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-rw-r--r--generic/tkPanedWindow.c2780
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diff --git a/generic/tkPanedWindow.c b/generic/tkPanedWindow.c
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+++ b/generic/tkPanedWindow.c
@@ -0,0 +1,2780 @@
+/*
+ * tkPanedWindow.c --
+ *
+ * This module implements "paned window" widgets that are object
+ * based. A "paned window" is a widget that manages the geometry for
+ * some number of other widgets, placing a movable "sash" between them,
+ * which can be used to alter the relative sizes of adjacent widgets.
+ *
+ * Copyright (c) 1997 Sun Microsystems, Inc.
+ * Copyright (c) 2000 Ajuba Solutions.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * RCS: @(#) $Id: tkPanedWindow.c,v 1.1 2002/02/22 02:41:17 hobbs Exp $
+ */
+
+#include "tkPort.h"
+#include "default.h"
+#include "tkInt.h"
+
+#if ((TCL_MAJOR_VERSION > 8) || (TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION >= 4))
+#define TCL_84
+#endif
+
+/*
+ * We need to have TK_OPTION_CUSTOM, et al defined to compile with any
+ * stubs-enable version of Tk, but we'll only allow the widget to
+ * be created in 8.4+. These are taken from 8.4+ tk.h.
+ */
+#ifndef TCL_84
+
+/*
+ * Generating code for accessing these parts of the stub table when
+ * compiling against a core older than 8.4a2 is a hassle because
+ * we have to write up some macros hiding some very hackish pointer
+ * arithmetics to get at these fields. We assume that pointer to
+ * functions are always of the same size.
+ */
+
+#define STUB_BASE ((char*)(&(tkStubsPtr->tk_GetAnchorFromObj))) /*field 200*/
+#define procPtrSize (sizeof(Tcl_DriverBlockModeProc *))
+#define IDX(n) (((n)-200) * procPtrSize)
+#define SLOT(n) (STUB_BASE + IDX(n))
+
+typedef Tk_Window (tk_CreateAnonymousWindow) _ANSI_ARGS_((Tcl_Interp * interp,
+ Tk_Window parent, char * screenName)); /* 241 */
+#define Tk_CreateAnonymousWindow (*((tk_CreateAnonymousWindow**) (SLOT(241))))
+
+#define TK_OPTION_CUSTOM (TK_OPTION_END + 1)
+typedef int (Tk_CustomOptionSetProc) _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, Tk_Window tkwin, Tcl_Obj **value, char *widgRec,
+ int offset, char *saveInternalPtr, int flags));
+typedef Tcl_Obj *(Tk_CustomOptionGetProc) _ANSI_ARGS_((ClientData clientData,
+ Tk_Window tkwin, char *widgRec, int offset));
+typedef void (Tk_CustomOptionRestoreProc) _ANSI_ARGS_((ClientData clientData,
+ Tk_Window tkwin, char *internalPtr, char *saveInternalPtr));
+typedef void (Tk_CustomOptionFreeProc) _ANSI_ARGS_((ClientData clientData,
+ Tk_Window tkwin, char *internalPtr));
+
+typedef struct Tk_ObjCustomOption {
+ char *name; /* Name of the custom option. */
+ Tk_CustomOptionSetProc *setProc; /* Function to use to set a record's
+ * option value from a Tcl_Obj */
+ Tk_CustomOptionGetProc *getProc; /* Function to use to get a Tcl_Obj
+ * representation from an internal
+ * representation of an option. */
+ Tk_CustomOptionRestoreProc *restoreProc; /* Function to use to restore a
+ * saved value for the internal
+ * representation. */
+ Tk_CustomOptionFreeProc *freeProc; /* Function to use to free the internal
+ * representation of an option. */
+ ClientData clientData; /* Arbitrary one-word value passed to
+ * the handling procs. */
+} Tk_ObjCustomOption;
+
+#endif
+
+/* Flag values for "sticky"ness The 16 combinations subsume the packer's
+ * notion of anchor and fill.
+ *
+ * STICK_NORTH This window sticks to the top of its cavity.
+ * STICK_EAST This window sticks to the right edge of its cavity.
+ * STICK_SOUTH This window sticks to the bottom of its cavity.
+ * STICK_WEST This window sticks to the left edge of its cavity.
+ */
+
+#define STICK_NORTH 1
+#define STICK_EAST 2
+#define STICK_SOUTH 4
+#define STICK_WEST 8
+/*
+ * The following table defines the legal values for the -orient option.
+ */
+
+static char *orientStrings[] = {
+ "horizontal", "vertical", (char *) NULL
+};
+
+enum orient { ORIENT_HORIZONTAL, ORIENT_VERTICAL };
+
+typedef struct {
+ Tk_OptionTable pwOptions; /* Token for paned window option table. */
+ Tk_OptionTable slaveOpts; /* Token for slave cget option table. */
+} OptionTables;
+
+/*
+ * One structure of the following type is kept for each window
+ * managed by a paned window widget.
+ */
+
+typedef struct Slave {
+ Tk_Window tkwin; /* Window being managed. */
+
+ int minSize; /* Minimum size of this pane, on the
+ * relevant axis, in pixels. */
+ int padx; /* Additional padding requested for
+ * slave, in the x dimension. */
+ int pady; /* Additional padding requested for
+ * slave, in the y dimension. */
+ Tcl_Obj *widthPtr, *heightPtr; /* Tcl_Obj rep's of slave width/height,
+ * to allow for null values. */
+ int width; /* Slave width. */
+ int height; /* Slave height. */
+ int sticky; /* Sticky string. */
+ int x, y; /* Coordinates of the widget. */
+ int paneWidth, paneHeight; /* Pane dimensions (may be different
+ * from slave width/height). */
+ int sashx, sashy; /* Coordinates of the sash of the
+ * right or bottom of this pane. */
+ int markx, marky; /* Coordinates of the last mark set
+ * for the sash. */
+ int handlex, handley; /* Coordinates of the sash handle. */
+ struct PanedWindow *masterPtr; /* Paned window managing the window. */
+ Tk_Window after; /* Placeholder for parsing options. */
+ Tk_Window before; /* Placeholder for parsing options. */
+} Slave;
+
+/*
+ * A data structure of the following type is kept for each paned window
+ * widget managed by this file:
+ */
+
+typedef struct PanedWindow {
+ Tk_Window tkwin; /* Window that embodies the paned window. */
+ Tk_Window proxywin; /* Window for the resizing proxy. */
+ Display *display; /* X's token for the window's display. */
+ Tcl_Interp *interp; /* Interpreter associated with widget. */
+ Tcl_Command widgetCmd; /* Token for square's widget command. */
+ Tk_OptionTable optionTable; /* Token representing the configuration
+ * specifications. */
+ Tk_OptionTable slaveOpts; /* Token for slave cget table. */
+ Tk_3DBorder background; /* Background color. */
+ int borderWidth; /* Value of -borderwidth option. */
+ int relief; /* 3D border effect (TK_RELIEF_RAISED, etc) */
+ Tcl_Obj *widthPtr; /* Tcl_Obj rep for width. */
+ Tcl_Obj *heightPtr; /* Tcl_Obj rep for height. */
+ int width, height; /* Width and height of the widget. */
+ enum orient orient; /* Orientation of the widget. */
+ Tk_Cursor cursor; /* Current cursor for window, or None. */
+ int resizeOpaque; /* Boolean indicating whether resize should be
+ * opaque or rubberband style. */
+
+ int sashRelief; /* Relief used to draw sash. */
+ int sashWidth; /* Width of each sash, in pixels. */
+ Tcl_Obj *sashWidthPtr; /* Tcl_Obj rep for sash width. */
+ int sashPad; /* Additional padding around each sash. */
+ Tcl_Obj *sashPadPtr; /* Tcl_Obj rep for sash padding. */
+ int showHandle; /* Boolean indicating whether sash handles
+ * should be drawn. */
+ int handleSize; /* Size of one side of a sash handle (handles
+ * are square), in pixels. */
+ int handlePad; /* Distance from border to draw handle. */
+ Tcl_Obj *handleSizePtr; /* Tcl_Obj rep for handle size. */
+ Tk_Cursor sashCursor; /* Cursor used when mouse is above a sash. */
+
+ GC gc; /* Graphics context for copying from
+ * off-screen pixmap onto screen. */
+ int proxyx, proxyy; /* Proxy x,y coordinates. */
+ Slave **slaves; /* Pointer to array of Slaves. */
+ int numSlaves; /* Number of slaves. */
+ int sizeofSlaves; /* Number of elements in the slaves array. */
+ int flags; /* Flags for widget; see below. */
+} PanedWindow;
+
+/*
+ * Flags used for paned windows:
+ *
+ * REDRAW_PENDING: Non-zero means a DoWhenIdle handler has
+ * been queued to redraw this window.
+ *
+ * WIDGET_DELETED: Non-zero means that the paned window has
+ * been, or is in the process of being, deleted.
+ */
+
+#define REDRAW_PENDING 0x0001
+#define WIDGET_DELETED 0x0002
+#define REQUESTED_RELAYOUT 0x0004
+#define RECOMPUTE_GEOMETRY 0x0008
+#define PROXY_REDRAW_PENDING 0x0010
+/*
+ * Forward declarations for procedures defined later in this file:
+ */
+
+int Tk_PanedWindowObjCmd _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, int objc, Tcl_Obj * CONST objv[]));
+static void PanedWindowCmdDeletedProc _ANSI_ARGS_((ClientData clientData));
+static int ConfigurePanedWindow _ANSI_ARGS_((Tcl_Interp *interp,
+ PanedWindow *pwPtr, int objc, Tcl_Obj *CONST objv[]));
+static void DestroyPanedWindow _ANSI_ARGS_((PanedWindow *pwPtr));
+static void DisplayPanedWindow _ANSI_ARGS_((ClientData clientData));
+static void PanedWindowEventProc _ANSI_ARGS_((ClientData clientData,
+ XEvent *eventPtr));
+static void ProxyWindowEventProc _ANSI_ARGS_((ClientData clientData,
+ XEvent *eventPtr));
+static void DisplayProxyWindow _ANSI_ARGS_((ClientData clientData));
+void PanedWindowWorldChanged _ANSI_ARGS_((ClientData instanceData));
+static int PanedWindowWidgetObjCmd _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *, int objc, Tcl_Obj * CONST objv[]));
+static void PanedWindowLostSlaveProc _ANSI_ARGS_((ClientData clientData,
+ Tk_Window tkwin));
+static void PanedWindowReqProc _ANSI_ARGS_((ClientData clientData,
+ Tk_Window tkwin));
+static void ArrangePanes _ANSI_ARGS_((ClientData clientData));
+static void Unlink _ANSI_ARGS_((Slave *slavePtr));
+static Slave * GetPane _ANSI_ARGS_((PanedWindow *pwPtr, Tk_Window tkwin));
+static void SlaveStructureProc _ANSI_ARGS_((ClientData clientData,
+ XEvent *eventPtr));
+static int PanedWindowSashCommand _ANSI_ARGS_((PanedWindow *pwPtr,
+ Tcl_Interp *interp, int objc, Tcl_Obj * CONST objv[]));
+static int PanedWindowProxyCommand _ANSI_ARGS_((PanedWindow *pwPtr,
+ Tcl_Interp *interp, int objc, Tcl_Obj * CONST objv[]));
+static void ComputeGeometry _ANSI_ARGS_((PanedWindow *pwPtr));
+static int ConfigureSlaves _ANSI_ARGS_((PanedWindow *pwPtr,
+ Tcl_Interp *interp, int objc, Tcl_Obj * CONST objv[]));
+static void DestroyOptionTables _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp));
+static int SetSticky _ANSI_ARGS_((ClientData clientData,
+ Tcl_Interp *interp, Tk_Window tkwin,
+ Tcl_Obj **value, char *recordPtr, int internalOffset,
+ char *oldInternalPtr, int flags));
+static Tcl_Obj *GetSticky _ANSI_ARGS_((ClientData clientData, Tk_Window tkwin,
+ char *recordPtr, int internalOffset));
+static void RestoreSticky _ANSI_ARGS_((ClientData clientData,
+ Tk_Window tkwin, char *internalPtr,
+ char *oldInternalPtr));
+static void AdjustForSticky _ANSI_ARGS_((int sticky, int cavityWidth,
+ int cavityHeight, int *xPtr, int *yPtr,
+ int *slaveWidthPtr, int *slaveHeightPtr));
+static void MoveSash _ANSI_ARGS_((PanedWindow *pwPtr, int sash, int diff));
+static int ObjectIsEmpty _ANSI_ARGS_((Tcl_Obj *objPtr));
+static char * ComputeSlotAddress _ANSI_ARGS_((char *recordPtr, int offset));
+static int PanedWindowIdentifyCoords _ANSI_ARGS_((PanedWindow *pwPtr,
+ Tcl_Interp *interp, int x, int y));
+
+static Tk_GeomMgr panedWindowMgrType = {
+ "panedwindow", /* name */
+ PanedWindowReqProc, /* requestProc */
+ PanedWindowLostSlaveProc, /* lostSlaveProc */
+};
+
+/*
+ * Information used for objv parsing.
