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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tkcanvutil.c,v 1.1.1.1 2001/06/13 04:57:52 dtashley Exp $ */
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2 |
|
3 |
/*
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4 |
* tkCanvUtil.c --
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*
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* This procedure contains a collection of utility procedures
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* used by the implementations of various canvas item types.
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*
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* Copyright (c) 1994 Sun Microsystems, Inc.
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* Copyright (c) 1994 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: tkcanvutil.c,v 1.1.1.1 2001/06/13 04:57:52 dtashley Exp $
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*/
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#include "tkInt.h"
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#include "tkCanvas.h"
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#include "tkPort.h"
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/*
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*----------------------------------------------------------------------
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*
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* Tk_CanvasTkwin --
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*
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* Given a token for a canvas, this procedure returns the
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* widget that represents the canvas.
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*
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* Results:
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* The return value is a handle for the widget.
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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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Tk_Window
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Tk_CanvasTkwin(canvas)
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Tk_Canvas canvas; /* Token for the canvas. */
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{
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TkCanvas *canvasPtr = (TkCanvas *) canvas;
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return canvasPtr->tkwin;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tk_CanvasDrawableCoords --
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*
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* Given an (x,y) coordinate pair within a canvas, this procedure
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* returns the corresponding coordinates at which the point should
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* be drawn in the drawable used for display.
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*
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* Results:
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* There is no return value. The values at *drawableXPtr and
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* *drawableYPtr are filled in with the coordinates at which
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* x and y should be drawn. These coordinates are clipped
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* to fit within a "short", since this is what X uses in
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* most cases for drawing.
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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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void
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Tk_CanvasDrawableCoords(canvas, x, y, drawableXPtr, drawableYPtr)
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Tk_Canvas canvas; /* Token for the canvas. */
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double x, y; /* Coordinates in canvas space. */
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short *drawableXPtr, *drawableYPtr; /* Screen coordinates are stored
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* here. */
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{
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TkCanvas *canvasPtr = (TkCanvas *) canvas;
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double tmp;
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tmp = x - canvasPtr->drawableXOrigin;
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if (tmp > 0) {
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tmp += 0.5;
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} else {
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tmp -= 0.5;
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}
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if (tmp > 32767) {
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*drawableXPtr = 32767;
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} else if (tmp < -32768) {
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*drawableXPtr = -32768;
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} else {
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*drawableXPtr = (short) tmp;
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}
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tmp = y - canvasPtr->drawableYOrigin;
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if (tmp > 0) {
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tmp += 0.5;
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} else {
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tmp -= 0.5;
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}
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if (tmp > 32767) {
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*drawableYPtr = 32767;
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} else if (tmp < -32768) {
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*drawableYPtr = -32768;
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} else {
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*drawableYPtr = (short) tmp;
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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_CanvasWindowCoords --
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*
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* Given an (x,y) coordinate pair within a canvas, this procedure
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* returns the corresponding coordinates in the canvas's window.
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*
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* Results:
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* There is no return value. The values at *screenXPtr and
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* *screenYPtr are filled in with the coordinates at which
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* (x,y) appears in the canvas's window. These coordinates
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* are clipped to fit within a "short", since this is what X
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* uses in most cases for drawing.
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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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void
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Tk_CanvasWindowCoords(canvas, x, y, screenXPtr, screenYPtr)
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Tk_Canvas canvas; /* Token for the canvas. */
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double x, y; /* Coordinates in canvas space. */
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short *screenXPtr, *screenYPtr; /* Screen coordinates are stored
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* here. */
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{
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TkCanvas *canvasPtr = (TkCanvas *) canvas;
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double tmp;
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tmp = x - canvasPtr->xOrigin;
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if (tmp > 0) {
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tmp += 0.5;
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} else {
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tmp -= 0.5;
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}
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if (tmp > 32767) {
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*screenXPtr = 32767;
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} else if (tmp < -32768) {
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*screenXPtr = -32768;
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} else {
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*screenXPtr = (short) tmp;
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}
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tmp = y - canvasPtr->yOrigin;
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if (tmp > 0) {
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tmp += 0.5;
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} else {
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tmp -= 0.5;
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}
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if (tmp > 32767) {
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*screenYPtr = 32767;
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} else if (tmp < -32768) {
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*screenYPtr = -32768;
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} else {
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*screenYPtr = (short) tmp;
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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_CanvasGetCoord --
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*
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* Given a string, returns a floating-point canvas coordinate
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* corresponding to that string.
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*
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* Results:
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* The return value is a standard Tcl return result. If
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* TCL_OK is returned, then everything went well and the
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* canvas coordinate is stored at *doublePtr; otherwise
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* TCL_ERROR is returned and an error message is left in
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* the interp's result.
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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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int
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Tk_CanvasGetCoord(interp, canvas, string, doublePtr)
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Tcl_Interp *interp; /* Interpreter for error reporting. */
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Tk_Canvas canvas; /* Canvas to which coordinate applies. */
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char *string; /* Describes coordinate (any screen
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* coordinate form may be used here). */
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double *doublePtr; /* Place to store converted coordinate. */
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{
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TkCanvas *canvasPtr = (TkCanvas *) canvas;
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if (Tk_GetScreenMM(canvasPtr->interp, canvasPtr->tkwin, string,
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doublePtr) != TCL_OK) {
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return TCL_ERROR;
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}
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*doublePtr *= canvasPtr->pixelsPerMM;
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return TCL_OK;
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}
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/*
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*--------------------------------------------------------------
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*
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* Tk_CanvasGetCoordFromObj --
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*
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* Given a string, returns a floating-point canvas coordinate
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* corresponding to that string.
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*
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* Results:
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* The return value is a standard Tcl return result. If
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* TCL_OK is returned, then everything went well and the
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* canvas coordinate is stored at *doublePtr; otherwise
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* TCL_ERROR is returned and an error message is left in
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* interp->result.
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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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int
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Tk_CanvasGetCoordFromObj(interp, canvas, obj, doublePtr)
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Tcl_Interp *interp; /* Interpreter for error reporting. */
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Tk_Canvas canvas; /* Canvas to which coordinate applies. */
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Tcl_Obj *obj; /* Describes coordinate (any screen
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* coordinate form may be used here). */
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double *doublePtr; /* Place to store converted coordinate. */
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{
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TkCanvas *canvasPtr = (TkCanvas *) canvas;
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if (Tk_GetMMFromObj(canvasPtr->interp, canvasPtr->tkwin, obj,
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doublePtr) != TCL_OK) {
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return TCL_ERROR;
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}
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*doublePtr *= canvasPtr->pixelsPerMM;
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return TCL_OK;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tk_CanvasSetStippleOrigin --
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*
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* This procedure sets the stipple origin in a graphics context
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* so that stipples drawn with the GC will line up with other
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* stipples previously drawn in the canvas.
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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 graphics context is modified.
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*
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*----------------------------------------------------------------------
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*/
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262 |
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void
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Tk_CanvasSetStippleOrigin(canvas, gc)
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Tk_Canvas canvas; /* Token for a canvas. */
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GC gc; /* Graphics context that is about to be
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* used to draw a stippled pattern as
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* part of redisplaying the canvas. */
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{
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271 |
TkCanvas *canvasPtr = (TkCanvas *) canvas;
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XSetTSOrigin(canvasPtr->display, gc, -canvasPtr->drawableXOrigin,
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-canvasPtr->drawableYOrigin);
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275 |
}
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277 |
/*
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278 |
*----------------------------------------------------------------------
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279 |
*
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280 |
* Tk_CanvasSetOffset--
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281 |
*
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282 |
* This procedure sets the stipple offset in a graphics
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283 |
* context so that stipples drawn with the GC will
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* line up with other stipples with the same offset.
