tkwinwindow.c

linux系统下的音频通信

/* 
 * tkWinWindow.c --
 *
 *	Xlib emulation routines for Windows related to creating,
 *	displaying and destroying windows.
 *
 * Copyright (c) 1995 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: @(#) tkWinWindow.c 1.23 97/07/01 18:14:13
 */

#include "tkWinInt.h"

/*
 * The windowTable maps from HWND to Tk_Window handles.
 */

static Tcl_HashTable windowTable;

/*
 * Have statics in this module been initialized?
 */

static int initialized = 0;

/*
 * Forward declarations for procedures defined in this file:
 */

static void		NotifyVisibility _ANSI_ARGS_((XEvent *eventPtr,
			    TkWindow *winPtr));
static void 		StackWindow _ANSI_ARGS_((Window w, Window sibling,
			    int stack_mode));

/*
 *----------------------------------------------------------------------
 *
 * Tk_AttachHWND --
 *
 *	This function binds an HWND and a reflection procedure to
 *	the specified Tk_Window. 
 *
 * Results:
 *	Returns an X Window that encapsulates the HWND.
 *
 * Side effects:
 *	May allocate a new X Window.  Also enters the HWND into the
 *	global window table.
 *
 *----------------------------------------------------------------------
 */

Window
Tk_AttachHWND(tkwin, hwnd)
    Tk_Window tkwin;
    HWND hwnd;
{
    int new;
    Tcl_HashEntry *entryPtr;
    TkWinDrawable *twdPtr = (TkWinDrawable *) Tk_WindowId(tkwin);

    if (!initialized) {
	Tcl_InitHashTable(&windowTable, TCL_ONE_WORD_KEYS);
	initialized = 1;
    }

    /*
     * Allocate a new drawable if necessary.  Otherwise, remove the
     * previous HWND from from the window table.
     */

    if (twdPtr == NULL) {
	twdPtr = (TkWinDrawable*) ckalloc(sizeof(TkWinDrawable));
	twdPtr->type = TWD_WINDOW;
	twdPtr->window.winPtr = (TkWindow *) tkwin;
    } else if (twdPtr->window.handle != NULL) {
	entryPtr = Tcl_FindHashEntry(&windowTable,
		(char *)twdPtr->window.handle);
	Tcl_DeleteHashEntry(entryPtr);
    }

    /*
     * Insert the new HWND into the window table.
     */

    twdPtr->window.handle = hwnd;
    entryPtr = Tcl_CreateHashEntry(&windowTable, (char *)hwnd, &new);
    Tcl_SetHashValue(entryPtr, (ClientData)tkwin);

    return (Window)twdPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_HWNDToWindow --
 *
 *	This function retrieves a Tk_Window from the window table
 *	given an HWND.
 *
 * Results:
 *	Returns the matching Tk_Window.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

Tk_Window
Tk_HWNDToWindow(hwnd)
    HWND hwnd;
{
    Tcl_HashEntry *entryPtr;
    if (!initialized) {
	Tcl_InitHashTable(&windowTable, TCL_ONE_WORD_KEYS);
	initialized = 1;
    }
    entryPtr = Tcl_FindHashEntry(&windowTable, (char*)hwnd);
    if (entryPtr != NULL) {
	return (Tk_Window) Tcl_GetHashValue(entryPtr);
    }
    return NULL;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_GetHWND --
 *
 *	This function extracts the HWND from an X Window.
 *
 * Results:
 *	Returns the HWND associated with the Window.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

HWND
Tk_GetHWND(window)
    Window window;
{
    TkWinDrawable *twdPtr = (TkWinDrawable *) window;
    return twdPtr->window.handle;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpPrintWindowId --
 *
 *	This routine stores the string representation of the
 *	platform dependent window handle for an X Window in the
 *	given buffer.
 *
 * Results:
 *	Returns the result in the specified buffer.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

void
TkpPrintWindowId(buf, window)
    char *buf;			/* Pointer to string large enough to hold
				 * the hex representation of a pointer. */
    Window window;		/* Window to be printed into buffer. */
{
    HWND hwnd = (window) ? Tk_GetHWND(window) : 0;
    sprintf(buf, "0x%x", (unsigned int) hwnd);
}

