| /* |
| * 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 RenderTheme_h |
| #define RenderTheme_h |
| |
| #include "core/platform/ScrollTypes.h" |
| #if USE(NEW_THEME) |
| #include "core/platform/Theme.h" |
| #else |
| #include "core/platform/ThemeTypes.h" |
| #endif |
| #include "core/rendering/RenderObject.h" |
| #include "core/rendering/style/CachedUAStyle.h" |
| #include "wtf/PassRefPtr.h" |
| #include "wtf/RefCounted.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace WebCore { |
| |
| class CSSStyleSheet; |
| class Element; |
| class FileList; |
| class HTMLInputElement; |
| class PopupMenu; |
| class RenderMenuList; |
| class RenderMeter; |
| class RenderProgress; |
| |
| |
| class RenderTheme : public RefCounted<RenderTheme> { |
| protected: |
| RenderTheme(); |
| |
| public: |
| virtual ~RenderTheme() { } |
| |
| // This function is to be implemented in your platform-specific theme implementation to hand back the |
| // appropriate platform theme. |
| static RenderTheme& theme(); |
| |
| static void setSizeIfAuto(RenderStyle*, const IntSize&); |
| |
| // 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(RenderStyle*, Element*, const CachedUAStyle&); |
| |
| // This method is called to paint the widget as a background of the RenderObject. A widget's foreground, e.g., the |
| // text of a button, is always rendered by the engine itself. The boolean return value indicates |
| // whether the CSS border/background should also be painted. |
| bool paint(RenderObject*, const PaintInfo&, const IntRect&); |
| bool paintBorderOnly(RenderObject*, const PaintInfo&, const IntRect&); |
| bool paintDecorations(RenderObject*, const PaintInfo&, const IntRect&); |
| |
| // The remaining methods should be implemented by the platform-specific portion of the theme, e.g., |
| // RenderThemeMac.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, quirks.css or mediaControls.css. |
| virtual String extraDefaultStyleSheet(); |
| virtual String extraQuirksStyleSheet() { return String(); } |
| virtual String extraMediaControlsStyleSheet() { return String(); } |
| virtual String extraFullScreenStyleSheet() { return String(); } |
| |
| // A method to obtain the baseline position for a "leaf" control. This will only be used if a baseline |
| // position cannot be determined by examining child content. Checkboxes and radio buttons are examples of |
| // controls that need to do this. |
| virtual int baselinePosition(const RenderObject*) const; |
| |
| // A method for asking if a control is a container or not. Leaf controls have to have some special behavior (like |
| // the baseline position API above). |
| bool isControlContainer(ControlPart) const; |
| |
| // A method asking if the control changes its tint when the window has focus or not. |
| virtual bool controlSupportsTints(const RenderObject*) const { return false; } |
| |
| // Whether or not the control has been styled enough by the author to disable the native appearance. |
| virtual bool isControlStyled(const RenderStyle*, const CachedUAStyle&) const; |
| |
| // A general method asking if any control tinting is supported at all. |
| virtual bool supportsControlTints() const { return false; } |
| |
| // Some controls may spill out of their containers (e.g., the check on an OS X checkbox). When these controls repaint, |
| // the theme needs to communicate this inflated rect to the engine so that it can invalidate the whole control. |
| virtual void adjustRepaintRect(const RenderObject*, IntRect&); |
| |
| // This method is called whenever a relevant state changes on a particular themed object, e.g., the mouse becomes pressed |
| // or a control becomes disabled. |
| virtual bool stateChanged(RenderObject*, ControlState) const; |
| |
| bool shouldDrawDefaultFocusRing(RenderObject*) const; |
| |
| // A method asking if the theme's controls actually care about redrawing when hovered. |
| virtual bool supportsHover(const RenderStyle*) const { return false; } |
| |
| // A method asking if the platform is able to show datalist suggestions for a given input type. |
| virtual bool supportsDataListUI(const AtomicString&) const; |
| |
| #if ENABLE(INPUT_MULTIPLE_FIELDS_UI) |
| // A method asking if the platform is able to show a calendar picker for a given input type. |
| virtual bool supportsCalendarPicker(const AtomicString&) const; |
| #endif |
| |
| // Text selection colors. |
| Color activeSelectionBackgroundColor() const; |
| Color inactiveSelectionBackgroundColor() const; |
| Color activeSelectionForegroundColor() const; |
| Color inactiveSelectionForegroundColor() const; |
| |
| // List box selection colors |
| Color activeListBoxSelectionBackgroundColor() const; |
| Color activeListBoxSelectionForegroundColor() const; |
| Color inactiveListBoxSelectionBackgroundColor() const; |
| Color inactiveListBoxSelectionForegroundColor() const; |
| |
| // Highlighting colors for TextMatches. |
| virtual Color platformActiveTextSearchHighlightColor() const; |
| virtual Color platformInactiveTextSearchHighlightColor() const; |
| |
| static Color focusRingColor(); |
| virtual Color platformFocusRingColor() const { return Color(0, 0, 0); } |
