CCSharedQuadState.cpp   [plain text]

/*
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#include "config.h"

#include "cc/CCSharedQuadState.h"

namespace WebCore {

PassOwnPtr<CCSharedQuadState> CCSharedQuadState::create(const TransformationMatrix& quadTransform, const TransformationMatrix& layerTransform, const IntRect& layerRect, const IntRect& clipRect, float opacity, bool opaque)
{
    return adoptPtr(new CCSharedQuadState(quadTransform, layerTransform, layerRect, clipRect, opacity, opaque));
}

CCSharedQuadState::CCSharedQuadState(const TransformationMatrix& quadTransform, const TransformationMatrix& layerTransform, const IntRect& layerRect, const IntRect& clipRect, float opacity, bool opaque)
    : m_quadTransform(quadTransform)
    , m_layerTransform(layerTransform)
    , m_layerRect(layerRect)
    , m_clipRect(clipRect)
    , m_opacity(opacity)
    , m_opaque(opaque)
{
}

bool CCSharedQuadState::isLayerAxisAlignedIntRect() const
{
    // Note: this doesn't consider window or projection matrices.
    // Assume that they're orthonormal and have integer scales and translations.
    FloatQuad quad = quadTransform().mapQuad(FloatQuad(layerRect()));
    return quad.isRectilinear() && quad.boundingBox().isExpressibleAsIntRect();
}

}