcl_Obj *resultPtr, *objPtr; |
|
|
TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr; |
|
|
|
|
|
resultPtr = Tcl_NewObj(); |
|
|
hashPtr = Tcl_FindHashEntry(&dispPtr->borderTable, name); |
|
|
if (hashPtr != NULL) { |
|
|
borderPtr = (TkBorder *) Tcl_GetHashValue(hashPtr); |
|
|
if (borderPtr == NULL) { |
|
|
panic("TkDebugBorder found empty hash table entry"); |
|
|
} |
|
|
for ( ; (borderPtr != NULL); borderPtr = borderPtr->nextPtr) { |
|
|
objPtr = Tcl_NewObj(); |
|
|
Tcl_ListObjAppendElement(NULL, objPtr, |
|
|
Tcl_NewIntObj(borderPtr->resourceRefCount)); |
|
|
Tcl_ListObjAppendElement(NULL, objPtr, |
|
|
Tcl_NewIntObj(borderPtr->objRefCount)); |
|
|
Tcl_ListObjAppendElement(NULL, resultPtr, objPtr); |
|
|
} |
|
|
} |
|
|
return resultPtr; |
|
|
} |
|
|
|
|
|
|
|
|
/* $History: tk3d.c $ |
|
|
* |
|
|
* ***************** Version 1 ***************** |
|
|
* User: Dtashley Date: 1/02/01 Time: 2:32a |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tk Base |
|
|
* Initial check-in. |
|
|
*/ |
|
|
|
|
|
/* End of TK3D.C */ |
|
| 1 |
|
/* $Header$ */ |
| 2 |
|
|
| 3 |
|
/* |
| 4 |
|
* tk3d.c -- |
| 5 |
|
* |
| 6 |
|
* This module provides procedures to draw borders in |
| 7 |
|
* the three-dimensional Motif style. |
| 8 |
|
* |
| 9 |
|
* Copyright (c) 1990-1994 The Regents of the University of California. |
| 10 |
|
* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
| 11 |
|
* |
| 12 |
|
* See the file "license.terms" for information on usage and redistribution |
| 13 |
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 14 |
|
* |
| 15 |
|
* RCS: @(#) $Id: tk3d.c,v 1.1.1.1 2001/06/13 04:53:30 dtashley Exp $ |
| 16 |
|
*/ |
| 17 |
|
|
| 18 |
|
#include "tk3d.h" |
| 19 |
|
|
| 20 |
|
/* |
| 21 |
|
* The following table defines the string values for reliefs, which are |
| 22 |
|
* used by Tk_GetReliefFromObj. |
| 23 |
|
*/ |
| 24 |
|
|
| 25 |
|
static char *reliefStrings[] = {"flat", "groove", "raised", "ridge", "solid", |
| 26 |
|
"sunken", (char *) NULL}; |
| 27 |
|
|
| 28 |
|
/* |
| 29 |
|
* Forward declarations for procedures defined in this file: |
| 30 |
|
*/ |
| 31 |
|
|
| 32 |
|
static void BorderInit _ANSI_ARGS_((TkDisplay *dispPtr)); |
| 33 |
|
static void DupBorderObjProc _ANSI_ARGS_((Tcl_Obj *srcObjPtr, |
| 34 |
|
Tcl_Obj *dupObjPtr)); |
| 35 |
|
static void FreeBorderObjProc _ANSI_ARGS_((Tcl_Obj *objPtr)); |
| 36 |
|
static int Intersect _ANSI_ARGS_((XPoint *a1Ptr, XPoint *a2Ptr, |
| 37 |
|
XPoint *b1Ptr, XPoint *b2Ptr, XPoint *iPtr)); |
| 38 |
|
static void InitBorderObj _ANSI_ARGS_((Tcl_Obj *objPtr)); |
| 39 |
|
static void ShiftLine _ANSI_ARGS_((XPoint *p1Ptr, XPoint *p2Ptr, |
| 40 |
|
int distance, XPoint *p3Ptr)); |
| 41 |
|
|
| 42 |
|
/* |
| 43 |
|
* The following structure defines the implementation of the "border" Tcl |
| 44 |
|
* object, used for drawing. The border object remembers the hash table entry |
| 45 |
|
* associated with a border. The actual allocation and deallocation of the |
| 46 |
|
* border should be done by the configuration package when the border option |
| 47 |
|
* is set. |
| 48 |
|
*/ |
| 49 |
|
|
| 50 |
|
static Tcl_ObjType borderObjType = { |
| 51 |
|
"border", /* name */ |
| 52 |
|
FreeBorderObjProc, /* freeIntRepProc */ |
| 53 |
|
DupBorderObjProc, /* dupIntRepProc */ |
| 54 |
|
NULL, /* updateStringProc */ |
| 55 |
|
NULL /* setFromAnyProc */ |
| 56 |
|
}; |
| 57 |
|
|
| 58 |
|
/* |
| 59 |
|
*---------------------------------------------------------------------- |
| 60 |
|
* |
| 61 |
|
* Tk_Alloc3DBorderFromObj -- |
| 62 |
|
* |
| 63 |
|
* Given a Tcl_Obj *, map the value to a corresponding |
| 64 |
|
* Tk_3DBorder structure based on the tkwin given. |
| 65 |
|
* |
| 66 |
|
* Results: |
| 67 |
|
* The return value is a token for a data structure describing a |
| 68 |
|
* 3-D border. This token may be passed to procedures such as |
| 69 |
|
* Tk_Draw3DRectangle and Tk_Free3DBorder. If an error prevented |
| 70 |
|
* the border from being created then NULL is returned and an error |
| 71 |
|
* message will be left in the interp's result. |
| 72 |
|
* |
| 73 |
|
* Side effects: |
| 74 |
|
* The border is added to an internal database with a reference |
| 75 |
|
* count. For each call to this procedure, there should eventually |
| 76 |
|
* be a call to FreeBorderObjProc so that the database is |
| 77 |
|
* cleaned up when borders aren't in use anymore. |
| 78 |
|
* |
| 79 |
|
*---------------------------------------------------------------------- |
| 80 |
|
*/ |
| 81 |
|
|
| 82 |
|
Tk_3DBorder |
| 83 |
|
Tk_Alloc3DBorderFromObj(interp, tkwin, objPtr) |
| 84 |
|
Tcl_Interp *interp; /* Interp for error results. */ |
| 85 |
|
Tk_Window tkwin; /* Need the screen the border is used on.*/ |
| 86 |
|
Tcl_Obj *objPtr; /* Object giving name of color for window |
| 87 |
|
* background. */ |
| 88 |
|
{ |
| 89 |
|
TkBorder *borderPtr; |
| 90 |
|
|
| 91 |
|
if (objPtr->typePtr != &borderObjType) { |
| 92 |
|
InitBorderObj(objPtr); |
| 93 |
|
} |
| 94 |
|
borderPtr = (TkBorder *) objPtr->internalRep.twoPtrValue.ptr1; |
| 95 |
|
|
| 96 |
|
/* |
| 97 |
|
* If the object currently points to a TkBorder, see if it's the |
| 98 |
|
* one we want. If so, increment its reference count and return. |
| 99 |
|
*/ |
| 100 |
|
|
| 101 |
|
if (borderPtr != NULL) { |
| 102 |
|
if (borderPtr->resourceRefCount == 0) { |
| 103 |
|
/* |
| 104 |
|
* This is a stale reference: it refers to a border that's |
| 105 |
|
* no longer in use. Clear the reference. |
| 106 |
|
*/ |
| 107 |
|
|
| 108 |
|
FreeBorderObjProc(objPtr); |
| 109 |
|
borderPtr = NULL; |
| 110 |
|
} else if ((Tk_Screen(tkwin) == borderPtr->screen) |
| 111 |
|
&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
| 112 |
|
borderPtr->resourceRefCount++; |
| 113 |
|
return (Tk_3DBorder) borderPtr; |
| 114 |
|
} |
| 115 |
|
} |
| 116 |
|
|
| 117 |
|
/* |
| 118 |
|
* The object didn't point to the border that we wanted. Search |
| 119 |
|
* the list of borders with the same name to see if one of the |
| 120 |
|
* others is the right one. |
| 121 |
|
*/ |
| 122 |
|
|
| 123 |
|
/* |
| 124 |
|
* If the cached value is NULL, either the object type was not a |
| 125 |
|
* color going in, or the object is a color type but had |
| 126 |
|
* previously been freed. |
| 127 |
|
* |
| 128 |
|
* If the value is not NULL, the internal rep is the value |
| 129 |
|
* of the color the last time this object was accessed. Check |
| 130 |
|
* the screen and colormap of the last access, and if they |
| 131 |
|
* match, we are done. |
| 132 |
|
*/ |
| 133 |
|
|
| 134 |
|
if (borderPtr != NULL) { |
| 135 |
|
TkBorder *firstBorderPtr = |
| 136 |
|
(TkBorder *) Tcl_GetHashValue(borderPtr->hashPtr); |
| 137 |
|
FreeBorderObjProc(objPtr); |
| 138 |
|
for (borderPtr = firstBorderPtr ; borderPtr != NULL; |
| 139 |
|
