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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tkplace.c,v 1.1.1.1 2001/06/13 05:07:09 dtashley Exp $ */
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/*
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* tkPlace.c --
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*
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* This file contains code to implement a simple geometry manager
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* for Tk based on absolute placement or "rubber-sheet" placement.
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*
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* Copyright (c) 1992-1994 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: tkplace.c,v 1.1.1.1 2001/06/13 05:07:09 dtashley Exp $
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*/
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#include "tkPort.h"
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#include "tkInt.h"
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/*
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* Border modes for relative placement:
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*
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* BM_INSIDE: relative distances computed using area inside
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* all borders of master window.
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* BM_OUTSIDE: relative distances computed using outside area
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* that includes all borders of master.
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* BM_IGNORE: border issues are ignored: place relative to
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* master's actual window size.
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*/
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typedef enum {BM_INSIDE, BM_OUTSIDE, BM_IGNORE} BorderMode;
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/*
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* For each window whose geometry is managed by the placer there is
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* a structure of the following type:
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*/
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typedef struct Slave {
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Tk_Window tkwin; /* Tk's token for window. */
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struct Master *masterPtr; /* Pointer to information for window
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* relative to which tkwin is placed.
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* This isn't necessarily the logical
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* parent of tkwin. NULL means the
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* master was deleted or never assigned. */
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struct Slave *nextPtr; /* Next in list of windows placed relative
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* to same master (NULL for end of list). */
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/*
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* Geometry information for window; where there are both relative
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* and absolute values for the same attribute (e.g. x and relX) only
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* one of them is actually used, depending on flags.
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*/
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int x, y; /* X and Y pixel coordinates for tkwin. */
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float relX, relY; /* X and Y coordinates relative to size of
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* master. */
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int width, height; /* Absolute dimensions for tkwin. */
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float relWidth, relHeight; /* Dimensions for tkwin relative to size of
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* master. */
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Tk_Anchor anchor; /* Which point on tkwin is placed at the
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* given position. */
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BorderMode borderMode; /* How to treat borders of master window. */
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int flags; /* Various flags; see below for bit
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* definitions. */
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} Slave;
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/*
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* Flag definitions for Slave structures:
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*
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* CHILD_WIDTH - 1 means -width was specified;
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* CHILD_REL_WIDTH - 1 means -relwidth was specified.
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* CHILD_HEIGHT - 1 means -height was specified;
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* CHILD_REL_HEIGHT - 1 means -relheight was specified.
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*/
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#define CHILD_WIDTH 1
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#define CHILD_REL_WIDTH 2
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#define CHILD_HEIGHT 4
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#define CHILD_REL_HEIGHT 8
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/*
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* For each master window that has a slave managed by the placer there
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* is a structure of the following form:
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*/
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typedef struct Master {
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Tk_Window tkwin; /* Tk's token for master window. */
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struct Slave *slavePtr; /* First in linked list of slaves
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* placed relative to this master. */
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int flags; /* See below for bit definitions. */
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} Master;
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/*
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* Flag definitions for masters:
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*
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* PARENT_RECONFIG_PENDING - 1 means that a call to RecomputePlacement
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* is already pending via a Do_When_Idle handler.
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*/
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#define PARENT_RECONFIG_PENDING 1
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/*
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* The following structure is the official type record for the
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* placer:
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*/
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static void PlaceRequestProc _ANSI_ARGS_((ClientData clientData,
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Tk_Window tkwin));
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static void PlaceLostSlaveProc _ANSI_ARGS_((ClientData clientData,
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Tk_Window tkwin));
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static Tk_GeomMgr placerType = {
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"place", /* name */
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PlaceRequestProc, /* requestProc */
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PlaceLostSlaveProc, /* lostSlaveProc */
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};
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/*
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* Forward declarations for procedures defined later in this file:
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*/
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static void SlaveStructureProc _ANSI_ARGS_((ClientData clientData,
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XEvent *eventPtr));
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static int ConfigureSlave _ANSI_ARGS_((Tcl_Interp *interp,
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Slave *slavePtr, int argc, char **argv));
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static Slave * FindSlave _ANSI_ARGS_((Tk_Window tkwin));
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static Master * FindMaster _ANSI_ARGS_((Tk_Window tkwin));
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static void MasterStructureProc _ANSI_ARGS_((ClientData clientData,
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XEvent *eventPtr));
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static void RecomputePlacement _ANSI_ARGS_((ClientData clientData));
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static void UnlinkSlave _ANSI_ARGS_((Slave *slavePtr));
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/*
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*--------------------------------------------------------------
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*
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* Tk_PlaceCmd --
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*
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* This procedure is invoked to process the "place" Tcl
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* commands. See the user documentation for details on
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* what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*--------------------------------------------------------------
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*/
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int
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Tk_PlaceCmd(clientData, interp, argc, argv)
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ClientData clientData; /* Main window associated with interpreter. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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Tk_Window tkwin;
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Slave *slavePtr;
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Tcl_HashEntry *hPtr;
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size_t length;
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int c;
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TkDisplay *dispPtr;
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dispPtr = ((TkWindow *) clientData)->dispPtr;
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/*
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* Initialize, if that hasn't been done yet.
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*/
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if (!dispPtr->placeInit) {
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Tcl_InitHashTable(&dispPtr->masterTable, TCL_ONE_WORD_KEYS);
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Tcl_InitHashTable(&dispPtr->slaveTable, TCL_ONE_WORD_KEYS);
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dispPtr->placeInit = 1;
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}
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if (argc < 3) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " option|pathName args", (char *) NULL);
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return TCL_ERROR;
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}
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c = argv[1][0];
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length = strlen(argv[1]);
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/*
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* Handle special shortcut where window name is first argument.
