tkwinwindow.c

linux系统下的音频通信

 *	This function recursively notifies the mapped children of the
 *	specified window of a change in visibility.  Note that we don't
 *	properly report the visibility state, since Windows does not
 *	provide that info.  The eventPtr argument must point to an event
 *	that has been completely initialized except for the window slot.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Generates lots of events.
 *
 *----------------------------------------------------------------------
 */

static void
NotifyVisibility(eventPtr, winPtr)
    XEvent *eventPtr;		/* Initialized VisibilityNotify event. */
    TkWindow *winPtr;		/* Window to notify. */
{
    if (winPtr->atts.event_mask & VisibilityChangeMask) {
	eventPtr->xvisibility.window = winPtr->window;
	Tk_QueueWindowEvent(eventPtr, TCL_QUEUE_TAIL);
    }
    for (winPtr = winPtr->childList; winPtr != NULL; 
	    winPtr = winPtr->nextPtr) {
	if (winPtr->flags & TK_MAPPED) {
	    NotifyVisibility(eventPtr, winPtr);
	}
    }
}

/*
 *----------------------------------------------------------------------
 *
 * XUnmapWindow --
 *
 *	Cause the given window to become invisible.
 *
 * Results:
 *	None
 *
 * Side effects:
 *	Causes the window state to change, and generates an UnmapNotify
 *	event.
 *
 *----------------------------------------------------------------------
 */

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

    display->request++;

    /*
     * Bug fix: Don't short circuit this routine based on TK_MAPPED because
     * it will be cleared before XUnmapWindow is called.
     */

    ShowWindow(TkWinGetHWND(w), SW_HIDE);
    winPtr->flags &= ~TK_MAPPED;

    if (winPtr->flags & TK_TOP_LEVEL) {
	event.type = UnmapNotify;
	event.xunmap.serial = display->request;
	event.xunmap.send_event = False;
	event.xunmap.display = display;
	event.xunmap.event = winPtr->window;
	event.xunmap.window = winPtr->window;
	event.xunmap.from_configure = False;
	Tk_HandleEvent(&event);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * XMoveResizeWindow --
 *
 *	Move and resize a window relative to its parent.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Repositions and resizes the specified window.
 *
 *----------------------------------------------------------------------
 */

void
XMoveResizeWindow(display, w, x, y, width, height)
    Display* display;
    Window w;
    int x;			/* Position relative to parent. */
    int y;
    unsigned int width;
    unsigned int height;
{
    display->request++;
    MoveWindow(TkWinGetHWND(w), x, y, width, height, TRUE);
}

/*
 *----------------------------------------------------------------------
 *
 * XMoveWindow --
 *
 *	Move a window relative to its parent.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Repositions the specified window.
 *
 *----------------------------------------------------------------------
 */

void
XMoveWindow(display, w, x, y)
    Display* display;
    Window w;
    int x;
    int y;
{
    TkWindow *winPtr = TkWinGetWinPtr(w);

    display->request++;

    MoveWindow(TkWinGetHWND(w), x, y, winPtr->changes.width,
	    winPtr->changes.height, TRUE);
}

/*
 *----------------------------------------------------------------------
 *
 * XResizeWindow --
 *
 *	Resize a window.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Resizes the specified window.
 *
 *----------------------------------------------------------------------
 */

void
XResizeWindow(display, w, width, height)
    Display* display;
    Window w;
    unsigned int width;
    unsigned int height;
{
    TkWindow *winPtr = TkWinGetWinPtr(w);

    display->request++;

    MoveWindow(TkWinGetHWND(w), winPtr->changes.x, winPtr->changes.y, width,
	    height, TRUE);
}

/*
 *----------------------------------------------------------------------
 *
 * XRaiseWindow --
 *
 *	Change the stacking order of a window.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Changes the stacking order of the specified window.
 *
 *----------------------------------------------------------------------
 */

void
XRaiseWindow(display, w)
    Display* display;
    Window w;
{
    HWND window = TkWinGetHWND(w);

    display->request++;
    SetWindowPos(window, HWND_TOPMOST, 0, 0, 0, 0,
	    SWP_NOMOVE | SWP_NOSIZE);
}

