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| 1 /* | |
| 2 * Copyright (C) 2008, 2011 Apple Inc. All Rights Reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 #include "core/platform/ScrollbarThemeMacCommon.h" | |
| 28 | |
| 29 #include <Carbon/Carbon.h> | |
| 30 #include "core/platform/ScrollbarThemeMacNonOverlayAPI.h" | |
| 31 #include "core/platform/ScrollbarThemeMacOverlayAPI.h" | |
| 32 #include "core/platform/graphics/Gradient.h" | |
| 33 #include "core/platform/graphics/GraphicsContext.h" | |
| 34 #include "core/platform/graphics/GraphicsContextStateSaver.h" | |
| 35 #include "core/platform/graphics/GraphicsLayer.h" | |
| 36 #include "core/platform/graphics/ImageBuffer.h" | |
| 37 #include "core/platform/graphics/mac/ColorMac.h" | |
| 38 #include "core/platform/mac/LocalCurrentGraphicsContext.h" | |
| 39 #include "core/platform/mac/NSScrollerImpDetails.h" | |
| 40 #include "core/platform/mac/ScrollAnimatorMac.h" | |
| 41 #include "platform/PlatformMouseEvent.h" | |
| 42 #include "platform/scroll/ScrollbarThemeClient.h" | |
| 43 #include "public/platform/mac/WebThemeEngine.h" | |
| 44 #include "public/platform/Platform.h" | |
| 45 #include "public/platform/WebRect.h" | |
| 46 #include "skia/ext/skia_utils_mac.h" | |
| 47 #include "wtf/HashSet.h" | |
| 48 #include "wtf/StdLibExtras.h" | |
| 49 #include "wtf/TemporaryChange.h" | |
| 50 #include "wtf/UnusedParam.h" | |
| 51 | |
| 52 // FIXME: There are repainting problems due to Aqua scroll bar buttons' visual o
verflow. | |
| 53 | |
| 54 using namespace std; | |
| 55 using namespace WebCore; | |
| 56 | |
| 57 @interface NSColor (WebNSColorDetails) | |
| 58 + (NSImage *)_linenPatternImage; | |
| 59 @end | |
| 60 | |
| 61 namespace WebCore { | |
| 62 | |
| 63 typedef HashSet<ScrollbarThemeClient*> ScrollbarSet; | |
| 64 | |
| 65 static ScrollbarSet& scrollbarSet() | |
| 66 { | |
| 67 DEFINE_STATIC_LOCAL(ScrollbarSet, set, ()); | |
| 68 return set; | |
| 69 } | |
| 70 | |
| 71 } | |
| 72 | |
| 73 namespace WebCore { | |
| 74 | |
| 75 static float gInitialButtonDelay = 0.5f; | |
| 76 static float gAutoscrollButtonDelay = 0.05f; | |
| 77 static bool gJumpOnTrackClick = false; | |
| 78 | |
| 79 ScrollbarTheme* ScrollbarTheme::nativeTheme() | |
| 80 { | |
| 81 static ScrollbarThemeMacCommon* theme = NULL; | |
| 82 if (theme) | |
| 83 return theme; | |
| 84 if (isScrollbarOverlayAPIAvailable()) { | |
| 85 DEFINE_STATIC_LOCAL(ScrollbarThemeMacOverlayAPI, overlayTheme, ()); | |
| 86 theme = &overlayTheme; | |
| 87 } else { | |
| 88 DEFINE_STATIC_LOCAL(ScrollbarThemeMacNonOverlayAPI, nonOverlayTheme, ())
; | |
| 89 theme = &nonOverlayTheme; | |
| 90 } | |
| 91 return theme; | |
| 92 } | |
| 93 | |
| 94 void ScrollbarThemeMacCommon::registerScrollbar(ScrollbarThemeClient* scrollbar) | |
| 95 { | |
| 96 scrollbarSet().add(scrollbar); | |
| 97 } | |
| 98 | |
