1002 lines
30 KiB
C
1002 lines
30 KiB
C
/*
|
||
* tkUnixEmbed.c --
|
||
*
|
||
* This file contains platform-specific procedures for UNIX to provide
|
||
* basic operations needed for application embedding (where one
|
||
* application can use as its main window an internal window from
|
||
* some other application).
|
||
*
|
||
* Copyright (c) 1996-1997 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: @(#) tkUnixEmbed.c 1.22 97/08/13 11:15:51
|
||
*/
|
||
|
||
#include "tkInt.h"
|
||
#include "tkUnixInt.h"
|
||
|
||
/*
|
||
* One of the following structures exists for each container in this
|
||
* application. It keeps track of the container window and its
|
||
* associated embedded window.
|
||
*/
|
||
|
||
typedef struct Container {
|
||
Window parent; /* X's window id for the parent of
|
||
* the pair (the container). */
|
||
Window parentRoot; /* Id for the root window of parent's
|
||
* screen. */
|
||
TkWindow *parentPtr; /* Tk's information about the container,
|
||
* or NULL if the container isn't
|
||
* in this process. */
|
||
Window wrapper; /* X's window id for the wrapper
|
||
* window for the embedded window.
|
||
* Starts off as None, but gets
|
||
* filled in when the window is
|
||
* eventually created. */
|
||
TkWindow *embeddedPtr; /* Tk's information about the embedded
|
||
* window, or NULL if the embedded
|
||
* application isn't in this process.
|
||
* Note that this is *not* the
|
||
* same window as wrapper: wrapper is
|
||
* the parent of embeddedPtr. */
|
||
struct Container *nextPtr; /* Next in list of all containers in
|
||
* this process. */
|
||
} Container;
|
||
|
||
static Container *firstContainerPtr = NULL;
|
||
/* First in list of all containers
|
||
* managed by this process. */
|
||
|
||
/*
|
||
* Prototypes for static procedures defined in this file:
|
||
*/
|
||
|
||
static void ContainerEventProc _ANSI_ARGS_((
|
||
ClientData clientData, XEvent *eventPtr));
|
||
static void EmbeddedEventProc _ANSI_ARGS_((
|
||
ClientData clientData, XEvent *eventPtr));
|
||
static int EmbedErrorProc _ANSI_ARGS_((ClientData clientData,
|
||
XErrorEvent *errEventPtr));
|
||
static void EmbedFocusProc _ANSI_ARGS_((ClientData clientData,
|
||
XEvent *eventPtr));
|
||
static void EmbedGeometryRequest _ANSI_ARGS_((
|
||
Container * containerPtr, int width, int height));
|
||
static void EmbedSendConfigure _ANSI_ARGS_((
|
||
Container *containerPtr));
|
||
static void EmbedStructureProc _ANSI_ARGS_((ClientData clientData,
|
||
XEvent *eventPtr));
|
||
static void EmbedWindowDeleted _ANSI_ARGS_((TkWindow *winPtr));
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpUseWindow --
|
||
*
|
||
* This procedure causes a Tk window to use a given X window as
|
||
* its parent window, rather than the root window for the screen.
|
||
* It is invoked by an embedded application to specify the window
|
||
* in which it is embedded.
|
||
*
|
||
* Results:
|
||
* The return value is normally TCL_OK. If an error occurs (such
|
||
* as string not being a valid window spec), then the return value
|
||
* is TCL_ERROR and an error message is left in interp->result if
|
||
* interp is non-NULL.
|
||
*
|
||
* Side effects:
|
||
* Changes the colormap and other visual information to match that
|
||
* of the parent window given by "string".
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
TkpUseWindow(interp, tkwin, string)
|
||
Tcl_Interp *interp; /* If not NULL, used for error reporting
|
||
* if string is bogus. */
|
||
Tk_Window tkwin; /* Tk window that does not yet have an
|
||
* associated X window. */
|
||
char *string; /* String identifying an X window to use
|
||
* for tkwin; must be an integer value. */
|
||
{
|
||
TkWindow *winPtr = (TkWindow *) tkwin;
|
||
int id, anyError;
|
||
Window parent;
|
||
Tk_ErrorHandler handler;
|
||
Container *containerPtr;
|
||
XWindowAttributes parentAtts;
|
||
|
||
if (winPtr->window != None) {
|
||
panic("TkUseWindow: X window already assigned");
|
||
}
|
||
if (Tcl_GetInt(interp, string, &id) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
parent = (Window) id;
|
||
|
||
/*
|
||
* Tk sets the window colormap to the screen default colormap in
|
||
* tkWindow.c:AllocWindow. This doesn't work well for embedded
|
||
* windows. So we override the colormap and visual settings to be
|
||
* the same as the parent window (which is in the container app).
|
||
*/
|
||
|
||
anyError = 0;
|
||
handler = Tk_CreateErrorHandler(winPtr->display, -1, -1, -1,
|
||
EmbedErrorProc, (ClientData) &anyError);
|
||
if (!XGetWindowAttributes(winPtr->display, parent, &parentAtts)) {
|
||
anyError = 1;
|
||
}
|
||
XSync(winPtr->display, False);
|
||
Tk_DeleteErrorHandler(handler);
|
||
if (anyError) {
|
||
if (interp != NULL) {
|
||
Tcl_AppendResult(interp, "couldn't create child of window \"",
|
||
string, "\"", (char *) NULL);
|
||
}
|
||
return TCL_ERROR;
|
||
}
|
||
Tk_SetWindowVisual(tkwin, parentAtts.visual, parentAtts.depth,
|
||
parentAtts.colormap);
|
||
|
||
/*
|
||
* Create an event handler to clean up the Container structure when
|
||
* tkwin is eventually deleted.
|
||
*/
|
||
|
||
Tk_CreateEventHandler(tkwin, StructureNotifyMask, EmbeddedEventProc,
|
||
(ClientData) winPtr);
|
||
|
||
/*
|
||
* Save information about the container and the embedded window
|
||
* in a Container structure. If there is already an existing
|
||
* Container structure, it means that both container and embedded
|
||
* app. are in the same process.
|
||
*/
|
||
|
||
for (containerPtr = firstContainerPtr; containerPtr != NULL;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
if (containerPtr->parent == parent) {
|
||
winPtr->flags |= TK_BOTH_HALVES;
|
||
containerPtr->parentPtr->flags |= TK_BOTH_HALVES;
|
||
break;
|
||
}
|
||
}
|
||
if (containerPtr == NULL) {
|
||
containerPtr = (Container *) ckalloc(sizeof(Container));
|
||
containerPtr->parent = parent;
|
||
containerPtr->parentRoot = parentAtts.root;
|
||
containerPtr->parentPtr = NULL;
|
||
containerPtr->wrapper = None;
|
||
containerPtr->nextPtr = firstContainerPtr;
|
||
firstContainerPtr = containerPtr;
|
||
}
|
||
containerPtr->embeddedPtr = winPtr;
|
||
winPtr->flags |= TK_EMBEDDED;
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpMakeWindow --
|
||
*
|
||
* Create an actual window system window object based on the
|
||
* current attributes of the specified TkWindow.
|
||
*
|
||
* Results:
|
||
* Returns the handle to the new window, or None on failure.
|
||
*
|
||
* Side effects:
|
||
* Creates a new X window.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
Window
|
||
TkpMakeWindow(winPtr, parent)
|
||
TkWindow *winPtr; /* Tk's information about the window that
|
||
* is to be instantiated. */
|
||
Window parent; /* Window system token for the parent in
|
||
* which the window is to be created. */
|
||
{
|
||
Container *containerPtr;
|
||
|
||
if (winPtr->flags & TK_EMBEDDED) {
|
||
/*
|
||
* This window is embedded. Don't create the new window in the
|
||
* given parent; instead, create it as a child of the root window
|
||
* of the container's screen. The window will get reparented
|
||
* into a wrapper window later.
|
||
*/
|
||
|
||
for (containerPtr = firstContainerPtr; ;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
if (containerPtr == NULL) {
|
||
panic("TkMakeWindow couldn't find container for window");
|
||
}
|
||
if (containerPtr->embeddedPtr == winPtr) {
|
||
break;
|
||
}
|
||
}
|
||
parent = containerPtr->parentRoot;
|
||
}
|
||
|
||
return XCreateWindow(winPtr->display, parent, winPtr->changes.x,
|
||
winPtr->changes.y, (unsigned) winPtr->changes.width,
|
||
(unsigned) winPtr->changes.height,
|
||
(unsigned) winPtr->changes.border_width, winPtr->depth,
|
||
InputOutput, winPtr->visual, winPtr->dirtyAtts,
|
||
&winPtr->atts);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpMakeContainer --
|
||
*
|
||
* This procedure is called to indicate that a particular window
|
||
* will be a container for an embedded application. This changes
|
||
* certain aspects of the window's behavior, such as whether it
|
||
* will receive events anymore.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkpMakeContainer(tkwin)
|
||
Tk_Window tkwin; /* Token for a window that is about to
|
||
* become a container. */
|
||
{
|
||
TkWindow *winPtr = (TkWindow *) tkwin;
|
||
Container *containerPtr;
|
||
|
||
/*
|
||
* Register the window as a container so that, for example, we can
|
||
* find out later if the embedded app. is in the same process.
|
||
*/
|
||
|
||
Tk_MakeWindowExist(tkwin);
|
||
containerPtr = (Container *) ckalloc(sizeof(Container));
|
||
containerPtr->parent = Tk_WindowId(tkwin);
|
||
containerPtr->parentRoot = RootWindowOfScreen(Tk_Screen(tkwin));
|
||
containerPtr->parentPtr = winPtr;
|
||
containerPtr->wrapper = None;
|
||
containerPtr->embeddedPtr = NULL;
|
||
containerPtr->nextPtr = firstContainerPtr;
|
||
firstContainerPtr = containerPtr;
|
||
winPtr->flags |= TK_CONTAINER;
|
||
|
||
/*
|
||
* Request SubstructureNotify events so that we can find out when
|
||
* the embedded application creates its window or attempts to
|
||
* resize it. Also watch Configure events on the container so that
|
||
* we can resize the child to match.
|
||
*/
|
||
|
||
winPtr->atts.event_mask |= SubstructureRedirectMask|SubstructureNotifyMask;
|
||
XSelectInput(winPtr->display, winPtr->window, winPtr->atts.event_mask);
|
||
Tk_CreateEventHandler(tkwin,
|
||
SubstructureNotifyMask|SubstructureRedirectMask,
|
||
ContainerEventProc, (ClientData) winPtr);
|
||
Tk_CreateEventHandler(tkwin, StructureNotifyMask, EmbedStructureProc,
|
||
(ClientData) containerPtr);
|
||
Tk_CreateEventHandler(tkwin, FocusChangeMask, EmbedFocusProc,
|
||
(ClientData) containerPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EmbedErrorProc --
|
||
*
|
||
* This procedure is invoked if an error occurs while creating
|
||
* an embedded window.
|
||
*
|
||
* Results:
|
||
* Always returns 0 to indicate that the error has been properly
|
||
* handled.
|
||
*
|
||
* Side effects:
|
||
* The integer pointed to by the clientData argument is set to 1.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
EmbedErrorProc(clientData, errEventPtr)
|
||
ClientData clientData; /* Points to integer to set. */
|
||
XErrorEvent *errEventPtr; /* Points to information about error
|
||
* (not used). */
|
||
{
|
||
int *iPtr = (int *) clientData;
|
||
|
||
*iPtr = 1;
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EmbeddedEventProc --
|
||
*
|
||
* This procedure is invoked by the Tk event dispatcher when various
|
||
* useful events are received for a window that is embedded in
|
||
* another application.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Our internal state gets cleaned up when an embedded window is
|
||
* destroyed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EmbeddedEventProc(clientData, eventPtr)
|
||
ClientData clientData; /* Token for container window. */
|
||
XEvent *eventPtr; /* ResizeRequest event. */
|
||
{
|
||
TkWindow *winPtr = (TkWindow *) clientData;
|
||
|
||
if (eventPtr->type == DestroyNotify) {
|
||
EmbedWindowDeleted(winPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ContainerEventProc --
|
||
*
|
||
* This procedure is invoked by the Tk event dispatcher when various
|
||
* useful events are received for the children of a container
|
||
* window. It forwards relevant information, such as geometry
|
||
* requests, from the events into the container's application.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Depends on the event. For example, when ConfigureRequest events
|
||
* occur, geometry information gets set for the container window.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
ContainerEventProc(clientData, eventPtr)
|
||
ClientData clientData; /* Token for container window. */
|
||
XEvent *eventPtr; /* ResizeRequest event. */
|
||
{
|
||
TkWindow *winPtr = (TkWindow *) clientData;
|
||
Container *containerPtr;
|
||
Tk_ErrorHandler errHandler;
|
||
|
||
/*
|
||
* Ignore any X protocol errors that happen in this procedure
|
||
* (almost any operation could fail, for example, if the embedded
|
||
* application has deleted its window).
|
||
*/
|
||
|
||
errHandler = Tk_CreateErrorHandler(eventPtr->xfocus.display, -1,
|
||
-1, -1, (Tk_ErrorProc *) NULL, (ClientData) NULL);
|
||
|
||
/*
|
||
* Find the Container structure associated with the parent window.
|
||
*/
|
||
|
||
for (containerPtr = firstContainerPtr;
|
||
containerPtr->parent != eventPtr->xmaprequest.parent;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
if (containerPtr == NULL) {
|
||
panic("ContainerEventProc couldn't find Container record");
|
||
}
|
||
}
|
||
|
||
if (eventPtr->type == CreateNotify) {
|
||
/*
|
||
* A new child window has been created in the container. Record
|
||
* its id in the Container structure (if more than one child is
|
||
* created, just remember the last one and ignore the earlier
|
||
* ones). Also set the child's size to match the container.
|
||
*/
|
||
|
||
containerPtr->wrapper = eventPtr->xcreatewindow.window;
|
||
XMoveResizeWindow(eventPtr->xcreatewindow.display,
|
||
containerPtr->wrapper, 0, 0,
|
||
(unsigned int) Tk_Width(
|
||
(Tk_Window) containerPtr->parentPtr),
|
||
(unsigned int) Tk_Height(
|
||
(Tk_Window) containerPtr->parentPtr));
|
||
} else if (eventPtr->type == ConfigureRequest) {
|
||
if ((eventPtr->xconfigurerequest.x != 0)
|
||
|| (eventPtr->xconfigurerequest.y != 0)) {
|
||
/*
|
||
* The embedded application is trying to move itself, which
|
||
* isn't legal. At this point, the window hasn't actually
|
||
* moved, but we need to send it a ConfigureNotify event to
|
||
* let it know that its request has been denied. If the
|
||
* embedded application was also trying to resize itself, a
|
||
* ConfigureNotify will be sent by the geometry management
|
||
* code below, so we don't need to do anything. Otherwise,
|
||
* generate a synthetic event.
|
||
*/
|
||
|
||
if ((eventPtr->xconfigurerequest.width == winPtr->changes.width)
|
||
&& (eventPtr->xconfigurerequest.height
|
||
== winPtr->changes.height)) {
|
||
EmbedSendConfigure(containerPtr);
|
||
}
|
||
}
|
||
EmbedGeometryRequest(containerPtr,
|
||
eventPtr->xconfigurerequest.width,
|
||
eventPtr->xconfigurerequest.height);
|
||
} else if (eventPtr->type == MapRequest) {
|
||
/*
|
||
* The embedded application's map request was ignored and simply
|
||
* passed on to us, so we have to map the window for it to appear
|
||
* on the screen.
|
||
*/
|
||
|
||
XMapWindow(eventPtr->xmaprequest.display,
|
||
eventPtr->xmaprequest.window);
|
||
} else if (eventPtr->type == DestroyNotify) {
|
||
/*
|
||
* The embedded application is gone. Destroy the container window.
|
||
*/
|
||
|
||
Tk_DestroyWindow((Tk_Window) winPtr);
|
||
}
|
||
Tk_DeleteErrorHandler(errHandler);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EmbedStructureProc --
|
||
*
|
||
* This procedure is invoked by the Tk event dispatcher when
|
||
* a container window owned by this application gets resized
|
||
* (and also at several other times that we don't care about).
|
||
* This procedure reflects the size change in the embedded
|
||
* window that corresponds to the container.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The embedded window gets resized to match the container.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EmbedStructureProc(clientData, eventPtr)
|
||
ClientData clientData; /* Token for container window. */
|
||
XEvent *eventPtr; /* ResizeRequest event. */
|
||
{
|
||
Container *containerPtr = (Container *) clientData;
|
||
Tk_ErrorHandler errHandler;
|
||
|
||
if (eventPtr->type == ConfigureNotify) {
|
||
if (containerPtr->wrapper != None) {
|
||
/*
|
||
* Ignore errors, since the embedded application could have
|
||
* deleted its window.
|
||
*/
|
||
|
||
errHandler = Tk_CreateErrorHandler(eventPtr->xfocus.display, -1,
|
||
-1, -1, (Tk_ErrorProc *) NULL, (ClientData) NULL);
|
||
XMoveResizeWindow(eventPtr->xconfigure.display,
|
||
containerPtr->wrapper, 0, 0,
|
||
(unsigned int) Tk_Width(
|
||
(Tk_Window) containerPtr->parentPtr),
|
||
(unsigned int) Tk_Height(
|
||
(Tk_Window) containerPtr->parentPtr));
|
||
Tk_DeleteErrorHandler(errHandler);
|
||
}
|
||
} else if (eventPtr->type == DestroyNotify) {
|
||
EmbedWindowDeleted(containerPtr->parentPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EmbedFocusProc --
|
||
*
|
||
* This procedure is invoked by the Tk event dispatcher when
|
||
* FocusIn and FocusOut events occur for a container window owned
|
||
* by this application. It is responsible for moving the focus
|
||
* back and forth between a container application and an embedded
|
||
* application.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The X focus may change.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EmbedFocusProc(clientData, eventPtr)
|
||
ClientData clientData; /* Token for container window. */
|
||
XEvent *eventPtr; /* ResizeRequest event. */
|
||
{
|
||
Container *containerPtr = (Container *) clientData;
|
||
Tk_ErrorHandler errHandler;
|
||
Display *display;
|
||
|
||
display = Tk_Display(containerPtr->parentPtr);
|
||
if (eventPtr->type == FocusIn) {
|
||
/*
|
||
* The focus just arrived at the container. Change the X focus
|
||
* to move it to the embedded application, if there is one.
|
||
* Ignore X errors that occur during this operation (it's
|
||
* possible that the new focus window isn't mapped).
|
||
*/
|
||
|
||
if (containerPtr->wrapper != None) {
|
||
errHandler = Tk_CreateErrorHandler(eventPtr->xfocus.display, -1,
|
||
-1, -1, (Tk_ErrorProc *) NULL, (ClientData) NULL);
|
||
XSetInputFocus(display, containerPtr->wrapper, RevertToParent,
|
||
CurrentTime);
|
||
Tk_DeleteErrorHandler(errHandler);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EmbedGeometryRequest --
|
||
*
|
||
* This procedure is invoked when an embedded application requests
|
||
* a particular size. It processes the request (which may or may
|
||
* not actually honor the request) and reflects the results back
|
||
* to the embedded application.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* If we deny the child's size change request, a Configure event
|
||
* is synthesized to let the child know how big it ought to be.
|
||
* Events get processed while we're waiting for the geometry
|
||
* managers to do their thing.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EmbedGeometryRequest(containerPtr, width, height)
|
||
Container *containerPtr; /* Information about the embedding. */
|
||
int width, height; /* Size that the child has requested. */
|
||
{
|
||
TkWindow *winPtr = containerPtr->parentPtr;
|
||
|
||
/*
|
||
* Forward the requested size into our geometry management hierarchy
|
||
* via the container window. We need to send a Configure event back
|
||
* to the embedded application if we decide not to honor its
|
||
* request; to make this happen, process all idle event handlers
|
||
* synchronously here (so that the geometry managers have had a
|
||
* chance to do whatever they want to do), and if the window's size
|
||
* didn't change then generate a configure event.
|
||
*/
|
||
|
||
Tk_GeometryRequest((Tk_Window) winPtr, width, height);
|
||
while (Tcl_DoOneEvent(TCL_IDLE_EVENTS)) {
|
||
/* Empty loop body. */
|
||
}
|
||
if ((winPtr->changes.width != width)
|
||
|| (winPtr->changes.height != height)) {
|
||
EmbedSendConfigure(containerPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EmbedSendConfigure --
|
||
*
|
||
* This procedure synthesizes a ConfigureNotify event to notify an
|
||
* embedded application of its current size and location. This
|
||
* procedure is called when the embedded application made a
|
||
* geometry request that we did not grant, so that the embedded
|
||
* application knows that its geometry didn't change after all.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EmbedSendConfigure(containerPtr)
|
||
Container *containerPtr; /* Information about the embedding. */
|
||
{
|
||
TkWindow *winPtr = containerPtr->parentPtr;
|
||
XEvent event;
|
||
|
||
event.xconfigure.type = ConfigureNotify;
|
||
event.xconfigure.serial =
|
||
LastKnownRequestProcessed(winPtr->display);
|
||
event.xconfigure.send_event = True;
|
||
event.xconfigure.display = winPtr->display;
|
||
event.xconfigure.event = containerPtr->wrapper;
|
||
event.xconfigure.window = containerPtr->wrapper;
|
||
event.xconfigure.x = 0;
|
||
event.xconfigure.y = 0;
|
||
event.xconfigure.width = winPtr->changes.width;
|
||
event.xconfigure.height = winPtr->changes.height;
|
||
event.xconfigure.above = None;
|
||
event.xconfigure.override_redirect = False;
|
||
|
||
/*
|
||
* Note: when sending the event below, the ButtonPressMask
|
||
* causes the event to be sent only to applications that have
|
||
* selected for ButtonPress events, which should be just the
|
||
* embedded application.
|
||
*/
|
||
|
||
XSendEvent(winPtr->display, containerPtr->wrapper, False,
|
||
0, &event);
|
||
|
||
/*
|
||
* The following needs to be done if the embedded window is
|
||
* not in the same application as the container window.
|
||
*/
|
||
|
||
if (containerPtr->embeddedPtr == NULL) {
|
||
XMoveResizeWindow(winPtr->display, containerPtr->wrapper, 0, 0,
|
||
(unsigned int) winPtr->changes.width,
|
||
(unsigned int) winPtr->changes.height);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpGetOtherWindow --
|
||
*
|
||
* If both the container and embedded window are in the same
|
||
* process, this procedure will return either one, given the other.
|
||
*
|
||
* Results:
|
||
* If winPtr is a container, the return value is the token for the
|
||
* embedded window, and vice versa. If the "other" window isn't in
|
||
* this process, NULL is returned.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
TkWindow *
|
||
TkpGetOtherWindow(winPtr)
|
||
TkWindow *winPtr; /* Tk's structure for a container or
|
||
* embedded window. */
|
||
{
|
||
Container *containerPtr;
|
||
|
||
for (containerPtr = firstContainerPtr; containerPtr != NULL;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
if (containerPtr->embeddedPtr == winPtr) {
|
||
return containerPtr->parentPtr;
|
||
} else if (containerPtr->parentPtr == winPtr) {
|
||
return containerPtr->embeddedPtr;
|
||
}
|
||
}
|
||
panic("TkpGetOtherWindow couldn't find window");
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpRedirectKeyEvent --
|
||
*
|
||
* This procedure is invoked when a key press or release event
|
||
* arrives for an application that does not believe it owns the
|
||
* input focus. This can happen because of embedding; for example,
|
||
* X can send an event to an embedded application when the real
|
||
* focus window is in the container application and is an ancestor
|
||
* of the container. This procedure's job is to forward the event
|
||
* back to the application where it really belongs.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The event may get sent to a different application.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkpRedirectKeyEvent(winPtr, eventPtr)
|
||
TkWindow *winPtr; /* Window to which the event was originally
|
||
* reported. */
|
||
XEvent *eventPtr; /* X event to redirect (should be KeyPress
|
||
* or KeyRelease). */
|
||
{
|
||
Container *containerPtr;
|
||
Window saved;
|
||
|
||
/*
|
||
* First, find the top-level window corresponding to winPtr.