+ */
+
+#define GEOMETRY 0x0001
+
+/*
+ * The following structure contains pointers to functions used for processing
+ * the custom "-sticky" option for slave windows.
+ */
+
+static Tk_ObjCustomOption stickyOption = {
+ "sticky", /* name */
+ SetSticky, /* setProc */
+ GetSticky, /* getProc */
+ RestoreSticky, /* restoreProc */
+ (Tk_CustomOptionFreeProc *)NULL, /* freeProc */
+ 0
+};
+
+static Tk_OptionSpec optionSpecs[] = {
+ {TK_OPTION_BORDER, "-background", "background", "Background",
+ DEF_PANEDWINDOW_BG_COLOR, -1, Tk_Offset(PanedWindow, background), 0,
+ (ClientData) DEF_PANEDWINDOW_BG_MONO},
+ {TK_OPTION_SYNONYM, "-bd", (char *) NULL, (char *) NULL,
+ (char *) NULL, 0, -1, 0, (ClientData) "-borderwidth"},
+ {TK_OPTION_SYNONYM, "-bg", (char *) NULL, (char *) NULL,
+ (char *) NULL, 0, -1, 0, (ClientData) "-background"},
+ {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
+ DEF_PANEDWINDOW_BORDERWIDTH, -1, Tk_Offset(PanedWindow, borderWidth),
+ 0, 0, GEOMETRY},
+ {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor",
+ DEF_PANEDWINDOW_CURSOR, -1, Tk_Offset(PanedWindow, cursor),
+ TK_OPTION_NULL_OK, 0, 0},
+ {TK_OPTION_PIXELS, "-handlepad", "handlePad", "HandlePad",
+ DEF_PANEDWINDOW_HANDLEPAD, -1, Tk_Offset(PanedWindow, handlePad),
+ 0, 0},
+ {TK_OPTION_PIXELS, "-handlesize", "handleSize", "HandleSize",
+ DEF_PANEDWINDOW_HANDLESIZE, Tk_Offset(PanedWindow, handleSizePtr),
+ Tk_Offset(PanedWindow, handleSize), 0, 0, GEOMETRY},
+ {TK_OPTION_PIXELS, "-height", "height", "Height",
+ DEF_PANEDWINDOW_HEIGHT, Tk_Offset(PanedWindow, heightPtr),
+ Tk_Offset(PanedWindow, height), TK_OPTION_NULL_OK, 0, GEOMETRY},
+ {TK_OPTION_BOOLEAN, "-opaqueresize", "opaqueResize", "OpaqueResize",
+ DEF_PANEDWINDOW_OPAQUERESIZE, -1,
+ Tk_Offset(PanedWindow, resizeOpaque), 0, 0, 0},
+ {TK_OPTION_STRING_TABLE, "-orient", "orient", "Orient",
+ DEF_PANEDWINDOW_ORIENT, -1, Tk_Offset(PanedWindow, orient),
+ 0, (ClientData) orientStrings, GEOMETRY},
+ {TK_OPTION_RELIEF, "-relief", "relief", "Relief",
+ DEF_PANEDWINDOW_RELIEF, -1, Tk_Offset(PanedWindow, relief), 0, 0, 0},
+ {TK_OPTION_CURSOR, "-sashcursor", "sashCursor", "Cursor",
+ DEF_PANEDWINDOW_SASHCURSOR, -1, Tk_Offset(PanedWindow, sashCursor),
+ TK_OPTION_NULL_OK, 0, 0},
+ {TK_OPTION_PIXELS, "-sashpad", "sashPad", "SashPad",
+ DEF_PANEDWINDOW_SASHPAD, -1, Tk_Offset(PanedWindow, sashPad),
+ 0, 0, GEOMETRY},
+ {TK_OPTION_RELIEF, "-sashrelief", "sashRelief", "Relief",
+ DEF_PANEDWINDOW_SASHRELIEF, -1, Tk_Offset(PanedWindow, sashRelief),
+ 0, 0, 0},
+ {TK_OPTION_PIXELS, "-sashwidth", "sashWidth", "Width",
+ DEF_PANEDWINDOW_SASHWIDTH, Tk_Offset(PanedWindow, sashWidthPtr),
+ Tk_Offset(PanedWindow, sashWidth), 0, 0, GEOMETRY},
+ {TK_OPTION_BOOLEAN, "-showhandle", "showHandle", "ShowHandle",
+ DEF_PANEDWINDOW_SHOWHANDLE, -1, Tk_Offset(PanedWindow, showHandle),
+ 0, 0, GEOMETRY},
+ {TK_OPTION_PIXELS, "-width", "width", "Width",
+ DEF_PANEDWINDOW_WIDTH, Tk_Offset(PanedWindow, widthPtr),
+ Tk_Offset(PanedWindow, width), TK_OPTION_NULL_OK, 0, GEOMETRY},
+ {TK_OPTION_END}
+};
+
+static Tk_OptionSpec slaveOptionSpecs[] = {
+ {TK_OPTION_WINDOW, "-after", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_AFTER, -1, Tk_Offset(Slave, after),
+ TK_OPTION_NULL_OK, 0, 0},
+ {TK_OPTION_WINDOW, "-before", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_BEFORE, -1, Tk_Offset(Slave, before),
+ TK_OPTION_NULL_OK, 0, 0},
+ {TK_OPTION_PIXELS, "-height", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_HEIGHT, Tk_Offset(Slave, heightPtr),
+ Tk_Offset(Slave, height), TK_OPTION_NULL_OK, 0, 0},
+ {TK_OPTION_PIXELS, "-minsize", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_MINSIZE, -1, Tk_Offset(Slave, minSize), 0, 0, 0},
+ {TK_OPTION_PIXELS, "-padx", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_PADX, -1, Tk_Offset(Slave, padx), 0, 0, 0},
+ {TK_OPTION_PIXELS, "-pady", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_PADY, -1, Tk_Offset(Slave, pady), 0, 0, 0},
+ {TK_OPTION_CUSTOM, "-sticky", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_STICKY, -1, Tk_Offset(Slave, sticky), 0,
+ (ClientData) &stickyOption, 0},
+ {TK_OPTION_PIXELS, "-width", (char *) NULL, (char *) NULL,
+ DEF_PANEDWINDOW_PANE_WIDTH, Tk_Offset(Slave, widthPtr),
+ Tk_Offset(Slave, width), TK_OPTION_NULL_OK, 0, 0},
+ {TK_OPTION_END}
+};
+
+
+/*
+ *--------------------------------------------------------------
+ *
+ * Tk_PanedWindowObjCmd --
+ *
+ * This procedure is invoked to process the "panedwindow" Tcl
+ * command. It creates a new "panedwindow" widget.
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * A new widget is created and configured.
+ *
+ *--------------------------------------------------------------
+ */
+
+int
+Tk_PanedWindowObjCmd(clientData, interp, objc, objv)
+ ClientData clientData; /* NULL. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int objc; /* Number of arguments. */
+ Tcl_Obj * CONST objv[]; /* Argument objects. */
+{
+ PanedWindow *pwPtr;
+ Tk_Window tkwin, parent;
+ OptionTables *pwOpts;
+
+ if (objc < 2) {
+ Tcl_WrongNumArgs(interp, 1, objv, "pathName ?options?");
+ return TCL_ERROR;
+ }
+
+ tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp),
+ Tcl_GetStringFromObj(objv[1], NULL), (char *) NULL);
+ if (tkwin == NULL) {
+ return TCL_ERROR;
+ }
+
+ pwOpts = (OptionTables *)
+ Tcl_GetAssocData(interp, "PanedWindowOptionTables", NULL);
+ if (pwOpts == NULL) {
+ /*
+ * The first time this procedure is invoked, the option tables will
+ * be NULL. We then create the option tables from the templates
+ * and store a pointer to the tables as the command's clinical so
+ * we'll have easy access to it in the future.
+ */
+ pwOpts = (OptionTables *) ckalloc(sizeof(OptionTables));
+ /* Set up an exit handler to free the optionTables struct */
+ Tcl_SetAssocData(interp, "PanedWindowOptionTables",
+ DestroyOptionTables, (ClientData) pwOpts);
+
+ /* Create the paned window option tables. */
+ pwOpts->pwOptions = Tk_CreateOptionTable(interp, optionSpecs);
+ pwOpts->slaveOpts = Tk_CreateOptionTable(interp, slaveOptionSpecs);
+ }
+
+ Tk_SetClass(tkwin, "PanedWindow");
+
+ /*
+ * Allocate and initialize the widget record.
+ */
+
+ pwPtr = (PanedWindow *) ckalloc(sizeof(PanedWindow));
+ memset((void *)pwPtr, 0, (sizeof(PanedWindow)));
+ pwPtr->tkwin = tkwin;
+ pwPtr->display = Tk_Display(tkwin);
+ pwPtr->interp = interp;
+ pwPtr->widgetCmd = Tcl_CreateObjCommand(interp,
+ Tk_PathName(pwPtr->tkwin), PanedWindowWidgetObjCmd,
+ (ClientData) pwPtr, PanedWindowCmdDeletedProc);
+ pwPtr->optionTable = pwOpts->pwOptions;
+ pwPtr->slaveOpts = pwOpts->slaveOpts;
+ pwPtr->relief = TK_RELIEF_RAISED;
+ pwPtr->gc = None;
+ pwPtr->cursor = None;
+ pwPtr->sashCursor = None;
+
+ if (Tk_InitOptions(interp, (char *) pwPtr, pwOpts->pwOptions,
+ tkwin) != TCL_OK) {
+ Tk_DestroyWindow(pwPtr->tkwin);
+ ckfree((char *) pwPtr);
+ return TCL_ERROR;
+ }
+
+ Tk_CreateEventHandler(pwPtr->tkwin, ExposureMask|StructureNotifyMask,
+ PanedWindowEventProc, (ClientData) pwPtr);
+
+ /*
+ * Find the toplevel ancestor of the panedwindow, and make a proxy
+ * win as a child of that window; this way the proxy can always float
+ * above slaves in the panedwindow.