/*
 *----------------------------------------------------------------------
 *
 * XConfigureWindow --
 *
 *	Change the size, position, stacking, or border of the specified
 *	window.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Changes the attributes of the specified window.  Note that we
 *	ignore the passed in values and use the values stored in the
 *	TkWindow data structure.
 *
 *----------------------------------------------------------------------
 */

void
XConfigureWindow(display, w, value_mask, values)
    Display* display;
    Window w;
    unsigned int value_mask;
    XWindowChanges* values;
{
    TkWindow *winPtr = TkWinGetWinPtr(w);
    HWND hwnd = TkWinGetHWND(w);

    display->request++;

    /*
     * Change the shape and/or position of the window.
     */

    if (value_mask & (CWX|CWY|CWWidth|CWHeight)) {
	MoveWindow(hwnd, winPtr->changes.x, winPtr->changes.y,
		winPtr->changes.width, winPtr->changes.height, TRUE);
    }

    /*
     * Change the stacking order of the window.
     */

    if (value_mask & CWStackMode) {
	HWND sibling;
	if ((value_mask & CWSibling) && (values->sibling != None)) {
	    sibling = Tk_GetHWND(values->sibling);
	} else {
	    sibling = NULL;
	}
	TkWinSetWindowPos(hwnd, sibling, values->stack_mode);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * XClearWindow --
 *
 *	Clears the entire window to the current background color.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Erases the current contents of the window.
 *
 *----------------------------------------------------------------------
 */

void
XClearWindow(display, w)
    Display* display;
    Window w;
{
    RECT rc;
    HBRUSH brush;
    HPALETTE oldPalette, palette;
    TkWindow *winPtr;
    HWND hwnd = TkWinGetHWND(w);
    HDC dc = GetDC(hwnd);

    palette = TkWinGetPalette(display->screens[0].cmap);
    oldPalette = SelectPalette(dc, palette, FALSE);

    display->request++;

    winPtr = TkWinGetWinPtr(w);
    brush = CreateSolidBrush(winPtr->atts.background_pixel);
    GetWindowRect(hwnd, &rc);
    rc.right = rc.right - rc.left;
    rc.bottom = rc.bottom - rc.top;
    rc.left = rc.top = 0;
    FillRect(dc, &rc, brush);

    DeleteObject(brush);
    SelectPalette(dc, oldPalette, TRUE);
    ReleaseDC(hwnd, dc);
}

/*
 *----------------------------------------------------------------------
 *
 * XChangeWindowAttributes --
 *
 *	This function is called when the attributes on a window are
 *	updated.  Since Tk maintains all of the window state, the only
 *	relevant value is the cursor.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	May cause the mouse position to be updated.
 *
 *----------------------------------------------------------------------
 */

void
XChangeWindowAttributes(display, w, valueMask, attributes)
    Display* display;
    Window w;
    unsigned long valueMask;
    XSetWindowAttributes* attributes;
{
    if (valueMask & CWCursor) {
	XDefineCursor(display, w, attributes->cursor);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkWinSetWindowPos --
 *
 *	Adjust the stacking order of a window relative to a second
 *	window (or NULL).
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Moves the specified window in the stacking order.
 *
 *----------------------------------------------------------------------
 */

void
TkWinSetWindowPos(hwnd, siblingHwnd, pos)
    HWND hwnd;			/* Window to restack. */
    HWND siblingHwnd;		/* Sibling window. */
    int pos;			/* One of Above or Below. */
{
    HWND temp;

    /*
     * Since Windows does not support Above mode, we place the
     * specified window below the sibling and then swap them.
     */

    if (siblingHwnd) {
	if (pos == Above) {
	    SetWindowPos(hwnd, siblingHwnd, 0, 0, 0, 0,
		    SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
	    temp = hwnd;
	    hwnd = siblingHwnd;
	    siblingHwnd = temp;
	}
    } else {
	siblingHwnd = (pos == Above) ? HWND_TOP : HWND_BOTTOM;
    }

    SetWindowPos(hwnd, siblingHwnd, 0, 0, 0, 0,
	    SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
}

/*
 *----------------------------------------------------------------------
 *
 * TkpWindowWasRecentlyDeleted --
 *
 *	Determines whether we know if the window given as argument was
 *	recently deleted. Called by the generic code error handler to
 *	handle BadWindow events.
 *
 * Results:
 *	Always 0. We do not keep this information on Windows.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

int
TkpWindowWasRecentlyDeleted(win, dispPtr)
    Window win;
    TkDisplay *dispPtr;
{
    return 0;
}