1246 lines
34 KiB
C
1246 lines
34 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 for Tk
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* 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 of
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*/
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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 all
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* borders of master window.
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* BM_OUTSIDE: relative distances computed using outside area that
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* includes all borders of master.
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* BM_IGNORE: border issues are ignored: place relative to master's
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* actual window size.
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*/
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static const char *const borderModeStrings[] = {
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"inside", "outside", "ignore", NULL
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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 a
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* 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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Tk_Window inTkwin; /* Token for the -in window. */
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struct Master *masterPtr; /* Pointer to information for window relative
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* to which tkwin is placed. This isn't
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* necessarily the logical parent of tkwin.
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* NULL means the master was deleted or never
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* assigned. */
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struct Slave *nextPtr; /* Next in list of windows placed relative to
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* same master (NULL for end of list). */
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Tk_OptionTable optionTable; /* Table that defines configuration options
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* available for this command. */
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/*
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* Geometry information for window; where there are both relative and
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* absolute values for the same attribute (e.g. x and relX) only one of
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* 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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Tcl_Obj *xPtr, *yPtr; /* Tcl_Obj rep's of x, y coords, to keep pixel
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* spec. information. */
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double 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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Tcl_Obj *widthPtr; /* Tcl_Obj rep of width, to keep pixel
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* spec. */
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Tcl_Obj *heightPtr; /* Tcl_Obj rep of height, to keep pixel
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* spec. */
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double relWidth, relHeight; /* Dimensions for tkwin relative to size of
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* master. */
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Tcl_Obj *relWidthPtr;
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Tcl_Obj *relHeightPtr;
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Tk_Anchor anchor; /* Which point on tkwin is placed at the given
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* 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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* Type masks for options:
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*/
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#define IN_MASK 1
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static const Tk_OptionSpec optionSpecs[] = {
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{TK_OPTION_ANCHOR, "-anchor", NULL, NULL, "nw", -1,
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Tk_Offset(Slave, anchor), 0, 0, 0},
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{TK_OPTION_STRING_TABLE, "-bordermode", NULL, NULL, "inside", -1,
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Tk_Offset(Slave, borderMode), 0, borderModeStrings, 0},
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{TK_OPTION_PIXELS, "-height", NULL, NULL, "", Tk_Offset(Slave, heightPtr),
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Tk_Offset(Slave, height), TK_OPTION_NULL_OK, 0, 0},
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{TK_OPTION_WINDOW, "-in", NULL, NULL, "", -1, Tk_Offset(Slave, inTkwin),
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0, 0, IN_MASK},
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{TK_OPTION_DOUBLE, "-relheight", NULL, NULL, "",
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Tk_Offset(Slave, relHeightPtr), Tk_Offset(Slave, relHeight),
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TK_OPTION_NULL_OK, 0, 0},
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{TK_OPTION_DOUBLE, "-relwidth", NULL, NULL, "",
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Tk_Offset(Slave, relWidthPtr), Tk_Offset(Slave, relWidth),
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TK_OPTION_NULL_OK, 0, 0},
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{TK_OPTION_DOUBLE, "-relx", NULL, NULL, "0", -1,
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Tk_Offset(Slave, relX), 0, 0, 0},
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{TK_OPTION_DOUBLE, "-rely", NULL, NULL, "0", -1,
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Tk_Offset(Slave, relY), 0, 0, 0},
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{TK_OPTION_PIXELS, "-width", NULL, NULL, "", Tk_Offset(Slave, widthPtr),
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Tk_Offset(Slave, width), TK_OPTION_NULL_OK, 0, 0},
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{TK_OPTION_PIXELS, "-x", NULL, NULL, "0", Tk_Offset(Slave, xPtr),
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Tk_Offset(Slave, x), TK_OPTION_NULL_OK, 0, 0},
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{TK_OPTION_PIXELS, "-y", NULL, NULL, "0", Tk_Offset(Slave, yPtr),
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Tk_Offset(Slave, y), TK_OPTION_NULL_OK, 0, 0},
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{TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0}
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};
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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 is a
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* 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 placed
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* relative to this master. */
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int *abortPtr; /* If non-NULL, it means that there is a nested
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* call to RecomputePlacement already working on
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* this window. *abortPtr may be set to 1 to
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* abort that nested call. This happens, for
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* example, if tkwin or any of its slaves
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* is deleted. */
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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 is
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* 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 placer:
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*/
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static void PlaceRequestProc(ClientData clientData,
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Tk_Window tkwin);
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static void PlaceLostSlaveProc(ClientData clientData,
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Tk_Window tkwin);
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static const 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 functions defined later in this file:
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*/
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static void SlaveStructureProc(ClientData clientData,
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XEvent *eventPtr);
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static int ConfigureSlave(Tcl_Interp *interp, Tk_Window tkwin,
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Tk_OptionTable table, int objc,
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Tcl_Obj *const objv[]);
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static int PlaceInfoCommand(Tcl_Interp *interp, Tk_Window tkwin);
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static Slave * CreateSlave(Tk_Window tkwin, Tk_OptionTable table);
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static void FreeSlave(Slave *slavePtr);
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static Slave * FindSlave(Tk_Window tkwin);
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static Master * CreateMaster(Tk_Window tkwin);
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static Master * FindMaster(Tk_Window tkwin);
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static void MasterStructureProc(ClientData clientData,
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XEvent *eventPtr);
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static void RecomputePlacement(ClientData clientData);
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static void UnlinkSlave(Slave *slavePtr);
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/*