borderPtr = borderPtr->nextPtr) { |
| 140 |
|
if ((Tk_Screen(tkwin) == borderPtr->screen) |
| 141 |
|
&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
| 142 |
|
borderPtr->resourceRefCount++; |
| 143 |
|
borderPtr->objRefCount++; |
| 144 |
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
| 145 |
|
return (Tk_3DBorder) borderPtr; |
| 146 |
|
} |
| 147 |
|
} |
| 148 |
|
} |
| 149 |
|
|
| 150 |
|
/* |
| 151 |
|
* Still no luck. Call Tk_Get3DBorder to allocate a new border. |
| 152 |
|
*/ |
| 153 |
|
|
| 154 |
|
borderPtr = (TkBorder *) Tk_Get3DBorder(interp, tkwin, |
| 155 |
|
Tcl_GetString(objPtr)); |
| 156 |
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
| 157 |
|
if (borderPtr != NULL) { |
| 158 |
|
borderPtr->objRefCount++; |
| 159 |
|
} |
| 160 |
|
return (Tk_3DBorder) borderPtr; |
| 161 |
|
} |
| 162 |
|
|
| 163 |
|
/* |
| 164 |
|
*-------------------------------------------------------------- |
| 165 |
|
* |
| 166 |
|
* Tk_Get3DBorder -- |
| 167 |
|
* |
| 168 |
|
* Create a data structure for displaying a 3-D border. |
| 169 |
|
* |
| 170 |
|
* Results: |
| 171 |
|
* The return value is a token for a data structure describing a |
| 172 |
|
* 3-D border. This token may be passed to procedures such as |
| 173 |
|
* Tk_Draw3DRectangle and Tk_Free3DBorder. If an error prevented |
| 174 |
|
* the border from being created then NULL is returned and an error |
| 175 |
|
* message will be left in the interp's result. |
| 176 |
|
* |
| 177 |
|
* Side effects: |
| 178 |
|
* Data structures, graphics contexts, etc. are allocated. |
| 179 |
|
* It is the caller's responsibility to eventually call |
| 180 |
|
* Tk_Free3DBorder to release the resources. |
| 181 |
|
* |
| 182 |
|
*-------------------------------------------------------------- |
| 183 |
|
*/ |
| 184 |
|
|
| 185 |
|
Tk_3DBorder |
| 186 |
|
Tk_Get3DBorder(interp, tkwin, colorName) |
| 187 |
|
Tcl_Interp *interp; /* Place to store an error message. */ |
| 188 |
|
Tk_Window tkwin; /* Token for window in which border will |
| 189 |
|
* be drawn. */ |
| 190 |
|
char *colorName; /* String giving name of color |
| 191 |
|
* for window background. */ |
| 192 |
|
{ |
| 193 |
|
Tcl_HashEntry *hashPtr; |
| 194 |
|
TkBorder *borderPtr, *existingBorderPtr; |
| 195 |
|
int new; |
| 196 |
|
XGCValues gcValues; |
| 197 |
|
XColor *bgColorPtr; |
| 198 |
|
TkDisplay *dispPtr; |
| 199 |
|
|
| 200 |
|
dispPtr = ((TkWindow *) tkwin)->dispPtr; |
| 201 |
|
|
| 202 |
|
if (!dispPtr->borderInit) { |
| 203 |
|
BorderInit(dispPtr); |
| 204 |
|
} |
| 205 |
|
|
| 206 |
|
hashPtr = Tcl_CreateHashEntry(&dispPtr->borderTable, colorName, &new); |
| 207 |
|
if (!new) { |
| 208 |
|
existingBorderPtr = (TkBorder *) Tcl_GetHashValue(hashPtr); |
| 209 |
|
for (borderPtr = existingBorderPtr; borderPtr != NULL; |
| 210 |
|
borderPtr = borderPtr->nextPtr) { |
| 211 |
|
if ((Tk_Screen(tkwin) == borderPtr->screen) |
| 212 |
|
&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
| 213 |
|
borderPtr->resourceRefCount++; |
| 214 |
|
return (Tk_3DBorder) borderPtr; |
| 215 |
|
} |
| 216 |
|
} |
| 217 |
|
} else { |
| 218 |
|
existingBorderPtr = NULL; |
| 219 |
|
} |
| 220 |
|
|
| 221 |
|
/* |
| 222 |
|
* No satisfactory border exists yet. Initialize a new one. |
| 223 |
|
*/ |
| 224 |
|
|
| 225 |
|
bgColorPtr = Tk_GetColor(interp, tkwin, colorName); |
| 226 |
|
if (bgColorPtr == NULL) { |
| 227 |
|
if (new) { |
| 228 |
|
Tcl_DeleteHashEntry(hashPtr); |
| 229 |
|
} |
| 230 |
|
return NULL; |
| 231 |
|
} |
| 232 |
|
|
| 233 |
|
borderPtr = TkpGetBorder(); |
| 234 |
|
borderPtr->screen = Tk_Screen(tkwin); |
| 235 |
|
borderPtr->visual = Tk_Visual(tkwin); |
| 236 |
|
borderPtr->depth = Tk_Depth(tkwin); |
| 237 |
|
borderPtr->colormap = Tk_Colormap(tkwin); |
| 238 |
|
borderPtr->resourceRefCount = 1; |
| 239 |
|
borderPtr->objRefCount = 0; |
| 240 |
|
borderPtr->bgColorPtr = bgColorPtr; |
| 241 |
|
borderPtr->darkColorPtr = NULL; |
| 242 |
|
borderPtr->lightColorPtr = NULL; |
| 243 |
|
borderPtr->shadow = None; |
| 244 |
|
borderPtr->bgGC = None; |
| 245 |
|
borderPtr->darkGC = None; |
| 246 |
|
borderPtr->lightGC = None; |
| 247 |
|
borderPtr->hashPtr = hashPtr; |
| 248 |
|
borderPtr->nextPtr = existingBorderPtr; |
| 249 |
|
Tcl_SetHashValue(hashPtr, borderPtr); |
| 250 |
|
|
| 251 |
|
/* |
| 252 |
|
* Create the information for displaying the background color, |
| 253 |
|
* but delay the allocation of shadows until they are actually |
| 254 |
|
* needed for drawing. |
| 255 |
|
*/ |
| 256 |
|
|
| 257 |
|
gcValues.foreground = borderPtr->bgColorPtr->pixel; |
| 258 |
|
borderPtr->bgGC = Tk_GetGC(tkwin, GCForeground, &gcValues); |
| 259 |
|
return (Tk_3DBorder) borderPtr; |
| 260 |
|
} |
| 261 |
|
|
| 262 |
|
/* |
| 263 |
|
*-------------------------------------------------------------- |
| 264 |
|
* |
| 265 |
|
* Tk_Draw3DRectangle -- |
| 266 |
|
* |
| 267 |
|
* Draw a 3-D border at a given place in a given window. |
| 268 |
|
* |
| 269 |
|
* Results: |
| 270 |
|
* None. |
| 271 |
|
* |
| 272 |
|
* Side effects: |
| 273 |
|
* A 3-D border will be drawn in the indicated drawable. |
| 274 |
|
* The outside edges of the border will be determined by x, |
| 275 |
|
* y, width, and height. The inside edges of the border |
| 276 |
|
* will be determined by the borderWidth argument. |
| 277 |
|
* |
| 278 |
|
*-------------------------------------------------------------- |
| 279 |
|
*/ |
| 280 |
|
|
| 281 |
|
void |
| 282 |
|
Tk_Draw3DRectangle(tkwin, drawable, border, x, y, width, height, |
| 283 |
|
borderWidth, relief) |
| 284 |
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
| 285 |
|
Drawable drawable; /* X window or pixmap in which to draw. */ |
| 286 |
|
Tk_3DBorder border; /* Token for border to draw. */ |
| 287 |
|
int x, y, width, height; /* Outside area of region in |
| 288 |
|
* which border will be drawn. */ |
| 289 |
|
int borderWidth; /* Desired width for border, in |
| 290 |
|
* pixels. */ |
| 291 |
|
int relief; /* Type of relief: TK_RELIEF_RAISED, |
| 292 |
|
* TK_RELIEF_SUNKEN, TK_RELIEF_GROOVE, etc. */ |
| 293 |
|
{ |
| 294 |
|
if (width < 2*borderWidth) { |
| 295 |
|
borderWidth = width/2; |
| 296 |
|
} |
| 297 |
|
if (height < 2*borderWidth) { |
| 298 |
|
borderWidth = height/2; |
| 299 |
|
} |
| 300 |
|
Tk_3DVerticalBevel(tkwin, drawable, border, x, y, borderWidth, height, |
| 301 |
|
1, relief); |
| 302 |
|
Tk_3DVerticalBevel(tkwin, drawable, border, x+width-borderWidth, y, |
| 303 |
|
borderWidth, height, 0, relief); |
| 304 |
|
Tk_3DHorizontalBevel(tkwin, drawable, border, x, y, width, borderWidth, |
| 305 |
|
1, 1, 1, relief); |
| 306 |
|
Tk_3DHorizontalBevel(tkwin, drawable, border, x, y+height-borderWidth, |
| 307 |
|
width, borderWidth, 0, 0, 0, relief); |
| 308 |
|
} |
| 309 |
|
|
| 310 |
|
/* |
| 311 |
|