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285 |
*
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286 |
* Results:
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287 |
* None.
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288 |
*
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289 |
* Side effects:
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290 |
* The graphics context is modified.
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*
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*----------------------------------------------------------------------
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*/
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void
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Tk_CanvasSetOffset(canvas, gc, offset)
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297 |
Tk_Canvas canvas; /* Token for a canvas. */
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GC gc; /* Graphics context that is about to be
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* used to draw a stippled pattern as
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* part of redisplaying the canvas. */
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301 |
Tk_TSOffset *offset; /* offset (may be NULL pointer)*/
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302 |
{
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303 |
TkCanvas *canvasPtr = (TkCanvas *) canvas;
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304 |
int flags = 0;
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305 |
int x = - canvasPtr->drawableXOrigin;
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306 |
int y = - canvasPtr->drawableYOrigin;
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307 |
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308 |
if (offset != NULL) {
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309 |
flags = offset->flags;
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310 |
x += offset->xoffset;
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311 |
y += offset->yoffset;
|
312 |
}
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313 |
if ((flags & TK_OFFSET_RELATIVE) && !(flags & TK_OFFSET_INDEX)) {
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314 |
Tk_SetTSOrigin(canvasPtr->tkwin, gc, x - canvasPtr->xOrigin,
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315 |
y - canvasPtr->yOrigin);
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316 |
} else {
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317 |
XSetTSOrigin(canvasPtr->display, gc, x, y);
|
318 |
}
|
319 |
}
|
320 |
|
321 |
/*
|
322 |
*----------------------------------------------------------------------
|
323 |
*
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324 |
* Tk_CanvasGetTextInfo --
|
325 |
*
|
326 |
* This procedure returns a pointer to a structure containing
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327 |
* information about the selection and insertion cursor for
|
328 |
* a canvas widget. Items such as text items save the pointer
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329 |
* and use it to share access to the information with the generic
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330 |
* canvas code.
|
331 |
*
|
332 |
* Results:
|
333 |
* The return value is a pointer to the structure holding text
|
334 |
* information for the canvas. Most of the fields should not
|
335 |
* be modified outside the generic canvas code; see the user
|
336 |
* documentation for details.
|
337 |
*
|
338 |
* Side effects:
|
339 |
* None.
|
340 |
*
|
341 |
*----------------------------------------------------------------------
|
342 |
*/
|
343 |
|
344 |
Tk_CanvasTextInfo *
|
345 |
Tk_CanvasGetTextInfo(canvas)
|
346 |
Tk_Canvas canvas; /* Token for the canvas widget. */
|
347 |
{
|
348 |
return &((TkCanvas *) canvas)->textInfo;
|
349 |
}
|
350 |
|
351 |
/*
|
352 |
*--------------------------------------------------------------
|
353 |
*
|
354 |
* Tk_CanvasTagsParseProc --
|
355 |
*
|
356 |
* This procedure is invoked during option processing to handle
|
357 |
* "-tags" options for canvas items.
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358 |
*
|
359 |
* Results:
|
360 |
* A standard Tcl return value.
|
361 |
*
|
362 |
* Side effects:
|
363 |
* The tags for a given item get replaced by those indicated
|
364 |
* in the value argument.
|
365 |
*
|
366 |
*--------------------------------------------------------------
|
367 |
*/
|
368 |
|
369 |
int
|
370 |
Tk_CanvasTagsParseProc(clientData, interp, tkwin, value, widgRec, offset)
|
371 |
ClientData clientData; /* Not used.*/
|
372 |
Tcl_Interp *interp; /* Used for reporting errors. */
|
373 |
Tk_Window tkwin; /* Window containing canvas widget. */
|
374 |
char *value; /* Value of option (list of tag
|
375 |
* names). */
|
376 |
char *widgRec; /* Pointer to record for item. */
|
377 |
int offset; /* Offset into item (ignored). */
|
378 |
{
|
379 |
register Tk_Item *itemPtr = (Tk_Item *) widgRec;
|
380 |
int argc, i;
|
381 |
char **argv;
|
382 |
Tk_Uid *newPtr;
|
383 |
|
384 |
/*
|
385 |
* Break the value up into the individual tag names.
|
386 |
*/
|
387 |
|
388 |
if (Tcl_SplitList(interp, value, &argc, &argv) != TCL_OK) {
|
389 |
return TCL_ERROR;
|
390 |
}
|
391 |
|
392 |
/*
|
393 |
* Make sure that there's enough space in the item to hold the
|
394 |
* tag names.
|
395 |
*/
|
396 |
|
397 |
if (itemPtr->tagSpace < argc) {
|
398 |
newPtr = (Tk_Uid *) ckalloc((unsigned) (argc * sizeof(Tk_Uid)));
|
399 |
for (i = itemPtr->numTags-1; i >= 0; i--) {
|
400 |
newPtr[i] = itemPtr->tagPtr[i];
|
401 |
}
|
402 |
if (itemPtr->tagPtr != itemPtr->staticTagSpace) {
|
403 |
ckfree((char *) itemPtr->tagPtr);
|
404 |
}
|
405 |
itemPtr->tagPtr = newPtr;
|
406 |
itemPtr->tagSpace = argc;
|
407 |
}
|
408 |
itemPtr->numTags = argc;
|
409 |
for (i = 0; i < argc; i++) {
|
410 |
itemPtr->tagPtr[i] = Tk_GetUid(argv[i]);
|
411 |
}
|
412 |
ckfree((char *) argv);
|
413 |
return TCL_OK;
|
414 |
}
|
415 |
|
416 |
/*
|
417 |
*--------------------------------------------------------------
|
418 |
*
|
419 |
* Tk_CanvasTagsPrintProc --
|
420 |
*
|
421 |
* This procedure is invoked by the Tk configuration code
|
422 |
* to produce a printable string for the "-tags" configuration
|
423 |
* option for canvas items.
|
424 |
*
|
425 |
* Results:
|
426 |
* The return value is a string describing all the tags for
|
427 |
* the item referred to by "widgRec". In addition, *freeProcPtr
|
428 |
* is filled in with the address of a procedure to call to free
|
429 |
* the result string when it's no longer needed (or NULL to
|
430 |
* indicate that the string doesn't need to be freed).
|
431 |
*
|
432 |
* Side effects:
|
433 |
* None.
|
434 |
*
|
435 |
*--------------------------------------------------------------
|
436 |
*/
|
437 |
|
438 |
char *
|
439 |
Tk_CanvasTagsPrintProc(clientData, tkwin, widgRec, offset, freeProcPtr)
|
440 |
ClientData clientData; /* Ignored. */
|
441 |
Tk_Window tkwin; /* Window containing canvas widget. */
|
442 |
char *widgRec; /* Pointer to record for item. */
|
443 |
int offset; /* Ignored. */
|
444 |
Tcl_FreeProc **freeProcPtr; /* Pointer to variable to fill in with
|
445 |
* information about how to reclaim
|
446 |
* storage for return string. */
|
447 |
{
|
448 |
register Tk_Item *itemPtr = (Tk_Item *) widgRec;
|
449 |
|
450 |
if (itemPtr->numTags == 0) {
|
451 |
*freeProcPtr = (Tcl_FreeProc *) NULL;
|
452 |
return "";
|
453 |
}
|
454 |
if (itemPtr->numTags == 1) {
|
455 |
*freeProcPtr = (Tcl_FreeProc *) NULL;
|
456 |
return (char *) itemPtr->tagPtr[0];
|
457 |
}
|
458 |
*freeProcPtr = TCL_DYNAMIC;
|
459 |
return Tcl_Merge(itemPtr->numTags, (char **) itemPtr->tagPtr);
|
460 |
}
|
461 |
|
462 |
|
463 |
static int DashConvert _ANSI_ARGS_((char *l, CONST char *p,
|
464 |
int n, double width));
|
465 |
#define ABS(a) ((a>=0)?(a):(-(a)))
|
466 |
|
467 |
/*
|
468 |
*--------------------------------------------------------------
|
469 |
*
|
470 |
* TkCanvasDashParseProc --
|
471 |
*
|
472 |
* This procedure is invoked during option processing to handle
|
473 |
* "-dash", "-activedash" and "-disableddash" options for canvas
|
474 |
* objects.
