Benchmark tool for GPU-accelerated video rendering

media/tools/shader_bench/window_linux.cc

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/tools/shader_bench/window.h"
+
+#include "base/task.h"
+#include "media/tools/shader_bench/painter.h"
+
+#include <gdk/gdkx.h>
+#include <gtk/gtk.h>
+
+namespace {
+
+gboolean OnDelete(GtkWidget* widget, GdkEventExpose* event) {
+  gtk_main_quit();
+  return FALSE;
+}
+
+gboolean OnExpose(GtkWidget* widget, GdkEventExpose* event, gpointer data) {
+  media::Window* window = reinterpret_cast<media::Window*>(data);
+  if (window)
+    window->OnPaint();
+  return FALSE;
+}
+
+}  // namespace
+
+namespace media {
+
+gfx::NativeWindow Window::CreateNativeWindow(int width, int height) {
+  GtkWidget* hwnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+
+  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() {
+  return GDK_WINDOW_XWINDOW(GTK_WIDGET(window_handle_)->window);
+}
+
+void Window::Start(int limit, Task* done_task, Painter* painter) {
+  running_ = true;
+  count_ = 0;
+  limit_ = limit;
+  done_task_ = done_task;
+  painter_ = painter;
+
+  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_widget_queue_draw(GTK_WIDGET(window_handle_));
+  MainLoop();
+}
+
+void Window::OnPaint() {
+  if (!running_)
+    return;
+
+  if (count_ < limit_) {
+    painter_->OnPaint();
+    count_++;
+    gtk_widget_queue_draw(GTK_WIDGET(window_handle_));
+  } else {
+    running_ = false;
+    if (done_task_) {
+      done_task_->Run();
+      delete done_task_;
+    }
+    gtk_main_quit();
+  }
+}
+
+void Window::MainLoop() {
+  gtk_main();
+}
+
+}  // namespace media