957 lines
28 KiB
C
957 lines
28 KiB
C
/*
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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) 1992-1993 The Regents of the University of California.
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#ifndef lint
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static char rcsid[] = "$Header: /user6/ouster/wish/RCS/tkPlace.c,v 1.10 93/06/16 17:16:24 ouster Exp $ SPRITE (Berkeley)";
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#endif /* not lint */
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#include "tkConfig.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_REL_X - 1 means use relX field; 0 means use x.
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* CHILD_REL_Y - 1 means use relY field; 0 means use y;
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* CHILD_WIDTH - 1 means use width field;
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* CHILD_REL_WIDTH - 1 means use relWidth; if neither this nor
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* CHILD_WIDTH is 1, use window's requested
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* width.
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* CHILD_HEIGHT - 1 means use height field;
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* CHILD_REL_HEIGHT - 1 means use relHeight; if neither this nor
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* CHILD_HEIGHT is 1, use window's requested
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* height.
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*/
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#define CHILD_REL_X 1
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#define CHILD_REL_Y 2
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#define CHILD_WIDTH 4
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#define CHILD_REL_WIDTH 8
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#define CHILD_HEIGHT 0x10
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#define CHILD_REL_HEIGHT 0x20
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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 hash tables below both use Tk_Window tokens as keys. They map
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* from Tk_Windows to Slave and Master structures for windows, if they
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* exist.
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*/
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static int initialized = 0;
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static Tcl_HashTable masterTable;
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static Tcl_HashTable slaveTable;
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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 PlaceRequestProc _ANSI_ARGS_((ClientData clientData,
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Tk_Window tkwin));
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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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int length;
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char c;
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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 (!initialized) {
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Tcl_InitHashTable(&masterTable, TCL_ONE_WORD_KEYS);
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Tcl_InitHashTable(&slaveTable, TCL_ONE_WORD_KEYS);
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initialized = 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(&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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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_GeometryProc *) 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[50];
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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(&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->flags & CHILD_REL_X) {
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sprintf(buffer, "-relx %.4g", slavePtr->relX);
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} else {
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sprintf(buffer, "-x %d", slavePtr->x);
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}
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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if (slavePtr->flags & CHILD_REL_Y) {
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sprintf(buffer, " -rely %.4g", slavePtr->relY);
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} else {
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sprintf(buffer, " -y %d", slavePtr->y);
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}
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Tcl_AppendResult(interp, buffer, (char *) NULL);
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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 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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}
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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 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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}
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Tcl_AppendResult(interp, " -anchor ", Tk_NameOfAnchor(slavePtr->anchor),
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(char *) NULL);
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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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}
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if ((slavePtr->masterPtr != NULL)
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&& (slavePtr->masterPtr->tkwin != Tk_Parent(slavePtr->tkwin))) {
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Tcl_AppendResult(interp, " -in ",
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Tk_PathName(slavePtr->masterPtr->tkwin), (char *) NULL);
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}
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} else if ((c == 's') && (strncmp(argv[1], "slaves", 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], " slaves pathName\"", (char *) NULL);
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return TCL_ERROR;
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}
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hPtr = Tcl_FindHashEntry(&masterTable, (char *) tkwin);
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if (hPtr != NULL) {
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Master *masterPtr;
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masterPtr = (Master *) Tcl_GetHashValue(hPtr);
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for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
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slavePtr = slavePtr->nextPtr) {
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Tcl_AppendElement(interp, Tk_PathName(slavePtr->tkwin));
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}
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}
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} else {
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Tcl_AppendResult(interp, "unknown or ambiguous option \"", argv[1],
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"\": must be configure, forget, info, or slaves",
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(char *) NULL);
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return TCL_ERROR;
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}
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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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* FindSlave --
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*
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* Given a Tk_Window token, find the Slave structure corresponding
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* to that token (making a new one if necessary).
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*
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* Results:
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* None.
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*
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* Side effects:
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* A new Slave structure may be created.
