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126 lines
3.7 KiB
126 lines
3.7 KiB
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "NativeSubWindow.h"
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#include "apigen-codec-common/X11Support.h"
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#include <stdio.h>
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static Bool WaitForMapNotify(Display *d, XEvent *e, char *arg) {
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if (e->type == MapNotify && e->xmap.window == (Window)arg) {
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return 1;
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}
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return 0;
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}
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static Bool WaitForConfigureNotify(Display *d, XEvent *e, char *arg) {
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if (e->type == ConfigureNotify && e->xmap.window == (Window)arg) {
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return 1;
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}
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return 0;
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}
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static Display *s_display = NULL;
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EGLNativeWindowType createSubWindow(FBNativeWindowType p_window,
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int x,
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int y,
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int width,
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int height,
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SubWindowRepaintCallback repaint_callback,
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void* repaint_callback_param,
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int hideWindow) {
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auto x11 = getX11Api();
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// The call to this function is protected by a lock
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// in FrameBuffer so it is safe to check and initialize s_display here
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if (!s_display) {
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s_display = x11->XOpenDisplay(NULL);
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}
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XSetWindowAttributes wa;
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wa.event_mask = StructureNotifyMask;
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wa.override_redirect = True;
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Window win = x11->XCreateWindow(s_display,
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p_window,
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x,
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y,
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width,
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height,
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0,
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CopyFromParent,
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CopyFromParent,
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CopyFromParent,
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CWEventMask,
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&wa);
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if (!hideWindow) {
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x11->XMapWindow(s_display,win);
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x11->XSetWindowBackground(s_display, win, BlackPixel(s_display, 0));
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XEvent e;
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x11->XIfEvent(s_display, &e, WaitForMapNotify, (char *)win);
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}
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return win;
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}
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void destroySubWindow(EGLNativeWindowType win) {
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if (!s_display) {
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return;
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}
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getX11Api()->XDestroyWindow(s_display, win);
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}
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int moveSubWindow(FBNativeWindowType p_parent_window,
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EGLNativeWindowType p_sub_window,
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int x,
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int y,
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int width,
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int height) {
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// This value is set during create, so if it is still null, simply
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// return because the global state is corrupted
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if (!s_display) {
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return false;
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}
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auto x11 = getX11Api();
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// Make sure something has changed, otherwise XIfEvent will block and
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// freeze the emulator.
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XWindowAttributes attrs;
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if (!x11->XGetWindowAttributes(s_display, p_sub_window, &attrs)) {
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return false;
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}
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if (x == attrs.x && y == attrs.y &&
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width == attrs.width && height == attrs.height) {
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// Technically, resizing was a success because it was unneeded.
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return true;
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}
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// This prevents flicker on resize.
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x11->XSetWindowBackgroundPixmap(s_display, p_sub_window, None);
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int ret = x11->XMoveResizeWindow(
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s_display,
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p_sub_window,
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x,
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y,
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width,
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height);
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XEvent e;
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x11->XIfEvent(s_display, &e, WaitForConfigureNotify, (char *)p_sub_window);
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return ret;
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}
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