| 99 void ScrollbarThemeMacCommon::unregisterScrollbar(ScrollbarThemeClient* scrollba
r) | |
| 100 { | |
| 101 scrollbarSet().remove(scrollbar); | |
| 102 } | |
| 103 | |
| 104 void ScrollbarThemeMacCommon::paintGivenTickmarks(GraphicsContext* context, Scro
llbarThemeClient* scrollbar, const IntRect& rect, const Vector<IntRect>& tickmar
ks) | |
| 105 { | |
| 106 if (scrollbar->orientation() != VerticalScrollbar) | |
| 107 return; | |
| 108 | |
| 109 if (rect.height() <= 0 || rect.width() <= 0) | |
| 110 return; // nothing to draw on. | |
| 111 | |
| 112 if (!tickmarks.size()) | |
| 113 return; | |
| 114 | |
| 115 GraphicsContextStateSaver stateSaver(*context); | |
| 116 context->setShouldAntialias(false); | |
| 117 context->setStrokeColor(Color(0xCC, 0xAA, 0x00, 0xFF)); | |
| 118 context->setFillColor(Color(0xFF, 0xDD, 0x00, 0xFF)); | |
| 119 | |
| 120 for (Vector<IntRect>::const_iterator i = tickmarks.begin(); i != tickmarks.e
nd(); ++i) { | |
| 121 // Calculate how far down (in %) the tick-mark should appear. | |
| 122 const float percent = static_cast<float>(i->y()) / scrollbar->totalSize(
); | |
| 123 if (percent < 0.0 || percent > 1.0) | |
| 124 continue; | |
| 125 | |
| 126 // Calculate how far down (in pixels) the tick-mark should appear. | |
| 127 const int yPos = rect.y() + (rect.height() * percent); | |
| 128 | |
| 129 // Paint. | |
| 130 FloatRect tickRect(rect.x(), yPos, rect.width(), 2); | |
| 131 context->fillRect(tickRect); | |
| 132 context->strokeRect(tickRect, 1); | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 void ScrollbarThemeMacCommon::paintOverhangBackground(GraphicsContext* context,
const IntRect& horizontalOverhangRect, const IntRect& verticalOverhangRect, cons
t IntRect& dirtyRect) | |
| 137 { | |
| 138 const bool hasHorizontalOverhang = !horizontalOverhangRect.isEmpty(); | |
| 139 const bool hasVerticalOverhang = !verticalOverhangRect.isEmpty(); | |
| 140 | |
| 141 GraphicsContextStateSaver stateSaver(*context); | |
| 142 | |
| 143 if (!m_overhangPattern) { | |
| 144 // Lazily load the linen pattern image used for overhang drawing. | |
| 145 RefPtr<Image> patternImage = Image::loadPlatformResource("overhangPatter
n"); | |
| 146 m_overhangPattern = Pattern::create(patternImage, true, true); | |
| 147 } | |
| 148 context->setFillPattern(m_overhangPattern); | |
| 149 if (hasHorizontalOverhang) | |
| 150 context->fillRect(intersection(horizontalOverhangRect, dirtyRect)); | |
| 151 if (hasVerticalOverhang) | |
| 152 context->fillRect(intersection(verticalOverhangRect, dirtyRect)); | |
| 153 } | |
| 154 | |
| 155 void ScrollbarThemeMacCommon::paintOverhangShadows(GraphicsContext* context, con
st IntSize& scrollOffset, const IntRect& horizontalOverhangRect, const IntRect&
verticalOverhangRect, const IntRect& dirtyRect) | |
| 156 { | |
| 157 // The extent of each shadow in pixels. | |
