1 /* 2 * This file is part of the theme implementation for form controls in WebCore. 3 * 4 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Computer, Inc. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef RenderTheme_h 24 #define RenderTheme_h 25 26 #if USE(NEW_THEME) 27 #include "Theme.h" 28 #else 29 #include "ThemeTypes.h" 30 #endif 31 #include "RenderObject.h" 32 #include "ScrollTypes.h" 33 #include <wtf/PassRefPtr.h> 34 #include <wtf/RefCounted.h> 35 36 namespace WebCore { 37 38 class Element; 39 class PopupMenu; 40 class RenderMenuList; 41 #if ENABLE(METER_TAG) 42 class RenderMeter; 43 #endif 44 #if ENABLE(PROGRESS_TAG) 45 class RenderProgress; 46 #endif 47 class CSSStyleSheet; 48 49 class RenderTheme : public RefCounted<RenderTheme> { 50 protected: 51 RenderTheme(); 52 53 public: 54 virtual ~RenderTheme() { } 55 56 // This function is to be implemented in your platform-specific theme implementation to hand back the 57 // appropriate platform theme. When the theme is needed in non-page dependent code, a default theme is 58 // used as fallback, which is returned for a nulled page, so the platform code needs to account for this. 59 static PassRefPtr<RenderTheme> themeForPage(Page* page); 60 61 // When the theme is needed in non-page dependent code, the defaultTheme() is used as fallback. 62 static inline PassRefPtr<RenderTheme> defaultTheme() 63 { 64 return themeForPage(0); 65 }; 66 67 // This method is called whenever style has been computed for an element and the appearance 68 // property has been set to a value other than "none". The theme should map in all of the appropriate 69 // metrics and defaults given the contents of the style. This includes sophisticated operations like 70 // selection of control size based off the font, the disabling of appearance when certain other properties like 71 // "border" are set, or if the appearance is not supported by the theme. 72 void adjustStyle(CSSStyleSelector*, RenderStyle*, Element*, bool UAHasAppearance, 73 const BorderData&, const FillLayer&, const Color& backgroundColor); 74 75 // This method is called to paint the widget as a background of the RenderObject. A widget's foreground, e.g., the 76 // text of a button, is always rendered by the engine itself. The boolean return value indicates 77 // whether the CSS border/background should also be painted. 78 bool paint(RenderObject*, const PaintInfo&, const IntRect&); 79 bool paintBorderOnly(RenderObject*, const PaintInfo&, const IntRect&); 80 bool paintDecorations(RenderObject*, const PaintInfo&, const IntRect&); 81 82 // The remaining methods should be implemented by the platform-specific portion of the theme, e.g., 83 // RenderThemeMac.cpp for Mac OS X. 84 85 // These methods return the theme's extra style sheets rules, to let each platform 86 // adjust the default CSS rules in html.css, quirks.css, or mediaControls.css 87 virtual String extraDefaultStyleSheet() { return String(); } 88 virtual String extraQuirksStyleSheet() { return String(); } 89 #if ENABLE(VIDEO) 90 virtual String extraMediaControlsStyleSheet() { return String(); }; 91 #if ENABLE(FULLSCREEN_API) 92 virtual String extraFullScreenStyleSheet() { return String(); }; 93 #endif 94 #endif 95 96 // A method to obtain the baseline position for a "leaf" control. This will only be used if a baseline 97 // position cannot be determined by examining child content. Checkboxes and radio buttons are examples of 98 // controls that need to do this. 99 virtual int baselinePosition(const RenderObject*) const; 100 101 // A method for asking if a control is a container or not. Leaf controls have to have some special behavior (like 102 // the baseline position API above). 103 bool isControlContainer(ControlPart) const; 104 105 // A method asking if the control changes its tint when the window has focus or not. 106 virtual bool controlSupportsTints(const RenderObject*) const { return false; } 107 108 // Whether or not the control has been styled enough by the author to disable the native appearance. 109 virtual bool isControlStyled(const RenderStyle*, const BorderData&, const FillLayer&, const Color& backgroundColor) const; 110 111 // A general method asking if any control tinting is supported at all. 112 virtual bool supportsControlTints() const { return false; } 113 114 // Some controls may spill out of their containers (e.g., the check on an OS X checkbox). When these controls repaint, 115 // the theme needs to communicate this inflated rect to the engine so that it can invalidate the whole control. 116 virtual void adjustRepaintRect(const RenderObject*, IntRect&); 117 118 // This method is called whenever a relevant state changes on a particular themed object, e.g., the mouse becomes pressed 119 // or a control becomes disabled. 120 virtual bool stateChanged(RenderObject*, ControlState) const; 121 122 // This method is called whenever the theme changes on the system in order to flush cached resources from the 123 // old theme. 124 virtual void themeChanged() { } 125 126 // A method asking if the theme is able to draw the focus ring. 127 virtual bool supportsFocusRing(const RenderStyle*) const; 128 129 // A method asking if the theme's controls actually care about redrawing when hovered. 130 virtual bool supportsHover(const RenderStyle*) const { return false; } 131 132 // Text selection colors. 133 Color activeSelectionBackgroundColor() const; 134 Color inactiveSelectionBackgroundColor() const; 135 Color activeSelectionForegroundColor() const; 136 Color inactiveSelectionForegroundColor() const; 137 138 // List box selection colors 139 Color activeListBoxSelectionBackgroundColor() const; 140 Color activeListBoxSelectionForegroundColor() const; 141 Color inactiveListBoxSelectionBackgroundColor() const; 142 Color inactiveListBoxSelectionForegroundColor() const; 143 144 // Highlighting colors for TextMatches. 145 virtual Color platformActiveTextSearchHighlightColor() const; 146 virtual Color platformInactiveTextSearchHighlightColor() const; 147 148 static Color focusRingColor(); 149 virtual Color platformFocusRingColor() const { return Color(0, 0, 0); } 150 static void setCustomFocusRingColor(const Color&); 151 152 virtual void platformColorsDidChange(); 153 154 virtual double caretBlinkInterval() const { return 0.5; } 155 156 // System fonts and colors for CSS. 157 virtual void systemFont(int cssValueId, FontDescription&) const = 0; 158 virtual Color systemColor(int cssValueId) const; 159 160 virtual int minimumMenuListSize(RenderStyle*) const { return 0; } 161 162 virtual void adjustSliderThumbSize(RenderObject*) const; 163 164 virtual int popupInternalPaddingLeft(RenderStyle*) const { return 0; } 165 virtual int popupInternalPaddingRight(RenderStyle*) const { return 0; } 166 virtual int popupInternalPaddingTop(RenderStyle*) const { return 0; } 167 virtual int popupInternalPaddingBottom(RenderStyle*) const { return 0; } 168 virtual bool popupOptionSupportsTextIndent() const { return false; } 169 170 virtual ScrollbarControlSize scrollbarControlSizeForPart(ControlPart) { return RegularScrollbar; } 171 172 // Method for painting the caps lock indicator 173 virtual bool paintCapsLockIndicator(RenderObject*, const PaintInfo&, const IntRect&) { return 0; }; 174 175 #if ENABLE(PROGRESS_TAG) 176 // Returns the repeat interval of the animation for the progress bar. 177 virtual double animationRepeatIntervalForProgressBar(RenderProgress*) const; 178 // Returns the duration of the animation for the progress bar. 179 virtual double animationDurationForProgressBar(RenderProgress*) const; 180 #endif 181 182 #if ENABLE(VIDEO) 183 // Media controls 184 virtual bool supportsClosedCaptioning() const { return false; } 185 virtual bool hasOwnDisabledStateHandlingFor(ControlPart) const { return false; } 186 virtual bool usesMediaControlStatusDisplay() { return false; } 187 virtual bool usesMediaControlVolumeSlider() const { return true; } 188 virtual double mediaControlsFadeInDuration() { return 0.1; } 189 virtual double mediaControlsFadeOutDuration() { return 0.3; } 190 virtual String formatMediaControlsTime(float time) const; 191 virtual String formatMediaControlsCurrentTime(float currentTime, float duration) const; 192 virtual String formatMediaControlsRemainingTime(float currentTime, float duration) const; 193 194 // Returns the media volume slider container's offset from the mute button. 195 virtual IntPoint volumeSliderOffsetFromMuteButton(RenderBox*, const IntSize&) const; 196 #endif 197 198 #if ENABLE(METER_TAG) 199 virtual IntSize meterSizeForBounds(const RenderMeter*, const IntRect&) const; 200 virtual bool supportsMeter(ControlPart) const; 201 #endif 202 203 virtual bool shouldShowPlaceholderWhenFocused() const { return false; } 204 205 protected: 206 // The platform selection color. 207 virtual Color platformActiveSelectionBackgroundColor() const; 208 virtual Color platformInactiveSelectionBackgroundColor() const; 209 virtual Color platformActiveSelectionForegroundColor() const; 210 virtual Color platformInactiveSelectionForegroundColor() const; 211 212 virtual Color platformActiveListBoxSelectionBackgroundColor() const; 213 virtual Color platformInactiveListBoxSelectionBackgroundColor() const; 214 virtual Color platformActiveListBoxSelectionForegroundColor() const; 215 virtual Color platformInactiveListBoxSelectionForegroundColor() const; 216 217 virtual bool supportsSelectionForegroundColors() const { return true; } 218 virtual bool supportsListBoxSelectionForegroundColors() const { return true; } 219 220 #if !USE(NEW_THEME) 221 // Methods for each appearance value. 222 virtual void adjustCheckboxStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 223 virtual bool paintCheckbox(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 224 virtual void setCheckboxSize(RenderStyle*) const { } 225 226 virtual void adjustRadioStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 227 virtual bool paintRadio(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 228 virtual void setRadioSize(RenderStyle*) const { } 229 230 virtual void adjustButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 231 virtual bool paintButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 232 virtual void setButtonSize(RenderStyle*) const { } 233 234 virtual void adjustInnerSpinButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 235 virtual bool paintInnerSpinButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 236 virtual void adjustOuterSpinButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 237 virtual bool paintOuterSpinButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 238 #endif 239 240 virtual void adjustTextFieldStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 241 virtual bool paintTextField(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 242 243 virtual void adjustTextAreaStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 