+ */
+ parent = Tk_Parent(pwPtr->tkwin);
+ while (!(Tk_IsTopLevel(parent))) {
+ parent = Tk_Parent(parent);
+ if (parent == NULL) {
+ parent = pwPtr->tkwin;
+ break;
+ }
+ }
+
+ pwPtr->proxywin = Tk_CreateAnonymousWindow(interp, parent, (char *) NULL);
+ Tk_CreateEventHandler(pwPtr->proxywin, ExposureMask, ProxyWindowEventProc,
+ (ClientData) pwPtr);
+
+ if (ConfigurePanedWindow(interp, pwPtr, objc - 2, objv + 2) != TCL_OK) {
+ Tk_DestroyWindow(pwPtr->tkwin);
+ Tk_DestroyWindow(pwPtr->proxywin);
+ ckfree((char *) pwPtr);
+ return TCL_ERROR;
+ }
+
+ Tcl_SetStringObj(Tcl_GetObjResult(interp), Tk_PathName(pwPtr->tkwin), -1);
+ return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * PanedWindowWidgetObjCmd --
+ *
+ * This procedure is invoked to process the Tcl command
+ * that corresponds to a widget managed by this module.
+ * See the user documentation for details on what it does.
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * See the user documentation.
+ *
+ *--------------------------------------------------------------
+ */
+
+static int
+PanedWindowWidgetObjCmd(clientData, interp, objc, objv)
+ ClientData clientData; /* Information about square widget. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int objc; /* Number of arguments. */
+ Tcl_Obj * CONST objv[]; /* Argument objects. */
+{
+ PanedWindow *pwPtr = (PanedWindow *) clientData;
+ int result = TCL_OK;
+ static CONST char *optionStrings[] = {"add", "cget", "configure", "forget",
+ "identify", "panecget",
+ "paneconfigure", "panes",
+ "proxy", "sash", (char *) NULL};
+ enum options { PW_ADD, PW_CGET, PW_CONFIGURE, PW_FORGET, PW_IDENTIFY,
+ PW_PANECGET, PW_PANECONFIGURE, PW_PANES, PW_PROXY,
+ PW_SASH };
+ Tcl_Obj *resultObj;
+ int index, count, i, x, y;
+ Tk_Window tkwin;
+ Slave *slavePtr;
+
+ if (objc < 2) {
+ Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg...?");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "command",
+ 0, &index) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ Tcl_Preserve((ClientData) pwPtr);
+
+ switch ((enum options) index) {
+ case PW_ADD: {
+ if (objc < 3) {
+ Tcl_WrongNumArgs(interp, 2, objv, "widget ?widget ...?");
+ result = TCL_ERROR;
+ break;
+ }
+
+ return ConfigureSlaves(pwPtr, interp, objc, objv);
+ break;
+ }
+
+ case PW_CGET: {
+ if (objc != 3) {
+ Tcl_WrongNumArgs(interp, 2, objv, "option");
+ result = TCL_ERROR;
+ break;
+ }
+ resultObj = Tk_GetOptionValue(interp, (char *) pwPtr,
+ pwPtr->optionTable, objv[2], pwPtr->tkwin);
+ if (resultObj == NULL) {
+ result = TCL_ERROR;
+ } else {
+ Tcl_SetObjResult(interp, resultObj);
+ }
+ break;
+ }
+
+ case PW_CONFIGURE: {
+ resultObj = NULL;
+ if (objc <= 3) {
+ resultObj = Tk_GetOptionInfo(interp, (char *) pwPtr,
+ pwPtr->optionTable,
+ (objc == 3) ? objv[2] : (Tcl_Obj *) NULL,
+ pwPtr->tkwin);
+ if (resultObj == NULL) {
+ result = TCL_ERROR;
+ } else {
+ Tcl_SetObjResult(interp, resultObj);
+ }
+ } else {
+ result = ConfigurePanedWindow(interp, pwPtr, objc - 2,
+ objv + 2);
+ }
+ break;
+ }
+
+ case PW_FORGET: {
+ Tk_Window slave;
+ int i;
+
+ if (objc < 3) {
+ Tcl_WrongNumArgs(interp, 2, objv, "widget ?widget ...?");
+ return TCL_ERROR;
+ }
+
+ /*
+ * Clean up each window named in the arg list.
+ */
+ for (count = 0, i = 2; i < objc; i++) {
+ slave = Tk_NameToWindow(interp, Tcl_GetString(objv[i]),
+ pwPtr->tkwin);
+ if (slave == NULL) {
+ continue;
+ }
+ slavePtr = GetPane(pwPtr, slave);
+ if ((slavePtr != NULL) && (slavePtr->masterPtr != NULL)) {
+ count++;
+ Tk_ManageGeometry(slave, (Tk_GeomMgr *) NULL,
+ (ClientData) NULL);
+ Tk_UnmaintainGeometry(slavePtr->tkwin, pwPtr->tkwin);
+ Tk_DeleteEventHandler(slavePtr->tkwin, StructureNotifyMask,
+ SlaveStructureProc, (ClientData) slavePtr);
+ Tk_UnmapWindow(slavePtr->tkwin);
+ Unlink(slavePtr);
+ }
+ if (count != 0) {
+ ComputeGeometry(pwPtr);
+ }
+ }
+ break;
+ }
+
+ case PW_IDENTIFY: {
+ if (objc != 4) {
+ Tcl_WrongNumArgs(interp, 2, objv, "x y");
+ result = TCL_ERROR;
+ break;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[2], &x) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[3], &y) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ return PanedWindowIdentifyCoords(pwPtr, interp, x, y);
+ break;
+ }
+
+ case PW_PANECGET: {
+ if (objc != 4) {
+ Tcl_WrongNumArgs(interp, 2, objv, "pane option");
+ result = TCL_ERROR;
+ break;
+ }
+ tkwin = Tk_NameToWindow(interp, Tcl_GetString(objv[2]),
+ pwPtr->tkwin);
+ if (tkwin == NULL) {
+ result = TCL_ERROR;
+ break;
+ }
+ resultObj = NULL;
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ if (pwPtr->slaves[i]->tkwin == tkwin) {
+ resultObj = Tk_GetOptionValue(interp,
+ (char *) pwPtr->slaves[i], pwPtr->slaveOpts,
+ objv[3], tkwin);
+ }
+ }
+ if (i == pwPtr->numSlaves) {
+ Tcl_SetResult(interp, "not managed by this window",
+ TCL_STATIC);
+ }
+ if (resultObj == NULL) {
+ result = TCL_ERROR;
+ } else {
+ Tcl_SetObjResult(interp, resultObj);
+ }
+ break;
+ }
+
+ case PW_PANECONFIGURE: {
+ resultObj = NULL;
+ if (objc <= 4) {
+ tkwin = Tk_NameToWindow(interp, Tcl_GetString(objv[2]),
+ pwPtr->tkwin);
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ if (pwPtr->slaves[i]->tkwin == tkwin) {
+ resultObj = Tk_GetOptionInfo(interp,
+ (char *) pwPtr->slaves[i],
+ pwPtr->slaveOpts,
+ (objc == 4) ? objv[3] : (Tcl_Obj *) NULL,
+ pwPtr->tkwin);
+ if (resultObj == NULL) {
+ result = TCL_ERROR;
+ } else {
+ Tcl_SetObjResult(interp, resultObj);
+ }
+ break;
+ }
+ }
+ } else {
+ result = ConfigureSlaves(pwPtr, interp, objc, objv);
+ }
+ break;
+ }
+
+ case PW_PANES: {
+ resultObj = Tcl_NewObj();
+
+ Tcl_IncrRefCount(resultObj);
+
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ Tcl_ListObjAppendElement(interp, resultObj,
+ Tcl_NewStringObj(Tk_PathName(pwPtr->slaves[i]->tkwin),
+ -1));
+ }
+ Tcl_SetObjResult(interp, resultObj);
+ Tcl_DecrRefCount(resultObj);
+ break;
+ }
+
+ case PW_PROXY: {
+ return PanedWindowProxyCommand(pwPtr, interp, objc, objv);
+ break;
+ }
+
+ case PW_SASH: {
+ return PanedWindowSashCommand(pwPtr, interp, objc, objv);
+ break;
+ }
+ }
+ Tcl_Release((ClientData) pwPtr);
+ return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConfigureSlaves --
+ *
+ * Add or alter the configuration options of a slave in a paned
+ * window.
+ *
+ * Results:
+ * Standard Tcl result.
+ *
+ * Side effects:
+ * Depends on options; may add a slave to the paned window, may
+ * alter the geometry management options of a slave.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConfigureSlaves(pwPtr, interp, objc, objv)
+ PanedWindow *pwPtr; /* Information about paned window. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int objc; /* Number of arguments. */
+ Tcl_Obj * CONST objv[]; /* Argument objects. */
+{
+ int i, firstOptionArg, j, found, doubleBw, index, numNewSlaves, haveLoc;
+ int insertIndex;
+ Tk_Window tkwin = NULL, ancestor, parent;
+ Slave *slavePtr, **inserts, **new;
+ Slave options;
+ char *arg;
+
+ /*
+ * Find the non-window name arguments; these are the configure options
+ * for the slaves. Also validate that the window names given are
+ * legitimate (ie, they are real windows, they are not the panedwindow
+ * itself, etc.).
+ */
+ for (i = 2; i < objc; i++) {
+ arg = Tcl_GetString(objv[i]);
+ if (arg[0] == '-') {
+ break;
+ } else {
+ tkwin = Tk_NameToWindow(interp, arg, pwPtr->tkwin);
+ if (tkwin == NULL) {
+ /*
+ * Just a plain old bad window; Tk_NameToWindow filled in an
+ * error message for us.
+ */
+ return TCL_ERROR;
+ } else if (tkwin == pwPtr->tkwin) {
+ /*
+ * A panedwindow cannot manage itself.
+ */
+ Tcl_ResetResult(interp);
+ Tcl_AppendResult(interp, "can't add ", arg, " to itself",
+ (char *) NULL);
+ return TCL_ERROR;
+ } else if (Tk_IsTopLevel(tkwin)) {
+ /*
+ * A panedwindow cannot manage a toplevel.
+ */
+ Tcl_ResetResult(interp);
+ Tcl_AppendResult(interp, "can't add toplevel ", arg, " to ",
+ Tk_PathName(pwPtr->tkwin), (char *) NULL);
+ return TCL_ERROR;
+ } else {
+ /*
+ * Make sure the panedwindow is the parent of the slave,
+ * or a descendant of the slave's parent.
+ */
+ parent = Tk_Parent(tkwin);
+ for (ancestor = pwPtr->tkwin;;ancestor = Tk_Parent(ancestor)) {
+ if (ancestor == parent) {
+ break;
+ }
+ if (Tk_IsTopLevel(ancestor)) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendResult(interp, "can't add ", arg,
+ " to ", Tk_PathName(pwPtr->tkwin),
+ (char *) NULL);
+ return TCL_ERROR;
+ }
+ }
+ }
+ }
+ }
+ firstOptionArg = i;
+
+ /*
+ * Pre-parse the configuration options, to get the before/after specifiers
+ * into an easy-to-find location (a local variable). Also, check the
+ * return from Tk_SetOptions once, here, so we can save a little bit of
+ * extra testing in the for loop below.
+ */
+ memset((void *)&options, 0, sizeof(Slave));
+ if (Tk_SetOptions(interp, (char *) &options, pwPtr->slaveOpts,
+ objc - firstOptionArg, objv + firstOptionArg,
+ pwPtr->tkwin, NULL, NULL) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ /*
+ * If either -after or -before was given, find the numerical index that
+ * corresponds to the given window. If both -after and -before are
+ * given, the option precedence is: -after, then -before.
