/* * This file is part of the theme implementation for form controls in WebCore. * * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 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 #if USE(NEW_THEME) #include "Theme.h" #else #include "ThemeTypes.h" #endif #include "RenderObject.h" #include "ScrollTypes.h" #include #include namespace WebCore { class Element; class PopupMenu; class RenderMenuList; #if ENABLE(METER_TAG) class RenderMeter; #endif #if ENABLE(PROGRESS_TAG) class RenderProgress; #endif class CSSStyleSheet; class RenderTheme : public RefCounted { protected: RenderTheme(); public: virtual ~RenderTheme() { } // This function is to be implemented in your platform-specific theme implementation to hand back the // appropriate platform theme. When the theme is needed in non-page dependent code, a default theme is // used as fallback, which is returned for a nulled page, so the platform code needs to account for this. static PassRefPtr themeForPage(Page* page); // When the theme is needed in non-page dependent code, the defaultTheme() is used as fallback. static inline PassRefPtr defaultTheme() { return themeForPage(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(CSSStyleSelector*, RenderStyle*, Element*, bool UAHasAppearance, const BorderData&, const FillLayer&, const Color& backgroundColor); // 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() { return String(); } virtual String extraQuirksStyleSheet() { return String(); } #if ENABLE(VIDEO) virtual String extraMediaControlsStyleSheet() { return String(); }; #if ENABLE(FULLSCREEN_API) virtual String extraFullScreenStyleSheet() { return String(); }; #endif #endif // 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 BorderData&, const FillLayer&, const Color& backgroundColor) 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; // This method is called whenever the theme changes on the system in order to flush cached resources from the // old theme. virtual void themeChanged() { } // A method asking if the theme is able to draw the focus ring. virtual bool supportsFocusRing(const RenderStyle*) const; // A method asking if the theme's controls actually care about redrawing when hovered. virtual bool supportsHover(const RenderStyle*) const { return false; } // 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&); virtual void platformColorsDidChange(); virtual double caretBlinkInterval() const { return 0.5; } // System fonts and colors for CSS. virtual void systemFont(int cssValueId, FontDescription&) const = 0; virtual Color systemColor(int cssValueId) const; virtual int minimumMenuListSize(RenderStyle*) const { return 0; } virtual void adjustSliderThumbSize(RenderObject*) 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; }; #if ENABLE(PROGRESS_TAG) // 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; #endif #if ENABLE(VIDEO) // 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 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 String formatMediaControlsRemainingTime(float currentTime, float duration) const; // Returns the media volume slider container's offset from the mute button. virtual IntPoint volumeSliderOffsetFromMuteButton(RenderBox*, const IntSize&) const; #endif #if ENABLE(METER_TAG) virtual IntSize meterSizeForBounds(const RenderMeter*, const IntRect&) const; virtual bool supportsMeter(ControlPart) const; #endif virtual bool shouldShowPlaceholderWhenFocused() const { return false; } 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; virtual bool supportsSelectionForegroundColors() const { return true; } virtual bool supportsListBoxSelectionForegroundColors() const { return true; } #if !USE(NEW_THEME) // Methods for each appearance value. virtual void adjustCheckboxStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintCheckbox(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void setCheckboxSize(RenderStyle*) const { } virtual void adjustRadioStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintRadio(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void setRadioSize(RenderStyle*) const { } virtual void adjustButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void setButtonSize(RenderStyle*) const { } virtual void adjustInnerSpinButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintInnerSpinButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustOuterSpinButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintOuterSpinButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } #endif virtual void adjustTextFieldStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintTextField(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustTextAreaStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintTextArea(RenderObject*, const PaintInfo&, const IntRect&) { return true; } #if ENABLE(NO_LISTBOX_RENDERING) virtual void adjustListboxStyle(CSSStyleSelector*, RenderStyle*, Element*) const {} #endif virtual void adjustMenuListStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintMenuList(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustMenuListButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintMenuListButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } #if ENABLE(METER_TAG) virtual void adjustMeterStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintMeter(RenderObject*, const PaintInfo&, const IntRect&); #endif #if ENABLE(PROGRESS_TAG) virtual void adjustProgressBarStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintProgressBar(RenderObject*, const PaintInfo&, const IntRect&) { return true; } #endif #if ENABLE(INPUT_SPEECH) virtual void adjustInputFieldSpeechButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintInputFieldSpeechButton(RenderObject*, const PaintInfo&, const IntRect&); #endif virtual void adjustSliderTrackStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustSliderThumbStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustSearchFieldStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintSearchField(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustSearchFieldCancelButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintSearchFieldCancelButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustSearchFieldDecorationStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintSearchFieldDecoration(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustSearchFieldResultsDecorationStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintSearchFieldResultsDecoration(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual void adjustSearchFieldResultsButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; virtual bool paintSearchFieldResultsButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual bool paintMediaFullscreenButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } virtual bool paintMediaPlayButton(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; } 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; bool isDefault(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; #if USE(NEW_THEME) Theme* m_theme; // The platform-specific theme. #endif }; } // namespace WebCore #endif // RenderTheme_h