| /* |
| * 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 "third_party/blink/public/platform/web_color_scheme.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/scroll/scroll_types.h" |
| #include "third_party/blink/renderer/platform/fonts/font_description.h" |
| #include "third_party/blink/renderer/platform/fonts/font_selection_types.h" |
| #include "third_party/blink/renderer/platform/geometry/int_rect.h" |
| #include "third_party/blink/renderer/platform/geometry/layout_unit.h" |
| #include "third_party/blink/renderer/platform/geometry/length_box.h" |
| #include "third_party/blink/renderer/platform/geometry/length_size.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" |
| |
| namespace blink { |
| |
| class ComputedStyle; |
| class Element; |
| class File; |
| class FontDescription; |
| class LocalFrame; |
| class Node; |
| class ThemePainter; |
| |
| class CORE_EXPORT LayoutTheme : public RefCounted<LayoutTheme> { |
| USING_FAST_MALLOC(LayoutTheme); |
| |
| protected: |
| LayoutTheme(); |
| |
| 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(ComputedStyle&, Element*); |
| |
| // The remaining methods should be implemented by the platform-specific |
| // portion of the theme, e.g., LayoutThemeMac.cpp for Mac OS X. |
| |
| // 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 ExtraQuirksStyleSheet(); |
| virtual String ExtraFullscreenStyleSheet(); |
| |
| // Whether or not the control has been styled enough by the author to disable |
| // the native appearance. |
| virtual bool IsControlStyled(ControlPart part, const ComputedStyle&) const; |
| |
| // This method is called whenever a control state changes on a particular |
| // themed object, e.g., the mouse becomes pressed or a control becomes |
| // disabled. The ControlState parameter indicates which state has changed |
| // (from having to not having, or vice versa). |
| bool ControlStateChanged(const Node*, |
| const ComputedStyle&, |
| ControlState) 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(const AtomicString&) const; |
| |
| // Text selection colors. |
| Color ActiveSelectionBackgroundColor(WebColorScheme color_scheme) const; |
| Color InactiveSelectionBackgroundColor(WebColorScheme color_scheme) const; |
| Color ActiveSelectionForegroundColor(WebColorScheme color_scheme) const; |
| Color InactiveSelectionForegroundColor(WebColorScheme 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( |
| WebColorScheme color_scheme) const; |
| Color ActiveListBoxSelectionForegroundColor( |
| WebColorScheme color_scheme) const; |
| Color InactiveListBoxSelectionBackgroundColor( |
| WebColorScheme color_scheme) const; |
| Color InactiveListBoxSelectionForegroundColor( |
| WebColorScheme 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_mode, |
| WebColorScheme color_scheme) const; |
| Color PlatformTextSearchColor(bool active_match, |
| bool in_forced_colors_mode, |
| WebColorScheme color_scheme) const; |
| |
| virtual Color FocusRingColor() const; |
| virtual Color PlatformFocusRingColor() const { return Color(0, 0, 0); } |
| void SetCustomFocusRingColor(const Color&); |
| static Color TapHighlightColor(); |
| |
| virtual Color PlatformTapHighlightColor() const { |
| return LayoutTheme::kDefaultTapHighlightColor; |
| } |
| virtual Color PlatformDefaultCompositionBackgroundColor() const { |
| return kDefaultCompositionBackgroundColor; |
| } |
| void PlatformColorsDidChange(); |
| virtual void ColorSchemeDidChange(); |
| |
| void SetCaretBlinkInterval(base::TimeDelta); |
| virtual base::TimeDelta CaretBlinkInterval() const; |
| |
| // System fonts and colors for CSS. |
| void SystemFont(CSSValueID system_font_id, FontDescription&); |
| virtual Color SystemColor(CSSValueID, WebColorScheme color_scheme) const; |
| |
| virtual void AdjustSliderThumbSize(ComputedStyle&) 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; |
| } |
| |
| // Returns size of one slider tick mark for a horizontal track. |
| // For vertical tracks we rotate it and use it. i.e. Width is always length |
| // along the track. |
| virtual IntSize SliderTickSize() const = 0; |
| // Returns the distance of slider tick origin from the slider track center. |
| virtual int SliderTickOffsetFromTrackCenter() const = 0; |
| |
| // Functions for <select> elements. |
| virtual bool DelegatesMenuListRendering() const; |
| // This function has no effect for LayoutThemeAndroid, of which |
| // DelegatesMenuListRendering() always returns true. |
| void SetDelegatesMenuListRenderingForTesting(bool flag); |
| 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; } |
| |
| // Adjust style as per platform selection. |
| virtual void AdjustControlPartStyle(ComputedStyle&); |
| |
| protected: |
| // The platform selection color. |
| virtual Color PlatformActiveSelectionBackgroundColor( |
| WebColorScheme color_scheme) const; |
| virtual Color PlatformInactiveSelectionBackgroundColor( |
| WebColorScheme color_scheme) const; |
| virtual Color PlatformActiveSelectionForegroundColor( |
| WebColorScheme color_scheme) const; |
| virtual Color PlatformInactiveSelectionForegroundColor( |
| WebColorScheme color_scheme) const; |
| |
| virtual Color PlatformActiveListBoxSelectionBackgroundColor( |
| WebColorScheme color_scheme) const; |
| virtual Color PlatformInactiveListBoxSelectionBackgroundColor( |
| WebColorScheme color_scheme) const; |
| virtual Color PlatformActiveListBoxSelectionForegroundColor( |
| WebColorScheme color_scheme) const; |
| virtual Color PlatformInactiveListBoxSelectionForegroundColor( |
| WebColorScheme color_scheme) const; |
| |
| // Methods for each appearance value. |
| virtual void AdjustCheckboxStyle(ComputedStyle&) const; |
| virtual void SetCheckboxSize(ComputedStyle&) const {} |
| |
| virtual void AdjustRadioStyle(ComputedStyle&) const; |
| virtual void SetRadioSize(ComputedStyle&) const {} |
| |
| virtual void AdjustButtonStyle(ComputedStyle&) const; |
| virtual void AdjustInnerSpinButtonStyle(ComputedStyle&) const; |
| |
| virtual void AdjustMenuListStyle(ComputedStyle&, Element*) const; |
| virtual void AdjustMenuListButtonStyle(ComputedStyle&, Element*) const; |
| virtual void AdjustSliderContainerStyle(ComputedStyle&, Element*) const; |
| virtual void AdjustSliderThumbStyle(ComputedStyle&) const; |
| virtual void AdjustSearchFieldStyle(ComputedStyle&) const; |
| virtual void AdjustSearchFieldCancelButtonStyle(ComputedStyle&) const; |
| |
| public: |
| // Methods for state querying |
| static bool IsChecked(const Node*); |
| static bool IsIndeterminate(const Node*); |
| static bool IsEnabled(const Node*); |
| static bool IsPressed(const Node*); |
| static bool IsHovered(const Node*); |
| static bool IsReadOnlyControl(const Node*); |
| |
| protected: |
| bool HasCustomFocusRingColor() const; |
| Color GetCustomFocusRingColor() const; |
| |
| private: |
| // This function is to be implemented in your platform-specific theme |
| // implementation to hand back the appropriate platform theme. |
| static LayoutTheme& NativeTheme(); |
| |
| ControlPart AdjustAppearanceWithAuthorStyle(ControlPart part, |
| const ComputedStyle& style); |
| |
| ControlPart AdjustAppearanceWithElementType(const ComputedStyle& style, |
| const Element* element); |
| |
| Color custom_focus_ring_color_; |
| bool has_custom_focus_ring_color_; |
| base::TimeDelta caret_blink_interval_ = |
| base::TimeDelta::FromMilliseconds(500); |
| |
| bool delegates_menu_list_rendering_ = false; |
| |
| // This color is expected to be drawn on a semi-transparent overlay, |
| // making it more transparent than its alpha value indicates. |
| static const RGBA32 kDefaultTapHighlightColor = 0x66000000; |
| |
| static const RGBA32 kDefaultCompositionBackgroundColor = 0xFFFFDD55; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_THEME_H_ |