+ */
+ index = -1;
+ haveLoc = 0;
+ if (options.after != None) {
+ tkwin = options.after;
+ haveLoc = 1;
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ if (options.after == pwPtr->slaves[i]->tkwin) {
+ index = i + 1;
+ break;
+ }
+ }
+ } else if (options.before != None) {
+ tkwin = options.before;
+ haveLoc = 1;
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ if (options.before == pwPtr->slaves[i]->tkwin) {
+ index = i;
+ break;
+ }
+ }
+ }
+
+ /*
+ * If a window was given for -after/-before, but it's not a window
+ * managed by the panedwindow, throw an error
+ */
+ if (haveLoc && index == -1) {
+ Tcl_ResetResult(interp);
+ Tcl_AppendResult(interp, "window \"", Tk_PathName(tkwin),
+ "\" is not managed by ", Tk_PathName(pwPtr->tkwin),
+ (char *) NULL);
+ Tk_FreeConfigOptions((char *) &options, pwPtr->slaveOpts,
+ pwPtr->tkwin);
+ return TCL_ERROR;
+ }
+
+ /*
+ * Allocate an array to hold, in order, the pointers to the slave
+ * structures corresponding to the windows specified. Some of those
+ * structures may already have existed, some may be new.
+ */
+ inserts = (Slave **)ckalloc(sizeof(Slave *) * (firstOptionArg - 2));
+ insertIndex = 0;
+
+ /*
+ * Populate the inserts array, creating new slave structures as necessary,
+ * applying the options to each structure as we go, and, if necessary,
+ * marking the spot in the original slaves array as empty (for pre-existing
+ * slave structures).
+ */
+ for (i = 0, numNewSlaves = 0; i < firstOptionArg - 2; i++) {
+ /*
+ * We don't check that tkwin is NULL here, because the pre-pass above
+ * guarantees that the input at this stage is good.
+ */
+ tkwin = Tk_NameToWindow(interp, Tcl_GetString(objv[i + 2]),
+ pwPtr->tkwin);
+
+ found = 0;
+ for (j = 0; j < pwPtr->numSlaves; j++) {
+ if (pwPtr->slaves[j] != NULL && pwPtr->slaves[j]->tkwin == tkwin) {
+ Tk_SetOptions(interp, (char *) pwPtr->slaves[j],
+ pwPtr->slaveOpts, objc - firstOptionArg,
+ objv + firstOptionArg, pwPtr->tkwin, NULL, NULL);
+ found = 1;
+
+ /*
+ * If the slave is supposed to move, add it to the inserts
+ * array now; otherwise, leave it where it is.
+ */
+
+ if (index != -1) {
+ inserts[insertIndex++] = pwPtr->slaves[j];
+ pwPtr->slaves[j] = NULL;
+ }
+ break;
+ }
+ }
+
+ if (found) {
+ continue;
+ }
+
+ /*
+ * Make sure this slave wasn't already put into the inserts array,
+ * ie, when the user specifies the same window multiple times in
+ * a single add commaned.
+ */
+ for (j = 0; j < insertIndex; j++) {
+ if (inserts[j]->tkwin == tkwin) {
+ found = 1;
+ break;
+ }
+ }
+ if (found) {
+ continue;
+ }
+
+ /*
+ * Create a new slave structure and initialize it. All slaves
+ * start out with their "natural" dimensions.
+ */
+
+ slavePtr = (Slave *) ckalloc(sizeof(Slave));
+ memset(slavePtr, 0, sizeof(Slave));
+ Tk_InitOptions(interp, (char *)slavePtr, pwPtr->slaveOpts,
+ pwPtr->tkwin);
+ Tk_SetOptions(interp, (char *)slavePtr, pwPtr->slaveOpts,
+ objc - firstOptionArg, objv + firstOptionArg,
+ pwPtr->tkwin, NULL, NULL);
+ slavePtr->tkwin = tkwin;
+ slavePtr->masterPtr = pwPtr;
+ doubleBw = 2 * Tk_Changes(slavePtr->tkwin)->border_width;
+ if (slavePtr->width > 0) {
+ slavePtr->paneWidth = slavePtr->width;
+ } else {
+ slavePtr->paneWidth = Tk_ReqWidth(tkwin) + doubleBw;
+ }
+ if (slavePtr->height > 0) {
+ slavePtr->paneHeight = slavePtr->height;
+ } else {
+ slavePtr->paneHeight = Tk_ReqHeight(tkwin) + doubleBw;
+ }
+
+ /*
+ * Set up the geometry management callbacks for this slave.
+ */
+
+ Tk_CreateEventHandler(slavePtr->tkwin, StructureNotifyMask,
+ SlaveStructureProc, (ClientData) slavePtr);
+ Tk_ManageGeometry(slavePtr->tkwin, &panedWindowMgrType,
+ (ClientData) slavePtr);
+ inserts[insertIndex++] = slavePtr;
+ numNewSlaves++;
+ }
+
+ /*
+ * Allocate the new slaves array, then copy the slaves into it, in
+ * order.
+ */
+ new = (Slave **)ckalloc(sizeof(Slave *) * (pwPtr->numSlaves+numNewSlaves));
+ memset(new, 0, sizeof(Slave *) * (pwPtr->numSlaves + numNewSlaves));
+ if (index == -1) {
+ /*
+ * If none of the existing slaves have to be moved, just copy the old
+ * and append the new.
+ */
+ memcpy((void *)&(new[0]), pwPtr->slaves,
+ sizeof(Slave *) * pwPtr->numSlaves);
+ memcpy((void *)&(new[pwPtr->numSlaves]), inserts,
+ sizeof(Slave *) * numNewSlaves);
+ } else {
+ /*
+ * If some of the existing slaves were moved, the old slaves array
+ * will be partially populated, with some valid and some invalid
+ * entries. Walk through it, copying valid entries to the new slaves
+ * array as we go; when we get to the insert location for the new
+ * slaves, copy the inserts array over, then finish off the old slaves
+ * array.
+ */
+ for (i = 0, j = 0; i < index; i++) {
+ if (pwPtr->slaves[i] != NULL) {
+ new[j] = pwPtr->slaves[i];
+ j++;
+ }
+ }
+
+ memcpy((void *)&(new[j]), inserts, sizeof(Slave *) * (insertIndex));
+ j += firstOptionArg - 2;
+
+ for (i = index; i < pwPtr->numSlaves; i++) {
+ if (pwPtr->slaves[i] != NULL) {
+ new[j] = pwPtr->slaves[i];
+ j++;
+ }
+ }
+ }
+
+ /*
+ * Make the new slaves array the paned window's slave array, and clean up.
+ */
+ ckfree((void *)pwPtr->slaves);
+ ckfree((void *)inserts);
+ pwPtr->slaves = new;
+
+ /*
+ * Set the paned window's slave count to the new value.
+ */
+ pwPtr->numSlaves += numNewSlaves;
+
+ Tk_FreeConfigOptions((char *) &options, pwPtr->slaveOpts, pwPtr->tkwin);
+
+ ComputeGeometry(pwPtr);
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PanedWindowSashCommand --
+ *
+ * Implementation of the panedwindow sash subcommand. See the user
+ * documentation for details on what it does.
+ *
+ * Results:
+ * Standard Tcl result.
+ *
+ * Side effects:
+ * Depends on the arguments.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PanedWindowSashCommand(pwPtr, interp, objc, objv)
+ PanedWindow *pwPtr; /* Pointer to paned window information. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int objc; /* Number of arguments. */
+ Tcl_Obj * CONST objv[]; /* Argument objects. */
+{
+ static CONST char *sashOptionStrings[] = { "coord", "dragto", "mark",
+ "place", (char *) NULL };
+ enum sashOptions { SASH_COORD, SASH_DRAGTO, SASH_MARK, SASH_PLACE };
+ int index, sash, x, y, diff;
+ Tcl_Obj *coords[2];
+ Slave *slavePtr;
+
+ if (objc < 3) {
+ Tcl_WrongNumArgs(interp, 2, objv, "option ?arg ...?");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIndexFromObj(interp, objv[2], sashOptionStrings,
+ "option", 0, &index) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ Tcl_ResetResult(interp);
+ switch ((enum sashOptions) index) {
+ case SASH_COORD: {
+ if (objc != 4) {
+ Tcl_WrongNumArgs(interp, 3, objv, "index");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[3], &sash) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (sash >= pwPtr->numSlaves - 1) {
+ Tcl_ResetResult(interp);
+ Tcl_SetResult(interp, "invalid sash index", TCL_STATIC);
+ return TCL_ERROR;
+ }
+ slavePtr = pwPtr->slaves[sash];
+
+ coords[0] = Tcl_NewIntObj(slavePtr->sashx);
+ coords[1] = Tcl_NewIntObj(slavePtr->sashy);
+ Tcl_SetListObj(Tcl_GetObjResult(interp), 2, coords);
+ break;
+ }
+
+ case SASH_MARK: {
+ if (objc != 6 && objc != 4) {
+ Tcl_WrongNumArgs(interp, 3, objv, "index ?x y?");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[3], &sash) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (sash >= pwPtr->numSlaves - 1) {
+ Tcl_ResetResult(interp);
+ Tcl_SetResult(interp, "invalid sash index", TCL_STATIC);
+ return TCL_ERROR;
+ }
+
+ if (objc == 6) {
+ if (Tcl_GetIntFromObj(interp, objv[4], &x) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[5], &y) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ pwPtr->slaves[sash]->markx = x;
+ pwPtr->slaves[sash]->marky = y;
+ } else {
+ coords[0] = Tcl_NewIntObj(pwPtr->slaves[sash]->markx);
+ coords[1] = Tcl_NewIntObj(pwPtr->slaves[sash]->marky);
+ Tcl_SetListObj(Tcl_GetObjResult(interp), 2, coords);
+ }
+
+ break;
+ }
+
+ case SASH_DRAGTO:
+ case SASH_PLACE: {
+ if (objc != 6) {
+ Tcl_WrongNumArgs(interp, 3, objv, "index x y");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[3], &sash) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (sash >= pwPtr->numSlaves - 1) {
+ Tcl_ResetResult(interp);
+ Tcl_SetResult(interp, "invalid sash index", TCL_STATIC);
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[4], &x) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[5], &y) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ slavePtr = pwPtr->slaves[sash];
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ if (index == SASH_PLACE) {
+ diff = x - pwPtr->slaves[sash]->sashx;
+ } else {
+ diff = x - pwPtr->slaves[sash]->markx;
+ }
+ } else {
+ if (index == SASH_PLACE) {
+ diff = y - pwPtr->slaves[sash]->sashy;
+ } else {
+ diff = y - pwPtr->slaves[sash]->marky;
+ }
+ }
+
+ MoveSash(pwPtr, sash, diff);
+ ComputeGeometry(pwPtr);
+ }
+ }
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConfigurePanedWindow --
+ *
+ * This procedure is called to process an argv/argc list in
+ * conjunction with the Tk option database to configure (or
+ * reconfigure) a paned window widget.
+ *
+ * Results:
+ * The return value is a standard Tcl result. If TCL_ERROR is
+ * returned, then the interp's result contains an error message.
+ *
+ * Side effects:
+ * Configuration information, such as colors, border width,
+ * etc. get set for pwPtr; old resources get freed,
+ * if there were any.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConfigurePanedWindow(interp, pwPtr, objc, objv)
+ Tcl_Interp *interp; /* Used for error reporting. */
+ PanedWindow *pwPtr; /* Information about widget. */
+ int objc; /* Number of arguments. */
+ Tcl_Obj *CONST objv[]; /* Argument values. */
+{
+ Tk_SavedOptions savedOptions;
+ int typemask = 0;
+
+ if (Tk_SetOptions(interp, (char *) pwPtr, pwPtr->optionTable, objc, objv,
+ pwPtr->tkwin, &savedOptions, &typemask) != TCL_OK) {
+ Tk_RestoreSavedOptions(&savedOptions);
+ return TCL_ERROR;
+ }
+
+ Tk_FreeSavedOptions(&savedOptions);
+
+ PanedWindowWorldChanged((ClientData) pwPtr);
+
+ /*
+ * If an option that affects geometry has changed, make a relayout
+ * request.
