Implemented window class on linux. Standalone demos are working on linux now.

Review URL: http://codereview.chromium.org/565041

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@38106 0039d316-1c4b-4281-b951-d872f2087c98

gpu/demos/demos.gyp

@@ -43,17 +43,22 @@
         '../gpu.gyp:command_buffer_service',
       ],
       'sources': [
+        'framework/main_exe.cc',
         'framework/window.cc',
         'framework/window.h',
       ],
       'conditions': [
-        ['OS=="linux"', {'sources': ['framework/window_linux.cc']}],
-        ['OS=="mac"', {'sources': ['framework/window_mac.mm']}],
-        ['OS=="win"', {'sources': ['framework/window_win.cc']}],
+        ['OS=="linux"', {
+          'sources': ['framework/window_linux.cc'],
+          'dependencies': ['../../build/linux/system.gyp:gtk'],
+        }],
+        ['OS=="mac"', {
+          'sources': ['framework/window_mac.mm'],
+        }],
+        ['OS=="win"', {
+          'sources': ['framework/window_win.cc'],
+        }],
       ],
-      'direct_dependent_settings': {
-        'sources': ['framework/main_exe.cc'],
-      },
     },
     {
       'target_name': 'gpu_demo_framework_pepper',

gpu/demos/framework/main_exe.cc

@@ -6,12 +6,20 @@
 #include "base/logging.h"
 #include "gpu/demos/framework/window.h"
 
+#if defined(OS_LINUX)
+#include <gtk/gtk.h>
+#endif  // OS_LINUX
+
 namespace {
 static const int kWindowWidth = 512;
 static const int kWindowHeight = 512;
 }  // namespace.
 
 int main(int argc, char *argv[]) {
+#if defined(OS_LINUX)
+  gtk_init(&argc, &argv);
+#endif  // OS_LINUX
+
   // AtExitManager is used by singleton classes to delete themselves when
   // the program terminates.
   base::AtExitManager at_exit_manager_;
@@ -22,3 +30,4 @@ int main(int argc, char *argv[]) {
   window.MainLoop();
   return EXIT_SUCCESS;
 }
+

gpu/demos/framework/window_linux.cc

@@ -4,19 +4,60 @@
 
 #include "gpu/demos/framework/window.h"
 
+#include <gdk/gdkx.h>
+#include <gtk/gtk.h>
+
+#include "base/utf_string_conversions.h"
+
+namespace {
+using gpu::demos::Window;
+
+gboolean OnDelete(GtkWidget* widget, GdkEventExpose* event) {
+  gtk_main_quit();
+  return FALSE;
+}
+
+gboolean OnExpose(GtkWidget* widget, GdkEventExpose* event, gpointer data) {
+  Window* window = static_cast<Window*>(data);
+  window->OnPaint();
+
+  // TODO(alokp): Figure out why this is crashing. Animation will not work
+  // until then.
+  //gtk_widget_queue_draw(widget);
+  return FALSE;
+}
+}  // namespace
+
 namespace gpu {
 namespace demos {
 
 void Window::MainLoop() {
+  gtk_signal_connect(GTK_OBJECT(window_handle_),
+                     "delete_event",
+                     reinterpret_cast<GtkSignalFunc>(OnDelete),
+                     NULL);
+  gtk_signal_connect(GTK_OBJECT(window_handle_),
+                     "expose_event",
+                     reinterpret_cast<GtkSignalFunc>(OnExpose),
+                     this);
+  gtk_main();
 }
 
 gfx::NativeWindow Window::CreateNativeWindow(const wchar_t* title,
                                              int width, int height) {
-  return NULL;
+  GtkWidget* hwnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+
+  gtk_window_set_title(GTK_WINDOW(hwnd), WideToUTF8(title).c_str());
+  gtk_window_set_default_size(GTK_WINDOW(hwnd), width, height);
+  gtk_widget_set_double_buffered(hwnd, FALSE);
+  gtk_widget_set_app_paintable(hwnd, TRUE);
+
+  gtk_widget_show(hwnd);
+  return GTK_WINDOW(hwnd);
 }
 
 gfx::PluginWindowHandle Window::PluginWindow(gfx::NativeWindow hwnd) {
-  return gfx::kNullPluginWindow;
+  return GDK_WINDOW_XWINDOW(GTK_WIDGET(hwnd)->window);
 }
 
 }  // namespace demos