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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ui/ozone/platform/egltest/eglplatform_shim.h"
      6 
      7 #include <string.h>
      8 #include <X11/Xlib.h>
      9 #include <X11/Xatom.h>
     10 #include <X11/Xutil.h>
     11 
     12 #ifdef __cplusplus
     13 extern "C" {
     14 #endif
     15 
     16 Display* g_display;
     17 
     18 const int kDefaultX = 0;
     19 const int kDefaultY = 0;
     20 const int kDefaultWidth = 800;
     21 const int kDefaultHeight = 600;
     22 const int kDefaultBorderWidth = 0;
     23 
     24 const char* ShimQueryString(int name) {
     25   switch (name) {
     26     case SHIM_EGL_LIBRARY:
     27       return "libEGL.so.1";
     28     case SHIM_GLES_LIBRARY:
     29       return "libGLESv2.so.2";
     30     default:
     31       return NULL;
     32   }
     33 }
     34 
     35 bool ShimInitialize(void) {
     36   g_display = XOpenDisplay(NULL);
     37   return g_display != NULL;
     38 }
     39 
     40 bool ShimTerminate(void) {
     41   XCloseDisplay(g_display);
     42   return true;
     43 }
     44 
     45 ShimNativeWindowId ShimCreateWindow(void) {
     46   XSetWindowAttributes swa;
     47   memset(&swa, 0, sizeof(swa));
     48   swa.event_mask = 0;
     49 
     50   Window window = XCreateWindow(g_display,
     51                                 DefaultRootWindow(g_display),
     52                                 kDefaultX,
     53                                 kDefaultY,
     54                                 kDefaultWidth,
     55                                 kDefaultHeight,
     56                                 kDefaultBorderWidth,
     57                                 CopyFromParent,
     58                                 InputOutput,
     59                                 CopyFromParent,
     60                                 CWEventMask,
     61                                 &swa);
     62 
     63   XMapWindow(g_display, window);
     64   XStoreName(g_display, window, "EGL test");
     65   XFlush(g_display);
     66 
     67   return window;
     68 }
     69 
     70 bool ShimQueryWindow(ShimNativeWindowId window_id, int attribute, int* value) {
     71   XWindowAttributes window_attributes;
     72   switch (attribute) {
     73     case SHIM_WINDOW_WIDTH:
     74       XGetWindowAttributes(g_display, window_id, &window_attributes);
     75       *value = window_attributes.width;
     76       return true;
     77     case SHIM_WINDOW_HEIGHT:
     78       XGetWindowAttributes(g_display, window_id, &window_attributes);
     79       *value = window_attributes.height;
     80       return true;
     81     default:
     82       return false;
     83   }
     84 }
     85 
     86 bool ShimDestroyWindow(ShimNativeWindowId window_id) {
     87   XDestroyWindow(g_display, window_id);
     88   return true;
     89 }
     90 
     91 ShimEGLNativeDisplayType ShimGetNativeDisplay(void) {
     92   return reinterpret_cast<ShimEGLNativeDisplayType>(g_display);
     93 }
     94 
     95 ShimEGLNativeWindowType ShimGetNativeWindow(
     96     ShimNativeWindowId native_window_id) {
     97   return native_window_id;
     98 }
     99 
    100 bool ShimReleaseNativeWindow(ShimEGLNativeWindowType native_window) {
    101   return true;
    102 }
    103 
    104 #ifdef __cplusplus
    105 }
    106 #endif
    107