+ */
+
+ if (typemask & GEOMETRY) {
+ ComputeGeometry(pwPtr);
+ }
+
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PanedWindowWorldChanged --
+ *
+ * This procedure is invoked anytime a paned window's world has
+ * changed in some way that causes the widget to have to recompute
+ * graphics contexts and geometry.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Paned window will be relayed out and redisplayed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+PanedWindowWorldChanged(instanceData)
+ ClientData instanceData; /* Information about the paned window. */
+{
+ XGCValues gcValues;
+ GC newGC;
+ PanedWindow *pwPtr = (PanedWindow *) instanceData;
+
+ /*
+ * Allocated a graphics context for drawing the paned window widget
+ * elements (background, sashes, etc.).
+ */
+
+ gcValues.background = Tk_3DBorderColor(pwPtr->background)->pixel;
+ newGC = Tk_GetGC(pwPtr->tkwin, GCBackground, &gcValues);
+ if (pwPtr->gc != None) {
+ Tk_FreeGC(pwPtr->display, pwPtr->gc);
+ }
+ pwPtr->gc = newGC;
+
+ /*
+ * Issue geometry size requests to Tk.
+ */
+
+ Tk_SetInternalBorder(pwPtr->tkwin, pwPtr->borderWidth);
+ if (pwPtr->width > 0 || pwPtr->height > 0) {
+ Tk_GeometryRequest(pwPtr->tkwin, pwPtr->width, pwPtr->height);
+ }
+
+ /*
+ * Arrange for the window to be redrawn, if neccessary.
+ */
+
+ if (Tk_IsMapped(pwPtr->tkwin) && !(pwPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(DisplayPanedWindow, (ClientData) pwPtr);
+ pwPtr->flags |= REDRAW_PENDING;
+ }
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * PanedWindowEventProc --
+ *
+ * This procedure is invoked by the Tk dispatcher for various
+ * events on paned windows.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * When the window gets deleted, internal structures get
+ * cleaned up. When it gets exposed, it is redisplayed.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+PanedWindowEventProc(clientData, eventPtr)
+ ClientData clientData; /* Information about window. */
+ XEvent *eventPtr; /* Information about event. */
+{
+ PanedWindow *pwPtr = (PanedWindow *) clientData;
+
+ if (eventPtr->type == Expose) {
+ if (pwPtr->tkwin != NULL && !(pwPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(DisplayPanedWindow, (ClientData) pwPtr);
+ pwPtr->flags |= REDRAW_PENDING;
+ }
+ } else if (eventPtr->type == ConfigureNotify) {
+ pwPtr->flags |= REQUESTED_RELAYOUT;
+ if (pwPtr->tkwin != NULL && !(pwPtr->flags & REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(DisplayPanedWindow, (ClientData) pwPtr);
+ pwPtr->flags |= REDRAW_PENDING;
+ }
+ } else if (eventPtr->type == DestroyNotify) {
+ DestroyPanedWindow(pwPtr);
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PanedWindowCmdDeletedProc --
+ *
+ * This procedure is invoked when a widget command is deleted. If
+ * the widget isn't already in the process of being destroyed,
+ * this command destroys it.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The widget is destroyed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+PanedWindowCmdDeletedProc(clientData)
+ ClientData clientData; /* Pointer to widget record for widget. */
+{
+ PanedWindow *pwPtr = (PanedWindow *) clientData;
+
+ /*
+ * This procedure could be invoked either because the window was
+ * destroyed and the command was then deleted or because the command was
+ * deleted, and then this procedure destroys the widget. The
+ * WIDGET_DELETED flag distinguishes these cases.
+ */
+
+ if (!(pwPtr->flags & WIDGET_DELETED)) {
+ Tk_DestroyWindow(pwPtr->tkwin);
+ Tk_DestroyWindow(pwPtr->proxywin);
+ }
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * DisplayPanedWindow --
+ *
+ * This procedure redraws the contents of a paned window widget.
+ * It is invoked as a do-when-idle handler, so it only runs
+ * when there's nothing else for the application to do.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Information appears on the screen.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+DisplayPanedWindow(clientData)
+ ClientData clientData; /* Information about window. */
+{
+ PanedWindow *pwPtr = (PanedWindow *) clientData;
+ Pixmap pixmap;
+ Tk_Window tkwin = pwPtr->tkwin;
+ int i, sashWidth, sashHeight;
+
+ pwPtr->flags &= ~REDRAW_PENDING;
+ if ((pwPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
+ return;
+ }
+
+ if (pwPtr->flags & REQUESTED_RELAYOUT) {
+ ArrangePanes(clientData);
+ }
+
+ /*
+ * Create a pixmap for double-buffering, if necessary.
+ */
+
+ pixmap = Tk_GetPixmap(Tk_Display(tkwin), Tk_WindowId(tkwin),
+ Tk_Width(tkwin), Tk_Height(tkwin),
+ DefaultDepthOfScreen(Tk_Screen(tkwin)));
+
+ /*
+ * Redraw the widget's background and border.
+ */
+ Tk_Fill3DRectangle(tkwin, pixmap, pwPtr->background, 0, 0,
+ Tk_Width(tkwin), Tk_Height(tkwin), pwPtr->borderWidth,
+ pwPtr->relief);
+
+ /*
+ * Set up boilerplate geometry values for sashes (width, height, common
+ * coordinates).
+ */
+
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ sashHeight = Tk_Height(tkwin) - (2 * Tk_InternalBorderWidth(tkwin));
+ sashWidth = pwPtr->sashWidth;
+ } else {
+ sashWidth = Tk_Width(tkwin) - (2 * Tk_InternalBorderWidth(tkwin));
+ sashHeight = pwPtr->sashWidth;
+ }
+
+ /*
+ * Draw the sashes.
+ */
+ for (i = 0; i < pwPtr->numSlaves - 1; i++) {
+ Tk_Fill3DRectangle(tkwin, pixmap, pwPtr->background,
+ pwPtr->slaves[i]->sashx, pwPtr->slaves[i]->sashy,
+ sashWidth, sashHeight, 1, pwPtr->sashRelief);
+
+ if (pwPtr->showHandle) {
+ Tk_Fill3DRectangle(tkwin, pixmap, pwPtr->background,
+ pwPtr->slaves[i]->handlex, pwPtr->slaves[i]->handley,
+ pwPtr->handleSize, pwPtr->handleSize, 1,
+ TK_RELIEF_RAISED);
+ }
+ }
+
+ /*
+ * Copy the information from the off-screen pixmap onto the screen,
+ * then delete the pixmap.
+ */
+
+ XCopyArea(Tk_Display(tkwin), pixmap, Tk_WindowId(tkwin), pwPtr->gc,
+ 0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin),
+ 0, 0);
+ Tk_FreePixmap(Tk_Display(tkwin), pixmap);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DestroyPanedWindow --
+ *
+ * This procedure is invoked by PanedWindowEventProc to free the
+ * internal structure of a paned window.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Everything associated with the paned window is freed up.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DestroyPanedWindow(pwPtr)
+ PanedWindow *pwPtr; /* Info about paned window widget. */
+{
+ int i;
+
+ /*
+ * First mark the widget as in the process of being deleted,
+ * so that any code that causes calls to other paned window procedures
+ * will abort.
+ */
+
+ pwPtr->flags |= WIDGET_DELETED;
+
+ /*
+ * Cancel idle callbacks for redrawing the widget and for rearranging
+ * the panes.
+ */
+ if (pwPtr->flags & REDRAW_PENDING) {
+ Tcl_CancelIdleCall(DisplayPanedWindow, (ClientData) pwPtr);
+ }
+
+ /*
+ * Clean up the slave list; foreach slave:
+ * o Cancel the slave's structure notification callback
+ * o Cancel geometry management for the slave.
+ * o Free memory for the slave
+ */
+
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ Tk_DeleteEventHandler(pwPtr->slaves[i]->tkwin, StructureNotifyMask,
+ SlaveStructureProc, (ClientData) pwPtr->slaves[i]);
+ Tk_ManageGeometry(pwPtr->slaves[i]->tkwin, NULL, NULL);
+ Tk_FreeConfigOptions((char *)pwPtr->slaves[i], pwPtr->slaveOpts,
+ pwPtr->tkwin);
+ ckfree((void *)pwPtr->slaves[i]);
+ pwPtr->slaves[i] = NULL;
+ }
+
+ /*
+ * Remove the widget command from the interpreter.
+ */
+
+ Tcl_DeleteCommandFromToken(pwPtr->interp, pwPtr->widgetCmd);
+
+ /*
+ * Let Tk_FreeConfigOptions clean up the rest.
+ */
+
+ Tk_FreeConfigOptions((char *) pwPtr, pwPtr->optionTable, pwPtr->tkwin);
+ pwPtr->tkwin = NULL;
+
+ Tcl_EventuallyFree((ClientData) pwPtr, TCL_DYNAMIC);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * PanedWindowReqProc --
+ *
+ * This procedure is invoked by Tk_GeometryRequest for
+ * windows managed by a paned window.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Arranges for tkwin, and all its managed siblings, to
+ * be re-arranged at the next idle point.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+PanedWindowReqProc(clientData, tkwin)
+ ClientData clientData; /* Paned window's information about
+ * window that got new preferred
+ * geometry. */
+ Tk_Window tkwin; /* Other Tk-related information
+ * about the window. */
+{
+ Slave *panePtr = (Slave *) clientData;
+ PanedWindow *pwPtr = (PanedWindow *) (panePtr->masterPtr);
+ ComputeGeometry(pwPtr);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * PanedWindowLostSlaveProc --
+ *
+ * This procedure 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 information about the slave. Causes geometry to
+ * be recomputed for the panedwindow.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+PanedWindowLostSlaveProc(clientData, tkwin)
+ ClientData clientData; /* Grid structure for slave window that
+ * was stolen away. */
+ Tk_Window tkwin; /* Tk's handle for the slave window. */
+{
+ register Slave *slavePtr = (Slave *) clientData;
+ PanedWindow *pwPtr = (PanedWindow *) (slavePtr->masterPtr);
+ if (pwPtr->tkwin != Tk_Parent(slavePtr->tkwin)) {
+ Tk_UnmaintainGeometry(slavePtr->tkwin, pwPtr->tkwin);
+ }
+ Unlink(slavePtr);
+ Tk_DeleteEventHandler(slavePtr->tkwin, StructureNotifyMask,
+ SlaveStructureProc, (ClientData) slavePtr);
+ Tk_UnmapWindow(slavePtr->tkwin);
+ slavePtr->tkwin = NULL;
+ ckfree((void *)slavePtr);
+ ComputeGeometry(pwPtr);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ArrangePanes --
+ *
+ * This procedure is invoked (using the Tcl_DoWhenIdle
+ * mechanism) to re-layout a set of windows managed by
+ * a paned window. It is invoked at idle time so that a
+ * series of pane requests can be merged into a single
+ * layout operation.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The slaves of masterPtr may get resized or moved.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+ArrangePanes(clientData)
+ ClientData clientData; /* Structure describing parent whose slaves
+ * are to be re-layed out. */
+{
+ register PanedWindow *pwPtr = (PanedWindow *) clientData;
+ register Slave *slavePtr;
+ int i, slaveWidth, slaveHeight, slaveX, slaveY, paneWidth, paneHeight;
+ int doubleBw;
+
+ pwPtr->flags &= ~REQUESTED_RELAYOUT;
+
+ /*
+ * If the parent has no slaves anymore, then don't do anything
+ * at all: just leave the parent's size as-is. Otherwise there is
+ * no way to "relinquish" control over the parent so another geometry
+ * manager can take over.
