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diff --git a/generic/tkCanvWind.c b/generic/tkCanvWind.c
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+/*
+ * tkCanvWind.c --
+ *
+ * This file implements window items for canvas widgets.
+ *
+ * Copyright (c) 1992-1994 The Regents of the University of California.
+ * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tkCanvWind.c 1.29 97/10/14 10:40:54
+ */
+
+#include <stdio.h>
+#include "tkInt.h"
+#include "tkPort.h"
+#include "tkCanvas.h"
+
+/*
+ * The structure below defines the record for each window item.
+ */
+
+typedef struct WindowItem {
+ Tk_Item header; /* Generic stuff that's the same for all
+ * types. MUST BE FIRST IN STRUCTURE. */
+ double x, y; /* Coordinates of positioning point for
+ * window. */
+ Tk_Window tkwin; /* Window associated with item. NULL means
+ * window has been destroyed. */
+ int width; /* Width to use for window (<= 0 means use
+ * window's requested width). */
+ int height; /* Width to use for window (<= 0 means use
+ * window's requested width). */
+ Tk_Anchor anchor; /* Where to anchor window relative to
+ * (x,y). */
+ Tk_Canvas canvas; /* Canvas containing this item. */
+} WindowItem;
+
+/*
+ * Information used for parsing configuration specs:
+ */
+
+static Tk_CustomOption tagsOption = {Tk_CanvasTagsParseProc,
+ Tk_CanvasTagsPrintProc, (ClientData) NULL
+};
+
+static Tk_ConfigSpec configSpecs[] = {
+ {TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
+ "center", Tk_Offset(WindowItem, anchor), TK_CONFIG_DONT_SET_DEFAULT},
+ {TK_CONFIG_PIXELS, "-height", (char *) NULL, (char *) NULL,
+ "0", Tk_Offset(WindowItem, height), TK_CONFIG_DONT_SET_DEFAULT},
+ {TK_CONFIG_CUSTOM, "-tags", (char *) NULL, (char *) NULL,
+ (char *) NULL, 0, TK_CONFIG_NULL_OK, &tagsOption},
+ {TK_CONFIG_PIXELS, "-width", (char *) NULL, (char *) NULL,
+ "0", Tk_Offset(WindowItem, width), TK_CONFIG_DONT_SET_DEFAULT},
+ {TK_CONFIG_WINDOW, "-window", (char *) NULL, (char *) NULL,
+ (char *) NULL, Tk_Offset(WindowItem, tkwin), TK_CONFIG_NULL_OK},
+ {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
+ (char *) NULL, 0, 0}
+};
+
+/*
+ * Prototypes for procedures defined in this file:
+ */
+
+static void ComputeWindowBbox _ANSI_ARGS_((Tk_Canvas canvas,
+ WindowItem *winItemPtr));
+static int ConfigureWinItem _ANSI_ARGS_((Tcl_Interp *interp,
+ Tk_Canvas canvas, Tk_Item *itemPtr, int argc,
+ char **argv, int flags));
+static int CreateWinItem _ANSI_ARGS_((Tcl_Interp *interp,
+ Tk_Canvas canvas, struct Tk_Item *itemPtr,
+ int argc, char **argv));
+static void DeleteWinItem _ANSI_ARGS_((Tk_Canvas canvas,
+ Tk_Item *itemPtr, Display *display));
+static void DisplayWinItem _ANSI_ARGS_((Tk_Canvas canvas,
+ Tk_Item *itemPtr, Display *display, Drawable dst,
+ int x, int y, int width, int height));
+static void ScaleWinItem _ANSI_ARGS_((Tk_Canvas canvas,
+ Tk_Item *itemPtr, double originX, double originY,
+ double scaleX, double scaleY));
+static void TranslateWinItem _ANSI_ARGS_((Tk_Canvas canvas,
+ Tk_Item *itemPtr, double deltaX, double deltaY));
+static int WinItemCoords _ANSI_ARGS_((Tcl_Interp *interp,
+ Tk_Canvas canvas, Tk_Item *itemPtr, int argc,
+ char **argv));
+static void WinItemLostSlaveProc _ANSI_ARGS_((
+ ClientData clientData, Tk_Window tkwin));
+static void WinItemRequestProc _ANSI_ARGS_((ClientData clientData,
+ Tk_Window tkwin));
+static void WinItemStructureProc _ANSI_ARGS_((
+ ClientData clientData, XEvent *eventPtr));
+static int WinItemToArea _ANSI_ARGS_((Tk_Canvas canvas,
+ Tk_Item *itemPtr, double *rectPtr));
+static double WinItemToPoint _ANSI_ARGS_((Tk_Canvas canvas,
+ Tk_Item *itemPtr, double *pointPtr));
+
+/*
+ * The structure below defines the window item type by means of procedures
+ * that can be invoked by generic item code.
