Copy remoting notification bar to chrome and use it for screen capture API.

chrome/browser/ui/gtk/screen_capture_notification_ui_gtk.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2013 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 "remoting/host/disconnect_window.h"
+#include "chrome/browser/ui/screen_capture_notification_ui.h"
 
 #include <gtk/gtk.h>
 #include <math.h>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
-#include "remoting/host/ui_strings.h"
+#include "grit/generated_resources.h"
 #include "ui/base/gtk/gtk_signal.h"
+#include "ui/base/l10n/l10n_util.h"
 
-namespace remoting {
+class ScreenCaptureNotificationUIGtk : public ScreenCaptureNotificationUI {
+ public:
+  ScreenCaptureNotificationUIGtk();
+  virtual ~ScreenCaptureNotificationUIGtk();
 
-class DisconnectWindowGtk : public DisconnectWindow {
- public:
-  explicit DisconnectWindowGtk(const UiStrings* ui_strings);
-  virtual ~DisconnectWindowGtk();
-
-  virtual bool Show(const base::Closure& disconnect_callback,
-                    const std::string& username) OVERRIDE;
-  virtual void Hide() OVERRIDE;
+  // ScreenCaptureNotificationUI interface
+  virtual bool Show(const base::Closure& stop_callback,
+                    const string16& page_title) OVERRIDE;
 
  private:
-  CHROMEGTK_CALLBACK_1(DisconnectWindowGtk, gboolean, OnDelete, GdkEvent*);
-  CHROMEGTK_CALLBACK_0(DisconnectWindowGtk, void, OnClicked);
-  CHROMEGTK_CALLBACK_1(DisconnectWindowGtk, gboolean, OnConfigure,
+  CHROMEGTK_CALLBACK_1(ScreenCaptureNotificationUIGtk, gboolean, OnDelete,
+                       GdkEvent*);
+  CHROMEGTK_CALLBACK_0(ScreenCaptureNotificationUIGtk, void, OnClicked);
+  CHROMEGTK_CALLBACK_1(ScreenCaptureNotificationUIGtk, gboolean, OnConfigure,
                        GdkEventConfigure*);
-  CHROMEGTK_CALLBACK_1(DisconnectWindowGtk, gboolean, OnButtonPress,
+  CHROMEGTK_CALLBACK_1(ScreenCaptureNotificationUIGtk, gboolean, OnButtonPress,
                        GdkEventButton*);
 
-  void CreateWindow();
+  void CreateWindow(const string16& title);
+  void HideWindow();
 
-  base::Closure disconnect_callback_;
-  GtkWidget* disconnect_window_;
+  base::Closure stop_callback_;
+  GtkWidget* window_;
   GtkWidget* message_;
   GtkWidget* button_;
 
   // Used to distinguish resize events from other types of "configure-event"
   // notifications.
   int current_width_;
   int current_height_;
 
-  // Points to the localized strings.
-  const UiStrings* ui_strings_;
-
-  DISALLOW_COPY_AND_ASSIGN(DisconnectWindowGtk);
+  DISALLOW_COPY_AND_ASSIGN(ScreenCaptureNotificationUIGtk);
 };
 
-DisconnectWindowGtk::DisconnectWindowGtk(const UiStrings* ui_strings)
-    : disconnect_window_(NULL),
+ScreenCaptureNotificationUIGtk::ScreenCaptureNotificationUIGtk()
+    : window_(NULL),
       current_width_(0),
-      current_height_(0),
-      ui_strings_(ui_strings) {
+      current_height_(0) {
 }
 
-DisconnectWindowGtk::~DisconnectWindowGtk() {
-  Hide();
+ScreenCaptureNotificationUIGtk::~ScreenCaptureNotificationUIGtk() {
+  HideWindow();
 }
 
-void DisconnectWindowGtk::CreateWindow() {
-  if (disconnect_window_)
+void ScreenCaptureNotificationUIGtk::CreateWindow(const string16& title) {
+  if (window_)
     return;
 
-  disconnect_window_ = gtk_window_new(GTK_WINDOW_TOPLEVEL);
-  GtkWindow* window = GTK_WINDOW(disconnect_window_);
+  window_ = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+  GtkWindow* window = GTK_WINDOW(window_);
 
-  g_signal_connect(disconnect_window_, "delete-event",
-                   G_CALLBACK(OnDeleteThunk), this);
-  gtk_window_set_title(window, UTF16ToUTF8(ui_strings_->product_name).c_str());
+  g_signal_connect(window_, "delete-event", G_CALLBACK(OnDeleteThunk), this);
+  std::string window_title =
+      l10n_util::GetStringFUTF8(IDS_MEDIA_SCREEN_CAPTURE_NOTIFICATION_TITLE,
+                                title);
+  gtk_window_set_title(window, window_title.c_str());
   gtk_window_set_resizable(window, FALSE);
 
   // Try to keep the window always visible.
   gtk_window_stick(window);
   gtk_window_set_keep_above(window, TRUE);
 
   // Remove window titlebar.
   gtk_window_set_decorated(window, FALSE);
 
