Source/WebCore/platform/graphics/android/GraphicsLayerAndroid.cpp

   1 /*
   2  * Copyright (C) 2009 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include "config.h"
  18 #include "GraphicsLayerAndroid.h"
  19
  20 #if USE(ACCELERATED_COMPOSITING)
  21
  22 #include "AndroidAnimation.h"
  23 #include "Animation.h"
  24 #include "FloatRect.h"
  25 #include "GraphicsContext.h"
  26 #include "Image.h"
  27 #include "ImagesManager.h"
  28 #include "Layer.h"
  29 #include "Length.h"
  30 #include "MediaLayer.h"
  31 #include "PlatformBridge.h"
  32 #include "PlatformGraphicsContext.h"
  33 #include "RenderLayerBacking.h"
  34 #include "RenderView.h"
  35 #include "RotateTransformOperation.h"
  36 #include "ScaleTransformOperation.h"
  37 #include "ScrollableLayerAndroid.h"
  38 #include "SkCanvas.h"
  39 #include "SkRegion.h"
  40 #include "TransformationMatrix.h"
  41 #include "TranslateTransformOperation.h"
  42
  43 #include <cutils/log.h>
  44 #include <wtf/CurrentTime.h>
  45 #include <wtf/text/CString.h>
  46
  47 #undef LOG
  48 #define LOG(...) android_printLog(ANDROID_LOG_DEBUG, "GraphicsLayer", __VA_ARGS__)
  49 #define MLOG(...) android_printLog(ANDROID_LOG_DEBUG, "GraphicsLayer", __VA_ARGS__)
  50 #define TLOG(...) android_printLog(ANDROID_LOG_DEBUG, "GraphicsLayer", __VA_ARGS__)
  51
  52 #undef LOG
  53 #define LOG(...)
  54 #undef MLOG
  55 #define MLOG(...)
  56 #undef TLOG
  57 #define TLOG(...)
  58 #undef LAYER_DEBUG
  59
  60 using namespace std;
  61
  62 static bool gPaused;
  63 static double gPausedDelay;
  64
  65 namespace WebCore {
  66
  67 static int gDebugGraphicsLayerAndroidInstances = 0;
  68 inline int GraphicsLayerAndroid::instancesCount()
  69 {
  70     return gDebugGraphicsLayerAndroidInstances;
  71 }
  72
  73 static String propertyIdToString(AnimatedPropertyID property)
  74 {
  75     switch (property) {
  76     case AnimatedPropertyWebkitTransform:
  77         return "transform";
  78     case AnimatedPropertyOpacity:
  79         return "opacity";
  80     case AnimatedPropertyBackgroundColor:
  81         return "backgroundColor";
  82     case AnimatedPropertyInvalid:
  83         ASSERT_NOT_REACHED();
  84     }
  85     ASSERT_NOT_REACHED();
  86     return "";
  87 }
  88
  89 PassOwnPtr<GraphicsLayer> GraphicsLayer::create(GraphicsLayerClient* client)
  90 {
  91     return new GraphicsLayerAndroid(client);
  92 }
  93
  94 SkLength convertLength(Length len)
  95 {
  96     SkLength length;
  97     length.type = SkLength::Undefined;
  98     length.value = 0;
  99     if (len.type() == WebCore::Percent) {
 100         length.type = SkLength::Percent;
 101         length.value = len.percent();
 102     }
 103     if (len.type() == WebCore::Fixed) {
 104         length.type = SkLength::Fixed;
 105         length.value = len.value();
 106     }
 107     return length;
 108 }
 109
 110 static RenderLayer* renderLayerFromClient(GraphicsLayerClient* client)
 111 {
 112     return client ? client->owningLayer() : 0;
 113 }
 114
 115 GraphicsLayerAndroid::GraphicsLayerAndroid(GraphicsLayerClient* client) :
 116     GraphicsLayer(client),
 117     m_needsSyncChildren(false),
 118     m_needsSyncMask(false),
 119     m_needsRepaint(false),
 120     m_needsNotifyClient(false),
 121     m_haveContents(false),
 122     m_haveImage(false),
 123     m_newImage(false),
 124     m_foregroundLayer(0),
 125     m_foregroundClipLayer(0)
 126 {
 127     RenderLayer* renderLayer = renderLayerFromClient(m_client);
 128     m_contentLayer = new LayerAndroid(renderLayer);
 129     m_dirtyRegion.setEmpty();
 130     gDebugGraphicsLayerAndroidInstances++;
 131 }
 132
 133 GraphicsLayerAndroid::~GraphicsLayerAndroid()
 134 {
 135     m_contentLayer->unref();
 136     SkSafeUnref(m_foregroundLayer);
 137     SkSafeUnref(m_foregroundClipLayer);
 138     gDebugGraphicsLayerAndroidInstances--;
 139 }
 140
 141 void GraphicsLayerAndroid::setName(const String& name)
 142 {
 143     GraphicsLayer::setName(name);
 144 }
 145
 146 NativeLayer GraphicsLayerAndroid::nativeLayer() const
 147 {
 148     LOG("(%x) nativeLayer", this);
