hover_controller_gtk.cc revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e
1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "chrome/browser/ui/gtk/hover_controller_gtk.h" 6 7#include "base/message_loop/message_loop.h" 8#include "chrome/browser/ui/gtk/gtk_chrome_button.h" 9#include "ui/gfx/gtk_compat.h" 10 11static const gchar* kHoverControllerGtkKey = "__HOVER_CONTROLLER_GTK__"; 12 13HoverControllerGtk::HoverControllerGtk(GtkWidget* button) 14 : throb_animation_(this), 15 hover_animation_(this), 16 button_(button) { 17 g_object_ref(button_); 18 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0); 19 20 signals_.Connect(button_, "enter-notify-event", 21 G_CALLBACK(OnEnterThunk), this); 22 signals_.Connect(button_, "leave-notify-event", 23 G_CALLBACK(OnLeaveThunk), this); 24 signals_.Connect(button_, "destroy", 25 G_CALLBACK(OnDestroyThunk), this); 26 signals_.Connect(button_, "hierarchy-changed", 27 G_CALLBACK(OnHierarchyChangedThunk), this); 28 29#ifndef NDEBUG 30 if (g_object_get_data(G_OBJECT(button_), kHoverControllerGtkKey)) 31 NOTREACHED(); 32#endif // !NDEBUG 33 34 g_object_set_data(G_OBJECT(button), kHoverControllerGtkKey, this); 35} 36 37HoverControllerGtk::~HoverControllerGtk() { 38} 39 40void HoverControllerGtk::StartThrobbing(int cycles) { 41 throb_animation_.StartThrobbing(cycles); 42} 43 44// static 45GtkWidget* HoverControllerGtk::CreateChromeButton() { 46 GtkWidget* widget = gtk_chrome_button_new(); 47 new HoverControllerGtk(widget); 48 return widget; 49} 50 51// static 52HoverControllerGtk* HoverControllerGtk::GetHoverControllerGtk( 53 GtkWidget* button) { 54 return reinterpret_cast<HoverControllerGtk*>( 55 g_object_get_data(G_OBJECT(button), kHoverControllerGtkKey)); 56} 57 58void HoverControllerGtk::Destroy() { 59 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), -1.0); 60 61 g_object_set_data(G_OBJECT(button_), kHoverControllerGtkKey, NULL); 62 g_object_unref(button_); 63 button_ = NULL; 64 65 delete this; 66} 67 68void HoverControllerGtk::AnimationProgressed(const gfx::Animation* animation) { 69 if (!button_) 70 return; 71 72 // Ignore the hover animation if we are throbbing. 73 if (animation == &hover_animation_ && throb_animation_.is_animating()) 74 return; 75 76 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 77 animation->GetCurrentValue()); 78} 79 80void HoverControllerGtk::AnimationEnded(const gfx::Animation* animation) { 81 if (!button_) 82 return; 83 if (animation != &throb_animation_) 84 return; 85 86 if (throb_animation_.cycles_remaining() <= 1) 87 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0); 88} 89 90void HoverControllerGtk::AnimationCanceled(const gfx::Animation* animation) { 91 AnimationEnded(animation); 92} 93 94gboolean HoverControllerGtk::OnEnter(GtkWidget* widget, 95 GdkEventCrossing* event) { 96 hover_animation_.Show(); 97 98 return FALSE; 99} 100 101gboolean HoverControllerGtk::OnLeave(GtkWidget* widget, 102 GdkEventCrossing* event) { 103 // When the user is holding a mouse button, we don't want to animate. 104 if (event->state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)) { 105 hover_animation_.Reset(); 106 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0); 107 } else { 108 hover_animation_.Hide(); 109 } 110 111 return FALSE; 112} 113 114void HoverControllerGtk::OnHierarchyChanged(GtkWidget* widget, 115 GtkWidget* previous_toplevel) { 116 // GTK+ does not emit leave-notify-event signals when a widget 117 // becomes unanchored, so manually unset the hover states. 118 if (!gtk_widget_is_toplevel(gtk_widget_get_toplevel(widget))) { 119 gtk_widget_set_state(button_, GTK_STATE_NORMAL); 120 hover_animation_.Reset(); 121 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0.0); 122 } 123} 124 125void HoverControllerGtk::OnDestroy(GtkWidget* widget) { 126 Destroy(); 127} 128