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*--------------------------------------------------------------
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*
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* Tk_PlaceObjCmd --
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*
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* This function is invoked to process the "place" Tcl commands. See the
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* user documentation for details on 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_PlaceObjCmd(
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ClientData clientData, /* Interpreter main window. */
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Tcl_Interp *interp, /* Current interpreter. */
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int objc, /* Number of arguments. */
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Tcl_Obj *const objv[]) /* Argument objects. */
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{
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Tk_Window main_win = clientData;
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Tk_Window tkwin;
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Slave *slavePtr;
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TkDisplay *dispPtr;
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Tk_OptionTable optionTable;
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static const char *const optionStrings[] = {
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"configure", "forget", "info", "slaves", NULL
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};
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enum options { PLACE_CONFIGURE, PLACE_FORGET, PLACE_INFO, PLACE_SLAVES };
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int index;
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if (objc < 3) {
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Tcl_WrongNumArgs(interp, 1, objv, "option|pathName args");
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return TCL_ERROR;
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}
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/*
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* Create the option table for this widget class. If it has already been
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* created, the cached pointer will be returned.
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*/
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optionTable = Tk_CreateOptionTable(interp, optionSpecs);
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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 (Tcl_GetString(objv[1])[0] == '.') {
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if (TkGetWindowFromObj(interp, main_win, objv[1],
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&tkwin) != TCL_OK) {
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return TCL_ERROR;
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}
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/*
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* Initialize, if that hasn't been done yet.
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*/
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dispPtr = ((TkWindow *) tkwin)->dispPtr;
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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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return ConfigureSlave(interp, tkwin, optionTable, objc-2, objv+2);
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}
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/*
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* Handle more general case of option followed by window name followed by
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* possible additional arguments.
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*/
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if (TkGetWindowFromObj(interp, main_win, objv[2],
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&tkwin) != TCL_OK) {
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return TCL_ERROR;
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}
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/*
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* Initialize, if that hasn't been done yet.
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*/
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dispPtr = ((TkWindow *) tkwin)->dispPtr;
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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 (Tcl_GetIndexFromObjStruct(interp, objv[1], optionStrings,
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sizeof(char *), "option", 0, &index) != TCL_OK) {
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return TCL_ERROR;
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}
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switch ((enum options) index) {
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case PLACE_CONFIGURE:
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if (objc == 3 || objc == 4) {
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Tcl_Obj *objPtr;
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slavePtr = FindSlave(tkwin);
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if (slavePtr == NULL) {
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return TCL_OK;
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}
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objPtr = Tk_GetOptionInfo(interp, (char *) slavePtr, optionTable,
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(objc == 4) ? objv[3] : NULL, tkwin);
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if (objPtr == NULL) {
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return TCL_ERROR;
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}
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Tcl_SetObjResult(interp, objPtr);
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return TCL_OK;
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}
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return ConfigureSlave(interp, tkwin, optionTable, objc-3, objv+3);
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case PLACE_FORGET:
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if (objc != 3) {
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Tcl_WrongNumArgs(interp, 2, objv, "pathName");
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return TCL_ERROR;
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}
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slavePtr = FindSlave(tkwin);
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if (slavePtr == NULL) {
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return TCL_OK;
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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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Tk_UnmaintainGeometry(slavePtr->tkwin, slavePtr->masterPtr->tkwin);
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}
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UnlinkSlave(slavePtr);
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Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->slaveTable,
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(char *) tkwin));
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Tk_DeleteEventHandler(tkwin, StructureNotifyMask, SlaveStructureProc,
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slavePtr);
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Tk_ManageGeometry(tkwin, NULL, NULL);
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Tk_UnmapWindow(tkwin);
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FreeSlave(slavePtr);
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break;
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case PLACE_INFO:
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if (objc != 3) {
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Tcl_WrongNumArgs(interp, 2, objv, "pathName");
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return TCL_ERROR;
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}
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return PlaceInfoCommand(interp, tkwin);
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case PLACE_SLAVES: {
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Master *masterPtr;
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if (objc != 3) {
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Tcl_WrongNumArgs(interp, 2, objv, "pathName");
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return TCL_ERROR;
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}
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masterPtr = FindMaster(tkwin);
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if (masterPtr != NULL) {
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Tcl_Obj *listPtr = Tcl_NewObj();
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for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
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slavePtr = slavePtr->nextPtr) {
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Tcl_ListObjAppendElement(NULL, listPtr,
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TkNewWindowObj(slavePtr->tkwin));
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}
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Tcl_SetObjResult(interp, listPtr);
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}
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break;
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}
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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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* CreateSlave --
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*
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* Given a Tk_Window token, find the Slave structure corresponding to
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* that token, creating a new one if necessary.
