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/*
* Copyright (C) 2006 Dirk Mueller <mueller@kde.org>
* Copyright (C) 2006 Zack Rusin <zack@kde.org>
* Copyright (C) 2006 Simon Hausmann <hausmann@kde.org>
* Copyright (C) 2007 Ryan Leavengood <leavengood@gmail.com>
* Copyright (C) 2008 Andrea Anzani <andrea.anzani@gmail.com>
* Copyright (C) 2010 Stephan Aßmus <superstippi@gmx.de>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Image.h"
#include "BitmapImage.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "ImageObserver.h"
#include "NotImplemented.h"
#include "PlatformString.h"
#include "SharedBuffer.h"
#include "TransformationMatrix.h"
#include <Application.h>
#include <Bitmap.h>
#include <View.h>
// This function loads resources from WebKit
Vector<char> loadResourceIntoArray(const char*);
namespace WebCore {
bool FrameData::clear(bool clearMetadata)
{
if (clearMetadata)
m_haveMetadata = false;
if (m_frame) {
delete m_frame;
m_frame = 0;
m_duration = 0.0f;
m_hasAlpha = true;
return true;
}
return false;
}
WTF::PassRefPtr<Image> Image::loadPlatformResource(const char* name)
{
Vector<char> array = loadResourceIntoArray(name);
WTF::PassRefPtr<BitmapImage> image = BitmapImage::create();
RefPtr<SharedBuffer> buffer = SharedBuffer::create(array.data(), array.size());
image->setData(buffer, true);
return image;
}
void BitmapImage::initPlatformData()
{
}
void BitmapImage::invalidatePlatformData()
{
}
// Drawing Routines
void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& dst, const FloatRect& src, ColorSpace styleColorSpace, CompositeOperator op)
{
if (!m_source.initialized())
return;
// Spin the animation to the correct frame before we try to draw it, so we
// don't draw an old frame and then immediately need to draw a newer one,
// causing flicker and wasting CPU.
startAnimation();
BBitmap* image = nativeImageForCurrentFrame();
if (!image || !image->IsValid()) // If the image hasn't fully loaded.
return;
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, dst, solidColor(), styleColorSpace, op);
return;
}
ctxt->save();
ctxt->setCompositeOperation(op);
BRect srcRect(src);
BRect dstRect(dst);
// Test using example site at
// http://www.meyerweb.com/eric/css/edge/complexspiral/demo.html
ctxt->platformContext()->SetDrawingMode(B_OP_ALPHA);
ctxt->platformContext()->DrawBitmapAsync(image, srcRect, dstRect);
ctxt->restore();
if (imageObserver())
imageObserver()->didDraw(this);
}
void Image::drawPattern(GraphicsContext* context, const FloatRect& tileRect, const AffineTransform& patternTransform, const FloatPoint& phase, ColorSpace, CompositeOperator op, const FloatRect& dstRect)
{
BBitmap* image = nativeImageForCurrentFrame();
if (!image || !image->IsValid()) // If the image hasn't fully loaded.
return;
// Figure out if the image has any alpha transparency, we can use faster drawing if not
bool hasAlpha = false;
uint8* bits = reinterpret_cast<uint8*>(image->Bits());
uint32 width = image->Bounds().IntegerWidth() + 1;
uint32 height = image->Bounds().IntegerHeight() + 1;
uint32 bytesPerRow = image->BytesPerRow();
for (uint32 y = 0; y < height && !hasAlpha; y++) {
uint8* p = bits;
for (uint32 x = 0; x < width && !hasAlpha; x++) {
hasAlpha = p[3] < 255;
p += 4;
}
bits += bytesPerRow;
}
context->save();
if (hasAlpha)
context->platformContext()->SetDrawingMode(B_OP_ALPHA);
else
context->platformContext()->SetDrawingMode(B_OP_COPY);
context->clip(enclosingIntRect(dstRect));
float currentW = phase.x();
BRect bTileRect(tileRect);
while (currentW < dstRect.x() + dstRect.width()) {
float currentH = phase.y();
while (currentH < dstRect.y() + dstRect.height()) {
BRect bDstRect(currentW, currentH, currentW + width - 1, currentH + height - 1);
context->platformContext()->DrawBitmapAsync(image, bTileRect, bDstRect);
currentH += height;
}
currentW += width;
}
context->restore();
if (imageObserver())
imageObserver()->didDraw(this);
}
void BitmapImage::checkForSolidColor()
{
m_isSolidColor = false;
m_checkedForSolidColor = true;
if (frameCount() > 1)
return;
BBitmap* image = getBBitmap();
if (!image || !image->Bounds().IsValid()
|| image->Bounds().IntegerWidth() > 0 || image->Bounds().IntegerHeight() > 0) {
return;
}
m_isSolidColor = true;
uint8* bits = reinterpret_cast<uint8*>(image->Bits());
m_solidColor = Color(bits[2], bits[1], bits[0], bits[3]);
}
BBitmap* BitmapImage::getBBitmap() const
{
return const_cast<BitmapImage*>(this)->frameAtIndex(0);
}
} // namespace WebCore
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