+ */
+
+Tk_ItemType tkWindowType = {
+ "window", /* name */
+ sizeof(WindowItem), /* itemSize */
+ CreateWinItem, /* createProc */
+ configSpecs, /* configSpecs */
+ ConfigureWinItem, /* configureProc */
+ WinItemCoords, /* coordProc */
+ DeleteWinItem, /* deleteProc */
+ DisplayWinItem, /* displayProc */
+ 1, /* alwaysRedraw */
+ WinItemToPoint, /* pointProc */
+ WinItemToArea, /* areaProc */
+ (Tk_ItemPostscriptProc *) NULL, /* postscriptProc */
+ ScaleWinItem, /* scaleProc */
+ TranslateWinItem, /* translateProc */
+ (Tk_ItemIndexProc *) NULL, /* indexProc */
+ (Tk_ItemCursorProc *) NULL, /* cursorProc */
+ (Tk_ItemSelectionProc *) NULL, /* selectionProc */
+ (Tk_ItemInsertProc *) NULL, /* insertProc */
+ (Tk_ItemDCharsProc *) NULL, /* dTextProc */
+ (Tk_ItemType *) NULL /* nextPtr */
+};
+
+
+/*
+ * The structure below defines the official type record for the
+ * placer:
+ */
+
+static Tk_GeomMgr canvasGeomType = {
+ "canvas", /* name */
+ WinItemRequestProc, /* requestProc */
+ WinItemLostSlaveProc, /* lostSlaveProc */
+};
+
+/*
+ *--------------------------------------------------------------
+ *
+ * CreateWinItem --
+ *
+ * This procedure is invoked to create a new window
+ * item in a canvas.
+ *
+ * Results:
+ * A standard Tcl return value. If an error occurred in
+ * creating the item, then an error message is left in
+ * interp->result; in this case itemPtr is
+ * left uninitialized, so it can be safely freed by the
+ * caller.
+ *
+ * Side effects:
+ * A new window item is created.
+ *
+ *--------------------------------------------------------------
+ */
+
+static int
+CreateWinItem(interp, canvas, itemPtr, argc, argv)
+ Tcl_Interp *interp; /* Interpreter for error reporting. */
+ Tk_Canvas canvas; /* Canvas to hold new item. */
+ Tk_Item *itemPtr; /* Record to hold new item; header
+ * has been initialized by caller. */
+ int argc; /* Number of arguments in argv. */
+ char **argv; /* Arguments describing rectangle. */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+
+ if (argc < 2) {
+ Tcl_AppendResult(interp, "wrong # args: should be \"",
+ Tk_PathName(Tk_CanvasTkwin(canvas)), " create ",
+ itemPtr->typePtr->name, " x y ?options?\"",
+ (char *) NULL);
+ return TCL_ERROR;
+ }
+
+ /*
+ * Initialize item's record.
+ */
+
+ winItemPtr->tkwin = NULL;
+ winItemPtr->width = 0;
+ winItemPtr->height = 0;
+ winItemPtr->anchor = TK_ANCHOR_CENTER;
+ winItemPtr->canvas = canvas;
+
+ /*
+ * Process the arguments to fill in the item record.
