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/*
Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies)
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.
*/
#include "config.h"
#include "TextureMapperTile.h"
#include "Image.h"
#include "TextureMapper.h"
namespace WebCore {
class GraphicsLayer;
void TextureMapperTile::updateContents(TextureMapper& textureMapper, Image* image, const IntRect& dirtyRect)
{
IntRect targetRect = enclosingIntRect(m_rect);
targetRect.intersect(dirtyRect);
if (targetRect.isEmpty())
return;
IntPoint sourceOffset = targetRect.location();
// Normalize sourceRect to the buffer's coordinates.
sourceOffset.move(-dirtyRect.x(), -dirtyRect.y());
// Normalize targetRect to the texture's coordinates.
targetRect.move(-m_rect.x(), -m_rect.y());
if (!m_texture) {
m_texture = textureMapper.createTexture();
m_texture->reset(targetRect.size(), image->currentFrameKnownToBeOpaque() ? 0 : BitmapTexture::SupportsAlpha);
}
m_texture->updateContents(image, targetRect, sourceOffset);
}
void TextureMapperTile::updateContents(TextureMapper& textureMapper, GraphicsLayer* sourceLayer, const IntRect& dirtyRect, float scale)
{
IntRect targetRect = enclosingIntRect(m_rect);
targetRect.intersect(dirtyRect);
if (targetRect.isEmpty())
return;
IntPoint sourceOffset = targetRect.location();
// Normalize targetRect to the texture's coordinates.
targetRect.move(-m_rect.x(), -m_rect.y());
if (!m_texture) {
m_texture = textureMapper.createTexture();
m_texture->reset(targetRect.size(), BitmapTexture::SupportsAlpha);
}
m_texture->updateContents(sourceLayer, targetRect, sourceOffset, scale);
}
void TextureMapperTile::paint(TextureMapper& textureMapper, const TransformationMatrix& transform, float opacity, const unsigned exposedEdges)
{
if (texture().get())
textureMapper.drawTexture(*texture().get(), rect(), transform, opacity, exposedEdges);
}
} // namespace WebCore
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