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.
5 #ifndef CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_
6 #define CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_
10 #include "base/basictypes.h"
11 #include "base/compiler_specific.h"
12 #include "chrome/browser/ui/libgtk2ui/libgtk2ui_export.h"
13 #include "chrome/browser/ui/libgtk2ui/owned_widget_gtk2.h"
14 #include "ui/base/linux_ui.h"
15 #include "ui/gfx/color_utils.h"
17 typedef struct _GdkColor GdkColor
;
18 typedef struct _GtkStyle GtkStyle
;
19 typedef struct _GtkWidget GtkWidget
;
29 // Interface to GTK2 desktop features.
31 class Gtk2UI
: public ui::LinuxUI
{
37 virtual bool UseNativeTheme() const OVERRIDE
;
38 virtual gfx::Image
* GetThemeImageNamed(int id
) const OVERRIDE
;
39 virtual bool GetColor(int id
, SkColor
* color
) const OVERRIDE
;
40 virtual ui::SelectFileDialog
* CreateSelectFileDialog(
41 ui::SelectFileDialog::Listener
* listener
,
42 ui::SelectFilePolicy
* policy
) const OVERRIDE
;
45 typedef std::map
<int, SkColor
> ColorMap
;
46 typedef std::map
<int, color_utils::HSL
> TintMap
;
47 typedef std::map
<int, gfx::Image
*> ImageCache
;
49 // This method returns the colors webkit will use for the scrollbars. When no
50 // colors are specified by the GTK+ theme, this function averages of the
51 // thumb part and of the track colors.
52 void GetScrollbarColors(GdkColor
* thumb_active_color
,
53 GdkColor
* thumb_inactive_color
,
54 GdkColor
* track_color
);
56 // Extracts colors and tints from the GTK theme, both for the
57 // ThemeService interface and the colors we send to webkit.
60 // Reads in explicit theme frame colors from the ChromeGtkFrame style class
61 // or generates them per our fallback algorithm.
62 GdkColor
BuildFrameColors(GtkStyle
* frame_style
);
64 // Sets the underlying theme colors/tints from a GTK color.
65 void SetThemeColorFromGtk(int id
, const GdkColor
* color
);
66 void SetThemeTintFromGtk(int id
, const GdkColor
* color
);
68 // Creates and returns a frame color, either using |gtk_base| verbatim if
69 // non-NULL, or tinting |base| with |tint|. Also sets |color_id| and
70 // |tint_id| to the returned color.
71 GdkColor
BuildAndSetFrameColor(const GdkColor
* base
,
72 const GdkColor
* gtk_base
,
73 const color_utils::HSL
& tint
,
77 // Lazily generates each bitmap used in the gtk theme.
78 SkBitmap
GenerateGtkThemeBitmap(int id
) const;
80 // Creates a GTK+ version of IDR_THEME_FRAME. Instead of tinting, this
81 // creates a theme configurable gradient ending with |color_id| at the
82 // bottom, and |gradient_name| at the top if that color is specified in the
84 SkBitmap
GenerateFrameImage(int color_id
,
85 const char* gradient_name
) const;
87 // Takes the base frame image |base_id| and tints it with |tint_id|.
88 SkBitmap
GenerateTabImage(int base_id
) const;
90 // Tints an icon based on tint.
91 SkBitmap
GenerateTintedIcon(int base_id
,
92 const color_utils::HSL
& tint
) const;
94 // Renders a GTK icon as a SkBitmap, with prelight/active border if
96 SkBitmap
GenerateGTKIcon(int base_id
) const;
98 // Renders a GTK button border around a tinted wrench icon.
99 SkBitmap
GenerateWrenchIcon(int base_id
) const;
101 // Returns the tint for buttons that contrasts with the normal window
103 void GetNormalButtonTintHSL(color_utils::HSL
* tint
) const;
105 // Returns a tint that's the color of the current normal text in an entry.
106 void GetNormalEntryForegroundHSL(color_utils::HSL
* tint
) const;
108 // Returns a tint that's the color of the current highlighted text in an
110 void GetSelectedEntryForegroundHSL(color_utils::HSL
* tint
) const;
112 // Draws the GTK button border for state |gtk_state| onto a bitmap.
113 SkBitmap
DrawGtkButtonBorder(int gtk_state
, int width
, int height
) const;
115 // Frees all calculated images and color data.
116 void ClearAllThemeData();
118 GtkWidget
* fake_window_
;
119 GtkWidget
* fake_frame_
;
120 OwnedWidgetGtk fake_label_
;
121 OwnedWidgetGtk fake_entry_
;
123 // Tints and colors calculated by LoadGtkValues() that are given to the
124 // caller while |use_gtk_| is true.
128 // Colors used to tint certain icons.
129 color_utils::HSL button_tint_
;
130 color_utils::HSL entry_tint_
;
131 color_utils::HSL selected_entry_tint_
;
133 // Colors that we pass to WebKit. These are generated each time the theme
135 SkColor focus_ring_color_
;
136 SkColor thumb_active_color_
;
137 SkColor thumb_inactive_color_
;
138 SkColor track_color_
;
139 SkColor active_selection_bg_color_
;
140 SkColor active_selection_fg_color_
;
141 SkColor inactive_selection_bg_color_
;
142 SkColor inactive_selection_fg_color_
;
144 // Image cache of lazily created images.
145 mutable ImageCache gtk_images_
;
147 DISALLOW_COPY_AND_ASSIGN(Gtk2UI
);
150 } // namespace libgtk2ui
152 // Access point to the GTK2 desktop system. This should be the only symbol that
153 // is exported in the library; everything else should be used through the
154 // interface, because eventually this .so will be loaded through dlopen at
155 // runtime so our main binary can conditionally load GTK2 or GTK3 or EFL or
157 LIBGTK2UI_EXPORT
ui::LinuxUI
* BuildGtk2UI();
159 #endif // CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_