*-------------------------------------------------------------- |
| 312 |
|
* |
| 313 |
|
* Tk_NameOf3DBorder -- |
| 314 |
|
* |
| 315 |
|
* Given a border, return a textual string identifying the |
| 316 |
|
* border's color. |
| 317 |
|
* |
| 318 |
|
* Results: |
| 319 |
|
* The return value is the string that was used to create |
| 320 |
|
* the border. |
| 321 |
|
* |
| 322 |
|
* Side effects: |
| 323 |
|
* None. |
| 324 |
|
* |
| 325 |
|
*-------------------------------------------------------------- |
| 326 |
|
*/ |
| 327 |
|
|
| 328 |
|
char * |
| 329 |
|
Tk_NameOf3DBorder(border) |
| 330 |
|
Tk_3DBorder border; /* Token for border. */ |
| 331 |
|
{ |
| 332 |
|
TkBorder *borderPtr = (TkBorder *) border; |
| 333 |
|
|
| 334 |
|
return borderPtr->hashPtr->key.string; |
| 335 |
|
} |
| 336 |
|
|
| 337 |
|
/* |
| 338 |
|
*-------------------------------------------------------------------- |
| 339 |
|
* |
| 340 |
|
* Tk_3DBorderColor -- |
| 341 |
|
* |
| 342 |
|
* Given a 3D border, return the X color used for the "flat" |
| 343 |
|
* surfaces. |
| 344 |
|
* |
| 345 |
|
* Results: |
| 346 |
|
* Returns the color used drawing flat surfaces with the border. |
| 347 |
|
* |
| 348 |
|
* Side effects: |
| 349 |
|
* None. |
| 350 |
|
* |
| 351 |
|
*-------------------------------------------------------------------- |
| 352 |
|
*/ |
| 353 |
|
XColor * |
| 354 |
|
Tk_3DBorderColor(border) |
| 355 |
|
Tk_3DBorder border; /* Border whose color is wanted. */ |
| 356 |
|
{ |
| 357 |
|
return(((TkBorder *) border)->bgColorPtr); |
| 358 |
|
} |
| 359 |
|
|
| 360 |
|
/* |
| 361 |
|
*-------------------------------------------------------------------- |
| 362 |
|
* |
| 363 |
|
* Tk_3DBorderGC -- |
| 364 |
|
* |
| 365 |
|
* Given a 3D border, returns one of the graphics contexts used to |
| 366 |
|
* draw the border. |
| 367 |
|
* |
| 368 |
|
* Results: |
| 369 |
|
* Returns the graphics context given by the "which" argument. |
| 370 |
|
* |
| 371 |
|
* Side effects: |
| 372 |
|
* None. |
| 373 |
|
* |
| 374 |
|
*-------------------------------------------------------------------- |
| 375 |
|
*/ |
| 376 |
|
GC |
| 377 |
|
Tk_3DBorderGC(tkwin, border, which) |
| 378 |
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
| 379 |
|
Tk_3DBorder border; /* Border whose GC is wanted. */ |
| 380 |
|
int which; /* Selects one of the border's 3 GC's: |
| 381 |
|
* TK_3D_FLAT_GC, TK_3D_LIGHT_GC, or |
| 382 |
|
* TK_3D_DARK_GC. */ |
| 383 |
|
{ |
| 384 |
|
TkBorder * borderPtr = (TkBorder *) border; |
| 385 |
|
|
| 386 |
|
if ((borderPtr->lightGC == None) && (which != TK_3D_FLAT_GC)) { |
| 387 |
|
TkpGetShadows(borderPtr, tkwin); |
| 388 |
|
} |
| 389 |
|
if (which == TK_3D_FLAT_GC) { |
| 390 |
|
return borderPtr->bgGC; |
| 391 |
|
} else if (which == TK_3D_LIGHT_GC) { |
| 392 |
|
return borderPtr->lightGC; |
| 393 |
|
} else if (which == TK_3D_DARK_GC){ |
| 394 |
|
return borderPtr->darkGC; |
| 395 |
|
} |
| 396 |
|
panic("bogus \"which\" value in Tk_3DBorderGC"); |
| 397 |
|
|
| 398 |
|
/* |
| 399 |
|
* The code below will never be executed, but it's needed to |
| 400 |
|
* keep compilers happy. |
| 401 |
|
*/ |
| 402 |
|
|
| 403 |
|
return (GC) None; |
| 404 |
|
} |
| 405 |
|
|
| 406 |
|
/* |
| 407 |
|
*-------------------------------------------------------------- |
| 408 |
|
* |
| 409 |
|
* Tk_Free3DBorder -- |
| 410 |
|
* |
| 411 |
|
* This procedure is called when a 3D border is no longer |
| 412 |
|
* needed. It frees the resources associated with the |
| 413 |
|
* border. After this call, the caller should never again |
| 414 |
|
* use the "border" token. |
| 415 |
|
* |
| 416 |
|
* Results: |
| 417 |
|
* None. |
| 418 |
|
* |
| 419 |
|
* Side effects: |
| 420 |
|
* Resources are freed. |
| 421 |
|
* |
| 422 |
|
*-------------------------------------------------------------- |
| 423 |
|
*/ |
| 424 |
|
|
| 425 |
|
void |
| 426 |
|
Tk_Free3DBorder(border) |
| 427 |
|
Tk_3DBorder border; /* Token for border to be released. */ |
| 428 |
|
{ |
| 429 |
|
TkBorder *borderPtr = (TkBorder *) border; |
| 430 |
|
Display *display = DisplayOfScreen(borderPtr->screen); |
| 431 |
|
TkBorder *prevPtr; |
| 432 |
|
|
| 433 |
|
borderPtr->resourceRefCount--; |
| 434 |
|
if (borderPtr->resourceRefCount > 0) { |
| 435 |
|
return; |
| 436 |
|
} |
| 437 |
|
|
| 438 |
|
prevPtr = (TkBorder *) Tcl_GetHashValue(borderPtr->hashPtr); |
| 439 |
|
TkpFreeBorder(borderPtr); |
| 440 |
|
if (borderPtr->bgColorPtr != NULL) { |
| 441 |
|
Tk_FreeColor(borderPtr->bgColorPtr); |
| 442 |
|
} |
| 443 |
|
if (borderPtr->darkColorPtr != NULL) { |
| 444 |
|
Tk_FreeColor(borderPtr->darkColorPtr); |
| 445 |
|
} |
| 446 |
|
if (borderPtr->lightColorPtr != NULL) { |
| 447 |
|
Tk_FreeColor(borderPtr->lightColorPtr); |
| 448 |
|
} |
| 449 |
|
if (borderPtr->shadow != None) { |
| 450 |
|
Tk_FreeBitmap(display, borderPtr->shadow); |
| 451 |
|
} |
| 452 |
|
if (borderPtr->bgGC != None) { |
| 453 |
|
Tk_FreeGC(display, borderPtr->bgGC); |
| 454 |
|
} |
| 455 |
|
if (borderPtr->darkGC != None) { |
| 456 |
|
Tk_FreeGC(display, borderPtr->darkGC); |
| 457 |
|
} |
| 458 |
|
if (borderPtr->lightGC != None) { |
| 459 |
|
Tk_FreeGC(display, borderPtr->lightGC); |
| 460 |
|
} |
| 461 |
|
if (prevPtr == borderPtr) { |
| 462 |
|
if (borderPtr->nextPtr == NULL) { |
| 463 |
|
Tcl_DeleteHashEntry(borderPtr->hashPtr); |
| 464 |
|
} else { |
| 465 |
|
Tcl_SetHashValue(borderPtr->hashPtr, borderPtr->nextPtr); |
| 466 |
|
} |
| 467 |
|
} else { |
| 468 |
|
while (prevPtr->nextPtr != borderPtr) { |
| 469 |
|
prevPtr = prevPtr->nextPtr; |
| 470 |
|
} |
| 471 |
|
prevPtr->nextPtr = borderPtr->nextPtr; |
| 472 |
|
} |
| 473 |
|
if (borderPtr->objRefCount == 0) { |
| 474 |
|
ckfree((char *) borderPtr); |
| 475 |
|
} |
| 476 |
|
} |
| 477 |
|
|
| 478 |
|
/* |
| 479 |
|
*---------------------------------------------------------------------- |
| 480 |
|
* |
| 481 |
|
* Tk_Free3DBorderFromObj -- |
| 482 |
|
* |
| 483 |
|
* This procedure is called to release a border allocated by |
| 484 |
|
* Tk_Alloc3DBorderFromObj. It does not throw away the Tcl_Obj *; |
| 485 |
|
* it only gets rid of the hash table entry for this border |
| 486 |
|
* and clears the cached value that is normally stored in the object. |
| 487 |
|
* |
| 488 |
|
* Results: |
| 489 |
|
* None. |
| 490 |
|
* |
| 491 |
|
* Side effects: |
| 492 |
|
* The reference count associated with the border represented by |
| 493 |
|
* objPtr is decremented, and the border's resources are released |
| 494 |
|
* to X if there are no remaining uses for it. |
| 495 |
|
* |
| 496 |
|
*---------------------------------------------------------------------- |
| 497 |
|
*/ |
| 498 |
|
|
| 499 |
|
void |
| 500 |
|
Tk_Free3DBorderFromObj(tkwin, objPtr) |
| 501 |
|
Tk_Window tkwin; /* The window this border lives in. Needed |
| 502 |
|