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*
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* Results:
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* Pointer to the Slave structure.
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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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CreateSlave(
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Tk_Window tkwin, /* Token for desired slave. */
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Tk_OptionTable table)
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{
|
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Tcl_HashEntry *hPtr;
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register Slave *slavePtr;
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int isNew;
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TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr;
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hPtr = Tcl_CreateHashEntry(&dispPtr->slaveTable, (char *) tkwin, &isNew);
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if (!isNew) {
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return Tcl_GetHashValue(hPtr);
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}
|
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/*
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* No preexisting slave structure for that window, so make a new one and
|
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* populate it with some default values.
|
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*/
|
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slavePtr = ckalloc(sizeof(Slave));
|
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memset(slavePtr, 0, sizeof(Slave));
|
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slavePtr->tkwin = tkwin;
|
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slavePtr->inTkwin = None;
|
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slavePtr->anchor = TK_ANCHOR_NW;
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slavePtr->borderMode = BM_INSIDE;
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slavePtr->optionTable = table;
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Tcl_SetHashValue(hPtr, slavePtr);
|
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Tk_CreateEventHandler(tkwin, StructureNotifyMask, SlaveStructureProc,
|
||
slavePtr);
|
||
return slavePtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* FreeSlave --
|
||
*
|
||
* Frees the resources held by a Slave structure.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side effects:
|
||
* Memory are freed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
FreeSlave(
|
||
Slave *slavePtr)
|
||
{
|
||
Tk_FreeConfigOptions((char *) slavePtr, slavePtr->optionTable,
|
||
slavePtr->tkwin);
|
||
ckfree(slavePtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* FindSlave --
|
||
*
|
||
* Given a Tk_Window token, find the Slave structure corresponding to
|
||
* that token. This is purely a lookup function; it will not create a
|
||
* record if one does not yet exist.
|
||
*
|
||
* Results:
|
||
* Pointer to Slave structure; NULL if none exists.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static Slave *
|
||
FindSlave(
|
||
Tk_Window tkwin) /* Token for desired slave. */
|
||
{
|
||
register Tcl_HashEntry *hPtr;
|
||
TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr;
|
||
|
||
hPtr = Tcl_FindHashEntry(&dispPtr->slaveTable, (char *) tkwin);
|
||
if (hPtr == NULL) {
|
||
return NULL;
|
||
}
|
||
return Tcl_GetHashValue(hPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* UnlinkSlave --
|
||
*
|
||
* This function removes a slave window from the chain of slaves in its
|
||
* master.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The slave list of slavePtr's master changes.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
UnlinkSlave(
|
||
Slave *slavePtr) /* Slave structure to be unlinked. */
|
||
{
|
||
register Master *masterPtr;
|
||
register Slave *prevPtr;
|
||
|
||
masterPtr = slavePtr->masterPtr;
|
||
if (masterPtr == NULL) {
|
||
return;
|
||
}
|
||
if (masterPtr->slavePtr == slavePtr) {
|
||
masterPtr->slavePtr = slavePtr->nextPtr;
|
||
} else {
|
||
for (prevPtr = masterPtr->slavePtr; ; prevPtr = prevPtr->nextPtr) {
|
||
if (prevPtr == NULL) {
|
||
Tcl_Panic("UnlinkSlave couldn't find slave to unlink");
|
||
}
|
||
if (prevPtr->nextPtr == slavePtr) {
|
||
prevPtr->nextPtr = slavePtr->nextPtr;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (masterPtr->abortPtr != NULL) {
|
||
*masterPtr->abortPtr = 1;
|
||
}
|
||
slavePtr->masterPtr = NULL;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* CreateMaster --
|
||
*
|
||
* Given a Tk_Window token, find the Master structure corresponding to
|
||
* that token, creating a new one if necessary.