+ */
+
+ if ((Tk_CanvasGetCoord(interp, canvas, argv[0], &winItemPtr->x) != TCL_OK)
+ || (Tk_CanvasGetCoord(interp, canvas, argv[1],
+ &winItemPtr->y) != TCL_OK)) {
+ return TCL_ERROR;
+ }
+
+ if (ConfigureWinItem(interp, canvas, itemPtr, argc-2, argv+2, 0)
+ != TCL_OK) {
+ DeleteWinItem(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas)));
+ return TCL_ERROR;
+ }
+ return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * WinItemCoords --
+ *
+ * This procedure is invoked to process the "coords" widget
+ * command on window items. See the user documentation for
+ * details on what it does.
+ *
+ * Results:
+ * Returns TCL_OK or TCL_ERROR, and sets interp->result.
+ *
+ * Side effects:
+ * The coordinates for the given item may be changed.
+ *
+ *--------------------------------------------------------------
+ */
+
+static int
+WinItemCoords(interp, canvas, itemPtr, argc, argv)
+ Tcl_Interp *interp; /* Used for error reporting. */
+ Tk_Canvas canvas; /* Canvas containing item. */
+ Tk_Item *itemPtr; /* Item whose coordinates are to be
+ * read or modified. */
+ int argc; /* Number of coordinates supplied in
+ * argv. */
+ char **argv; /* Array of coordinates: x1, y1,
+ * x2, y2, ... */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+ char x[TCL_DOUBLE_SPACE], y[TCL_DOUBLE_SPACE];
+
+ if (argc == 0) {
+ Tcl_PrintDouble(interp, winItemPtr->x, x);
+ Tcl_PrintDouble(interp, winItemPtr->y, y);
+ Tcl_AppendResult(interp, x, " ", y, (char *) NULL);
+ } else if (argc == 2) {
+ if ((Tk_CanvasGetCoord(interp, canvas, argv[0], &winItemPtr->x)
+ != TCL_OK) || (Tk_CanvasGetCoord(interp, canvas, argv[1],
+ &winItemPtr->y) != TCL_OK)) {
+ return TCL_ERROR;
+ }
+ ComputeWindowBbox(canvas, winItemPtr);
+ } else {
+ sprintf(interp->result,
+ "wrong # coordinates: expected 0 or 2, got %d", argc);
+ return TCL_ERROR;
+ }
+ return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ConfigureWinItem --
+ *
+ * This procedure is invoked to configure various aspects
+ * of a window item, such as its anchor position.
+ *
+ * Results:
+ * A standard Tcl result code. If an error occurs, then
+ * an error message is left in interp->result.
+ *
+ * Side effects:
+ * Configuration information may be set for itemPtr.
+ *
+ *--------------------------------------------------------------
+ */
+
+static int
+ConfigureWinItem(interp, canvas, itemPtr, argc, argv, flags)
+ Tcl_Interp *interp; /* Used for error reporting. */
+ Tk_Canvas canvas; /* Canvas containing itemPtr. */
+ Tk_Item *itemPtr; /* Window item to reconfigure. */
+ int argc; /* Number of elements in argv. */
+ char **argv; /* Arguments describing things to configure. */
+ int flags; /* Flags to pass to Tk_ConfigureWidget. */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+ Tk_Window oldWindow;
+ Tk_Window canvasTkwin;
+
+ oldWindow = winItemPtr->tkwin;
+ canvasTkwin = Tk_CanvasTkwin(canvas);
+ if (Tk_ConfigureWidget(interp, canvasTkwin, configSpecs, argc, argv,
+ (char *) winItemPtr, flags) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ /*
+ * A few of the options require additional processing.