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*
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*----------------------------------------------------------------------
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*/
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static Slave *
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FindSlave(tkwin)
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Tk_Window tkwin; /* Token for desired slave. */
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{
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Tcl_HashEntry *hPtr;
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register Slave *slavePtr;
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int new;
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hPtr = Tcl_CreateHashEntry(&slaveTable, (char *) tkwin, &new);
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if (new) {
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slavePtr = (Slave *) ckalloc(sizeof(Slave));
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slavePtr->tkwin = tkwin;
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slavePtr->masterPtr = NULL;
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slavePtr->nextPtr = NULL;
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slavePtr->x = slavePtr->y = 0;
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slavePtr->relX = slavePtr->relY = 0.0;
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slavePtr->width = slavePtr->height = 0;
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slavePtr->relWidth = slavePtr->relHeight = 0.0;
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slavePtr->anchor = TK_ANCHOR_NW;
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slavePtr->borderMode = BM_INSIDE;
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slavePtr->flags = 0;
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Tcl_SetHashValue(hPtr, slavePtr);
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Tk_CreateEventHandler(tkwin, StructureNotifyMask, SlaveStructureProc,
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(ClientData) slavePtr);
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Tk_ManageGeometry(tkwin, PlaceRequestProc, (ClientData) slavePtr);
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} else {
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slavePtr = (Slave *) Tcl_GetHashValue(hPtr);
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}
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return slavePtr;
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}
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/*
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*----------------------------------------------------------------------
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*
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* UnlinkSlave --
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*
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* This procedure removes a slave window from the chain of slaves
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* in its master.
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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 slave list of slavePtr's master changes.
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*
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*----------------------------------------------------------------------
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*/
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static void
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UnlinkSlave(slavePtr)
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Slave *slavePtr; /* Slave structure to be unlinked. */
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{
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register Master *masterPtr;
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register Slave *prevPtr;
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masterPtr = slavePtr->masterPtr;
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if (masterPtr == NULL) {
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return;
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}
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if (masterPtr->slavePtr == slavePtr) {
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masterPtr->slavePtr = slavePtr->nextPtr;
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} else {
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for (prevPtr = masterPtr->slavePtr; ;
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prevPtr = prevPtr->nextPtr) {
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if (prevPtr == NULL) {
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panic("UnlinkSlave couldn't find slave to unlink");
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}
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if (prevPtr->nextPtr == slavePtr) {
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prevPtr->nextPtr = slavePtr->nextPtr;
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break;
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}
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}
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}
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slavePtr->masterPtr = NULL;
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}
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/*
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*----------------------------------------------------------------------
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*
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* FindMaster --
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*
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* Given a Tk_Window token, find the Master structure corresponding
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* to that token (making a new one if necessary).
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*
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* Results:
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* None.
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*
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* Side effects:
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* A new Master structure may be created.
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*
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*----------------------------------------------------------------------
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*/
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static Master *
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FindMaster(tkwin)
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Tk_Window tkwin; /* Token for desired master. */
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{
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Tcl_HashEntry *hPtr;
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register Master *masterPtr;
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int new;
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hPtr = Tcl_CreateHashEntry(&masterTable, (char *) tkwin, &new);
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if (new) {
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masterPtr = (Master *) ckalloc(sizeof(Master));
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masterPtr->tkwin = tkwin;
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masterPtr->slavePtr = NULL;
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masterPtr->flags = 0;
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Tcl_SetHashValue(hPtr, masterPtr);
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Tk_CreateEventHandler(masterPtr->tkwin, StructureNotifyMask,
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MasterStructureProc, (ClientData) masterPtr);
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} else {
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masterPtr = (Master *) Tcl_GetHashValue(hPtr);
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}
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return masterPtr;
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}
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/*
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*----------------------------------------------------------------------
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*
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* ConfigureSlave --
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*
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* This procedure is called to process an argv/argc list to
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* reconfigure the placement of a window.
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*
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* Results:
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* A standard Tcl result. If an error occurs then a message is
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* left in interp->result.
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*
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* Side effects:
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* Information in slavePtr may change, and slavePtr's master is
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* scheduled for reconfiguration.
