content/child/webthemeengine_impl_android.cc - chromium/src - Git at Google

 // Copyright 2014 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.

 #include "content/child/webthemeengine_impl_android.h"

 #include "base/logging.h"
 #include "base/system/sys_info.h"
 #include "content/child/webthemeengine_impl_conversions.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/blink/public/platform/web_rect.h"
 #include "third_party/blink/public/platform/web_size.h"
 #include "ui/native_theme/native_theme.h"

 using blink::WebColorScheme;
 using blink::WebRect;
 using blink::WebThemeEngine;

 namespace content {

 namespace {
   const int kVersionLollipop = 5;

   int getMajorVersion() {
     int major, minor, bugfix;
     base::SysInfo::OperatingSystemVersionNumbers(&major, &minor, &bugfix);
     return major;
   }
 }

 static void GetNativeThemeExtraParams(
     WebThemeEngine::Part part,
     WebThemeEngine::State state,
     const WebThemeEngine::ExtraParams* extra_params,
     ui::NativeTheme::ExtraParams* native_theme_extra_params) {
   switch (part) {
     case WebThemeEngine::kPartScrollbarHorizontalTrack:
     case WebThemeEngine::kPartScrollbarVerticalTrack:
       // Android doesn't draw scrollbars.
       NOTREACHED();
       break;
     case WebThemeEngine::kPartCheckbox:
       native_theme_extra_params->button.checked = extra_params->button.checked;
       native_theme_extra_params->button.indeterminate =
           extra_params->button.indeterminate;
       native_theme_extra_params->button.zoom = extra_params->button.zoom;
       break;
     case WebThemeEngine::kPartRadio:
       native_theme_extra_params->button.checked = extra_params->button.checked;
       break;
     case WebThemeEngine::kPartButton:
       native_theme_extra_params->button.has_border =
           extra_params->button.has_border;
       // Native buttons have a different focus style.
       native_theme_extra_params->button.is_focused = false;
       native_theme_extra_params->button.background_color =
           extra_params->button.background_color;
       break;
     case WebThemeEngine::kPartTextField:
       native_theme_extra_params->text_field.is_text_area =
           extra_params->text_field.is_text_area;
       native_theme_extra_params->text_field.is_listbox =
           extra_params->text_field.is_listbox;
       native_theme_extra_params->text_field.background_color =
           extra_params->text_field.background_color;
       break;
     case WebThemeEngine::kPartMenuList:
       native_theme_extra_params->menu_list.has_border =
           extra_params->menu_list.has_border;
       native_theme_extra_params->menu_list.has_border_radius =
           extra_params->menu_list.has_border_radius;
       native_theme_extra_params->menu_list.arrow_x =
           extra_params->menu_list.arrow_x;
       native_theme_extra_params->menu_list.arrow_y =
           extra_params->menu_list.arrow_y;
       native_theme_extra_params->menu_list.arrow_size =
           extra_params->menu_list.arrow_size;
       native_theme_extra_params->menu_list.arrow_color =
           extra_params->menu_list.arrow_color;
       native_theme_extra_params->menu_list.background_color =
           extra_params->menu_list.background_color;
       break;
     case WebThemeEngine::kPartSliderTrack:
       native_theme_extra_params->slider.thumb_x = extra_params->slider.thumb_x;
       native_theme_extra_params->slider.thumb_y = extra_params->slider.thumb_y;
       native_theme_extra_params->slider.zoom = extra_params->slider.zoom;
       FALLTHROUGH;
     case WebThemeEngine::kPartSliderThumb:
       native_theme_extra_params->slider.vertical =
           extra_params->slider.vertical;
       native_theme_extra_params->slider.in_drag = extra_params->slider.in_drag;
       break;
     case WebThemeEngine::kPartInnerSpinButton:
       native_theme_extra_params->inner_spin.spin_up =
           extra_params->inner_spin.spin_up;
       native_theme_extra_params->inner_spin.read_only =
           extra_params->inner_spin.read_only;
       break;
     case WebThemeEngine::kPartProgressBar:
       native_theme_extra_params->progress_bar.determinate =
           extra_params->progress_bar.determinate;
       native_theme_extra_params->progress_bar.value_rect_x =
           extra_params->progress_bar.value_rect_x;
       native_theme_extra_params->progress_bar.value_rect_y =
           extra_params->progress_bar.value_rect_y;
       native_theme_extra_params->progress_bar.value_rect_width =
           extra_params->progress_bar.value_rect_width;
       native_theme_extra_params->progress_bar.value_rect_height =
           extra_params->progress_bar.value_rect_height;
       break;
     default:
       break;  // Parts that have no extra params get here.
   }
 }