+ */
+
+ if (pwPtr->numSlaves == 0) {
+ return;
+ }
+
+ Tcl_Preserve((ClientData) pwPtr);
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ slavePtr = pwPtr->slaves[i];
+
+ /*
+ * Compute the size of this slave. The algorithm (assuming a
+ * horizontal paned window) is:
+ *
+ * 1. Get "base" dimensions. If a width or height is specified
+ * for this slave, use those values; else use the
+ * ReqWidth/ReqHeight.
+ * 2. Using base dimensions, pane dimensions, and sticky values,
+ * determine the x and y, and actual width and height of the
+ * widget.
+ */
+
+ doubleBw = 2 * Tk_Changes(slavePtr->tkwin)->border_width;
+ slaveWidth = (slavePtr->width > 0 ? slavePtr->width :
+ Tk_ReqWidth(slavePtr->tkwin) + doubleBw);
+ slaveHeight = (slavePtr->height > 0 ? slavePtr->height :
+ Tk_ReqHeight(slavePtr->tkwin) + doubleBw);
+
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ paneWidth = slavePtr->paneWidth;
+ if (i == pwPtr->numSlaves - 1 && Tk_IsMapped(pwPtr->tkwin)) {
+ if (Tk_Width(pwPtr->tkwin) > Tk_ReqWidth(pwPtr->tkwin)) {
+ paneWidth += Tk_Width(pwPtr->tkwin) -
+ Tk_ReqWidth(pwPtr->tkwin) -
+ Tk_InternalBorderWidth(pwPtr->tkwin);
+ }
+ }
+ paneHeight = Tk_Height(pwPtr->tkwin) - (2 * slavePtr->pady) -
+ (2 * Tk_InternalBorderWidth(pwPtr->tkwin));
+ } else {
+ paneHeight = slavePtr->paneHeight;
+ if (i == pwPtr->numSlaves - 1 && Tk_IsMapped(pwPtr->tkwin)) {
+ if (Tk_Height(pwPtr->tkwin) > Tk_ReqHeight(pwPtr->tkwin)) {
+ paneHeight += Tk_Height(pwPtr->tkwin) -
+ Tk_ReqHeight(pwPtr->tkwin) -
+ Tk_InternalBorderWidth(pwPtr->tkwin);
+ }
+ }
+ paneWidth = Tk_Width(pwPtr->tkwin) - (2 * slavePtr->padx) -
+ (2 * Tk_InternalBorderWidth(pwPtr->tkwin));
+ }
+
+ if (slaveWidth > paneWidth) {
+ slaveWidth = paneWidth;
+ }
+ if (slaveHeight > paneHeight) {
+ slaveHeight = paneHeight;
+ }
+
+ slaveX = slavePtr->x;
+ slaveY = slavePtr->y;
+ AdjustForSticky(slavePtr->sticky, paneWidth, paneHeight,
+ &slaveX, &slaveY, &slaveWidth, &slaveHeight);
+
+ slaveX += slavePtr->padx;
+ slaveY += slavePtr->pady;
+
+ /*
+ * Now put the window in the proper spot.
+ */
+ if ((slaveWidth <= 0) || (slaveHeight <= 0)) {
+ Tk_UnmaintainGeometry(slavePtr->tkwin, pwPtr->tkwin);
+ Tk_UnmapWindow(slavePtr->tkwin);
+ } else {
+ Tk_MaintainGeometry(slavePtr->tkwin, pwPtr->tkwin,
+ slaveX, slaveY, slaveWidth, slaveHeight);
+ }
+ }
+ Tcl_Release((ClientData) pwPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Unlink --
+ *
+ * Remove a slave from a paned window.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The paned window will be scheduled for re-arranging and redrawing.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+Unlink(slavePtr)
+ register Slave *slavePtr; /* Window to unlink. */
+{
+ register PanedWindow *masterPtr;
+ int i, j;
+
+ masterPtr = slavePtr->masterPtr;
+ if (masterPtr == NULL) {
+ return;
+ }
+
+ /*
+ * Find the specified slave in the panedwindow's list of slaves, then
+ * remove it from that list.
+ */
+
+ for (i = 0; i < masterPtr->numSlaves; i++) {
+ if (masterPtr->slaves[i] == slavePtr) {
+ for (j = i; j < masterPtr->numSlaves - 1; j++) {
+ masterPtr->slaves[j] = masterPtr->slaves[j + 1];
+ }
+ break;
+ }
+ }
+
+ masterPtr->flags |= REQUESTED_RELAYOUT;
+ if (!(masterPtr->flags & REDRAW_PENDING)) {
+ masterPtr->flags |= REDRAW_PENDING;
+ Tcl_DoWhenIdle(DisplayPanedWindow, (ClientData) masterPtr);
+ }
+
+ /*
+ * Set the slave's masterPtr to NULL, so that we can tell that the
+ * slave is no longer attached to any panedwindow.
+ */
+ slavePtr->masterPtr = NULL;
+
+ masterPtr->numSlaves--;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetPane --
+ *
+ * Given a token to a Tk window, find the pane that corresponds to
+ * that token in a given paned window.
+ *
+ * Results:
+ * Pointer to the slave structure, or NULL if the window is not
+ * managed by this paned window.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Slave *
+GetPane(pwPtr, tkwin)
+ PanedWindow *pwPtr; /* Pointer to the paned window info. */
+ Tk_Window tkwin; /* Window to search for. */
+{
+ int i;
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ if (pwPtr->slaves[i]->tkwin == tkwin) {
+ return pwPtr->slaves[i];
+ }
+ }
+ return NULL;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * SlaveStructureProc --
+ *
+ * This procedure is invoked whenever StructureNotify events
+ * occur for a window that's managed by a paned window. This
+ * procedure's only purpose is to clean up when windows are
+ * deleted.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The paned window slave structure associated with the window
+ * is freed, and the slave is disassociated from the paned
+ * window which managed it.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+SlaveStructureProc(clientData, eventPtr)
+ ClientData clientData; /* Pointer to record describing window item. */
+ XEvent *eventPtr; /* Describes what just happened. */
+{
+ Slave *slavePtr = (Slave *) clientData;
+ PanedWindow *pwPtr = slavePtr->masterPtr;
+
+ if (eventPtr->type == DestroyNotify) {
+ Unlink(slavePtr);
+ slavePtr->tkwin = NULL;
+ ckfree((void *)slavePtr);
+ ComputeGeometry(pwPtr);
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ComputeGeometry --
+ *
+ * Compute geometry for the paned window, including coordinates of
+ * all slave windows and each sash.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Recomputes geometry information for a paned window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ComputeGeometry(pwPtr)
+ PanedWindow *pwPtr; /* Pointer to the Paned Window structure. */
+{
+ int i, x, y, doubleBw, internalBw;
+ int reqWidth, reqHeight, sashWidth, sxOff, syOff, hxOff, hyOff, dim;
+ Slave *slavePtr;
+
+ pwPtr->flags |= REQUESTED_RELAYOUT;
+
+ x = y = internalBw = Tk_InternalBorderWidth(pwPtr->tkwin);
+ reqWidth = reqHeight = 0;
+
+ /*
+ * Sashes and handles share space on the display. To simplify
+ * processing below, precompute the x and y offsets of the handles and
+ * sashes within the space occupied by their combination; later, just add
+ * those offsets blindly (avoiding the extra showHandle, etc, checks).
+ */
+ sxOff = syOff = hxOff = hyOff = 0;
+ if (pwPtr->showHandle && pwPtr->handleSize > pwPtr->sashWidth) {
+ sashWidth = pwPtr->handleSize;
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ sxOff = (pwPtr->handleSize - pwPtr->sashWidth) / 2;
+ hyOff = pwPtr->handlePad;
+ } else {
+ syOff = (pwPtr->handleSize - pwPtr->sashWidth) / 2;
+ hxOff = pwPtr->handlePad;
+ }
+ } else {
+ sashWidth = pwPtr->sashWidth;
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ hxOff = (pwPtr->handleSize - pwPtr->sashWidth) / 2;
+ hyOff = pwPtr->handlePad;
+ } else {
+ hyOff = (pwPtr->handleSize - pwPtr->sashWidth) / 2;
+ hxOff = pwPtr->handlePad;
+ }
+ }
+
+ for (i = 0; i < pwPtr->numSlaves; i++) {
+ slavePtr = pwPtr->slaves[i];
+ /*
+ * First set the coordinates for the top left corner of the slave's
+ * parcel.
+ */
+ slavePtr->x = x;
+ slavePtr->y = y;
+
+ /*
+ * Make sure the pane's paned dimension is at least minsize.
+ * This check may be redundant, since the only way to change a pane's
+ * size is by moving a sash, and that code checks the minsize.
+ */
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ if (slavePtr->paneWidth < slavePtr->minSize) {
+ slavePtr->paneWidth = slavePtr->minSize;
+ }
+ } else {
+ if (slavePtr->paneHeight < slavePtr->minSize) {
+ slavePtr->paneHeight = slavePtr->minSize;
+ }
+ }
+
+ /*
+ * Compute the location of the sash at the right or bottom of the
+ * parcel.
+ */
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ x += slavePtr->paneWidth + (2 * slavePtr->padx) + pwPtr->sashPad;
+ } else {
+ y += slavePtr->paneHeight + (2 * slavePtr->pady) + pwPtr->sashPad;
+ }
+ slavePtr->sashx = x + sxOff;
+ slavePtr->sashy = y + syOff;
+ slavePtr->handlex = x + hxOff;
+ slavePtr->handley = y + hyOff;
+
+ /*
+ * Compute the location of the next parcel.
+ */
+
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ x += sashWidth + pwPtr->sashPad;
+ } else {
+ y += sashWidth + pwPtr->sashPad;
+ }
+
+ /*
+ * Find the maximum height/width of the slaves, for computing the
+ * requested height/width of the paned window.
+ */
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ /*
+ * If the slave has an explicit height set, use that; otherwise,
+ * use the slave's requested height.
+ */
+ if (slavePtr->height > 0) {
+ dim = slavePtr->height;
+ } else {
+ doubleBw = (2 * Tk_Changes(slavePtr->tkwin)->border_width);
+ dim = Tk_ReqHeight(slavePtr->tkwin) + doubleBw;
+ }
+ dim += (2 * slavePtr->pady);
+ if (dim > reqHeight) {
+ reqHeight = dim;
+ }
+ } else {
+ /*
+ * If the slave has an explicit width set use that; otherwise,
+ * use the slave's requested width.
+ */
+ if (slavePtr->width > 0) {
+ dim = slavePtr->width;
+ } else {
+ doubleBw = (2 * Tk_Changes(slavePtr->tkwin)->border_width);
+ dim = Tk_ReqWidth(slavePtr->tkwin) + doubleBw;
+ }
+ dim += (2 * slavePtr->padx);
+ if (dim > reqWidth) {
+ reqWidth = dim;
+ }
+ }
+ }
+
+ /*
+ * The loop above should have left x (or y) equal to the sum of the
+ * widths (or heights) of the widgets, plus the size of one sash and
+ * the sash padding for each widget, plus the width of the left (or top)
+ * border of the paned window.
+ *
+ * The requested width (or height) is therefore x (or y) minus the size of
+ * one sash and padding, plus the width of the right (or bottom) border
+ * of the paned window.
+ *
+ * The height (or width) is equal to the maximum height (or width) of
+ * the slaves, plus the width of the border of the top and bottom (or left
+ * and right) of the paned window.
