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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_default.h"
#include "build/build_config.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"
#include "ui/native_theme/overlay_scrollbar_constants_aura.h"
using blink::WebColorScheme;
using blink::WebRect;
using blink::WebScrollbarOverlayColorTheme;
using blink::WebThemeEngine;
namespace content {
namespace {
#if defined(OS_WIN)
// The width of a vertical scroll bar in dips.
int32_t g_vertical_scroll_bar_width;
// The height of a horizontal scroll bar in dips.
int32_t g_horizontal_scroll_bar_height;
// The height of the arrow bitmap on a vertical scroll bar in dips.
int32_t g_vertical_arrow_bitmap_height;
// The width of the arrow bitmap on a horizontal scroll bar in dips.
int32_t g_horizontal_arrow_bitmap_width;
#endif
} // namespace
// TODO(https://crbug.com/988434): The mapping functions below are duplicated
// inside Blink and in the Android implementation of WebThemeEngine. They should
// be implemented in one place where dependencies between Blink and
// ui::NativeTheme make sense.
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::ScrollbarOverlayColorTheme
NativeThemeScrollbarOverlayColorTheme(WebScrollbarOverlayColorTheme theme) {
switch (theme) {
case WebScrollbarOverlayColorTheme::kWebScrollbarOverlayColorThemeLight:
return ui::NativeTheme::ScrollbarOverlayColorThemeLight;
case WebScrollbarOverlayColorTheme::kWebScrollbarOverlayColorThemeDark:
return ui::NativeTheme::ScrollbarOverlayColorThemeDark;
default:
return ui::NativeTheme::ScrollbarOverlayColorThemeDark;
}
}
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 ui::NativeTheme::ColorScheme NativeColorScheme(
WebColorScheme color_scheme) {
switch (color_scheme) {
case WebColorScheme::kLight:
return ui::NativeTheme::ColorScheme::kLight;
case WebColorScheme::kDark:
return ui::NativeTheme::ColorScheme::kDark;
}
}
static void GetNativeThemeExtraParams(
WebThemeEngine::Part part,
WebThemeEngine::State state,
const WebThemeEngine::ExtraParams* extra_params,
ui::NativeTheme::ExtraParams* native_theme_extra_params) {
if (!extra_params)
return;
switch (part) {
case WebThemeEngine::kPartScrollbarHorizontalTrack:
case WebThemeEngine::kPartScrollbarVerticalTrack:
native_theme_extra_params->scrollbar_track.track_x =
extra_params->scrollbar_track.track_x;
native_theme_extra_params->scrollbar_track.track_y =
extra_params->scrollbar_track.track_y;
native_theme_extra_params->scrollbar_track.track_width =
extra_params->scrollbar_track.track_width;
native_theme_extra_params->scrollbar_track.track_height =
extra_params->scrollbar_track.track_height;
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.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;
FALLTHROUGH;
// vertical and in_drag properties are used by both slider track and
// slider thumb.
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;
case WebThemeEngine::kPartScrollbarHorizontalThumb:
case WebThemeEngine::kPartScrollbarVerticalThumb:
native_theme_extra_params->scrollbar_thumb.scrollbar_theme =
NativeThemeScrollbarOverlayColorTheme(
extra_params->scrollbar_thumb.scrollbar_theme);
break;
case WebThemeEngine::kPartScrollbarDownArrow:
case WebThemeEngine::kPartScrollbarLeftArrow:
case WebThemeEngine::kPartScrollbarRightArrow:
case WebThemeEngine::kPartScrollbarUpArrow:
native_theme_extra_params->scrollbar_arrow.zoom =
extra_params->scrollbar_button.zoom;
native_theme_extra_params->scrollbar_arrow.right_to_left =
extra_params->scrollbar_button.right_to_left;
break;
default:
break; // Parts that have no extra params get here.
}
}
WebThemeEngineDefault::~WebThemeEngineDefault() = default;
blink::WebSize WebThemeEngineDefault::GetSize(WebThemeEngine::Part part) {
ui::NativeTheme::ExtraParams extra;
ui::NativeTheme::Part native_theme_part = NativeThemePart(part);
#if defined(OS_WIN)
switch (native_theme_part) {
case ui::NativeTheme::kScrollbarDownArrow:
case ui::NativeTheme::kScrollbarLeftArrow:
case ui::NativeTheme::kScrollbarRightArrow:
case ui::NativeTheme::kScrollbarUpArrow:
case ui::NativeTheme::kScrollbarHorizontalThumb:
case ui::NativeTheme::kScrollbarVerticalThumb:
case ui::NativeTheme::kScrollbarHorizontalTrack:
case ui::NativeTheme::kScrollbarVerticalTrack: {
return gfx::Size(g_vertical_scroll_bar_width,
g_vertical_scroll_bar_width);
}
default:
break;
}
#endif
return ui::NativeTheme::GetInstanceForWeb()->GetPartSize(
native_theme_part, ui::NativeTheme::kNormal, extra);
}
void WebThemeEngineDefault::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));
}
void WebThemeEngineDefault::GetOverlayScrollbarStyle(ScrollbarStyle* style) {
style->fade_out_delay = ui::kOverlayScrollbarFadeDelay;
style->fade_out_duration = ui::kOverlayScrollbarFadeDuration;
// The other fields in this struct are used only on Android to draw solid
// color scrollbars. On other platforms the scrollbars are painted in
// NativeTheme so these fields are unused.
}
bool WebThemeEngineDefault::SupportsNinePatch(Part part) const {
return ui::NativeTheme::GetInstanceForWeb()->SupportsNinePatch(
NativeThemePart(part));
}
blink::WebSize WebThemeEngineDefault::NinePatchCanvasSize(Part part) const {
return ui::NativeTheme::GetInstanceForWeb()->GetNinePatchCanvasSize(
NativeThemePart(part));
}
blink::WebRect WebThemeEngineDefault::NinePatchAperture(Part part) const {
return ui::NativeTheme::GetInstanceForWeb()->GetNinePatchAperture(
NativeThemePart(part));
}
#if defined(OS_WIN)
// static
void WebThemeEngineDefault::cacheScrollBarMetrics(
int32_t vertical_scroll_bar_width,
int32_t horizontal_scroll_bar_height,
int32_t vertical_arrow_bitmap_height,
int32_t horizontal_arrow_bitmap_width) {
g_vertical_scroll_bar_width = vertical_scroll_bar_width;
g_horizontal_scroll_bar_height = horizontal_scroll_bar_height;
g_vertical_arrow_bitmap_height = vertical_arrow_bitmap_height;
g_horizontal_arrow_bitmap_width = horizontal_arrow_bitmap_width;
}
#endif
} // namespace content
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