Move chrome/browser/gtk/ to chrome/browser/ui/gtk/...

chrome/browser/gtk/custom_button.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 "chrome/browser/gtk/custom_button.h"
-
-#include "app/resource_bundle.h"
-#include "base/basictypes.h"
-#include "chrome/browser/gtk/cairo_cached_surface.h"
-#include "chrome/browser/gtk/gtk_chrome_button.h"
-#include "chrome/browser/gtk/gtk_theme_provider.h"
-#include "chrome/browser/gtk/gtk_util.h"
-#include "chrome/common/notification_service.h"
-#include "gfx/gtk_util.h"
-#include "gfx/skbitmap_operations.h"
-#include "grit/theme_resources.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-CustomDrawButtonBase::CustomDrawButtonBase(GtkThemeProvider* theme_provider,
-                                           int normal_id,
-                                           int pressed_id,
-                                           int hover_id,
-                                           int disabled_id)
-    : background_image_(NULL),
-      paint_override_(-1),
-      normal_id_(normal_id),
-      pressed_id_(pressed_id),
-      hover_id_(hover_id),
-      disabled_id_(disabled_id),
-      theme_provider_(theme_provider),
-      flipped_(false) {
-  for (int i = 0; i < (GTK_STATE_INSENSITIVE + 1); ++i)
-    surfaces_[i].reset(new CairoCachedSurface);
-  background_image_.reset(new CairoCachedSurface);
-
-  if (theme_provider) {
-    // Load images by pretending that we got a BROWSER_THEME_CHANGED
-    // notification.
-    theme_provider->InitThemesFor(this);
-
-    registrar_.Add(this,
-                   NotificationType::BROWSER_THEME_CHANGED,
-                   NotificationService::AllSources());
-  } else {
-    // Load the button images from the resource bundle.
-    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-    surfaces_[GTK_STATE_NORMAL]->UsePixbuf(
-        normal_id_ ? rb.GetRTLEnabledPixbufNamed(normal_id_) : NULL);
-    surfaces_[GTK_STATE_ACTIVE]->UsePixbuf(
-        pressed_id_ ? rb.GetRTLEnabledPixbufNamed(pressed_id_) : NULL);
-    surfaces_[GTK_STATE_PRELIGHT]->UsePixbuf(
-        hover_id_ ? rb.GetRTLEnabledPixbufNamed(hover_id_) : NULL);
-    surfaces_[GTK_STATE_SELECTED]->UsePixbuf(NULL);
-    surfaces_[GTK_STATE_INSENSITIVE]->UsePixbuf(
-        disabled_id_ ? rb.GetRTLEnabledPixbufNamed(disabled_id_) : NULL);
-  }
-}
-
-CustomDrawButtonBase::~CustomDrawButtonBase() {
-}
-
-int CustomDrawButtonBase::Width() const {
-  return surfaces_[0]->Width();
-}
-
-int CustomDrawButtonBase::Height() const {
-  return surfaces_[0]->Height();
-}
-
-gboolean CustomDrawButtonBase::OnExpose(GtkWidget* widget,
-                                        GdkEventExpose* e,
-                                        gdouble hover_state) {
-  int paint_state = paint_override_ >= 0 ?
-                    paint_override_ : GTK_WIDGET_STATE(widget);
-
-  // If the paint state is PRELIGHT then set it to NORMAL (we will paint the
-  // hover state according to |hover_state_|).
-  if (paint_state == GTK_STATE_PRELIGHT)
-    paint_state = GTK_STATE_NORMAL;
-  bool animating_hover = hover_state > 0.0 &&
-      paint_state == GTK_STATE_NORMAL;
-  CairoCachedSurface* pixbuf = PixbufForState(paint_state);
-  CairoCachedSurface* hover_pixbuf = PixbufForState(GTK_STATE_PRELIGHT);
-
-  if (!pixbuf || !pixbuf->valid())
-    return FALSE;
-  if (animating_hover && (!hover_pixbuf || !hover_pixbuf->valid()))
-    return FALSE;
-
-  cairo_t* cairo_context = gdk_cairo_create(GDK_DRAWABLE(widget->window));
-  cairo_translate(cairo_context, widget->allocation.x, widget->allocation.y);
-
-  if (flipped_) {
-    // Horizontally flip the image for non-LTR/RTL reasons.
-    cairo_translate(cairo_context, widget->allocation.width, 0.0f);
-    cairo_scale(cairo_context, -1.0f, 1.0f);
-  }
-
-  // The widget might be larger than the pixbuf. Paint the pixbuf flush with the
-  // start of the widget (left for LTR, right for RTL) and its bottom.