+ */
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ reqWidth = x - (sashWidth + (2 * pwPtr->sashPad)) + internalBw;
+ reqHeight += 2 * internalBw;
+ } else {
+ reqHeight = y - (sashWidth + (2 * pwPtr->sashPad)) + internalBw;
+ reqWidth += 2 * internalBw;
+ }
+ if (pwPtr->width <= 0 && pwPtr->height <= 0) {
+ Tk_GeometryRequest(pwPtr->tkwin, reqWidth, reqHeight);
+ }
+ if (Tk_IsMapped(pwPtr->tkwin) && !(pwPtr->flags & REDRAW_PENDING)) {
+ pwPtr->flags |= REDRAW_PENDING;
+ Tcl_DoWhenIdle(DisplayPanedWindow, (ClientData) pwPtr);
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DestroyOptionTables --
+ *
+ * This procedure is registered as an exit callback when the paned window
+ * command is first called. It cleans up the OptionTables structure
+ * allocated by that command.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Frees memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DestroyOptionTables(clientData, interp)
+ ClientData clientData; /* Pointer to the OptionTables struct */
+ Tcl_Interp *interp; /* Pointer to the calling interp */
+{
+ ckfree((char *)clientData);
+ return;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetSticky -
+ *
+ * Converts an internal boolean combination of "sticky" bits into a
+ * a Tcl string obj containing zero or mor of n, s, e, or w.
+ *
+ * Results:
+ * Tcl_Obj containing the string representation of the sticky value.
+ *
+ * Side effects:
+ * Creates a new Tcl_Obj.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj *
+GetSticky(clientData, tkwin, recordPtr, internalOffset)
+ ClientData clientData;
+ Tk_Window tkwin;
+ char *recordPtr; /* Pointer to widget record. */
+ int internalOffset; /* Offset within *recordPtr containing the
+ * sticky value. */
+{
+ int sticky = *(int *)(recordPtr + internalOffset);
+ static char buffer[5];
+ int count = 0;
+
+ if (sticky & STICK_NORTH) {
+ buffer[count++] = 'n';
+ }
+ if (sticky & STICK_EAST) {
+ buffer[count++] = 'e';
+ }
+ if (sticky & STICK_SOUTH) {
+ buffer[count++] = 's';
+ }
+ if (sticky & STICK_WEST) {
+ buffer[count++] = 'w';
+ }
+ buffer[count] = '\0';
+
+ return Tcl_NewStringObj(buffer, -1);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetSticky --
+ *
+ * Converts a Tcl_Obj representing a widgets stickyness into an
+ * integer value.
+ *
+ * Results:
+ * Standard Tcl result.
+ *
+ * Side effects:
+ * May store the integer value into the internal representation
+ * pointer. May change the pointer to the Tcl_Obj to NULL to indicate
+ * that the specified string was empty and that is acceptable.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SetSticky(clientData, interp, tkwin, value, recordPtr, internalOffset,
+ oldInternalPtr, flags)
+ ClientData clientData;
+ Tcl_Interp *interp; /* Current interp; may be used for errors. */
+ Tk_Window tkwin; /* Window for which option is being set. */
+ Tcl_Obj **value; /* Pointer to the pointer to the value object.
+ * We use a pointer to the pointer because
+ * we may need to return a value (NULL). */
+ char *recordPtr; /* Pointer to storage for the widget record. */
+ int internalOffset; /* Offset within *recordPtr at which the
+ internal value is to be stored. */
+ char *oldInternalPtr; /* Pointer to storage for the old value. */
+ int flags; /* Flags for the option, set Tk_SetOptions. */
+{
+ int sticky = 0;
+ char c, *string, *internalPtr;
+
+ internalPtr = ComputeSlotAddress(recordPtr, internalOffset);
+
+ if (flags & TK_OPTION_NULL_OK && ObjectIsEmpty(*value)) {
+ *value = NULL;
+ } else {
+ /*
+ * Convert the sticky specifier into an integer value.
+ */
+
+ string = Tcl_GetString(*value);
+
+ while ((c = *string++) != '\0') {
+ switch (c) {
+ case 'n': case 'N': sticky |= STICK_NORTH; break;
+ case 'e': case 'E': sticky |= STICK_EAST; break;
+ case 's': case 'S': sticky |= STICK_SOUTH; break;
+ case 'w': case 'W': sticky |= STICK_WEST; break;
+ case ' ': case ',': case '\t': case '\r': case '\n': break;
+ default: {
+ Tcl_ResetResult(interp);
+ Tcl_AppendResult(interp, "bad stickyness value \"",
+ Tcl_GetString(*value), "\": must be a string ",
+ "containing zero or more of n, e, s, and w",
+ (char *)NULL);
+ return TCL_ERROR;
+ }
+ }
+ }
+ }
+
+ if (internalPtr != NULL) {
+ *((int *) oldInternalPtr) = *((int *) internalPtr);
+ *((int *) internalPtr) = sticky;
+ }
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * RestoreSticky --
+ *
+ * Restore a sticky option value from a saved value.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Restores the old value.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+RestoreSticky(clientData, tkwin, internalPtr, oldInternalPtr)
+ ClientData clientData;
+ Tk_Window tkwin;
+ char *internalPtr; /* Pointer to storage for value. */
+ char *oldInternalPtr; /* Pointer to old value. */
+{
+ *(int *)internalPtr = *(int *)oldInternalPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AdjustForSticky --
+ *
+ * Given the x,y coords of the top-left corner of a pane, the
+ * dimensions of that pane, and the dimensions of a slave, compute
+ * the x,y coords and actual dimensions of the slave based on the slave's
+ * sticky value.
+ *
+ * Results:
+ * No direct return; sets the x, y, slaveWidth and slaveHeight to
+ * correct values.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AdjustForSticky(sticky, cavityWidth, cavityHeight, xPtr, yPtr,
+ slaveWidthPtr, slaveHeightPtr)
+ int sticky; /* Sticky value; see top of file for definition. */
+ int cavityWidth; /* Width of the cavity. */
+ int cavityHeight; /* Height of the cavity. */
+ int *xPtr, *yPtr; /* Initially, coordinates of the top-left
+ * corner of cavity; also return values for
+ * actual x, y coords of slave. */
+ int *slaveWidthPtr; /* Slave width. */
+ int *slaveHeightPtr; /* Slave height. */
+{
+ int diffx=0; /* Cavity width - slave width. */
+ int diffy=0; /* Cavity hight - slave height. */
+
+ if (cavityWidth > *slaveWidthPtr) {
+ diffx = cavityWidth - *slaveWidthPtr;
+ }
+
+ if (cavityHeight > *slaveHeightPtr) {
+ diffy = cavityHeight - *slaveHeightPtr;
+ }
+
+ if ((sticky & STICK_EAST) && (sticky & STICK_WEST)) {
+ *slaveWidthPtr += diffx;
+ }
+ if ((sticky & STICK_NORTH) && (sticky & STICK_SOUTH)) {
+ *slaveHeightPtr += diffy;
+ }
+ if (!(sticky & STICK_WEST)) {
+ *xPtr += (sticky & STICK_EAST) ? diffx : diffx/2;
+ }
+ if (!(sticky & STICK_NORTH)) {
+ *yPtr += (sticky & STICK_SOUTH) ? diffy : diffy/2;
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * MoveSash --
+ *
+ * Move the sash given by index the amount given.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Recomputes the sizes of the panes in a panedwindow.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+MoveSash(pwPtr, sash, diff)
+ PanedWindow *pwPtr;
+ int sash;
+ int diff;
+{
+ int diffConsumed = 0, i, extra, maxCoord, currCoord;
+ int *lengthPtr, newLength;
+ Slave *slave;
+
+ if (diff > 0) {
+ /*
+ * Growing the pane, at the expense of panes to the right.
+ */
+
+
+ /*
+ * First check that moving the sash the requested distance will not
+ * leave it off the screen. If necessary, clip the requested diff
+ * to the maximum possible while remaining visible.
+ */
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ if (Tk_IsMapped(pwPtr->tkwin)) {
+ maxCoord = Tk_Width(pwPtr->tkwin);
+ } else {
+ maxCoord = Tk_ReqWidth(pwPtr->tkwin);
+ }
+ extra = Tk_Width(pwPtr->tkwin) - Tk_ReqWidth(pwPtr->tkwin);
+ currCoord = pwPtr->slaves[sash]->sashx;
+ } else {
+ if (Tk_IsMapped(pwPtr->tkwin)) {
+ maxCoord = Tk_Height(pwPtr->tkwin);
+ } else {
+ maxCoord = Tk_ReqHeight(pwPtr->tkwin);
+ }
+ extra = Tk_Height(pwPtr->tkwin) - Tk_ReqHeight(pwPtr->tkwin);
+ currCoord = pwPtr->slaves[sash]->sashy;
+ }
+
+ maxCoord -= (pwPtr->borderWidth + pwPtr->sashWidth + pwPtr->sashPad);
+ if (currCoord + diff >= maxCoord) {
+ diff = maxCoord - currCoord;
+ }
+
+ for (i = sash + 1; i < pwPtr->numSlaves; i++) {
+ if (diffConsumed == diff) {
+ break;
+ }
+ slave = pwPtr->slaves[i];
+
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ lengthPtr = &(slave->paneWidth);
+ } else {
+ lengthPtr = &(slave->paneHeight);
+ }
+
+ /*
+ * Remove as much space from this pane as possible (constrained
+ * by the minsize value and the visible dimensions of the window).
+ */
+
+ if (i == pwPtr->numSlaves - 1 && extra > 0) {
+ /*
+ * The last pane may have some additional "virtual" space,
+ * if the width (or height) of the paned window is bigger
+ * than the requested width (or height).
+ *
+ * That extra space is not included in the paneWidth
+ * (or paneHeight) value, so we have to handle the last
+ * pane specially.
+ */
+ newLength = (*lengthPtr + extra) - (diff - diffConsumed);
+ if (newLength < slave->minSize) {
+ newLength = slave->minSize;
+ }
+ if (newLength < 0) {
+ newLength = 0;
+ }
+ diffConsumed += (*lengthPtr + extra) - newLength;
+ if (newLength < *lengthPtr) {
+ *lengthPtr = newLength;
+ }
+ } else {
+ newLength = *lengthPtr - (diff - diffConsumed);
+ if (newLength < slave->minSize) {
+ newLength = slave->minSize;
+ }
+ if (newLength < 0) {
+ newLength = 0;
+ }
+ diffConsumed += *lengthPtr - newLength;
+ *lengthPtr = newLength;
+ }
+ }
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ pwPtr->slaves[sash]->paneWidth += diffConsumed;
+ } else {
+ pwPtr->slaves[sash]->paneHeight += diffConsumed;
+ }
+ } else if (diff < 0) {
+ /*
+ * Shrinking the pane; additional space is given to the pane to the
+ * right.
+ */
+ for (i = sash; i >= 0; i--) {
+ if (diffConsumed == diff) {
+ break;
+ }
+ /*
+ * Remove as much space from this pane as possible.