|
||
*/
|
||
|
||
while (1) {
|
||
if (winPtr == NULL) {
|
||
/*
|
||
* This window is being deleted. This is too confusing a
|
||
* case to handle so discard the event.
|
||
*/
|
||
|
||
return;
|
||
}
|
||
if (winPtr->flags & TK_TOP_LEVEL) {
|
||
break;
|
||
}
|
||
winPtr = winPtr->parentPtr;
|
||
}
|
||
|
||
if (winPtr->flags & TK_EMBEDDED) {
|
||
/*
|
||
* This application is embedded. If we got a key event without
|
||
* officially having the focus, it means that the focus is
|
||
* really in the container, but the mouse was over the embedded
|
||
* application. Send the event back to the container.
|
||
*/
|
||
|
||
for (containerPtr = firstContainerPtr;
|
||
containerPtr->embeddedPtr != winPtr;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
/* Empty loop body. */
|
||
}
|
||
saved = eventPtr->xkey.window;
|
||
eventPtr->xkey.window = containerPtr->parent;
|
||
XSendEvent(eventPtr->xkey.display, eventPtr->xkey.window, False,
|
||
KeyPressMask|KeyReleaseMask, eventPtr);
|
||
eventPtr->xkey.window = saved;
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpClaimFocus --
|
||
*
|
||
* This procedure is invoked when someone asks or the input focus
|
||
* to be put on a window in an embedded application, but the
|
||
* application doesn't currently have the focus. It requests the
|
||
* input focus from the container application.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The input focus may change.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkpClaimFocus(topLevelPtr, force)
|
||
TkWindow *topLevelPtr; /* Top-level window containing desired
|
||
* focus window; should be embedded. */
|
||
int force; /* One means that the container should
|
||
* claim the focus if it doesn't
|
||
* currently have it. */
|
||
{
|
||
XEvent event;
|
||
Container *containerPtr;
|
||
|
||
if (!(topLevelPtr->flags & TK_EMBEDDED)) {
|
||
return;
|
||
}
|
||
|
||
for (containerPtr = firstContainerPtr;
|
||
containerPtr->embeddedPtr != topLevelPtr;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
/* Empty loop body. */
|
||
}
|
||
|
||
event.xfocus.type = FocusIn;
|
||
event.xfocus.serial = LastKnownRequestProcessed(topLevelPtr->display);
|
||
event.xfocus.send_event = 1;
|
||
event.xfocus.display = topLevelPtr->display;
|
||
event.xfocus.window = containerPtr->parent;
|
||
event.xfocus.mode = EMBEDDED_APP_WANTS_FOCUS;
|
||
event.xfocus.detail = force;
|
||
XSendEvent(event.xfocus.display, event.xfocus.window, False, 0, &event);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpTestembedCmd --
|
||
*
|
||
* This procedure implements the "testembed" command. It returns
|
||
* some or all of the information in the list pointed to by
|
||
* firstContainerPtr.