 WebThemeEngineAndroid::~WebThemeEngineAndroid() = default;

 blink::WebSize WebThemeEngineAndroid::GetSize(WebThemeEngine::Part part) {
   switch (part) {
     case WebThemeEngine::kPartScrollbarHorizontalThumb:
     case WebThemeEngine::kPartScrollbarVerticalThumb: {
       // Minimum length for scrollbar thumb is the scrollbar thickness.
       ScrollbarStyle style;
       GetOverlayScrollbarStyle(&style);
       int scrollbarThickness = style.thumb_thickness + style.scrollbar_margin;
       return gfx::Size(scrollbarThickness, scrollbarThickness);
     }
     default: {
       ui::NativeTheme::ExtraParams extra;
       return ui::NativeTheme::GetInstanceForWeb()->GetPartSize(
           NativeThemePart(part), ui::NativeTheme::kNormal, extra);
     }
   }
 }

 void WebThemeEngineAndroid::GetOverlayScrollbarStyle(ScrollbarStyle* style) {
   // TODO(bokan): Android scrollbars on non-composited scrollers don't
   // currently fade out so the fadeOutDuration and Delay  Now that this has
   // been added into Blink for other platforms we should plumb that through for
   // Android as well.
   style->fade_out_delay = base::TimeDelta();
   style->fade_out_duration = base::TimeDelta();
   if (getMajorVersion() >= kVersionLollipop) {
     style->thumb_thickness = 4;
     style->scrollbar_margin = 0;
     style->color = SkColorSetARGB(128, 64, 64, 64);
   } else {
     style->thumb_thickness = 3;
     style->scrollbar_margin = 3;
     style->color = SkColorSetARGB(128, 128, 128, 128);
   }
 }

 void WebThemeEngineAndroid::Paint(
     cc::PaintCanvas* canvas,
     WebThemeEngine::Part part,
     WebThemeEngine::State state,
     const blink::WebRect& rect,
     const WebThemeEngine::ExtraParams* extra_params,
     blink::WebColorScheme color_scheme) {
   ui::NativeTheme::ExtraParams native_theme_extra_params;
   GetNativeThemeExtraParams(
       part, state, extra_params, &native_theme_extra_params);
   ui::NativeTheme::GetInstanceForWeb()->Paint(
       canvas, NativeThemePart(part), NativeThemeState(state), gfx::Rect(rect),
       native_theme_extra_params, NativeColorScheme(color_scheme));
 }

 blink::ForcedColors WebThemeEngineAndroid::GetForcedColors() const {
   return ui::NativeTheme::GetInstanceForWeb()->UsesHighContrastColors()
              ? blink::ForcedColors::kActive
              : blink::ForcedColors::kNone;
 }

 void WebThemeEngineAndroid::SetForcedColors(
     const blink::ForcedColors forced_colors) {
   ui::NativeTheme::GetInstanceForWeb()->set_high_contrast(
       forced_colors == blink::ForcedColors::kActive);
 }

 blink::PreferredColorScheme WebThemeEngineAndroid::PreferredColorScheme()
     const {
   ui::NativeTheme::PreferredColorScheme preferred_color_scheme =
       ui::NativeTheme::GetInstanceForWeb()->GetPreferredColorScheme();
   return WebPreferredColorScheme(preferred_color_scheme);
 }

 void WebThemeEngineAndroid::SetPreferredColorScheme(
     const blink::PreferredColorScheme preferred_color_scheme) {
   ui::NativeTheme::GetInstanceForWeb()->set_preferred_color_scheme(
       NativePreferredColorScheme(preferred_color_scheme));
 }
 }  // namespace content
	// Copyright 2014 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.