 149     return 0;
 150 }
 151
 152 bool GraphicsLayerAndroid::setChildren(const Vector<GraphicsLayer*>& children)
 153 {
 154     bool childrenChanged = GraphicsLayer::setChildren(children);
 155     if (childrenChanged) {
 156         m_needsSyncChildren = true;
 157         askForSync();
 158     }
 159
 160     return childrenChanged;
 161 }
 162
 163 void GraphicsLayerAndroid::addChild(GraphicsLayer* childLayer)
 164 {
 165 #ifndef NDEBUG
 166     const String& name = childLayer->name();
 167     LOG("(%x) addChild: %x (%s)", this, childLayer, name.latin1().data());
 168 #endif
 169     GraphicsLayer::addChild(childLayer);
 170     m_needsSyncChildren = true;
 171     askForSync();
 172 }
 173
 174 void GraphicsLayerAndroid::addChildAtIndex(GraphicsLayer* childLayer, int index)
 175 {
 176     LOG("(%x) addChild %x AtIndex %d", this, childLayer, index);
 177     GraphicsLayer::addChildAtIndex(childLayer, index);
 178     m_needsSyncChildren = true;
 179     askForSync();
 180 }
 181
 182 void GraphicsLayerAndroid::addChildBelow(GraphicsLayer* childLayer, GraphicsLayer* sibling)
 183 {
 184     LOG("(%x) addChild %x Below %x", this, childLayer, sibling);
 185     GraphicsLayer::addChildBelow(childLayer, sibling);
 186     m_needsSyncChildren = true;
 187     askForSync();
 188 }
 189
 190 void GraphicsLayerAndroid::addChildAbove(GraphicsLayer* childLayer, GraphicsLayer* sibling)
 191 {
 192     LOG("(%x) addChild %x Above %x", this, childLayer, sibling);
 193     GraphicsLayer::addChildAbove(childLayer, sibling);
 194     m_needsSyncChildren = true;
 195     askForSync();
 196 }
 197
 198 bool GraphicsLayerAndroid::replaceChild(GraphicsLayer* oldChild, GraphicsLayer* newChild)
 199 {
 200     LOG("(%x) replaceChild %x by %x", this, oldChild, newChild);
 201     bool ret = GraphicsLayer::replaceChild(oldChild, newChild);
 202     if (ret) {
 203         m_needsSyncChildren = true;
 204         askForSync();
 205     }
 206     return ret;
 207 }
 208
 209 void GraphicsLayerAndroid::removeFromParent()
 210 {
 211     LOG("(%x) removeFromParent()", this);
 212     GraphicsLayerAndroid* parent = static_cast<GraphicsLayerAndroid*>(m_parent);
 213     GraphicsLayer::removeFromParent();
 214     // Update the parent's children.
 215     if (parent) {
 216         parent->m_needsSyncChildren = true;
 217         askForSync();
 218     }
 219 }
 220
 221 void GraphicsLayerAndroid::updateFixedPosition()
 222 {
 223     RenderLayer* renderLayer = renderLayerFromClient(m_client);
 224     if (!renderLayer)
 225         return;
 226     RenderView* view = static_cast<RenderView*>(renderLayer->renderer());
 227
 228     if (!view)
 229         return;
 230
 231     // We will need the Iframe flag in the LayerAndroid tree for fixed position
 232     if (view->isRenderIFrame())
 233         m_contentLayer->setIsIframe(true);
 234     // If we are a fixed position layer, just set it
 235     if (view->isPositioned() && view->style()->position() == FixedPosition) {
 236         // We need to get the passed CSS properties for the element
 237         SkLength left, top, right, bottom;
 238         left = convertLength(view->style()->left());
 239         top = convertLength(view->style()->top());
 240         right = convertLength(view->style()->right());
 241         bottom = convertLength(view->style()->bottom());
 242
 243         // We also need to get the margin...
 244         SkLength marginLeft, marginTop, marginRight, marginBottom;
 245         marginLeft = convertLength(view->style()->marginLeft());
 246         marginTop = convertLength(view->style()->marginTop());
 247         marginRight = convertLength(view->style()->marginRight());
 248         marginBottom = convertLength(view->style()->marginBottom());
 249
 250         // In order to compute the fixed element's position, we need the width
 251         // and height of the element when bottom or right is defined.
 252         // And here we should use the non-overflowed value, that means, the
 253         // overflowed content (e.g. outset shadow) will not be counted into the
 254         // width and height.