|
||
*
|
||
* Results:
|
||
* A standard Tcl result.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
TkpTestembedCmd(clientData, interp, argc, argv)
|
||
ClientData clientData; /* Main window for application. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int all;
|
||
Container *containerPtr;
|
||
Tcl_DString dString;
|
||
char buffer[50];
|
||
|
||
if ((argc > 1) && (strcmp(argv[1], "all") == 0)) {
|
||
all = 1;
|
||
} else {
|
||
all = 0;
|
||
}
|
||
Tcl_DStringInit(&dString);
|
||
for (containerPtr = firstContainerPtr; containerPtr != NULL;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
Tcl_DStringStartSublist(&dString);
|
||
if (containerPtr->parent == None) {
|
||
Tcl_DStringAppendElement(&dString, "");
|
||
} else {
|
||
if (all) {
|
||
sprintf(buffer, "0x%x", (int) containerPtr->parent);
|
||
Tcl_DStringAppendElement(&dString, buffer);
|
||
} else {
|
||
Tcl_DStringAppendElement(&dString, "XXX");
|
||
}
|
||
}
|
||
if (containerPtr->parentPtr == NULL) {
|
||
Tcl_DStringAppendElement(&dString, "");
|
||
} else {
|
||
Tcl_DStringAppendElement(&dString,
|
||
containerPtr->parentPtr->pathName);
|
||
}
|
||
if (containerPtr->wrapper == None) {
|
||
Tcl_DStringAppendElement(&dString, "");
|
||
} else {
|
||
if (all) {
|
||
sprintf(buffer, "0x%x", (int) containerPtr->wrapper);
|
||
Tcl_DStringAppendElement(&dString, buffer);
|
||
} else {
|
||
Tcl_DStringAppendElement(&dString, "XXX");
|
||
}
|
||
}
|
||
if (containerPtr->embeddedPtr == NULL) {
|
||
Tcl_DStringAppendElement(&dString, "");
|
||
} else {
|
||
Tcl_DStringAppendElement(&dString,
|
||
containerPtr->embeddedPtr->pathName);
|
||
}
|
||
Tcl_DStringEndSublist(&dString);
|
||
}
|
||
Tcl_DStringResult(interp, &dString);
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EmbedWindowDeleted --
|
||
*
|
||
* This procedure is invoked when a window involved in embedding
|
||
* (as either the container or the embedded application) is
|
||
* destroyed. It cleans up the Container structure for the window.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* A Container structure may be freed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EmbedWindowDeleted(winPtr)
|
||
TkWindow *winPtr; /* Tk's information about window that
|
||
* was deleted. */
|
||
{
|
||
Container *containerPtr, *prevPtr;
|
||
|
||
/*
|
||
* Find the Container structure for this window work. Delete the
|
||
* information about the embedded application and free the container's
|
||
* record.
|
||
*/
|
||
|
||
prevPtr = NULL;
|
||
containerPtr = firstContainerPtr;
|
||
while (1) {
|
||
if (containerPtr->embeddedPtr == winPtr) {
|
||
containerPtr->wrapper = None;
|
||
containerPtr->embeddedPtr = NULL;
|
||
break;
|
||
}
|
||
if (containerPtr->parentPtr == winPtr) {
|
||
containerPtr->parentPtr = NULL;
|
||
break;
|
||
}
|
||
prevPtr = containerPtr;
|
||
containerPtr = containerPtr->nextPtr;
|
||
}
|
||
if ((containerPtr->embeddedPtr == NULL)
|
||
&& (containerPtr->parentPtr == NULL)) {
|
||
if (prevPtr == NULL) {
|
||
firstContainerPtr = containerPtr->nextPtr;
|
||
} else {
|
||
prevPtr->nextPtr = containerPtr->nextPtr;
|
||
}
|
||
ckfree((char *) containerPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkUnixContainerId --
|
||
*
|
||
* Given an embedded window, this procedure returns the X window
|
||
* identifier for the associated container window.
|
||
*
|
||
* Results:
|
||
* The return value is the X window identifier for winPtr's
|
||
* container window.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
Window
|
||
TkUnixContainerId(winPtr)
|
||
TkWindow *winPtr; /* Tk's structure for an embedded window. */
|
||
{
|
||
Container *containerPtr;
|
||
|
||
for (containerPtr = firstContainerPtr; containerPtr != NULL;
|
||
containerPtr = containerPtr->nextPtr) {
|
||
if (containerPtr->embeddedPtr == winPtr) {
|
||
return containerPtr->parent;
|
||
}
|
||
}
|
||
panic("TkUnixContainerId couldn't find window");
|
||
return None;
|
||
}
|