* for the screen and colormap values. */ |
| 503 |
|
Tcl_Obj *objPtr; /* The Tcl_Obj * to be freed. */ |
| 504 |
|
{ |
| 505 |
|
Tk_Free3DBorder(Tk_Get3DBorderFromObj(tkwin, objPtr)); |
| 506 |
|
} |
| 507 |
|
|
| 508 |
|
/* |
| 509 |
|
*--------------------------------------------------------------------------- |
| 510 |
|
* |
| 511 |
|
* FreeBorderObjProc -- |
| 512 |
|
* |
| 513 |
|
* This proc is called to release an object reference to a border. |
| 514 |
|
* Called when the object's internal rep is released or when |
| 515 |
|
* the cached borderPtr needs to be changed. |
| 516 |
|
* |
| 517 |
|
* Results: |
| 518 |
|
* None. |
| 519 |
|
* |
| 520 |
|
* Side effects: |
| 521 |
|
* The object reference count is decremented. When both it |
| 522 |
|
* and the hash ref count go to zero, the border's resources |
| 523 |
|
* are released. |
| 524 |
|
* |
| 525 |
|
*--------------------------------------------------------------------------- |
| 526 |
|
*/ |
| 527 |
|
|
| 528 |
|
static void |
| 529 |
|
FreeBorderObjProc(objPtr) |
| 530 |
|
Tcl_Obj *objPtr; /* The object we are releasing. */ |
| 531 |
|
{ |
| 532 |
|
TkBorder *borderPtr = (TkBorder *) objPtr->internalRep.twoPtrValue.ptr1; |
| 533 |
|
|
| 534 |
|
if (borderPtr != NULL) { |
| 535 |
|
borderPtr->objRefCount--; |
| 536 |
|
if ((borderPtr->objRefCount == 0) |
| 537 |
|
&& (borderPtr->resourceRefCount == 0)) { |
| 538 |
|
ckfree((char *) borderPtr); |
| 539 |
|
} |
| 540 |
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) NULL; |
| 541 |
|
} |
| 542 |
|
} |
| 543 |
|
|
| 544 |
|
/* |
| 545 |
|
*--------------------------------------------------------------------------- |
| 546 |
|
* |
| 547 |
|
* DupBorderObjProc -- |
| 548 |
|
* |
| 549 |
|
* When a cached border object is duplicated, this is called to |
| 550 |
|
* update the internal reps. |
| 551 |
|
* |
| 552 |
|
* Results: |
| 553 |
|
* None. |
| 554 |
|
* |
| 555 |
|
* Side effects: |
| 556 |
|
* The border's objRefCount is incremented and the internal rep |
| 557 |
|
* of the copy is set to point to it. |
| 558 |
|
* |
| 559 |
|
*--------------------------------------------------------------------------- |
| 560 |
|
*/ |
| 561 |
|
|
| 562 |
|
static void |
| 563 |
|
DupBorderObjProc(srcObjPtr, dupObjPtr) |
| 564 |
|
Tcl_Obj *srcObjPtr; /* The object we are copying from. */ |
| 565 |
|
Tcl_Obj *dupObjPtr; /* The object we are copying to. */ |
| 566 |
|
{ |
| 567 |
|
TkBorder *borderPtr = (TkBorder *) srcObjPtr->internalRep.twoPtrValue.ptr1; |
| 568 |
|
|
| 569 |
|
dupObjPtr->typePtr = srcObjPtr->typePtr; |
| 570 |
|
dupObjPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
| 571 |
|
|
| 572 |
|
if (borderPtr != NULL) { |
| 573 |
|
borderPtr->objRefCount++; |
| 574 |
|
} |
| 575 |
|
} |
| 576 |
|
|
| 577 |
|
/* |
| 578 |
|
*---------------------------------------------------------------------- |
| 579 |
|
* |
| 580 |
|
* Tk_SetBackgroundFromBorder -- |
| 581 |
|
* |
| 582 |
|
* Change the background of a window to one appropriate for a given |
| 583 |
|
* 3-D border. |
| 584 |
|
* |
| 585 |
|
* Results: |
| 586 |
|
* None. |
| 587 |
|
* |
| 588 |
|
* Side effects: |
| 589 |
|
* Tkwin's background gets modified. |
| 590 |
|
* |
| 591 |
|
*---------------------------------------------------------------------- |
| 592 |
|
*/ |
| 593 |
|
|
| 594 |
|
void |
| 595 |
|
Tk_SetBackgroundFromBorder(tkwin, border) |
| 596 |
|
Tk_Window tkwin; /* Window whose background is to be set. */ |
| 597 |
|
Tk_3DBorder border; /* Token for border. */ |
| 598 |
|
{ |
| 599 |
|
register TkBorder *borderPtr = (TkBorder *) border; |
| 600 |
|
|
| 601 |
|
Tk_SetWindowBackground(tkwin, borderPtr->bgColorPtr->pixel); |
| 602 |
|
} |
| 603 |
|
|
| 604 |
|
/* |
| 605 |
|
*---------------------------------------------------------------------- |
| 606 |
|
* |
| 607 |
|
* Tk_GetReliefFromObj -- |
| 608 |
|
* |
| 609 |
|
* Return an integer value based on the value of the objPtr. |
| 610 |
|
* |
| 611 |
|
* Results: |
| 612 |
|
* The return value is a standard Tcl result. If an error occurs during |
| 613 |
|
* conversion, an error message is left in the interpreter's result |
| 614 |
|
* unless "interp" is NULL. |
| 615 |
|
* |
| 616 |
|
* Side effects: |
| 617 |
|
* The object gets converted by Tcl_GetIndexFromObj. |
| 618 |
|
* |
| 619 |
|
*---------------------------------------------------------------------- |
| 620 |
|
*/ |
| 621 |
|
|
| 622 |
|
int |
| 623 |
|
Tk_GetReliefFromObj(interp, objPtr, resultPtr) |
| 624 |
|
Tcl_Interp *interp; /* Used for error reporting. */ |
| 625 |
|
Tcl_Obj *objPtr; /* The object we are trying to get the |
| 626 |
|
* value from. */ |
| 627 |
|
int *resultPtr; /* Where to place the answer. */ |
| 628 |
|
{ |
| 629 |
|
return Tcl_GetIndexFromObj(interp, objPtr, reliefStrings, "relief", 0, |
| 630 |
|
resultPtr); |
| 631 |
|
} |
| 632 |
|
|
| 633 |
|
/* |
| 634 |
|
*---------------------------------------------------------------------- |
| 635 |
|
* |
| 636 |
|
* Tk_GetRelief -- |
| 637 |
|
* |
| 638 |
|
* Parse a relief description and return the corresponding |
| 639 |
|
* relief value, or an error. |
| 640 |
|
* |
| 641 |
|
* Results: |
| 642 |
|
* A standard Tcl return value. If all goes well then |
| 643 |
|
* *reliefPtr is filled in with one of the values |
| 644 |
|
* TK_RELIEF_RAISED, TK_RELIEF_FLAT, or TK_RELIEF_SUNKEN. |
| 645 |
|
* |
| 646 |
|
* Side effects: |
| 647 |
|
* None. |
| 648 |
|
* |
| 649 |
|
*---------------------------------------------------------------------- |
| 650 |
|
*/ |
| 651 |
|
|
| 652 |
|
int |
| 653 |
|
Tk_GetRelief(interp, name, reliefPtr) |
| 654 |
|
Tcl_Interp *interp; /* For error messages. */ |
| 655 |
|
char *name; /* Name of a relief type. */ |
| 656 |
|
int *reliefPtr; /* Where to store converted relief. */ |
| 657 |
|
{ |
| 658 |
|
char c; |
| 659 |
|
size_t length; |
| 660 |
|
|
| 661 |
|
c = name[0]; |
| 662 |
|
length = strlen(name); |
| 663 |
|
if ((c == 'f') && (strncmp(name, "flat", length) == 0)) { |
| 664 |
|
*reliefPtr = TK_RELIEF_FLAT; |
| 665 |
|
} else if ((c == 'g') && (strncmp(name, "groove", length) == 0) |
| 666 |
|
&& (length >= 2)) { |
| 667 |
|
*reliefPtr = TK_RELIEF_GROOVE; |
| 668 |
|
} else if ((c == 'r') && (strncmp(name, "raised", length) == 0) |
| 669 |
|
&& (length >= 2)) { |
| 670 |
|
*reliefPtr = TK_RELIEF_RAISED; |
| 671 |
|
} else if ((c == 'r') && (strncmp(name, "ridge", length) == 0)) { |
| 672 |
|
*reliefPtr = TK_RELIEF_RIDGE; |
| 673 |
|
} else if ((c == 's') && (strncmp(name, "solid", length) == 0)) { |
| 674 |
|
*reliefPtr = TK_RELIEF_SOLID; |
| 675 |
|
} else if ((c == 's') && (strncmp(name, "sunken", length) == 0)) { |
| 676 |
|
*reliefPtr = TK_RELIEF_SUNKEN; |
| 677 |
|
} else { |
| 678 |
|
char buf[200]; |
| 679 |
|
|
| 680 |
|
sprintf(buf, "bad relief type \"%.50s\": must be %s", |