 255         int w = view->width();
 256         int h = view->height();
 257
 258         int paintingOffsetX = - offsetFromRenderer().width();
 259         int paintingOffsetY = - offsetFromRenderer().height();
 260
 261         SkRect viewRect;
 262         viewRect.set(paintingOffsetX, paintingOffsetY, paintingOffsetX + w, paintingOffsetY + h);
 263         IntPoint renderLayerPos(renderLayer->x(), renderLayer->y());
 264         m_contentLayer->setFixedPosition(left, top, right, bottom,
 265                                          marginLeft, marginTop,
 266                                          marginRight, marginBottom,
 267                                          renderLayerPos,
 268                                          viewRect);
 269     }
 270 }
 271
 272 void GraphicsLayerAndroid::setPosition(const FloatPoint& point)
 273 {
 274     if (point == m_position)
 275         return;
 276
 277     GraphicsLayer::setPosition(point);
 278
 279 #ifdef LAYER_DEBUG_2
 280     LOG("(%x) setPosition(%.2f,%.2f) pos(%.2f, %.2f) anchor(%.2f,%.2f) size(%.2f, %.2f)",
 281         this, point.x(), point.y(), m_position.x(), m_position.y(),
 282         m_anchorPoint.x(), m_anchorPoint.y(), m_size.width(), m_size.height());
 283 #endif
 284     m_contentLayer->setPosition(point.x(), point.y());
 285     askForSync();
 286 }
 287
 288 void GraphicsLayerAndroid::setPreserves3D(bool preserves3D)
 289 {
 290     if (preserves3D == m_preserves3D)
 291         return;
 292
 293     GraphicsLayer::setPreserves3D(preserves3D);
 294     m_contentLayer->setPreserves3D(preserves3D);
 295     askForSync();
 296 }
 297
 298 void GraphicsLayerAndroid::setAnchorPoint(const FloatPoint3D& point)
 299 {
 300     if (point == m_anchorPoint)
 301         return;
 302     GraphicsLayer::setAnchorPoint(point);
 303     m_contentLayer->setAnchorPoint(point.x(), point.y());
 304     m_contentLayer->setAnchorPointZ(point.z());
 305     askForSync();
 306 }
 307
 308 void GraphicsLayerAndroid::setSize(const FloatSize& size)
 309 {
 310     if (size == m_size)
 311         return;
 312     MLOG("(%x) setSize (%.2f,%.2f)", this, size.width(), size.height());
 313     GraphicsLayer::setSize(size);
 314
 315     // If it is a media layer the size may have changed as a result of the media
 316     // element (e.g. plugin) gaining focus. Therefore, we must sync the size of
 317     // the focus' outline so that our UI thread can draw accordingly.
 318     RenderLayer* layer = renderLayerFromClient(m_client);
 319     if (layer && m_contentLayer->isMedia()) {
 320         RenderBox* box = layer->renderBox();
 321         int outline = box->view()->maximalOutlineSize();
 322         static_cast<MediaLayer*>(m_contentLayer)->setOutlineSize(outline);
 323         LOG("Media Outline: %d %p %p %p", outline, m_client, layer, box);
 324         LOG("Media Size: %g,%g", size.width(), size.height());
 325     }
 326
 327     m_contentLayer->setSize(size.width(), size.height());
 328     setNeedsDisplay();
 329     askForSync();
 330 }
 331
 332 void GraphicsLayerAndroid::setBackfaceVisibility(bool b)
 333 {
 334     GraphicsLayer::setBackfaceVisibility(b);
 335     m_contentLayer->setBackfaceVisibility(b);
 336     askForSync();
 337 }
 338
 339 void GraphicsLayerAndroid::setTransform(const TransformationMatrix& t)
 340 {
 341     if (t == m_transform)
 342         return;
 343
 344     GraphicsLayer::setTransform(t);
 345     m_contentLayer->setTransform(t);
 346     askForSync();
 347 }
 348
 349 void GraphicsLayerAndroid::setChildrenTransform(const TransformationMatrix& t)
 350 {
 351     if (t == m_childrenTransform)
 352        return;
 353     LOG("(%x) setChildrenTransform", this);
 354
 355     GraphicsLayer::setChildrenTransform(t);
 356     m_contentLayer->setChildrenTransform(t);
 357     for (unsigned int i = 0; i < m_children.size(); i++) {
 358         GraphicsLayer* layer = m_children[i];
 359         layer->setTransform(t);
 360         if (layer->children().size())
 361             layer->setChildrenTransform(t);
 362     }
 363     askForSync();
 364 }
 365
 366 void GraphicsLayerAndroid::setMaskLayer(GraphicsLayer* layer)
 367 {