|
475 |
*
|
476 |
* Results:
|
477 |
* A standard Tcl return value.
|
478 |
*
|
479 |
* Side effects:
|
480 |
* The dash list for a given canvas object gets replaced by
|
481 |
* those indicated in the value argument.
|
482 |
*
|
483 |
*--------------------------------------------------------------
|
484 |
*/
|
485 |
|
486 |
int
|
487 |
TkCanvasDashParseProc(clientData, interp, tkwin, value, widgRec, offset)
|
488 |
ClientData clientData; /* Not used.*/
|
489 |
Tcl_Interp *interp; /* Used for reporting errors. */
|
490 |
Tk_Window tkwin; /* Window containing canvas widget. */
|
491 |
CONST char *value; /* Value of option. */
|
492 |
char *widgRec; /* Pointer to record for item. */
|
493 |
int offset; /* Offset into item. */
|
494 |
{
|
495 |
return Tk_GetDash(interp, value, (Tk_Dash *)(widgRec+offset));
|
496 |
}
|
497 |
|
498 |
/*
|
499 |
*--------------------------------------------------------------
|
500 |
*
|
501 |
* TkCanvasDashPrintProc --
|
502 |
*
|
503 |
* This procedure is invoked by the Tk configuration code
|
504 |
* to produce a printable string for the "-dash", "-activedash"
|
505 |
* and "-disableddash" configuration options for canvas items.
|
506 |
*
|
507 |
* Results:
|
508 |
* The return value is a string describing all the dash list for
|
509 |
* the item referred to by "widgRec"and "offset". In addition,
|
510 |
* *freeProcPtr is filled in with the address of a procedure to
|
511 |
* call to free the result string when it's no longer needed (or
|
512 |
* NULL to indicate that the string doesn't need to be freed).
|
513 |
*
|
514 |
* Side effects:
|
515 |
* None.
|
516 |
*
|
517 |
*--------------------------------------------------------------
|
518 |
*/
|
519 |
|
520 |
char *
|
521 |
TkCanvasDashPrintProc(clientData, tkwin, widgRec, offset, freeProcPtr)
|
522 |
ClientData clientData; /* Ignored. */
|
523 |
Tk_Window tkwin; /* Window containing canvas widget. */
|
524 |
char *widgRec; /* Pointer to record for item. */
|
525 |
int offset; /* Offset in record for item. */
|
526 |
Tcl_FreeProc **freeProcPtr; /* Pointer to variable to fill in with
|
527 |
* information about how to reclaim
|
528 |
* storage for return string. */
|
529 |
{
|
530 |
Tk_Dash *dash = (Tk_Dash *) (widgRec+offset);
|
531 |
char *buffer;
|
532 |
char *p;
|
533 |
int i = dash->number;
|
534 |
|
535 |
if (i < 0) {
|
536 |
i = -i;
|
537 |
*freeProcPtr = TCL_DYNAMIC;
|
538 |
buffer = (char *) ckalloc((unsigned int) (i+1));
|
539 |
p = (i > sizeof(char *)) ? dash->pattern.pt : dash->pattern.array;
|
540 |
memcpy(buffer, p, (unsigned int) i);
|
541 |
buffer[i] = 0;
|
542 |
return buffer;
|
543 |
} else if (!i) {
|
544 |
*freeProcPtr = (Tcl_FreeProc *) NULL;
|
545 |
return "";
|
546 |
}
|
547 |
buffer = (char *)ckalloc((unsigned int) (4*i));
|
548 |
*freeProcPtr = TCL_DYNAMIC;
|
549 |
|
550 |
p = (i > sizeof(char *)) ? dash->pattern.pt : dash->pattern.array;
|
551 |
sprintf(buffer, "%d", *p++ & 0xff);
|
552 |
while(--i) {
|
553 |
sprintf(buffer+strlen(buffer), " %d", *p++ & 0xff);
|
554 |
}
|
555 |
return buffer;
|
556 |
}
|
557 |
|
558 |
/*
|
559 |
*--------------------------------------------------------------
|
560 |
*
|
561 |
* Tk_CreateSmoothMethod --
|
562 |
*
|
563 |
* This procedure is invoked to add additional values
|
564 |
* for the "-smooth" option to the list.
|
565 |
*
|
566 |
* Results:
|
567 |
* A standard Tcl return value.
|
568 |
*
|
569 |
* Side effects:
|
570 |
* In the future "-smooth <name>" will be accepted as
|
571 |
* smooth method for the line and polygon.
|
572 |
*
|
573 |
*--------------------------------------------------------------
|
574 |
*/
|
575 |
|
576 |
Tk_SmoothMethod tkBezierSmoothMethod = {
|
577 |
"bezier",
|
578 |
TkMakeBezierCurve,
|
579 |
(void (*) _ANSI_ARGS_((Tcl_Interp *interp, Tk_Canvas canvas,
|
580 |
double *coordPtr, int numPoints, int numSteps)))
|
581 |
TkMakeBezierPostscript,
|
582 |
};
|
583 |
|
584 |
static void SmoothMethodCleanupProc _ANSI_ARGS_((ClientData clientData,
|
585 |
Tcl_Interp *interp));
|
586 |
|
587 |
typedef struct SmoothAssocData {
|
588 |
struct SmoothAssocData *nextPtr; /* pointer to next SmoothAssocData */
|
589 |
Tk_SmoothMethod smooth; /* name and functions associated with this
|
590 |
* option */
|
591 |
} SmoothAssocData;
|
592 |
|
593 |
void
|
594 |
Tk_CreateSmoothMethod(interp, smooth)
|
595 |
Tcl_Interp *interp;
|
596 |
Tk_SmoothMethod *smooth;
|
597 |
{
|
598 |
SmoothAssocData *methods, *typePtr2, *prevPtr, *ptr;
|
599 |
methods = (SmoothAssocData *) Tcl_GetAssocData(interp, "smoothMethod",
|
600 |
(Tcl_InterpDeleteProc **) NULL);
|
601 |
|
602 |
/*
|
603 |
* If there's already a smooth method with the given name, remove it.
