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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "config.h" | 5 #include "config.h" |
6 | 6 |
7 #include "cc/scrollbar_layer.h" | 7 #include "cc/scrollbar_layer.h" |
8 | 8 |
9 #include "CCLayerTreeHost.h" | 9 #include "CCLayerTreeHost.h" |
10 #include "CCScrollbarLayerImpl.h" | 10 #include "CCScrollbarLayerImpl.h" |
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212 void ScrollbarLayerChromium::updatePart(CachingBitmapCanvasLayerTextureUpdater*
painter, LayerTextureUpdater::Texture* texture, const IntRect& rect, CCTextureUp
dateQueue& queue, CCRenderingStats& stats) | 212 void ScrollbarLayerChromium::updatePart(CachingBitmapCanvasLayerTextureUpdater*
painter, LayerTextureUpdater::Texture* texture, const IntRect& rect, CCTextureUp
dateQueue& queue, CCRenderingStats& stats) |
213 { | 213 { |
214 // Skip painting and uploading if there are no invalidations and | 214 // Skip painting and uploading if there are no invalidations and |
215 // we already have valid texture data. | 215 // we already have valid texture data. |
216 if (texture->texture()->haveBackingTexture() | 216 if (texture->texture()->haveBackingTexture() |
217 && texture->texture()->size() == rect.size() | 217 && texture->texture()->size() == rect.size() |
218 && m_updateRect.isEmpty()) | 218 && m_updateRect.isEmpty()) |
219 return; | 219 return; |
220 | 220 |
221 // We should always have enough memory for UI. | 221 // We should always have enough memory for UI. |
222 ASSERT(texture->texture()->canAcquireBackingTexture()); | 222 DCHECK(texture->texture()->canAcquireBackingTexture()); |
223 if (!texture->texture()->canAcquireBackingTexture()) | 223 if (!texture->texture()->canAcquireBackingTexture()) |
224 return; | 224 return; |
225 | 225 |
226 // Paint and upload the entire part. | 226 // Paint and upload the entire part. |
227 float widthScale = static_cast<float>(contentBounds().width()) / bounds().wi
dth(); | 227 float widthScale = static_cast<float>(contentBounds().width()) / bounds().wi
dth(); |
228 float heightScale = static_cast<float>(contentBounds().height()) / bounds().
height(); | 228 float heightScale = static_cast<float>(contentBounds().height()) / bounds().
height(); |
229 IntRect paintedOpaqueRect; | 229 IntRect paintedOpaqueRect; |
230 painter->prepareToUpdate(rect, rect.size(), widthScale, heightScale, painted
OpaqueRect, stats); | 230 painter->prepareToUpdate(rect, rect.size(), widthScale, heightScale, painted
OpaqueRect, stats); |
231 if (!painter->pixelsDidChange() && texture->texture()->haveBackingTexture())
{ | 231 if (!painter->pixelsDidChange() && texture->texture()->haveBackingTexture())
{ |
232 TRACE_EVENT_INSTANT0("cc","ScrollbarLayerChromium::updatePart no texture
upload needed"); | 232 TRACE_EVENT_INSTANT0("cc","ScrollbarLayerChromium::updatePart no texture
upload needed"); |
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275 updatePart(m_foreTrackUpdater.get(), m_foreTrack.get(), contentRect, que
ue, stats); | 275 updatePart(m_foreTrackUpdater.get(), m_foreTrack.get(), contentRect, que
ue, stats); |
276 | 276 |
277 // Consider the thumb to be at the origin when painting. | 277 // Consider the thumb to be at the origin when painting. |
278 WebKit::WebRect thumbRect = m_geometry->thumbRect(m_scrollbar.get()); | 278 WebKit::WebRect thumbRect = m_geometry->thumbRect(m_scrollbar.get()); |
279 IntRect originThumbRect = layerRectToContentRect(WebKit::WebRect(0, 0, thumb
Rect.width, thumbRect.height)); | 279 IntRect originThumbRect = layerRectToContentRect(WebKit::WebRect(0, 0, thumb
Rect.width, thumbRect.height)); |
280 if (!originThumbRect.isEmpty()) | 280 if (!originThumbRect.isEmpty()) |
281 updatePart(m_thumbUpdater.get(), m_thumb.get(), originThumbRect, queue,
stats); | 281 updatePart(m_thumbUpdater.get(), m_thumb.get(), originThumbRect, queue,
stats); |
282 } | 282 } |
283 | 283 |
284 } | 284 } |
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