 368     if (layer == m_maskLayer)
 369         return;
 370
 371     GraphicsLayer::setMaskLayer(layer);
 372     m_needsSyncMask = true;
 373     askForSync();
 374 }
 375
 376 void GraphicsLayerAndroid::setMasksToBounds(bool masksToBounds)
 377 {
 378     if (masksToBounds == m_masksToBounds)
 379         return;
 380     GraphicsLayer::setMasksToBounds(masksToBounds);
 381     m_needsSyncMask = true;
 382     askForSync();
 383 }
 384
 385 void GraphicsLayerAndroid::setDrawsContent(bool drawsContent)
 386 {
 387     if (drawsContent == m_drawsContent)
 388         return;
 389     GraphicsLayer::setDrawsContent(drawsContent);
 390     m_contentLayer->setVisible(drawsContent);
 391     if (m_drawsContent) {
 392         m_haveContents = true;
 393         setNeedsDisplay();
 394     }
 395     askForSync();
 396 }
 397
 398 void GraphicsLayerAndroid::setBackgroundColor(const Color& color)
 399 {
 400     if (color == m_backgroundColor)
 401         return;
 402     LOG("(%x) setBackgroundColor", this);
 403     GraphicsLayer::setBackgroundColor(color);
 404     SkColor c = SkColorSetARGB(color.alpha(), color.red(), color.green(), color.blue());
 405     m_contentLayer->setBackgroundColor(c);
 406     m_haveContents = true;
 407     askForSync();
 408 }
 409
 410 void GraphicsLayerAndroid::clearBackgroundColor()
 411 {
 412     LOG("(%x) clearBackgroundColor", this);
 413     GraphicsLayer::clearBackgroundColor();
 414     askForSync();
 415 }
 416
 417 void GraphicsLayerAndroid::setContentsOpaque(bool opaque)
 418 {
 419     if (opaque == m_contentsOpaque)
 420         return;
 421     LOG("(%x) setContentsOpaque (%d)", this, opaque);
 422     GraphicsLayer::setContentsOpaque(opaque);
 423     m_haveContents = true;
 424     askForSync();
 425 }
 426
 427 void GraphicsLayerAndroid::setOpacity(float opacity)
 428 {
 429     LOG("(%x) setOpacity: %.2f", this, opacity);
 430     float clampedOpacity = max(0.0f, min(opacity, 1.0f));
 431
 432     if (clampedOpacity == m_opacity)
 433         return;
 434
 435     MLOG("(%x) setFinalOpacity: %.2f=>%.2f (%.2f)", this,
 436         opacity, clampedOpacity, m_opacity);
 437     GraphicsLayer::setOpacity(clampedOpacity);
 438     m_contentLayer->setOpacity(clampedOpacity);
 439     askForSync();
 440 }
 441
 442 void GraphicsLayerAndroid::setNeedsDisplay()
 443 {
 444     LOG("(%x) setNeedsDisplay()", this);
 445     FloatRect rect(0, 0, m_size.width(), m_size.height());
 446     setNeedsDisplayInRect(rect);
 447 }
 448
 449 // Helper to set and clear the painting phase as well as auto restore the
 450 // original phase.
 451 class PaintingPhase {
 452 public:
 453     PaintingPhase(GraphicsLayer* layer)
 454         : m_layer(layer)
 455         , m_originalPhase(layer->paintingPhase()) {}
 456
 457     ~PaintingPhase()
 458     {
 459         m_layer->setPaintingPhase(m_originalPhase);
 460     }
 461
 462     void set(GraphicsLayerPaintingPhase phase)
 463     {
 464         m_layer->setPaintingPhase(phase);
 465     }
 466
 467     void clear(GraphicsLayerPaintingPhase phase)
 468     {
 469         m_layer->setPaintingPhase(
 470                 (GraphicsLayerPaintingPhase) (m_originalPhase & ~phase));
 471     }
 472 private:
 473     GraphicsLayer* m_layer;
 474     GraphicsLayerPaintingPhase m_originalPhase;
 475 };
 476
 477 void GraphicsLayerAndroid::updateScrollingLayers()
 478 {
 479 #if ENABLE(ANDROID_OVERFLOW_SCROLL)
 480     RenderLayer* layer = renderLayerFromClient(m_client);
 481     if (!layer || !m_haveContents)
 482         return;
 483     bool hasOverflowScroll = m_foregroundLayer || m_contentLayer->contentIsScrollable();
 484     bool layerNeedsOverflow = layer->hasOverflowScroll();
 485     bool iframeNeedsOverflow = layer->isRootLayer() &&
 486         layer->renderer()->frame()->ownerRenderer() &&
 487         layer->renderer()->frame()->view()->hasOverflowScroll();
 488
 489     if (hasOverflowScroll && (layerNeedsOverflow || iframeNeedsOverflow)) {
 490         // Already has overflow layers.
 491         return;
 492     }
 493     if (!hasOverflowScroll && !layerNeedsOverflow && !iframeNeedsOverflow) {
 494         // Does not need overflow layers.