+ */
+
+ if (oldWindow != winItemPtr->tkwin) {
+ if (oldWindow != NULL) {
+ Tk_DeleteEventHandler(oldWindow, StructureNotifyMask,
+ WinItemStructureProc, (ClientData) winItemPtr);
+ Tk_ManageGeometry(oldWindow, (Tk_GeomMgr *) NULL,
+ (ClientData) NULL);
+ Tk_UnmaintainGeometry(oldWindow, canvasTkwin);
+ Tk_UnmapWindow(oldWindow);
+ }
+ if (winItemPtr->tkwin != NULL) {
+ Tk_Window ancestor, parent;
+
+ /*
+ * Make sure that the canvas is either the parent of the
+ * window associated with the item or a descendant of that
+ * parent. Also, don't allow a top-level window to be
+ * managed inside a canvas.
+ */
+
+ parent = Tk_Parent(winItemPtr->tkwin);
+ for (ancestor = canvasTkwin; ;
+ ancestor = Tk_Parent(ancestor)) {
+ if (ancestor == parent) {
+ break;
+ }
+ if (((Tk_FakeWin *) (ancestor))->flags & TK_TOP_LEVEL) {
+ badWindow:
+ Tcl_AppendResult(interp, "can't use ",
+ Tk_PathName(winItemPtr->tkwin),
+ " in a window item of this canvas", (char *) NULL);
+ winItemPtr->tkwin = NULL;
+ return TCL_ERROR;
+ }
+ }
+ if (((Tk_FakeWin *) (winItemPtr->tkwin))->flags & TK_TOP_LEVEL) {
+ goto badWindow;
+ }
+ if (winItemPtr->tkwin == canvasTkwin) {
+ goto badWindow;
+ }
+ Tk_CreateEventHandler(winItemPtr->tkwin, StructureNotifyMask,
+ WinItemStructureProc, (ClientData) winItemPtr);
+ Tk_ManageGeometry(winItemPtr->tkwin, &canvasGeomType,
+ (ClientData) winItemPtr);
+ }
+ }
+
+ ComputeWindowBbox(canvas, winItemPtr);
+
+ return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * DeleteWinItem --
+ *
+ * This procedure is called to clean up the data structure
+ * associated with a window item.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Resources associated with itemPtr are released.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+DeleteWinItem(canvas, itemPtr, display)
+ Tk_Canvas canvas; /* Overall info about widget. */
+ Tk_Item *itemPtr; /* Item that is being deleted. */
+ Display *display; /* Display containing window for
+ * canvas. */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+ Tk_Window canvasTkwin = Tk_CanvasTkwin(canvas);
+
+ if (winItemPtr->tkwin != NULL) {
+ Tk_DeleteEventHandler(winItemPtr->tkwin, StructureNotifyMask,
+ WinItemStructureProc, (ClientData) winItemPtr);
+ Tk_ManageGeometry(winItemPtr->tkwin, (Tk_GeomMgr *) NULL,
+ (ClientData) NULL);
+ if (canvasTkwin != Tk_Parent(winItemPtr->tkwin)) {
+ Tk_UnmaintainGeometry(winItemPtr->tkwin, canvasTkwin);
+ }
+ Tk_UnmapWindow(winItemPtr->tkwin);
+ }
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ComputeWindowBbox --
+ *
+ * This procedure is invoked to compute the bounding box of
+ * all the pixels that may be drawn as part of a window item.
+ * This procedure is where the child window's placement is
+ * computed.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The fields x1, y1, x2, and y2 are updated in the header
+ * for itemPtr.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+ComputeWindowBbox(canvas, winItemPtr)
+ Tk_Canvas canvas; /* Canvas that contains item. */
+ WindowItem *winItemPtr; /* Item whose bbox is to be
+ * recomputed. */
+{
+ int width, height, x, y;
+
+ x = (int) (winItemPtr->x + ((winItemPtr->x >= 0) ? 0.5 : - 0.5));
+ y = (int) (winItemPtr->y + ((winItemPtr->y >= 0) ? 0.5 : - 0.5));
+
+ if (winItemPtr->tkwin == NULL) {
+ /*
+ * There is no window for this item yet. Just give it a 1x1
+ * bounding box. Don't give it a 0x0 bounding box; there are
+ * strange cases where this bounding box might be used as the
+ * dimensions of the window, and 0x0 causes problems under X.
+ */
+
+ winItemPtr->header.x1 = x;
+ winItemPtr->header.x2 = winItemPtr->header.x1 + 1;
+ winItemPtr->header.y1 = y;
+ winItemPtr->header.y2 = winItemPtr->header.y1 + 1;
+ return;
+ }
+
+ /*
+ * Compute dimensions of window.
+ */
+
+ width = winItemPtr->width;
+ if (width <= 0) {
+ width = Tk_ReqWidth(winItemPtr->tkwin);
+ if (width <= 0) {
+ width = 1;
+ }
+ }
+ height = winItemPtr->height;
+ if (height <= 0) {
+ height = Tk_ReqHeight(winItemPtr->tkwin);
+ if (height <= 0) {
+ height = 1;
+ }
+ }
+
+ /*
+ * Compute location of window, using anchor information.
+ */
+
+ switch (winItemPtr->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;
+ }
+
+ /*
+ * Store the information in the item header.
+ */
+
+ winItemPtr->header.x1 = x;
+ winItemPtr->header.y1 = y;
+ winItemPtr->header.x2 = x + width;
+ winItemPtr->header.y2 = y + height;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * DisplayWinItem --
+ *
+ * This procedure is invoked to "draw" a window item in a given
+ * drawable. Since the window draws itself, we needn't do any
+ * actual redisplay here. However, this procedure takes care
+ * of actually repositioning the child window so that it occupies
+ * the correct screen position.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The child window's position may get changed. Note: this
+ * procedure gets called both when a window needs to be displayed
+ * and when it ceases to be visible on the screen (e.g. it was
+ * scrolled or moved off-screen or the enclosing canvas is
+ * unmapped).
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+DisplayWinItem(canvas, itemPtr, display, drawable, regionX, regionY,
+ regionWidth, regionHeight)
+ Tk_Canvas canvas; /* Canvas that contains item. */
+ Tk_Item *itemPtr; /* Item to be displayed. */
+ Display *display; /* Display on which to draw item. */
+ Drawable drawable; /* Pixmap or window in which to draw
+ * item. */
+ int regionX, regionY, regionWidth, regionHeight;
+ /* Describes region of canvas that
+ * must be redisplayed (not used). */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+ int width, height;
+ short x, y;
+ Tk_Window canvasTkwin = Tk_CanvasTkwin(canvas);
+
+ if (winItemPtr->tkwin == NULL) {
+ return;
+ }
+
+ Tk_CanvasWindowCoords(canvas, (double) winItemPtr->header.x1,
+ (double) winItemPtr->header.y1, &x, &y);
+ width = winItemPtr->header.x2 - winItemPtr->header.x1;
+ height = winItemPtr->header.y2 - winItemPtr->header.y1;
+
+ /*
+ * If the window is completely out of the visible area of the canvas
+ * then unmap it. This code used not to be present (why unmap the
+ * window if it isn't visible anyway?) but this could cause the
+ * window to suddenly reappear if the canvas window got resized.
+ */
+
+ if (((x + width) <= 0) || ((y + height) <= 0)
+ || (x >= Tk_Width(canvasTkwin)) || (y >= Tk_Height(canvasTkwin))) {
+ if (canvasTkwin == Tk_Parent(winItemPtr->tkwin)) {
+ Tk_UnmapWindow(winItemPtr->tkwin);
+ } else {
+ Tk_UnmaintainGeometry(winItemPtr->tkwin, canvasTkwin);
+ }
+ return;
+ }
+
+ /*
+ * Reposition and map the window (but in different ways depending
+ * on whether the canvas is the window's parent).
