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| 1 // Copyright (c) 2010 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/gtk/hover_controller_gtk.h" | |
| 6 | |
| 7 #include "base/message_loop.h" | |
| 8 #include "chrome/browser/gtk/gtk_chrome_button.h" | |
| 9 | |
| 10 static const gchar* kHoverControllerGtkKey = "__HOVER_CONTROLLER_GTK__"; | |
| 11 | |
| 12 HoverControllerGtk::HoverControllerGtk(GtkWidget* button) | |
| 13 : throb_animation_(this), | |
| 14 hover_animation_(this), | |
| 15 button_(button) { | |
| 16 g_object_ref(button_); | |
| 17 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0); | |
| 18 | |
| 19 signals_.Connect(button_, "enter-notify-event", | |
| 20 G_CALLBACK(OnEnterThunk), this); | |
| 21 signals_.Connect(button_, "leave-notify-event", | |
| 22 G_CALLBACK(OnLeaveThunk), this); | |
| 23 signals_.Connect(button_, "destroy", | |
| 24 G_CALLBACK(OnDestroyThunk), this); | |
| 25 signals_.Connect(button_, "hierarchy-changed", | |
| 26 G_CALLBACK(OnHierarchyChangedThunk), this); | |
| 27 | |
| 28 #ifndef NDEBUG | |
| 29 if (g_object_get_data(G_OBJECT(button_), kHoverControllerGtkKey)) | |
| 30 NOTREACHED(); | |
| 31 #endif // !NDEBUG | |
| 32 | |
| 33 g_object_set_data(G_OBJECT(button), kHoverControllerGtkKey, this); | |
| 34 } | |
| 35 | |
| 36 HoverControllerGtk::~HoverControllerGtk() { | |
| 37 } | |
| 38 | |
| 39 void HoverControllerGtk::StartThrobbing(int cycles) { | |
| 40 throb_animation_.StartThrobbing(cycles); | |
| 41 } | |
| 42 | |
| 43 // static | |
| 44 GtkWidget* HoverControllerGtk::CreateChromeButton() { | |
| 45 GtkWidget* widget = gtk_chrome_button_new(); | |
| 46 new HoverControllerGtk(widget); | |
| 47 return widget; | |
| 48 } | |
| 49 | |
| 50 // static | |
| 51 HoverControllerGtk* HoverControllerGtk::GetHoverControllerGtk( | |
| 52 GtkWidget* button) { | |
| 53 return reinterpret_cast<HoverControllerGtk*>( | |
| 54 g_object_get_data(G_OBJECT(button), kHoverControllerGtkKey)); | |
| 55 } | |
| 56 | |
| 57 void HoverControllerGtk::Destroy() { | |
| 58 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), -1.0); | |
| 59 | |
| 60 g_object_set_data(G_OBJECT(button_), kHoverControllerGtkKey, NULL); | |
| 61 g_object_unref(button_); | |
| 62 button_ = NULL; | |
| 63 | |
| 64 delete this; | |
| 65 } | |
| 66 | |
| 67 void HoverControllerGtk::AnimationProgressed(const ui::Animation* animation) { | |
| 68 if (!button_) | |
| 69 return; | |
| 70 | |
| 71 // Ignore the hover animation if we are throbbing. | |
| 72 if (animation == &hover_animation_ && throb_animation_.is_animating()) | |
| 73 return; | |
| 74 | |
| 75 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), | |
| 76 animation->GetCurrentValue()); | |
| 77 } | |
| 78 | |
| 79 void HoverControllerGtk::AnimationEnded(const ui::Animation* animation) { | |
| 80 if (!button_) | |
| 81 return; | |
| 82 if (animation != &throb_animation_) | |
| 83 return; | |
| 84 | |
| 85 if (throb_animation_.cycles_remaining() <= 1) | |
| 86 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0); | |
| 87 } | |
| 88 | |
| 89 void HoverControllerGtk::AnimationCanceled(const ui::Animation* animation) { | |
| 90 AnimationEnded(animation); | |
| 91 } | |
| 92 | |
| 93 gboolean HoverControllerGtk::OnEnter(GtkWidget* widget, | |
| 94 GdkEventCrossing* event) { | |
| 95 hover_animation_.Show(); | |
| 96 | |
| 97 return FALSE; | |
| 98 } | |
| 99 | |
| 100 gboolean HoverControllerGtk::OnLeave(GtkWidget* widget, | |
| 101 GdkEventCrossing* event) { | |
| 102 // When the user is holding a mouse button, we don't want to animate. | |
| 103 if (event->state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)) { | |
| 104 hover_animation_.Reset(); | |
| 105 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0); | |
| 106 } else { | |
| 107 hover_animation_.Hide(); | |
| 108 } | |
| 109 | |
| 110 return FALSE; | |
| 111 } | |
| 112 | |
| 113 void HoverControllerGtk::OnHierarchyChanged(GtkWidget* widget, | |
| 114 GtkWidget* previous_toplevel) { | |
| 115 // GTK+ does not emit leave-notify-event signals when a widget | |
| 116 // becomes unanchored, so manually unset the hover states. | |
| 117 if (!GTK_WIDGET_TOPLEVEL(gtk_widget_get_toplevel(widget))) { | |
| 118 gtk_widget_set_state(button_, GTK_STATE_NORMAL); | |
| 119 hover_animation_.Reset(); | |
| 120 gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0.0); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 void HoverControllerGtk::OnDestroy(GtkWidget* widget) { | |
| 125 Destroy(); | |
| 126 } | |
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