|
||
*
|
||
* Results:
|
||
* Pointer to the Master structure.
|
||
*
|
||
* Side effects:
|
||
* A new Master structure may be created.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static Master *
|
||
CreateMaster(
|
||
Tk_Window tkwin) /* Token for desired master. */
|
||
{
|
||
Tcl_HashEntry *hPtr;
|
||
register Master *masterPtr;
|
||
int isNew;
|
||
TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr;
|
||
|
||
hPtr = Tcl_CreateHashEntry(&dispPtr->masterTable, (char *) tkwin, &isNew);
|
||
if (isNew) {
|
||
masterPtr = ckalloc(sizeof(Master));
|
||
masterPtr->tkwin = tkwin;
|
||
masterPtr->slavePtr = NULL;
|
||
masterPtr->abortPtr = NULL;
|
||
masterPtr->flags = 0;
|
||
Tcl_SetHashValue(hPtr, masterPtr);
|
||
Tk_CreateEventHandler(masterPtr->tkwin, StructureNotifyMask,
|
||
MasterStructureProc, masterPtr);
|
||
} else {
|
||
masterPtr = Tcl_GetHashValue(hPtr);
|
||
}
|
||
return masterPtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* FindMaster --
|
||
*
|
||
* Given a Tk_Window token, find the Master structure corresponding to
|
||
* that token. This is simply a lookup function; a new record will not be
|
||
* created if one does not already exist.
|
||
*
|
||
* Results:
|
||
* Pointer to the Master structure; NULL if one does not exist for the
|
||
* given Tk_Window token.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static Master *
|
||
FindMaster(
|
||
Tk_Window tkwin) /* Token for desired master. */
|
||
{
|
||
register Tcl_HashEntry *hPtr;
|
||
TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr;
|
||
|
||
hPtr = Tcl_FindHashEntry(&dispPtr->masterTable, (char *) tkwin);
|
||
if (hPtr == NULL) {
|
||
return NULL;
|
||
}
|
||
return Tcl_GetHashValue(hPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ConfigureSlave --
|
||
*
|
||
* This function is called to process an argv/argc list to reconfigure
|
||
* the placement of a window.
|
||
*
|
||
* Results:
|
||
* A standard Tcl result. If an error occurs then a message is left in
|
||
* the interp's result.
|
||
*
|
||
* Side effects:
|
||
* Information in slavePtr may change, and slavePtr's master is scheduled
|
||
* for reconfiguration.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
ConfigureSlave(
|
||
Tcl_Interp *interp, /* Used for error reporting. */
|
||
Tk_Window tkwin, /* Token for the window to manipulate. */
|
||
Tk_OptionTable table, /* Token for option table. */
|
||
int objc, /* Number of config arguments. */
|
||
Tcl_Obj *const objv[]) /* Object values for arguments. */
|
||
{
|
||
register Master *masterPtr;
|
||
Tk_SavedOptions savedOptions;
|
||
int mask;
|
||
Slave *slavePtr;
|
||
Tk_Window masterWin = (Tk_Window) NULL;
|
||
|
||
if (Tk_TopWinHierarchy(tkwin)) {
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"can't use placer on top-level window \"%s\"; use "
|
||
"wm command instead", Tk_PathName(tkwin)));
|
||
Tcl_SetErrorCode(interp, "TK", "GEOMETRY", "TOPLEVEL", NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
slavePtr = CreateSlave(tkwin, table);
|
||
|
||
if (Tk_SetOptions(interp, (char *) slavePtr, table, objc, objv,
|
||
slavePtr->tkwin, &savedOptions, &mask) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
|
||
/*
|
||
* Set slave flags. First clear the field, then add bits as needed.
|
||
*/
|
||
|
||
slavePtr->flags = 0;
|
||
if (slavePtr->heightPtr) {
|
||
slavePtr->flags |= CHILD_HEIGHT;
|
||
}
|
||
|
||
if (slavePtr->relHeightPtr) {
|
||
slavePtr->flags |= CHILD_REL_HEIGHT;
|
||
}
|
||
|
||
if (slavePtr->relWidthPtr) {
|
||
slavePtr->flags |= CHILD_REL_WIDTH;
|
||
}
|
||
|
||
if (slavePtr->widthPtr) {
|
||
slavePtr->flags |= CHILD_WIDTH;
|
||
}
|
||
|
||
if (!(mask & IN_MASK) && (slavePtr->masterPtr != NULL)) {
|
||
/*
|
||
* If no -in option was passed and the slave is already placed then
|
||
* just recompute the placement.