244 virtual bool paintTextArea(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 245 246 #if ENABLE(NO_LISTBOX_RENDERING) 247 virtual void adjustListboxStyle(CSSStyleSelector*, RenderStyle*, Element*) const {} 248 #endif 249 virtual void adjustMenuListStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 250 virtual bool paintMenuList(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 251 252 virtual void adjustMenuListButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 253 virtual bool paintMenuListButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 254 255 #if ENABLE(METER_TAG) 256 virtual void adjustMeterStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 257 virtual bool paintMeter(RenderObject*, const PaintInfo&, const IntRect&); 258 #endif 259 260 #if ENABLE(PROGRESS_TAG) 261 virtual void adjustProgressBarStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 262 virtual bool paintProgressBar(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 263 #endif 264 265 #if ENABLE(INPUT_SPEECH) 266 virtual void adjustInputFieldSpeechButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 267 virtual bool paintInputFieldSpeechButton(RenderObject*, const PaintInfo&, const IntRect&); 268 #endif 269 270 virtual void adjustSliderTrackStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 271 virtual bool paintSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 272 273 virtual void adjustSliderThumbStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 274 virtual bool paintSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 275 276 virtual void adjustSearchFieldStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 277 virtual bool paintSearchField(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 278 279 virtual void adjustSearchFieldCancelButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 280 virtual bool paintSearchFieldCancelButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 281 282 virtual void adjustSearchFieldDecorationStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 283 virtual bool paintSearchFieldDecoration(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 284 285 virtual void adjustSearchFieldResultsDecorationStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 286 virtual bool paintSearchFieldResultsDecoration(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 287 288 virtual void adjustSearchFieldResultsButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const; 289 virtual bool paintSearchFieldResultsButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 290 291 virtual bool paintMediaFullscreenButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 292 virtual bool paintMediaPlayButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 293 virtual bool paintMediaMuteButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 294 virtual bool paintMediaSeekBackButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 295 virtual bool paintMediaSeekForwardButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 296 virtual bool paintMediaSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 297 virtual bool paintMediaSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 298 virtual bool paintMediaVolumeSliderContainer(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 299 virtual bool paintMediaVolumeSliderTrack(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 300 virtual bool paintMediaVolumeSliderThumb(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 301 virtual bool paintMediaRewindButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 302 virtual bool paintMediaReturnToRealtimeButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 303 virtual bool paintMediaToggleClosedCaptionsButton(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 304 virtual bool paintMediaControlsBackground(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 305 virtual bool paintMediaCurrentTime(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 306 virtual bool paintMediaTimeRemaining(RenderObject*, const PaintInfo&, const IntRect&) { return true; } 307 308 public: 309 // Methods for state querying 310 ControlStates controlStatesForRenderer(const RenderObject* o) const; 311 bool isActive(const RenderObject*) const; 312 bool isChecked(const RenderObject*) const; 313 bool isIndeterminate(const RenderObject*) const; 314 bool isEnabled(const RenderObject*) const; 315 bool isFocused(const RenderObject*) const; 316 bool isPressed(const RenderObject*) const; 317 bool isSpinUpButtonPartPressed(const RenderObject*) const; 318 bool isHovered(const RenderObject*) const; 319 bool isSpinUpButtonPartHovered(const RenderObject*) const; 320 bool isReadOnlyControl(const RenderObject*) const; 321 bool isDefault(const RenderObject*) const; 322 323 private: 324 mutable Color m_activeSelectionBackgroundColor; 325 mutable Color m_inactiveSelectionBackgroundColor; 326 mutable Color m_activeSelectionForegroundColor; 327 mutable Color m_inactiveSelectionForegroundColor; 328 329 mutable Color m_activeListBoxSelectionBackgroundColor; 330 mutable Color m_inactiveListBoxSelectionBackgroundColor; 331 mutable Color m_activeListBoxSelectionForegroundColor; 332 mutable Color m_inactiveListBoxSelectionForegroundColor; 333 334 #if USE(NEW_THEME) 335 Theme* m_theme; // The platform-specific theme. 336 #endif 337 }; 338 339 } // namespace WebCore 340 341 #endif // RenderTheme_h 342