| 158 const int kShadowSize = 4; | |
| 159 // Offset of negative one pixel to make the gradient blend with the toolbar'
s bottom border. | |
| 160 const int kToolbarShadowOffset = -1; | |
| 161 const struct { | |
| 162 float stop; | |
| 163 Color color; | |
| 164 } kShadowColors[] = { | |
| 165 { 0.000, Color(0, 0, 0, 255) }, | |
| 166 { 0.125, Color(0, 0, 0, 57) }, | |
| 167 { 0.375, Color(0, 0, 0, 41) }, | |
| 168 { 0.625, Color(0, 0, 0, 18) }, | |
| 169 { 0.875, Color(0, 0, 0, 6) }, | |
| 170 { 1.000, Color(0, 0, 0, 0) } | |
| 171 }; | |
| 172 const unsigned kNumShadowColors = sizeof(kShadowColors)/sizeof(kShadowColors
[0]); | |
| 173 | |
| 174 const bool hasHorizontalOverhang = !horizontalOverhangRect.isEmpty(); | |
| 175 const bool hasVerticalOverhang = !verticalOverhangRect.isEmpty(); | |
| 176 // Prefer non-additive shadows, but degrade to additive shadows if there is
vertical overhang. | |
| 177 const bool useAdditiveShadows = hasVerticalOverhang; | |
| 178 | |
| 179 GraphicsContextStateSaver stateSaver(*context); | |
| 180 | |
| 181 FloatPoint shadowCornerOrigin; | |
| 182 FloatPoint shadowCornerOffset; | |
| 183 | |
| 184 // Draw the shadow for the horizontal overhang. | |
| 185 if (hasHorizontalOverhang) { | |
| 186 int toolbarShadowHeight = kShadowSize; | |
| 187 RefPtr<Gradient> gradient; | |
| 188 IntRect shadowRect = horizontalOverhangRect; | |
| 189 shadowRect.setHeight(kShadowSize); | |
| 190 if (scrollOffset.height() < 0) { | |
| 191 if (useAdditiveShadows) { | |
| 192 toolbarShadowHeight = std::min(horizontalOverhangRect.height(),
kShadowSize); | |
| 193 } else if (horizontalOverhangRect.height() < 2 * kShadowSize + kTool
barShadowOffset) { | |
| 194 // Split the overhang area between the web content shadow and to
olbar shadow if it's too small. | |
| 195 shadowRect.setHeight((horizontalOverhangRect.height() + 1) / 2); | |
| 196 toolbarShadowHeight = horizontalOverhangRect.height() - shadowRe
ct.height() - kToolbarShadowOffset; | |
| 197 } | |
| 198 shadowRect.setY(horizontalOverhangRect.maxY() - shadowRect.height())
; | |
| 199 gradient = Gradient::create(FloatPoint(0, shadowRect.maxY()), FloatP
oint(0, shadowRect.maxY() - kShadowSize)); | |
| 200 shadowCornerOrigin.setY(shadowRect.maxY()); | |
| 201 shadowCornerOffset.setY(-kShadowSize); | |
| 202 } else { | |
| 203 gradient = Gradient::create(FloatPoint(0, shadowRect.y()), FloatPoin
t(0, shadowRect.maxY())); | |
| 204 shadowCornerOrigin.setY(shadowRect.y()); | |
| 205 } | |
| 206 if (hasVerticalOverhang) { | |
| 207 shadowRect.setWidth(shadowRect.width() - verticalOverhangRect.width(
)); | |
| 208 if (scrollOffset.width() < 0) { | |
| 209 shadowRect.setX(shadowRect.x() + verticalOverhangRect.width()); | |
| 210 shadowCornerOrigin.setX(shadowRect.x()); | |
| 211 shadowCornerOffset.setX(-kShadowSize); | |
| 212 } else { | |