 495         return;
 496     }
 497     if (layerNeedsOverflow || iframeNeedsOverflow) {
 498         ASSERT(!hasOverflowScroll);
 499         if (layerNeedsOverflow) {
 500             ASSERT(!m_foregroundLayer && !m_foregroundClipLayer);
 501             m_foregroundLayer = new ScrollableLayerAndroid(layer);
 502             m_foregroundClipLayer = new LayerAndroid(layer);
 503             m_foregroundClipLayer->setMasksToBounds(true);
 504             m_foregroundClipLayer->addChild(m_foregroundLayer);
 505             m_contentLayer->addChild(m_foregroundClipLayer);
 506             m_contentLayer->setHasOverflowChildren(true);
 507         } else {
 508             ASSERT(iframeNeedsOverflow && !m_contentLayer->contentIsScrollable());
 509             // No need to copy the children as they will be removed and synced.
 510             m_contentLayer->removeChildren();
 511             // Replace the content layer with a scrollable layer.
 512             LayerAndroid* layer = new ScrollableLayerAndroid(*m_contentLayer);
 513             m_contentLayer->unref();
 514             m_contentLayer = layer;
 515             if (m_parent) {
 516                 // The content layer has changed so the parent needs to sync
 517                 // children.
 518                 static_cast<GraphicsLayerAndroid*>(m_parent)->m_needsSyncChildren = true;
 519             }
 520         }
 521         // Need to rebuild our children based on the new structure.
 522         m_needsSyncChildren = true;
 523     } else {
 524         ASSERT(hasOverflowScroll && !layerNeedsOverflow && !iframeNeedsOverflow);
 525         ASSERT(m_contentLayer);
 526         // Remove the foreground layers.
 527         if (m_foregroundLayer) {
 528             m_foregroundLayer->unref();
 529             m_foregroundLayer = 0;
 530             m_foregroundClipLayer->unref();
 531             m_foregroundClipLayer = 0;
 532         }
 533         // No need to copy over children.
 534         m_contentLayer->removeChildren();
 535         LayerAndroid* layer = new LayerAndroid(*m_contentLayer);
 536         m_contentLayer->unref();
 537         m_contentLayer = layer;
 538         if (m_parent) {
 539             // The content layer has changed so the parent needs to sync
 540             // children.
 541             static_cast<GraphicsLayerAndroid*>(m_parent)->m_needsSyncChildren = true;
 542         }
 543         // Children are all re-parented.
 544         m_needsSyncChildren = true;
 545     }
 546 #endif
 547 }
 548
 549 bool GraphicsLayerAndroid::repaint()
 550 {
 551     LOG("(%x) repaint(), gPaused(%d) m_needsRepaint(%d) m_haveContents(%d) ",
 552         this, gPaused, m_needsRepaint, m_haveContents);
 553
 554     if (!gPaused && m_haveContents && m_needsRepaint && !m_haveImage) {
 555         // with SkPicture, we request the entire layer's content.
 556         IntRect layerBounds(0, 0, m_size.width(), m_size.height());
 557
 558         RenderLayer* layer = renderLayerFromClient(m_client);
 559         if (!layer)
 560             return false;
 561         if (m_foregroundLayer) {
 562             PaintingPhase phase(this);
 563             // Paint the background into a separate context.
 564             phase.set(GraphicsLayerPaintBackground);
 565             if (!paintContext(m_contentLayer->recordContext(), layerBounds))
 566                 return false;
 567             m_contentLayer->checkTextPresence();
 568
 569             // Construct the foreground layer and draw.
 570             RenderBox* box = layer->renderBox();
 571             int outline = box->view()->maximalOutlineSize();
 572             IntRect contentsRect(0, 0,
 573                                  box->borderLeft() + box->borderRight() + layer->scrollWidth(),
 574                                  box->borderTop() + box->borderBottom() + layer->scrollHeight());
 575             contentsRect.inflate(outline);
 576             // Update the foreground layer size.
 577             m_foregroundLayer->setSize(contentsRect.width(), contentsRect.height());
 578             // Paint everything else into the main recording canvas.
 579             phase.clear(GraphicsLayerPaintBackground);
 580
 581             // Paint at 0,0.
 582             IntSize scroll = layer->scrolledContentOffset();
 583             layer->scrollToOffset(0, 0);
 584             // At this point, it doesn't matter if painting failed.
 585             (void) paintContext(m_foregroundLayer->recordContext(), contentsRect);
 586             m_foregroundLayer->checkTextPresence();
 587             layer->scrollToOffset(scroll.width(), scroll.height());
 588
 589             // Construct the clip layer for masking the contents.
 590             IntRect clip = layer->renderer()->absoluteBoundingBoxRect();
 591             // absoluteBoundingBoxRect does not include the outline so we need
 592             // to offset the position.
 593             int x = box->borderLeft() + outline;
 594             int y = box->borderTop() + outline;
 595             int width = clip.width() - box->borderLeft() - box->borderRight();
 596             int height = clip.height() - box->borderTop() - box->borderBottom();
 597             m_foregroundClipLayer->setPosition(x, y);
 598             m_foregroundClipLayer->setSize(width, height);
 599
 600             // Need to offset the foreground layer by the clip layer in order
 601             // for the contents to be in the correct position.
 602             m_foregroundLayer->setPosition(-x, -y);
 603             // Set the scrollable bounds of the layer.