| static void setCustomFocusRingColor(const Color&); |
| static Color tapHighlightColor(); |
| virtual Color platformTapHighlightColor() const { return RenderTheme::defaultTapHighlightColor; } |
| virtual void platformColorsDidChange(); |
| |
| virtual double caretBlinkInterval() const { return 0.5; } |
| |
| // System fonts and colors for CSS. |
| virtual void systemFont(CSSValueID, FontDescription&) const = 0; |
| virtual Color systemColor(CSSValueID) const; |
| |
| virtual int minimumMenuListSize(RenderStyle*) const { return 0; } |
| |
| virtual void adjustSliderThumbSize(RenderStyle*, Element*) const; |
| |
| virtual int popupInternalPaddingLeft(RenderStyle*) const { return 0; } |
| virtual int popupInternalPaddingRight(RenderStyle*) const { return 0; } |
| virtual int popupInternalPaddingTop(RenderStyle*) const { return 0; } |
| virtual int popupInternalPaddingBottom(RenderStyle*) const { return 0; } |
| virtual bool popupOptionSupportsTextIndent() const { return false; } |
| |
| virtual ScrollbarControlSize scrollbarControlSizeForPart(ControlPart) { return RegularScrollbar; } |
| |
| // Method for painting the caps lock indicator |
| virtual bool paintCapsLockIndicator(RenderObject*, const PaintInfo&, const IntRect&) { return 0; }; |
| |
| // Returns the repeat interval of the animation for the progress bar. |
| virtual double animationRepeatIntervalForProgressBar(RenderProgress*) const; |
| // Returns the duration of the animation for the progress bar. |
| virtual double animationDurationForProgressBar(RenderProgress*) const; |
| |
| // Media controls |
| virtual bool supportsClosedCaptioning() const { return false; } |
| virtual bool hasOwnDisabledStateHandlingFor(ControlPart) const { return false; } |
| virtual bool usesMediaControlStatusDisplay() { return false; } |
| virtual bool usesMediaControlVolumeSlider() const { return true; } |
| virtual bool usesVerticalVolumeSlider() const { return true; } |
| virtual double mediaControlsFadeInDuration() { return 0.1; } |
| virtual double mediaControlsFadeOutDuration() { return 0.3; } |
| virtual String formatMediaControlsTime(float time) const; |
| virtual String formatMediaControlsCurrentTime(float currentTime, float duration) const; |
| |
| virtual IntSize meterSizeForBounds(const RenderMeter*, const IntRect&) const; |
| virtual bool supportsMeter(ControlPart) const; |
| |
| // Returns the threshold distance for snapping to a slider tick mark. |
| virtual LayoutUnit sliderTickSnappingThreshold() const; |
| // 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; |
| void paintSliderTicks(RenderObject*, const PaintInfo&, const IntRect&); |
| |
| virtual bool shouldShowPlaceholderWhenFocused() const { return false; } |
| virtual bool shouldHaveSpinButton(HTMLInputElement*) const; |
| |
| // Functions for <select> elements. |
| virtual bool delegatesMenuListRendering() const { return false; } |
| virtual bool popsMenuByArrowKeys() const { return false; } |
| virtual bool popsMenuBySpaceOrReturn() const { return false; } |
| |
| virtual String fileListDefaultLabel(bool multipleFilesAllowed) const; |
| virtual String fileListNameForWidth(const FileList*, const Font&, int width, bool multipleFilesAllowed) const; |
| |
| virtual bool shouldOpenPickerWithF4Key() const; |
| |
| protected: |
| // The platform selection color. |
| virtual Color platformActiveSelectionBackgroundColor() const; |
| virtual Color platformInactiveSelectionBackgroundColor() const; |
| virtual Color platformActiveSelectionForegroundColor() const; |
| virtual Color platformInactiveSelectionForegroundColor() const; |
| |
| virtual Color platformActiveListBoxSelectionBackgroundColor() const; |
| virtual Color platformInactiveListBoxSelectionBackgroundColor() const; |
| virtual Color platformActiveListBoxSelectionForegroundColor() const; |
| virtual Color platformInactiveListBoxSelectionForegroundColor() const; |
| |
| // A method asking if the theme is able to draw the focus ring. |
| virtual bool supportsFocusRing(const RenderStyle*) const; |
| virtual bool supportsSelectionForegroundColors() const { return true; } |
| virtual bool supportsListBoxSelectionForegroundColors() const { return true; } |
| |
| #if !USE(NEW_THEME) |
| // Methods for each appearance value. |
| virtual void adjustCheckboxStyle(RenderStyle*, Element*) const; |
| virtual bool paintCheckbox(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual void setCheckboxSize(RenderStyle*) const { } |
| |
| virtual void adjustRadioStyle(RenderStyle*, Element*) const; |
| virtual bool paintRadio(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual void setRadioSize(RenderStyle*) const { } |
| |
| virtual void adjustButtonStyle(RenderStyle*, Element*) const; |
| virtual bool paintButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual void setButtonSize(RenderStyle*) const { } |
| |
| virtual void adjustInnerSpinButtonStyle(RenderStyle*, Element*) const; |
| virtual bool paintInnerSpinButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| #endif |
| |
| virtual void adjustTextFieldStyle(RenderStyle*, Element*) const; |