|
||
*/
|
||
|
||
masterPtr = slavePtr->masterPtr;
|
||
goto scheduleLayout;
|
||
} else if (mask & IN_MASK) {
|
||
/* -in changed */
|
||
Tk_Window tkwin;
|
||
Tk_Window ancestor;
|
||
|
||
tkwin = slavePtr->inTkwin;
|
||
|
||
/*
|
||
* Make sure that the new master is either the logical parent of the
|
||
* slave or a descendant of that window, and that the master and slave
|
||
* aren't the same.
|
||
*/
|
||
|
||
for (ancestor = tkwin; ; ancestor = Tk_Parent(ancestor)) {
|
||
if (ancestor == Tk_Parent(slavePtr->tkwin)) {
|
||
break;
|
||
}
|
||
if (Tk_TopWinHierarchy(ancestor)) {
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"can't place %s relative to %s",
|
||
Tk_PathName(slavePtr->tkwin), Tk_PathName(tkwin)));
|
||
Tcl_SetErrorCode(interp, "TK", "GEOMETRY", "HIERARCHY", NULL);
|
||
goto error;
|
||
}
|
||
}
|
||
if (slavePtr->tkwin == tkwin) {
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"can't place %s relative to itself",
|
||
Tk_PathName(slavePtr->tkwin)));
|
||
Tcl_SetErrorCode(interp, "TK", "GEOMETRY", "LOOP", NULL);
|
||
goto error;
|
||
}
|
||
if ((slavePtr->masterPtr != NULL)
|
||
&& (slavePtr->masterPtr->tkwin == tkwin)) {
|
||
/*
|
||
* Re-using same old master. Nothing to do.
|
||
*/
|
||
|
||
masterPtr = slavePtr->masterPtr;
|
||
goto scheduleLayout;
|
||
}
|
||
if ((slavePtr->masterPtr != NULL) &&
|
||
(slavePtr->masterPtr->tkwin != Tk_Parent(slavePtr->tkwin))) {
|
||
Tk_UnmaintainGeometry(slavePtr->tkwin, slavePtr->masterPtr->tkwin);
|
||
}
|
||
UnlinkSlave(slavePtr);
|
||
masterWin = tkwin;
|
||
}
|
||
|
||
/*
|
||
* If there's no master specified for this slave, use its Tk_Parent.
|
||
*/
|
||
|
||
if (masterWin == NULL) {
|
||
masterWin = Tk_Parent(slavePtr->tkwin);
|
||
slavePtr->inTkwin = masterWin;
|
||
}
|
||
|
||
/*
|
||
* Manage the slave window in this master.
|
||
*/
|
||
|
||
masterPtr = CreateMaster(masterWin);
|
||
slavePtr->masterPtr = masterPtr;
|
||
slavePtr->nextPtr = masterPtr->slavePtr;
|
||
masterPtr->slavePtr = slavePtr;
|
||
Tk_ManageGeometry(slavePtr->tkwin, &placerType, slavePtr);
|
||
|
||
/*
|
||
* Arrange for the master to be re-arranged at the first idle moment.
|
||
*/
|
||
|
||
scheduleLayout:
|
||
Tk_FreeSavedOptions(&savedOptions);
|
||
|
||
if (!(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
||
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
||
Tcl_DoWhenIdle(RecomputePlacement, masterPtr);
|
||
}
|
||
return TCL_OK;
|
||
|
||
/*
|
||
* Error while processing some option, cleanup and return.
|
||
*/
|
||
|
||
error:
|
||
Tk_RestoreSavedOptions(&savedOptions);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* PlaceInfoCommand --
|
||
*
|
||
* Implementation of the [place info] subcommand. See the user
|
||
* documentation for information on what it does.
|
||
*
|
||
* Results:
|
||
* Standard Tcl result.
