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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "NativeSubWindow.h"
struct SubWindowUserData {
SubWindowRepaintCallback repaint_callback;
void* repaint_callback_param;
};
static LRESULT CALLBACK subWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
if (uMsg == WM_PAINT) {
auto user_data =
(SubWindowUserData*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
if (user_data && user_data->repaint_callback) {
user_data->repaint_callback(user_data->repaint_callback_param);
}
} else if (uMsg == WM_NCDESTROY) {
SubWindowUserData* user_data =
(SubWindowUserData*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
delete user_data;
}
return DefWindowProcA(hwnd, uMsg, wParam, lParam);
}
EGLNativeWindowType createSubWindow(FBNativeWindowType p_window,
int x, int y,int width, int height,
SubWindowRepaintCallback repaint_callback,
void* repaint_callback_param, int hideWindow){
static const char className[] = "subWin";
WNDCLASSA wc = {};
if (!GetClassInfoA(GetModuleHandle(NULL), className, &wc)) {
wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;// redraw if size changes
wc.lpfnWndProc = &subWindowProc; // points to window procedure
wc.cbWndExtra = sizeof(void*) ; // save extra window memory
wc.lpszClassName = className; // name of window class
RegisterClassA(&wc);
}
EGLNativeWindowType ret = CreateWindowExA(
WS_EX_NOPARENTNOTIFY, // do not bother our parent window
className,
"sub",
WS_CHILD|WS_DISABLED,
x,y,width,height,
p_window,
NULL,
NULL,
NULL);
auto user_data = new SubWindowUserData();
user_data->repaint_callback = repaint_callback;
user_data->repaint_callback_param = repaint_callback_param;
SetWindowLongPtr(ret, GWLP_USERDATA, (LONG_PTR)user_data);
if (!hideWindow)
ShowWindow(ret, SW_SHOW);
return ret;
}
void destroySubWindow(EGLNativeWindowType win){
PostMessage(win, WM_CLOSE, 0, 0);
}
int moveSubWindow(FBNativeWindowType p_parent_window,
EGLNativeWindowType p_sub_window,
int x,
int y,
int width,
int height) {
BOOL ret = MoveWindow(p_sub_window,
x,
y,
width,
height,
TRUE);
return ret;
}
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