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*/
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if (c == '.') {
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tkwin = Tk_NameToWindow(interp, argv[1], (Tk_Window) clientData);
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if (tkwin == NULL) {
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return TCL_ERROR;
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}
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slavePtr = FindSlave(tkwin);
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return ConfigureSlave(interp, slavePtr, argc-2, argv+2);
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}
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/*
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* Handle more general case of option followed by window name followed
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* by possible additional arguments.
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*/
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tkwin = Tk_NameToWindow(interp, argv[2], (Tk_Window) clientData);
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if (tkwin == NULL) {
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return TCL_ERROR;
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}
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if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)) {
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if (argc < 5) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0],
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" configure pathName option value ?option value ...?\"",
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(char *) NULL);
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return TCL_ERROR;
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}
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slavePtr = FindSlave(tkwin);
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return ConfigureSlave(interp, slavePtr, argc-3, argv+3);
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} else if ((c == 'f') && (strncmp(argv[1], "forget", length) == 0)) {
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if (argc != 3) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " forget pathName\"", (char *) NULL);
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return TCL_ERROR;
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}
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hPtr = Tcl_FindHashEntry(&dispPtr->slaveTable, (char *) tkwin);
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if (hPtr == NULL) {
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return TCL_OK;
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}
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slavePtr = (Slave *) Tcl_GetHashValue(hPtr);
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if ((slavePtr->masterPtr != NULL) &&
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(slavePtr->masterPtr->tkwin != Tk_Parent(slavePtr->tkwin))) {
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Tk_UnmaintainGeometry(slavePtr->tkwin,
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slavePtr->masterPtr->tkwin);
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}
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UnlinkSlave(slavePtr);
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Tcl_DeleteHashEntry(hPtr);
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Tk_DeleteEventHandler(tkwin, StructureNotifyMask, SlaveStructureProc,
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(ClientData) slavePtr);
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Tk_ManageGeometry(tkwin, (Tk_GeomMgr *) NULL, (ClientData) NULL);
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Tk_UnmapWindow(tkwin);
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ckfree((char *) slavePtr);
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} else if ((c == 'i') && (strncmp(argv[1], "info", length) == 0)) {
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char buffer[32 + TCL_INTEGER_SPACE];
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if (argc != 3) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " info pathName\"", (char *) NULL);
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return TCL_ERROR;
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}
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hPtr = Tcl_FindHashEntry(&dispPtr->slaveTable, (char *) tkwin);
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if (hPtr == NULL) {
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return TCL_OK;
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}
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slavePtr = (Slave *) Tcl_GetHashValue(hPtr);
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sprintf(buffer, "-x %d", slavePtr->x);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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sprintf(buffer, " -relx %.4g", slavePtr->relX);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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sprintf(buffer, " -y %d", slavePtr->y);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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sprintf(buffer, " -rely %.4g", slavePtr->relY);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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if (slavePtr->flags & CHILD_WIDTH) {
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sprintf(buffer, " -width %d", slavePtr->width);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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} else {
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Tcl_AppendResult(interp, " -width {}", (char *) NULL);
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}
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if (slavePtr->flags & CHILD_REL_WIDTH) {
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sprintf(buffer, " -relwidth %.4g", slavePtr->relWidth);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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} else {
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Tcl_AppendResult(interp, " -relwidth {}", (char *) NULL);
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}
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if (slavePtr->flags & CHILD_HEIGHT) {
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sprintf(buffer, " -height %d", slavePtr->height);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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} else {
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Tcl_AppendResult(interp, " -height {}", (char *) NULL);
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}
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if (slavePtr->flags & CHILD_REL_HEIGHT) {
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sprintf(buffer, " -relheight %.4g", slavePtr->relHeight);
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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} else {
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Tcl_AppendResult(interp, " -relheight {}", (char *) NULL);
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285 |
}
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286 |
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Tcl_AppendResult(interp, " -anchor ", Tk_NameOfAnchor(slavePtr->anchor),
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288 |
(char *) NULL);
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289 |
if (slavePtr->borderMode == BM_OUTSIDE) {
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Tcl_AppendResult(interp, " -bordermode outside", (char *) NULL);
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} else if (slavePtr->borderMode == BM_IGNORE) {
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Tcl_AppendResult(interp, " -bordermode ignore", (char *) NULL);
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293 |
}
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if ((slavePtr->masterPtr != NULL)
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&& (slavePtr->masterPtr->tkwin != Tk_Parent(slavePtr->tkwin))) {
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296 |
Tcl_AppendResult(interp, " -in ",
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297 |
Tk_PathName(slavePtr->masterPtr->tkwin), (char *) NULL);
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298 |
}
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299 |
} else if ((c == 's') && (strncmp(argv[1], "slaves", length) == 0)) {
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300 |
if (argc != 3) {
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301 |
Tcl_AppendResult(interp, "wrong # args: should be \"",
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302 |
argv[0], " slaves pathName\"", (char *) NULL);
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303 |
return TCL_ERROR;
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304 |
}
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305 |
hPtr = Tcl_FindHashEntry(&dispPtr->masterTable, (char *) tkwin);
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306 |
if (hPtr != NULL) {
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307 |
Master *masterPtr;
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308 |
masterPtr = (Master *) Tcl_GetHashValue(hPtr);
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309 |
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
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310 |
slavePtr = slavePtr->nextPtr) {
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311 |
Tcl_AppendElement(interp, Tk_PathName(slavePtr->tkwin));
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312 |
}
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313 |
}
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314 |
} else {
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315 |
Tcl_AppendResult(interp, "unknown or ambiguous option \"", argv[1],
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316 |
"\": must be configure, forget, info, or slaves",
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317 |
(char *) NULL);
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318 |
return TCL_ERROR;
|
319 |
}
|
320 |
return TCL_OK;
|
321 |
}
|
322 |
|
323 |
/*
|
324 |
*----------------------------------------------------------------------
|
325 |
*
|
326 |
* FindSlave --
|
327 |
*
|
328 |
* Given a Tk_Window token, find the Slave structure corresponding
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329 |
* to that token (making a new one if necessary).
|
330 |
*
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331 |
* Results:
|
332 |
* None.
|
333 |
*
|
334 |
* Side effects:
|
335 |
* A new Slave structure may be created.