-  gfx::Rect bounds = gfx::Rect(0, 0, pixbuf->Width(), 0);
-  int x = gtk_util::MirroredLeftPointForRect(widget, bounds);
-  int y = widget->allocation.height - pixbuf->Height();
-
-  if (background_image_->valid()) {
-    background_image_->SetSource(cairo_context, x, y);
-    cairo_paint(cairo_context);
-  }
-
-  pixbuf->SetSource(cairo_context, x, y);
-  cairo_paint(cairo_context);
-
-  if (animating_hover) {
-    hover_pixbuf->SetSource(cairo_context, x, y);
-    cairo_paint_with_alpha(cairo_context, hover_state);
-  }
-
-  cairo_destroy(cairo_context);
-
-  GtkWidget* child = gtk_bin_get_child(GTK_BIN(widget));
-  if (child)
-    gtk_container_propagate_expose(GTK_CONTAINER(widget), child, e);
-
-  return TRUE;
-}
-
-void CustomDrawButtonBase::SetBackground(SkColor color,
-                                         SkBitmap* image, SkBitmap* mask) {
-  if (!image || !mask) {
-    if (background_image_->valid()) {
-      background_image_->UsePixbuf(NULL);
-    }
-  } else {
-    SkBitmap img =
-        SkBitmapOperations::CreateButtonBackground(color, *image, *mask);
-
-    GdkPixbuf* pixbuf = gfx::GdkPixbufFromSkBitmap(&img);
-    background_image_->UsePixbuf(pixbuf);
-    g_object_unref(pixbuf);
-  }
-}
-
-void CustomDrawButtonBase::Observe(NotificationType type,
-    const NotificationSource& source, const NotificationDetails& details) {
-  DCHECK(theme_provider_);
-  DCHECK(NotificationType::BROWSER_THEME_CHANGED == type);
-
-  surfaces_[GTK_STATE_NORMAL]->UsePixbuf(normal_id_ ?
-      theme_provider_->GetRTLEnabledPixbufNamed(normal_id_) : NULL);
-  surfaces_[GTK_STATE_ACTIVE]->UsePixbuf(pressed_id_ ?
-      theme_provider_->GetRTLEnabledPixbufNamed(pressed_id_) : NULL);
-  surfaces_[GTK_STATE_PRELIGHT]->UsePixbuf(hover_id_ ?
-      theme_provider_->GetRTLEnabledPixbufNamed(hover_id_) : NULL);
-  surfaces_[GTK_STATE_SELECTED]->UsePixbuf(NULL);
-  surfaces_[GTK_STATE_INSENSITIVE]->UsePixbuf(disabled_id_ ?
-      theme_provider_->GetRTLEnabledPixbufNamed(disabled_id_) : NULL);
-}
-
-CairoCachedSurface* CustomDrawButtonBase::PixbufForState(int state) {
-  CairoCachedSurface* pixbuf = surfaces_[state].get();
-
-  // Fall back to the default image if we don't have one for this state.
-  if (!pixbuf || !pixbuf->valid())
-    pixbuf = surfaces_[GTK_STATE_NORMAL].get();
-
-  return pixbuf;
-}
-
-// CustomDrawHoverController ---------------------------------------------------
-
-CustomDrawHoverController::CustomDrawHoverController(GtkWidget* widget)
-    : slide_animation_(this),
-      widget_(NULL) {
-  Init(widget);
-}
-
-CustomDrawHoverController::CustomDrawHoverController()
-    : slide_animation_(this),
-      widget_(NULL) {
-}
-
-CustomDrawHoverController::~CustomDrawHoverController() {
-}
-
-void CustomDrawHoverController::Init(GtkWidget* widget) {
-  DCHECK(widget_ == NULL);
-  widget_ = widget;
-  g_signal_connect(widget_, "enter-notify-event",
-                   G_CALLBACK(OnEnterThunk), this);
-  g_signal_connect(widget_, "leave-notify-event",
-                   G_CALLBACK(OnLeaveThunk), this);
-}
-
-void CustomDrawHoverController::AnimationProgressed(
-    const ui::Animation* animation) {
-  gtk_widget_queue_draw(widget_);
-}
-
-gboolean CustomDrawHoverController::OnEnter(
-    GtkWidget* widget,
-    GdkEventCrossing* event) {
-  slide_animation_.Show();
-  return FALSE;
-}
-
-gboolean CustomDrawHoverController::OnLeave(
-    GtkWidget* widget,
-    GdkEventCrossing* event) {
-  // When the user is holding a mouse button, we don't want to animate.
-  if (event->state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK))
-    slide_animation_.Reset();
-  else
-    slide_animation_.Hide();
-  return FALSE;
-}
-
-// CustomDrawButton ------------------------------------------------------------
-
-CustomDrawButton::CustomDrawButton(int normal_id,
-                                   int pressed_id,
-                                   int hover_id,
-                                   int disabled_id)
-    : button_base_(NULL, normal_id, pressed_id, hover_id, disabled_id),
-      theme_provider_(NULL) {
-  Init();
-
-  // Initialize the theme stuff with no theme_provider.
