/* * This file is part of the theme implementation for form controls in WebCore. * * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Computer, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_THEME_H_ #define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_THEME_H_ #include "base/time/time.h" #include "third_party/blink/public/mojom/frame/color_scheme.mojom-blink-forward.h" #include "third_party/blink/renderer/core/core_export.h" #include "third_party/blink/renderer/core/css_value_keywords.h" #include "third_party/blink/renderer/core/html/forms/input_type.h" #include "third_party/blink/renderer/platform/graphics/color.h" #include "third_party/blink/renderer/platform/theme_types.h" #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" #include "third_party/blink/renderer/platform/wtf/forward.h" #include "third_party/blink/renderer/platform/wtf/ref_counted.h" #include "ui/gfx/geometry/size.h" namespace ui { class ColorProvider; } namespace blink { class ComputedStyle; class ComputedStyleBuilder; class Element; class File; class LocalFrame; class Node; class ThemePainter; class CORE_EXPORT LayoutTheme : public RefCounted { USING_FAST_MALLOC(LayoutTheme); protected: LayoutTheme() = default; public: virtual ~LayoutTheme() = default; static LayoutTheme& GetTheme(); virtual ThemePainter& Painter() = 0; // This method is called whenever style has been computed for an element and // the appearance property has been set to a value other than "none". // The theme should map in all of the appropriate metrics and defaults given // the contents of the style. This includes sophisticated operations like // selection of control size based off the font, the disabling of appearance // when certain other properties like "border" are set, or if the appearance // is not supported by the theme. void AdjustStyle(const Element&, ComputedStyleBuilder&); // The remaining methods should be implemented by the platform-specific // portion of the theme, e.g., layout_theme_mac.mm for macOS. // These methods return the theme's extra style sheets rules, to let each // platform adjust the default CSS rules in html.css or quirks.css virtual String ExtraDefaultStyleSheet(); virtual String ExtraFullscreenStyleSheet(); // Whether or not the control has been styled enough by the author to disable // the native appearance. virtual bool IsControlStyled(AppearanceValue appearance, const ComputedStyleBuilder&) const; bool ShouldDrawDefaultFocusRing(const Node*, const ComputedStyle&) const; // A method asking if the platform is able to show a calendar picker for a // given input type. virtual bool SupportsCalendarPicker(InputType::Type) const; // Text selection colors. Color ActiveSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; Color InactiveSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; Color ActiveSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; Color InactiveSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; virtual void SetSelectionColors(Color active_background_color, Color active_foreground_color, Color inactive_background_color, Color inactive_foreground_color); // List box selection colors Color ActiveListBoxSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; Color ActiveListBoxSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; Color InactiveListBoxSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; Color InactiveListBoxSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformSpellingMarkerUnderlineColor() const; virtual Color PlatformGrammarMarkerUnderlineColor() const; Color PlatformActiveSpellingMarkerHighlightColor() const; // Highlight and text colors for TextMatches. Color PlatformTextSearchHighlightColor( bool active_match, bool in_forced_colors, mojom::blink::ColorScheme color_scheme, const ui::ColorProvider* color_provider, bool can_expose_accent_color) const; Color PlatformTextSearchColor(bool active_match, bool in_forced_colors, mojom::blink::ColorScheme color_scheme, const ui::ColorProvider* color_provider, bool can_expose_accent_color) const; virtual Color FocusRingColor(mojom::blink::ColorScheme color_scheme) const; void SetCustomFocusRingColor(const Color&); virtual Color TapHighlightColor() const { return kDefaultTapHighlightColor; } static Color PlatformDefaultCompositionBackgroundColor() { return kDefaultCompositionBackgroundColor; } void PlatformColorsDidChange(); virtual void ColorSchemeDidChange(); void SetCaretBlinkInterval(base::TimeDelta); virtual base::TimeDelta CaretBlinkInterval() const; // System colors for CSS. virtual Color SystemColor(CSSValueID, mojom::blink::ColorScheme color_scheme, const ui::ColorProvider* color_provider, bool can_expose_accent_color) const; void AdjustSliderThumbSize(ComputedStyleBuilder&) const; virtual int PopupInternalPaddingStart(const ComputedStyle&) const { return 0; } virtual int PopupInternalPaddingEnd(LocalFrame*, const ComputedStyle&) const { return 0; } virtual int PopupInternalPaddingTop(const ComputedStyle&) const { return 0; } virtual int PopupInternalPaddingBottom(const ComputedStyle&) const { return 0; } virtual bool PopsMenuByArrowKeys() const { return false; } virtual bool PopsMenuByReturnKey() const { return true; } virtual String DisplayNameForFile(const File& file) const; virtual bool SupportsSelectionForegroundColors() const { return true; } virtual bool IsAccentColorCustomized( mojom::blink::ColorScheme color_scheme) const; // GetSystemAccentColor returns transparent unless there is a special value // from the OS color scheme. virtual Color GetSystemAccentColor( mojom::blink::ColorScheme color_scheme) const; // GetAccentColorOrDefault will return GetAccentColor if there is a value from // the OS and if it is within an installed WebApp scope, otherwise it will // return the default accent color. Color GetAccentColorOrDefault(mojom::blink::ColorScheme color_scheme, bool can_expose_accent_color) const; // GetAccentColorText returns black or white depending on which can be // rendered with enough contrast on the result of GetAccentColorOrDefault. Color GetAccentColorText(mojom::blink::ColorScheme color_scheme, bool can_expose_accent_color) const; virtual Color SystemHighlightFromColorProvider( mojom::blink::ColorScheme color_scheme, const ui::ColorProvider* color_provider) const; protected: static Color active_selection_background_color_; static Color active_selection_foreground_color_; static Color inactive_selection_background_color_; static Color inactive_selection_foreground_color_; static Color active_list_box_selection_background_color_dark_mode_; static Color active_list_box_selection_foreground_color_dark_mode_; static Color inactive_list_box_selection_background_color_dark_mode_; static Color inactive_list_box_selection_foreground_color_dark_mode_; // The platform selection color. virtual Color PlatformActiveSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformInactiveSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformActiveSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformInactiveSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformActiveListBoxSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformInactiveListBoxSelectionBackgroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformActiveListBoxSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; virtual Color PlatformInactiveListBoxSelectionForegroundColor( mojom::blink::ColorScheme color_scheme) const; // Methods for each appearance value. void AdjustCheckboxStyle(ComputedStyleBuilder&) const; void AdjustRadioStyle(ComputedStyleBuilder&) const; void AdjustPushButtonStyle(ComputedStyleBuilder&) const; virtual void AdjustInnerSpinButtonStyle(ComputedStyleBuilder&) const; void AdjustMenuListStyle(ComputedStyleBuilder&) const; void AdjustSliderThumbStyle(ComputedStyleBuilder&) const; virtual void AdjustSearchFieldCancelButtonStyle(ComputedStyleBuilder&) const; std::optional CustomFocusRingColor() const { return custom_focus_ring_color_; } Color DefaultSystemColor(CSSValueID, mojom::blink::ColorScheme color_scheme, const ui::ColorProvider* color_provider, bool can_expose_accent_color) const; Color SystemColorFromColorProvider(CSSValueID, mojom::blink::ColorScheme color_scheme, const ui::ColorProvider* color_provider, bool can_expose_accent_color) const; private: // This function is to be implemented in your platform-specific theme // implementation to hand back the appropriate platform theme. static LayoutTheme& NativeTheme(); AppearanceValue AdjustAppearanceWithAuthorStyle( AppearanceValue appearance, const ComputedStyleBuilder& style); AppearanceValue AdjustAppearanceWithElementType(AppearanceValue appearance, const Element&); void UpdateForcedColorsState(); std::optional custom_focus_ring_color_; base::TimeDelta caret_blink_interval_ = base::Milliseconds(500); // This color is expected to be drawn on a semi-transparent overlay, // making it more transparent than its alpha value indicates. static constexpr Color kDefaultTapHighlightColor = Color::FromRGBA32(0x2e000000); // 18% black. static constexpr Color kDefaultCompositionBackgroundColor = Color::FromRGBA32(0xFFFFDD55); }; } // namespace blink #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_THEME_H_