   // In case the titlebar is still there, try to remove some of the buttons.
   // Utility windows have no minimize button or taskbar presence.
   gtk_window_set_type_hint(window, GDK_WINDOW_TYPE_HINT_UTILITY);
   gtk_window_set_deletable(window, FALSE);
 
   // Allow custom rendering of the background pixmap.
-  gtk_widget_set_app_paintable(disconnect_window_, TRUE);
+  gtk_widget_set_app_paintable(window_, TRUE);
 
   // Handle window resizing, to regenerate the background pixmap and window
   // shape bitmap.  The stored width & height need to be initialized here
   // in case the window is created a second time (the size of the previous
   // window would be remembered, preventing the generation of bitmaps for the
   // new window).
   current_height_ = current_width_ = 0;
-  g_signal_connect(disconnect_window_, "configure-event",
+  g_signal_connect(window_, "configure-event",
                    G_CALLBACK(OnConfigureThunk), this);
 
   // Handle mouse events to allow the user to drag the window around.
-  gtk_widget_set_events(disconnect_window_, GDK_BUTTON_PRESS_MASK);
-  g_signal_connect(disconnect_window_, "button-press-event",
+  gtk_widget_set_events(window_, GDK_BUTTON_PRESS_MASK);
+  g_signal_connect(window_, "button-press-event",
                    G_CALLBACK(OnButtonPressThunk), this);
 
   // All magic numbers taken from screen shots provided by UX.
   // The alignment sets narrow margins at the top and bottom, compared with
   // left and right.  The left margin is made larger to accommodate the
   // window movement gripper.
   GtkWidget* align = gtk_alignment_new(0, 0, 1, 1);
   gtk_alignment_set_padding(GTK_ALIGNMENT(align), 8, 8, 24, 12);
   gtk_container_add(GTK_CONTAINER(window), align);
 
   GtkWidget* button_row = gtk_hbox_new(FALSE, 12);
   gtk_container_add(GTK_CONTAINER(align), button_row);
 
-  button_ = gtk_button_new_with_label(
-      UTF16ToUTF8(ui_strings_->disconnect_button_text).c_str());
+  std::string button_label =
+      l10n_util::GetStringUTF8(IDS_MEDIA_SCREEN_CAPTURE_NOTIFICATION_STOP);
+  button_ = gtk_button_new_with_label(button_label.c_str());
   gtk_box_pack_end(GTK_BOX(button_row), button_, FALSE, FALSE, 0);
 
   g_signal_connect(button_, "clicked", G_CALLBACK(OnClickedThunk), this);
 
   message_ = gtk_label_new(NULL);
   gtk_box_pack_end(GTK_BOX(button_row), message_, FALSE, FALSE, 0);
 
   // Override any theme setting for the text color, so that the text is
   // readable against the window's background pixmap.
   PangoAttrList* attributes = pango_attr_list_new();
   PangoAttribute* text_color = pango_attr_foreground_new(0, 0, 0);
   pango_attr_list_insert(attributes, text_color);
   gtk_label_set_attributes(GTK_LABEL(message_), attributes);
 
-  gtk_widget_show_all(disconnect_window_);
+  std::string text = l10n_util::GetStringFUTF8(
+      IDS_MEDIA_SCREEN_CAPTURE_NOTIFICATION_TEXT, title);
+  gtk_label_set_text(GTK_LABEL(message_), text.c_str());
+
+  gtk_widget_show_all(window_);
+  gtk_window_present(GTK_WINDOW(window_));
 }
 
-bool DisconnectWindowGtk::Show(const base::Closure& disconnect_callback,
-                               const std::string& username) {
-  DCHECK(disconnect_callback_.is_null());
-  DCHECK(!disconnect_callback.is_null());
-  DCHECK(!disconnect_window_);
+bool ScreenCaptureNotificationUIGtk::Show(const base::Closure& stop_callback,
+                                          const string16& title) {
+  DCHECK(stop_callback_.is_null());
+  DCHECK(!stop_callback.is_null());
+  DCHECK(!window_);
 
-  disconnect_callback_ = disconnect_callback;
-  CreateWindow();
+  stop_callback_ = stop_callback;
+  CreateWindow(title);
 
-  string16 text = ReplaceStringPlaceholders(
-      ui_strings_->disconnect_message, UTF8ToUTF16(username), NULL);
-  gtk_label_set_text(GTK_LABEL(message_), UTF16ToUTF8(text).c_str());
-  gtk_window_present(GTK_WINDOW(disconnect_window_));
   return true;
 }
 
-void DisconnectWindowGtk::Hide() {
-  if (disconnect_window_) {
-    gtk_widget_destroy(disconnect_window_);
-    disconnect_window_ = NULL;
+void ScreenCaptureNotificationUIGtk::HideWindow() {
+  if (window_) {
+    gtk_widget_destroy(window_);
+    window_ = NULL;
   }
 
-  disconnect_callback_.Reset();
+  stop_callback_.Reset();
 }
 
-void DisconnectWindowGtk::OnClicked(GtkWidget* button) {
-  disconnect_callback_.Run();
-  Hide();
+void ScreenCaptureNotificationUIGtk::OnClicked(GtkWidget* button) {
+  stop_callback_.Run();
+  HideWindow();
 }
 