-  SetBrowserTheme();
-}
-
-CustomDrawButton::CustomDrawButton(GtkThemeProvider* theme_provider,
-                                   int normal_id,
-                                   int pressed_id,
-                                   int hover_id,
-                                   int disabled_id,
-                                   const char* stock_id,
-                                   GtkIconSize stock_size)
-    : button_base_(theme_provider, normal_id, pressed_id, hover_id,
-                   disabled_id),
-      theme_provider_(theme_provider) {
-  native_widget_.Own(gtk_image_new_from_stock(stock_id, stock_size));
-
-  Init();
-
-  theme_provider_->InitThemesFor(this);
-  registrar_.Add(this,
-                 NotificationType::BROWSER_THEME_CHANGED,
-                 NotificationService::AllSources());
-}
-
-CustomDrawButton::CustomDrawButton(GtkThemeProvider* theme_provider,
-                                   int normal_id,
-                                   int pressed_id,
-                                   int hover_id,
-                                   int disabled_id,
-                                   GtkWidget* native_widget)
-    : button_base_(theme_provider, normal_id, pressed_id, hover_id,
-                   disabled_id),
-      native_widget_(native_widget),
-      theme_provider_(theme_provider) {
-  Init();
-
-  theme_provider_->InitThemesFor(this);
-  registrar_.Add(this,
-                 NotificationType::BROWSER_THEME_CHANGED,
-                 NotificationService::AllSources());
-}
-
-CustomDrawButton::~CustomDrawButton() {
-  widget_.Destroy();
-  native_widget_.Destroy();
-}
-
-void CustomDrawButton::Init() {
-  widget_.Own(gtk_chrome_button_new());
-  GTK_WIDGET_UNSET_FLAGS(widget(), GTK_CAN_FOCUS);
-  g_signal_connect(widget(), "expose-event",
-                   G_CALLBACK(OnCustomExposeThunk), this);
-  hover_controller_.Init(widget());
-}
-
-void CustomDrawButton::Observe(NotificationType type,
-    const NotificationSource& source, const NotificationDetails& details) {
-  DCHECK(NotificationType::BROWSER_THEME_CHANGED == type);
-  SetBrowserTheme();
-}
-
-void CustomDrawButton::SetPaintOverride(GtkStateType state) {
-  button_base_.set_paint_override(state);
-  gtk_chrome_button_set_paint_state(GTK_CHROME_BUTTON(widget()), state);
-  gtk_widget_queue_draw(widget());
-}
-
-void CustomDrawButton::UnsetPaintOverride() {
-  button_base_.set_paint_override(-1);
-  gtk_chrome_button_unset_paint_state(GTK_CHROME_BUTTON(widget()));
-  gtk_widget_queue_draw(widget());
-}
-
-void CustomDrawButton::SetBackground(SkColor color,
-                                     SkBitmap* image, SkBitmap* mask) {
-  button_base_.SetBackground(color, image, mask);
-}
-
-gboolean CustomDrawButton::OnCustomExpose(GtkWidget* sender,
-                                          GdkEventExpose* e) {
-  if (UseGtkTheme()) {
-    // Continue processing this expose event.
-    return FALSE;
-  } else {
-    double hover_state = hover_controller_.GetCurrentValue();
-    return button_base_.OnExpose(sender, e, hover_state);
-  }
-}
-
-// static
-CustomDrawButton* CustomDrawButton::CloseButton(
-    GtkThemeProvider* theme_provider) {
-  CustomDrawButton* button = new CustomDrawButton(theme_provider, IDR_CLOSE_BAR,
-      IDR_CLOSE_BAR_P, IDR_CLOSE_BAR_H, 0, GTK_STOCK_CLOSE, GTK_ICON_SIZE_MENU);
-  return button;
-}
-
-void CustomDrawButton::SetBrowserTheme() {
-  if (UseGtkTheme()) {
-    if (native_widget_.get())
-      gtk_button_set_image(GTK_BUTTON(widget()), native_widget_.get());
-    gtk_widget_set_size_request(widget(), -1, -1);
-    gtk_widget_set_app_paintable(widget(), FALSE);
-  } else {
-    if (native_widget_.get())
-      gtk_button_set_image(GTK_BUTTON(widget()), NULL);
-    gtk_widget_set_size_request(widget(), button_base_.Width(),
-                                button_base_.Height());
-
-    gtk_widget_set_app_paintable(widget(), TRUE);
-  }
-
-  gtk_chrome_button_set_use_gtk_rendering(
-      GTK_CHROME_BUTTON(widget()), UseGtkTheme());
-}
-
-bool CustomDrawButton::UseGtkTheme() {
-  return theme_provider_ && theme_provider_->UseGtkTheme();
-}