/* * 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 #if USE(NEW_THEME) #include "platform/Theme.h" #else #include "platform/ThemeTypes.h" #endif #include "core/rendering/RenderObject.h" #include "core/rendering/style/CachedUAStyle.h" #include "platform/scroll/ScrollTypes.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 { 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 usesVerticalVolumeSlider() const { return true; } 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 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