| 681 |
|
name, "flat, groove, raised, ridge, solid, or sunken"); |
| 682 |
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
| 683 |
|
return TCL_ERROR; |
| 684 |
|
} |
| 685 |
|
return TCL_OK; |
| 686 |
|
} |
| 687 |
|
|
| 688 |
|
/* |
| 689 |
|
*-------------------------------------------------------------- |
| 690 |
|
* |
| 691 |
|
* Tk_NameOfRelief -- |
| 692 |
|
* |
| 693 |
|
* Given a relief value, produce a string describing that |
| 694 |
|
* relief value. |
| 695 |
|
* |
| 696 |
|
* Results: |
| 697 |
|
* The return value is a static string that is equivalent |
| 698 |
|
* to relief. |
| 699 |
|
* |
| 700 |
|
* Side effects: |
| 701 |
|
* None. |
| 702 |
|
* |
| 703 |
|
*-------------------------------------------------------------- |
| 704 |
|
*/ |
| 705 |
|
|
| 706 |
|
char * |
| 707 |
|
Tk_NameOfRelief(relief) |
| 708 |
|
int relief; /* One of TK_RELIEF_FLAT, TK_RELIEF_RAISED, |
| 709 |
|
* or TK_RELIEF_SUNKEN. */ |
| 710 |
|
{ |
| 711 |
|
if (relief == TK_RELIEF_FLAT) { |
| 712 |
|
return "flat"; |
| 713 |
|
} else if (relief == TK_RELIEF_SUNKEN) { |
| 714 |
|
return "sunken"; |
| 715 |
|
} else if (relief == TK_RELIEF_RAISED) { |
| 716 |
|
return "raised"; |
| 717 |
|
} else if (relief == TK_RELIEF_GROOVE) { |
| 718 |
|
return "groove"; |
| 719 |
|
} else if (relief == TK_RELIEF_RIDGE) { |
| 720 |
|
return "ridge"; |
| 721 |
|
} else if (relief == TK_RELIEF_SOLID) { |
| 722 |
|
return "solid"; |
| 723 |
|
} else { |
| 724 |
|
return "unknown relief"; |
| 725 |
|
} |
| 726 |
|
} |
| 727 |
|
|
| 728 |
|
/* |
| 729 |
|
*-------------------------------------------------------------- |
| 730 |
|
* |
| 731 |
|
* Tk_Draw3DPolygon -- |
| 732 |
|
* |
| 733 |
|
* Draw a border with 3-D appearance around the edge of a |
| 734 |
|
* given polygon. |
| 735 |
|
* |
| 736 |
|
* Results: |
| 737 |
|
* None. |
| 738 |
|
* |
| 739 |
|
* Side effects: |
| 740 |
|
* Information is drawn in "drawable" in the form of a |
| 741 |
|
* 3-D border borderWidth units width wide on the left |
| 742 |
|
* of the trajectory given by pointPtr and numPoints (or |
| 743 |
|
* -borderWidth units wide on the right side, if borderWidth |
| 744 |
|
* is negative). |
| 745 |
|
* |
| 746 |
|
*-------------------------------------------------------------- |
| 747 |
|
*/ |
| 748 |
|
|
| 749 |
|
void |
| 750 |
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
| 751 |
|
borderWidth, leftRelief) |
| 752 |
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
| 753 |
|
Drawable drawable; /* X window or pixmap in which to draw. */ |
| 754 |
|
Tk_3DBorder border; /* Token for border to draw. */ |
| 755 |
|
XPoint *pointPtr; /* Array of points describing |
| 756 |
|
* polygon. All points must be |
| 757 |
|
* absolute (CoordModeOrigin). */ |
| 758 |
|
int numPoints; /* Number of points at *pointPtr. */ |
| 759 |
|
int borderWidth; /* Width of border, measured in |
| 760 |
|
* pixels to the left of the polygon's |
| 761 |
|
* trajectory. May be negative. */ |
| 762 |
|
int leftRelief; /* TK_RELIEF_RAISED or |
| 763 |
|
* TK_RELIEF_SUNKEN: indicates how |
| 764 |
|
* stuff to left of trajectory looks |
| 765 |
|
* relative to stuff on right. */ |
| 766 |
|
{ |
| 767 |
|
XPoint poly[4], b1, b2, newB1, newB2; |
| 768 |
|
XPoint perp, c, shift1, shift2; /* Used for handling parallel lines. */ |
| 769 |
|
register XPoint *p1Ptr, *p2Ptr; |
| 770 |
|
TkBorder *borderPtr = (TkBorder *) border; |
| 771 |
|
GC gc; |
| 772 |
|
int i, lightOnLeft, dx, dy, parallel, pointsSeen; |
| 773 |
|
Display *display = Tk_Display(tkwin); |
| 774 |
|
|
| 775 |
|
if (borderPtr->lightGC == None) { |
| 776 |
|
TkpGetShadows(borderPtr, tkwin); |
| 777 |
|
} |
| 778 |
|
|
| 779 |
|
/* |
| 780 |
|
* Handle grooves and ridges with recursive calls. |
| 781 |
|
*/ |
| 782 |
|
|
| 783 |
|
if ((leftRelief == TK_RELIEF_GROOVE) || (leftRelief == TK_RELIEF_RIDGE)) { |
| 784 |
|
int halfWidth; |
| 785 |
|
|
| 786 |
|
halfWidth = borderWidth/2; |
| 787 |
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
| 788 |
|
halfWidth, (leftRelief == TK_RELIEF_GROOVE) ? TK_RELIEF_RAISED |
| 789 |
|
: TK_RELIEF_SUNKEN); |
| 790 |
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
| 791 |
|
-halfWidth, (leftRelief == TK_RELIEF_GROOVE) ? TK_RELIEF_SUNKEN |
| 792 |
|
: TK_RELIEF_RAISED); |
| 793 |
|
return; |
| 794 |
|
} |
| 795 |
|
|
| 796 |
|
/* |
| 797 |
|
* If the polygon is already closed, drop the last point from it |
| 798 |
|
* (we'll close it automatically). |
| 799 |
|
*/ |
| 800 |
|
|
| 801 |
|
p1Ptr = &pointPtr[numPoints-1]; |
| 802 |
|
p2Ptr = &pointPtr[0]; |
| 803 |
|
if ((p1Ptr->x == p2Ptr->x) && (p1Ptr->y == p2Ptr->y)) { |
| 804 |
|
numPoints--; |
| 805 |
|
} |
| 806 |
|
|
| 807 |
|
/* |
| 808 |
|
* The loop below is executed once for each vertex in the polgon. |
| 809 |
|
* At the beginning of each iteration things look like this: |
| 810 |
|
* |
| 811 |
|
* poly[1] / |
| 812 |
|
* * / |
| 813 |
|
* | / |
| 814 |
|
* b1 * poly[0] (pointPtr[i-1]) |
| 815 |
|
* | | |
| 816 |
|
* | | |
| 817 |
|
* | | |
| 818 |
|
* | | |
| 819 |
|
* | | |
| 820 |
|
* | | *p1Ptr *p2Ptr |
| 821 |
|
* b2 *--------------------* |
| 822 |
|
* | |
| 823 |
|
* | |
| 824 |
|
* x------------------------- |
| 825 |
|
* |
| 826 |
|
* The job of this iteration is to do the following: |
| 827 |
|
* (a) Compute x (the border corner corresponding to |
| 828 |
|
* pointPtr[i]) and put it in poly[2]. As part of |
| 829 |
|
* this, compute a new b1 and b2 value for the next |
| 830 |
|
* side of the polygon. |
| 831 |
|
* (b) Put pointPtr[i] into poly[3]. |
| 832 |
|
* (c) Draw the polygon given by poly[0..3]. |
| 833 |
|
* (d) Advance poly[0], poly[1], b1, and b2 for the |
| 834 |
|
* next side of the polygon. |
| 835 |
|
*/ |
| 836 |
|
|
| 837 |
|
/* |
| 838 |
|
* The above situation doesn't first come into existence until |
| 839 |
|
* two points have been processed; the first two points are |
| 840 |
|
* used to "prime the pump", so some parts of the processing |
| 841 |
|
* are ommitted for these points. The variable "pointsSeen" |
| 842 |
|
* keeps track of the priming process; it has to be separate |
| 843 |
|
* from i in order to be able to ignore duplicate points in the |
| 844 |
|
* polygon. |
| 845 |
|
*/ |
| 846 |
|
|
| 847 |
|
pointsSeen = 0; |
| 848 |
|
for (i = -2, p1Ptr = &pointPtr[numPoints-2], p2Ptr = p1Ptr+1; |
| 849 |
|
i < numPoints; i++, p1Ptr = p2Ptr, p2Ptr++) { |
| 850 |
|
if ((i == -1) || (i == numPoints-1)) { |
| 851 |
|
p2Ptr = pointPtr; |
| 852 |
|
} |
| 853 |
|
if ((p2Ptr->x == p1Ptr->x) && (p2Ptr->y == p1Ptr->y)) { |
| 854 |
|
/* |
| 855 |
|
* Ignore duplicate points (they'd cause core dumps in |
| 856 |
|
* ShiftLine calls below). |
| 857 |
|
*/ |
| 858 |
|
continue; |
| 859 |
|
} |
| 860 |
|
ShiftLine(p1Ptr, p2Ptr, borderWidth, &newB1); |
| 861 |
|
newB2.x = newB1.x + (p2Ptr->x - p1Ptr->x); |
| 862 |
|
newB2.y = newB1.y + (p2Ptr->y - p1Ptr->y); |
| 863 |
|
poly[3] = *p1Ptr; |
| 864 |
|
parallel = 0; |
| 865 |
|
if (pointsSeen >= 1) { |
| 866 |
|
parallel = Intersect(&newB1, &newB2, &b1, &b2, &poly[2]); |
| 867 |
|
|
| 868 |
|
/* |
| 869 |
|
* If two consecutive segments of the polygon are parallel, |
| 870 |
|
* then things get more complex. Consider the following |
| 871 |
|
* diagram: |
| 872 |
|
* |
| 873 |
|
* poly[1] |
| 874 |
|
* *----b1-----------b2------a |
| 875 |
|
* \ |
| 876 |
|
* \ |
| 877 |
|
* *---------*----------* b |
| 878 |
|
* poly[0] *p2Ptr *p1Ptr / |
| 879 |
|
* / |
| 880 |
|
* --*--------*----c |
| 881 |
|
* newB1 newB2 |
| 882 |
|
* |
| 883 |
|
* Instead of using x and *p1Ptr for poly[2] and poly[3], as |
| 884 |
|
* in the original diagram, use a and b as above. Then instead |
| 885 |
|
* of using x and *p1Ptr for the new poly[0] and poly[1], use |
| 886 |
|
* b and c as above. |
| 887 |
|
* |
| 888 |
|
* Do the computation in three stages: |
| 889 |
|
* 1. Compute a point "perp" such that the line p1Ptr-perp |
| 890 |
|
* is perpendicular to p1Ptr-p2Ptr. |
| 891 |
|
* 2. Compute the points a and c by intersecting the lines |
| 892 |
|
* b1-b2 and newB1-newB2 with p1Ptr-perp. |
| 893 |
|
* 3. Compute b by shifting p1Ptr-perp to the right and |
| 894 |
|
* intersecting it with p1Ptr-p2Ptr. |
| 895 |
|
*/ |
| 896 |
|
|
| 897 |
|
if (parallel) { |
| 898 |
|
perp.x = p1Ptr->x + (p2Ptr->y - p1Ptr->y); |
| 899 |
|
perp.y = p1Ptr->y - (p2Ptr->x - p1Ptr->x); |
| 900 |
|
(void) Intersect(p1Ptr, &perp, &b1, &b2, &poly[2]); |
| 901 |
|
(void) Intersect(p1Ptr, &perp, &newB1, &newB2, &c); |
| 902 |
|
ShiftLine(p1Ptr, &perp, borderWidth, &shift1); |
| 903 |
|
shift2.x = shift1.x + (perp.x - p1Ptr->x); |
| 904 |
|
shift2.y = shift1.y + (perp.y - p1Ptr->y); |
| 905 |
|
(void) Intersect(p1Ptr, p2Ptr, &shift1, &shift2, &poly[3]); |
| 906 |
|
} |
| 907 |
|
} |
| 908 |
|
if (pointsSeen >= 2) { |
| 909 |
|
dx = poly[3].x - poly[0].x; |
| 910 |
|
dy = poly[3].y - poly[0].y; |
| 911 |
|
if (dx > 0) { |
| 912 |
|
lightOnLeft = (dy <= dx); |
| 913 |
|
} else { |
| 914 |
|
lightOnLeft = (dy < dx); |
| 915 |
|
} |
| 916 |
|
if (lightOnLeft ^ (leftRelief == TK_RELIEF_RAISED)) { |
| 917 |
|
gc = borderPtr->lightGC; |
| 918 |
|
} else { |
| 919 |
|
gc = borderPtr->darkGC; |
| 920 |
|
} |
| 921 |
|
XFillPolygon(display, drawable, gc, poly, 4, Convex, |
| 922 |
|
CoordModeOrigin); |
| 923 |
|
} |
| 924 |
|
b1.x = newB1.x; |
| 925 |
|
b1.y = newB1.y; |
| 926 |
|
b2.x = newB2.x; |
| 927 |
|
b2.y = newB2.y; |
| 928 |
|
poly[0].x = poly[3].x; |
| 929 |
|
poly[0].y = poly[3].y; |
| 930 |
|
if (parallel) { |
| 931 |
|
poly[1].x = c.x; |
| 932 |
|
poly[1].y = c.y; |
| 933 |
|
} else if (pointsSeen >= 1) { |
| 934 |
|
poly[1].x = poly[2].x; |
| 935 |
|
poly[1].y = poly[2].y; |
| 936 |
|
} |
| 937 |
|
pointsSeen++; |
| 938 |
|
} |
| 939 |
|
} |
| 940 |
|
|
| 941 |
|
/* |
| 942 |
|
*---------------------------------------------------------------------- |
| 943 |
|
* |
| 944 |
|
* Tk_Fill3DRectangle -- |
| 945 |
|
* |
| 946 |
|
* Fill a rectangular area, supplying a 3D border if desired. |
| 947 |
|
* |
| 948 |
|
* Results: |
| 949 |
|
* None. |
| 950 |
|
* |
| 951 |
|
* Side effects: |
| 952 |
|
* Information gets drawn on the screen. |
| 953 |
|
* |
| 954 |
|
*---------------------------------------------------------------------- |
| 955 |
|
*/ |
| 956 |
|
|
| 957 |
|
void |
| 958 |
|
Tk_Fill3DRectangle(tkwin, drawable, border, x, y, width, |
| 959 |
|
height, borderWidth, relief) |
| 960 |
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
| 961 |
|
Drawable drawable; /* X window or pixmap in which to draw. */ |
| 962 |
|
Tk_3DBorder border; /* Token for border to draw. */ |
| 963 |
|
int x, y, width, height; /* Outside area of rectangular region. */ |
| 964 |
|
int borderWidth; /* Desired width for border, in |
| 965 |
|
* pixels. Border will be *inside* region. */ |
| 966 |
|
int relief; /* Indicates 3D effect: TK_RELIEF_FLAT, |
| 967 |
|
* TK_RELIEF_RAISED, or TK_RELIEF_SUNKEN. */ |
| 968 |
|
{ |
| 969 |
|
register TkBorder *borderPtr = (TkBorder *) border; |
| 970 |
|
int doubleBorder; |
| 971 |
|
|
| 972 |
|
/* |
| 973 |
|
* This code is slightly tricky because it only draws the background |
| 974 |
|
* in areas not covered by the 3D border. This avoids flashing |
| 975 |
|
* effects on the screen for the border region. |
| 976 |
|
*/ |
| 977 |
|
|
| 978 |
|
if (relief == TK_RELIEF_FLAT) { |
| 979 |
|
borderWidth = 0; |
| 980 |
|
} else { |
| 981 |
|
/* |
| 982 |
|
* We need to make this extra check, otherwise we will leave |
| 983 |
|
* garbage in thin frames [Bug: 3596] |
| 984 |
|
*/ |
| 985 |
|
if (width < 2*borderWidth) { |
| 986 |
|
borderWidth = width/2; |
| 987 |
|
} |
| 988 |
|
if (height < 2*borderWidth) { |
| 989 |
|
borderWidth = height/2; |
| 990 |
|
} |
| 991 |
|
} |
| 992 |
|
doubleBorder = 2*borderWidth; |
| 993 |
|
|
| 994 |
|
if ((width > doubleBorder) && (height > doubleBorder)) { |
| 995 |
|
XFillRectangle(Tk_Display(tkwin), drawable, borderPtr->bgGC, |
| 996 |
|
x + borderWidth, y + borderWidth, |
| 997 |
|
(unsigned int) (width - doubleBorder), |
| 998 |
|
(unsigned int) (height - doubleBorder)); |
| 999 |
|
} |
| 1000 |
|
if (borderWidth) { |
| 1001 |
|
Tk_Draw3DRectangle(tkwin, drawable, border, x, y, width, |
| 1002 |
|
height, borderWidth, relief); |
| 1003 |
|
} |
| 1004 |
|
} |
| 1005 |
|
|
| 1006 |
|
/* |
| 1007 |
|
*---------------------------------------------------------------------- |
| 1008 |
|
* |
| 1009 |
|
* Tk_Fill3DPolygon -- |
| 1010 |
|
* |
| 1011 |
|
* Fill a polygonal area, supplying a 3D border if desired. |
| 1012 |
|
* |
| 1013 |
|
* Results: |
| 1014 |
|
* None. |
| 1015 |
|
* |
| 1016 |
|
* Side effects: |
| 1017 |
|
* Information gets drawn on the screen. |
| 1018 |
|
* |
| 1019 |
|
*---------------------------------------------------------------------- |
| 1020 |
|
*/ |
| 1021 |
|
|
| 1022 |
|
void |
| 1023 |
|
Tk_Fill3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
| 1024 |
|
borderWidth, leftRelief) |
| 1025 |
|
Tk_Window tkwin; /* Window for which border was allocated. */ |
| 1026 |
|
Drawable drawable; /* X window or pixmap in which to draw. */ |
| 1027 |
|
Tk_3DBorder border; /* Token for border to draw. */ |
| 1028 |
|
XPoint *pointPtr; /* Array of points describing |
| 1029 |
|
* polygon. All points must be |
| 1030 |
|
* absolute (CoordModeOrigin). */ |
| 1031 |
|
int numPoints; /* Number of points at *pointPtr. */ |
| 1032 |
|
int borderWidth; /* Width of border, measured in |
| 1033 |
|
* pixels to the left of the polygon's |
| 1034 |
|
* trajectory. May be negative. */ |
| 1035 |
|
int leftRelief; /* Indicates 3D effect of left side of |
| 1036 |
|
* trajectory relative to right: |
| 1037 |
|
* TK_RELIEF_FLAT, TK_RELIEF_RAISED, |
| 1038 |
|
* or TK_RELIEF_SUNKEN. */ |
| 1039 |
|
{ |
| 1040 |
|
register TkBorder *borderPtr = (TkBorder *) border; |
| 1041 |
|
|
| 1042 |
|
XFillPolygon(Tk_Display(tkwin), drawable, borderPtr->bgGC, |
| 1043 |
|
pointPtr, numPoints, Complex, CoordModeOrigin); |
| 1044 |
|
if (leftRelief != TK_RELIEF_FLAT) { |
| 1045 |
|
Tk_Draw3DPolygon(tkwin, drawable, border, pointPtr, numPoints, |
| 1046 |
|
borderWidth, leftRelief); |
| 1047 |
|
} |
| 1048 |
|
} |
| 1049 |
|
|
| 1050 |
|
/* |
| 1051 |
|
*-------------------------------------------------------------- |
| 1052 |
|
* |
| 1053 |
|
* BorderInit -- |
| 1054 |
|
* |
| 1055 |
|
* Initialize the structures used for border management. |
| 1056 |
|
* |
| 1057 |
|
* Results: |
| 1058 |
|
* None. |
| 1059 |
|
* |
| 1060 |
|
* Side effects: |
| 1061 |
|
* Read the code. |
| 1062 |
|
* |
| 1063 |
|
*------------------------------------------------------------- |
| 1064 |
|
*/ |
| 1065 |
|
|
| 1066 |
|
static void |
| 1067 |
|
BorderInit(dispPtr) |
| 1068 |
|
TkDisplay * dispPtr; /* Used to access thread-specific data. */ |
| 1069 |
|
{ |
| 1070 |
|
dispPtr->borderInit = 1; |
| 1071 |
|
Tcl_InitHashTable(&dispPtr->borderTable, TCL_STRING_KEYS); |
| 1072 |
|
} |
| 1073 |
|
|
| 1074 |
|
/* |
| 1075 |
|
*-------------------------------------------------------------- |
| 1076 |
|
* |
| 1077 |
|
* ShiftLine -- |
| 1078 |
|
* |
| 1079 |
|
* Given two points on a line, compute a point on a |
| 1080 |
|
* new line that is parallel to the given line and |
| 1081 |
|
* a given distance away from it. |
| 1082 |
|
* |
| 1083 |
|
* Results: |
| 1084 |
|
* None. |
| 1085 |
|
* |
| 1086 |
|
* Side effects: |
| 1087 |
|
* None. |
| 1088 |
|
* |
| 1089 |
|
*-------------------------------------------------------------- |
| 1090 |
|
*/ |
| 1091 |
|
|
| 1092 |
|
static void |
| 1093 |
|
ShiftLine(p1Ptr, p2Ptr, distance, p3Ptr) |
| 1094 |
|
XPoint *p1Ptr; /* First point on line. */ |
| 1095 |
|
XPoint *p2Ptr; /* Second point on line. */ |
| 1096 |
|
int distance; /* New line is to be this many |
| 1097 |
|
* units to the left of original |
| 1098 |
|
* line, when looking from p1 to |
| 1099 |
|
* p2. May be negative. */ |
| 1100 |
|
XPoint *p3Ptr; /* Store coords of point on new |
| 1101 |
|
* line here. */ |
| 1102 |
|
{ |
| 1103 |
|
int dx, dy, dxNeg, dyNeg; |
| 1104 |
|
|
| 1105 |
|
/* |
| 1106 |
|
* The table below is used for a quick approximation in |
| 1107 |
|
* computing the new point. An index into the table |
| 1108 |
|
* is 128 times the slope of the original line (the slope |
| 1109 |
|
* must always be between 0 and 1). The value of the table |
| 1110 |
|
* entry is 128 times the amount to displace the new line |
| 1111 |
|
* in y for each unit of perpendicular distance. In other |
| 1112 |
|
* words, the table maps from the tangent of an angle to |
| 1113 |
|
* the inverse of its cosine. If the slope of the original |
| 1114 |
|
* line is greater than 1, then the displacement is done in |
| 1115 |
|
* x rather than in y. |
| 1116 |
|
*/ |
| 1117 |
|
|
| 1118 |
|
static int shiftTable[129]; |
| 1119 |
|
|
| 1120 |
|
/* |
| 1121 |
|
* Initialize the table if this is the first time it is |
| 1122 |
|
* used. |
| 1123 |
|
*/ |
| 1124 |
|
|
| 1125 |
|
if (shiftTable[0] == 0) { |
| 1126 |
|
int i; |
| 1127 |
|
double tangent, cosine; |
| 1128 |
|
|
| 1129 |
|
for (i = 0; i <= 128; i++) { |
| 1130 |
|
tangent = i/128.0; |
| 1131 |
|
cosine = 128/cos(atan(tangent)) + .5; |
| 1132 |
|
shiftTable[i] = (int) cosine; |
| 1133 |
|
} |
| 1134 |
|
} |
| 1135 |
|
|
| 1136 |
|
*p3Ptr = *p1Ptr; |
| 1137 |
|
dx = p2Ptr->x - p1Ptr->x; |
| 1138 |
|
dy = p2Ptr->y - p1Ptr->y; |
| 1139 |
|
if (dy < 0) { |
| 1140 |
|
dyNeg = 1; |
| 1141 |
|
dy = -dy; |
| 1142 |
|
} else { |
| 1143 |
|
dyNeg = 0; |
| 1144 |
|
} |
| 1145 |
|
if (dx < 0) { |
| 1146 |
|
dxNeg = 1; |
| 1147 |
|
dx = -dx; |
| 1148 |
|
} else { |
| 1149 |
|
dxNeg = 0; |
| 1150 |
|
} |
| 1151 |
|
if (dy <= dx) { |
| 1152 |
|
dy = ((distance * shiftTable[(dy<<7)/dx]) + 64) >> 7; |
| 1153 |
|
if (!dxNeg) { |
| 1154 |
|
dy = -dy; |
| 1155 |
|
} |
| 1156 |
|
p3Ptr->y += dy; |
| 1157 |
|
} else { |
| 1158 |
|
dx = ((distance * shiftTable[(dx<<7)/dy]) + 64) >> 7; |
| 1159 |
|
if (dyNeg) { |
| 1160 |
|
dx = -dx; |
| 1161 |
|
} |
| 1162 |
|
p3Ptr->x += dx; |
| 1163 |
|
} |
| 1164 |
|
} |
| 1165 |
|
|
| 1166 |
|
/* |
| 1167 |
|
*-------------------------------------------------------------- |
| 1168 |
|
* |
| 1169 |
|
* Intersect -- |
| 1170 |
|
* |
| 1171 |
|
* Find the intersection point between two lines. |
| 1172 |
|
* |
| 1173 |
|
* Results: |
| 1174 |
|
* Under normal conditions 0 is returned and the point |
| 1175 |
|
* at *iPtr is filled in with the intersection between |
| 1176 |
|
* the two lines. If the two lines are parallel, then |
| 1177 |
|
* -1 is returned and *iPtr isn't modified. |
| 1178 |
|
* |
| 1179 |
|
* Side effects: |
| 1180 |
|
* None. |
| 1181 |
|
* |
| 1182 |
|
*-------------------------------------------------------------- |
| 1183 |
|
*/ |
| 1184 |
|
|
| 1185 |
|
static int |
| 1186 |
|
Intersect(a1Ptr, a2Ptr, b1Ptr, b2Ptr, iPtr) |
| 1187 |
|
XPoint *a1Ptr; /* First point of first line. */ |
| 1188 |
|
XPoint *a2Ptr; /* Second point of first line. */ |
| 1189 |
|
XPoint *b1Ptr; /* First point of second line. */ |
| 1190 |
|
XPoint *b2Ptr; /* Second point of second line. */ |
| 1191 |
|
XPoint *iPtr; /* Filled in with intersection point. */ |
| 1192 |
|
{ |
| 1193 |
|
int dxadyb, dxbdya, dxadxb, dyadyb, p, q; |
| 1194 |
|
|
| 1195 |
|
/* |
| 1196 |
|
* The code below is just a straightforward manipulation of two |
| 1197 |
|
* equations of the form y = (x-x1)*(y2-y1)/(x2-x1) + y1 to solve |
| 1198 |
|
* for the x-coordinate of intersection, then the y-coordinate. |
| 1199 |
|
*/ |
| 1200 |
|
|
| 1201 |
|
dxadyb = (a2Ptr->x - a1Ptr->x)*(b2Ptr->y - b1Ptr->y); |
| 1202 |
|
dxbdya = (b2Ptr->x - b1Ptr->x)*(a2Ptr->y - a1Ptr->y); |
| 1203 |
|
dxadxb = (a2Ptr->x - a1Ptr->x)*(b2Ptr->x - b1Ptr->x); |
| 1204 |
|
dyadyb = (a2Ptr->y - a1Ptr->y)*(b2Ptr->y - b1Ptr->y); |
| 1205 |
|
|
| 1206 |
|
if (dxadyb == dxbdya) { |
| 1207 |
|
return -1; |
| 1208 |
|
} |
| 1209 |
|
p = (a1Ptr->x*dxbdya - b1Ptr->x*dxadyb + (b1Ptr->y - a1Ptr->y)*dxadxb); |
| 1210 |
|
q = dxbdya - dxadyb; |
| 1211 |
|
if (q < 0) { |
| 1212 |
|
p = -p; |
| 1213 |
|
q = -q; |
| 1214 |
|
} |
| 1215 |
|
if (p < 0) { |
| 1216 |
|
iPtr->x = - ((-p + q/2)/q); |
| 1217 |
|
} else { |
| 1218 |
|
iPtr->x = (p + q/2)/q; |
| 1219 |
|
} |
| 1220 |
|
p = (a1Ptr->y*dxadyb - b1Ptr->y*dxbdya + (b1Ptr->x - a1Ptr->x)*dyadyb); |
| 1221 |
|
q = dxadyb - dxbdya; |
| 1222 |
|
if (q < 0) { |
| 1223 |
|
p = -p; |
| 1224 |
|
q = -q; |
| 1225 |
|
} |
| 1226 |
|
if (p < 0) { |
| 1227 |
|