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*
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*----------------------------------------------------------------------
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*/
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static int
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ConfigureSlave(interp, slavePtr, argc, argv)
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Tcl_Interp *interp; /* Used for error reporting. */
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Slave *slavePtr; /* Pointer to current information
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* about slave. */
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int argc; /* Number of config arguments. */
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char **argv; /* String values for arguments. */
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{
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register Master *masterPtr;
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int c, length, result;
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double d;
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result = TCL_OK;
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if (Tk_IsTopLevel(slavePtr->tkwin)) {
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Tcl_AppendResult(interp, "can't use placer on top-level window \"",
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Tk_PathName(slavePtr->tkwin), "\"; use wm command instead",
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(char *) NULL);
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return TCL_ERROR;
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}
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for ( ; argc > 0; argc -= 2, argv += 2) {
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if (argc < 2) {
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Tcl_AppendResult(interp, "extra option \"", argv[0],
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"\" (option with no value?)", (char *) NULL);
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result = TCL_ERROR;
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goto done;
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}
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length = strlen(argv[0]);
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c = argv[0][1];
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if ((c == 'a') && (strncmp(argv[0], "-anchor", length) == 0)) {
|
||
if (Tk_GetAnchor(interp, argv[1], &slavePtr->anchor) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
} else if ((c == 'b')
|
||
&& (strncmp(argv[0], "-bordermode", length) == 0)) {
|
||
c = argv[1][0];
|
||
length = strlen(argv[1]);
|
||
if ((c == 'i') && (strncmp(argv[1], "ignore", length) == 0)
|
||
&& (length >= 2)) {
|
||
slavePtr->borderMode = BM_IGNORE;
|
||
} else if ((c == 'i') && (strncmp(argv[1], "inside", length) == 0)
|
||
&& (length >= 2)) {
|
||
slavePtr->borderMode = BM_INSIDE;
|
||
} else if ((c == 'o')
|
||
&& (strncmp(argv[1], "outside", length) == 0)) {
|
||
slavePtr->borderMode = BM_OUTSIDE;
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad border mode \"", argv[1],
|
||
"\": must be ignore, inside, or outside",
|
||
(char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
} else if ((c == 'h') && (strncmp(argv[0], "-height", length) == 0)) {
|
||
if (argv[1][0] == 0) {
|
||
slavePtr->flags &= ~(CHILD_REL_HEIGHT|CHILD_HEIGHT);
|
||
} else {
|
||
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
||
&slavePtr->height) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->flags &= ~CHILD_REL_HEIGHT;
|
||
slavePtr->flags |= CHILD_HEIGHT;
|
||
}
|
||
} else if ((c == 'i') && (strncmp(argv[0], "-in", length) == 0)) {
|
||
Tk_Window tkwin;
|
||
Tk_Window ancestor;
|
||
|
||
tkwin = Tk_NameToWindow(interp, argv[1], slavePtr->tkwin);
|
||
if (tkwin == NULL) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
|
||
/*
|
||
* Make sure that the new master is either the logical parent
|
||
* of the slave or a descendant of that window.
