1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_GTK_H_ 6 #define CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_GTK_H_ 7 8 #include <gtk/gtk.h> 9 10 #include "base/basictypes.h" 11 #include "base/memory/scoped_ptr.h" 12 #include "chrome/browser/infobars/infobar.h" 13 #include "chrome/browser/infobars/infobar_delegate.h" 14 #include "chrome/browser/ui/gtk/menu_gtk.h" 15 #include "content/public/browser/notification_observer.h" 16 #include "content/public/browser/notification_registrar.h" 17 #include "third_party/skia/include/core/SkColor.h" 18 #include "ui/base/gtk/gtk_signal.h" 19 #include "ui/base/gtk/owned_widget_gtk.h" 20 21 class CustomDrawButton; 22 class GtkThemeService; 23 24 namespace ui { 25 class GtkSignalRegistrar; 26 class MenuModel; 27 } 28 29 class InfoBarGtk : public InfoBar, 30 public content::NotificationObserver { 31 public: 32 // Conversion from cairo colors to SkColor. 33 typedef void (InfoBarGtk::*ColorGetter)(InfoBarDelegate::Type, 34 double* r, double* g, double* b); 35 36 explicit InfoBarGtk(scoped_ptr<InfoBarDelegate> delegate); 37 virtual ~InfoBarGtk(); 38 39 // Get the top level native GTK widget for this infobar. widget()40 GtkWidget* widget() { return widget_.get(); } 41 42 GdkColor GetBorderColor() const; 43 44 // Returns the target height of the infobar if the bar is animating, 45 // otherwise 0. We care about this number since we want to prevent 46 // unnecessary renderer repaints while animating. 47 int AnimatingHeight() const; 48 49 SkColor ConvertGetColor(ColorGetter getter); 50 51 // Retrieves the component colors for the infobar's background 52 // gradient. (This varies by infobars and can be animated to change). 53 virtual void GetTopColor(InfoBarDelegate::Type type, 54 double* r, double* g, double* b); 55 virtual void GetBottomColor(InfoBarDelegate::Type type, 56 double* r, double* g, double* b); 57 58 protected: 59 // Spacing after message (and before buttons). 60 static const int kEndOfLabelSpacing; 61 62 // InfoBar: 63 64 // Inits any widgets and related objects necessary. 65 // 66 // NOTE: Subclasses who need to init widgets should override this function and 67 // explicitly call their parent's implementation first, then continue with 68 // further work they need to do. Failing to call the parent implementation 69 // first (or at all), or setting up widgets in the constructor instead of 70 // here, will lead to bad side effects like crashing. 71 virtual void PlatformSpecificSetOwner() OVERRIDE; 72 73 virtual void PlatformSpecificShow(bool animate) OVERRIDE; 74 virtual void PlatformSpecificOnCloseSoon() OVERRIDE; 75 virtual void PlatformSpecificOnHeightsRecalculated() OVERRIDE; 76 77 // content::NotificationObserver: 78 virtual void Observe(int type, 79 const content::NotificationSource& source, 80 const content::NotificationDetails& details) OVERRIDE; 81 82 // Styles the close button as if we're doing Chrome-stlye widget rendering. 83 void ForceCloseButtonToUseChromeTheme(); 84 hbox()85 GtkWidget* hbox() { return hbox_; } 86 87 // Returns the signal registrar for this infobar. All signals representing 88 // user actions on visible widgets must go through this registrar! signals()89 ui::GtkSignalRegistrar* signals() { return signals_.get(); } 90 91 // Creates a label with the appropriate font and color for the current 92 // gtk-theme state. It is InfoBarGtk's responsibility to observe browser 93 // theme changes and update the label's state. 94 GtkWidget* CreateLabel(const std::string& text); 95 96 // Creates a link button with the appropriate current gtk-theme state. 97 GtkWidget* CreateLinkButton(const std::string& text); 98 99 // Builds a button with an arrow in it to emulate the menu-button style from 100 // the windows version. 101 static GtkWidget* CreateMenuButton(const std::string& text); 102 103 // Adds |display_text| to the infobar. If |link_text| is not empty, it is 104 // rendered as a hyperlink and inserted into |display_text| at |link_offset|, 105 // or right aligned in the infobar if |link_offset| is |npos|. If a link is 106 // supplied, |link_callback| must not be null. It will be invoked on click. 107 void AddLabelWithInlineLink(const base::string16& display_text, 108 const base::string16& link_text, 109 size_t link_offset, 110 GCallback callback); 111 112 // Shows the menu with |model| with the context of |sender|. 113 void ShowMenuWithModel(GtkWidget* sender, 114 MenuGtk::Delegate* delegate, 115 ui::MenuModel* model); 116 117 private: 118 void GetBackgroundColor(SkColor color, double* r, double* g, double* b); 119 void UpdateBorderColor(); 120 121 CHROMEGTK_CALLBACK_0(InfoBarGtk, void, OnCloseButton); 122 CHROMEGTK_CALLBACK_1(InfoBarGtk, gboolean, OnBackgroundExpose, 123 GdkEventExpose*); 124 CHROMEGTK_CALLBACK_2(InfoBarGtk, void, OnChildSizeRequest, GtkWidget*, 125 GtkRequisition*); 126 127 // A GtkExpandedContainer that contains |bg_box_| so we can vary the height of 128 // the infobar. 129 ui::OwnedWidgetGtk widget_; 130 131 // The second highest widget in the hierarchy (after the |widget_|). 132 GtkWidget* bg_box_; 133 134 // The hbox that holds infobar elements (button, text, icon, etc.). 135 GtkWidget* hbox_; 136 137 // The x that closes the bar. 138 scoped_ptr<CustomDrawButton> close_button_; 139 140 // The theme provider, used for getting border colors. 141 GtkThemeService* theme_service_; 142 143 content::NotificationRegistrar registrar_; 144 145 // A list of signals which we clear out once we're closing. 146 scoped_ptr<ui::GtkSignalRegistrar> signals_; 147 148 // The current menu displayed. Can be null. We own this on the base class so 149 // we can cancel the menu while we're closing. 150 scoped_ptr<MenuGtk> menu_; 151 152 DISALLOW_COPY_AND_ASSIGN(InfoBarGtk); 153 }; 154 155 #endif // CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_GTK_H_ 156