 604             m_foregroundLayer->setScrollLimits(-x, -y, m_size.width(), m_size.height());
 605             m_foregroundLayer->markAsDirty(m_dirtyRegion);
 606             m_foregroundLayer->needsRepaint();
 607         } else {
 608             // If there is no contents clip, we can draw everything into one
 609             // picture.
 610             if (!paintContext(m_contentLayer->recordContext(), layerBounds))
 611                 return false;
 612             m_contentLayer->checkTextPresence();
 613             // Check for a scrollable iframe and report the scrolling
 614             // limits based on the view size.
 615             if (m_contentLayer->contentIsScrollable()) {
 616                 FrameView* view = layer->renderer()->frame()->view();
 617                 static_cast<ScrollableLayerAndroid*>(m_contentLayer)->setScrollLimits(
 618                     m_position.x(), m_position.y(), view->layoutWidth(), view->layoutHeight());
 619             }
 620         }
 621
 622         LOG("(%x) repaint() on (%.2f,%.2f) contentlayer(%.2f,%.2f,%.2f,%.2f)paintGraphicsLayer called!",
 623             this, m_size.width(), m_size.height(),
 624             m_contentLayer->getPosition().fX,
 625             m_contentLayer->getPosition().fY,
 626             m_contentLayer->getSize().width(),
 627             m_contentLayer->getSize().height());
 628
 629         m_contentLayer->markAsDirty(m_dirtyRegion);
 630         m_dirtyRegion.setEmpty();
 631         m_contentLayer->needsRepaint();
 632         m_needsRepaint = false;
 633
 634         return true;
 635     }
 636     if (m_needsRepaint && m_haveImage && m_newImage) {
 637         // We need to tell the GL thread that we will need to repaint the
 638         // texture. Only do so if we effectively have a new image!
 639         m_contentLayer->markAsDirty(m_dirtyRegion);
 640         m_dirtyRegion.setEmpty();
 641         m_contentLayer->needsRepaint();
 642         m_newImage = false;
 643         m_needsRepaint = false;
 644         return true;
 645     }
 646     return false;
 647 }
 648
 649 bool GraphicsLayerAndroid::paintContext(SkPicture* context,
 650                                         const IntRect& rect)
 651 {
 652     SkAutoPictureRecord arp(context, rect.width(), rect.height());
 653     SkCanvas* canvas = arp.getRecordingCanvas();
 654
 655     if (!canvas)
 656         return false;
 657
 658     PlatformGraphicsContext platformContext(canvas);
 659     GraphicsContext graphicsContext(&platformContext);
 660
 661     paintGraphicsLayerContents(graphicsContext, rect);
 662     return true;
 663 }
 664
 665 void GraphicsLayerAndroid::setNeedsDisplayInRect(const FloatRect& rect)
 666 {
 667     // rect is in the render object coordinates
 668
 669     if (!m_haveImage && !drawsContent()) {
 670         LOG("(%x) setNeedsDisplay(%.2f,%.2f,%.2f,%.2f) doesn't have content, bypass...",
 671             this, rect.x(), rect.y(), rect.width(), rect.height());
 672         return;
 673     }
 674
 675     SkRegion region;
 676     region.setRect(rect.x(), rect.y(),
 677                    rect.x() + rect.width(),
 678                    rect.y() + rect.height());
 679     m_dirtyRegion.op(region, SkRegion::kUnion_Op);
 680
 681     m_needsRepaint = true;
 682     askForSync();
 683 }
 684
 685 void GraphicsLayerAndroid::pauseDisplay(bool state)
 686 {
 687     gPaused = state;
 688     if (gPaused)
 689         gPausedDelay = WTF::currentTime() + 1;
 690 }
 691
 692 bool GraphicsLayerAndroid::addAnimation(const KeyframeValueList& valueList,
 693                                         const IntSize& boxSize,
 694                                         const Animation* anim,
 695                                         const String& keyframesName,
 696                                         double beginTime)
 697 {
 698     if (!anim || anim->isEmptyOrZeroDuration() || valueList.size() < 2)
 699         return false;
 700
 701     bool createdAnimations = false;
 702     if (valueList.property() == AnimatedPropertyWebkitTransform) {
 703         createdAnimations = createTransformAnimationsFromKeyframes(valueList,
 704                                                                    anim,
 705                                                                    keyframesName,
 706                                                                    beginTime,
 707                                                                    boxSize);
 708     } else {
 709         createdAnimations = createAnimationFromKeyframes(valueList,
 710                                                          anim,
 711                                                          keyframesName,
 712                                                          beginTime);
 713     }
 714     if (createdAnimations)
 715         askForSync();
 716     return createdAnimations;
 717 }
 718
 719 bool GraphicsLayerAndroid::createAnimationFromKeyframes(const KeyframeValueList& valueList,
 720      const Animation* animation, const String& keyframesName, double beginTime)
 721 {
 722     bool isKeyframe = valueList.size() > 2;
 723     TLOG("createAnimationFromKeyframes(%d), name(%s) beginTime(%.2f)",
 724         isKeyframe, keyframesName.latin1().data(), beginTime);
 725
 726     switch (valueList.property()) {
 727     case AnimatedPropertyInvalid: break;
