1 // Copyright 2013 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 UI_VIEWS_LINUX_UI_LINUX_UI_H_ 6 #define UI_VIEWS_LINUX_UI_LINUX_UI_H_ 7 8 #include <string> 9 10 #include "base/callback.h" 11 #include "third_party/skia/include/core/SkColor.h" 12 #include "ui/base/ime/linux/linux_input_method_context_factory.h" 13 #include "ui/events/linux/text_edit_key_bindings_delegate_auralinux.h" 14 #include "ui/gfx/linux_font_delegate.h" 15 #include "ui/shell_dialogs/linux_shell_dialog.h" 16 #include "ui/views/controls/button/button.h" 17 #include "ui/views/linux_ui/status_icon_linux.h" 18 #include "ui/views/views_export.h" 19 20 // The main entrypoint into Linux toolkit specific code. GTK code should only 21 // be executed behind this interface. 22 23 namespace aura { 24 class Window; 25 } 26 27 namespace gfx { 28 class Image; 29 } 30 31 namespace ui { 32 class NativeTheme; 33 } 34 35 namespace views { 36 class Border; 37 class LabelButton; 38 class LabelButtonBorder; 39 class View; 40 class WindowButtonOrderObserver; 41 42 // Adapter class with targets to render like different toolkits. Set by any 43 // project that wants to do linux desktop native rendering. 44 // 45 // TODO(erg): We're hardcoding GTK2, when we'll need to have backends for (at 46 // minimum) GTK2 and GTK3. LinuxUI::instance() should actually be a very 47 // complex method that pokes around with dlopen against a libuigtk2.so, a 48 // liuigtk3.so, etc. 49 class VIEWS_EXPORT LinuxUI : public ui::LinuxInputMethodContextFactory, 50 public gfx::LinuxFontDelegate, 51 public ui::LinuxShellDialog, 52 public ui::TextEditKeyBindingsDelegateAuraLinux { 53 public: 54 // Describes the window management actions that could be taken in response to 55 // a middle click in the non client area. 56 enum NonClientMiddleClickAction { 57 MIDDLE_CLICK_ACTION_NONE, 58 MIDDLE_CLICK_ACTION_LOWER, 59 MIDDLE_CLICK_ACTION_MINIMIZE, 60 MIDDLE_CLICK_ACTION_TOGGLE_MAXIMIZE 61 }; 62 63 typedef base::Callback<ui::NativeTheme*(aura::Window* window)> 64 NativeThemeGetter; 65 66 virtual ~LinuxUI() {} 67 68 // Sets the dynamically loaded singleton that draws the desktop native UI. 69 static void SetInstance(LinuxUI* instance); 70 71 // Returns a LinuxUI instance for the toolkit used in the user's desktop 72 // environment. 73 // 74 // Can return NULL, in case no toolkit has been set. (For example, if we're 75 // running with the "--ash" flag.) 76 static LinuxUI* instance(); 77 78 virtual void Initialize() = 0; 79 80 // Returns a themed image per theme_provider.h 81 virtual gfx::Image GetThemeImageNamed(int id) const = 0; 82 virtual bool GetColor(int id, SkColor* color) const = 0; 83 virtual bool HasCustomImage(int id) const = 0; 84 85 // Returns the preferences that we pass to WebKit. 86 virtual SkColor GetFocusRingColor() const = 0; 87 virtual SkColor GetThumbActiveColor() const = 0; 88 virtual SkColor GetThumbInactiveColor() const = 0; 89 virtual SkColor GetTrackColor() const = 0; 90 virtual SkColor GetActiveSelectionBgColor() const = 0; 91 virtual SkColor GetActiveSelectionFgColor() const = 0; 92 virtual SkColor GetInactiveSelectionBgColor() const = 0; 93 virtual SkColor GetInactiveSelectionFgColor() const = 0; 94 virtual double GetCursorBlinkInterval() const = 0; 95 96 // Returns a NativeTheme that will provide system colors and draw system 97 // style widgets. 98 virtual ui::NativeTheme* GetNativeTheme(aura::Window* window) const = 0; 99 100 // Used to set an override NativeTheme. 101 virtual void SetNativeThemeOverride(const NativeThemeGetter& callback) = 0; 102 103 // Returns whether we should be using the native theme provided by this 104 // object by default. 105 virtual bool GetDefaultUsesSystemTheme() const = 0; 106 107 // Sets visual properties in the desktop environment related to download 108 // progress, if available. 109 virtual void SetDownloadCount(int count) const = 0; 110 virtual void SetProgressFraction(float percentage) const = 0; 111 112 // Checks for platform support for status icons. 113 virtual bool IsStatusIconSupported() const = 0; 114 115 // Create a native status icon. 116 virtual scoped_ptr<StatusIconLinux> CreateLinuxStatusIcon( 117 const gfx::ImageSkia& image, 118 const base::string16& tool_tip) const = 0; 119 120 // Returns the icon for a given content type from the icon theme. 121 // TODO(davidben): Add an observer for the theme changing, so we can drop the 122 // caches. 123 virtual gfx::Image GetIconForContentType( 124 const std::string& content_type, int size) const = 0; 125 126 // Builds a Border which paints the native button style. 127 virtual scoped_ptr<Border> CreateNativeBorder( 128 views::LabelButton* owning_button, 129 scoped_ptr<views::LabelButtonBorder> border) = 0; 130 131 // Notifies the observer about changes about how window buttons should be 132 // laid out. If the order is anything other than the default min,max,close on 133 // the right, will immediately send a button change event to the observer. 134 virtual void AddWindowButtonOrderObserver( 135 WindowButtonOrderObserver* observer) = 0; 136 137 // Removes the observer from the LinuxUI's list. 138 virtual void RemoveWindowButtonOrderObserver( 139 WindowButtonOrderObserver* observer) = 0; 140 141 // Determines whether the user's window manager is Unity. 142 virtual bool UnityIsRunning() = 0; 143 144 // What action we should take when the user middle clicks on non-client 145 // area. The default is lowering the window. 146 virtual NonClientMiddleClickAction GetNonClientMiddleClickAction() = 0; 147 148 // Notifies the window manager that start up has completed. 149 // Normally Chromium opens a new window on startup and GTK does this 150 // automatically. In case Chromium does not open a new window on startup, 151 // e.g. an existing browser window already exists, this should be called. 152 virtual void NotifyWindowManagerStartupComplete() = 0; 153 }; 154 155 } // namespace views 156 157 #endif // UI_VIEWS_LINUX_UI_LINUX_UI_H_ 158
