blob: 0084b4234a39fef10f610b5a01f59bb979dc15e5 [file] [log] [blame]
/*
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2007 Alp Toker <alp@atoker.com>
* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
*
* 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 "BitmapImage.h"
#if USE(CAIRO)
#include "AffineTransform.h"
#include "CairoUtilities.h"
#include "Color.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "PlatformContextCairo.h"
#include "ImageBuffer.h"
#include "ImageObserver.h"
#include "RefPtrCairo.h"
#include <cairo.h>
#include <math.h>
#include <wtf/OwnPtr.h>
namespace WebCore {
bool FrameData::clear(bool clearMetadata)
{
if (clearMetadata)
m_haveMetadata = false;
if (m_frame) {
cairo_surface_destroy(m_frame);
m_frame = 0;
return true;
}
return false;
}
BitmapImage::BitmapImage(cairo_surface_t* surface, ImageObserver* observer)
: Image(observer)
, m_currentFrame(0)
, m_frames(0)
, m_frameTimer(0)
, m_repetitionCount(cAnimationNone)
, m_repetitionCountStatus(Unknown)
, m_repetitionsComplete(0)
, m_decodedSize(0)
, m_frameCount(1)
, m_isSolidColor(false)
, m_checkedForSolidColor(false)
, m_animationFinished(true)
, m_allDataReceived(true)
, m_haveSize(true)
, m_sizeAvailable(true)
, m_haveFrameCount(true)
{
initPlatformData();
// TODO: check to be sure this is an image surface
int width = cairo_image_surface_get_width(surface);
int height = cairo_image_surface_get_height(surface);
m_decodedSize = width * height * 4;
m_size = IntSize(width, height);
m_frames.grow(1);
m_frames[0].m_frame = surface;
m_frames[0].m_hasAlpha = cairo_surface_get_content(surface) != CAIRO_CONTENT_COLOR;
m_frames[0].m_haveMetadata = true;
checkForSolidColor();
}
void BitmapImage::draw(GraphicsContext* context, const FloatRect& dst, const FloatRect& src, ColorSpace styleColorSpace, CompositeOperator op)
{
FloatRect srcRect(src);
FloatRect dstRect(dst);
if (dstRect.width() == 0.0f || dstRect.height() == 0.0f ||
srcRect.width() == 0.0f || srcRect.height() == 0.0f)
return;
startAnimation();
cairo_surface_t* image = frameAtIndex(m_currentFrame);
if (!image) // If it's too early we won't have an image yet.
return;
if (mayFillWithSolidColor()) {
fillWithSolidColor(context, dstRect, solidColor(), styleColorSpace, op);
return;
}
context->save();
// Set the compositing operation.
if (op == CompositeSourceOver && !frameHasAlphaAtIndex(m_currentFrame))
context->setCompositeOperation(CompositeCopy);
else
context->setCompositeOperation(op);
context->platformContext()->drawSurfaceToContext(image, dstRect, srcRect, context);
context->restore();
if (imageObserver())
imageObserver()->didDraw(this);
}
void Image::drawPattern(GraphicsContext* context, const FloatRect& tileRect, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace colorSpace, CompositeOperator op, const FloatRect& destRect)
{
cairo_surface_t* image = nativeImageForCurrentFrame();
if (!image) // If it's too early we won't have an image yet.
return;
cairo_t* cr = context->platformContext()->cr();
drawPatternToCairoContext(cr, image, size(), tileRect, patternTransform, phase, toCairoOperator(op), destRect);
if (imageObserver())
imageObserver()->didDraw(this);
}
void BitmapImage::checkForSolidColor()
{
m_isSolidColor = false;
m_checkedForSolidColor = true;
if (frameCount() > 1)
return;
cairo_surface_t* frameSurface = frameAtIndex(0);
if (!frameSurface)
return;
ASSERT(cairo_surface_get_type(frameSurface) == CAIRO_SURFACE_TYPE_IMAGE);
int width = cairo_image_surface_get_width(frameSurface);
int height = cairo_image_surface_get_height(frameSurface);
if (width != 1 || height != 1)
return;
unsigned* pixelColor = reinterpret_cast<unsigned*>(cairo_image_surface_get_data(frameSurface));
m_solidColor = colorFromPremultipliedARGB(*pixelColor);
m_isSolidColor = true;
}
}
#endif // USE(CAIRO)