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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_LIBGTKUI_GTK_UTIL_H_
#define CHROME_BROWSER_UI_LIBGTKUI_GTK_UTIL_H_
#include <gtk/gtk.h>
#include <string>
#include "ui/native_theme/native_theme.h"
namespace aura {
class Window;
}
namespace base {
class CommandLine;
class Environment;
}
namespace ui {
class Accelerator;
}
namespace libgtkui {
extern const SkColor kInvalidColorIdColor;
extern const SkColor kURLTextColor;
// Generates the normal URL color, a green color used in unhighlighted URL
// text. It is a mix of |kURLTextColor| and the current text color. Unlike the
// selected text color, it is more important to match the qualities of the
// foreground typeface color instead of taking the background into account.
SkColor NormalURLColor(SkColor foreground);
// Generates the selected URL color, a green color used on URL text in the
// currently highlighted entry in the autocomplete popup. It's a mix of
// |kURLTextColor|, the current text color, and the background color (the
// select highlight). It is more important to contrast with the background
// saturation than to look exactly like the foreground color.
SkColor SelectedURLColor(SkColor foreground, SkColor background);
void GtkInitFromCommandLine(const base::CommandLine& command_line);
// Returns the name of the ".desktop" file associated with our running process.
std::string GetDesktopName(base::Environment* env);
guint GetGdkKeyCodeForAccelerator(const ui::Accelerator& accelerator);
GdkModifierType GetGdkModifierForAccelerator(
const ui::Accelerator& accelerator);
// Translates event flags into plaform independent event flags.
int EventFlagsFromGdkState(guint state);
// Style a GTK button as a BlueButton
void TurnButtonBlue(GtkWidget* button);
// Sets |dialog| as transient for |parent|, which will keep it on top and center
// it above |parent|. Do nothing if |parent| is NULL.
void SetGtkTransientForAura(GtkWidget* dialog, aura::Window* parent);
// Gets the transient parent aura window for |dialog|.
aura::Window* GetAuraTransientParent(GtkWidget* dialog);
// Clears the transient parent for |dialog|.
void ClearAuraTransientParent(GtkWidget* dialog);
#if GTK_MAJOR_VERSION > 2
// These constants are defined in gtk/gtkenums.h in Gtk3.12 or later.
// They are added here as a convenience to avoid version checks, and
// can be removed once the sysroot is switched from Wheezy to Jessie.
#define GTK_STATE_FLAG_LINK static_cast<GtkStateFlags>(1 << 9)
#define GTK_STATE_FLAG_VISITED static_cast<GtkStateFlags>(1 << 10)
#define GTK_STATE_FLAG_CHECKED static_cast<GtkStateFlags>(1 << 11)
// Returns true iff the runtime version of Gtk used meets
// |major|.|minor|.|micro|.
bool GtkVersionCheck(int major, int minor = 0, int micro = 0);
template <typename T>
class ScopedGObject {
public:
explicit ScopedGObject(T* obj) : obj_(obj) {
// Increase the reference count of |obj_|, removing the floating
// reference if it has one.
g_object_ref_sink(obj_);
}
ScopedGObject(const ScopedGObject<T>& other) : obj_(other.obj_) {
g_object_ref(obj_);
}
ScopedGObject(ScopedGObject<T>&& other) : obj_(other.obj_) {
other.obj_ = nullptr;
}
~ScopedGObject() {
if (obj_)
g_object_unref(obj_);
}
ScopedGObject<T>& operator=(const ScopedGObject<T>& other) {
g_object_ref(other.obj_);
g_object_unref(obj_);
obj_ = other.obj_;
return *this;
}
ScopedGObject<T>& operator=(ScopedGObject<T>&& other) {
g_object_unref(obj_);
obj_ = other.obj_;
other.obj_ = nullptr;
return *this;
}
operator T*() { return obj_; }
private:
T* obj_;
};
typedef ScopedGObject<GtkStyleContext> ScopedStyleContext;
// Parses |css_selector| into a GtkStyleContext. The format is a
// sequence of whitespace-separated objects. Each object may have at
// most one object name at the beginning of the string, and any number
// of '.'-prefixed classes and ':'-prefixed pseudoclasses. An example
// is "GtkButton.button.suggested-action:hover:active". The caller
// must g_object_unref() the returned context.
ScopedStyleContext GetStyleContextFromCss(const char* css_selector);
// Get the 'color' property from the style context created by
// GetStyleContextFromCss(|css_selector|).
SkColor GetFgColor(const char* css_selector);
// Renders a background from the style context created by
// GetStyleContextFromCss(|css_selector|) into a single pixel and
// returns the color.
SkColor GetBgColor(const char* css_selector);
// If there is a border, renders the border from the style context
// created by GetStyleContextFromCss(|css_selector|) into a single
// pixel and returns the color. Otherwise returns kInvalidColor.
SkColor GetBorderColor(const char* css_selector);
#endif
} // namespace libgtkui
#endif // CHROME_BROWSER_UI_LIBGTKUI_GTK_UTIL_H_
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