/*
 *----------------------------------------------------------------------
 *
 * TkpScanWindowId --
 *
 *	Given a string which represents the platform dependent window
 *	handle, produce the X Window id for the window.
 *
 * Results:
 *	The return value is normally TCL_OK;  in this case *idPtr
 *	will be set to the X Window id equivalent to string.  If
 *	string is improperly formed then TCL_ERROR is returned and
 *	an error message will be left in interp->result.  If the
 *	number does not correspond to a Tk Window, then *idPtr will
 *	be set to None.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

int
TkpScanWindowId(interp, string, idPtr)
    Tcl_Interp *interp;		/* Interpreter to use for error reporting. */
    char *string;		/* String containing a (possibly signed)
				 * integer in a form acceptable to strtol. */
    int *idPtr;			/* Place to store converted result. */
{
    int number;
    Tk_Window tkwin;

    if (Tcl_GetInt(interp, string, &number) != TCL_OK) {
	return TCL_ERROR;
    }
    tkwin = Tk_HWNDToWindow((HWND)number);
    if (tkwin) {
	*idPtr = Tk_WindowId(tkwin);
    } else {
	*idPtr = None;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpMakeWindow --
 *
 *	Creates a Windows window object based on the current attributes
 *	of the specified TkWindow.
 *
 * Results:
 *	Returns a pointer to a new TkWinDrawable cast to a Window.
 *
 * Side effects:
 *	Creates a new window.
 *
 *----------------------------------------------------------------------
 */

Window
TkpMakeWindow(winPtr, parent)
    TkWindow *winPtr;
    Window parent;
{
    HWND parentWin;
    int style;
    HWND hwnd;
    
    if (parent != None) {
	parentWin = Tk_GetHWND(parent);
	style = WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
    } else {
	parentWin = NULL;
	style = WS_POPUP | WS_CLIPCHILDREN;
    }

    /*
     * Create the window, then ensure that it is at the top of the
     * stacking order.
     */

    hwnd = CreateWindowEx(WS_EX_NOPARENTNOTIFY, TK_WIN_CHILD_CLASS_NAME, NULL,
	    style, Tk_X(winPtr), Tk_Y(winPtr), Tk_Width(winPtr),
	    Tk_Height(winPtr), parentWin, NULL, Tk_GetHINSTANCE(), NULL);
    SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0,
		    SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
    return Tk_AttachHWND((Tk_Window)winPtr, hwnd);
}

/*
 *----------------------------------------------------------------------
 *
 * XDestroyWindow --
 *
 *	Destroys the given window.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Sends the WM_DESTROY message to the window and then destroys
 *	it the Win32 resources associated with the window.
 *
 *----------------------------------------------------------------------
 */

void
XDestroyWindow(display, w)
    Display* display;
    Window w;
{
    Tcl_HashEntry *entryPtr;
    TkWinDrawable *twdPtr = (TkWinDrawable *)w;
    TkWindow *winPtr = TkWinGetWinPtr(w);
    HWND hwnd = Tk_GetHWND(w);

    display->request++;

    /*
     * Remove references to the window in the pointer module then
     * release the drawable.
     */

    TkPointerDeadWindow(winPtr);

    entryPtr = Tcl_FindHashEntry(&windowTable, (char*)hwnd);
    if (entryPtr != NULL) {
	Tcl_DeleteHashEntry(entryPtr);
    }

    ckfree((char *)twdPtr);

    /*
     * Don't bother destroying the window if we are going to destroy
     * the parent later.
     */

    if (hwnd != NULL && !(winPtr->flags & TK_DONT_DESTROY_WINDOW)) {
	DestroyWindow(hwnd);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * XMapWindow --
 *
 *	Cause the given window to become visible.
 *
 * Results:
 *	None
 *
 * Side effects:
 *	Causes the window state to change, and generates a MapNotify
 *	event.
 *
 *----------------------------------------------------------------------
 */

void
XMapWindow(display, w)
    Display* display;
    Window w;
{
    XEvent event;
    TkWindow *parentPtr;
    TkWindow *winPtr = TkWinGetWinPtr(w);

    display->request++;

    ShowWindow(TkWinGetHWND(w), SW_SHOWNORMAL);
    winPtr->flags |= TK_MAPPED;

    /*
     * Check to see if this window is visible now.  If all of the parent
     * windows up to the first toplevel are mapped, then this window and
     * its mapped children have just become visible.
     */

    if (!(winPtr->flags & TK_TOP_LEVEL)) {
	for (parentPtr = winPtr->parentPtr; ;
	        parentPtr = parentPtr->parentPtr) {
	    if ((parentPtr == NULL) || !(parentPtr->flags & TK_MAPPED)) {
		return;
	    }
	    if (parentPtr->flags & TK_TOP_LEVEL) {
		break;
	    }
	}
    } else {
	event.type = MapNotify;
	event.xmap.serial = display->request;
	event.xmap.send_event = False;
	event.xmap.display = display;
	event.xmap.event = winPtr->window;
	event.xmap.window = winPtr->window;
	event.xmap.override_redirect = winPtr->atts.override_redirect;
	Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
    }
    
    /*
     * Generate VisibilityNotify events for this window and its mapped
     * children.
     */

    event.type = VisibilityNotify;
    event.xvisibility.serial = display->request;
    event.xvisibility.send_event = False;
    event.xvisibility.display = display;
    event.xvisibility.window = winPtr->window;
    event.xvisibility.state = VisibilityUnobscured;
    NotifyVisibility(&event, winPtr);
}

/*
 *----------------------------------------------------------------------
 *
 * NotifyVisibility --
 *