|
604 |
*/
|
605 |
|
606 |
for (typePtr2 = methods, prevPtr = NULL; typePtr2 != NULL;
|
607 |
prevPtr = typePtr2, typePtr2 = typePtr2->nextPtr) {
|
608 |
if (!strcmp(typePtr2->smooth.name, smooth->name)) {
|
609 |
if (prevPtr == NULL) {
|
610 |
methods = typePtr2->nextPtr;
|
611 |
} else {
|
612 |
prevPtr->nextPtr = typePtr2->nextPtr;
|
613 |
}
|
614 |
ckfree((char *) typePtr2);
|
615 |
break;
|
616 |
}
|
617 |
}
|
618 |
ptr = (SmoothAssocData *) ckalloc(sizeof(SmoothAssocData));
|
619 |
ptr->smooth.name = smooth->name;
|
620 |
ptr->smooth.coordProc = smooth->coordProc;
|
621 |
ptr->smooth.postscriptProc = smooth->postscriptProc;
|
622 |
ptr->nextPtr = methods;
|
623 |
Tcl_SetAssocData(interp, "smoothMethod", SmoothMethodCleanupProc,
|
624 |
(ClientData) ptr);
|
625 |
}
|
626 |
/*
|
627 |
*----------------------------------------------------------------------
|
628 |
*
|
629 |
* SmoothMethodCleanupProc --
|
630 |
*
|
631 |
* This procedure is invoked whenever an interpreter is deleted
|
632 |
* to cleanup the smooth methods.
|
633 |
*
|
634 |
* Results:
|
635 |
* None.
|
636 |
*
|
637 |
* Side effects:
|
638 |
* Smooth methods are removed.
|
639 |
*
|
640 |
*----------------------------------------------------------------------
|
641 |
*/
|
642 |
|
643 |
static void
|
644 |
SmoothMethodCleanupProc(clientData, interp)
|
645 |
ClientData clientData; /* Points to "smoothMethod" AssocData
|
646 |
* for the interpreter. */
|
647 |
Tcl_Interp *interp; /* Interpreter that is being deleted. */
|
648 |
{
|
649 |
SmoothAssocData *ptr, *methods = (SmoothAssocData *) clientData;
|
650 |
|
651 |
while (methods != NULL) {
|
652 |
methods = (ptr = methods)->nextPtr;
|
653 |
ckfree((char *) ptr);
|
654 |
}
|
655 |
}
|
656 |
/*
|
657 |
*--------------------------------------------------------------
|
658 |
*
|
659 |
* TkSmoothParseProc --
|
660 |
*
|
661 |
* This procedure is invoked during option processing to handle
|
662 |
* the "-smooth" option.
|
663 |
*
|
664 |
* Results:
|
665 |
* A standard Tcl return value.
|
666 |
*
|
667 |
* Side effects:
|
668 |
* The smooth option for a given item gets replaced by the value
|
669 |
* indicated in the value argument.
|
670 |
*
|
671 |
*--------------------------------------------------------------
|
672 |
*/
|
673 |
|
674 |
int
|
675 |
TkSmoothParseProc(clientData, interp, tkwin, value, widgRec, offset)
|
676 |
ClientData clientData; /* some flags.*/
|
677 |
Tcl_Interp *interp; /* Used for reporting errors. */
|
678 |
Tk_Window tkwin; /* Window containing canvas widget. */
|
679 |
CONST char *value; /* Value of option. */
|
680 |
char *widgRec; /* Pointer to record for item. */
|
681 |
int offset; /* Offset into item. */
|
682 |
{
|
683 |
register Tk_SmoothMethod **smoothPtr =
|
684 |
(Tk_SmoothMethod **) (widgRec + offset);
|
685 |
Tk_SmoothMethod *smooth = NULL;
|
686 |
int b;
|
687 |
size_t length;
|
688 |
SmoothAssocData *methods;
|
689 |
|
690 |
if (value == NULL || *value == 0) {
|
691 |
*smoothPtr = (Tk_SmoothMethod *) NULL;
|
692 |
return TCL_OK;
|
693 |
}
|
694 |
length = strlen(value);
|
695 |
methods = (SmoothAssocData *) Tcl_GetAssocData(interp, "smoothMethod",
|
696 |
(Tcl_InterpDeleteProc **) NULL);
|
697 |
while (methods != (SmoothAssocData *) NULL) {
|
698 |
if (strncmp(value, methods->smooth.name, length) == 0) {
|
699 |
if (smooth != (Tk_SmoothMethod *) NULL) {
|
700 |
Tcl_AppendResult(interp, "ambigeous smooth method \"", value,
|
701 |
"\"", (char *) NULL);
|
702 |
return TCL_ERROR;
|
703 |
}
|
704 |
smooth = &methods->smooth;
|
705 |
}
|
706 |
methods = methods->nextPtr;
|
707 |
}
|
708 |
if (smooth) {
|
709 |
*smoothPtr = smooth;
|
710 |
return TCL_OK;
|
711 |
}
|
712 |
|
713 |
if (Tcl_GetBoolean(interp, (char *) value, &b) != TCL_OK) {
|
714 |
return TCL_ERROR;
|
715 |
}
|
716 |
*smoothPtr = b ? &tkBezierSmoothMethod : (Tk_SmoothMethod*) NULL;
|
717 |
return TCL_OK;
|
718 |
}
|
719 |
/*
|
720 |
*--------------------------------------------------------------
|
721 |
*
|
722 |
* TkSmoothPrintProc --
|
723 |
*
|
724 |
* This procedure is invoked by the Tk configuration code
|
725 |
* to produce a printable string for the "-smooth"
|
726 |
* configuration option.
|
727 |
*
|
728 |
* Results:
|
729 |
* The return value is a string describing the smooth option for
|
730 |
* the item referred to by "widgRec". In addition, *freeProcPtr
|
731 |
* is filled in with the address of a procedure to call to free
|
732 |
* the result string when it's no longer needed (or NULL to
|
733 |
* indicate that the string doesn't need to be freed).
|
734 |
*
|
735 |
* Side effects:
|
736 |
* None.
|
737 |
*
|
738 |
*--------------------------------------------------------------
|
739 |
*/
|
740 |
|
741 |
char *
|
742 |
TkSmoothPrintProc(clientData, tkwin, widgRec, offset, freeProcPtr)
|
743 |
ClientData clientData; /* Ignored. */
|
744 |
Tk_Window tkwin; /* Window containing canvas widget. */
|
745 |
char *widgRec; /* Pointer to record for item. */
|
746 |
int offset; /* Offset into item. */
|
747 |
Tcl_FreeProc **freeProcPtr; /* Pointer to variable to fill in with
|
748 |
* information about how to reclaim
|
749 |
* storage for return string. */
|
750 |
{
|
751 |
register Tk_SmoothMethod **smoothPtr = (Tk_SmoothMethod **) (widgRec + offset);
|
752 |
|
753 |
return (*smoothPtr) ? (*smoothPtr)->name : "0";
|
754 |
}
|
755 |
/*
|
756 |
*--------------------------------------------------------------
|
757 |
*
|
758 |
* Tk_GetDash
|
759 |
*
|
760 |
* This procedure is used to parse a string, assuming
|
761 |
* it is dash information.
|
762 |
*
|
763 |
* Results:
|
764 |
* The return value is a standard Tcl result: TCL_OK means
|
765 |
* that the dash information was parsed ok, and
|
766 |
* TCL_ERROR means it couldn't be parsed.
|
767 |
*
|
768 |
* Side effects:
|
769 |
* Dash information in the dash structure is updated.
|
770 |
*
|
771 |
*--------------------------------------------------------------
|
772 |
*/
|
773 |
|
774 |
int
|
775 |
Tk_GetDash(interp, value, dash)
|
776 |
Tcl_Interp *interp; /* Used for error reporting. */
|
777 |
CONST char *value; /* Textual specification of dash list. */
|
778 |
Tk_Dash *dash; /* Pointer to record in which to
|
779 |
* store dash information. */
|
780 |
{
|
781 |
int argc, i;
|
782 |
char **largv, **argv = NULL;
|
783 |
char *pt;
|
784 |
|
785 |
if ((value==(char *) NULL) || (*value==0) ) {
|
786 |
dash->number = 0;
|
787 |
return TCL_OK;
|
788 |
}
|
789 |
if ((*value == '.') || (*value == ',') ||
|
790 |
(*value == '-') || (*value == '_')) {
|
791 |
i = DashConvert((char *) NULL, value, -1, 0.0);
|
792 |
if (i>0) {
|
793 |
i = strlen(value);
|
794 |
} else {
|
795 |
goto badDashList;
|
796 |
}
|
797 |
if (i > sizeof(char *)) {
|
798 |
dash->pattern.pt = pt = (char *) ckalloc(strlen(value));
|
799 |
} else {
|
800 |
pt = dash->pattern.array;
|
801 |
}
|
802 |
memcpy(pt,value, (unsigned int) i);
|
803 |
dash->number = -i;
|
804 |
return TCL_OK;
|
805 |
}
|
806 |
if (Tcl_SplitList(interp, (char *) value, &argc, &argv) != TCL_OK) {
|
807 |
Tcl_ResetResult(interp);
|
808 |
badDashList:
|
809 |
Tcl_AppendResult(interp, "bad dash list \"", value,
|
810 |
"\": must be a list of integers or a format like \"-..\"",
|
811 |
(char *) NULL);
|
812 |
syntaxError:
|
813 |
if (argv != NULL) {
|
814 |
ckfree((char *) argv);
|
815 |
}
|
816 |
if (ABS(dash->number) > sizeof(char *))
|
817 |
ckfree((char *) dash->pattern.pt);
|
818 |
dash->number = 0;
|
819 |
return TCL_ERROR;
|
820 |
}
|
821 |
|
822 |
if (ABS(dash->number) > sizeof(char *)) {
|
823 |
ckfree((char *) dash->pattern.pt);
|
824 |
}
|
825 |
if (argc > sizeof(char *)) {
|
826 |
dash->pattern.pt = pt = (char *) ckalloc((unsigned int) argc);
|
827 |
} else {
|
828 |
pt = dash->pattern.array;
|
829 |
}
|
830 |
dash->number = argc;
|
831 |
|
832 |
largv = argv;
|
833 |
while(argc>0) {
|
834 |
if (Tcl_GetInt(interp, *largv, &i) != TCL_OK ||
|
835 |
i < 1 || i>255) {
|
836 |
Tcl_ResetResult(interp);
|
837 |
Tcl_AppendResult(interp, "expected integer in the range 1..255 but got \"",
|
838 |
*largv, "\"", (char *) NULL);
|
839 |
goto syntaxError;
|
840 |
}
|
841 |
*pt++ = i;
|
842 |
argc--; largv++;
|
843 |
}
|
844 |
|
845 |
if (argv != NULL) {
|
846 |
ckfree((char *) argv);
|
847 |
}
|
848 |
|
849 |
return TCL_OK;
|
850 |
}
|
851 |
|
852 |
/*
|
853 |
*--------------------------------------------------------------
|
854 |
*
|
855 |
* Tk_CreateOutline
|
856 |
*
|
857 |
* This procedure initializes the Tk_Outline structure
|
858 |
* with default values.
|
859 |
*
|
860 |
* Results:
|
861 |
* None
|
862 |
*
|
863 |
* Side effects:
|
864 |
* None
|
865 |
*
|
866 |
*--------------------------------------------------------------
|
867 |
*/
|
868 |
|
869 |
void Tk_CreateOutline(outline)
|
870 |
Tk_Outline *outline;
|
871 |
{
|
872 |
outline->gc = None;
|
873 |
outline->width = 1.0;
|
874 |
outline->activeWidth = 0.0;
|
875 |
outline->disabledWidth = 0.0;
|
876 |
outline->offset = 0;
|
877 |
outline->dash.number = 0;
|
878 |
outline->activeDash.number = 0;
|
879 |
outline->disabledDash.number = 0;
|
880 |
outline->tsoffset.flags = 0;
|
881 |
outline->tsoffset.xoffset = 0;
|
882 |
outline->tsoffset.yoffset = 0;
|
883 |
outline->color = NULL;
|
884 |
outline->activeColor = NULL;
|
885 |
outline->disabledColor = NULL;
|
886 |
outline->stipple = None;
|
887 |
outline->activeStipple = None;
|
888 |
outline->disabledStipple = None;
|
889 |
}
|
890 |
|
891 |
/*
|
892 |
*--------------------------------------------------------------
|
893 |
*
|
894 |
* Tk_DeleteOutline
|
895 |
*
|
896 |
* This procedure frees all memory that might be
|
897 |
* allocated and referenced in the Tk_Outline structure.
|
898 |
*
|
899 |
* Results:
|
900 |
* None
|
901 |
*
|
902 |
* Side effects:
|
903 |
* None
|
904 |
*
|
905 |
*--------------------------------------------------------------
|
906 |
*/
|
907 |
|
908 |
void Tk_DeleteOutline(display, outline)
|
909 |
Display *display; /* Display containing window */
|
910 |
Tk_Outline *outline;
|
911 |
{
|
912 |
if (outline->gc != None) {
|
913 |
Tk_FreeGC(display, outline->gc);
|
914 |
}
|
915 |
if (ABS(outline->dash.number) > sizeof(char *)) {
|
916 |
ckfree((char *) outline->dash.pattern.pt);
|
917 |
}
|
918 |
if (ABS(outline->activeDash.number) > sizeof(char *)) {
|
919 |
ckfree((char *) outline->activeDash.pattern.pt);
|
920 |
}
|
921 |
if (ABS(outline->disabledDash.number) > sizeof(char *)) {
|
922 |
ckfree((char *) outline->disabledDash.pattern.pt);
|
923 |
}
|
924 |
if (outline->color != NULL) {
|
925 |
Tk_FreeColor(outline->color);
|
926 |
}
|
927 |
if (outline->activeColor != NULL) {
|
928 |
Tk_FreeColor(outline->activeColor);
|
929 |
}
|
930 |
if (outline->disabledColor != NULL) {
|
931 |
Tk_FreeColor(outline->disabledColor);
|
932 |
}
|
933 |
if (outline->stipple != None) {
|
934 |
Tk_FreeBitmap(display, outline->stipple);
|
935 |
}
|
936 |
if (outline->activeStipple != None) {
|
937 |
Tk_FreeBitmap(display, outline->activeStipple);
|
938 |
}
|
939 |
if (outline->disabledStipple != None) {
|
940 |
Tk_FreeBitmap(display, outline->disabledStipple);
|
941 |
}
|
942 |
}
|
943 |
|
944 |
/*
|
945 |
*--------------------------------------------------------------
|
946 |
*
|
947 |
* Tk_ConfigOutlineGC
|
948 |
*
|
949 |
* This procedure should be called in the canvas object
|
950 |
* during the configure command. The graphics context
|
951 |
* description in gcValues is updated according to the
|
952 |
* information in the dash structure, as far as possible.
|
953 |
*
|
954 |
* Results:
|
955 |
* The return-value is a mask, indicating which
|
956 |
* elements of gcValues have been updated.
|
957 |
* 0 means there is no outline.
|
958 |
*
|
959 |
* Side effects:
|
960 |
* GC information in gcValues is updated.