| 213 shadowCornerOrigin.setX(shadowRect.maxX()); | |
| 214 } | |
| 215 } | |
| 216 for (unsigned i = 0; i < kNumShadowColors; i++) | |
| 217 gradient->addColorStop(kShadowColors[i].stop, kShadowColors[i].color
); | |
| 218 context->setFillGradient(gradient); | |
| 219 context->fillRect(intersection(shadowRect, dirtyRect)); | |
| 220 | |
| 221 // Draw a drop-shadow from the toolbar. | |
| 222 if (scrollOffset.height() < 0) { | |
| 223 shadowRect.setY(kToolbarShadowOffset); | |
| 224 shadowRect.setHeight(toolbarShadowHeight); | |
| 225 gradient = Gradient::create(FloatPoint(0, shadowRect.y()), FloatPoin
t(0, shadowRect.y() + kShadowSize)); | |
| 226 for (unsigned i = 0; i < kNumShadowColors; i++) | |
| 227 gradient->addColorStop(kShadowColors[i].stop, kShadowColors[i].c
olor); | |
| 228 context->setFillGradient(gradient); | |
| 229 context->fillRect(intersection(shadowRect, dirtyRect)); | |
| 230 } | |
| 231 } | |
| 232 | |
| 233 // Draw the shadow for the vertical overhang. | |
| 234 if (hasVerticalOverhang) { | |
| 235 RefPtr<Gradient> gradient; | |
| 236 IntRect shadowRect = verticalOverhangRect; | |
| 237 shadowRect.setWidth(kShadowSize); | |
| 238 if (scrollOffset.width() < 0) { | |
| 239 shadowRect.setX(verticalOverhangRect.maxX() - shadowRect.width()); | |
| 240 gradient = Gradient::create(FloatPoint(shadowRect.maxX(), 0), FloatP
oint(shadowRect.x(), 0)); | |
| 241 } else { | |
| 242 gradient = Gradient::create(FloatPoint(shadowRect.x(), 0), FloatPoin
t(shadowRect.maxX(), 0)); | |
| 243 } | |
| 244 for (unsigned i = 0; i < kNumShadowColors; i++) | |
| 245 gradient->addColorStop(kShadowColors[i].stop, kShadowColors[i].color
); | |
| 246 context->setFillGradient(gradient); | |
| 247 context->fillRect(intersection(shadowRect, dirtyRect)); | |
| 248 | |
| 249 // Draw a drop-shadow from the toolbar. | |
| 250 shadowRect = verticalOverhangRect; | |
| 251 shadowRect.setY(kToolbarShadowOffset); | |
| 252 shadowRect.setHeight(kShadowSize); | |
| 253 gradient = Gradient::create(FloatPoint(0, shadowRect.y()), FloatPoint(0,
shadowRect.maxY())); | |
| 254 for (unsigned i = 0; i < kNumShadowColors; i++) | |
| 255 gradient->addColorStop(kShadowColors[i].stop, kShadowColors[i].color
); | |
| 256 context->setFillGradient(gradient); | |
| 257 context->fillRect(intersection(shadowRect, dirtyRect)); | |
| 258 } | |
| 259 | |
| 260 // If both rectangles present, draw a radial gradient for the corner. | |
| 261 if (hasHorizontalOverhang && hasVerticalOverhang) { | |
| 262 RefPtr<Gradient> gradient = Gradient::create(shadowCornerOrigin, 0, shad
owCornerOrigin, kShadowSize); | |
| 263 for (unsigned i = 0; i < kNumShadowColors; i++) | |
| 264 gradient->addColorStop(kShadowColors[i].stop, kShadowColors[i].color
); | |
| 265 context->setFillGradient(gradient); | |
| 266 context->fillRect(FloatRect(shadowCornerOrigin.x() + shadowCornerOffset.