|
||
*/
|
||
|
||
for (ancestor = tkwin; ; ancestor = Tk_Parent(ancestor)) {
|
||
if (ancestor == Tk_Parent(slavePtr->tkwin)) {
|
||
break;
|
||
}
|
||
if (Tk_IsTopLevel(ancestor)) {
|
||
Tcl_AppendResult(interp, "can't place ",
|
||
Tk_PathName(slavePtr->tkwin), " relative to ",
|
||
Tk_PathName(tkwin), (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
}
|
||
UnlinkSlave(slavePtr);
|
||
slavePtr->masterPtr = FindMaster(tkwin);
|
||
slavePtr->nextPtr = slavePtr->masterPtr->slavePtr;
|
||
slavePtr->masterPtr->slavePtr = slavePtr;
|
||
} else if ((c == 'r') && (strncmp(argv[0], "-relheight", length) == 0)
|
||
&& (length >= 5)) {
|
||
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->relHeight = d;
|
||
slavePtr->flags |= CHILD_REL_HEIGHT;
|
||
slavePtr->flags &= ~CHILD_HEIGHT;
|
||
} else if ((c == 'r') && (strncmp(argv[0], "-relwidth", length) == 0)
|
||
&& (length >= 5)) {
|
||
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->relWidth = d;
|
||
slavePtr->flags |= CHILD_REL_WIDTH;
|
||
slavePtr->flags &= ~CHILD_WIDTH;
|
||
} else if ((c == 'r') && (strncmp(argv[0], "-relx", length) == 0)
|
||
&& (length >= 5)) {
|
||
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->relX = d;
|
||
slavePtr->flags |= CHILD_REL_X;
|
||
} else if ((c == 'r') && (strncmp(argv[0], "-rely", length) == 0)
|
||
&& (length >= 5)) {
|
||
if (Tcl_GetDouble(interp, argv[1], &d) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->relY = d;
|
||
slavePtr->flags |= CHILD_REL_Y;
|
||
} else if ((c == 'w') && (strncmp(argv[0], "-width", length) == 0)) {
|
||
if (argv[1][0] == 0) {
|
||
slavePtr->flags &= ~(CHILD_REL_WIDTH|CHILD_WIDTH);
|
||
} else {
|
||
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
||
&slavePtr->width) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->flags &= ~CHILD_REL_WIDTH;
|
||
slavePtr->flags |= CHILD_WIDTH;
|
||
}
|
||
} else if ((c == 'x') && (strncmp(argv[0], "-x", length) == 0)) {
|
||
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
||
&slavePtr->x) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->flags &= ~CHILD_REL_X;
|
||
} else if ((c == 'y') && (strncmp(argv[0], "-y", length) == 0)) {
|
||
if (Tk_GetPixels(interp, slavePtr->tkwin, argv[1],
|
||
&slavePtr->y) != TCL_OK) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
slavePtr->flags &= ~CHILD_REL_Y;
|
||
} else {
|
||
Tcl_AppendResult(interp, "unknown or ambiguous option \"",
|
||
argv[0], "\": must be -anchor, -bordermode, -height, ",
|
||
"-in, -relheight, -relwidth, -relx, -rely, -width, ",
|
||
"-x, or -y", (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* If there's no master specified for this slave, use its Tk_Parent.
|
||
* Then arrange for a placement recalculation in the master.
|
||
*/
|
||
|
||
done:
|
||
masterPtr = slavePtr->masterPtr;
|
||
if (masterPtr == NULL) {
|
||
masterPtr = FindMaster(Tk_Parent(slavePtr->tkwin));
|
||
slavePtr->masterPtr = masterPtr;
|
||
slavePtr->nextPtr = masterPtr->slavePtr;
|
||
masterPtr->slavePtr = slavePtr;
|
||
}
|
||
if (!(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
||
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
||
Tk_DoWhenIdle(RecomputePlacement, (ClientData) masterPtr);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* RecomputePlacement --
|
||
*
|
||
* This procedure is called as a when-idle handler. It recomputes
|
||
* the geometries of all the slaves of a given master.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Windows may change size or shape.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
RecomputePlacement(clientData)
|
||
ClientData clientData; /* Pointer to Master record. */
|
||
{
|
||
register Master *masterPtr = (Master *) clientData;
|
||
register Slave *slavePtr;
|
||
Tk_Window ancestor, realMaster;
|
||
int x, y, width, height;
|
||
int masterWidth, masterHeight, masterBW;
|
||
|
||
masterPtr->flags &= ~PARENT_RECONFIG_PENDING;
|
||
|
||
/*
|
||
* Iterate over all the slaves for the master. Each slave's
|
||
* geometry can be computed independently of the other slaves.
|
||
*/
|
||
|
||
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
|
||
slavePtr = slavePtr->nextPtr) {
|
||
/*
|
||
* Step 1: compute size and borderwidth of master, taking into
|
||
* account desired border mode.
