Initial work

external/android-emugl/host/libs/libOpenglRender/NativeSubWindow_win32.cpp

@@ -0,0 +1,90 @@
+/*
+* 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 DefWindowProc(hwnd, uMsg, wParam, lParam);
+}
+
+EGLNativeWindowType createSubWindow(FBNativeWindowType p_window,
+                                    int x, int y,int width, int height,
+                                    SubWindowRepaintCallback repaint_callback,
+                                    void* repaint_callback_param){
+    static const char className[] = "subWin";
+
+    WNDCLASS wc = {};
+    if (!GetClassInfo(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
+        RegisterClass(&wc);
+    }
+
+    EGLNativeWindowType ret = CreateWindowEx(
+                        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);
+    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;
+}