x(), shadowCornerOrigin.y() + shadowCornerOffset.y(), kShadowSize, kShadowSize))
; | |
| 267 } | |
| 268 } | |
| 269 | |
| 270 void ScrollbarThemeMacCommon::paintTickmarks(GraphicsContext* context, Scrollbar
ThemeClient* scrollbar, const IntRect& rect) | |
| 271 { | |
| 272 // Note: This is only used for css-styled scrollbars on mac. | |
| 273 if (scrollbar->orientation() != VerticalScrollbar) | |
| 274 return; | |
| 275 | |
| 276 if (rect.height() <= 0 || rect.width() <= 0) | |
| 277 return; | |
| 278 | |
| 279 Vector<IntRect> tickmarks; | |
| 280 scrollbar->getTickmarks(tickmarks); | |
| 281 if (!tickmarks.size()) | |
| 282 return; | |
| 283 | |
| 284 // Inset a bit. | |
| 285 IntRect tickmarkTrackRect = rect; | |
| 286 tickmarkTrackRect.setX(tickmarkTrackRect.x() + 1); | |
| 287 tickmarkTrackRect.setWidth(tickmarkTrackRect.width() - 2); | |
| 288 paintGivenTickmarks(context, scrollbar, tickmarkTrackRect, tickmarks); | |
| 289 } | |
| 290 | |
| 291 ScrollbarThemeMacCommon::~ScrollbarThemeMacCommon() | |
| 292 { | |
| 293 } | |
| 294 | |
| 295 void ScrollbarThemeMacCommon::preferencesChanged(float initialButtonDelay, float
autoscrollButtonDelay, bool jumpOnTrackClick, bool redraw) | |
| 296 { | |
| 297 updateButtonPlacement(); | |
| 298 gInitialButtonDelay = initialButtonDelay; | |
| 299 gAutoscrollButtonDelay = autoscrollButtonDelay; | |
| 300 gJumpOnTrackClick = jumpOnTrackClick; | |
| 301 if (redraw && !scrollbarSet().isEmpty()) { | |
| 302 ScrollbarSet::iterator end = scrollbarSet().end(); | |
| 303 for (ScrollbarSet::iterator it = scrollbarSet().begin(); it != end; ++it
) { | |
| 304 (*it)->styleChanged(); | |
| 305 (*it)->invalidate(); | |
| 306 } | |
| 307 } | |
| 308 } | |
| 309 | |
| 310 double ScrollbarThemeMacCommon::initialAutoscrollTimerDelay() | |
| 311 { | |
| 312 return gInitialButtonDelay; | |
| 313 } | |
| 314 | |
| 315 double ScrollbarThemeMacCommon::autoscrollTimerDelay() | |
| 316 { | |
| 317 return gAutoscrollButtonDelay; | |
| 318 } | |
| 319 | |
| 320 bool ScrollbarThemeMacCommon::shouldCenterOnThumb(ScrollbarThemeClient*, const P
latformMouseEvent& evt) | |
| 321 { | |
| 322 if (evt.button() != LeftButton) | |
| 323 return false; | |
| 324 if (gJumpOnTrackClick) | |
| 325 return !evt.altKey(); | |
| 326 return evt.altKey(); | |
| 327 } | |
| 328 | |
| 329 bool ScrollbarThemeMacCommon::shouldDragDocumentInsteadOfThumb(ScrollbarThemeCli
ent*, const PlatformMouseEvent& event) | |
| 330 { | |
| 331 return event.altKey(); | |
| 332 } | |
| 333 | |
| 334 int ScrollbarThemeMacCommon::scrollbarPartToHIPressedState(ScrollbarPart part) | |
| 335 { | |
| 336 switch (part) { | |
| 337 case BackButtonStartPart: | |
| 338 return kThemeTopOutsideArrowPressed; | |
| 339 case BackButtonEndPart: | |
| 340 return kThemeTopOutsideArrowPressed; // This does not make much sens
e. For some reason the outside constant is required. | |
| 341 case ForwardButtonStartPart: | |
| 342 return kThemeTopInsideArrowPressed; | |
| 343 case ForwardButtonEndPart: | |
| 344 return kThemeBottomOutsideArrowPressed; | |
| 345 case ThumbPart: | |
| 346 return kThemeThumbPressed; | |
| 347 default: | |
| 348 return 0; | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 } // namespace WebCore | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk