/* * tkFrame.c -- * * This module implements "frame", "labelframe" and "toplevel" widgets * for the Tk toolkit. Frames are windows with a background color and * possibly a 3-D effect, but not much else in the way of attributes. * * Copyright (c) 1990-1994 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. * * RCS: @(#) $Id$ */ #include "default.h" #include "tkInt.h" /* * The following enum is used to define the type of the frame. */ enum FrameType { TYPE_FRAME, TYPE_TOPLEVEL, TYPE_LABELFRAME }; /* * A data structure of the following type is kept for each * frame that currently exists for this process: */ typedef struct { Tk_Window tkwin; /* Window that embodies the frame. NULL means * that the window has been destroyed but the * data structures haven't yet been cleaned * up. */ Display *display; /* Display containing widget. Used, among * other things, so that resources can be * freed even after tkwin has gone away. */ Tcl_Interp *interp; /* Interpreter associated with widget. Used to * delete widget command. */ Tcl_Command widgetCmd; /* Token for frame's widget command. */ Tk_OptionTable optionTable; /* Table that defines configuration options * available for this widget. */ char *className; /* Class name for widget (from configuration * option). Malloc-ed. */ enum FrameType type; /* Type of widget, such as TYPE_FRAME. */ char *screenName; /* Screen on which widget is created. Non-null * only for top-levels. Malloc-ed, may be * NULL. */ char *visualName; /* Textual description of visual for window, * from -visual option. Malloc-ed, may be * NULL. */ char *colormapName; /* Textual description of colormap for window, * from -colormap option. Malloc-ed, may be * NULL. */ char *menuName; /* Textual description of menu to use for * menubar. Malloc-ed, may be NULL. */ Colormap colormap; /* If not None, identifies a colormap * allocated for this window, which must be * freed when the window is deleted. */ Tk_3DBorder border; /* Structure used to draw 3-D border and * background. NULL means no background or * border. */ int borderWidth; /* Width of 3-D border (if any). */ int relief; /* 3-d effect: TK_RELIEF_RAISED etc. */ int highlightWidth; /* Width in pixels of highlight to draw around * widget when it has the focus. 0 means don't * draw a highlight. */ XColor *highlightBgColorPtr; /* Color for drawing traversal highlight area * when highlight is off. */ XColor *highlightColorPtr; /* Color for drawing traversal highlight. */ int width; /* Width to request for window. <= 0 means * don't request any size. */ int height; /* Height to request for window. <= 0 means * don't request any size. */ Tk_Cursor cursor; /* Current cursor for window, or None. */ char *takeFocus; /* Value of -takefocus option; not used in the * C code, but used by keyboard traversal * scripts. Malloc'ed, but may be NULL. */ int isContainer; /* 1 means this window is a container, 0 means * that it isn't. */ char *useThis; /* If the window is embedded, this points to * the name of the window in which it is * embedded (malloc'ed). For non-embedded * windows this is NULL. */ int flags; /* Various flags; see below for * definitions. */ Tcl_Obj *padXPtr; /* Value of -padx option: specifies how many * pixels of extra space to leave on left and * right of child area. */ int padX; /* Integer value corresponding to padXPtr. */ Tcl_Obj *padYPtr; /* Value of -padx option: specifies how many * pixels of extra space to leave above and * below child area. */ int padY; /* Integer value corresponding to padYPtr. */ } Frame; /* * A data structure of the following type is kept for each labelframe widget * managed by this file: */ typedef struct { Frame frame; /* A pointer to the generic frame structure. * This must be the first element of the * Labelframe. */ /* * Labelframe specific configuration settings. */ Tcl_Obj *textPtr; /* Value of -text option: specifies text to * display in button. */ Tk_Font tkfont; /* Value of -font option: specifies font to * use for display text. */ XColor *textColorPtr; /* Value of -fg option: specifies foreground * color in normal mode. */ int labelAnchor; /* Value of -labelanchor option: specifies * where to place the label. */ Tk_Window labelWin; /* Value of -labelwidget option: Window to use * as label for the frame. */ /* * Labelframe specific fields for use with configuration settings above. */ GC textGC; /* GC for drawing text in normal mode. */ Tk_TextLayout textLayout; /* Stored text layout information. */ XRectangle labelBox; /* The label's actual size and position. */ int labelReqWidth; /* The label's requested width. */ int labelReqHeight; /* The label's requested height. */ int labelTextX, labelTextY; /* Position of the text to be drawn. */ } Labelframe; /* * The following macros define how many extra pixels to leave around a label's * text. */ #define LABELSPACING 1 #define LABELMARGIN 4 /* * Flag bits for frames: * * REDRAW_PENDING: Non-zero means a DoWhenIdle handler has * already been queued to redraw this window. * GOT_FOCUS: Non-zero means this widget currently has the * input focus. */ #define REDRAW_PENDING 1 #define GOT_FOCUS 4 /* * The following enum is used to define a type for the -labelanchor option of * the Labelframe widget. These values are used as indices into the string * table below. */ enum labelanchor { LABELANCHOR_E, LABELANCHOR_EN, LABELANCHOR_ES, LABELANCHOR_N, LABELANCHOR_NE, LABELANCHOR_NW, LABELANCHOR_S, LABELANCHOR_SE, LABELANCHOR_SW, LABELANCHOR_W, LABELANCHOR_WN, LABELANCHOR_WS }; static char *labelAnchorStrings[] = { "e", "en", "es", "n", "ne", "nw", "s", "se", "sw", "w", "wn", "ws", NULL }; /* * Information used for parsing configuration options. There are one common * table used by all and one table for each widget class. */ static const Tk_OptionSpec commonOptSpec[] = { {TK_OPTION_BORDER, "-background", "background", "Background", DEF_FRAME_BG_COLOR, -1, Tk_Offset(Frame, border), TK_OPTION_NULL_OK, (ClientData) DEF_FRAME_BG_MONO, 0}, {TK_OPTION_SYNONYM, "-bg", NULL, NULL, NULL, 0, -1, 0, (ClientData) "-background", 0}, {TK_OPTION_STRING, "-colormap", "colormap", "Colormap", DEF_FRAME_COLORMAP, -1, Tk_Offset(Frame, colormapName), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_BOOLEAN, "-container", "container", "Container", DEF_FRAME_CONTAINER, -1, Tk_Offset(Frame, isContainer), 0, 0, 0}, {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor", DEF_FRAME_CURSOR, -1, Tk_Offset(Frame, cursor), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_PIXELS, "-height", "height", "Height", DEF_FRAME_HEIGHT, -1, Tk_Offset(Frame, height), 0, 0, 0}, {TK_OPTION_COLOR, "-highlightbackground", "highlightBackground", "HighlightBackground", DEF_FRAME_HIGHLIGHT_BG, -1, Tk_Offset(Frame, highlightBgColorPtr), 0, 0, 0}, {TK_OPTION_COLOR, "-highlightcolor", "highlightColor", "HighlightColor", DEF_FRAME_HIGHLIGHT, -1, Tk_Offset(Frame, highlightColorPtr), 0, 0, 0}, {TK_OPTION_PIXELS, "-highlightthickness", "highlightThickness", "HighlightThickness", DEF_FRAME_HIGHLIGHT_WIDTH, -1, Tk_Offset(Frame, highlightWidth), 0, 0, 0}, {TK_OPTION_PIXELS, "-padx", "padX", "Pad", DEF_FRAME_PADX, Tk_Offset(Frame, padXPtr), Tk_Offset(Frame, padX), 0, 0, 0}, {TK_OPTION_PIXELS, "-pady", "padY", "Pad", DEF_FRAME_PADY, Tk_Offset(Frame, padYPtr), Tk_Offset(Frame, padY), 0, 0, 0}, {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus", DEF_FRAME_TAKE_FOCUS, -1, Tk_Offset(Frame, takeFocus), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-visual", "visual", "Visual", DEF_FRAME_VISUAL, -1, Tk_Offset(Frame, visualName), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_PIXELS, "-width", "width", "Width", DEF_FRAME_WIDTH, -1, Tk_Offset(Frame, width), 0, 0, 0}, {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, 0, 0, 0, 0} }; static const Tk_OptionSpec frameOptSpec[] = { {TK_OPTION_SYNONYM, "-bd", NULL, NULL, NULL, 0, -1, 0, (ClientData) "-borderwidth", 0}, {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", DEF_FRAME_BORDER_WIDTH, -1, Tk_Offset(Frame, borderWidth), 0, 0, 0}, {TK_OPTION_STRING, "-class", "class", "Class", DEF_FRAME_CLASS, -1, Tk_Offset(Frame, className), 0, 0, 0}, {TK_OPTION_RELIEF, "-relief", "relief", "Relief", DEF_FRAME_RELIEF, -1, Tk_Offset(Frame, relief), 0, 0, 0}, {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, 0, 0, (ClientData) commonOptSpec, 0} }; static const Tk_OptionSpec toplevelOptSpec[] = { {TK_OPTION_SYNONYM, "-bd", NULL, NULL, NULL, 0, -1, 0, (ClientData) "-borderwidth", 0}, {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", DEF_FRAME_BORDER_WIDTH, -1, Tk_Offset(Frame, borderWidth), 0, 0, 0}, {TK_OPTION_STRING, "-class", "class", "Class", DEF_TOPLEVEL_CLASS, -1, Tk_Offset(Frame, className), 0, 0, 0}, {TK_OPTION_STRING, "-menu", "menu", "Menu", DEF_TOPLEVEL_MENU, -1, Tk_Offset(Frame, menuName), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_RELIEF, "-relief", "relief", "Relief", DEF_FRAME_RELIEF, -1, Tk_Offset(Frame, relief), 0, 0, 0}, {TK_OPTION_STRING, "-screen", "screen", "Screen", DEF_TOPLEVEL_SCREEN, -1, Tk_Offset(Frame, screenName), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-use", "use", "Use", DEF_TOPLEVEL_USE, -1, Tk_Offset(Frame, useThis), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, 0, 0, (ClientData) commonOptSpec, 0} }; static const Tk_OptionSpec labelframeOptSpec[] = { {TK_OPTION_SYNONYM, "-bd", NULL, NULL, NULL, 0, -1, 0, (ClientData) "-borderwidth", 0}, {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", DEF_LABELFRAME_BORDER_WIDTH, -1, Tk_Offset(Frame, borderWidth), 0, 0, 0}, {TK_OPTION_STRING, "-class", "class", "Class", DEF_LABELFRAME_CLASS, -1, Tk_Offset(Frame, className), 0, 0, 0}, {TK_OPTION_SYNONYM, "-fg", "foreground", NULL, NULL, 0, -1, 0, (ClientData) "-foreground", 0}, {TK_OPTION_FONT, "-font", "font", "Font", DEF_LABELFRAME_FONT, -1, Tk_Offset(Labelframe, tkfont), 0, 0, 0}, {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground", DEF_LABELFRAME_FG, -1, Tk_Offset(Labelframe, textColorPtr), 0, 0, 0}, {TK_OPTION_STRING_TABLE, "-labelanchor", "labelAnchor", "LabelAnchor", DEF_LABELFRAME_LABELANCHOR, -1, Tk_Offset(Labelframe, labelAnchor), 0, (ClientData) labelAnchorStrings, 0}, {TK_OPTION_WINDOW, "-labelwidget", "labelWidget", "LabelWidget", NULL, -1, Tk_Offset(Labelframe, labelWin), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_RELIEF, "-relief", "relief", "Relief", DEF_LABELFRAME_RELIEF, -1, Tk_Offset(Frame, relief), 0, 0, 0}, {TK_OPTION_STRING, "-text", "text", "Text", DEF_LABELFRAME_TEXT, Tk_Offset(Labelframe, textPtr), -1, TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, 0, 0, (ClientData) commonOptSpec, 0} }; /* * Class names for widgets, indexed by FrameType. */ static char *classNames[] = {"Frame", "Toplevel", "Labelframe"}; /* * The following table maps from FrameType to the option template for that * class of widgets. */ static const Tk_OptionSpec * const optionSpecs[] = { frameOptSpec, toplevelOptSpec, labelframeOptSpec, }; /* * Forward declarations for functions defined later in this file: */ static void ComputeFrameGeometry(Frame *framePtr); static int ConfigureFrame(Tcl_Interp *interp, Frame *framePtr, int objc, Tcl_Obj *CONST objv[]); static int CreateFrame(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST argv[], enum FrameType type, char *appName); static void DestroyFrame(char *memPtr); static void DestroyFramePartly(Frame *framePtr); static void DisplayFrame(ClientData clientData); static void FrameCmdDeletedProc(ClientData clientData); static void FrameEventProc(ClientData clientData, XEvent *eventPtr); static void FrameLostSlaveProc(ClientData clientData, Tk_Window tkwin); static void FrameRequestProc(ClientData clientData, Tk_Window tkwin); static void FrameStructureProc(ClientData clientData, XEvent *eventPtr); static int FrameWidgetObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]); static void FrameWorldChanged(ClientData instanceData); static void MapFrame(ClientData clientData); /* * The structure below defines frame class behavior by means of functions that * can be invoked from generic window code. */ static Tk_ClassProcs frameClass = { sizeof(Tk_ClassProcs), /* size */ FrameWorldChanged /* worldChangedProc */ }; /* * The structure below defines the official type record for the labelframe's * geometry manager: */ static const Tk_GeomMgr frameGeomType = { "labelframe", /* name */ FrameRequestProc, /* requestProc */ FrameLostSlaveProc /* lostSlaveProc */ }; /* *-------------------------------------------------------------- * * Tk_FrameObjCmd, Tk_ToplevelObjCmd, Tk_LabelframeObjCmd -- * * These functions are invoked to process the "frame", "toplevel" and * "labelframe" Tcl commands. See the user documentation for details on * what they do. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. These functions are just wrappers; they * call CreateFrame to do all of the real work. * *-------------------------------------------------------------- */ int Tk_FrameObjCmd( ClientData clientData, /* Either NULL or pointer to option table. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { return CreateFrame(clientData, interp, objc, objv, TYPE_FRAME, NULL); } int Tk_ToplevelObjCmd( ClientData clientData, /* Either NULL or pointer to option table. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { return CreateFrame(clientData, interp, objc, objv, TYPE_TOPLEVEL, NULL); } int Tk_LabelframeObjCmd( ClientData clientData, /* Either NULL or pointer to option table. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { return CreateFrame(clientData, interp, objc, objv, TYPE_LABELFRAME, NULL); } /* *-------------------------------------------------------------- * * TkCreateFrame -- * * This function is the old command function for the "frame" and * "toplevel" commands. Now it is used directly by Tk_Init to create a * new main window. See the user documentation for the "frame" and * "toplevel" commands for details on what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *-------------------------------------------------------------- */ int TkCreateFrame( ClientData clientData, /* Either NULL or pointer to option table. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ char **argv, /* Argument strings. */ int toplevel, /* Non-zero means create a toplevel window, * zero means create a frame. */ char *appName) /* Should only be non-NULL if there is no main * window associated with the interpreter. * Gives the base name to use for the new * application. */ { int result, i; Tcl_Obj **objv = (Tcl_Obj **) ckalloc((argc+1) * sizeof(Tcl_Obj **)); for (i=0; i= 3) && (strncmp(arg, "-class", (unsigned) length) == 0)) { className = Tcl_GetString(objv[i+1]); } else if ((c == 'c') && (strncmp(arg, "-colormap", (unsigned) length) == 0)) { colormapName = Tcl_GetString(objv[i+1]); } else if ((c == 's') && (type == TYPE_TOPLEVEL) && (strncmp(arg, "-screen", (unsigned) length) == 0)) { screenName = Tcl_GetString(objv[i+1]); } else if ((c == 'u') && (type == TYPE_TOPLEVEL) && (strncmp(arg, "-use", (unsigned) length) == 0)) { useOption = Tcl_GetString(objv[i+1]); } else if ((c == 'v') && (strncmp(arg, "-visual", (unsigned) length) == 0)) { visualName = Tcl_GetString(objv[i+1]); } } /* * Create the window, and deal with the special options -use, -classname, * -colormap, -screenname, and -visual. These options must be handle * before calling ConfigureFrame below, and they must also be processed in * a particular order, for the following reasons: * 1. Must set the window's class before calling ConfigureFrame, so that * unspecified options are looked up in the option database using the * correct class. * 2. Must set visual information before calling ConfigureFrame so that * colors are allocated in a proper colormap. * 3. Must call TkpUseWindow before setting non-default visual * information, since TkpUseWindow changes the defaults. */ if (screenName == NULL) { screenName = (type == TYPE_TOPLEVEL) ? "" : NULL; } /* * Main window associated with interpreter. If we're called by Tk_Init to * create a new application, then this is NULL. */ tkwin = Tk_MainWindow(interp); if (tkwin != NULL) { newWin = Tk_CreateWindowFromPath(interp, tkwin, Tcl_GetString(objv[1]), screenName); } else if (appName == NULL) { /* * This occurs when someone tried to create a frame/toplevel while we * are being destroyed. Let an error be thrown. */ Tcl_AppendResult(interp, "unable to create widget \"", Tcl_GetString(objv[1]), "\"", NULL); newWin = NULL; } else { /* * We were called from Tk_Init; create a new application. */ newWin = TkCreateMainWindow(interp, screenName, appName); } if (newWin == NULL) { goto error; } else { /* * Mark Tk frames as suitable candidates for [wm manage] */ TkWindow *winPtr = (TkWindow *)newWin; winPtr->flags |= TK_WM_MANAGEABLE; } if (className == NULL) { className = Tk_GetOption(newWin, "class", "Class"); if (className == NULL) { className = classNames[type]; } } Tk_SetClass(newWin, className); if (useOption == NULL) { useOption = Tk_GetOption(newWin, "use", "Use"); } if ((useOption != NULL) && (*useOption != 0)) { if (TkpUseWindow(interp, newWin, useOption) != TCL_OK) { goto error; } } if (visualName == NULL) { visualName = Tk_GetOption(newWin, "visual", "Visual"); } if (colormapName == NULL) { colormapName = Tk_GetOption(newWin, "colormap", "Colormap"); } if ((colormapName != NULL) && (*colormapName == 0)) { colormapName = NULL; } if (visualName != NULL) { visual = Tk_GetVisual(interp, newWin, visualName, &depth, (colormapName == NULL) ? &colormap : NULL); if (visual == NULL) { goto error; } Tk_SetWindowVisual(newWin, visual, depth, colormap); } if (colormapName != NULL) { colormap = Tk_GetColormap(interp, newWin, colormapName); if (colormap == None) { goto error; } Tk_SetWindowColormap(newWin, colormap); } /* * For top-level windows, provide an initial geometry request of 200x200, * just so the window looks nicer on the screen if it doesn't request a * size for itself. */ if (type == TYPE_TOPLEVEL) { Tk_GeometryRequest(newWin, 200, 200); } /* * Create the widget record, process configuration options, and create * event handlers. Then fill in a few additional fields in the widget * record from the special options. */ if (type == TYPE_LABELFRAME) { framePtr = (Frame *) ckalloc(sizeof(Labelframe)); memset((void *) framePtr, 0, (sizeof(Labelframe))); } else { framePtr = (Frame *) ckalloc(sizeof(Frame)); memset((void *) framePtr, 0, (sizeof(Frame))); } framePtr->tkwin = newWin; framePtr->display = Tk_Display(newWin); framePtr->interp = interp; framePtr->widgetCmd = Tcl_CreateObjCommand(interp, Tk_PathName(newWin), FrameWidgetObjCmd, (ClientData) framePtr, FrameCmdDeletedProc); framePtr->optionTable = optionTable; framePtr->type = type; framePtr->colormap = colormap; framePtr->relief = TK_RELIEF_FLAT; framePtr->cursor = None; if (framePtr->type == TYPE_LABELFRAME) { Labelframe *labelframePtr = (Labelframe *) framePtr; labelframePtr->labelAnchor = LABELANCHOR_NW; labelframePtr->textGC = None; } /* * Store backreference to frame widget in window structure. */ Tk_SetClassProcs(newWin, &frameClass, (ClientData) framePtr); mask = ExposureMask | StructureNotifyMask | FocusChangeMask; if (type == TYPE_TOPLEVEL) { mask |= ActivateMask; } Tk_CreateEventHandler(newWin, mask, FrameEventProc, (ClientData) framePtr); if ((Tk_InitOptions(interp, (char *) framePtr, optionTable, newWin) != TCL_OK) || (ConfigureFrame(interp, framePtr, objc-2, objv+2) != TCL_OK)) { goto error; } if ((framePtr->isContainer)) { if (framePtr->useThis == NULL) { TkpMakeContainer(framePtr->tkwin); } else { Tcl_AppendResult(interp, "A window cannot have both the -use ", "and the -container option set.", NULL); goto error; } } if (type == TYPE_TOPLEVEL) { Tcl_DoWhenIdle(MapFrame, (ClientData) framePtr); } Tcl_SetResult(interp, Tk_PathName(newWin), TCL_STATIC); return TCL_OK; error: if (newWin != NULL) { Tk_DestroyWindow(newWin); } return TCL_ERROR; } /* *-------------------------------------------------------------- * * FrameWidgetObjCmd -- * * This function is invoked to process the Tcl command that corresponds * to a frame widget. See the user documentation for details on what it * does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *-------------------------------------------------------------- */ static int FrameWidgetObjCmd( ClientData clientData, /* Information about frame widget. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *CONST objv[]) /* Argument objects. */ { static CONST char *frameOptions[] = { "cget", "configure", NULL }; enum options { FRAME_CGET, FRAME_CONFIGURE }; register Frame *framePtr = (Frame *) clientData; int result = TCL_OK, index; int c, i, length; Tcl_Obj *objPtr; if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?"); return TCL_ERROR; } if (Tcl_GetIndexFromObj(interp, objv[1], frameOptions, "option", 0, &index) != TCL_OK) { return TCL_ERROR; } Tcl_Preserve((ClientData) framePtr); switch ((enum options) index) { case FRAME_CGET: if (objc != 3) { Tcl_WrongNumArgs(interp, 2, objv, "option"); result = TCL_ERROR; goto done; } objPtr = Tk_GetOptionValue(interp, (char *) framePtr, framePtr->optionTable, objv[2], framePtr->tkwin); if (objPtr == NULL) { result = TCL_ERROR; goto done; } else { Tcl_SetObjResult(interp, objPtr); } break; case FRAME_CONFIGURE: if (objc <= 3) { objPtr = Tk_GetOptionInfo(interp, (char *) framePtr, framePtr->optionTable, (objc == 3) ? objv[2] : NULL, framePtr->tkwin); if (objPtr == NULL) { result = TCL_ERROR; goto done; } else { Tcl_SetObjResult(interp, objPtr); } } else { /* * Don't allow the options -class, -colormap, -container, -screen, * -use, or -visual to be changed. */ for (i = 2; i < objc; i++) { char *arg = Tcl_GetStringFromObj(objv[i], &length); if (length < 2) { continue; } c = arg[1]; if (((c == 'c') && (length >= 2) && (strncmp(arg, "-class", (unsigned)length) == 0)) || ((c == 'c') && (length >= 3) && (strncmp(arg, "-colormap", (unsigned)length) == 0)) || ((c == 'c') && (length >= 3) && (strncmp(arg, "-container", (unsigned)length) == 0)) || ((c == 's') && (framePtr->type == TYPE_TOPLEVEL) && (strncmp(arg, "-screen", (unsigned)length) == 0)) || ((c == 'u') && (framePtr->type == TYPE_TOPLEVEL) && (strncmp(arg, "-use", (unsigned)length) == 0)) || ((c == 'v') && (strncmp(arg, "-visual", (unsigned)length) == 0))) { #ifdef SUPPORT_CONFIG_EMBEDDED if (c == 'u') { CONST char *string = Tcl_GetString(objv[i+1]); if (TkpUseWindow(interp, framePtr->tkwin, string) != TCL_OK) { result = TCL_ERROR; goto done; } } else { Tcl_AppendResult(interp, "can't modify ", arg, " option after widget is created", NULL); result = TCL_ERROR; goto done; } #else Tcl_AppendResult(interp, "can't modify ", arg, " option after widget is created", NULL); result = TCL_ERROR; goto done; #endif } } result = ConfigureFrame(interp, framePtr, objc-2, objv+2); } break; } done: Tcl_Release((ClientData) framePtr); return result; } /* *---------------------------------------------------------------------- * * DestroyFrame -- * * This function is invoked by Tcl_EventuallyFree or Tcl_Release to clean * up the internal structure of a frame at a safe time (when no-one is * using it anymore). * * Results: * None. * * Side effects: * Everything associated with the frame is freed up. * *---------------------------------------------------------------------- */ static void DestroyFrame( char *memPtr) /* Info about frame widget. */ { register Frame *framePtr = (Frame *) memPtr; register Labelframe *labelframePtr = (Labelframe *) memPtr; if (framePtr->type == TYPE_LABELFRAME) { Tk_FreeTextLayout(labelframePtr->textLayout); if (labelframePtr->textGC != None) { Tk_FreeGC(framePtr->display, labelframePtr->textGC); } } if (framePtr->colormap != None) { Tk_FreeColormap(framePtr->display, framePtr->colormap); } ckfree((char *) framePtr); } /* *---------------------------------------------------------------------- * * DestroyFramePartly -- * * This function is invoked to clean up everything that needs tkwin to be * defined when deleted. During the destruction process tkwin is always * set to NULL and this function must be called before that happens. * * Results: * None. * * Side effects: * Some things associated with the frame are freed up. * *---------------------------------------------------------------------- */ static void DestroyFramePartly( Frame *framePtr) /* Info about frame widget. */ { register Labelframe *labelframePtr = (Labelframe *) framePtr; if (framePtr->type == TYPE_LABELFRAME && labelframePtr->labelWin != NULL) { Tk_DeleteEventHandler(labelframePtr->labelWin, StructureNotifyMask, FrameStructureProc, (ClientData) framePtr); Tk_ManageGeometry(labelframePtr->labelWin, NULL, (ClientData) NULL); if (framePtr->tkwin != Tk_Parent(labelframePtr->labelWin)) { Tk_UnmaintainGeometry(labelframePtr->labelWin, framePtr->tkwin); } Tk_UnmapWindow(labelframePtr->labelWin); labelframePtr->labelWin = NULL; } Tk_FreeConfigOptions((char *) framePtr, framePtr->optionTable, framePtr->tkwin); } /* *---------------------------------------------------------------------- * * ConfigureFrame -- * * This function is called to process an objv/objc list, plus the Tk * option database, in order to configure (or reconfigure) a frame * 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 text string, colors, font, etc. get * set for framePtr; old resources get freed, if there were any. * *---------------------------------------------------------------------- */ static int ConfigureFrame( Tcl_Interp *interp, /* Used for error reporting. */ register Frame *framePtr, /* Information about widget; may or may not * already have values for some fields. */ int objc, /* Number of valid entries in objv. */ Tcl_Obj *CONST objv[]) /* Arguments. */ { Tk_SavedOptions savedOptions; char *oldMenuName; Tk_Window oldWindow = NULL; Labelframe *labelframePtr = (Labelframe *) framePtr; /* * Need the old menubar name for the menu code to delete it. */ if (framePtr->menuName == NULL) { oldMenuName = NULL; } else { oldMenuName = ckalloc(strlen(framePtr->menuName) + 1); strcpy(oldMenuName, framePtr->menuName); } if (framePtr->type == TYPE_LABELFRAME) { oldWindow = labelframePtr->labelWin; } if (Tk_SetOptions(interp, (char *) framePtr, framePtr->optionTable, objc, objv, framePtr->tkwin, &savedOptions, NULL) != TCL_OK) { if (oldMenuName != NULL) { ckfree(oldMenuName); } return TCL_ERROR; } else { Tk_FreeSavedOptions(&savedOptions); } /* * A few of the options require additional processing. */ if ((((oldMenuName == NULL) && (framePtr->menuName != NULL)) || ((oldMenuName != NULL) && (framePtr->menuName == NULL)) || ((oldMenuName != NULL) && (framePtr->menuName != NULL) && strcmp(oldMenuName, framePtr->menuName) != 0)) && framePtr->type == TYPE_TOPLEVEL) { TkSetWindowMenuBar(interp, framePtr->tkwin, oldMenuName, framePtr->menuName); } if (oldMenuName != NULL) { ckfree(oldMenuName); } if (framePtr->border != NULL) { Tk_SetBackgroundFromBorder(framePtr->tkwin, framePtr->border); } else { Tk_SetWindowBackgroundPixmap(framePtr->tkwin, None); } if (framePtr->highlightWidth < 0) { framePtr->highlightWidth = 0; } if (framePtr->padX < 0) { framePtr->padX = 0; } if (framePtr->padY < 0) { framePtr->padY = 0; } /* * If a -labelwidget is specified, check that it is valid and set up * geometry management for it. */ if (framePtr->type == TYPE_LABELFRAME) { if (oldWindow != labelframePtr->labelWin) { if (oldWindow != NULL) { Tk_DeleteEventHandler(oldWindow, StructureNotifyMask, FrameStructureProc, (ClientData) framePtr); Tk_ManageGeometry(oldWindow, NULL, (ClientData) NULL); Tk_UnmaintainGeometry(oldWindow, framePtr->tkwin); Tk_UnmapWindow(oldWindow); } if (labelframePtr->labelWin != NULL) { Tk_Window ancestor, parent, sibling = NULL; /* * Make sure that the frame is either the parent of the window * used as label or a descendant of that parent. Also, don't * allow a top-level window to be managed inside the frame. */ parent = Tk_Parent(labelframePtr->labelWin); for (ancestor = framePtr->tkwin; ; ancestor = Tk_Parent(ancestor)) { if (ancestor == parent) { break; } sibling = ancestor; if (Tk_IsTopLevel(ancestor)) { badWindow: Tcl_AppendResult(interp, "can't use ", Tk_PathName(labelframePtr->labelWin), " as label in this frame", NULL); labelframePtr->labelWin = NULL; return TCL_ERROR; } } if (Tk_IsTopLevel(labelframePtr->labelWin)) { goto badWindow; } if (labelframePtr->labelWin == framePtr->tkwin) { goto badWindow; } Tk_CreateEventHandler(labelframePtr->labelWin, StructureNotifyMask, FrameStructureProc, (ClientData) framePtr); Tk_ManageGeometry(labelframePtr->labelWin, &frameGeomType, (ClientData) framePtr); /* * If the frame is not parent to the label, make sure the * label is above its sibling in the stacking order. */ if (sibling != NULL) { Tk_RestackWindow(labelframePtr->labelWin, Above, sibling); } } } } FrameWorldChanged((ClientData) framePtr); return TCL_OK; } /* *--------------------------------------------------------------------------- * * FrameWorldChanged -- * * This function is called when the world has changed in some way and the * widget needs to recompute all its graphics contexts and determine its * new geometry. * * Results: * None. * * Side effects: * Frame will be relayed out and redisplayed. * *--------------------------------------------------------------------------- */ static void FrameWorldChanged( ClientData instanceData) /* Information about widget. */ { Frame *framePtr = (Frame *) instanceData; Labelframe *labelframePtr = (Labelframe *) framePtr; Tk_Window tkwin = framePtr->tkwin; XGCValues gcValues; GC gc; int anyTextLabel, anyWindowLabel; int bWidthLeft, bWidthRight, bWidthTop, bWidthBottom; char *labelText; anyTextLabel = (framePtr->type == TYPE_LABELFRAME) && (labelframePtr->textPtr != NULL) && (labelframePtr->labelWin == NULL); anyWindowLabel = (framePtr->type == TYPE_LABELFRAME) && (labelframePtr->labelWin != NULL); if (framePtr->type == TYPE_LABELFRAME) { /* * The textGC is needed even in the labelWin case, so it's always * created for a labelframe. */ gcValues.font = Tk_FontId(labelframePtr->tkfont); gcValues.foreground = labelframePtr->textColorPtr->pixel; gcValues.graphics_exposures = False; gc = Tk_GetGC(tkwin, GCForeground | GCFont | GCGraphicsExposures, &gcValues); if (labelframePtr->textGC != None) { Tk_FreeGC(framePtr->display, labelframePtr->textGC); } labelframePtr->textGC = gc; /* * Calculate label size. */ labelframePtr->labelReqWidth = labelframePtr->labelReqHeight = 0; if (anyTextLabel) { labelText = Tcl_GetString(labelframePtr->textPtr); Tk_FreeTextLayout(labelframePtr->textLayout); labelframePtr->textLayout = Tk_ComputeTextLayout(labelframePtr->tkfont, labelText, -1, 0, TK_JUSTIFY_CENTER, 0, &labelframePtr->labelReqWidth, &labelframePtr->labelReqHeight); labelframePtr->labelReqWidth += 2 * LABELSPACING; labelframePtr->labelReqHeight += 2 * LABELSPACING; } else if (anyWindowLabel) { labelframePtr->labelReqWidth = Tk_ReqWidth(labelframePtr->labelWin); labelframePtr->labelReqHeight = Tk_ReqHeight(labelframePtr->labelWin); } /* * Make sure label size is at least as big as the border. This * simplifies later calculations and gives a better appearance with * thick borders. */ if ((labelframePtr->labelAnchor >= LABELANCHOR_N) && (labelframePtr->labelAnchor <= LABELANCHOR_SW)) { if (labelframePtr->labelReqHeight < framePtr->borderWidth) { labelframePtr->labelReqHeight = framePtr->borderWidth; } } else { if (labelframePtr->labelReqWidth < framePtr->borderWidth) { labelframePtr->labelReqWidth = framePtr->borderWidth; } } } /* * Calculate individual border widths. */ bWidthBottom = bWidthTop = bWidthRight = bWidthLeft = framePtr->borderWidth + framePtr->highlightWidth; bWidthLeft += framePtr->padX; bWidthRight += framePtr->padX; bWidthTop += framePtr->padY; bWidthBottom += framePtr->padY; if (anyTextLabel || anyWindowLabel) { switch (labelframePtr->labelAnchor) { case LABELANCHOR_E: case LABELANCHOR_EN: case LABELANCHOR_ES: bWidthRight += labelframePtr->labelReqWidth - framePtr->borderWidth; break; case LABELANCHOR_N: case LABELANCHOR_NE: case LABELANCHOR_NW: bWidthTop += labelframePtr->labelReqHeight - framePtr->borderWidth; break; case LABELANCHOR_S: case LABELANCHOR_SE: case LABELANCHOR_SW: bWidthBottom += labelframePtr->labelReqHeight - framePtr->borderWidth; break; default: bWidthLeft += labelframePtr->labelReqWidth - framePtr->borderWidth; break; } } Tk_SetInternalBorderEx(tkwin, bWidthLeft, bWidthRight, bWidthTop, bWidthBottom); ComputeFrameGeometry(framePtr); /* * A labelframe should request size for its label. */ if (framePtr->type == TYPE_LABELFRAME) { int minwidth = labelframePtr->labelReqWidth; int minheight = labelframePtr->labelReqHeight; int padding = framePtr->highlightWidth; if (framePtr->borderWidth > 0) { padding += framePtr->borderWidth + LABELMARGIN; } padding *= 2; if ((labelframePtr->labelAnchor >= LABELANCHOR_N) && (labelframePtr->labelAnchor <= LABELANCHOR_SW)) { minwidth += padding; minheight += framePtr->borderWidth + framePtr->highlightWidth; } else { minheight += padding; minwidth += framePtr->borderWidth + framePtr->highlightWidth; } Tk_SetMinimumRequestSize(tkwin, minwidth, minheight); } if ((framePtr->width > 0) || (framePtr->height > 0)) { Tk_GeometryRequest(tkwin, framePtr->width, framePtr->height); } if (Tk_IsMapped(tkwin)) { if (!(framePtr->flags & REDRAW_PENDING)) { Tcl_DoWhenIdle(DisplayFrame, (ClientData) framePtr); } framePtr->flags |= REDRAW_PENDING; } } /* *---------------------------------------------------------------------- * * ComputeFrameGeometry -- * * This function is called to compute various geometrical information for * a frame, such as where various things get displayed. It's called when * the window is reconfigured. * * Results: * None. * * Side effects: * Display-related numbers get changed in *framePtr. * *---------------------------------------------------------------------- */ static void ComputeFrameGeometry( register Frame *framePtr) /* Information about widget. */ { int otherWidth, otherHeight, otherWidthT, otherHeightT, padding; int maxWidth, maxHeight; Tk_Window tkwin; Labelframe *labelframePtr = (Labelframe *) framePtr; /* * We have nothing to do here unless there is a label. */ if (framePtr->type != TYPE_LABELFRAME) return; if (labelframePtr->textPtr == NULL && labelframePtr->labelWin == NULL) { return; } tkwin = framePtr->tkwin; /* * Calculate the available size for the label */ labelframePtr->labelBox.width = labelframePtr->labelReqWidth; labelframePtr->labelBox.height = labelframePtr->labelReqHeight; padding = framePtr->highlightWidth; if (framePtr->borderWidth > 0) { padding += framePtr->borderWidth + LABELMARGIN; } padding *= 2; maxHeight = Tk_Height(tkwin); maxWidth = Tk_Width(tkwin); if ((labelframePtr->labelAnchor >= LABELANCHOR_N) && (labelframePtr->labelAnchor <= LABELANCHOR_SW)) { maxWidth -= padding; if (maxWidth < 1) maxWidth = 1; } else { maxHeight -= padding; if (maxHeight < 1) maxHeight = 1; } if (labelframePtr->labelBox.width > maxWidth) { labelframePtr->labelBox.width = maxWidth; } if (labelframePtr->labelBox.height > maxHeight) { labelframePtr->labelBox.height = maxHeight; } /* * Calculate label and text position. The text's position is based on the * requested size (= the text's real size) to get proper alignment if the * text does not fit. */ otherWidth = Tk_Width(tkwin) - labelframePtr->labelBox.width; otherHeight = Tk_Height(tkwin) - labelframePtr->labelBox.height; otherWidthT = Tk_Width(tkwin) - labelframePtr->labelReqWidth; otherHeightT = Tk_Height(tkwin) - labelframePtr->labelReqHeight; padding = framePtr->highlightWidth; switch (labelframePtr->labelAnchor) { case LABELANCHOR_E: case LABELANCHOR_EN: case LABELANCHOR_ES: labelframePtr->labelTextX = otherWidthT - padding; labelframePtr->labelBox.x = otherWidth - padding; break; case LABELANCHOR_N: case LABELANCHOR_NE: case LABELANCHOR_NW: labelframePtr->labelTextY = padding; labelframePtr->labelBox.y = padding; break; case LABELANCHOR_S: case LABELANCHOR_SE: case LABELANCHOR_SW: labelframePtr->labelTextY = otherHeightT - padding; labelframePtr->labelBox.y = otherHeight - padding; break; default: labelframePtr->labelTextX = padding; labelframePtr->labelBox.x = padding; break; } if (framePtr->borderWidth > 0) { padding += framePtr->borderWidth + LABELMARGIN; } switch (labelframePtr->labelAnchor) { case LABELANCHOR_NW: case LABELANCHOR_SW: labelframePtr->labelTextX = padding; labelframePtr->labelBox.x = padding; break; case LABELANCHOR_N: case LABELANCHOR_S: labelframePtr->labelTextX = otherWidthT / 2; labelframePtr->labelBox.x = otherWidth / 2; break; case LABELANCHOR_NE: case LABELANCHOR_SE: labelframePtr->labelTextX = otherWidthT - padding; labelframePtr->labelBox.x = otherWidth - padding; break; case LABELANCHOR_EN: case LABELANCHOR_WN: labelframePtr->labelTextY = padding; labelframePtr->labelBox.y = padding; break; case LABELANCHOR_E: case LABELANCHOR_W: labelframePtr->labelTextY = otherHeightT / 2; labelframePtr->labelBox.y = otherHeight / 2; break; default: labelframePtr->labelTextY = otherHeightT - padding; labelframePtr->labelBox.y = otherHeight - padding; break; } } /* *---------------------------------------------------------------------- * * DisplayFrame -- * * This function is invoked to display a frame widget. * * Results: * None. * * Side effects: * Commands are output to X to display the frame in its current mode. * *---------------------------------------------------------------------- */ static void DisplayFrame( ClientData clientData) /* Information about widget. */ { register Frame *framePtr = (Frame *) clientData; register Tk_Window tkwin = framePtr->tkwin; int bdX1, bdY1, bdX2, bdY2, hlWidth; Pixmap pixmap; TkRegion clipRegion = NULL; framePtr->flags &= ~REDRAW_PENDING; if ((framePtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { return; } /* * Highlight shall always be drawn if it exists, so do that first. */ hlWidth = framePtr->highlightWidth; if (hlWidth != 0) { GC fgGC, bgGC; bgGC = Tk_GCForColor(framePtr->highlightBgColorPtr, Tk_WindowId(tkwin)); if (framePtr->flags & GOT_FOCUS) { fgGC = Tk_GCForColor(framePtr->highlightColorPtr, Tk_WindowId(tkwin)); TkpDrawHighlightBorder(tkwin, fgGC, bgGC, hlWidth, Tk_WindowId(tkwin)); } else { TkpDrawHighlightBorder(tkwin, bgGC, bgGC, hlWidth, Tk_WindowId(tkwin)); } } /* * If -background is set to "", no interior is drawn. */ if (framePtr->border == NULL) return; if (framePtr->type != TYPE_LABELFRAME) { /* * Pass to platform specific draw function. In general, it just draws * a simple rectangle, but it may "theme" the background. */ noLabel: TkpDrawFrame(tkwin, framePtr->border, hlWidth, framePtr->borderWidth, framePtr->relief); } else { Labelframe *labelframePtr = (Labelframe *) framePtr; if ((labelframePtr->textPtr == NULL) && (labelframePtr->labelWin == NULL)) { goto noLabel; } #ifndef TK_NO_DOUBLE_BUFFERING /* * In order to avoid screen flashes, this function redraws the frame * into off-screen memory, then copies it back on-screen in a single * operation. This means there's no point in time where the on-screen * image has been cleared. */ pixmap = Tk_GetPixmap(framePtr->display, Tk_WindowId(tkwin), Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin)); #else pixmap = Tk_WindowId(tkwin); #endif /* TK_NO_DOUBLE_BUFFERING */ /* * Clear the pixmap. */ Tk_Fill3DRectangle(tkwin, pixmap, framePtr->border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); /* * Calculate how the label affects the border's position. */ bdX1 = bdY1 = hlWidth; bdX2 = Tk_Width(tkwin) - hlWidth; bdY2 = Tk_Height(tkwin) - hlWidth; switch (labelframePtr->labelAnchor) { case LABELANCHOR_E: case LABELANCHOR_EN: case LABELANCHOR_ES: bdX2 -= (labelframePtr->labelBox.width-framePtr->borderWidth) / 2; break; case LABELANCHOR_N: case LABELANCHOR_NE: case LABELANCHOR_NW: /* * Since the glyphs of the text tend to be in the lower part we * favor a lower border position by rounding up. */ bdY1 += (labelframePtr->labelBox.height-framePtr->borderWidth+1)/2; break; case LABELANCHOR_S: case LABELANCHOR_SE: case LABELANCHOR_SW: bdY2 -= (labelframePtr->labelBox.height-framePtr->borderWidth) / 2; break; default: bdX1 += (labelframePtr->labelBox.width-framePtr->borderWidth) / 2; break; } /* * Draw border */ Tk_Draw3DRectangle(tkwin, pixmap, framePtr->border, bdX1, bdY1, bdX2 - bdX1, bdY2 - bdY1, framePtr->borderWidth, framePtr->relief); if (labelframePtr->labelWin == NULL) { /* * Clear behind the label */ Tk_Fill3DRectangle(tkwin, pixmap, framePtr->border, labelframePtr->labelBox.x, labelframePtr->labelBox.y, labelframePtr->labelBox.width, labelframePtr->labelBox.height, 0, TK_RELIEF_FLAT); /* * Draw label. If there is not room for the entire label, use * clipping to get a nice appearance. */ if ((labelframePtr->labelBox.width < labelframePtr->labelReqWidth) || (labelframePtr->labelBox.height < labelframePtr->labelReqHeight)) { clipRegion = TkCreateRegion(); TkUnionRectWithRegion(&labelframePtr->labelBox, clipRegion, clipRegion); TkSetRegion(framePtr->display, labelframePtr->textGC, clipRegion); } Tk_DrawTextLayout(framePtr->display, pixmap, labelframePtr->textGC, labelframePtr->textLayout, labelframePtr->labelTextX + LABELSPACING, labelframePtr->labelTextY + LABELSPACING, 0, -1); if (clipRegion != NULL) { XSetClipMask(framePtr->display, labelframePtr->textGC, None); TkDestroyRegion(clipRegion); } } else { /* * Reposition and map the window (but in different ways depending * on whether the frame is the window's parent). */ if (framePtr->tkwin == Tk_Parent(labelframePtr->labelWin)) { if ((labelframePtr->labelBox.x != Tk_X(labelframePtr->labelWin)) || (labelframePtr->labelBox.y != Tk_Y(labelframePtr->labelWin)) || (labelframePtr->labelBox.width != Tk_Width(labelframePtr->labelWin)) || (labelframePtr->labelBox.height != Tk_Height(labelframePtr->labelWin))) { Tk_MoveResizeWindow(labelframePtr->labelWin, labelframePtr->labelBox.x, labelframePtr->labelBox.y, labelframePtr->labelBox.width, labelframePtr->labelBox.height); } Tk_MapWindow(labelframePtr->labelWin); } else { Tk_MaintainGeometry(labelframePtr->labelWin, framePtr->tkwin, labelframePtr->labelBox.x, labelframePtr->labelBox.y, labelframePtr->labelBox.width, labelframePtr->labelBox.height); } } #ifndef TK_NO_DOUBLE_BUFFERING /* * Everything's been redisplayed; now copy the pixmap onto the screen * and free up the pixmap. */ XCopyArea(framePtr->display, pixmap, Tk_WindowId(tkwin), labelframePtr->textGC, hlWidth, hlWidth, (unsigned) (Tk_Width(tkwin) - 2 * hlWidth), (unsigned) (Tk_Height(tkwin) - 2 * hlWidth), hlWidth, hlWidth); Tk_FreePixmap(framePtr->display, pixmap); #endif /* TK_NO_DOUBLE_BUFFERING */ } } /* *-------------------------------------------------------------- * * FrameEventProc -- * * This function is invoked by the Tk dispatcher on structure changes to * a frame. For frames with 3D borders, this function is also invoked for * exposures. * * Results: * None. * * Side effects: * When the window gets deleted, internal structures get cleaned up. * When it gets exposed, it is redisplayed. * *-------------------------------------------------------------- */ static void FrameEventProc( ClientData clientData, /* Information about window. */ register XEvent *eventPtr) /* Information about event. */ { register Frame *framePtr = (Frame *) clientData; if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) { goto redraw; } else if (eventPtr->type == ConfigureNotify) { ComputeFrameGeometry(framePtr); goto redraw; } else if (eventPtr->type == DestroyNotify) { if (framePtr->menuName != NULL) { TkSetWindowMenuBar(framePtr->interp, framePtr->tkwin, framePtr->menuName, NULL); ckfree(framePtr->menuName); framePtr->menuName = NULL; } if (framePtr->tkwin != NULL) { /* * If this window is a container, then this event could be coming * from the embedded application, in which case Tk_DestroyWindow * hasn't been called yet. When Tk_DestroyWindow is called later, * then another destroy event will be generated. We need to be * sure we ignore the second event, since the frame could be gone * by then. To do so, delete the event handler explicitly * (normally it's done implicitly by Tk_DestroyWindow). */ /* * Since the tkwin pointer will be gone when we reach * DestroyFrame, we must free all options now. */ DestroyFramePartly(framePtr); Tk_DeleteEventHandler(framePtr->tkwin, ExposureMask|StructureNotifyMask|FocusChangeMask, FrameEventProc, (ClientData) framePtr); framePtr->tkwin = NULL; Tcl_DeleteCommandFromToken(framePtr->interp, framePtr->widgetCmd); } if (framePtr->flags & REDRAW_PENDING) { Tcl_CancelIdleCall(DisplayFrame, (ClientData) framePtr); } Tcl_CancelIdleCall(MapFrame, (ClientData) framePtr); Tcl_EventuallyFree((ClientData) framePtr, DestroyFrame); } else if (eventPtr->type == FocusIn) { if (eventPtr->xfocus.detail != NotifyInferior) { framePtr->flags |= GOT_FOCUS; if (framePtr->highlightWidth > 0) { goto redraw; } } } else if (eventPtr->type == FocusOut) { if (eventPtr->xfocus.detail != NotifyInferior) { framePtr->flags &= ~GOT_FOCUS; if (framePtr->highlightWidth > 0) { goto redraw; } } } else if (eventPtr->type == ActivateNotify) { TkpSetMainMenubar(framePtr->interp, framePtr->tkwin, framePtr->menuName); } return; redraw: if ((framePtr->tkwin != NULL) && !(framePtr->flags & REDRAW_PENDING)) { Tcl_DoWhenIdle(DisplayFrame, (ClientData) framePtr); framePtr->flags |= REDRAW_PENDING; } } /* *---------------------------------------------------------------------- * * FrameCmdDeletedProc -- * * This function 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 FrameCmdDeletedProc( ClientData clientData) /* Pointer to widget record for widget. */ { Frame *framePtr = (Frame *) clientData; Tk_Window tkwin = framePtr->tkwin; if (framePtr->menuName != NULL) { TkSetWindowMenuBar(framePtr->interp, framePtr->tkwin, framePtr->menuName, NULL); ckfree(framePtr->menuName); framePtr->menuName = NULL; } /* * This function could be invoked either because the window was destroyed * and the command was then deleted (in which case tkwin is NULL) or * because the command was deleted, and then this function destroys the * widget. */ if (tkwin != NULL) { /* * Some options need tkwin to be freed, so we free them here, before * setting tkwin to NULL. */ DestroyFramePartly(framePtr); framePtr->tkwin = NULL; Tk_DestroyWindow(tkwin); } } /* *---------------------------------------------------------------------- * * MapFrame -- * * This function is invoked as a when-idle handler to map a newly-created * top-level frame. * * Results: * None. * * Side effects: * The frame given by the clientData argument is mapped. * *---------------------------------------------------------------------- */ static void MapFrame( ClientData clientData) /* Pointer to frame structure. */ { Frame *framePtr = (Frame *) clientData; /* * Wait for all other background events to be processed before mapping * window. This ensures that the window's correct geometry will have been * determined before it is first mapped, so that the window manager * doesn't get a false idea of its desired geometry. */ Tcl_Preserve((ClientData) framePtr); while (1) { if (Tcl_DoOneEvent(TCL_IDLE_EVENTS) == 0) { break; } /* * After each event, make sure that the window still exists and quit * if the window has been destroyed. */ if (framePtr->tkwin == NULL) { Tcl_Release((ClientData) framePtr); return; } } Tk_MapWindow(framePtr->tkwin); Tcl_Release((ClientData) framePtr); } /* *-------------------------------------------------------------- * * TkInstallFrameMenu -- * * This function is needed when a Windows HWND is created and a menubar * has been set to the window with a system menu. It notifies the menu * package so that the system menu can be rebuilt. * * Results: * None. * * Side effects: * The system menu (if any) is created for the menubar associated with * this frame. * *-------------------------------------------------------------- */ void TkInstallFrameMenu( Tk_Window tkwin) /* The window that was just created. */ { TkWindow *winPtr = (TkWindow *) tkwin; if (winPtr->mainPtr != NULL) { Frame *framePtr; framePtr = (Frame*) winPtr->instanceData; if (framePtr == NULL) { Tcl_Panic("TkInstallFrameMenu couldn't get frame pointer"); } TkpMenuNotifyToplevelCreate(winPtr->mainPtr->interp, framePtr->menuName); } } /* *-------------------------------------------------------------- * * FrameStructureProc -- * * This function is invoked whenever StructureNotify events occur for a * window that's managed as label for the frame. This procudure's only * purpose is to clean up when windows are deleted. * * Results: * None. * * Side effects: * The window is disassociated from the frame when it is deleted. * *-------------------------------------------------------------- */ static void FrameStructureProc( ClientData clientData, /* Pointer to record describing frame. */ XEvent *eventPtr) /* Describes what just happened. */ { Labelframe *labelframePtr = (Labelframe *) clientData; if (eventPtr->type == DestroyNotify) { /* * This should only happen in a labelframe but it doesn't hurt to be * careful. */ if (labelframePtr->frame.type == TYPE_LABELFRAME) { labelframePtr->labelWin = NULL; FrameWorldChanged((ClientData) labelframePtr); } } } /* *-------------------------------------------------------------- * * FrameRequestProc -- * * This function is invoked whenever a window that's associated with a * frame 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 frame. * *-------------------------------------------------------------- */ static void FrameRequestProc( ClientData clientData, /* Pointer to record for frame. */ Tk_Window tkwin) /* Window that changed its desired size. */ { Frame *framePtr = (Frame *) clientData; FrameWorldChanged((ClientData) framePtr); } /* *-------------------------------------------------------------- * * FrameLostSlaveProc -- * * This function is invoked by Tk whenever some other geometry claims * control over a slave that used to be managed by us. * * Results: * None. * * Side effects: * Forgets all frame-related information about the slave. * *-------------------------------------------------------------- */ static void FrameLostSlaveProc( ClientData clientData, /* Frame structure for slave window that was * stolen away. */ Tk_Window tkwin) /* Tk's handle for the slave window. */ { Frame *framePtr = (Frame *) clientData; Labelframe *labelframePtr = (Labelframe *) clientData; /* * This should only happen in a labelframe but it doesn't hurt to be * careful. */ if (labelframePtr->frame.type == TYPE_LABELFRAME) { Tk_DeleteEventHandler(labelframePtr->labelWin, StructureNotifyMask, FrameStructureProc, (ClientData) labelframePtr); if (framePtr->tkwin != Tk_Parent(labelframePtr->labelWin)) { Tk_UnmaintainGeometry(labelframePtr->labelWin, framePtr->tkwin); } Tk_UnmapWindow(labelframePtr->labelWin); labelframePtr->labelWin = NULL; } FrameWorldChanged((ClientData) framePtr); } void TkMapTopFrame (tkwin) Tk_Window tkwin; { Frame *framePtr = ((TkWindow*)tkwin)->instanceData; Tk_OptionTable optionTable; if (Tk_IsTopLevel(tkwin) && framePtr->type == TYPE_FRAME) { framePtr->type = TYPE_TOPLEVEL; Tcl_DoWhenIdle(MapFrame, (ClientData)framePtr); if (framePtr->menuName != NULL) { TkSetWindowMenuBar(framePtr->interp, framePtr->tkwin, NULL, framePtr->menuName); } } else if (!Tk_IsTopLevel(tkwin) && framePtr->type == TYPE_TOPLEVEL) { framePtr->type = TYPE_FRAME; } else { /* Not a frame or toplevel, skip it */ return; } /* * The option table has already been created so * the cached pointer will be returned. */ optionTable = Tk_CreateOptionTable(framePtr->interp, optionSpecs[framePtr->type]); framePtr->optionTable = optionTable; } /* *-------------------------------------------------------------- * * TkToplevelWindowFromCommandToken -- * * If the given command name to the command for a toplevel window in the * given interpreter, return the tkwin for that toplevel window. Note * that this lookup can't be done using the standard tkwin internal table * because the command might have been renamed. * * Results: * A Tk_Window token, or NULL if the name does not refer to a toplevel * window. * * Side effects: * None. * *-------------------------------------------------------------- */ Tk_Window TkToplevelWindowForCommand( Tcl_Interp *interp, CONST char *cmdName) { Tcl_CmdInfo cmdInfo; Frame *framePtr; if (Tcl_GetCommandInfo(interp, cmdName, &cmdInfo) == 0) { return NULL; } if (cmdInfo.objProc != FrameWidgetObjCmd) { return NULL; } framePtr = (Frame *) cmdInfo.objClientData; if (framePtr->type != TYPE_TOPLEVEL) { return NULL; } return framePtr->tkwin; } /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */