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      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 #include "chrome/browser/themes/theme_service_aurax11.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/prefs/pref_service.h"
      9 #include "chrome/browser/profiles/profile.h"
     10 #include "chrome/browser/themes/custom_theme_supplier.h"
     11 #include "chrome/common/pref_names.h"
     12 #include "ui/gfx/image/image.h"
     13 #include "ui/native_theme/native_theme_aura.h"
     14 #include "ui/views/linux_ui/linux_ui.h"
     15 
     16 namespace {
     17 
     18 class SystemThemeX11 : public CustomThemeSupplier {
     19  public:
     20   explicit SystemThemeX11(PrefService* pref_service);
     21 
     22   // Overridden from CustomThemeSupplier:
     23   virtual void StartUsingTheme() OVERRIDE;
     24   virtual void StopUsingTheme() OVERRIDE;
     25   virtual bool GetColor(int id, SkColor* color) const OVERRIDE;
     26   virtual gfx::Image GetImageNamed(int id) OVERRIDE;
     27   virtual bool HasCustomImage(int id) const OVERRIDE;
     28 
     29  private:
     30   virtual ~SystemThemeX11();
     31 
     32   // These pointers are not owned by us.
     33   views::LinuxUI* const linux_ui_;
     34   PrefService* const pref_service_;
     35 
     36   DISALLOW_COPY_AND_ASSIGN(SystemThemeX11);
     37 };
     38 
     39 SystemThemeX11::SystemThemeX11(PrefService* pref_service)
     40     : CustomThemeSupplier(NATIVE_X11),
     41       linux_ui_(views::LinuxUI::instance()),
     42       pref_service_(pref_service) {}
     43 
     44 void SystemThemeX11::StartUsingTheme() {
     45   pref_service_->SetBoolean(prefs::kUsesSystemTheme, true);
     46   // Have the former theme notify its observers of change.
     47   ui::NativeThemeAura::instance()->NotifyObservers();
     48 }
     49 
     50 void SystemThemeX11::StopUsingTheme() {
     51   pref_service_->SetBoolean(prefs::kUsesSystemTheme, false);
     52   // Have the former theme notify its observers of change.
     53   if (linux_ui_)
     54     linux_ui_->GetNativeTheme(NULL)->NotifyObservers();
     55 }
     56 
     57 bool SystemThemeX11::GetColor(int id, SkColor* color) const {
     58   return linux_ui_ && linux_ui_->GetColor(id, color);
     59 }
     60 
     61 gfx::Image SystemThemeX11::GetImageNamed(int id) {
     62   return linux_ui_ ? linux_ui_->GetThemeImageNamed(id) : gfx::Image();
     63 }
     64 
     65 bool SystemThemeX11::HasCustomImage(int id) const {
     66   return linux_ui_ && linux_ui_->HasCustomImage(id);
     67 }
     68 
     69 SystemThemeX11::~SystemThemeX11() {}
     70 
     71 }  // namespace
     72 
     73 ThemeServiceAuraX11::ThemeServiceAuraX11() {}
     74 
     75 ThemeServiceAuraX11::~ThemeServiceAuraX11() {}
     76 
     77 bool ThemeServiceAuraX11::ShouldInitWithSystemTheme() const {
     78   return profile()->GetPrefs()->GetBoolean(prefs::kUsesSystemTheme);
     79 }
     80 
     81 void ThemeServiceAuraX11::UseSystemTheme() {
     82   SetCustomDefaultTheme(new SystemThemeX11(profile()->GetPrefs()));
     83 }
     84 
     85 bool ThemeServiceAuraX11::IsSystemThemeDistinctFromDefaultTheme() const {
     86   return true;
     87 }
     88 
     89 bool ThemeServiceAuraX11::UsingDefaultTheme() const {
     90   return ThemeService::UsingDefaultTheme() && !UsingSystemTheme();
     91 }
     92 
     93 bool ThemeServiceAuraX11::UsingSystemTheme() const {
     94   const CustomThemeSupplier* theme_supplier = get_theme_supplier();
     95   return theme_supplier &&
     96          theme_supplier->get_theme_type() == CustomThemeSupplier::NATIVE_X11;
     97 }
     98