// Copyright (c) 2009 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/tabs/tab_strip_gtk.h" #include #include "app/gfx/canvas_paint.h" #include "app/l10n_util.h" #include "app/resource_bundle.h" #include "app/slide_animation.h" #include "base/gfx/gtk_util.h" #include "base/gfx/point.h" #include "chrome/browser/browser_theme_provider.h" #include "chrome/browser/gtk/custom_button.h" #include "chrome/browser/gtk/gtk_dnd_util.h" #include "chrome/browser/gtk/gtk_theme_provider.h" #include "chrome/browser/gtk/tabs/dragged_tab_controller_gtk.h" #include "chrome/browser/profile.h" #include "chrome/browser/tab_contents/tab_contents.h" #include "chrome/common/gtk_util.h" #include "chrome/common/notification_service.h" #include "chrome/common/notification_type.h" #include "grit/app_resources.h" #include "grit/theme_resources.h" #if defined(OS_CHROMEOS) #include "chrome/browser/browser.h" #include "chrome/browser/browser_list.h" #include "chrome/browser/gtk/browser_window_gtk.h" #include "chrome/browser/metrics/user_metrics.h" #include "chrome/browser/views/tabs/tab_overview_types.h" #include "chrome/common/x11_util.h" #endif namespace { const int kDefaultAnimationDurationMs = 100; const int kResizeLayoutAnimationDurationMs = 166; const int kReorderAnimationDurationMs = 166; const int kAnimateToBoundsDurationMs = 150; const int kPinnedTabAnimationDurationMs = 166; const int kNewTabButtonHOffset = -5; const int kNewTabButtonVOffset = 5; // The delay between when the mouse leaves the tabstrip and the resize animation // is started. const int kResizeTabsTimeMs = 300; // The range outside of the tabstrip where the pointer must enter/leave to // start/stop the resize animation. const int kTabStripAnimationVSlop = 40; const int kHorizontalMoveThreshold = 16; // pixels // The horizontal offset from one tab to the next, which results in overlapping // tabs. const int kTabHOffset = -16; // A linux specific menu item for toggling window decorations. const int kShowWindowDecorationsCommand = 200; // Size of the drop indicator. static int drop_indicator_width; static int drop_indicator_height; inline int Round(double x) { return static_cast(x + 0.5); } // widget->allocation is not guaranteed to be set. After window creation, // we pick up the normal bounds by connecting to the configure-event signal. gfx::Rect GetInitialWidgetBounds(GtkWidget* widget) { GtkRequisition request; gtk_widget_size_request(widget, &request); return gfx::Rect(0, 0, request.width, request.height); } } // namespace //////////////////////////////////////////////////////////////////////////////// // // TabAnimation // // A base class for all TabStrip animations. // class TabStripGtk::TabAnimation : public AnimationDelegate { public: friend class TabStripGtk; // Possible types of animation. enum Type { INSERT, REMOVE, MOVE, RESIZE, PIN, PIN_MOVE }; TabAnimation(TabStripGtk* tabstrip, Type type) : tabstrip_(tabstrip), animation_(this), start_selected_width_(0), start_unselected_width_(0), end_selected_width_(0), end_unselected_width_(0), layout_on_completion_(false), type_(type) { } virtual ~TabAnimation() {} Type type() const { return type_; } void Start() { animation_.SetSlideDuration(GetDuration()); animation_.SetTweenType(SlideAnimation::EASE_OUT); if (!animation_.IsShowing()) { animation_.Reset(); animation_.Show(); } } void Stop() { animation_.Stop(); } void set_layout_on_completion(bool layout_on_completion) { layout_on_completion_ = layout_on_completion; } // Retrieves the width for the Tab at the specified index if an animation is // active. static double GetCurrentTabWidth(TabStripGtk* tabstrip, TabStripGtk::TabAnimation* animation, int index) { TabGtk* tab = tabstrip->GetTabAt(index); double tab_width; if (tab->is_pinned()) { tab_width = TabGtk::GetPinnedWidth(); } else { double unselected, selected; tabstrip->GetCurrentTabWidths(&unselected, &selected); tab_width = tab->IsSelected() ? selected : unselected; } if (animation) { double specified_tab_width = animation->GetWidthForTab(index); if (specified_tab_width != -1) tab_width = specified_tab_width; } return tab_width; } // Overridden from AnimationDelegate: virtual void AnimationProgressed(const Animation* animation) { tabstrip_->AnimationLayout(end_unselected_width_); } virtual void AnimationEnded(const Animation* animation) { tabstrip_->FinishAnimation(this, layout_on_completion_); // This object is destroyed now, so we can't do anything else after this. } virtual void AnimationCanceled(const Animation* animation) { AnimationEnded(animation); } // Returns the gap before the tab at the specified index. Subclass if during // an animation you need to insert a gap before a tab. virtual double GetGapWidth(int index) { return 0; } protected: // Returns the duration of the animation. virtual int GetDuration() const { return kDefaultAnimationDurationMs; } // Subclasses override to return the width of the Tab at the specified index // at the current animation frame. -1 indicates the default width should be // used for the Tab. virtual double GetWidthForTab(int index) const { return -1; // Use default. } // Figure out the desired start and end widths for the specified pre- and // post- animation tab counts. void GenerateStartAndEndWidths(int start_tab_count, int end_tab_count, int start_pinned_count, int end_pinned_count) { tabstrip_->GetDesiredTabWidths(start_tab_count, start_pinned_count, &start_unselected_width_, &start_selected_width_); double standard_tab_width = static_cast(TabRendererGtk::GetStandardSize().width()); if ((end_tab_count - start_tab_count) > 0 && start_unselected_width_ < standard_tab_width) { double minimum_tab_width = static_cast( TabRendererGtk::GetMinimumUnselectedSize().width()); start_unselected_width_ -= minimum_tab_width / start_tab_count; } tabstrip_->GenerateIdealBounds(); tabstrip_->GetDesiredTabWidths(end_tab_count, end_pinned_count, &end_unselected_width_, &end_selected_width_); } // Returns a value between |start| and |target| based on the current // animation. // TODO(sky): move this to animation. int AnimationPosition(int start, int target) const { return static_cast(AnimationPosition(static_cast(start), static_cast(target))); } // Returns a value between |start| and |target| based on the current // animation. // TODO(sky): move this to animation. double AnimationPosition(double start, double target) const { return start + (target - start) * animation_.GetCurrentValue(); } TabStripGtk* tabstrip_; SlideAnimation animation_; double start_selected_width_; double start_unselected_width_; double end_selected_width_; double end_unselected_width_; private: // True if a complete re-layout is required upon completion of the animation. // Subclasses set this if they don't perform a complete layout // themselves and canceling the animation may leave the strip in an // inconsistent state. bool layout_on_completion_; const Type type_; DISALLOW_COPY_AND_ASSIGN(TabAnimation); }; //////////////////////////////////////////////////////////////////////////////// // Handles insertion of a Tab at |index|. class InsertTabAnimation : public TabStripGtk::TabAnimation { public: explicit InsertTabAnimation(TabStripGtk* tabstrip, int index) : TabAnimation(tabstrip, INSERT), index_(index) { int tab_count = tabstrip->GetTabCount(); int end_pinned_count = tabstrip->GetPinnedTabCount(); int