1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #include "NativeSubWindow.h"
17
18 #include <stdio.h>
19 struct SubWindowUserData {
20 SubWindowRepaintCallback repaint_callback;
21 void* repaint_callback_param;
22 };
23
subWindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)24 static LRESULT CALLBACK subWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
25 if (uMsg == WM_PAINT) {
26 auto user_data =
27 (SubWindowUserData*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
28 if (user_data && user_data->repaint_callback) {
29 user_data->repaint_callback(user_data->repaint_callback_param);
30 }
31 } else if (uMsg == WM_NCDESTROY) {
32 SubWindowUserData* user_data =
33 (SubWindowUserData*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
34 delete user_data;
35 }
36 return DefWindowProcA(hwnd, uMsg, wParam, lParam);
37 }
38
createSubWindow(FBNativeWindowType p_window,int x,int y,int width,int height,float dpr,SubWindowRepaintCallback repaint_callback,void * repaint_callback_param,int hideWindow)39 EGLNativeWindowType createSubWindow(FBNativeWindowType p_window,
40 int x, int y,int width, int height, float dpr,
41 SubWindowRepaintCallback repaint_callback,
42 void* repaint_callback_param, int hideWindow){
43 static const char className[] = "subWin";
44
45 WNDCLASSA wc = {};
46 if (!GetClassInfoA(GetModuleHandle(NULL), className, &wc)) {
47 wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;// redraw if size changes
48 wc.lpfnWndProc = &subWindowProc; // points to window procedure
49 wc.cbWndExtra = sizeof(void*) ; // save extra window memory
50 wc.lpszClassName = className; // name of window class
51 RegisterClassA(&wc);
52 }
53
54 // We assume size/pos are passed in as logical size/coordinates. Convert it to pixel
55 // coordinates.
56 x *= dpr;
57 y *= dpr;
58 width *= dpr;
59 height *= dpr;
60 EGLNativeWindowType ret = CreateWindowExA(
61 WS_EX_NOPARENTNOTIFY, // do not bother our parent window
62 className,
63 "sub",
64 WS_CHILD|WS_DISABLED,
65 x,y,width,height,
66 p_window,
67 NULL,
68 NULL,
69 NULL);
70
71 auto user_data = new SubWindowUserData();
72 user_data->repaint_callback = repaint_callback;
73 user_data->repaint_callback_param = repaint_callback_param;
74
75 SetWindowLongPtr(ret, GWLP_USERDATA, (LONG_PTR)user_data);
76 if (!hideWindow)
77 ShowWindow(ret, SW_SHOW);
78 return ret;
79 }
80
destroySubWindow(EGLNativeWindowType win)81 void destroySubWindow(EGLNativeWindowType win){
82 PostMessage(win, WM_CLOSE, 0, 0);
83 }
84
moveSubWindow(FBNativeWindowType p_parent_window,EGLNativeWindowType p_sub_window,int x,int y,int width,int height,float dpr)85 int moveSubWindow(FBNativeWindowType p_parent_window,
86 EGLNativeWindowType p_sub_window,
87 int x,
88 int y,
89 int width,
90 int height,
91 float dpr) {
92 BOOL ret = MoveWindow(p_sub_window,
93 x * dpr,
94 y * dpr,
95 width * dpr,
96 height * dpr,
97 TRUE);
98 return ret;
99 }
100