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336 |
*
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337 |
*----------------------------------------------------------------------
|
338 |
*/
|
339 |
|
340 |
static Slave *
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341 |
FindSlave(tkwin)
|
342 |
Tk_Window tkwin; /* Token for desired slave. */
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343 |
{
|
344 |
Tcl_HashEntry *hPtr;
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345 |
register Slave *slavePtr;
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346 |
int new;
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347 |
TkDisplay * dispPtr = ((TkWindow *) tkwin)->dispPtr;
|
348 |
|
349 |
hPtr = Tcl_CreateHashEntry(&dispPtr->slaveTable, (char *) tkwin, &new);
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350 |
if (new) {
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351 |
slavePtr = (Slave *) ckalloc(sizeof(Slave));
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352 |
slavePtr->tkwin = tkwin;
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353 |
slavePtr->masterPtr = NULL;
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354 |
slavePtr->nextPtr = NULL;
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355 |
slavePtr->x = slavePtr->y = 0;
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356 |
slavePtr->relX = slavePtr->relY = (float) 0.0;
|
357 |
slavePtr->width = slavePtr->height = 0;
|
358 |
slavePtr->relWidth = slavePtr->relHeight = (float) 0.0;
|
359 |
slavePtr->anchor = TK_ANCHOR_NW;
|
360 |
slavePtr->borderMode = BM_INSIDE;
|
361 |
slavePtr->flags = 0;
|
362 |
Tcl_SetHashValue(hPtr, slavePtr);
|
363 |
Tk_CreateEventHandler(tkwin, StructureNotifyMask, SlaveStructureProc,
|
364 |
(ClientData) slavePtr);
|
365 |
Tk_ManageGeometry(tkwin, &placerType, (ClientData) slavePtr);
|
366 |
} else {
|
367 |
slavePtr = (Slave *) Tcl_GetHashValue(hPtr);
|
368 |
}
|
369 |
return slavePtr;
|
370 |
}
|
371 |
|
372 |
/*
|
373 |
*----------------------------------------------------------------------
|
374 |
*
|
375 |
* UnlinkSlave --
|
376 |
*
|
377 |
* This procedure removes a slave window from the chain of slaves
|
378 |
* in its master.
|
379 |
*
|
380 |
* Results:
|
381 |
* None.
|
382 |
*
|
383 |
* Side effects:
|
384 |
* The slave list of slavePtr's master changes.
|
385 |
*
|
386 |
*----------------------------------------------------------------------
|
387 |
*/
|
388 |
|
389 |
static void
|
390 |
UnlinkSlave(slavePtr)
|
391 |
Slave *slavePtr; /* Slave structure to be unlinked. */
|
392 |
{
|
393 |
register Master *masterPtr;
|
394 |
register Slave *prevPtr;
|
395 |
|
396 |
masterPtr = slavePtr->masterPtr;
|
397 |
if (masterPtr == NULL) {
|
398 |
return;
|
399 |
}
|
400 |
if (masterPtr->slavePtr == slavePtr) {
|
401 |
masterPtr->slavePtr = slavePtr->nextPtr;
|
402 |
} else {
|
403 |
for (prevPtr = masterPtr->slavePtr; ;
|
404 |
prevPtr = prevPtr->nextPtr) {
|
405 |
if (prevPtr == NULL) {
|
406 |
panic("UnlinkSlave couldn't find slave to unlink");
|
407 |
}
|
408 |
if (prevPtr->nextPtr == slavePtr) {
|
409 |
prevPtr->nextPtr = slavePtr->nextPtr;
|
410 |
break;
|
411 |
}
|
412 |
}
|
413 |
}
|
414 |
slavePtr->masterPtr = NULL;
|
415 |
}
|
416 |
|
417 |
/*
|
418 |
*----------------------------------------------------------------------
|
419 |
*
|
420 |
* FindMaster --
|
421 |
*
|
422 |
* Given a Tk_Window token, find the Master structure corresponding
|
423 |
* to that token (making a new one if necessary).
|
424 |
*
|
425 |
* Results:
|
426 |
* None.
|
427 |
*
|
428 |
* Side effects:
|
429 |
* A new Master structure may be created.
|
430 |
*
|
431 |
*----------------------------------------------------------------------
|
432 |
*/
|
433 |
|
434 |
static Master *
|
435 |
FindMaster(tkwin)
|
436 |
Tk_Window tkwin; /* Token for desired master. */
|
437 |
{
|
438 |
Tcl_HashEntry *hPtr;
|
439 |
register Master *masterPtr;
|
440 |
int new;
|
441 |
TkDisplay * dispPtr = ((TkWindow *) tkwin)->dispPtr;
|
442 |
|
443 |
hPtr = Tcl_CreateHashEntry(&dispPtr->masterTable, (char *) tkwin, &new);
|
444 |
if (new) {
|
445 |
masterPtr = (Master *) ckalloc(sizeof(Master));
|
446 |
masterPtr->tkwin = tkwin;
|
447 |
masterPtr->slavePtr = NULL;
|
448 |
masterPtr->flags = 0;
|
449 |
Tcl_SetHashValue(hPtr, masterPtr);
|
450 |
Tk_CreateEventHandler(masterPtr->tkwin, StructureNotifyMask,
|
451 |
MasterStructureProc, (ClientData) masterPtr);
|
452 |
} else {
|
453 |
masterPtr = (Master *) Tcl_GetHashValue(hPtr);
|
454 |
}
|
455 |
return masterPtr;
|
456 |
}
|
457 |
|
458 |
/*
|
459 |
*----------------------------------------------------------------------
|
460 |
*
|
461 |
* ConfigureSlave --
|
462 |
*
|
463 |
* This procedure is called to process an argv/argc list to
|
464 |
* reconfigure the placement of a window.
|
465 |
*
|
466 |
* Results:
|
467 |
* A standard Tcl result. If an error occurs then a message is
|
468 |
* left in the interp's result.
|
469 |
*
|
470 |
* Side effects:
|
471 |
* Information in slavePtr may change, and slavePtr's master is
|
472 |
* scheduled for reconfiguration.
|
473 |
*
|
474 |
*----------------------------------------------------------------------
|
475 |
*/
|
476 |
|
477 |
static int
|
478 |
ConfigureSlave(interp, slavePtr, argc, argv)
|
479 |
Tcl_Interp *interp; /* Used for error reporting. */
|
480 |
Slave *slavePtr; /* Pointer to current information
|
481 |
* about slave. */
|
482 |
int argc; /* Number of config arguments. */
|
483 |
char **argv; /* String values for arguments. */
|
484 |
{
|
485 |
register Master *masterPtr;
|
486 |
int c, result;
|
487 |
size_t length;
|
488 |
double d;
|
489 |
|
490 |
result = TCL_OK;
|
491 |
if (Tk_IsTopLevel(slavePtr->tkwin)) {
|
492 |
Tcl_AppendResult(interp, "can't use placer on top-level window \"",
|
493 |
Tk_PathName(slavePtr->tkwin), "\"; use wm command instead",
|
494 |
(char *) NULL);
|
495 |
return TCL_ERROR;
|
496 |
}
|
497 |
for ( ; argc > 0; argc -= 2, argv += 2) {
|
498 |
if (argc < 2) {
|
499 |
Tcl_AppendResult(interp, "extra option \"", argv[0],
|
500 |
"\" (option with no value?)", (char *) NULL);
|
501 |
result = TCL_ERROR;
|
502 |
goto done;
|
503 |
}
|
504 |
length = strlen(argv[0]);
|
505 |
c = argv[0][1];
|
506 |
if ((c == 'a') && (strncmp(argv[0], "-anchor", length) == 0)) {
|
507 |
if (Tk_GetAnchor(interp, argv[1], &slavePtr->anchor) != TCL_OK) {
|
508 |
result = TCL_ERROR;
|
509 |
goto done;
|
510 |
}
|
511 |
} else if ((c == 'b')
|
512 |
&& (strncmp(argv[0], "-bordermode", length) == 0)) {
|
513 |
c = argv[1][0];
|
514 |
length = strlen(argv[1]);
|
515 |
if ((c == 'i') && (strncmp(argv[1], "ignore", length) == 0)
|
516 |
&& (length >= 2)) {
|
517 |
slavePtr->borderMode = BM_IGNORE;
|
518 |
} else if ((c == 'i') && (strncmp(argv[1], "inside", length) == 0)
|
519 |
&& (length >= 2)) {
|
520 |
slavePtr->borderMode = BM_INSIDE;
|
521 |
} else if ((c == 'o')
|
522 |
&& (strncmp(argv[1], "outside", length) == 0)) {
|
523 |
slavePtr->borderMode = BM_OUTSIDE;
|
524 |
} else {
|
525 |
Tcl_AppendResult(interp, "bad border mode \"", argv[1],
|
526 |
"\": must be ignore, inside, or outside",
|
527 |
(char *) NULL);
|
528 |
result = TCL_ERROR;
|
529 |
goto done;
|
530 |
}
|
531 |
} else if ((c == 'h') && (strncmp(argv[0], "-height", length) == 0)) {
|
532 |
if (argv[1][0] == 0) {
|
533 |
slavePtr->flags &= ~CHILD_HEIGHT;
|
534 |
} else {
|
535 |
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
536 |
&slavePtr->height) != TCL_OK) {
|
537 |
result = TCL_ERROR;
|
538 |
goto done;
|
539 |
}
|
540 |
slavePtr->flags |= CHILD_HEIGHT;
|
541 |
}
|
542 |
} else if ((c == 'i') && (strncmp(argv[0], "-in", length) == 0)) {
|
543 |
Tk_Window tkwin;
|
544 |
Tk_Window ancestor;
|
545 |
|
546 |
tkwin = Tk_NameToWindow(interp, argv[1], slavePtr->tkwin);
|
547 |
if (tkwin == NULL) {
|
548 |
result = TCL_ERROR;
|
549 |
goto done;
|
550 |
}
|
551 |
|
552 |
/*
|
553 |
* Make sure that the new master is either the logical parent
|
554 |
* of the slave or a descendant of that window, and that the
|
555 |
* master and slave aren't the same.