	#include "content/child/webthemeengine_impl_android.h"

	#include "base/logging.h"
	#include "base/system/sys_info.h"
	#include "content/child/webthemeengine_impl_conversions.h"
	#include "skia/ext/platform_canvas.h"
	#include "third_party/blink/public/platform/web_rect.h"
	#include "third_party/blink/public/platform/web_size.h"
	#include "ui/native_theme/native_theme.h"

	using blink::WebColorScheme;
	using blink::WebRect;
	using blink::WebThemeEngine;

	namespace content {

	namespace {
	const int kVersionLollipop = 5;

	int getMajorVersion() {
	int major, minor, bugfix;
	base::SysInfo::OperatingSystemVersionNumbers(&major, &minor, &bugfix);
	return major;
	}
	}

	static void GetNativeThemeExtraParams(
	WebThemeEngine::Part part,
	WebThemeEngine::State state,
	const WebThemeEngine::ExtraParams* extra_params,
	ui::NativeTheme::ExtraParams* native_theme_extra_params) {
	switch (part) {
	case WebThemeEngine::kPartScrollbarHorizontalTrack:
	case WebThemeEngine::kPartScrollbarVerticalTrack:
	// Android doesn't draw scrollbars.
	NOTREACHED();
	break;
	case WebThemeEngine::kPartCheckbox:
	native_theme_extra_params->button.checked = extra_params->button.checked;
	native_theme_extra_params->button.indeterminate =
	extra_params->button.indeterminate;
	native_theme_extra_params->button.zoom = extra_params->button.zoom;
	break;
	case WebThemeEngine::kPartRadio:
	native_theme_extra_params->button.checked = extra_params->button.checked;
	break;
	case WebThemeEngine::kPartButton:
	native_theme_extra_params->button.has_border =
	extra_params->button.has_border;
	// Native buttons have a different focus style.
	native_theme_extra_params->button.is_focused = false;
	native_theme_extra_params->button.background_color =
	extra_params->button.background_color;
	break;
	case WebThemeEngine::kPartTextField:
	native_theme_extra_params->text_field.is_text_area =
	extra_params->text_field.is_text_area;
	native_theme_extra_params->text_field.is_listbox =
	extra_params->text_field.is_listbox;
	native_theme_extra_params->text_field.background_color =
	extra_params->text_field.background_color;
	break;
	case WebThemeEngine::kPartMenuList:
	native_theme_extra_params->menu_list.has_border =
	extra_params->menu_list.has_border;
	native_theme_extra_params->menu_list.has_border_radius =
	extra_params->menu_list.has_border_radius;
	native_theme_extra_params->menu_list.arrow_x =
	extra_params->menu_list.arrow_x;
	native_theme_extra_params->menu_list.arrow_y =
	extra_params->menu_list.arrow_y;
	native_theme_extra_params->menu_list.arrow_size =
	extra_params->menu_list.arrow_size;
	native_theme_extra_params->menu_list.arrow_color =
	extra_params->menu_list.arrow_color;
	native_theme_extra_params->menu_list.background_color =
	extra_params->menu_list.background_color;
	break;
	case WebThemeEngine::kPartSliderTrack:
	native_theme_extra_params->slider.thumb_x = extra_params->slider.thumb_x;
	native_theme_extra_params->slider.thumb_y = extra_params->slider.thumb_y;
	native_theme_extra_params->slider.zoom = extra_params->slider.zoom;
	FALLTHROUGH;
	case WebThemeEngine::kPartSliderThumb:
	native_theme_extra_params->slider.vertical =
	extra_params->slider.vertical;
	native_theme_extra_params->slider.in_drag = extra_params->slider.in_drag;
	break;
	case WebThemeEngine::kPartInnerSpinButton:
	native_theme_extra_params->inner_spin.spin_up =
	extra_params->inner_spin.spin_up;
	native_theme_extra_params->inner_spin.read_only =
	extra_params->inner_spin.read_only;
	break;
	case WebThemeEngine::kPartProgressBar:
	native_theme_extra_params->progress_bar.determinate =
	extra_params->progress_bar.determinate;
	native_theme_extra_params->progress_bar.value_rect_x =
	extra_params->progress_bar.value_rect_x;
	native_theme_extra_params->progress_bar.value_rect_y =
	extra_params->progress_bar.value_rect_y;
	native_theme_extra_params->progress_bar.value_rect_width =
	extra_params->progress_bar.value_rect_width;
	native_theme_extra_params->progress_bar.value_rect_height =
	extra_params->progress_bar.value_rect_height;
	break;
	default:
	break; // Parts that have no extra params get here.
	}
	}

	WebThemeEngineAndroid::~WebThemeEngineAndroid() = default;

	blink::WebSize WebThemeEngineAndroid::GetSize(WebThemeEngine::Part part) {
	switch (part) {
	case WebThemeEngine::kPartScrollbarHorizontalThumb:
	case WebThemeEngine::kPartScrollbarVerticalThumb: {
	// Minimum length for scrollbar thumb is the scrollbar thickness.
	ScrollbarStyle style;
	GetOverlayScrollbarStyle(&style);
	int scrollbarThickness = style.thumb_thickness + style.scrollbar_margin;
	return gfx::Size(scrollbarThickness, scrollbarThickness);
	}
	default: {
	ui::NativeTheme::ExtraParams extra;
	return ui::NativeTheme::GetInstanceForWeb()->GetPartSize(
	NativeThemePart(part), ui::NativeTheme::kNormal, extra);
	}
	}
	}

	void WebThemeEngineAndroid::GetOverlayScrollbarStyle(ScrollbarStyle* style) {
	// TODO(bokan): Android scrollbars on non-composited scrollers don't
	// currently fade out so the fadeOutDuration and Delay Now that this has
	// been added into Blink for other platforms we should plumb that through for
	// Android as well.
	style->fade_out_delay = base::TimeDelta();
	style->fade_out_duration = base::TimeDelta();
	if (getMajorVersion() >= kVersionLollipop) {
	style->thumb_thickness = 4;
	style->scrollbar_margin = 0;
	style->color = SkColorSetARGB(128, 64, 64, 64);
	} else {
	style->thumb_thickness = 3;
	style->scrollbar_margin = 3;
	style->color = SkColorSetARGB(128, 128, 128, 128);
	}
	}

	void WebThemeEngineAndroid::Paint(
	cc::PaintCanvas* canvas,
	WebThemeEngine::Part part,
	WebThemeEngine::State state,
	const blink::WebRect& rect,
	const WebThemeEngine::ExtraParams* extra_params,
	blink::WebColorScheme color_scheme) {
	ui::NativeTheme::ExtraParams native_theme_extra_params;
	GetNativeThemeExtraParams(
	part, state, extra_params, &native_theme_extra_params);
	ui::NativeTheme::GetInstanceForWeb()->Paint(
	canvas, NativeThemePart(part), NativeThemeState(state), gfx::Rect(rect),
	native_theme_extra_params, NativeColorScheme(color_scheme));
	}

	blink::ForcedColors WebThemeEngineAndroid::GetForcedColors() const {
	return ui::NativeTheme::GetInstanceForWeb()->UsesHighContrastColors()
	? blink::ForcedColors::kActive
	: blink::ForcedColors::kNone;
	}

	void WebThemeEngineAndroid::SetForcedColors(
	const blink::ForcedColors forced_colors) {
	ui::NativeTheme::GetInstanceForWeb()->set_high_contrast(
	forced_colors == blink::ForcedColors::kActive);
	}

	blink::PreferredColorScheme WebThemeEngineAndroid::PreferredColorScheme()
	const {
	ui::NativeTheme::PreferredColorScheme preferred_color_scheme =
	ui::NativeTheme::GetInstanceForWeb()->GetPreferredColorScheme();
	return WebPreferredColorScheme(preferred_color_scheme);
	}

	void WebThemeEngineAndroid::SetPreferredColorScheme(
	const blink::PreferredColorScheme preferred_color_scheme) {
	ui::NativeTheme::GetInstanceForWeb()->set_preferred_color_scheme(
	NativePreferredColorScheme(preferred_color_scheme));
	}
	} // namespace content