|
961 |
*
|
962 |
*--------------------------------------------------------------
|
963 |
*/
|
964 |
|
965 |
int Tk_ConfigOutlineGC(gcValues, canvas, item, outline)
|
966 |
XGCValues *gcValues;
|
967 |
Tk_Canvas canvas;
|
968 |
Tk_Item *item;
|
969 |
Tk_Outline *outline;
|
970 |
{
|
971 |
int mask = 0;
|
972 |
double width;
|
973 |
Tk_Dash *dash;
|
974 |
XColor *color;
|
975 |
Pixmap stipple;
|
976 |
Tk_State state = item->state;
|
977 |
|
978 |
if (outline->width < 0.0) {
|
979 |
outline->width = 0.0;
|
980 |
}
|
981 |
if (outline->activeWidth < 0.0) {
|
982 |
outline->activeWidth = 0.0;
|
983 |
}
|
984 |
if (outline->disabledWidth < 0) {
|
985 |
outline->disabledWidth = 0.0;
|
986 |
}
|
987 |
if (state==TK_STATE_HIDDEN) {
|
988 |
return 0;
|
989 |
}
|
990 |
|
991 |
width = outline->width;
|
992 |
if (width < 1.0) {
|
993 |
width = 1.0;
|
994 |
}
|
995 |
dash = &(outline->dash);
|
996 |
color = outline->color;
|
997 |
stipple = outline->stipple;
|
998 |
if (state == TK_STATE_NULL) {
|
999 |
state = ((TkCanvas *)canvas)->canvas_state;
|
1000 |
}
|
1001 |
if (((TkCanvas *)canvas)->currentItemPtr == item) {
|
1002 |
if (outline->activeWidth>width) {
|
1003 |
width = outline->activeWidth;
|
1004 |
}
|
1005 |
if (outline->activeDash.number != 0) {
|
1006 |
dash = &(outline->activeDash);
|
1007 |
}
|
1008 |
if (outline->activeColor!=NULL) {
|
1009 |
color = outline->activeColor;
|
1010 |
}
|
1011 |
if (outline->activeStipple!=None) {
|
1012 |
stipple = outline->activeStipple;
|
1013 |
}
|
1014 |
} else if (state==TK_STATE_DISABLED) {
|
1015 |
if (outline->disabledWidth>0) {
|
1016 |
width = outline->disabledWidth;
|
1017 |
}
|
1018 |
if (outline->disabledDash.number != 0) {
|
1019 |
dash = &(outline->disabledDash);
|
1020 |
}
|
1021 |
if (outline->disabledColor!=NULL) {
|
1022 |
color = outline->disabledColor;
|
1023 |
}
|
1024 |
if (outline->disabledStipple!=None) {
|
1025 |
stipple = outline->disabledStipple;
|
1026 |
}
|
1027 |
}
|
1028 |
|
1029 |
if (color==NULL) {
|
1030 |
return 0;
|
1031 |
}
|
1032 |
|
1033 |
gcValues->line_width = (int) (width + 0.5);
|
1034 |
if (color != NULL) {
|
1035 |
gcValues->foreground = color->pixel;
|
1036 |
mask = GCForeground|GCLineWidth;
|
1037 |
if (stipple != None) {
|
1038 |
gcValues->stipple = stipple;
|
1039 |
gcValues->fill_style = FillStippled;
|
1040 |
mask |= GCStipple|GCFillStyle;
|
1041 |
}
|
1042 |
}
|
1043 |
if (mask && (dash->number != 0)) {
|
1044 |
gcValues->line_style = LineOnOffDash;
|
1045 |
gcValues->dash_offset = outline->offset;
|
1046 |
if (dash->number >= 2) {
|
1047 |
gcValues->dashes = 4;
|
1048 |
} else if (dash->number > 0) {
|
1049 |
gcValues->dashes = dash->pattern.array[0];
|
1050 |
} else {
|
1051 |
gcValues->dashes = (char) (4 * width);
|
1052 |
}
|
1053 |
mask |= GCLineStyle|GCDashList|GCDashOffset;
|
1054 |
}
|
1055 |
return mask;
|
1056 |
}
|
1057 |
|
1058 |
/*
|
1059 |
*--------------------------------------------------------------
|
1060 |
*
|
1061 |
* Tk_ChangeOutlineGC
|
1062 |
*
|
1063 |
* Updates the GC to represent the full information of
|
1064 |
* the dash structure. Partly this is already done in
|
1065 |
* Tk_ConfigOutlineGC().
|
1066 |
* This function should be called just before drawing
|
1067 |
* the dashed item.
|
1068 |
*
|
1069 |
* Results:
|
1070 |
* 1 if there is a stipple pattern.
|
1071 |
* 0 otherwise.
|
1072 |
*
|
1073 |
* Side effects:
|
1074 |
* GC is updated.
|
1075 |
*
|
1076 |
*--------------------------------------------------------------
|
1077 |
*/
|
1078 |
|
1079 |
int
|
1080 |
Tk_ChangeOutlineGC(canvas, item, outline)
|
1081 |
Tk_Canvas canvas;
|
1082 |
Tk_Item *item;
|
1083 |
Tk_Outline *outline;
|
1084 |
{
|
1085 |
CONST char *p;
|
1086 |
double width;
|
1087 |
Tk_Dash *dash;
|
1088 |
XColor *color;
|
1089 |
Pixmap stipple;
|
1090 |
Tk_State state = item->state;
|
1091 |
|
1092 |
width = outline->width;
|
1093 |
if (width < 1.0) {
|
1094 |
width = 1.0;
|
1095 |
}
|
1096 |
dash = &(outline->dash);
|
1097 |
color = outline->color;
|
1098 |
stipple = outline->stipple;
|
1099 |
if (state == TK_STATE_NULL) {
|
1100 |
state = ((TkCanvas *)canvas)->canvas_state;
|
1101 |
}
|
1102 |
if (((TkCanvas *)canvas)->currentItemPtr == item) {
|
1103 |
if (outline->activeWidth > width) {
|
1104 |
width = outline->activeWidth;
|
1105 |
}
|
1106 |
if (outline->activeDash.number != 0) {
|
1107 |
dash = &(outline->activeDash);
|
1108 |
}
|
1109 |
if (outline->activeColor != NULL) {
|
1110 |
color = outline->activeColor;
|
1111 |
}
|
1112 |
if (outline->activeStipple != None) {
|
1113 |
stipple = outline->activeStipple;
|
1114 |
}
|
1115 |
} else if (state == TK_STATE_DISABLED) {
|
1116 |
if (outline->disabledWidth > width) {
|
1117 |
width = outline->disabledWidth;
|
1118 |
}
|
1119 |
if (outline->disabledDash.number != 0) {
|
1120 |
dash = &(outline->disabledDash);
|
1121 |
}
|
1122 |
if (outline->disabledColor != NULL) {
|
1123 |
color = outline->disabledColor;
|
1124 |
}
|
1125 |
if (outline->disabledStipple != None) {
|
1126 |
stipple = outline->disabledStipple;
|
1127 |
}
|
1128 |
}
|
1129 |
if (color==NULL) {
|
1130 |
return 0;
|
1131 |
}
|
1132 |
|
1133 |
if ((dash->number<-1) || ((dash->number == -1) && (dash->pattern.array[1]!=','))) {
|
1134 |
char *q;
|
1135 |
int i = -dash->number;
|
1136 |
|
1137 |
p = (i > sizeof(char *)) ? dash->pattern.pt : dash->pattern.array;
|
1138 |
q = (char *) ckalloc(2*(unsigned int)i);
|
1139 |
i = DashConvert(q, p, i, width);
|
1140 |
XSetDashes(((TkCanvas *)canvas)->display, outline->gc, outline->offset, q, i);
|
1141 |
ckfree(q);
|
1142 |
} else if ( dash->number>2 || (dash->number==2 &&
|
1143 |
(dash->pattern.array[0]!=dash->pattern.array[1]))) {
|
1144 |
p = (char *) (dash->number > sizeof(char *)) ? dash->pattern.pt : dash->pattern.array;
|
1145 |
XSetDashes(((TkCanvas *)canvas)->display, outline->gc, outline->offset, p, dash->number);
|
1146 |
}
|
1147 |
if (stipple!=None) {
|
1148 |
int w=0; int h=0;
|
1149 |
Tk_TSOffset *tsoffset = &outline->tsoffset;
|
1150 |
int flags = tsoffset->flags;
|
1151 |
if (!(flags & TK_OFFSET_INDEX) && (flags & (TK_OFFSET_CENTER|TK_OFFSET_MIDDLE))) {
|
1152 |
Tk_SizeOfBitmap(((TkCanvas *)canvas)->display, stipple, &w, &h);
|
1153 |
if (flags & TK_OFFSET_CENTER) {
|
1154 |
w /= 2;
|
1155 |
} else {
|
1156 |
w = 0;
|
1157 |
}
|
1158 |
if (flags & TK_OFFSET_MIDDLE) {
|
1159 |
h /= 2;
|
1160 |
} else {
|
1161 |
h = 0;
|
1162 |
}
|
1163 |
}
|
1164 |
tsoffset->xoffset -= w;
|
1165 |
tsoffset->yoffset -= h;
|
1166 |
Tk_CanvasSetOffset(canvas, outline->gc, tsoffset);
|
1167 |
tsoffset->xoffset += w;
|
1168 |
tsoffset->yoffset += h;
|
1169 |
return 1;
|
1170 |
}
|
1171 |
return 0;
|
1172 |
}
|
1173 |
|
1174 |
|
1175 |
/*
|
1176 |
*--------------------------------------------------------------
|
1177 |
*
|
1178 |
* Tk_ResetOutlineGC
|
1179 |
*
|
1180 |
* Restores the GC to the situation before
|
1181 |
* Tk_ChangeDashGC() was called.