|
||
*
|
||
* Side effects:
|
||
* If the given tkwin is managed by the placer, this function will put
|
||
* information about that placement in the interp's result.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
PlaceInfoCommand(
|
||
Tcl_Interp *interp, /* Interp into which to place result. */
|
||
Tk_Window tkwin) /* Token for the window to get info on. */
|
||
{
|
||
Slave *slavePtr;
|
||
Tcl_Obj *infoObj;
|
||
|
||
slavePtr = FindSlave(tkwin);
|
||
if (slavePtr == NULL) {
|
||
return TCL_OK;
|
||
}
|
||
infoObj = Tcl_NewObj();
|
||
if (slavePtr->masterPtr != NULL) {
|
||
Tcl_AppendToObj(infoObj, "-in", -1);
|
||
Tcl_ListObjAppendElement(NULL, infoObj,
|
||
TkNewWindowObj(slavePtr->masterPtr->tkwin));
|
||
Tcl_AppendToObj(infoObj, " ", -1);
|
||
}
|
||
Tcl_AppendPrintfToObj(infoObj,
|
||
"-x %d -relx %.4g -y %d -rely %.4g",
|
||
slavePtr->x, slavePtr->relX, slavePtr->y, slavePtr->relY);
|
||
if (slavePtr->flags & CHILD_WIDTH) {
|
||
Tcl_AppendPrintfToObj(infoObj, " -width %d", slavePtr->width);
|
||
} else {
|
||
Tcl_AppendToObj(infoObj, " -width {}", -1);
|
||
}
|
||
if (slavePtr->flags & CHILD_REL_WIDTH) {
|
||
Tcl_AppendPrintfToObj(infoObj,
|
||
" -relwidth %.4g", slavePtr->relWidth);
|
||
} else {
|
||
Tcl_AppendToObj(infoObj, " -relwidth {}", -1);
|
||
}
|
||
if (slavePtr->flags & CHILD_HEIGHT) {
|
||
Tcl_AppendPrintfToObj(infoObj, " -height %d", slavePtr->height);
|
||
} else {
|
||
Tcl_AppendToObj(infoObj, " -height {}", -1);
|
||
}
|
||
if (slavePtr->flags & CHILD_REL_HEIGHT) {
|
||
Tcl_AppendPrintfToObj(infoObj,
|
||
" -relheight %.4g", slavePtr->relHeight);
|
||
} else {
|
||
Tcl_AppendToObj(infoObj, " -relheight {}", -1);
|
||
}
|
||
|
||
Tcl_AppendPrintfToObj(infoObj, " -anchor %s -bordermode %s",
|
||
Tk_NameOfAnchor(slavePtr->anchor),
|
||
borderModeStrings[slavePtr->borderMode]);
|
||
Tcl_SetObjResult(interp, infoObj);
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* RecomputePlacement --
|
||
*
|
||
* This function 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) /* Pointer to Master record. */
|
||
{
|
||
register Master *masterPtr = clientData;
|
||
register Slave *slavePtr;
|
||
int x, y, width, height, tmp;
|
||
int masterWidth, masterHeight, masterX, masterY;
|
||
double x1, y1, x2, y2;
|
||
int abort; /* May get set to non-zero to abort this
|
||
* placement operation. */
|
||
|
||
masterPtr->flags &= ~PARENT_RECONFIG_PENDING;
|
||
|
||
/*
|
||
* Abort any nested call to RecomputePlacement for this window, since
|
||
* we'll do everything necessary here, and set up so this call can be
|
||
* aborted if necessary.
|
||
*/
|
||
|
||
if (masterPtr->abortPtr != NULL) {
|
||
*masterPtr->abortPtr = 1;
|
||
}
|
||
masterPtr->abortPtr = &abort;
|
||
abort = 0;
|
||
Tcl_Preserve(masterPtr);
|
||
|
||
/*
|
||
* Iterate over all the slaves for the master. Each slave's geometry can
|
||
* be computed independently of the other slaves. Changes to the window's
|
||
* structure could cause almost anything to happen, including deleting the
|
||
* parent or child. If this happens, we'll be told to abort.
|
||
*/
|
||
|
||
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL && !abort;
|
||
slavePtr = slavePtr->nextPtr) {
|
||
/*
|
||
* Step 1: compute size and borderwidth of master, taking into account
|
||
* desired border mode.
|
||
*/
|
||
|
||
masterX = masterY = 0;
|
||
masterWidth = Tk_Width(masterPtr->tkwin);
|
||
masterHeight = Tk_Height(masterPtr->tkwin);
|
||
if (slavePtr->borderMode == BM_INSIDE) {
|
||
masterX = Tk_InternalBorderLeft(masterPtr->tkwin);
|
||
masterY = Tk_InternalBorderTop(masterPtr->tkwin);
|
||
masterWidth -= masterX + Tk_InternalBorderRight(masterPtr->tkwin);
|
||
masterHeight -= masterY +
|
||
Tk_InternalBorderBottom(masterPtr->tkwin);
|
||
} else if (slavePtr->borderMode == BM_OUTSIDE) {
|
||
masterX = masterY = -Tk_Changes(masterPtr->tkwin)->border_width;
|
||
masterWidth -= 2 * masterX;
|
||
masterHeight -= 2 * masterY;
|
||
}
|
||
|
||
/*
|
||
* Step 2: compute size of slave (outside dimensions including border)
|
||
* and location of anchor point within master.