start_pinned_count = end_pinned_count; if (index < end_pinned_count) start_pinned_count--; GenerateStartAndEndWidths(tab_count - 1, tab_count, start_pinned_count, end_pinned_count); } virtual ~InsertTabAnimation() {} protected: // Overridden from TabStripGtk::TabAnimation: virtual double GetWidthForTab(int index) const { if (index == index_) { bool is_selected = tabstrip_->model()->selected_index() == index; double start_width, target_width; if (index < tabstrip_->GetPinnedTabCount()) { start_width = TabGtk::GetMinimumSelectedSize().width(); target_width = TabGtk::GetPinnedWidth(); } else { target_width = is_selected ? end_unselected_width_ : end_selected_width_; start_width = is_selected ? TabGtk::GetMinimumSelectedSize().width() : TabGtk::GetMinimumUnselectedSize().width(); } double delta = target_width - start_width; if (delta > 0) return start_width + (delta * animation_.GetCurrentValue()); return start_width; } if (tabstrip_->GetTabAt(index)->is_pinned()) return TabGtk::GetPinnedWidth(); if (tabstrip_->GetTabAt(index)->IsSelected()) { double delta = end_selected_width_ - start_selected_width_; return start_selected_width_ + (delta * animation_.GetCurrentValue()); } double delta = end_unselected_width_ - start_unselected_width_; return start_unselected_width_ + (delta * animation_.GetCurrentValue()); } private: int index_; DISALLOW_COPY_AND_ASSIGN(InsertTabAnimation); }; //////////////////////////////////////////////////////////////////////////////// // Handles removal of a Tab from |index| class RemoveTabAnimation : public TabStripGtk::TabAnimation { public: RemoveTabAnimation(TabStripGtk* tabstrip, int index, TabContents* contents) : TabAnimation(tabstrip, REMOVE), index_(index) { int tab_count = tabstrip->GetTabCount(); int start_pinned_count = tabstrip->GetPinnedTabCount(); int end_pinned_count = start_pinned_count; if (index < start_pinned_count) end_pinned_count--; GenerateStartAndEndWidths(tab_count, tab_count - 1, start_pinned_count, end_pinned_count); } virtual ~RemoveTabAnimation() {} // Returns the index of the tab being removed. int index() const { return index_; } protected: // Overridden from TabStripGtk::TabAnimation: virtual double GetWidthForTab(int index) const { TabGtk* tab = tabstrip_->GetTabAt(index); if (index == index_) { // The tab(s) being removed are gradually shrunken depending on the state // of the animation. if (tab->is_pinned()) return AnimationPosition(TabGtk::GetPinnedWidth(), -kTabHOffset); // Removed animated Tabs are never selected. double start_width = start_unselected_width_; // Make sure target_width is at least abs(kTabHOffset), otherwise if // less than kTabHOffset during layout tabs get negatively offset. double target_width = std::max(abs(kTabHOffset), TabGtk::GetMinimumUnselectedSize().width() + kTabHOffset); return AnimationPosition(start_width, target_width); } if (tab->is_pinned()) return TabGtk::GetPinnedWidth(); if (tabstrip_->available_width_for_tabs_ != -1 && index_ != tabstrip_->GetTabCount() - 1) { return TabStripGtk::TabAnimation::GetWidthForTab(index); } // All other tabs are sized according to the start/end widths specified at // the start of the animation. if (tab->IsSelected()) { double delta = end_selected_width_ - start_selected_width_; return start_selected_width_ + (delta * animation_.GetCurrentValue()); } double delta = end_unselected_width_ - start_unselected_width_; return start_unselected_width_ + (delta * animation_.GetCurrentValue()); } virtual void AnimationEnded(const Animation* animation) { tabstrip_->RemoveTabAt(index_); TabStripGtk::TabAnimation::AnimationEnded(animation); } private: int index_; DISALLOW_COPY_AND_ASSIGN(RemoveTabAnimation); }; //////////////////////////////////////////////////////////////////////////////// // Handles the movement of a Tab from one position to another. class MoveTabAnimation : public TabStripGtk::TabAnimation { public: MoveTabAnimation(TabStripGtk* tabstrip, int tab_a_index, int tab_b_index) : TabAnimation(tabstrip, MOVE), start_tab_a_bounds_(tabstrip_->GetIdealBounds(tab_b_index)), start_tab_b_bounds_(tabstrip_->GetIdealBounds(tab_a_index)) { tab_a_ = tabstrip_->GetTabAt(tab_a_index); tab_b_ = tabstrip_->GetTabAt(tab_b_index); // Since we don't do a full TabStrip re-layout, we need to force a full // layout upon completion since we're not guaranteed to be in a good state // if for example the animation is canceled. set_layout_on_completion(true); } virtual ~MoveTabAnimation() {} // Overridden from AnimationDelegate: virtual void AnimationProgressed(const Animation* animation) { // Position Tab A double distance = start_tab_b_bounds_.x() - start_tab_a_bounds_.x(); double delta = distance * animation_.GetCurrentValue(); double new_x = start_tab_a_bounds_.x() + delta; gfx::Rect bounds(Round(new_x), tab_a_->y(), tab_a_->width(), tab_a_->height()); tabstrip_->SetTabBounds(tab_a_, bounds); // Position Tab B distance = start_tab_a_bounds_.x() - start_tab_b_bounds_.x(); delta = distance * animation_.GetCurrentValue(); new_x = start_tab_b_bounds_.x() + delta; bounds = gfx::Rect(Round(new_x), tab_b_->y(), tab_b_->width(), tab_b_->height()); tabstrip_->SetTabBounds(tab_b_, bounds); } protected: // Overridden from TabStripGtk::TabAnimation: virtual int GetDuration() const { return kReorderAnimationDurationMs; } private: // The two tabs being exchanged. TabGtk* tab_a_; TabGtk* tab_b_; // ...and their bounds. gfx::Rect start_tab_a_bounds_; gfx::Rect start_tab_b_bounds_; DISALLOW_COPY_AND_ASSIGN(MoveTabAnimation); }; //////////////////////////////////////////////////////////////////////////////// // Handles the animated resize layout of the entire TabStrip from one width // to another. class ResizeLayoutAnimation : public TabStripGtk::TabAnimation { public: explicit ResizeLayoutAnimation(TabStripGtk* tabstrip) : TabAnimation(tabstrip, RESIZE) { int tab_count = tabstrip->GetTabCount(); int pinned_tab_count = tabstrip->GetPinnedTabCount(); GenerateStartAndEndWidths(tab_count, tab_count, pinned_tab_count, pinned_tab_count); InitStartState(); } virtual ~ResizeLayoutAnimation() {} // Overridden from AnimationDelegate: virtual void AnimationEnded(const Animation* animation) { tabstrip_->resize_layout_scheduled_ = false; TabStripGtk::TabAnimation::AnimationEnded(animation); } protected: // Overridden from TabStripGtk::TabAnimation: virtual int GetDuration() const { return kResizeLayoutAnimationDurationMs; } virtual double GetWidthForTab(int index) const { TabGtk* tab = tabstrip_->GetTabAt(index); if (tab->is_pinned()) return TabGtk::GetPinnedWidth(); if (tab->IsSelected()) return AnimationPosition(start_selected_width_, end_selected_width_); return AnimationPosition(start_unselected_width_, end_unselected_width_); } private: // We need to start from the current widths of the Tabs as they were last // laid out, _not_ the last known good state, which is what'll be done if we // don't measure the Tab sizes here and just go with the default TabAnimation // behavior... void InitStartState() { for (int i = 0; i < tabstrip_->GetTabCount(); ++i) { TabGtk* current_tab = tabstrip_->GetTabAt(i); if (!current_tab->is_pinned()) { if (current_tab->IsSelected()) { start_selected_width_ = current_tab->width(); } else { start_unselected_width_ = current_tab->width(); } } } } DISALLOW_COPY_AND_ASSIGN(ResizeLayoutAnimation); }; //////////////////////////////////////////////////////////////////////////////// // Handles a tabs pinned state changing while the tab does not change position // in the model. class PinnedTabAnimation : public TabStripGtk::TabAnimation { public: explicit PinnedTabAnimation(TabStripGtk* tabstrip, int index) : TabAnimation(tabstrip, PIN), index_(index) { int tab_count = tabstrip->GetTabCount(); int start_pinned_count = tabstrip->GetPinnedTabCount(); int end_pinned_count = start_pinned_count; if (tabstrip->GetTabAt(index)->is_pinned()) start_pinned_count--; else start_pinned_count++; GenerateStartAndEndWidths(tab_count, tab_count, start_pinned_count, end_pinned_count); } protected: // Overridden from TabStripGtk::TabAnimation: virtual int GetDuration() const { return kPinnedTabAnimationDurationMs; } virtual double GetWidthForTab(int index) const { TabGtk* tab = tabstrip_->GetTabAt(index); if (index == index_) { if (tab->is_pinned()) { return AnimationPosition( start_selected_width_, static_cast(TabGtk::GetPinnedWidth())); } else { return AnimationPosition(static_cast(TabGtk::GetPinnedWidth()), end_selected_width_); } } else if (tab->is_pinned()) { return TabGtk::GetPinnedWidth(); } if (tab->IsSelected()) return AnimationPosition(start_selected_width_, end_selected_width_); return AnimationPosition(start_unselected_width_, end_unselected_width_); } private: // Index of the tab whose pinned state changed. int index_; DISALLOW_COPY_AND_ASSIGN(PinnedTabAnimation); }; //////////////////////////////////////////////////////////////////////////////// // Handles the animation when a tabs pinned state changes and the tab moves as a // result. class PinAndMoveAnimation : public TabStripGtk::TabAnimation { public: explicit PinAndMoveAnimation(TabStripGtk* tabstrip, int from_index, int to_index, const gfx::Rect& start_bounds) : TabAnimation(tabstrip, PIN_MOVE), tab_(tabstrip->GetTabAt(to_index)), start_bounds_(start_bounds), from_index_(from_index), to_index_(to_index) { int tab_count = tabstrip->GetTabCount(); int start_pinned_count = tabstrip->GetPinnedTabCount(); int end_pinned_count = start_pinned_count; if (tabstrip->GetTabAt(to_index)->is_pinned()) start_pinned_count--; else start_pinned_count++; GenerateStartAndEndWidths(tab_count, tab_count, start_pinned_count, end_pinned_count); target_bounds_ = tabstrip->GetIdealBounds(to_index); } // Overridden from AnimationDelegate: virtual void AnimationProgressed(const Animation* animation) { // Do the normal layout. TabAnimation::AnimationProgressed(animation); // Then special case the position of the tab being moved. int x = AnimationPosition(start_bounds_.x(), target_bounds_.x()); int width = AnimationPosition(start_bounds_.width(), target_bounds_.width()); gfx::Rect tab_bounds(x, start_bounds_.y(), width, start_bounds_.height()); tabstrip_->SetTabBounds(tab_, tab_bounds); } virtual void AnimationEnded(const Animation* animation) { tabstrip_->resize_layout_scheduled_ = false; TabStripGtk::TabAnimation::AnimationEnded(animation); } virtual double GetGapWidth(int index) { if (to_index_ < from_index_) { // The tab was pinned. if (index == to_index_) { double current_size = AnimationPosition(0, target_bounds_.width()); if (current_size < -kTabHOffset) return -(current_size + kTabHOffset); } else if (index == from_index_ + 1) { return AnimationPosition(start_bounds_.width(), 0); } } else { // The tab was unpinned. if (index == from_index_) { return AnimationPosition(TabGtk::GetPinnedWidth() + kTabHOffset, 0); } } return 0; } protected: // Overridden from TabStripGtk::TabAnimation: virtual int GetDuration() const { return kReorderAnimationDurationMs; } virtual double GetWidthForTab(int index) const { TabGtk* tab = tabstrip_->GetTabAt(index); if (index == to_index_) return AnimationPosition(0, target_bounds_.width()); if (tab->is_pinned()) return TabGtk::GetPinnedWidth(); if (tab->IsSelected()) return AnimationPosition(start_selected_width_, end_selected_width_); return AnimationPosition(start_unselected_width_, end_unselected_width_); } private: // The tab being moved. TabGtk* tab_; // Initial bounds of tab_. gfx::Rect start_bounds_; // Target bounds. gfx::Rect target_bounds_; // Start and end indices of the tab. int from_index_; int to_index_; DISALLOW_COPY_AND_ASSIGN(PinAndMoveAnimation); }; //////////////////////////////////////////////////////////////////////////////// // TabStripGtk, public: // static const int TabStripGtk::pinned_to_non_pinned_gap_ = 3; TabStripGtk::TabStripGtk(TabStripModel* model) : current_unselected_width_(TabGtk::GetStandardSize().width()), current_selected_width_(TabGtk::GetStandardSize().width()), available_width_for_tabs_(-1), resize_layout_scheduled_(false), model_(model), theme_provider_(GtkThemeProvider::GetFrom(model->profile())), resize_layout_factory_(this), added_as_message_loop_observer_(false) { theme_provider_->InitThemesFor(this); registrar_.Add(this, NotificationType::BROWSER_THEME_CHANGED, NotificationService::AllSources()); } TabStripGtk::~TabStripGtk() { model_->RemoveObserver(this); tabstrip_.Destroy(); // Free any remaining tabs. This is needed to free the very last tab, // because it is not animated on close. This also happens when all of the // tabs are closed at once. std::vector::iterator iterator = tab_data_.begin(); for (; iterator < tab_data_.end(); iterator++) { delete iterator->tab; } tab_data_.clear(); // Make sure we unhook ourselves as a message loop observer so that we don't // crash in the case where the user closes the last tab in a window. RemoveMessageLoopObserver(); } void TabStripGtk::Init() { model_->AddObserver(this); tabstrip_.Own(gtk_fixed_new()); gtk_widget_set_size_request(tabstrip_.get(), -1, TabGtk::GetMinimumUnselectedSize().height()); gtk_widget_set_app_paintable(tabstrip_.get(), TRUE); gtk_drag_dest_set(tabstrip_.get(), GTK_DEST_DEFAULT_ALL, NULL, 0, static_cast( GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK)); GtkDndUtil::SetDestTargetListFromCodeMask(tabstrip_.get(), GtkDndUtil::TEXT_URI_LIST | GtkDndUtil::TEXT_PLAIN); g_signal_connect(G_OBJECT(tabstrip_.get()), "expose-event", G_CALLBACK(OnExpose), this); g_signal_connect(G_OBJECT(tabstrip_.get()), "size-allocate", G_CALLBACK(OnSizeAllocate), this); g_signal_connect(G_OBJECT(tabstrip_.get()), "drag-motion", G_CALLBACK(OnDragMotion), this); g_signal_connect(G_OBJECT(tabstrip_.get()), "drag-drop", G_CALLBACK(OnDragDrop), this); g_signal_connect(G_OBJECT(tabstrip_.get()), "drag-leave", G_CALLBACK(OnDragLeave), this); g_signal_connect(G_OBJECT(tabstrip_.get()), "drag-data-received", G_CALLBACK(OnDragDataReceived), this); newtab_button_.reset(MakeNewTabButton()); #if defined(OS_CHROMEOS) tab_overview_button_.reset(MakeTabOverviewButton()); #endif gtk_widget_show_all(tabstrip_.get()); bounds_ = GetInitialWidgetBounds(tabstrip_.get()); if (drop_indicator_width == 0) { // Direction doesn't matter, both images are the same size. GdkPixbuf* drop_image = GetDropArrowImage(true); drop_indicator_width = gdk_pixbuf_get_width(drop_image); drop_indicator_height = gdk_pixbuf_get_height(drop_image); } } void TabStripGtk::Show() { gtk_widget_show(tabstrip_.get()); } void TabStripGtk::Hide() { gtk_widget_hide(tabstrip_.get()); } void TabStripGtk::Layout() { // Called from: // - window resize // - animation completion if (active_animation_.get()) active_animation_->Stop(); GenerateIdealBounds(); int tab_count = GetTabCount(); int tab_right = 0; for (int i = 0; i < tab_count; ++i) { const gfx::Rect& bounds = tab_data_.at(i).ideal_bounds; TabGtk* tab = GetTabAt(i); SetTabBounds(tab, bounds); tab_right = bounds.right(); tab_right += GetTabHOffset(i + 1); } LayoutNewTabButton(static_cast(tab_right), current_unselected_width_); #if defined(OS_CHROMEOS) LayoutTabOverviewButton(); #endif gtk_widget_queue_draw(tabstrip_.get()); } void TabStripGtk::SchedulePaint() { gtk_widget_queue_draw(tabstrip_.get()); } void TabStripGtk::SetBounds(const gfx::Rect& bounds) { bounds_ = bounds; } void TabStripGtk::UpdateLoadingAnimations() { for (int i = 0, index = 0; i < GetTabCount(); ++i, ++index) { TabGtk* current_tab = GetTabAt(i); if (current_tab->closing()) { --index; } else { TabContents* contents = model_->GetTabContentsAt(index); if (!contents || !contents->is_loading()) { current_tab->ValidateLoadingAnimation(TabGtk::ANIMATION_NONE); } else if (contents->waiting_for_response()) { current_tab->ValidateLoadingAnimation(TabGtk::ANIMATION_WAITING); } else { current_tab->ValidateLoadingAnimation(TabGtk::ANIMATION_LOADING); } } } gtk_widget_queue_draw(tabstrip_.get()); } bool TabStripGtk::IsCompatibleWith(TabStripGtk* other) { return model_->profile() == other->model()->profile(); } bool TabStripGtk::IsAnimating() const { return active_animation_.get() != NULL; } void TabStripGtk::DestroyDragController() { if (IsDragSessionActive()) drag_controller_.reset(NULL); } void TabStripGtk::DestroyDraggedSourceTab(TabGtk* tab) { // We could be running an animation that references this Tab. if (active_animation_.get()) active_animation_->Stop(); // Make sure we leave the tab_data_ vector in a consistent state, otherwise // we'll be pointing to tabs that have been deleted and removed from the // child view list. std::vector::iterator it = tab_data_.begin(); for (; it != tab_data_.end(); ++it) { if (it->tab == tab) { if (!model_->closing_all()) NOTREACHED() << "Leaving in an inconsistent state!"; tab_data_.erase(it); break; } } gtk_container_remove(GTK_CONTAINER(tabstrip_.get()), tab->widget()); delete tab; // Force a layout here, because if we've just quickly drag detached a Tab, // the stopping of the active animation above may have left the TabStrip in a // bad (visual) state. Layout(); } gfx::Rect TabStripGtk::GetIdealBounds(int index) { DCHECK(index >= 0 && index < GetTabCount()); return tab_data_.at(index).ideal_bounds; } gfx::Point TabStripGtk::GetTabStripOriginForWidget(GtkWidget* target) { int x, y; if (!gtk_widget_translate_coordinates(widget(), target, -widget()->allocation.x, 0, &x, &y)) { // If the tab strip isn't showing, give the coordinates relative to the // toplevel instead. gtk_widget_translate_coordinates( gtk_widget_get_toplevel(widget()), target, 0, 0, &x, &y); } if (GTK_WIDGET_NO_WINDOW(target)) { x += target->allocation.x; y += target->allocation.y; } return gfx::Point(x, y); } //////////////////////////////////////////////////////////////////////////////// // TabStripGtk, TabStripModelObserver implementation: void TabStripGtk::TabInsertedAt(TabContents* contents, int index, bool foreground) { DCHECK(contents); DCHECK(index == TabStripModel::kNoTab || model_->ContainsIndex(index)); if (active_animation_.get()) active_animation_->Stop(); bool contains_tab = false; TabGtk* tab = NULL; // First see if this Tab is one that was dragged out of this TabStrip and is // now being dragged back in. In this case, the DraggedTabController actually // has the Tab already constructed and we can just insert it into our list // again. if (IsDragSessionActive()) { tab = drag_controller_->GetDragSourceTabForContents(contents); if (tab) { // If the Tab was detached, it would have been animated closed but not // removed, so we need to reset this property. tab->set_closing(false); tab->ValidateLoadingAnimation(TabRendererGtk::ANIMATION_NONE); tab->SetVisible(true); } // See if we're already in the list. We don't want to add ourselves twice. std::vector::const_iterator iter = tab_data_.begin(); for (; iter != tab_data_.end() && !contains_tab; ++iter) { if (iter->tab == tab) contains_tab = true; } } if (!tab) tab = new TabGtk(this); // Only insert if we're not already in the list. if (!contains_tab) { TabData d = { tab, gfx::Rect() }; tab_data_.insert(tab_data_.begin() + index, d); tab->UpdateData(contents, false); } tab->set_pinned(model_->IsTabPinned(index)); if (gtk_widget_get_parent(tab->widget()) != tabstrip_.get()) gtk_fixed_put(GTK_FIXED(tabstrip_.get()), tab->widget(), 0, 0); // Don't animate the first tab; it looks weird. if (GetTabCount() > 1) { StartInsertTabAnimation(index); // We added the tab at 0x0, we need to force an animation step otherwise // if GTK paints before the animation event the tab is painted at 0x0 // which is most likely not where it should be positioned. active_animation_->AnimationProgressed(NULL); } else { Layout(); } } void TabStripGtk::TabDetachedAt(TabContents* contents, int index) { if (CanUpdateDisplay()) { GenerateIdealBounds(); StartRemoveTabAnimation(index, contents); // Have to do this _after_ calling StartRemoveTabAnimation, so that any // previous remove is completed fully and index is valid in sync with the // model index. GetTabAt(index)->set_closing(true); } } void TabStripGtk::TabSelectedAt(TabContents* old_contents, TabContents* new_contents, int index, bool user_gesture) { DCHECK(index >= 0 && index < static_cast(GetTabCount())); if (CanUpdateDisplay()) { // We have "tiny tabs" if the tabs are so tiny that the unselected ones are // a different size to the selected ones. bool tiny_tabs = current_unselected_width_ != current_selected_width_; if (!IsAnimating() && (!resize_layout_scheduled_ || tiny_tabs)) { Layout(); } else { gtk_widget_queue_draw(tabstrip_.get()); } } } void TabStripGtk::TabMoved(TabContents* contents, int from_index, int to_index, bool pinned_state_changed) { gfx::Rect start_bounds = GetIdealBounds(from_index); TabGtk* tab = GetTabAt(from_index); tab_data_.erase(tab_data_.begin() + from_index); TabData data = {tab, gfx::Rect()}; tab->set_pinned(model_->IsTabPinned(to_index)); tab_data_.insert(tab_data_.begin() + to_index, data); if (pinned_state_changed) { StartPinAndMoveTabAnimation(from_index, to_index, start_bounds); } else { GenerateIdealBounds(); StartMoveTabAnimation(from_index, to_index); } } void TabStripGtk::TabChangedAt(TabContents* contents, int index, bool loading_only) { // Index is in terms of the model. Need to make sure we adjust that index in // case we have an animation going. TabGtk* tab = GetTabAt(index); tab->UpdateData(contents, loading_only); tab->UpdateFromModel(); gtk_widget_queue_draw(tabstrip_.get()); } void TabStripGtk::TabPinnedStateChanged(TabContents* contents, int index) { GetTabAt(index)->set_pinned(model_->IsTabPinned(index)); StartPinnedTabAnimation(index); } //////////////////////////////////////////////////////////////////////////////// // TabStripGtk, TabGtk::TabDelegate implementation: bool TabStripGtk::IsTabSelected(const TabGtk* tab) const { if (tab->closing()) return false; return GetIndexOfTab(tab) == model_->selected_index(); } void TabStripGtk::GetCurrentTabWidths(double* unselected_width, double* selected_width) const { *unselected_width = current_unselected_width_; *selected_width = current_selected_width_; } void TabStripGtk::SelectTab(TabGtk* tab) { int index = GetIndexOfTab(tab); if (model_->ContainsIndex(index)) model_->SelectTabContentsAt(index, true); } void TabStripGtk::CloseTab(TabGtk* tab) { int tab_index = GetIndexOfTab(tab); if (model_->ContainsIndex(tab_index)) { TabGtk* last_tab = GetTabAt(GetTabCount() - 1); // Limit the width available to the TabStrip for laying out Tabs, so that // Tabs are not resized until a later time (when the mouse pointer leaves // the TabStrip). available_width_for_tabs_ = GetAvailableWidthForTabs(last_tab); resize_layout_scheduled_ = true; // We hook into the message loop in order to receive mouse move events when // the mouse is outside of the tabstrip. We unhook once the resize layout // animation is started. AddMessageLoopObserver(); model_->CloseTabContentsAt(tab_index); } } bool TabStripGtk::IsCommandEnabledForTab( TabStripModel::ContextMenuCommand command_id, const TabGtk* tab) const { int index = GetIndexOfTab(tab); if (model_->ContainsIndex(index)) return model_->IsContextMenuCommandEnabled(index, command_id); return false; } void TabStripGtk::ExecuteCommandForTab( TabStripModel::ContextMenuCommand command_id, TabGtk* tab) { int index = GetIndexOfTab(tab); if (model_->ContainsIndex(index)) model_->ExecuteContextMenuCommand(index, command_id); } void TabStripGtk::StartHighlightTabsForCommand( TabStripModel::ContextMenuCommand command_id, TabGtk* tab) { if (command_id == TabStripModel::CommandCloseTabsOpenedBy) { int index = GetIndexOfTab(tab); if (model_->ContainsIndex(index)) { std::vector indices = model_->GetIndexesOpenedBy(index); std::vector::const_iterator iter = indices.begin(); for (; iter != indices.end(); ++iter) { int current_index = *iter; DCHECK(current_index >= 0 && current_index < GetTabCount()); } } } } void TabStripGtk::StopHighlightTabsForCommand( TabStripModel::ContextMenuCommand command_id, TabGtk* tab) { if (command_id == TabStripModel::CommandCloseTabsOpenedBy || command_id == TabStripModel::CommandCloseTabsToRight || command_id == TabStripModel::CommandCloseOtherTabs) { // Just tell all Tabs to stop pulsing - it's safe. StopAllHighlighting(); } } void TabStripGtk::StopAllHighlighting() { // TODO(jhawkins): Hook up animations. } void TabStripGtk::MaybeStartDrag(TabGtk* tab, const gfx::Point& point) { // Don't accidentally start any drag operations during animations if the // mouse is down. if (IsAnimating() || tab->closing() || !HasAvailableDragActions()) return; drag_controller_.reset(new DraggedTabControllerGtk(tab, this)); drag_controller_->CaptureDragInfo(point); } void TabStripGtk::ContinueDrag(GdkDragContext* context) { // We can get called even if |MaybeStartDrag| wasn't called in the event of // a TabStrip animation when the mouse button is down. In this case we should // _not_ continue the drag because it can lead to weird bugs. if (drag_controller_.get()) drag_controller_->Drag(); } bool TabStripGtk::EndDrag(bool canceled) { return drag_controller_.get() ? drag_controller_->EndDrag(canceled) : false; } bool TabStripGtk::HasAvailableDragActions() const { return model_->delegate()->GetDragActions() != 0; } ThemeProvider* TabStripGtk::GetThemeProvider() { return theme_provider_; } /////////////////////////////////////////////////////////////////////////////// // TabStripGtk, MessageLoop::Observer implementation: void TabStripGtk::WillProcessEvent(GdkEvent* event) { // Nothing to do. } void TabStripGtk::DidProcessEvent(GdkEvent* event) { switch (event->type) { case GDK_MOTION_NOTIFY: case GDK_LEAVE_NOTIFY: HandleGlobalMouseMoveEvent(); break; default: break; } } void TabStripGtk::Observe(NotificationType type, const NotificationSource& source, const NotificationDetails& details) { if (type == NotificationType::BROWSER_THEME_CHANGED) { TabRendererGtk::SetSelectedTitleColor(theme_provider_->GetColor( BrowserThemeProvider::COLOR_TAB_TEXT)); TabRendererGtk::SetUnselectedTitleColor(theme_provider_->GetColor( BrowserThemeProvider::COLOR_BACKGROUND_TAB_TEXT)); } } //////////////////////////////////////////////////////////////////////////////// // TabStripGtk, private: int TabStripGtk::GetTabCount() const { return static_cast(tab_data_.size()); } int TabStripGtk::GetPinnedTabCount() const { int pinned_count = 0; for (size_t i = 0; i < tab_data_.size(); ++i) { if (tab_data_[i].tab->is_pinned()) pinned_count++; else return pinned_count; } return pinned_count; } int TabStripGtk::GetAvailableWidthForTabs(TabGtk* last_tab) const { return last_tab->x() + last_tab->width(); } int TabStripGtk::GetIndexOfTab(const TabGtk* tab) const { for (int i = 0, index = 0; i < GetTabCount(); ++i, ++index) { TabGtk* current_tab = GetTabAt(i); if (current_tab->closing()) { --index; } else if (current_tab == tab) { return index; } } return -1; } TabGtk* TabStripGtk::GetTabAt(int index) const { DCHECK_GE(index, 0); DCHECK_LT(index, GetTabCount()); return tab_data_.at(index).tab; } void TabStripGtk::RemoveTabAt(int index) { TabGtk* removed = tab_data_.at(index).tab; // Remove the Tab from the TabStrip's list. tab_data_.erase(tab_data_.begin() + index); if (!IsDragSessionActive() || !drag_controller_->IsDragSourceTab(removed)) { gtk_container_remove(GTK_CONTAINER(tabstrip_.get()), removed->widget()); delete removed; } } void TabStripGtk::HandleGlobalMouseMoveEvent() { if (!IsCursorInTabStripZone()) { // Mouse moved outside the tab slop zone, start a timer to do a resize // layout after a short while... if (resize_layout_factory_.empty()) { MessageLoop::current()->PostDelayedTask(FROM_HERE, resize_layout_factory_.NewRunnableMethod( &TabStripGtk::ResizeLayoutTabs), kResizeTabsTimeMs); } } else { // Mouse moved quickly out of the tab strip and then into it again, so // cancel the timer so that the strip doesn't move when the mouse moves // back over it. resize_layout_factory_.RevokeAll(); } } void TabStripGtk::GenerateIdealBounds() { int tab_count = GetTabCount(); double unselected, selected; GetDesiredTabWidths(tab_count, GetPinnedTabCount(), &unselected, &selected); current_unselected_width_ = unselected; current_selected_width_ = selected; // NOTE: This currently assumes a tab's height doesn't differ based on // selected state or the number of tabs in the strip! int tab_height = TabGtk::GetStandardSize().height(); double tab_x = tab_start_x(); for (int i = 0; i < tab_count; ++i) { TabGtk* tab = GetTabAt(i); double tab_width = unselected; if (tab->is_pinned()) tab_width = TabGtk::GetPinnedWidth(); else if (tab->IsSelected()) tab_width = selected; double end_of_tab = tab_x + tab_width; int rounded_tab_x = Round(tab_x); gfx::Rect state(rounded_tab_x, 0, Round(end_of_tab) - rounded_tab_x, tab_height); tab_data_.at(i).ideal_bounds = state; tab_x = end_of_tab + GetTabHOffset(i + 1); } } void TabStripGtk::LayoutNewTabButton(double last_tab_right, double unselected_width) { gfx::Rect bounds(0, kNewTabButtonVOffset, newtab_button_->width(), newtab_button_->height()); int delta = abs(Round(unselected_width) - TabGtk::GetStandardSize().width()); if (delta > 1 && !resize_layout_scheduled_) { // We're shrinking tabs, so we need to anchor the New Tab button to the // right edge of the TabStrip's bounds, rather than the right edge of the // right-most Tab, otherwise it'll bounce when animating. #if defined(OS_CHROMEOS) bounds.set_x(bounds_.width() - newtab_button_->width() - tab_overview_button_->width()); #else bounds.set_x(bounds_.width() - newtab_button_->width()); #endif } else { bounds.set_x(Round(last_tab_right - kTabHOffset) + kNewTabButtonHOffset); } bounds.set_x(gtk_util::MirroredLeftPointForRect(tabstrip_.get(), bounds)); gtk_fixed_move(GTK_FIXED(tabstrip_.get()), newtab_button_->widget(), bounds.x(), bounds.y()); } #if defined OS_CHROMEOS void TabStripGtk::LayoutTabOverviewButton() { gtk_fixed_move(GTK_FIXED(tabstrip_.get()), tab_overview_button_->widget(), bounds_.width() - tab_overview_button_->width(), 0); } #endif void TabStripGtk::GetDesiredTabWidths(int tab_count, int pinned_tab_count, double* unselected_width, double* selected_width) const { DCHECK(tab_count >= 0 && pinned_tab_count >= 0 && pinned_tab_count <= tab_count); const double min_unselected_width = TabGtk::GetMinimumUnselectedSize().width(); const double min_selected_width = TabGtk::GetMinimumSelectedSize().width(); *unselected_width = min_unselected_width; *selected_width = min_selected_width; if (tab_count == 0) { // Return immediately to avoid divide-by-zero below. return; } // Determine how much space we can actually allocate to tabs. int available_width = tabstrip_->allocation.width; if (available_width_for_tabs_ < 0) { available_width = bounds_.width(); available_width -= (kNewTabButtonHOffset + newtab_button_->width()); #if defined(OS_CHROMEOS) available_width -= tab_overview_button_->width(); #endif } else { // Interesting corner case: if |available_width_for_tabs_| > the result // of the calculation in the conditional arm above, the strip is in // overflow. We can either use the specified width or the true available // width here; the first preserves the consistent "leave the last tab under // the user's mouse so they can close many tabs" behavior at the cost of // prolonging the glitchy appearance of the overflow state, while the second // gets us out of overflow as soon as possible but forces the user to move // their mouse for a few tabs' worth of closing. We choose visual // imperfection over behavioral imperfection and select the first option. available_width = available_width_for_tabs_; } if (pinned_tab_count > 0) { available_width -= (pinned_tab_count * TabGtk::GetPinnedWidth() - std::max(0, pinned_tab_count - 1) * kTabHOffset); tab_count -= pinned_tab_count; if (tab_count == 0) { *selected_width = *unselected_width = TabGtk::GetStandardSize().width(); return; } // For spacing between last pinned tab and normal tab. available_width -= kTabHOffset; } // Calculate the desired tab widths by dividing the available space into equal // portions. Don't let tabs get larger than the "standard width" or smaller // than the minimum width for each type, respectively. const int total_offset = kTabHOffset * (tab_count - 1); const double desired_tab_width = std::min( (static_cast(available_width - total_offset) / static_cast(tab_count)), static_cast(TabGtk::GetStandardSize().width())); *unselected_width = std::max(desired_tab_width, min_unselected_width); *selected_width = std::max(desired_tab_width, min_selected_width); // When there are multiple tabs, we'll have one selected and some unselected // tabs. If the desired width was between the minimum sizes of these types, // try to shrink the tabs with the smaller minimum. For example, if we have // a strip of width 10 with 4 tabs, the desired width per tab will be 2.5. If // selected tabs have a minimum width of 4 and unselected tabs have a minimum // width of 1, the above code would set *unselected_width = 2.5, // *selected_width = 4, which results in a total width of 11.5. Instead, we // want to set *unselected_width = 2, *selected_width = 4, for a total width // of 10. if (tab_count > 1) { if ((min_unselected_width < min_selected_width) && (desired_tab_width < min_selected_width)) { double calc_width = static_cast( available_width - total_offset - min_selected_width) / static_cast(tab_count - 1); *unselected_width = std::max(calc_width, min_unselected_width); } else if ((min_unselected_width > min_selected_width) && (desired_tab_width < min_unselected_width)) { *selected_width = std::max(available_width - total_offset - (min_unselected_width * (tab_count - 1)), min_selected_width); } } } int TabStripGtk::GetTabHOffset(int tab_index) { if (tab_index < GetTabCount() && GetTabAt(tab_index - 1)->is_pinned() && !GetTabAt(tab_index)->is_pinned()) { return pinned_to_non_pinned_gap_ + kTabHOffset; } return kTabHOffset; } int TabStripGtk::tab_start_x() const { return 0; } void TabStripGtk::ResizeLayoutTabs() { resize_layout_factory_.RevokeAll(); // It is critically important that this is unhooked here, otherwise we will // keep spying on messages forever. RemoveMessageLoopObserver(); available_width_for_tabs_ = -1; int pinned_tab_count = GetPinnedTabCount(); if (pinned_tab_count == GetTabCount()) { // Only pinned tabs, we know the tab widths won't have changed (all pinned // tabs have the same width), so there is nothing to do. return; } TabGtk* first_tab = GetTabAt(pinned_tab_count); double unselected, selected; GetDesiredTabWidths(GetTabCount(), pinned_tab_count, &unselected, &selected); int w = Round(first_tab->IsSelected() ? selected : unselected); // We only want to run the animation if we're not already at the desired // size. if (abs(first_tab->width() - w) > 1) StartResizeLayoutAnimation(); } bool TabStripGtk::IsCursorInTabStripZone() const { gfx::Point tabstrip_topleft; gtk_util::ConvertWidgetPointToScreen(tabstrip_.get(), &tabstrip_topleft); gfx::Rect bds = bounds(); bds.set_origin(tabstrip_topleft); bds.set_height(bds.height() + kTabStripAnimationVSlop); GdkScreen* screen = gdk_screen_get_default(); GdkDisplay* display = gdk_screen_get_display(screen); gint x, y; gdk_display_get_pointer(display, NULL, &x, &y, NULL); gfx::Point cursor_point(x, y); return bds.Contains(cursor_point); } void TabStripGtk::AddMessageLoopObserver() { if (!added_as_message_loop_observer_) { MessageLoopForUI::current()->AddObserver(this); added_as_message_loop_observer_ = true; } } void TabStripGtk::RemoveMessageLoopObserver() { if (added_as_message_loop_observer_) { MessageLoopForUI::current()->RemoveObserver(this); added_as_message_loop_observer_ = false; } } gfx::Rect TabStripGtk::GetDropBounds(int drop_index, bool drop_before, bool* is_beneath) { DCHECK_NE(drop_index, -1); int center_x; if (drop_index < GetTabCount()) { TabGtk* tab = GetTabAt(drop_index); // TODO(sky): update these for pinned tabs. if (drop_before) center_x = tab->x() - (kTabHOffset / 2); else center_x = tab->x() + (tab->width() / 2); } else { TabGtk* last_tab = GetTabAt(drop_index - 1); center_x = last_tab->x() + last_tab->width() + (kTabHOffset / 2); } center_x = gtk_util::MirroredXCoordinate(tabstrip_.get(), center_x); // Determine the screen bounds. gfx::Point drop_loc(center_x - drop_indicator_width / 2, -drop_indicator_height); gtk_util::ConvertWidgetPointToScreen(tabstrip_.get(), &drop_loc); gfx::Rect drop_bounds(drop_loc.x(), drop_loc.y(), drop_indicator_width, drop_indicator_height); // TODO(jhawkins): We always display the arrow underneath the tab because we // don't have custom frame support yet. *is_beneath = true; if (*is_beneath) drop_bounds.Offset(0, drop_bounds.height() + bounds().height()); return drop_bounds; } void TabStripGtk::UpdateDropIndex(GdkDragContext* context, gint x, gint y) { // TODO(jhawkins): Handle RTL layout. for (int i = 0; i < GetTabCount(); ++i) { TabGtk* tab = GetTabAt(i); const int tab_max_x = tab->x() + tab->width(); const int hot_width = tab->width() / 3; if (x < tab_max_x) { if (x < tab->x() + hot_width) SetDropIndex(i, true); else if (x >= tab_max_x - hot_width) SetDropIndex(i + 1, true); else SetDropIndex(i, false); return; } } // The drop isn't over a tab, add it to the end. SetDropIndex(GetTabCount(), true); } void TabStripGtk::SetDropIndex(int index, bool drop_before) { if (index == -1) { if (drop_info_.get()) gtk_widget_hide(drop_info_->container); return; } if (drop_info_.get() && !GTK_WIDGET_VISIBLE(drop_info_->container)) gtk_widget_show(drop_info_->container); if (drop_info_.get() && drop_info_->drop_index == index && drop_info_->drop_before == drop_before) { return; } bool is_beneath; gfx::Rect drop_bounds = GetDropBounds(index, drop_before, &is_beneath); if (!drop_info_.get()) { drop_info_.reset(new DropInfo(index, drop_before, !is_beneath)); } else { drop_info_->drop_index = index; drop_info_->drop_before = drop_before; if (is_beneath == drop_info_->point_down) { drop_info_->point_down = !is_beneath; drop_info_->drop_arrow= GetDropArrowImage(drop_info_->point_down); } } gtk_window_move(GTK_WINDOW(drop_info_->container), drop_bounds.x(), drop_bounds.y()); gtk_window_resize(GTK_WINDOW(drop_info_->container), drop_bounds.width(), drop_bounds.height()); } bool TabStripGtk::CompleteDrop(guchar* data) { if (!drop_info_.get()) return false; const int drop_index = drop_info_->drop_index; const bool drop_before = drop_info_->drop_before; // Destroy the drop indicator. drop_info_.reset(); GURL url(reinterpret_cast(data)); if (!url.is_valid()) return false; if (drop_before) { // Insert a new tab. TabContents* contents = model_->delegate()->CreateTabContentsForURL( url, GURL(), model_->profile(), PageTransition::TYPED, false, NULL); model_->AddTabContents(contents, drop_index, false, PageTransition::GENERATED, true); } else { model_->GetTabContentsAt(drop_index)->controller().LoadURL( url, GURL(), PageTransition::GENERATED); model_->SelectTabContentsAt(drop_index, true); } return true; } // static GdkPixbuf* TabStripGtk::GetDropArrowImage(bool is_down) { return ResourceBundle::GetSharedInstance().GetPixbufNamed( is_down ? IDR_TAB_DROP_DOWN : IDR_TAB_DROP_UP); } // TabStripGtk::DropInfo ------------------------------------------------------- TabStripGtk::DropInfo::DropInfo(int drop_index, bool drop_before, bool point_down) : drop_index(drop_index), drop_before(drop_before), point_down(point_down) { container = gtk_window_new(GTK_WINDOW_POPUP); SetContainerColorMap(); gtk_widget_set_app_paintable(container, TRUE); g_signal_connect(G_OBJECT(container), "expose-event", G_CALLBACK(OnExposeEvent), this); gtk_widget_add_events(container, GDK_STRUCTURE_MASK); gtk_window_move(GTK_WINDOW(container), 0, 0); gtk_window_resize(GTK_WINDOW(container), drop_indicator_width, drop_indicator_height); gtk_widget_show_all(container); drop_arrow = GetDropArrowImage(point_down); } TabStripGtk::DropInfo::~DropInfo() { gtk_widget_destroy(container); } // static gboolean TabStripGtk::DropInfo::OnExposeEvent(GtkWidget* widget, GdkEventExpose* event, DropInfo* drop_info) { if (gtk_util::IsScreenComposited()) { drop_info->SetContainerTransparency(); } else { drop_info->SetContainerShapeMask(); } gdk_pixbuf_render_to_drawable(drop_info->drop_arrow, drop_info->container->window, 0, 0, 0, 0, 0, drop_indicator_width, drop_indicator_height, GDK_RGB_DITHER_NONE, 0, 0); return FALSE; } // Sets the color map of the container window to allow the window to be // transparent. void TabStripGtk::DropInfo::SetContainerColorMap() { GdkScreen* screen = gtk_widget_get_screen(container); GdkColormap* colormap = gdk_screen_get_rgba_colormap(screen); // If rgba is not available, use rgb instead. if (!colormap) colormap = gdk_screen_get_rgb_colormap(screen); gtk_widget_set_colormap(container, colormap); } // Sets full transparency for the container window. This is used if // compositing is available for the screen. void TabStripGtk::DropInfo::SetContainerTransparency() { cairo_t* cairo_context = gdk_cairo_create(container->window); if (!cairo_context) return; // Make the background of the dragged tab window fully transparent. All of // the content of the window (child widgets) will be completely opaque. cairo_scale(cairo_context, static_cast(drop_indicator_width), static_cast(drop_indicator_height)); cairo_set_source_rgba(cairo_context, 1.0f, 1.0f, 1.0f, 0.0f); cairo_set_operator(cairo_context, CAIRO_OPERATOR_SOURCE); cairo_paint(cairo_context); cairo_destroy(cairo_context); } // Sets the shape mask for the container window to emulate a transparent // container window. This is used if compositing is not available for the // screen. void TabStripGtk::DropInfo::SetContainerShapeMask() { // Create a 1bpp bitmap the size of |container|. GdkPixmap* pixmap = gdk_pixmap_new(NULL, drop_indicator_width, drop_indicator_height, 1); cairo_t* cairo_context = gdk_cairo_create(GDK_DRAWABLE(pixmap)); // Set the transparency. cairo_set_source_rgba(cairo_context, 1, 1, 1, 0); // Blit the rendered bitmap into a pixmap. Any pixel set in the pixmap will // be opaque in the container window. cairo_set_operator(cairo_context, CAIRO_OPERATOR_SOURCE); gdk_cairo_set_source_pixbuf(cairo_context, drop_arrow, 0, 0); cairo_paint(cairo_context); cairo_destroy(cairo_context); // Set the shape mask. gdk_window_shape_combine_mask(container->window, pixmap, 0, 0); g_object_unref(pixmap); } // Called from: // - animation tick void TabStripGtk::AnimationLayout(double unselected_width) { int tab_height = TabGtk::GetStandardSize().height(); double tab_x = tab_start_x(); for (int i = 0; i < GetTabCount(); ++i) { TabAnimation* animation = active_animation_.get(); if (animation) tab_x += animation->GetGapWidth(i); double tab_width = TabAnimation::GetCurrentTabWidth(this, animation, i); double end_of_tab = tab_x + tab_width; int rounded_tab_x = Round(tab_x); TabGtk* tab = GetTabAt(i); gfx::Rect bounds(rounded_tab_x, 0, Round(end_of_tab) - rounded_tab_x, tab_height); SetTabBounds(tab, bounds); tab_x = end_of_tab + GetTabHOffset(i + 1); } LayoutNewTabButton(tab_x, unselected_width); #if defined(OS_CHROMEOS) LayoutTabOverviewButton(); #endif gtk_widget_queue_draw(tabstrip_.get()); } void TabStripGtk::StartInsertTabAnimation(int index) { // The TabStrip can now use its entire width to lay out Tabs. available_width_for_tabs_ = -1; if (active_animation_.get()) active_animation_->Stop(); active_animation_.reset(new InsertTabAnimation(this, index)); active_animation_->Start(); } void TabStripGtk::StartRemoveTabAnimation(int index, TabContents* contents) { if (active_animation_.get()) { // Some animations (e.g. MoveTabAnimation) cause there to be a Layout when // they're completed (which includes canceled). Since |tab_data_| is now // inconsistent with TabStripModel, doing this Layout will crash now, so // we ask the MoveTabAnimation to skip its Layout (the state will be // corrected by the RemoveTabAnimation we're about to initiate). active_animation_->set_layout_on_completion(false); active_animation_->Stop(); } active_animation_.reset(new RemoveTabAnimation(this, index, contents)); active_animation_->Start(); } void TabStripGtk::StartMoveTabAnimation(int from_index, int to_index) { if (active_animation_.get()) active_animation_->Stop(); active_animation_.reset(new MoveTabAnimation(this, from_index, to_index)); active_animation_->Start(); } void TabStripGtk::StartResizeLayoutAnimation() { if (active_animation_.get()) active_animation_->Stop(); active_animation_.reset(new ResizeLayoutAnimation(this)); active_animation_->Start(); } void TabStripGtk::StartPinnedTabAnimation(int index) { if (active_animation_.get()) active_animation_->Stop(); active_animation_.reset(new PinnedTabAnimation(this, index)); active_animation_->Start(); } void TabStripGtk::StartPinAndMoveTabAnimation(int from_index, int to_index, const gfx::Rect& start_bounds) { if (active_animation_.get()) active_animation_->Stop(); active_animation_.reset( new PinAndMoveAnimation(this, from_index, to_index, start_bounds)); active_animation_->Start(); } bool TabStripGtk::CanUpdateDisplay() { // Don't bother laying out/painting when we're closing all tabs. if (model_->closing_all()) { // Make sure any active animation is ended, too. if (active_animation_.get()) active_animation_->Stop(); return false; } return true; } void TabStripGtk::FinishAnimation(TabStripGtk::TabAnimation* animation, bool layout) { active_animation_.reset(NULL); if (layout) Layout(); } // static gboolean TabStripGtk::OnExpose(GtkWidget* widget, GdkEventExpose* event, TabStripGtk* tabstrip) { if (gdk_region_empty(event->region)) return TRUE; // TODO(jhawkins): Ideally we'd like to only draw what's needed in the damage // rect, but the tab widgets overlap each other, and painting on one widget // will cause an expose-event to be sent to the widgets underneath. The // underlying widget does not need to be redrawn as we control the order of // expose-events. Currently we hack it to redraw the entire tabstrip. We // could change the damage rect to just contain the tabs + the new tab button. event->area.x = 0; event->area.y = 0; event->area.width = tabstrip->bounds_.width(); event->area.height = tabstrip->bounds_.height(); gdk_region_union_with_rect(event->region, &event->area); // Paint the New Tab button. gtk_container_propagate_expose(GTK_CONTAINER(tabstrip->tabstrip_.get()), tabstrip->newtab_button_->widget(), event); #if defined(OS_CHROMEOS) // Paint the tab overview button. gtk_container_propagate_expose(GTK_CONTAINER(tabstrip->tabstrip_.get()), tabstrip->tab_overview_button_->widget(), event); #endif // Paint the tabs in reverse order, so they stack to the left. TabGtk* selected_tab = NULL; int tab_count = tabstrip->GetTabCount(); for (int i = tab_count - 1; i >= 0; --i) { TabGtk* tab = tabstrip->GetTabAt(i); // We must ask the _Tab's_ model, not ourselves, because in some situations // the model will be different to this object, e.g. when a Tab is being // removed after its TabContents has been destroyed. if (!tab->IsSelected()) { gtk_container_propagate_expose(GTK_CONTAINER(tabstrip->tabstrip_.get()), tab->widget(), event); } else { selected_tab = tab; } } // Paint the selected tab last, so it overlaps all the others. if (selected_tab) { gtk_container_propagate_expose(GTK_CONTAINER(tabstrip->tabstrip_.get()), selected_tab->widget(), event); } return TRUE; } // static void TabStripGtk::OnSizeAllocate(GtkWidget* widget, GtkAllocation* allocation, TabStripGtk* tabstrip) { gfx::Rect bounds = gfx::Rect(allocation->x, allocation->y, allocation->width, allocation->height); // Nothing to do if the bounds are the same. If we don't catch this, we'll // get an infinite loop of size-allocate signals. if (tabstrip->bounds_ == bounds) return; tabstrip->SetBounds(bounds); // No tabs, nothing to layout. This happens when a browser window is created // and shown before tabs are added (as in a popup window). if (tabstrip->GetTabCount() == 0) return; // Do a regular layout on the first configure-event so we don't animate // the first tab. // TODO(jhawkins): Windows resizes the layout tabs continuously during // a resize. I need to investigate which signal to watch in order to // reproduce this behavior. if (tabstrip->GetTabCount() == 1) tabstrip->Layout(); else tabstrip->ResizeLayoutTabs(); } // static gboolean TabStripGtk::OnDragMotion(GtkWidget* widget, GdkDragContext* context, gint x, gint y, guint time, TabStripGtk* tabstrip) { tabstrip->UpdateDropIndex(context, x, y); return TRUE; } // static gboolean TabStripGtk::OnDragDrop(GtkWidget* widget, GdkDragContext* context, gint x, gint y, guint time, TabStripGtk* tabstrip) { if (!tabstrip->drop_info_.get()) return FALSE; GdkAtom target = gtk_drag_dest_find_target(widget, context, NULL); if (target != GDK_NONE) gtk_drag_finish(context, FALSE, FALSE, time); else gtk_drag_get_data(widget, context, target, time); return TRUE; } // static gboolean TabStripGtk::OnDragLeave(GtkWidget* widget, GdkDragContext* context, guint time, TabStripGtk* tabstrip) { // Destroy the drop indicator. tabstrip->drop_info_.reset(); return FALSE; } // static gboolean TabStripGtk::OnDragDataReceived(GtkWidget* widget, GdkDragContext* context, gint x, gint y, GtkSelectionData* data, guint info, guint time, TabStripGtk* tabstrip) { bool success = false; // TODO(jhawkins): Parse URI lists. if (info == GtkDndUtil::TEXT_PLAIN) { success = tabstrip->CompleteDrop(data->data); } gtk_drag_finish(context, success, success, time); return TRUE; } // static void TabStripGtk::OnNewTabClicked(GtkWidget* widget, TabStripGtk* tabstrip) { tabstrip->model_->delegate()->AddBlankTab(true); } void TabStripGtk::SetTabBounds(TabGtk* tab, const gfx::Rect& bounds) { gfx::Rect bds = bounds; bds.set_x(gtk_util::MirroredLeftPointForRect(tabstrip_.get(), bounds)); tab->SetBounds(bds); gtk_fixed_move(GTK_FIXED(tabstrip_.get()), tab->widget(), bds.x(), bds.y()); } CustomDrawButton* TabStripGtk::MakeNewTabButton() { CustomDrawButton* button = new CustomDrawButton(IDR_NEWTAB_BUTTON, IDR_NEWTAB_BUTTON_P, IDR_NEWTAB_BUTTON_H, 0, NULL); g_signal_connect(G_OBJECT(button->widget()), "clicked", G_CALLBACK(OnNewTabClicked), this); GTK_WIDGET_UNSET_FLAGS(button->widget(), GTK_CAN_FOCUS); gtk_fixed_put(GTK_FIXED(tabstrip_.get()), button->widget(), 0, 0); return button; } #if defined(OS_CHROMEOS) CustomDrawButton* TabStripGtk::MakeTabOverviewButton() { CustomDrawButton* button = new CustomDrawButton(IDR_TAB_OVERVIEW_BUTTON_ICON, 0, 0, 0, NULL); g_signal_connect(G_OBJECT(button->widget()), "clicked", G_CALLBACK(OnTabOverviewButtonClicked), this); GTK_WIDGET_UNSET_FLAGS(button->widget(), GTK_CAN_FOCUS); gtk_fixed_put(GTK_FIXED(tabstrip_.get()), button->widget(), 0, 0); return button; } // static void TabStripGtk::OnTabOverviewButtonClicked(GtkWidget* widget, TabStripGtk* tabstrip) { Browser* browser = BrowserList::GetLastActive(); DCHECK(browser); // In order for the user to click on the tab there should // be an active browser. TabOverviewTypes::Message message; message.set_type(TabOverviewTypes::Message::WM_SWITCH_TO_OVERVIEW_MODE); GtkWidget* browser_widget = GTK_WIDGET( static_cast(browser->window())->GetNativeHandle()); message.set_param(0, x11_util::GetX11WindowFromGtkWidget(browser_widget)); TabOverviewTypes::instance()->SendMessage(message); UserMetrics::RecordAction(L"TabOverview_PressedTabOverviewButton", tabstrip->model_->profile()); } #endif