+ */
+
+ if (canvasTkwin == Tk_Parent(winItemPtr->tkwin)) {
+ if ((x != Tk_X(winItemPtr->tkwin)) || (y != Tk_Y(winItemPtr->tkwin))
+ || (width != Tk_Width(winItemPtr->tkwin))
+ || (height != Tk_Height(winItemPtr->tkwin))) {
+ Tk_MoveResizeWindow(winItemPtr->tkwin, x, y, width, height);
+ }
+ Tk_MapWindow(winItemPtr->tkwin);
+ } else {
+ Tk_MaintainGeometry(winItemPtr->tkwin, canvasTkwin, x, y,
+ width, height);
+ }
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * WinItemToPoint --
+ *
+ * Computes the distance from a given point to a given
+ * rectangle, in canvas units.
+ *
+ * Results:
+ * The return value is 0 if the point whose x and y coordinates
+ * are coordPtr[0] and coordPtr[1] is inside the window. If the
+ * point isn't inside the window then the return value is the
+ * distance from the point to the window.
+ *
+ * Side effects:
+ * None.
+ *
+ *--------------------------------------------------------------
+ */
+
+static double
+WinItemToPoint(canvas, itemPtr, pointPtr)
+ Tk_Canvas canvas; /* Canvas containing item. */
+ Tk_Item *itemPtr; /* Item to check against point. */
+ double *pointPtr; /* Pointer to x and y coordinates. */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+ double x1, x2, y1, y2, xDiff, yDiff;
+
+ x1 = winItemPtr->header.x1;
+ y1 = winItemPtr->header.y1;
+ x2 = winItemPtr->header.x2;
+ y2 = winItemPtr->header.y2;
+
+ /*
+ * Point is outside rectangle.
+ */
+
+ if (pointPtr[0] < x1) {
+ xDiff = x1 - pointPtr[0];
+ } else if (pointPtr[0] >= x2) {
+ xDiff = pointPtr[0] + 1 - x2;
+ } else {
+ xDiff = 0;
+ }
+
+ if (pointPtr[1] < y1) {
+ yDiff = y1 - pointPtr[1];
+ } else if (pointPtr[1] >= y2) {
+ yDiff = pointPtr[1] + 1 - y2;
+ } else {
+ yDiff = 0;
+ }
+
+ return hypot(xDiff, yDiff);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * WinItemToArea --
+ *
+ * This procedure is called to determine whether an item
+ * lies entirely inside, entirely outside, or overlapping
+ * a given rectangle.
+ *
+ * Results:
+ * -1 is returned if the item is entirely outside the area
+ * given by rectPtr, 0 if it overlaps, and 1 if it is entirely
+ * inside the given area.
+ *
+ * Side effects:
+ * None.
+ *
+ *--------------------------------------------------------------
+ */
+
+static int
+WinItemToArea(canvas, itemPtr, rectPtr)
+ Tk_Canvas canvas; /* Canvas containing item. */
+ Tk_Item *itemPtr; /* Item to check against rectangle. */
+ double *rectPtr; /* Pointer to array of four coordinates
+ * (x1, y1, x2, y2) describing rectangular
+ * area. */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+
+ if ((rectPtr[2] <= winItemPtr->header.x1)
+ || (rectPtr[0] >= winItemPtr->header.x2)
+ || (rectPtr[3] <= winItemPtr->header.y1)
+ || (rectPtr[1] >= winItemPtr->header.y2)) {
+ return -1;
+ }
+ if ((rectPtr[0] <= winItemPtr->header.x1)
+ && (rectPtr[1] <= winItemPtr->header.y1)
+ && (rectPtr[2] >= winItemPtr->header.x2)
+ && (rectPtr[3] >= winItemPtr->header.y2)) {
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * ScaleWinItem --
+ *
+ * This procedure is invoked to rescale a rectangle or oval
+ * item.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The rectangle or oval referred to by itemPtr is rescaled
+ * so that the following transformation is applied to all
+ * point coordinates:
+ * x' = originX + scaleX*(x-originX)
+ * y' = originY + scaleY*(y-originY)
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+ScaleWinItem(canvas, itemPtr, originX, originY, scaleX, scaleY)
+ Tk_Canvas canvas; /* Canvas containing rectangle. */
+ Tk_Item *itemPtr; /* Rectangle to be scaled. */
+ double originX, originY; /* Origin about which to scale rect. */
+ double scaleX; /* Amount to scale in X direction. */