|
||
*/
|
||
|
||
x1 = slavePtr->x + masterX + (slavePtr->relX*masterWidth);
|
||
x = (int) (x1 + ((x1 > 0) ? 0.5 : -0.5));
|
||
y1 = slavePtr->y + masterY + (slavePtr->relY*masterHeight);
|
||
y = (int) (y1 + ((y1 > 0) ? 0.5 : -0.5));
|
||
if (slavePtr->flags & (CHILD_WIDTH|CHILD_REL_WIDTH)) {
|
||
width = 0;
|
||
if (slavePtr->flags & CHILD_WIDTH) {
|
||
width += slavePtr->width;
|
||
}
|
||
if (slavePtr->flags & CHILD_REL_WIDTH) {
|
||
/*
|
||
* The code below is a bit tricky. In order to round correctly
|
||
* when both relX and relWidth are specified, compute the
|
||
* location of the right edge and round that, then compute
|
||
* width. If we compute the width and round it, rounding
|
||
* errors in relX and relWidth accumulate.
|
||
*/
|
||
|
||
x2 = x1 + (slavePtr->relWidth*masterWidth);
|
||
tmp = (int) (x2 + ((x2 > 0) ? 0.5 : -0.5));
|
||
width += tmp - x;
|
||
}
|
||
} else {
|
||
width = Tk_ReqWidth(slavePtr->tkwin)
|
||
+ 2*Tk_Changes(slavePtr->tkwin)->border_width;
|
||
}
|
||
if (slavePtr->flags & (CHILD_HEIGHT|CHILD_REL_HEIGHT)) {
|
||
height = 0;
|
||
if (slavePtr->flags & CHILD_HEIGHT) {
|
||
height += slavePtr->height;
|
||
}
|
||
if (slavePtr->flags & CHILD_REL_HEIGHT) {
|
||
/*
|
||
* See note above for rounding errors in width computation.
|
||
*/
|
||
|
||
y2 = y1 + (slavePtr->relHeight*masterHeight);
|
||
tmp = (int) (y2 + ((y2 > 0) ? 0.5 : -0.5));
|
||
height += tmp - y;
|
||
}
|
||
} 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: 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 5: reconfigure the window and map it if needed. If the slave
|
||
* is a child of the master, we do this ourselves. If the slave isn't
|
||
* a child of the master, let Tk_MaintainGeometry do the work (it will
|
||
* re-adjust things as relevant windows map, unmap, and move).
|
||
*/
|
||
|
||
if (masterPtr->tkwin == Tk_Parent(slavePtr->tkwin)) {
|
||
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, width, height);
|
||
}
|
||
if (abort) {
|
||
break;
|
||
}
|
||
|
||
/*
|
||
* Don't map the slave unless the master is mapped: the slave will
|
||
* get mapped later, when the master is mapped.
|
||
*/
|
||
|
||
if (Tk_IsMapped(masterPtr->tkwin)) {
|
||
Tk_MapWindow(slavePtr->tkwin);
|
||
}
|
||
} else {
|
||
if ((width <= 0) || (height <= 0)) {
|
||
Tk_UnmaintainGeometry(slavePtr->tkwin, masterPtr->tkwin);
|
||
Tk_UnmapWindow(slavePtr->tkwin);
|
||
} else {
|
||
Tk_MaintainGeometry(slavePtr->tkwin, masterPtr->tkwin,
|
||
x, y, width, height);
|
||
}
|
||
}
|
||
}
|
||
|
||
masterPtr->abortPtr = NULL;
|
||
Tcl_Release(masterPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* MasterStructureProc --
|
||
*
|
||
* This function 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 clientData, /* Pointer to Master structure for window
|
||
* referred to by eventPtr. */
|
||
XEvent *eventPtr) /* Describes what just happened. */
|
||
{
|
||
register Master *masterPtr = clientData;
|
||
register Slave *slavePtr, *nextPtr;
|
||
TkDisplay *dispPtr = ((TkWindow *) masterPtr->tkwin)->dispPtr;
|
||
|
||
switch (eventPtr->type) {
|
||
case ConfigureNotify:
|
||
if ((masterPtr->slavePtr != NULL)
|
||
&& !(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
||
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
||
Tcl_DoWhenIdle(RecomputePlacement, masterPtr);
|
||
}
|
||
return;
|
||
case DestroyNotify:
|
||
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
|
||
slavePtr = nextPtr) {
|
||
slavePtr->masterPtr = NULL;
|
||
nextPtr = slavePtr->nextPtr;
|
||
slavePtr->nextPtr = NULL;
|
||
}
|
||
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->masterTable,
|
||
(char *) masterPtr->tkwin));
|
||
if (masterPtr->flags & PARENT_RECONFIG_PENDING) {
|
||
Tcl_CancelIdleCall(RecomputePlacement, masterPtr);
|
||
}
|
||
masterPtr->tkwin = NULL;
|
||
if (masterPtr->abortPtr != NULL) {
|
||
*masterPtr->abortPtr = 1;
|
||
}
|
||
Tcl_EventuallyFree(masterPtr, TCL_DYNAMIC);
|
||
return;
|
||
case MapNotify:
|
||
/*
|
||
* When a master gets mapped, must redo the geometry computation so
|
||
* that all of its slaves get remapped.