|
1182 |
* This function should be called just after the dashed
|
1183 |
* item is drawn, because the GC is supposed to be
|
1184 |
* read-only.
|
1185 |
*
|
1186 |
* Results:
|
1187 |
* 1 if there is a stipple pattern.
|
1188 |
* 0 otherwise.
|
1189 |
*
|
1190 |
* Side effects:
|
1191 |
* GC is updated.
|
1192 |
*
|
1193 |
*--------------------------------------------------------------
|
1194 |
*/
|
1195 |
int
|
1196 |
Tk_ResetOutlineGC(canvas, item, outline)
|
1197 |
Tk_Canvas canvas;
|
1198 |
Tk_Item *item;
|
1199 |
Tk_Outline *outline;
|
1200 |
{
|
1201 |
char dashList;
|
1202 |
double width;
|
1203 |
Tk_Dash *dash;
|
1204 |
XColor *color;
|
1205 |
Pixmap stipple;
|
1206 |
Tk_State state = item->state;
|
1207 |
|
1208 |
width = outline->width;
|
1209 |
if (width < 1.0) {
|
1210 |
width = 1.0;
|
1211 |
}
|
1212 |
dash = &(outline->dash);
|
1213 |
color = outline->color;
|
1214 |
stipple = outline->stipple;
|
1215 |
if (state == TK_STATE_NULL) {
|
1216 |
state = ((TkCanvas *)canvas)->canvas_state;
|
1217 |
}
|
1218 |
if (((TkCanvas *)canvas)->currentItemPtr == item) {
|
1219 |
if (outline->activeWidth>width) {
|
1220 |
width = outline->activeWidth;
|
1221 |
}
|
1222 |
if (outline->activeDash.number != 0) {
|
1223 |
dash = &(outline->activeDash);
|
1224 |
}
|
1225 |
if (outline->activeColor!=NULL) {
|
1226 |
color = outline->activeColor;
|
1227 |
}
|
1228 |
if (outline->activeStipple!=None) {
|
1229 |
stipple = outline->activeStipple;
|
1230 |
}
|
1231 |
} else if (state==TK_STATE_DISABLED) {
|
1232 |
if (outline->disabledWidth>width) {
|
1233 |
width = outline->disabledWidth;
|
1234 |
}
|
1235 |
if (outline->disabledDash.number != 0) {
|
1236 |
dash = &(outline->disabledDash);
|
1237 |
}
|
1238 |
if (outline->disabledColor!=NULL) {
|
1239 |
color = outline->disabledColor;
|
1240 |
}
|
1241 |
if (outline->disabledStipple!=None) {
|
1242 |
stipple = outline->disabledStipple;
|
1243 |
}
|
1244 |
}
|
1245 |
if (color==NULL) {
|
1246 |
return 0;
|
1247 |
}
|
1248 |
|
1249 |
if ((dash->number > 2) || (dash->number < -1) || (dash->number==2 &&
|
1250 |
(dash->pattern.array[0] != dash->pattern.array[1])) ||
|
1251 |
((dash->number == -1) && (dash->pattern.array[1] != ','))) {
|
1252 |
if (dash->number < 0) {
|
1253 |
dashList = (int) (4 * width + 0.5);
|
1254 |
} else if (dash->number<3) {
|
1255 |
dashList = dash->pattern.array[0];
|
1256 |
} else {
|
1257 |
dashList = 4;
|
1258 |
}
|
1259 |
XSetDashes(((TkCanvas *)canvas)->display, outline->gc,
|
1260 |
outline->offset, &dashList , 1);
|
1261 |
}
|
1262 |
if (stipple != None) {
|
1263 |
XSetTSOrigin(((TkCanvas *)canvas)->display, outline->gc, 0, 0);
|
1264 |
return 1;
|
1265 |
}
|
1266 |
return 0;
|
1267 |
}
|
1268 |
|
1269 |
|
1270 |
/*
|
1271 |
*--------------------------------------------------------------
|
1272 |
*
|
1273 |
* Tk_CanvasPsOutline
|
1274 |
*
|
1275 |
* Creates the postscript command for the correct
|
1276 |
* Outline-information (width, dash, color and stipple).
|
1277 |
*
|
1278 |
* Results:
|
1279 |
* TCL_OK if succeeded, otherwise TCL_ERROR.
|
1280 |
*
|
1281 |
* Side effects:
|
1282 |
* canvas->interp->result contains the postscript string,
|
1283 |
* or an error message if the result was TCL_ERROR.
