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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/logging.h"
#include "base/sys_info.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::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 ui::NativeTheme::Part NativeThemePart(WebThemeEngine::Part part) {
switch (part) {
case WebThemeEngine::kPartScrollbarDownArrow:
return ui::NativeTheme::kScrollbarDownArrow;
case WebThemeEngine::kPartScrollbarLeftArrow:
return ui::NativeTheme::kScrollbarLeftArrow;
case WebThemeEngine::kPartScrollbarRightArrow:
return ui::NativeTheme::kScrollbarRightArrow;
case WebThemeEngine::kPartScrollbarUpArrow:
return ui::NativeTheme::kScrollbarUpArrow;
case WebThemeEngine::kPartScrollbarHorizontalThumb:
return ui::NativeTheme::kScrollbarHorizontalThumb;
case WebThemeEngine::kPartScrollbarVerticalThumb:
return ui::NativeTheme::kScrollbarVerticalThumb;
case WebThemeEngine::kPartScrollbarHorizontalTrack:
return ui::NativeTheme::kScrollbarHorizontalTrack;
case WebThemeEngine::kPartScrollbarVerticalTrack:
return ui::NativeTheme::kScrollbarVerticalTrack;
case WebThemeEngine::kPartScrollbarCorner:
return ui::NativeTheme::kScrollbarCorner;
case WebThemeEngine::kPartCheckbox:
return ui::NativeTheme::kCheckbox;
case WebThemeEngine::kPartRadio:
return ui::NativeTheme::kRadio;
case WebThemeEngine::kPartButton:
return ui::NativeTheme::kPushButton;
case WebThemeEngine::kPartTextField:
return ui::NativeTheme::kTextField;
case WebThemeEngine::kPartMenuList:
return ui::NativeTheme::kMenuList;
case WebThemeEngine::kPartSliderTrack:
return ui::NativeTheme::kSliderTrack;
case WebThemeEngine::kPartSliderThumb:
return ui::NativeTheme::kSliderThumb;
case WebThemeEngine::kPartInnerSpinButton:
return ui::NativeTheme::kInnerSpinButton;
case WebThemeEngine::kPartProgressBar:
return ui::NativeTheme::kProgressBar;
default:
return ui::NativeTheme::kScrollbarDownArrow;
}
}
static ui::NativeTheme::State NativeThemeState(WebThemeEngine::State state) {
switch (state) {
case WebThemeEngine::kStateDisabled:
return ui::NativeTheme::kDisabled;
case WebThemeEngine::kStateHover:
return ui::NativeTheme::kHovered;
case WebThemeEngine::kStateNormal:
return ui::NativeTheme::kNormal;
case WebThemeEngine::kStatePressed:
return ui::NativeTheme::kPressed;
default:
return ui::NativeTheme::kDisabled;
}
}
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;
break;
case WebThemeEngine::kPartRadio:
native_theme_extra_params->button.checked = extra_params->button.checked;
break;
case WebThemeEngine::kPartButton:
native_theme_extra_params->button.is_default =
extra_params->button.is_default;
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:
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.
}
}
blink::WebSize WebThemeEngineImpl::GetSize(WebThemeEngine::Part part) {
switch (part) {
case ui::NativeTheme::kScrollbarHorizontalThumb:
case ui::NativeTheme::kScrollbarVerticalThumb: {
// 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 WebThemeEngineImpl::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 WebThemeEngineImpl::Paint(
cc::PaintCanvas* canvas,
WebThemeEngine::Part part,
WebThemeEngine::State state,
const blink::WebRect& rect,
const WebThemeEngine::ExtraParams* extra_params) {
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);
}
} // namespace content
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