|
||
*/
|
||
|
||
masterBW = 0;
|
||
masterWidth = Tk_Width(masterPtr->tkwin);
|
||
masterHeight = Tk_Height(masterPtr->tkwin);
|
||
if (slavePtr->borderMode == BM_INSIDE) {
|
||
masterBW = Tk_InternalBorderWidth(masterPtr->tkwin);
|
||
} else if (slavePtr->borderMode == BM_OUTSIDE) {
|
||
masterBW = -Tk_Changes(masterPtr->tkwin)->border_width;
|
||
}
|
||
masterWidth -= 2*masterBW;
|
||
masterHeight -= 2*masterBW;
|
||
|
||
/*
|
||
* Step 2: compute size of slave (outside dimensions including
|
||
* border) and location of anchor point within master.
|
||
*/
|
||
|
||
x = slavePtr->x;
|
||
if (slavePtr->flags & CHILD_REL_X) {
|
||
x = (slavePtr->relX*masterWidth) +
|
||
((slavePtr->relX > 0) ? 0.5 : -0.5);
|
||
}
|
||
x += masterBW;
|
||
y = slavePtr->y;
|
||
if (slavePtr->flags & CHILD_REL_Y) {
|
||
y = (slavePtr->relY*masterHeight) +
|
||
((slavePtr->relY > 0) ? 0.5 : -0.5);
|
||
}
|
||
y += masterBW;
|
||
if (slavePtr->flags & CHILD_REL_WIDTH) {
|
||
width = (slavePtr->relWidth*masterWidth) + 0.5;
|
||
} else if (slavePtr->flags & CHILD_WIDTH) {
|
||
width = slavePtr->width;
|
||
} else {
|
||
width = Tk_ReqWidth(slavePtr->tkwin)
|
||
+ 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
||
}
|
||
if (slavePtr->flags & CHILD_REL_HEIGHT) {
|
||
height = (slavePtr->relHeight*masterHeight) + 0.5;
|
||
} else if (slavePtr->flags & CHILD_HEIGHT) {
|
||
height = slavePtr->height;
|
||
} else {
|
||
height = Tk_ReqHeight(slavePtr->tkwin)
|
||
+ 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
||
}
|
||
|
||
/*
|
||
* Step 3: adjust the x and y positions so that the desired
|
||
* anchor point on the slave appears at that position. Also
|
||
* adjust for the border mode and master's border.
|
||
*/
|
||
|
||
switch (slavePtr->anchor) {
|
||
case TK_ANCHOR_N:
|
||
x -= width/2;
|
||
break;
|
||
case TK_ANCHOR_NE:
|
||
x -= width;
|
||
break;
|
||
case TK_ANCHOR_E:
|
||
x -= width;
|
||
y -= height/2;
|
||
break;
|
||
case TK_ANCHOR_SE:
|
||
x -= width;
|
||
y -= height;
|
||
break;
|
||
case TK_ANCHOR_S:
|
||
x -= width/2;
|
||
y -= height;
|
||
break;
|
||
case TK_ANCHOR_SW:
|
||
y -= height;
|
||
break;
|
||
case TK_ANCHOR_W:
|
||
y -= height/2;
|
||
break;
|
||
case TK_ANCHOR_NW:
|
||
break;
|
||
case TK_ANCHOR_CENTER:
|
||
x -= width/2;
|
||
y -= height/2;
|
||
break;
|
||
}
|
||
|
||
/*
|
||
* Step 4: if masterPtr isn't actually the X master of slavePtr,
|
||
* then translate the x and y coordinates back into the coordinate
|
||
* system of masterPtr.
|
||
*/
|
||
|
||
for (ancestor = masterPtr->tkwin,
|
||
realMaster = Tk_Parent(slavePtr->tkwin);
|
||
ancestor != realMaster; ancestor = Tk_Parent(ancestor)) {
|
||
x += Tk_X(ancestor) + Tk_Changes(ancestor)->border_width;
|
||
y += Tk_Y(ancestor) + Tk_Changes(ancestor)->border_width;
|
||
}
|
||
|
||
/*
|
||
* Step 5: adjust width and height again to reflect inside dimensions
|
||
* of window rather than outside. Also make sure that the width and
|
||
* height aren't zero.
|
||
*/
|
||
|
||
width -= 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
||
height -= 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
||
if (width <= 0) {
|
||
width = 1;
|
||
}
|
||
if (height <= 0) {
|
||
height = 1;
|
||
}
|
||
|
||
/*
|
||
* Step 6: see if the window's size or location has changed; if
|
||
* so then tell X to reconfigure it.