+ */
+ slave = pwPtr->slaves[i];
+
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ lengthPtr = &(slave->paneWidth);
+ } else {
+ lengthPtr = &(slave->paneHeight);
+ }
+
+ newLength = *lengthPtr + (diff - diffConsumed);
+ if (newLength < slave->minSize) {
+ newLength = slave->minSize;
+ }
+ if (newLength < 0) {
+ newLength = 0;
+ }
+ diffConsumed -= *lengthPtr - newLength;
+ *lengthPtr = newLength;
+ }
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ pwPtr->slaves[sash + 1]->paneWidth -= diffConsumed;
+ } else {
+ pwPtr->slaves[sash + 1]->paneHeight -= diffConsumed;
+ }
+ }
+
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ProxyWindowEventProc --
+ *
+ * This procedure is invoked by the Tk dispatcher for various
+ * events on paned window proxy windows.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * When the window gets deleted, internal structures get
+ * cleaned up. When it gets exposed, it is redisplayed.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+ProxyWindowEventProc(clientData, eventPtr)
+ ClientData clientData; /* Information about window. */
+ XEvent *eventPtr; /* Information about event. */
+{
+ PanedWindow *pwPtr = (PanedWindow *) clientData;
+
+ if (eventPtr->type == Expose) {
+ if (pwPtr->proxywin != NULL &&!(pwPtr->flags & PROXY_REDRAW_PENDING)) {
+ Tcl_DoWhenIdle(DisplayProxyWindow, (ClientData) pwPtr);
+ pwPtr->flags |= PROXY_REDRAW_PENDING;
+ }
+ }
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * DisplayProxyWindow --
+ *
+ * This procedure redraws a paned window proxy window.
+ * It is invoked as a do-when-idle handler, so it only runs
+ * when there's nothing else for the application to do.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Information appears on the screen.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+DisplayProxyWindow(clientData)
+ ClientData clientData; /* Information about window. */
+{
+ PanedWindow *pwPtr = (PanedWindow *) clientData;
+ Pixmap pixmap;
+ Tk_Window tkwin = pwPtr->proxywin;
+ pwPtr->flags &= ~PROXY_REDRAW_PENDING;
+ if ((tkwin == NULL) || !Tk_IsMapped(tkwin)) {
+ return;
+ }
+
+ /*
+ * Create a pixmap for double-buffering, if necessary.
+ */
+
+ pixmap = Tk_GetPixmap(Tk_Display(tkwin), Tk_WindowId(tkwin),
+ Tk_Width(tkwin), Tk_Height(tkwin),
+ DefaultDepthOfScreen(Tk_Screen(tkwin)));
+
+ /*
+ * Redraw the widget's background and border.
+ */
+ Tk_Fill3DRectangle(tkwin, pixmap, pwPtr->background, 0, 0,
+ Tk_Width(tkwin), Tk_Height(tkwin), 2, pwPtr->sashRelief);
+
+ /*
+ * Copy the pixmap to the display.
+ */
+ XCopyArea(Tk_Display(tkwin), pixmap, Tk_WindowId(tkwin), pwPtr->gc,
+ 0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin),
+ 0, 0);
+ Tk_FreePixmap(Tk_Display(tkwin), pixmap);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PanedWindowProxyCommand --
+ *
+ * Handles the panedwindow proxy subcommand. See the user
+ * documentation for details.
+ *
+ * Results:
+ * Standard Tcl result.
+ *
+ * Side effects:
+ * May map or unmap the proxy sash.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PanedWindowProxyCommand(pwPtr, interp, objc, objv)
+ PanedWindow *pwPtr; /* Pointer to paned window information. */
+ Tcl_Interp *interp; /* Current interpreter. */
+ int objc; /* Number of arguments. */
+ Tcl_Obj * CONST objv[]; /* Argument objects. */
+{
+ static CONST char *optionStrings[] = { "coord", "forget", "place",
+ (char *) NULL };
+ enum options { PROXY_COORD, PROXY_FORGET, PROXY_PLACE };
+ int index, x, y, sashWidth, sashHeight;
+ Tcl_Obj *coords[2];
+
+ if (objc < 3) {
+ Tcl_WrongNumArgs(interp, 2, objv, "option ?arg ...?");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIndexFromObj(interp, objv[2], optionStrings, "option", 0,
+ &index) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ switch ((enum options) index) {
+ case PROXY_COORD:
+ if (objc != 3) {
+ Tcl_WrongNumArgs(interp, 3, objv, NULL);
+ return TCL_ERROR;
+ }
+
+ coords[0] = Tcl_NewIntObj(pwPtr->proxyx);
+ coords[1] = Tcl_NewIntObj(pwPtr->proxyy);
+ Tcl_SetListObj(Tcl_GetObjResult(interp), 2, coords);
+ break;
+
+ case PROXY_FORGET:
+ if (objc != 3) {
+ Tcl_WrongNumArgs(interp, 3, objv, NULL);
+ return TCL_ERROR;
+ }
+ if (Tk_IsMapped(pwPtr->proxywin)) {
+ Tk_UnmapWindow(pwPtr->proxywin);
+ Tk_UnmaintainGeometry(pwPtr->proxywin, pwPtr->tkwin);
+ }
+ break;
+
+ case PROXY_PLACE: {
+ if (objc != 5) {
+ Tcl_WrongNumArgs(interp, 3, objv, "x y");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[3], &x) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIntFromObj(interp, objv[4], &y) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ if (x < 0) {
+ x = 0;
+ }
+ y = Tk_InternalBorderWidth(pwPtr->tkwin);
+ sashWidth = pwPtr->sashWidth;
+ sashHeight = Tk_Height(pwPtr->tkwin) -
+ (2 * Tk_InternalBorderWidth(pwPtr->tkwin));
+ } else {
+ if (y < 0) {
+ y = 0;
+ }
+ x = Tk_InternalBorderWidth(pwPtr->tkwin);
+ sashHeight = pwPtr->sashWidth;
+ sashWidth = Tk_Width(pwPtr->tkwin) -
+ (2 * Tk_InternalBorderWidth(pwPtr->tkwin));
+ }
+
+ /*
+ * Stash the proxy coordinates for future "proxy coord" calls.
+ */
+
+ pwPtr->proxyx = x;
+ pwPtr->proxyy = y;
+
+ /*
+ * Make sure the proxy window is higher in the stacking order
+ * than the slaves, so that it will be visible when drawn.
+ * It would be more correct to push the proxy window just high
+ * enough to appear above the highest slave, but it's much easier
+ * to just force it all the way to the top of the stacking order.
+ */
+
+ Tk_RestackWindow(pwPtr->proxywin, Above, NULL);
+
+ /*
+ * Let Tk_MaintainGeometry take care of placing the window at
+ * the right coordinates.
+ */
+ Tk_MaintainGeometry(pwPtr->proxywin, pwPtr->tkwin,
+ x, y, sashWidth, sashHeight);
+ break;
+ }
+ }
+
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ObjectIsEmpty --
+ *
+ * This procedure tests whether the string value of an object is
+ * empty.
+ *
+ * Results:
+ * The return value is 1 if the string value of objPtr has length
+ * zero, and 0 otherwise.
+ *
+ * Side effects:
+ * May cause object shimmering, since this function can force a
+ * conversion to a string object.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ObjectIsEmpty(objPtr)
+ Tcl_Obj *objPtr; /* Object to test. May be NULL. */
+{
+ int length;
+
+ if (objPtr == NULL) {
+ return 1;
+ }
+ if (objPtr->bytes != NULL) {
+ return (objPtr->length == 0);
+ }
+ Tcl_GetStringFromObj(objPtr, &length);
+ return (length == 0);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ComputeInternalPointer --
+ *
+ * Given a pointer to the start of a record and the offset of a slot
+ * within that record, compute the address of that slot.
+ *
+ * Results:
+ * If offset is non-negative, returns the computed address; else,
+ * returns NULL.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static char *
+ComputeSlotAddress(recordPtr, offset)
+ char *recordPtr; /* Pointer to the start of a record. */
+ int offset; /* Offset of a slot within that record; may be < 0. */
+{
+ if (offset >= 0) {
+ return recordPtr + offset;
+ } else {
+ return NULL;
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PanedWindowIdentifyCoords --
+ *
+ * Given a pair of x,y coordinates, identify the panedwindow component
+ * at that point, if any.
+ *
+ * Results:
+ * Standard Tcl result.
+ *
+ * Side effects:
+ * Modifies the interpreter's result to contain either an empty list,
+ * or a two element list of the form {sash n} or {handle n} to indicate
+ * that the point lies within the n'th sash or handle.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PanedWindowIdentifyCoords(pwPtr, interp, x, y)
+ PanedWindow *pwPtr; /* Information about the widget. */
+ Tcl_Interp *interp; /* Interpreter in which to store result. */
+ int x, y; /* Coordinates of the point to identify. */
+{
+ Tcl_Obj *list;
+ int i, sashHeight, sashWidth, thisx, thisy;
+ int found, isHandle, lpad, rpad, tpad, bpad;
+ list = Tcl_NewObj();
+
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ if (Tk_IsMapped(pwPtr->tkwin)) {
+ sashHeight = Tk_Height(pwPtr->tkwin);
+ } else {
+ sashHeight = Tk_ReqHeight(pwPtr->tkwin);
+ }
+ sashHeight -= 2 * Tk_InternalBorderWidth(pwPtr->tkwin);
+ if (pwPtr->showHandle && pwPtr->handleSize > pwPtr->sashWidth) {
+ sashWidth = pwPtr->handleSize;
+ lpad = (pwPtr->handleSize - pwPtr->sashWidth) / 2;
+ rpad = pwPtr->handleSize - lpad;
+ lpad += pwPtr->sashPad;
+ rpad += pwPtr->sashPad;
+ } else {
+ sashWidth = pwPtr->sashWidth;
+ lpad = rpad = pwPtr->sashPad;
+ }
+ tpad = bpad = 0;
+ } else {
+ if (pwPtr->showHandle && pwPtr->handleSize > pwPtr->sashWidth) {
+ sashHeight = pwPtr->handleSize;
+ tpad = (pwPtr->handleSize - pwPtr->sashWidth) / 2;
+ bpad = pwPtr->handleSize - tpad;
+ tpad += pwPtr->sashPad;
+ bpad += pwPtr->sashPad;
+ } else {
+ sashHeight = pwPtr->sashWidth;
+ tpad = bpad = pwPtr->sashPad;
+ }
+ if (Tk_IsMapped(pwPtr->tkwin)) {
+ sashWidth = Tk_Width(pwPtr->tkwin);
+ } else {
+ sashWidth = Tk_ReqWidth(pwPtr->tkwin);
+ }
+ sashWidth -= 2 * Tk_InternalBorderWidth(pwPtr->tkwin);
+ lpad = rpad = 0;
+ }
+
+ isHandle = 0;
+ found = -1;
+ for (i = 0; i < pwPtr->numSlaves - 1; i++) {
+ thisx = pwPtr->slaves[i]->sashx;
+ thisy = pwPtr->slaves[i]->sashy;
+
+ if (((thisx - lpad) <= x && x <= (thisx + rpad + sashWidth)) &&
+ ((thisy - tpad) <= y && y <= (thisy + bpad + sashHeight))) {
+ found = i;
+
+ /*
+ * Determine if the point is over the handle or the sash.
+ */
+ if (pwPtr->showHandle) {
+ thisx = pwPtr->slaves[i]->handlex;
+ thisy = pwPtr->slaves[i]->handley;
+ if (pwPtr->orient == ORIENT_HORIZONTAL) {
+ if (thisy <= y && y <= (thisy + pwPtr->handleSize)) {
+ isHandle = 1;
+ }
+ } else {
+ if (thisx <= x && x <= (thisx + pwPtr->handleSize)) {
+ isHandle = 1;
+ }
+ }
+ }
+ break;
+ }
+ }
+
+ /*
+ * Set results.
+ */
+ if (found != -1) {
+ Tcl_ListObjAppendElement(interp, list, Tcl_NewIntObj(found));
+ if (isHandle) {
+ Tcl_ListObjAppendElement(interp, list,
+ Tcl_NewStringObj("handle", -1));
+ } else {
+ Tcl_ListObjAppendElement(interp, list,
+ Tcl_NewStringObj("sash", -1));
+ }
+ }
+
+ Tcl_SetObjResult(interp, list);
+ return TCL_OK;
+}