| virtual bool paintTextField(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustTextAreaStyle(RenderStyle*, Element*) const; |
| virtual bool paintTextArea(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustMenuListStyle(RenderStyle*, Element*) const; |
| virtual bool paintMenuList(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustMenuListButtonStyle(RenderStyle*, Element*) const; |
| virtual bool paintMenuListButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustMeterStyle(RenderStyle*, Element*) const; |
| virtual bool paintMeter(RenderObject*, const PaintInfo&, const IntRect&); |
| |
| virtual void adjustProgressBarStyle(RenderStyle*, Element*) const; |
| virtual bool paintProgressBar(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| #if ENABLE(INPUT_SPEECH) |
| virtual void adjustInputFieldSpeechButtonStyle(RenderStyle*, Element*) const; |
| virtual bool paintInputFieldSpeechButton(RenderObject*, const PaintInfo&, const IntRect&); |
| #endif |
| |
| virtual void adjustSliderTrackStyle(RenderStyle*, Element*) const; |
| virtual bool paintSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustSliderThumbStyle(RenderStyle*, Element*) const; |
| virtual bool paintSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustSearchFieldStyle(RenderStyle*, Element*) const; |
| virtual bool paintSearchField(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustSearchFieldCancelButtonStyle(RenderStyle*, Element*) const; |
| virtual bool paintSearchFieldCancelButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustSearchFieldDecorationStyle(RenderStyle*, Element*) const; |
| virtual bool paintSearchFieldDecoration(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustSearchFieldResultsDecorationStyle(RenderStyle*, Element*) const; |
| virtual bool paintSearchFieldResultsDecoration(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual void adjustMediaControlStyle(RenderStyle*, Element*) const; |
| virtual bool paintMediaFullscreenButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaPlayButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaOverlayPlayButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaMuteButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaSeekBackButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaSeekForwardButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaVolumeSliderContainer(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaVolumeSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaVolumeSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaRewindButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaReturnToRealtimeButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaToggleClosedCaptionsButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaControlsBackground(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaCurrentTime(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaTimeRemaining(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaFullScreenVolumeSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| virtual bool paintMediaFullScreenVolumeSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } |
| |
| virtual bool shouldUseFallbackTheme(RenderStyle*) const; |
| void adjustStyleUsingFallbackTheme(RenderStyle*, Element*); |
| bool paintUsingFallbackTheme(RenderObject*, const PaintInfo&, const IntRect&); |
| void adjustCheckboxStyleUsingFallbackTheme(RenderStyle*, Element*) const; |
| bool paintCheckboxUsingFallbackTheme(RenderObject*, const PaintInfo&, const IntRect&); |
| void adjustRadioStyleUsingFallbackTheme(RenderStyle*, Element*) const; |
| bool paintRadioUsingFallbackTheme(RenderObject*, const PaintInfo&, const IntRect&); |
| |
| public: |
| // Methods for state querying |
| ControlStates controlStatesForRenderer(const RenderObject* o) const; |
| bool isActive(const RenderObject*) const; |
| bool isChecked(const RenderObject*) const; |
| bool isIndeterminate(const RenderObject*) const; |
| bool isEnabled(const RenderObject*) const; |
| bool isFocused(const RenderObject*) const; |
| bool isPressed(const RenderObject*) const; |
| bool isSpinUpButtonPartPressed(const RenderObject*) const; |
| bool isHovered(const RenderObject*) const; |
| bool isSpinUpButtonPartHovered(const RenderObject*) const; |
| bool isReadOnlyControl(const RenderObject*) const; |
| |
| private: |
| mutable Color m_activeSelectionBackgroundColor; |
| mutable Color m_inactiveSelectionBackgroundColor; |
| mutable Color m_activeSelectionForegroundColor; |
| mutable Color m_inactiveSelectionForegroundColor; |
| |
| mutable Color m_activeListBoxSelectionBackgroundColor; |
| mutable Color m_inactiveListBoxSelectionBackgroundColor; |
| mutable Color m_activeListBoxSelectionForegroundColor; |
| mutable Color m_inactiveListBoxSelectionForegroundColor; |
| |
| // This color is expected to be drawn on a semi-transparent overlay, |
| // making it more transparent than its alpha value indicates. |
| static const RGBA32 defaultTapHighlightColor = 0x66000000; |
| |
| #if USE(NEW_THEME) |
| Theme* m_platformTheme; // The platform-specific theme. |
| #endif |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // RenderTheme_h |