+ double scaleY; /* Amount to scale in Y direction. */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+
+ winItemPtr->x = originX + scaleX*(winItemPtr->x - originX);
+ winItemPtr->y = originY + scaleY*(winItemPtr->y - originY);
+ if (winItemPtr->width > 0) {
+ winItemPtr->width = (int) (scaleX*winItemPtr->width);
+ }
+ if (winItemPtr->height > 0) {
+ winItemPtr->height = (int) (scaleY*winItemPtr->height);
+ }
+ ComputeWindowBbox(canvas, winItemPtr);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * TranslateWinItem --
+ *
+ * This procedure is called to move a rectangle or oval by a
+ * given amount.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The position of the rectangle or oval is offset by
+ * (xDelta, yDelta), and the bounding box is updated in the
+ * generic part of the item structure.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+TranslateWinItem(canvas, itemPtr, deltaX, deltaY)
+ Tk_Canvas canvas; /* Canvas containing item. */
+ Tk_Item *itemPtr; /* Item that is being moved. */
+ double deltaX, deltaY; /* Amount by which item is to be
+ * moved. */
+{
+ WindowItem *winItemPtr = (WindowItem *) itemPtr;
+
+ winItemPtr->x += deltaX;
+ winItemPtr->y += deltaY;
+ ComputeWindowBbox(canvas, winItemPtr);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * WinItemStructureProc --
+ *
+ * This procedure is invoked whenever StructureNotify events
+ * occur for a window that's managed as part of a canvas window
+ * item. This procudure's only purpose is to clean up when
+ * windows are deleted.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The window is disassociated from the window item when it is
+ * deleted.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+WinItemStructureProc(clientData, eventPtr)
+ ClientData clientData; /* Pointer to record describing window item. */
+ XEvent *eventPtr; /* Describes what just happened. */
+{
+ WindowItem *winItemPtr = (WindowItem *) clientData;
+
+ if (eventPtr->type == DestroyNotify) {
+ winItemPtr->tkwin = NULL;
+ }
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * WinItemRequestProc --
+ *
+ * This procedure is invoked whenever a window that's associated
+ * with a window canvas item changes its requested dimensions.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The size and location on the screen of the window may change,
+ * depending on the options specified for the window item.
+ *
+ *--------------------------------------------------------------
+ */
+
+static void
+WinItemRequestProc(clientData, tkwin)
+ ClientData clientData; /* Pointer to record for window item. */
+ Tk_Window tkwin; /* Window that changed its desired
+ * size. */
+{
+ WindowItem *winItemPtr = (WindowItem *) clientData;
+
+ ComputeWindowBbox(winItemPtr->canvas, winItemPtr);
+ DisplayWinItem(winItemPtr->canvas, (Tk_Item *) winItemPtr,
+ (Display *) NULL, (Drawable) None, 0, 0, 0, 0);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * WinItemLostSlaveProc --
+ *
+ * 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 canvas-related information about the slave.
+ *
+ *--------------------------------------------------------------
+ */
+
+ /* ARGSUSED */
+static void
+WinItemLostSlaveProc(clientData, tkwin)
+ ClientData clientData; /* WindowItem structure for slave window that
+ * was stolen away. */
+ Tk_Window tkwin; /* Tk's handle for the slave window. */
+{
+ WindowItem *winItemPtr = (WindowItem *) clientData;
+ Tk_Window canvasTkwin = Tk_CanvasTkwin(winItemPtr->canvas);
+
+ Tk_DeleteEventHandler(winItemPtr->tkwin, StructureNotifyMask,
+ WinItemStructureProc, (ClientData) winItemPtr);
+ if (canvasTkwin != Tk_Parent(winItemPtr->tkwin)) {
+ Tk_UnmaintainGeometry(winItemPtr->tkwin, canvasTkwin);
+ }
+ Tk_UnmapWindow(winItemPtr->tkwin);
+ winItemPtr->tkwin = NULL;
+}