|
556 |
*/
|
557 |
|
558 |
for (ancestor = tkwin; ; ancestor = Tk_Parent(ancestor)) {
|
559 |
if (ancestor == Tk_Parent(slavePtr->tkwin)) {
|
560 |
break;
|
561 |
}
|
562 |
if (Tk_IsTopLevel(ancestor)) {
|
563 |
Tcl_AppendResult(interp, "can't place ",
|
564 |
Tk_PathName(slavePtr->tkwin), " relative to ",
|
565 |
Tk_PathName(tkwin), (char *) NULL);
|
566 |
result = TCL_ERROR;
|
567 |
goto done;
|
568 |
}
|
569 |
}
|
570 |
if (slavePtr->tkwin == tkwin) {
|
571 |
Tcl_AppendResult(interp, "can't place ",
|
572 |
Tk_PathName(slavePtr->tkwin), " relative to itself",
|
573 |
(char *) NULL);
|
574 |
result = TCL_ERROR;
|
575 |
goto done;
|
576 |
}
|
577 |
if ((slavePtr->masterPtr != NULL)
|
578 |
&& (slavePtr->masterPtr->tkwin == tkwin)) {
|
579 |
/*
|
580 |
* Re-using same old master. Nothing to do.
|
581 |
*/
|
582 |
} else {
|
583 |
if ((slavePtr->masterPtr != NULL)
|
584 |
&& (slavePtr->masterPtr->tkwin
|
585 |
!= Tk_Parent(slavePtr->tkwin))) {
|
586 |
Tk_UnmaintainGeometry(slavePtr->tkwin,
|
587 |
slavePtr->masterPtr->tkwin);
|
588 |
}
|
589 |
UnlinkSlave(slavePtr);
|
590 |
slavePtr->masterPtr = FindMaster(tkwin);
|
591 |
slavePtr->nextPtr = slavePtr->masterPtr->slavePtr;
|
592 |
slavePtr->masterPtr->slavePtr = slavePtr;
|
593 |
}
|
594 |
} else if ((c == 'r') && (strncmp(argv[0], "-relheight", length) == 0)
|
595 |
&& (length >= 5)) {
|
596 |
if (argv[1][0] == 0) {
|
597 |
slavePtr->flags &= ~CHILD_REL_HEIGHT;
|
598 |
} else {
|
599 |
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
600 |
result = TCL_ERROR;
|
601 |
goto done;
|
602 |
}
|
603 |
slavePtr->relHeight = (float) d;
|
604 |
slavePtr->flags |= CHILD_REL_HEIGHT;
|
605 |
}
|
606 |
} else if ((c == 'r') && (strncmp(argv[0], "-relwidth", length) == 0)
|
607 |
&& (length >= 5)) {
|
608 |
if (argv[1][0] == 0) {
|
609 |
slavePtr->flags &= ~CHILD_REL_WIDTH;
|
610 |
} else {
|
611 |
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
612 |
result = TCL_ERROR;
|
613 |
goto done;
|
614 |
}
|
615 |
slavePtr->relWidth = (float) d;
|
616 |
slavePtr->flags |= CHILD_REL_WIDTH;
|
617 |
}
|
618 |
} else if ((c == 'r') && (strncmp(argv[0], "-relx", length) == 0)
|
619 |
&& (length >= 5)) {
|
620 |
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
621 |
result = TCL_ERROR;
|
622 |
goto done;
|
623 |
}
|
624 |
slavePtr->relX = (float) d;
|
625 |
} else if ((c == 'r') && (strncmp(argv[0], "-rely", length) == 0)
|
626 |
&& (length >= 5)) {
|
627 |
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
628 |
result = TCL_ERROR;
|
629 |
goto done;
|
630 |
}
|
631 |
slavePtr->relY = (float) d;
|
632 |
} else if ((c == 'w') && (strncmp(argv[0], "-width", length) == 0)) {
|
633 |
if (argv[1][0] == 0) {
|
634 |
slavePtr->flags &= ~CHILD_WIDTH;
|
635 |
} else {
|
636 |
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
637 |
&slavePtr->width) != TCL_OK) {
|
638 |
result = TCL_ERROR;
|
639 |
goto done;
|
640 |
}
|
641 |
slavePtr->flags |= CHILD_WIDTH;
|
642 |
}
|
643 |
} else if ((c == 'x') && (strncmp(argv[0], "-x", length) == 0)) {
|
644 |
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
645 |
&slavePtr->x) != TCL_OK) {
|
646 |
result = TCL_ERROR;
|
647 |
goto done;
|
648 |
}
|
649 |
} else if ((c == 'y') && (strncmp(argv[0], "-y", length) == 0)) {
|
650 |
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
651 |
&slavePtr->y) != TCL_OK) {
|
652 |
result = TCL_ERROR;
|
653 |
goto done;
|
654 |
}
|
655 |
} else {
|
656 |
Tcl_AppendResult(interp, "unknown or ambiguous option \"",
|
657 |
argv[0], "\": must be -anchor, -bordermode, -height, ",
|
658 |
"-in, -relheight, -relwidth, -relx, -rely, -width, ",
|
659 |
"-x, or -y", (char *) NULL);
|
660 |
result = TCL_ERROR;
|
661 |
goto done;
|
662 |
}
|
663 |
}
|
664 |
|
665 |
/*
|
666 |
* If there's no master specified for this slave, use its Tk_Parent.
|
667 |
* Then arrange for a placement recalculation in the master.
|
668 |
*/
|
669 |
|
670 |
done:
|
671 |
masterPtr = slavePtr->masterPtr;
|
672 |
if (masterPtr == NULL) {
|
673 |
masterPtr = FindMaster(Tk_Parent(slavePtr->tkwin));
|
674 |
slavePtr->masterPtr = masterPtr;
|
675 |
slavePtr->nextPtr = masterPtr->slavePtr;
|
676 |
masterPtr->slavePtr = slavePtr;
|
677 |
}
|
678 |
if (!(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
679 |
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
680 |
Tcl_DoWhenIdle(RecomputePlacement, (ClientData) masterPtr);
|
681 |
}
|
682 |
return result;
|
683 |
}
|
684 |
|
685 |
/*
|
686 |
*----------------------------------------------------------------------
|
687 |
*
|
688 |
* RecomputePlacement --
|
689 |
*
|
690 |
* This procedure is called as a when-idle handler. It recomputes
|
691 |
* the geometries of all the slaves of a given master.