 728     case AnimatedPropertyWebkitTransform: break;
 729     case AnimatedPropertyBackgroundColor: break;
 730     case AnimatedPropertyOpacity: {
 731         MLOG("ANIMATEDPROPERTYOPACITY");
 732
 733         KeyframeValueList* operationsList = new KeyframeValueList(AnimatedPropertyOpacity);
 734         for (unsigned int i = 0; i < valueList.size(); i++) {
 735             FloatAnimationValue* originalValue = (FloatAnimationValue*)valueList.at(i);
 736             PassRefPtr<TimingFunction> timingFunction(const_cast<TimingFunction*>(originalValue->timingFunction()));
 737             FloatAnimationValue* value = new FloatAnimationValue(originalValue->keyTime(),
 738                                                                  originalValue->value(),
 739                                                                  timingFunction);
 740             operationsList->insert(value);
 741         }
 742
 743         RefPtr<AndroidOpacityAnimation> anim = AndroidOpacityAnimation::create(animation,
 744                                                                                operationsList,
 745                                                                                beginTime);
 746         if (keyframesName.isEmpty())
 747             anim->setName(propertyIdToString(valueList.property()));
 748         else
 749             anim->setName(keyframesName);
 750
 751         m_contentLayer->addAnimation(anim.release());
 752         needsNotifyClient();
 753         return true;
 754     } break;
 755     }
 756     return false;
 757 }
 758
 759 void GraphicsLayerAndroid::needsNotifyClient()
 760 {
 761     m_needsNotifyClient = true;
 762     askForSync();
 763 }
 764
 765 bool GraphicsLayerAndroid::createTransformAnimationsFromKeyframes(const KeyframeValueList& valueList,
 766                                                                   const Animation* animation,
 767                                                                   const String& keyframesName,
 768                                                                   double beginTime,
 769                                                                   const IntSize& boxSize)
 770 {
 771     ASSERT(valueList.property() == AnimatedPropertyWebkitTransform);
 772     TLOG("createTransformAnimationFromKeyframes, name(%s) beginTime(%.2f)",
 773         keyframesName.latin1().data(), beginTime);
 774
 775     KeyframeValueList* operationsList = new KeyframeValueList(AnimatedPropertyWebkitTransform);
 776     for (unsigned int i = 0; i < valueList.size(); i++) {
 777         TransformAnimationValue* originalValue = (TransformAnimationValue*)valueList.at(i);
 778         PassRefPtr<TimingFunction> timingFunction(const_cast<TimingFunction*>(originalValue->timingFunction()));
 779         TransformAnimationValue* value = new TransformAnimationValue(originalValue->keyTime(),
 780                                                                      originalValue->value(),
 781                                                                      timingFunction);
 782         operationsList->insert(value);
 783     }
 784
 785     RefPtr<AndroidTransformAnimation> anim = AndroidTransformAnimation::create(animation,
 786                                                                                operationsList,
 787                                                                                beginTime);
 788
 789     if (keyframesName.isEmpty())
 790         anim->setName(propertyIdToString(valueList.property()));
 791     else
 792         anim->setName(keyframesName);
 793
 794
 795     m_contentLayer->addAnimation(anim.release());
 796
 797     needsNotifyClient();
 798     return true;
 799 }
 800
 801 void GraphicsLayerAndroid::removeAnimationsForProperty(AnimatedPropertyID anID)
 802 {
 803     TLOG("NRO removeAnimationsForProperty(%d)", anID);
 804     m_contentLayer->removeAnimationsForProperty(anID);
 805     askForSync();
 806 }
 807
 808 void GraphicsLayerAndroid::removeAnimationsForKeyframes(const String& keyframesName)
 809 {
 810     TLOG("NRO removeAnimationsForKeyframes(%s)", keyframesName.latin1().data());
 811     m_contentLayer->removeAnimationsForKeyframes(keyframesName);
 812     askForSync();
 813 }
 814
 815 void GraphicsLayerAndroid::pauseAnimation(const String& keyframesName)
 816 {
 817     TLOG("NRO pauseAnimation(%s)", keyframesName.latin1().data());
 818 }
 819
 820 void GraphicsLayerAndroid::suspendAnimations(double time)
 821 {
 822     TLOG("NRO suspendAnimations(%.2f)", time);
 823 }
 824
 825 void GraphicsLayerAndroid::resumeAnimations()
 826 {
 827     TLOG("NRO resumeAnimations()");
 828 }
 829
 830 void GraphicsLayerAndroid::setContentsToImage(Image* image)
 831 {
 832     TLOG("(%x) setContentsToImage", this, image);
 833     if (image) {
 834         m_haveContents = true;
 835         m_haveImage = true;
 836         m_newImage = true;
 837         m_contentLayer->setContentsImage(image->nativeImageForCurrentFrame());
 838     }
 839     if (m_haveImage && !image)
 840         m_contentLayer->setContentsImage(0);
 841
 842     setNeedsDisplay();
 843     askForSync();
 844 }
 845
 846 void GraphicsLayerAndroid::setContentsToMedia(PlatformLayer* mediaLayer)
 847 {
 848     // Only fullscreen video on Android, so media doesn't get it's own layer.