|
||
*/
|
||
|
||
if ((x != Tk_X(slavePtr->tkwin))
|
||
|| (y != Tk_Y(slavePtr->tkwin))
|
||
|| (width != Tk_Width(slavePtr->tkwin))
|
||
|| (height != Tk_Height(slavePtr->tkwin))) {
|
||
Tk_MoveResizeWindow(slavePtr->tkwin, x, y,
|
||
(unsigned int) width, (unsigned int) height);
|
||
}
|
||
Tk_MapWindow(slavePtr->tkwin);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* MasterStructureProc --
|
||
*
|
||
* This procedure is invoked by the Tk event handler when
|
||
* StructureNotify events occur for a master window.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Structures get cleaned up if the window was deleted. If the
|
||
* window was resized then slave geometries get recomputed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
MasterStructureProc(clientData, eventPtr)
|
||
ClientData clientData; /* Pointer to Master structure for window
|
||
* referred to by eventPtr. */
|
||
XEvent *eventPtr; /* Describes what just happened. */
|
||
{
|
||
register Master *masterPtr = (Master *) clientData;
|
||
register Slave *slavePtr, *nextPtr;
|
||
|
||
if (eventPtr->type == ConfigureNotify) {
|
||
if ((masterPtr->slavePtr != NULL)
|
||
&& !(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
||
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
||
Tk_DoWhenIdle(RecomputePlacement, (ClientData) masterPtr);
|
||
}
|
||
} else if (eventPtr->type == DestroyNotify) {
|
||
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
|
||
slavePtr = nextPtr) {
|
||
slavePtr->masterPtr = NULL;
|
||
nextPtr = slavePtr->nextPtr;
|
||
slavePtr->nextPtr = NULL;
|
||
}
|
||
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&masterTable,
|
||
(char *) masterPtr->tkwin));
|
||
if (masterPtr->flags & PARENT_RECONFIG_PENDING) {
|
||
Tk_CancelIdleCall(RecomputePlacement, (ClientData) masterPtr);
|
||
}
|
||
masterPtr->tkwin = NULL;
|
||
ckfree((char *) masterPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* SlaveStructureProc --
|
||
*
|
||
* This procedure is invoked by the Tk event handler when
|
||
* StructureNotify events occur for a slave window.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Structures get cleaned up if the window was deleted.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
SlaveStructureProc(clientData, eventPtr)
|
||
ClientData clientData; /* Pointer to Slave structure for window
|
||
* referred to by eventPtr. */
|
||
XEvent *eventPtr; /* Describes what just happened. */
|
||
{
|
||
register Slave *slavePtr = (Slave *) clientData;
|
||
|
||
if (eventPtr->type == DestroyNotify) {
|
||
UnlinkSlave(slavePtr);
|
||
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&slaveTable,
|
||
(char *) slavePtr->tkwin));
|
||
ckfree((char *) slavePtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* PlaceRequestProc --
|
||
*
|
||
* This procedure is invoked by Tk whenever a slave managed by us
|
||
* changes its requested geometry.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The window will get relayed out, if its requested size has
|
||
* anything to do with its actual size.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
PlaceRequestProc(clientData, tkwin)
|
||
ClientData clientData; /* Pointer to our record for slave. */
|
||
Tk_Window tkwin; /* Window that changed its desired
|
||
* size. */
|
||
{
|
||
Slave *slavePtr = (Slave *) clientData;
|
||
Master *masterPtr;
|
||
|
||
if (((slavePtr->flags & (CHILD_WIDTH|CHILD_REL_WIDTH)) != 0)
|
||
&& ((slavePtr->flags & (CHILD_HEIGHT|CHILD_REL_HEIGHT)) != 0)) {
|
||
return;
|
||
}
|
||
masterPtr = slavePtr->masterPtr;
|
||
if (masterPtr == NULL) {
|
||
return;
|
||
}
|
||
if (!(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
||
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
||
Tk_DoWhenIdle(RecomputePlacement, (ClientData) masterPtr);
|
||
}
|
||
}
|