|
||
*/
|
||
|
||
if ((masterPtr->slavePtr != NULL)
|
||
&& !(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
||
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
||
Tcl_DoWhenIdle(RecomputePlacement, masterPtr);
|
||
}
|
||
return;
|
||
case UnmapNotify:
|
||
/*
|
||
* Unmap all of the slaves when the master gets unmapped, so that they
|
||
* don't keep redisplaying themselves.
|
||
*/
|
||
|
||
for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
|
||
slavePtr = slavePtr->nextPtr) {
|
||
Tk_UnmapWindow(slavePtr->tkwin);
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* SlaveStructureProc --
|
||
*
|
||
* This function 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 clientData, /* Pointer to Slave structure for window
|
||
* referred to by eventPtr. */
|
||
XEvent *eventPtr) /* Describes what just happened. */
|
||
{
|
||
register Slave *slavePtr = clientData;
|
||
TkDisplay *dispPtr = ((TkWindow *) slavePtr->tkwin)->dispPtr;
|
||
|
||
if (eventPtr->type == DestroyNotify) {
|
||
if (slavePtr->masterPtr != NULL) {
|
||
UnlinkSlave(slavePtr);
|
||
}
|
||
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->slaveTable,
|
||
(char *) slavePtr->tkwin));
|
||
FreeSlave(slavePtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* PlaceRequestProc --
|
||
*
|
||
* This function 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 clientData, /* Pointer to our record for slave. */
|
||
Tk_Window tkwin) /* Window that changed its desired size. */
|
||
{
|
||
Slave *slavePtr = clientData;
|
||
Master *masterPtr;
|
||
|
||
if ((slavePtr->flags & (CHILD_WIDTH|CHILD_REL_WIDTH))
|
||
&& (slavePtr->flags & (CHILD_HEIGHT|CHILD_REL_HEIGHT))) {
|
||
return;
|
||
}
|
||
masterPtr = slavePtr->masterPtr;
|
||
if (masterPtr == NULL) {
|
||
return;
|
||
}
|
||
if (!(masterPtr->flags & PARENT_RECONFIG_PENDING)) {
|
||
masterPtr->flags |= PARENT_RECONFIG_PENDING;
|
||
Tcl_DoWhenIdle(RecomputePlacement, masterPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* PlaceLostSlaveProc --
|
||
*
|
||
* This function is invoked by Tk whenever some other geometry claims
|
||
* control over a slave that used to be managed by us.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Forgets all placer-related information about the slave.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
PlaceLostSlaveProc(
|
||
ClientData clientData, /* Slave structure for slave window that was
|
||
* stolen away. */
|
||
Tk_Window tkwin) /* Tk's handle for the slave window. */
|
||
{
|
||
register Slave *slavePtr = clientData;
|
||
TkDisplay *dispPtr = ((TkWindow *) slavePtr->tkwin)->dispPtr;
|
||
|
||
if (slavePtr->masterPtr->tkwin != Tk_Parent(slavePtr->tkwin)) {
|
||
Tk_UnmaintainGeometry(slavePtr->tkwin, slavePtr->masterPtr->tkwin);
|
||
}
|
||
Tk_UnmapWindow(tkwin);
|
||
UnlinkSlave(slavePtr);
|
||
Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->slaveTable,
|
||
(char *) tkwin));
|
||
Tk_DeleteEventHandler(tkwin, StructureNotifyMask, SlaveStructureProc,
|
||
slavePtr);
|
||
FreeSlave(slavePtr);
|
||
}
|
||
|
||
/*
|
||
* Local Variables:
|
||
* mode: c
|
||
* c-basic-offset: 4
|
||
* fill-column: 78
|
||
* End:
|
||
*/
|