iPtr->y = - ((-p + q/2)/q); |
| 1228 |
|
} else { |
| 1229 |
|
iPtr->y = (p + q/2)/q; |
| 1230 |
|
} |
| 1231 |
|
return 0; |
| 1232 |
|
} |
| 1233 |
|
|
| 1234 |
|
/* |
| 1235 |
|
*---------------------------------------------------------------------- |
| 1236 |
|
* |
| 1237 |
|
* Tk_Get3DBorderFromObj -- |
| 1238 |
|
* |
| 1239 |
|
* Returns the border referred to by a Tcl object. The border must |
| 1240 |
|
* already have been allocated via a call to Tk_Alloc3DBorderFromObj |
| 1241 |
|
* or Tk_Get3DBorder. |
| 1242 |
|
* |
| 1243 |
|
* Results: |
| 1244 |
|
* Returns the Tk_3DBorder that matches the tkwin and the string rep |
| 1245 |
|
* of the name of the border given in objPtr. |
| 1246 |
|
* |
| 1247 |
|
* Side effects: |
| 1248 |
|
* If the object is not already a border, the conversion will free |
| 1249 |
|
* any old internal representation. |
| 1250 |
|
* |
| 1251 |
|
*---------------------------------------------------------------------- |
| 1252 |
|
*/ |
| 1253 |
|
|
| 1254 |
|
Tk_3DBorder |
| 1255 |
|
Tk_Get3DBorderFromObj(tkwin, objPtr) |
| 1256 |
|
Tk_Window tkwin; |
| 1257 |
|
Tcl_Obj *objPtr; /* The object whose string value selects |
| 1258 |
|
* a border. */ |
| 1259 |
|
{ |
| 1260 |
|
TkBorder *borderPtr = NULL; |
| 1261 |
|
Tcl_HashEntry *hashPtr; |
| 1262 |
|
TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr; |
| 1263 |
|
|
| 1264 |
|
if (objPtr->typePtr != &borderObjType) { |
| 1265 |
|
InitBorderObj(objPtr); |
| 1266 |
|
} |
| 1267 |
|
|
| 1268 |
|
borderPtr = (TkBorder *) objPtr->internalRep.twoPtrValue.ptr1; |
| 1269 |
|
if (borderPtr != NULL) { |
| 1270 |
|
if ((borderPtr->resourceRefCount > 0) |
| 1271 |
|
&& (Tk_Screen(tkwin) == borderPtr->screen) |
| 1272 |
|
&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
| 1273 |
|
/* |
| 1274 |
|
* The object already points to the right border structure. |
| 1275 |
|
* Just return it. |
| 1276 |
|
*/ |
| 1277 |
|
|
| 1278 |
|
return (Tk_3DBorder) borderPtr; |
| 1279 |
|
} |
| 1280 |
|
hashPtr = borderPtr->hashPtr; |
| 1281 |
|
FreeBorderObjProc(objPtr); |
| 1282 |
|
} else { |
| 1283 |
|
hashPtr = Tcl_FindHashEntry(&dispPtr->borderTable, |
| 1284 |
|
Tcl_GetString(objPtr)); |
| 1285 |
|
if (hashPtr == NULL) { |
| 1286 |
|
goto error; |
| 1287 |
|
} |
| 1288 |
|
} |
| 1289 |
|
|
| 1290 |
|
/* |
| 1291 |
|
* At this point we've got a hash table entry, off of which hang |
| 1292 |
|
* one or more TkBorder structures. See if any of them will work. |
| 1293 |
|
*/ |
| 1294 |
|
|
| 1295 |
|
for (borderPtr = (TkBorder *) Tcl_GetHashValue(hashPtr); |
| 1296 |
|
(borderPtr != NULL); borderPtr = borderPtr->nextPtr) { |
| 1297 |
|
if ((Tk_Screen(tkwin) == borderPtr->screen) |
| 1298 |
|
&& (Tk_Colormap(tkwin) == borderPtr->colormap)) { |
| 1299 |
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) borderPtr; |
| 1300 |
|
borderPtr->objRefCount++; |
| 1301 |
|
return (Tk_3DBorder) borderPtr; |
| 1302 |
|
} |
| 1303 |
|
} |
| 1304 |
|
|
| 1305 |
|
error: |
| 1306 |
|
panic("Tk_Get3DBorderFromObj called with non-existent border!"); |
| 1307 |
|
/* |
| 1308 |
|
* The following code isn't reached; it's just there to please compilers. |
| 1309 |
|
*/ |
| 1310 |
|
return NULL; |
| 1311 |
|
} |
| 1312 |
|
|
| 1313 |
|
/* |
| 1314 |
|
*---------------------------------------------------------------------- |
| 1315 |
|
* |
| 1316 |
|
* InitBorderObj -- |
| 1317 |
|
* |
| 1318 |
|
* Attempt to generate a border internal form for the Tcl object |
| 1319 |
|
* "objPtr". |
| 1320 |
|
* |
| 1321 |
|
* Results: |
| 1322 |
|
* The return value is a standard Tcl result. If an error occurs during |
| 1323 |
|
* conversion, an error message is left in the interpreter's result |
| 1324 |
|
* unless "interp" is NULL. |
| 1325 |
|
* |
| 1326 |
|
* Side effects: |
| 1327 |
|
* If no error occurs, a blank internal format for a border value |
| 1328 |
|
* is intialized. The final form cannot be done without a Tk_Window. |
| 1329 |
|
* |
| 1330 |
|
*---------------------------------------------------------------------- |
| 1331 |
|
*/ |
| 1332 |
|
|
| 1333 |
|
static void |
| 1334 |
|
InitBorderObj(objPtr) |
| 1335 |
|
Tcl_Obj *objPtr; /* The object to convert. */ |
| 1336 |
|
{ |
| 1337 |
|
Tcl_ObjType *typePtr; |
| 1338 |
|
|
| 1339 |
|
/* |
| 1340 |
|
* Free the old internalRep before setting the new one. |
| 1341 |
|
*/ |
| 1342 |
|
|
| 1343 |
|
Tcl_GetString(objPtr); |
| 1344 |
|
typePtr = objPtr->typePtr; |
| 1345 |
|
if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) { |
| 1346 |
|
(*typePtr->freeIntRepProc)(objPtr); |
| 1347 |
|
} |
| 1348 |
|
objPtr->typePtr = &borderObjType; |
| 1349 |
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) NULL; |
| 1350 |
|
} |
| 1351 |
|
|
| 1352 |
|
/* |
| 1353 |
|
*---------------------------------------------------------------------- |
| 1354 |
|
* |
| 1355 |
|
* TkDebugBorder -- |
| 1356 |
|
* |
| 1357 |
|
* This procedure returns debugging information about a border. |
| 1358 |
|
* |
| 1359 |
|
* Results: |
| 1360 |
|
* The return value is a list with one sublist for each TkBorder |
| 1361 |
|
* corresponding to "name". Each sublist has two elements that |
| 1362 |
|
* contain the resourceRefCount and objRefCount fields from the |
| 1363 |
|
* TkBorder structure. |
| 1364 |
|
* |
| 1365 |
|
* Side effects: |
| 1366 |
|
* None. |
| 1367 |
|
* |
| 1368 |
|
*---------------------------------------------------------------------- |
| 1369 |
|
*/ |
| 1370 |
|
|
| 1371 |
|
Tcl_Obj * |
| 1372 |
|
TkDebugBorder(tkwin, name) |
| 1373 |
|
Tk_Window tkwin; /* The window in which the border will be |
| 1374 |
|
* used (not currently used). */ |
| 1375 |
|
char *name; /* Name of the desired color. */ |
| 1376 |
|
{ |
| 1377 |
|
TkBorder *borderPtr; |
| 1378 |
|
Tcl_HashEntry *hashPtr; |
| 1379 |
|
Tcl_Obj *resultPtr, *objPtr; |
| 1380 |
|
TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr; |
| 1381 |
|
|
| 1382 |
|
resultPtr = Tcl_NewObj(); |
| 1383 |
|
hashPtr = Tcl_FindHashEntry(&dispPtr->borderTable, name); |
| 1384 |
|
if (hashPtr != NULL) { |
| 1385 |
|
borderPtr = (TkBorder *) Tcl_GetHashValue(hashPtr); |
| 1386 |
|
if (borderPtr == NULL) { |
| 1387 |
|
panic("TkDebugBorder found empty hash table entry"); |
| 1388 |
|
} |
| 1389 |
|
for ( ; (borderPtr != NULL); borderPtr = borderPtr->nextPtr) { |
| 1390 |
|
objPtr = Tcl_NewObj(); |
| 1391 |
|
Tcl_ListObjAppendElement(NULL, objPtr, |
| 1392 |
|
Tcl_NewIntObj(borderPtr->resourceRefCount)); |
| 1393 |
|
Tcl_ListObjAppendElement(NULL, objPtr, |
| 1394 |
|
Tcl_NewIntObj(borderPtr->objRefCount)); |
| 1395 |
|
Tcl_ListObjAppendElement(NULL, resultPtr, objPtr); |
| 1396 |
|
} |
| 1397 |
|
} |
| 1398 |
|
return resultPtr; |
| 1399 |
|
} |
| 1400 |
|
|
| 1401 |
|
/* End of tk3d.c */ |
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