 849     // We might still have other layers though.
 850     if (m_contentLayer != mediaLayer && mediaLayer) {
 851
 852         // TODO add a copy method to LayerAndroid to sync everything
 853         // copy data from the original content layer to the new one
 854         mediaLayer->setPosition(m_contentLayer->getPosition().fX,
 855                                 m_contentLayer->getPosition().fY);
 856         mediaLayer->setSize(m_contentLayer->getWidth(), m_contentLayer->getHeight());
 857         mediaLayer->setDrawTransform(*m_contentLayer->drawTransform());
 858
 859         mediaLayer->ref();
 860         m_contentLayer->unref();
 861         m_contentLayer = mediaLayer;
 862
 863         // If the parent exists then notify it to re-sync it's children
 864         if (m_parent) {
 865             GraphicsLayerAndroid* parent = static_cast<GraphicsLayerAndroid*>(m_parent);
 866             parent->m_needsSyncChildren = true;
 867         }
 868         m_needsSyncChildren = true;
 869
 870         setNeedsDisplay();
 871         askForSync();
 872     }
 873 }
 874
 875 PlatformLayer* GraphicsLayerAndroid::platformLayer() const
 876 {
 877     LOG("platformLayer");
 878     return m_contentLayer;
 879 }
 880
 881 #ifndef NDEBUG
 882 void GraphicsLayerAndroid::setDebugBackgroundColor(const Color& color)
 883 {
 884 }
 885
 886 void GraphicsLayerAndroid::setDebugBorder(const Color& color, float borderWidth)
 887 {
 888 }
 889 #endif
 890
 891 void GraphicsLayerAndroid::setZPosition(float position)
 892 {
 893     if (position == m_zPosition)
 894         return;
 895     LOG("(%x) setZPosition: %.2f", this, position);
 896     GraphicsLayer::setZPosition(position);
 897     askForSync();
 898 }
 899
 900 void GraphicsLayerAndroid::askForSync()
 901 {
 902     if (!m_client)
 903         return;
 904
 905     if (m_client)
 906         m_client->notifySyncRequired(this);
 907 }
 908
 909 void GraphicsLayerAndroid::syncChildren()
 910 {
 911     if (m_needsSyncChildren) {
 912         m_contentLayer->removeChildren();
 913         LayerAndroid* layer = m_contentLayer;
 914         if (m_foregroundClipLayer) {
 915             m_contentLayer->addChild(m_foregroundClipLayer);
 916             // Use the scrollable content layer as the parent of the children so
 917             // that they move with the content.
 918             layer = m_foregroundLayer;
 919             layer->removeChildren();
 920         }
 921         for (unsigned int i = 0; i < m_children.size(); i++)
 922             layer->addChild(m_children[i]->platformLayer());
 923         m_needsSyncChildren = false;
 924     }
 925 }
 926
 927 void GraphicsLayerAndroid::syncMask()
 928 {
 929     if (m_needsSyncMask) {
 930         if (m_maskLayer) {
 931             LayerAndroid* mask = m_maskLayer->platformLayer();
 932             m_contentLayer->setMaskLayer(mask);
 933         } else
 934             m_contentLayer->setMaskLayer(0);
 935
 936         m_contentLayer->setMasksToBounds(m_masksToBounds);
 937         m_needsSyncMask = false;
 938     }
 939 }
 940
 941 void GraphicsLayerAndroid::syncCompositingState()
 942 {
 943     for (unsigned int i = 0; i < m_children.size(); i++)
 944         m_children[i]->syncCompositingState();
 945
 946     updateScrollingLayers();
 947     updateFixedPosition();
 948     syncChildren();
 949     syncMask();
 950
 951     if (!gPaused || WTF::currentTime() >= gPausedDelay)
 952         repaint();
 953 }
 954
 955 void GraphicsLayerAndroid::notifyClientAnimationStarted()
 956 {
 957     for (unsigned int i = 0; i < m_children.size(); i++)
 958         static_cast<GraphicsLayerAndroid*>(m_children[i])->notifyClientAnimationStarted();
 959
 960     if (m_needsNotifyClient) {
 961         if (client())
 962             client()->notifyAnimationStarted(this, WTF::currentTime());
 963         m_needsNotifyClient = false;
 964     }
 965 }
 966
 967 } // namespace WebCore
 968
 969 #endif // USE(ACCELERATED_COMPOSITING)