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webthemeengine_impl_android.cc
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webthemeengine_impl_android.cc
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// 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/notreached.h"
#include "base/system/sys_info.h"
#include "content/child/webthemeengine_impl_conversions.h"
#include "skia/ext/platform_canvas.h"
#include "ui/native_theme/native_theme.h"
using blink::ColorScheme;
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;
native_theme_extra_params->slider.right_to_left =
extra_params->slider.right_to_left;
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;
gfx::Size 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 gfx::Rect& rect,
const WebThemeEngine::ExtraParams* extra_params,
blink::ColorScheme 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), 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);
}
} // namespace content