-gboolean DisconnectWindowGtk::OnDelete(GtkWidget* window, GdkEvent* event) {
-  disconnect_callback_.Run();
-  Hide();
+gboolean ScreenCaptureNotificationUIGtk::OnDelete(
+    GtkWidget* window, GdkEvent* event) {
+  stop_callback_.Run();
+  HideWindow();
 
   return TRUE;
 }
 
 namespace {
 // Helper function for creating a rectangular path with rounded corners, as
 // Cairo doesn't have this facility.  |radius| is the arc-radius of each
 // corner.  The bounding rectangle extends from (0, 0) to (width, height).
 void AddRoundRectPath(cairo_t* cairo_context, int width, int height,
                       int radius) {
   cairo_new_sub_path(cairo_context);
   cairo_arc(cairo_context, width - radius, radius, radius, -M_PI_2, 0);
   cairo_arc(cairo_context, width - radius, height - radius, radius, 0, M_PI_2);
   cairo_arc(cairo_context, radius, height - radius, radius, M_PI_2, 2 * M_PI_2);
   cairo_arc(cairo_context, radius, radius, radius, 2 * M_PI_2, 3 * M_PI_2);
   cairo_close_path(cairo_context);
 }
 
 }  // namespace
 
-gboolean DisconnectWindowGtk::OnConfigure(GtkWidget* widget,
-                                            GdkEventConfigure* event) {
+gboolean ScreenCaptureNotificationUIGtk::OnConfigure(GtkWidget* widget,
+                                                     GdkEventConfigure* event) {
   // Only generate bitmaps if the size has actually changed.
   if (event->width == current_width_ && event->height == current_height_)
     return FALSE;
 
   current_width_ = event->width;
   current_height_ = event->height;
 
   // Create the depth 1 pixmap for the window shape.
-  GdkPixmap* shape_mask = gdk_pixmap_new(NULL, current_width_, current_height_,
-                                         1);
+  GdkPixmap* shape_mask =
+      gdk_pixmap_new(NULL, current_width_, current_height_, 1);
   cairo_t* cairo_context = gdk_cairo_create(shape_mask);
 
   // Set the arc radius for the corners.
   const int kCornerRadius = 6;
 
   // Initialize the whole bitmap to be transparent.
   cairo_set_source_rgba(cairo_context, 0, 0, 0, 0);
   cairo_set_operator(cairo_context, CAIRO_OPERATOR_SOURCE);
   cairo_paint(cairo_context);
 
   // Paint an opaque round rect covering the whole area (leaving the extreme
   // corners transparent).
   cairo_set_source_rgba(cairo_context, 1, 1, 1, 1);
   cairo_set_operator(cairo_context, CAIRO_OPERATOR_SOURCE);
   AddRoundRectPath(cairo_context, current_width_, current_height_,
                    kCornerRadius);
   cairo_fill(cairo_context);
 
   cairo_destroy(cairo_context);
   gdk_window_shape_combine_mask(widget->window, shape_mask, 0, 0);
   g_object_unref(shape_mask);
 
   // Create a full-color pixmap for the window background image.
-  GdkPixmap* background = gdk_pixmap_new(NULL, current_width_, current_height_,
-                                         24);
+  GdkPixmap* background =
+      gdk_pixmap_new(NULL, current_width_, current_height_, 24);
   cairo_context = gdk_cairo_create(background);
 
   // Paint the whole bitmap one color.
   cairo_set_source_rgb(cairo_context, 0.91, 0.91, 0.91);
   cairo_paint(cairo_context);
 
   // Paint the round-rectangle edge.
   cairo_set_source_rgb(cairo_context, 0.13, 0.69, 0.11);
   cairo_set_line_width(cairo_context, 6);
   AddRoundRectPath(cairo_context, current_width_, current_height_,
@@ skipping 29 matching lines @@
 
   cairo_destroy(cairo_context);
 
   gdk_window_set_back_pixmap(widget->window, background, FALSE);
   g_object_unref(background);
   gdk_window_invalidate_rect(widget->window, NULL, TRUE);
 
   return FALSE;
 }
 
-gboolean DisconnectWindowGtk::OnButtonPress(GtkWidget* widget,
+gboolean ScreenCaptureNotificationUIGtk::OnButtonPress(GtkWidget* widget,
                                               GdkEventButton* event) {
-  gtk_window_begin_move_drag(GTK_WINDOW(disconnect_window_),
+  gtk_window_begin_move_drag(GTK_WINDOW(window_),
                              event->button,
                              event->x_root,
                              event->y_root,
                              event->time);
   return FALSE;
 }
 
-scoped_ptr<DisconnectWindow> DisconnectWindow::Create(
-    const UiStrings* ui_strings) {
-  return scoped_ptr<DisconnectWindow>(new DisconnectWindowGtk(ui_strings));
+scoped_ptr<ScreenCaptureNotificationUI> ScreenCaptureNotificationUI::Create() {
+  return scoped_ptr<ScreenCaptureNotificationUI>(
+      new ScreenCaptureNotificationUIGtk());
 }
-
-}  // namespace remoting