|
692 |
*
|
693 |
* Results:
|
694 |
* None.
|
695 |
*
|
696 |
* Side effects:
|
697 |
* Windows may change size or shape.
|
698 |
*
|
699 |
*----------------------------------------------------------------------
|
700 |
*/
|
701 |
|
702 |
static void
|
703 |
RecomputePlacement(clientData)
|
704 |
ClientData clientData; /* Pointer to Master record. */
|
705 |
{
|
706 |
register Master *masterPtr = (Master *) clientData;
|
707 |
register Slave *slavePtr;
|
708 |
int x, y, width, height, tmp;
|
709 |
int masterWidth, masterHeight, masterBW;
|
710 |
double x1, y1, x2, y2;
|
711 |
|
712 |
masterPtr->flags &= ~PARENT_RECONFIG_PENDING;
|
713 |
|
714 |
/*
|
715 |
* Iterate over all the slaves for the master. Each slave's
|
716 |
* geometry can be computed independently of the other slaves.
|
717 |
*/
|
718 |
|
719 |
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
|
720 |
slavePtr = slavePtr->nextPtr) {
|
721 |
/*
|
722 |
* Step 1: compute size and borderwidth of master, taking into
|
723 |
* account desired border mode.
|
724 |
*/
|
725 |
|
726 |
masterBW = 0;
|
727 |
masterWidth = Tk_Width(masterPtr->tkwin);
|
728 |
masterHeight = Tk_Height(masterPtr->tkwin);
|
729 |
if (slavePtr->borderMode == BM_INSIDE) {
|
730 |
masterBW = Tk_InternalBorderWidth(masterPtr->tkwin);
|
731 |
} else if (slavePtr->borderMode == BM_OUTSIDE) {
|
732 |
masterBW = -Tk_Changes(masterPtr->tkwin)->border_width;
|
733 |
}
|
734 |
masterWidth -= 2*masterBW;
|
735 |
masterHeight -= 2*masterBW;
|
736 |
|
737 |
/*
|
738 |
* Step 2: compute size of slave (outside dimensions including
|
739 |
* border) and location of anchor point within master.
|
740 |
*/
|
741 |
|
742 |
x1 = slavePtr->x + masterBW + (slavePtr->relX*masterWidth);
|
743 |
x = (int) (x1 + ((x1 > 0) ? 0.5 : -0.5));
|
744 |
y1 = slavePtr->y + masterBW + (slavePtr->relY*masterHeight);
|
745 |
y = (int) (y1 + ((y1 > 0) ? 0.5 : -0.5));
|
746 |
if (slavePtr->flags & (CHILD_WIDTH|CHILD_REL_WIDTH)) {
|
747 |
width = 0;
|
748 |
if (slavePtr->flags & CHILD_WIDTH) {
|
749 |
width += slavePtr->width;
|
750 |
}
|
751 |
if (slavePtr->flags & CHILD_REL_WIDTH) {
|
752 |
/*
|
753 |
* The code below is a bit tricky. In order to round
|
754 |
* correctly when both relX and relWidth are specified,
|
755 |
* compute the location of the right edge and round that,
|
756 |
* then compute width. If we compute the width and round
|
757 |
* it, rounding errors in relX and relWidth accumulate.
|
758 |
*/
|
759 |
|
760 |
x2 = x1 + (slavePtr->relWidth*masterWidth);
|
761 |
tmp = (int) (x2 + ((x2 > 0) ? 0.5 : -0.5));
|
762 |
width += tmp - x;
|
763 |
}
|
764 |
} else {
|
765 |
width = Tk_ReqWidth(slavePtr->tkwin)
|
766 |
+ 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
767 |
}
|
768 |
if (slavePtr->flags & (CHILD_HEIGHT|CHILD_REL_HEIGHT)) {
|
769 |
height = 0;
|
770 |
if (slavePtr->flags & CHILD_HEIGHT) {
|
771 |
height += slavePtr->height;
|
772 |
}
|
773 |
if (slavePtr->flags & CHILD_REL_HEIGHT) {
|
774 |
/*
|
775 |
* See note above for rounding errors in width computation.
|
776 |
*/
|
777 |
|
778 |
y2 = y1 + (slavePtr->relHeight*masterHeight);
|
779 |
tmp = (int) (y2 + ((y2 > 0) ? 0.5 : -0.5));
|
780 |
height += tmp - y;
|
781 |
}
|
782 |
} else {
|
783 |
height = Tk_ReqHeight(slavePtr->tkwin)
|
784 |
+ 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
785 |
}
|
786 |
|
787 |
/*
|
788 |
* Step 3: adjust the x and y positions so that the desired
|
789 |
* anchor point on the slave appears at that position. Also
|
790 |
* adjust for the border mode and master's border.
|
791 |
*/
|
792 |
|
793 |
switch (slavePtr->anchor) {
|
794 |
case TK_ANCHOR_N:
|
795 |
x -= width/2;
|
796 |
break;
|
797 |
case TK_ANCHOR_NE:
|
798 |
x -= width;
|
799 |
break;
|
800 |
case TK_ANCHOR_E:
|
801 |
x -= width;
|
802 |
y -= height/2;
|
803 |
break;
|
804 |
case TK_ANCHOR_SE:
|
805 |
x -= width;
|
806 |
y -= height;
|
807 |
break;
|
808 |
case TK_ANCHOR_S:
|
809 |
x -= width/2;
|
810 |
y -= height;
|
811 |
break;
|
812 |
case TK_ANCHOR_SW:
|
813 |
y -= height;
|
814 |
break;
|
815 |
case TK_ANCHOR_W:
|
816 |
y -= height/2;
|
817 |
break;
|
818 |
case TK_ANCHOR_NW:
|
819 |
break;
|
820 |
case TK_ANCHOR_CENTER:
|
821 |
x -= width/2;
|
822 |
y -= height/2;
|
823 |
break;
|
824 |
}
|
825 |
|
826 |
/*
|
827 |
* Step 4: adjust width and height again to reflect inside dimensions
|
828 |
* of window rather than outside. Also make sure that the width and
|
829 |
* height aren't zero.
|
830 |
*/
|
831 |
|
832 |
width -= 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
833 |
height -= 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
834 |
if (width <= 0) {
|
835 |
width = 1;
|
836 |
}
|
837 |
if (height <= 0) {
|
838 |
height = 1;
|
839 |
}
|
840 |
|
841 |
/*
|
842 |
* Step 5: reconfigure the window and map it if needed. If the
|
843 |
* slave is a child of the master, we do this ourselves. If the
|
844 |
* slave isn't a child of the master, let Tk_MaintainGeometry do
|
845 |
* the work (it will re-adjust things as relevant windows map,
|
846 |
* unmap, and move).
|
847 |
*/
|
848 |
|
849 |
if (masterPtr->tkwin == Tk_Parent(slavePtr->tkwin)) {
|
850 |
if ((x != Tk_X(slavePtr->tkwin))
|
851 |
|| (y != Tk_Y(slavePtr->tkwin))
|
852 |
|| (width != Tk_Width(slavePtr->tkwin))
|
853 |
|| (height != Tk_Height(slavePtr->tkwin))) {
|
854 |
Tk_MoveResizeWindow(slavePtr->tkwin, x, y, width, height);
|
855 |
}
|
856 |
|
857 |
/*
|
858 |
* Don't map the slave unless the master is mapped: the slave
|
859 |
* will get mapped later, when the master is mapped.
|
860 |
*/
|
861 |
|
862 |
if (Tk_IsMapped(masterPtr->tkwin)) {
|
863 |
Tk_MapWindow(slavePtr->tkwin);
|
864 |
}
|
865 |
} else {
|
866 |
if ((width <= 0) || (height <= 0)) {
|
867 |
Tk_UnmaintainGeometry(slavePtr->tkwin, masterPtr->tkwin);
|
868 |
Tk_UnmapWindow(slavePtr->tkwin);
|
869 |
} else {
|
870 |
Tk_MaintainGeometry(slavePtr->tkwin, masterPtr->tkwin,
|
871 |
x, y, width, height);
|
872 |
}
|
873 |
}
|
874 |
}
|
875 |
}
|
876 |
|
877 |
/*
|
878 |
*----------------------------------------------------------------------
|
879 |
*
|
880 |
* MasterStructureProc --
|
881 |
*
|
882 |
* This procedure is invoked by the Tk event handler when
|
883 |
* StructureNotify events occur for a master window.
|
884 |
*
|
885 |
* Results:
|
886 |
* None.
|
887 |
*
|
888 |
* Side effects:
|
889 |
* Structures get cleaned up if the window was deleted. If the
|
890 |
* window was resized then slave geometries get recomputed.
|
891 |
*
|
892 |
*----------------------------------------------------------------------
|
893 |
*/
|
894 |
|
895 |
static void
|
896 |
MasterStructureProc(clientData, eventPtr)
|
897 |
ClientData clientData; /* Pointer to Master structure for window
|
898 |
* referred to by eventPtr. */
|
899 |
XEvent *eventPtr; /* Describes what just happened. */
|
900 |
{
|
901 |
register Master *masterPtr = (Master *) clientData;
|
902 |
register Slave *slavePtr, *nextPtr;
|
903 |
TkDisplay *dispPtr = ((TkWindow *) masterPtr->tkwin)->dispPtr;
|
904 |
|
905 |
if (eventPtr->type == ConfigureNotify) {
|
906 |
if ((masterPtr->slavePtr != NULL)
|
907 |
&& !(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
908 |
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
909 |
Tcl_DoWhenIdle(RecomputePlacement, (ClientData) masterPtr);
|
910 |
}
|
911 |
} else if (eventPtr->type == DestroyNotify) {
|
912 |
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
|
913 |
slavePtr = nextPtr) {
|
914 |
slavePtr->masterPtr = NULL;
|
915 |
nextPtr = slavePtr->nextPtr;
|
916 |
slavePtr->nextPtr = NULL;
|
917 |
}
|
918 |
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->masterTable,
|
919 |
(char *) masterPtr->tkwin));
|
920 |
if (masterPtr->flags & PARENT_RECONFIG_PENDING) {
|
921 |
Tcl_CancelIdleCall(RecomputePlacement, (ClientData) masterPtr);
|
922 |
}
|
923 |
masterPtr->tkwin = NULL;
|
924 |
ckfree((char *) masterPtr);
|
925 |
} else if (eventPtr->type == MapNotify) {
|
926 |
/*
|
927 |
* When a master gets mapped, must redo the geometry computation
|
928 |
* so that all of its slaves get remapped.
|
929 |
*/
|
930 |
|
931 |
if ((masterPtr->slavePtr != NULL)
|
932 |
&& !(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
933 |
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
934 |
Tcl_DoWhenIdle(RecomputePlacement, (ClientData) masterPtr);
|
935 |
}
|
936 |
} else if (eventPtr->type == UnmapNotify) {
|
937 |
/*
|
938 |
* Unmap all of the slaves when the master gets unmapped,
|
939 |
* so that they don't keep redisplaying themselves.
|
940 |
*/
|
941 |
|
942 |
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
|
943 |
slavePtr = slavePtr->nextPtr) {
|
944 |
Tk_UnmapWindow(slavePtr->tkwin);
|
945 |
}
|
946 |
}
|
947 |
}
|
948 |
|
949 |
/*
|
950 |
*----------------------------------------------------------------------
|
951 |
*
|
952 |
* SlaveStructureProc --
|
953 |
*
|
954 |
* This procedure is invoked by the Tk event handler when
|
955 |
* StructureNotify events occur for a slave window.
|
956 |
*
|
957 |
* Results:
|
958 |
* None.
|
959 |
*
|
960 |
* Side effects:
|
961 |
* Structures get cleaned up if the window was deleted.
|
962 |
*
|
963 |
*----------------------------------------------------------------------
|
964 |
*/
|
965 |
|
966 |
static void
|
967 |
SlaveStructureProc(clientData, eventPtr)
|
968 |
ClientData clientData; /* Pointer to Slave structure for window
|
969 |
* referred to by eventPtr. */
|
970 |
XEvent *eventPtr; /* Describes what just happened. */
|
971 |
{
|
972 |
register Slave *slavePtr = (Slave *) clientData;
|
973 |
TkDisplay * dispPtr = ((TkWindow *) slavePtr->tkwin)->dispPtr;
|
974 |
|
975 |
if (eventPtr->type == DestroyNotify) {
|
976 |
UnlinkSlave(slavePtr);
|
977 |
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->slaveTable,
|
978 |
(char *) slavePtr->tkwin));
|
979 |
ckfree((char *) slavePtr);
|
980 |
}
|
981 |
}
|
982 |
|
983 |
/*
|
984 |
*----------------------------------------------------------------------
|
985 |
*
|
986 |
* PlaceRequestProc --
|
987 |
*
|
988 |
* This procedure is invoked by Tk whenever a slave managed by us
|
989 |
* changes its requested geometry.
|
990 |
*
|
991 |
* Results:
|
992 |
* None.
|
993 |
*
|
994 |
* Side effects:
|
995 |
* The window will get relayed out, if its requested size has
|
996 |
* anything to do with its actual size.
|
997 |
*
|
998 |
*----------------------------------------------------------------------
|
999 |
*/
|
1000 |
|
1001 |
/* ARGSUSED */
|
1002 |
static void
|
1003 |
PlaceRequestProc(clientData, tkwin)
|
1004 |
ClientData clientData; /* Pointer to our record for slave. */
|
1005 |
Tk_Window tkwin; /* Window that changed its desired
|
1006 |
* size. */
|
1007 |
{
|
1008 |
Slave *slavePtr = (Slave *) clientData;
|
1009 |
Master *masterPtr;
|
1010 |
|
1011 |
if (((slavePtr->flags & (CHILD_WIDTH|CHILD_REL_WIDTH)) != 0)
|
1012 |
&& ((slavePtr->flags & (CHILD_HEIGHT|CHILD_REL_HEIGHT)) != 0)) {
|
1013 |
return;
|
1014 |
}
|
1015 |
masterPtr = slavePtr->masterPtr;
|
1016 |
if (masterPtr == NULL) {
|
1017 |
return;
|
1018 |
}
|
1019 |
if (!(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
1020 |
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
1021 |
Tcl_DoWhenIdle(RecomputePlacement, (ClientData) masterPtr);
|
1022 |
}
|
1023 |
}
|
1024 |
|
1025 |
/*
|
1026 |
*--------------------------------------------------------------
|
1027 |
*
|
1028 |
* PlaceLostSlaveProc --
|
1029 |
*
|
1030 |
* This procedure is invoked by Tk whenever some other geometry
|
1031 |
* claims control over a slave that used to be managed by us.
|
1032 |
*
|
1033 |
* Results:
|
1034 |
* None.
|
1035 |
*
|
1036 |
* Side effects:
|
1037 |
* Forgets all placer-related information about the slave.
|
1038 |
*
|
1039 |
*--------------------------------------------------------------
|
1040 |
*/
|
1041 |
|
1042 |
/* ARGSUSED */
|
1043 |
static void
|
1044 |
PlaceLostSlaveProc(clientData, tkwin)
|
1045 |
ClientData clientData; /* Slave structure for slave window that
|
1046 |
* was stolen away. */
|
1047 |
Tk_Window tkwin; /* Tk's handle for the slave window. */
|
1048 |
{
|
1049 |
register Slave *slavePtr = (Slave *) clientData;
|
1050 |
TkDisplay * dispPtr = ((TkWindow *) slavePtr->tkwin)->dispPtr;
|
1051 |
|
1052 |
if (slavePtr->masterPtr->tkwin != Tk_Parent(slavePtr->tkwin)) {
|
1053 |
Tk_UnmaintainGeometry(slavePtr->tkwin, slavePtr->masterPtr->tkwin);
|
1054 |
}
|
1055 |
Tk_UnmapWindow(tkwin);
|
1056 |
UnlinkSlave(slavePtr);
|
1057 |
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->slaveTable,
|
1058 |
(char *) tkwin));
|
1059 |
Tk_DeleteEventHandler(tkwin, StructureNotifyMask, SlaveStructureProc,
|
1060 |
(ClientData) slavePtr);
|
1061 |
ckfree((char *) slavePtr);
|
1062 |
}
|
1063 |
|
1064 |
|
1065 |
/* $History: tkPlace.c $
|
1066 |
*
|
1067 |
* ***************** Version 1 *****************
|
1068 |
* User: Dtashley Date: 1/02/01 Time: 3:04a
|
1069 |
* Created in $/IjuScripter, IjuConsole/Source/Tk Base
|
1070 |
* Initial check-in.
|
1071 |
*/
|
1072 |
|
1073 |
/* End of TKPLACE.C */ |