|
1284 |
*
|
1285 |
*--------------------------------------------------------------
|
1286 |
*/
|
1287 |
int
|
1288 |
Tk_CanvasPsOutline(canvas, item, outline)
|
1289 |
Tk_Canvas canvas;
|
1290 |
Tk_Item *item;
|
1291 |
Tk_Outline *outline;
|
1292 |
{
|
1293 |
char string[41];
|
1294 |
char pattern[11];
|
1295 |
int i;
|
1296 |
char *ptr;
|
1297 |
char *str = string;
|
1298 |
char *lptr = pattern;
|
1299 |
Tcl_Interp *interp = ((TkCanvas *)canvas)->interp;
|
1300 |
double width;
|
1301 |
Tk_Dash *dash;
|
1302 |
XColor *color;
|
1303 |
Pixmap stipple;
|
1304 |
Tk_State state = item->state;
|
1305 |
|
1306 |
width = outline->width;
|
1307 |
dash = &(outline->dash);
|
1308 |
color = outline->color;
|
1309 |
stipple = outline->stipple;
|
1310 |
if (state == TK_STATE_NULL) {
|
1311 |
state = ((TkCanvas *)canvas)->canvas_state;
|
1312 |
}
|
1313 |
if (((TkCanvas *)canvas)->currentItemPtr == item) {
|
1314 |
if (outline->activeWidth > width) {
|
1315 |
width = outline->activeWidth;
|
1316 |
}
|
1317 |
if (outline->activeDash.number > 0) {
|
1318 |
dash = &(outline->activeDash);
|
1319 |
}
|
1320 |
if (outline->activeColor != NULL) {
|
1321 |
color = outline->activeColor;
|
1322 |
}
|
1323 |
if (outline->activeStipple != None) {
|
1324 |
stipple = outline->activeStipple;
|
1325 |
}
|
1326 |
} else if (state == TK_STATE_DISABLED) {
|
1327 |
if (outline->disabledWidth > 0) {
|
1328 |
width = outline->disabledWidth;
|
1329 |
}
|
1330 |
if (outline->disabledDash.number > 0) {
|
1331 |
dash = &(outline->disabledDash);
|
1332 |
}
|
1333 |
if (outline->disabledColor != NULL) {
|
1334 |
color = outline->disabledColor;
|
1335 |
}
|
1336 |
if (outline->disabledStipple != None) {
|
1337 |
stipple = outline->disabledStipple;
|
1338 |
}
|
1339 |
}
|
1340 |
sprintf(string, "%.15g setlinewidth\n", width);
|
1341 |
Tcl_AppendResult(interp, string, (char *) NULL);
|
1342 |
|
1343 |
if (dash->number > 10) {
|
1344 |
str = (char *)ckalloc((unsigned int) (1 + 4*dash->number));
|
1345 |
} else if (dash->number < -5) {
|
1346 |
str = (char *)ckalloc((unsigned int) (1 - 8*dash->number));
|
1347 |
lptr = (char *)ckalloc((unsigned int) (1 - 2*dash->number));
|
1348 |
}
|
1349 |
ptr = (char *) ((ABS(dash->number) > sizeof(char *)) ) ?
|
1350 |
dash->pattern.pt : dash->pattern.array;
|
1351 |
if (dash->number > 0) {
|
1352 |
char *ptr0 = ptr;
|
1353 |
sprintf(str, "[%d", *ptr++ & 0xff);
|
1354 |
i = dash->number-1;
|
1355 |
while (i--) {
|
1356 |
sprintf(str+strlen(str), " %d", *ptr++ & 0xff);
|
1357 |
}
|
1358 |
Tcl_AppendResult(interp, str, (char *)NULL);
|
1359 |
if (dash->number&1) {
|
1360 |
Tcl_AppendResult(interp, " ", str+1, (char *)NULL);
|
1361 |
}
|
1362 |
sprintf(str, "] %d setdash\n", outline->offset);
|
1363 |
Tcl_AppendResult(interp, str, (char *)NULL);
|
1364 |
ptr = ptr0;
|
1365 |
} else if (dash->number < 0) {
|
1366 |
if ((i = DashConvert(lptr, ptr, -dash->number, width)) != 0) {
|
1367 |
char *lptr0 = lptr;
|
1368 |
sprintf(str, "[%d", *lptr++ & 0xff);
|
1369 |
while (--i) {
|
1370 |
sprintf(str+strlen(str), " %d", *lptr++ & 0xff);
|
1371 |
}
|
1372 |
Tcl_AppendResult(interp, str, (char *)NULL);
|
1373 |
sprintf(str, "] %d setdash\n", outline->offset);
|
1374 |
Tcl_AppendResult(interp, str, (char *)NULL);
|
1375 |
lptr = lptr0;
|
1376 |
} else {
|
1377 |
Tcl_AppendResult(interp, "[] 0 setdash\n", (char *)NULL);
|
1378 |
}
|
1379 |
} else {
|
1380 |
Tcl_AppendResult(interp, "[] 0 setdash\n", (char *)NULL);
|
1381 |
}
|
1382 |
if (str != string) {
|
1383 |
ckfree(str);
|
1384 |
}
|
1385 |
if (lptr != pattern) {
|
1386 |
ckfree(lptr);
|
1387 |
}
|
1388 |
if (Tk_CanvasPsColor(interp, canvas, color) != TCL_OK) {
|
1389 |
return TCL_ERROR;
|
1390 |
}
|
1391 |
if (stipple != None) {
|
1392 |
Tcl_AppendResult(interp, "StrokeClip ", (char *) NULL);
|
1393 |
if (Tk_CanvasPsStipple(interp, canvas, stipple) != TCL_OK) {
|
1394 |
return TCL_ERROR;
|
1395 |
}
|
1396 |
} else {
|
1397 |
Tcl_AppendResult(interp, "stroke\n", (char *) NULL);
|
1398 |
}
|
1399 |
|
1400 |
return TCL_OK;
|
1401 |
}
|
1402 |
|
1403 |
|
1404 |
/*
|
1405 |
*--------------------------------------------------------------
|
1406 |
*
|
1407 |
* DashConvert
|
1408 |
*
|
1409 |
* Converts a character-like dash-list (e.g. "-..")
|
1410 |
* into an X11-style. l must point to a string that
|
1411 |
* holds room to at least 2*n characters. if
|
1412 |
* l == NULL, this function can be used for
|
1413 |
* syntax checking only.
|
1414 |
*
|
1415 |
* Results:
|
1416 |
* The length of the resulting X11 compatible
|
1417 |
* dash-list. -1 if failed.
|
1418 |
*
|
1419 |
* Side effects:
|
1420 |
* None
|
1421 |
*
|
1422 |
*--------------------------------------------------------------
|
1423 |
*/
|
1424 |
|
1425 |
static int
|
1426 |
DashConvert (l, p, n, width)
|
1427 |
char *l;
|
1428 |
CONST char *p;
|
1429 |
int n;
|
1430 |
double width;
|
1431 |
{
|
1432 |
int result = 0;
|
1433 |
int size, intWidth;
|
1434 |
|
1435 |
if (n<0) {
|
1436 |
n = strlen(p);
|
1437 |
}
|
1438 |
intWidth = (int) (width + 0.5);
|
1439 |
if (intWidth < 1) {
|
1440 |
intWidth = 1;
|
1441 |
}
|
1442 |
while (n-- && *p) {
|
1443 |
switch (*p++) {
|
1444 |
case ' ':
|
1445 |
if (result) {
|
1446 |
if (l) {
|
1447 |
l[-1] += intWidth + 1;
|
1448 |
}
|
1449 |
continue;
|
1450 |
} else {
|
1451 |
return 0;
|
1452 |
}
|
1453 |
break;
|
1454 |
case '_':
|
1455 |
size = 8;
|
1456 |
break;
|
1457 |
case '-':
|
1458 |
size = 6;
|
1459 |
break;
|
1460 |
case ',':
|
1461 |
size = 4;
|
1462 |
break;
|
1463 |
case '.':
|
1464 |
size = 2;
|
1465 |
break;
|
1466 |
default:
|
1467 |
return -1;
|
1468 |
}
|
1469 |
if (l) {
|
1470 |
*l++ = size * intWidth;
|
1471 |
*l++ = 4 * intWidth;
|
1472 |
}
|
1473 |
result += 2;
|
1474 |
}
|
1475 |
return result;
|
1476 |
}
|
1477 |
|
1478 |
|
1479 |
/* $History: tkCanvUtil.c $
|
1480 |
*
|
1481 |
* ***************** Version 1 *****************
|
1482 |
* User: Dtashley Date: 1/02/01 Time: 2:42a
|
1483 |
* Created in $/IjuScripter, IjuConsole/Source/Tk Base
|
1484 |
* Initial check-in.
|
1485 |
*/
|
1486 |
|
1487 |
/* End of TKCANVUTIL.C */ |