1 /*
2 * Copyright (C) 2008 Apple Computer, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "GeneratedImage.h"
28
29 #include "FloatRect.h"
30 #include "GraphicsContext.h"
31 #include "ImageBuffer.h"
32
33 using namespace std;
34
35 namespace WebCore {
36
draw(GraphicsContext * context,const FloatRect & dstRect,const FloatRect & srcRect,CompositeOperator compositeOp)37 void GeneratedImage::draw(GraphicsContext* context, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator compositeOp)
38 {
39 context->save();
40 context->setCompositeOperation(compositeOp);
41 context->clip(dstRect);
42 context->translate(dstRect.x(), dstRect.y());
43 if (dstRect.size() != srcRect.size())
44 context->scale(FloatSize(dstRect.width() / srcRect.width(), dstRect.height() / srcRect.height()));
45 context->translate(-srcRect.x(), -srcRect.y());
46 context->fillRect(FloatRect(FloatPoint(), m_size), *m_generator.get());
47 context->restore();
48 }
49
drawPattern(GraphicsContext * context,const FloatRect & srcRect,const TransformationMatrix & patternTransform,const FloatPoint & phase,CompositeOperator compositeOp,const FloatRect & destRect)50 void GeneratedImage::drawPattern(GraphicsContext* context, const FloatRect& srcRect, const TransformationMatrix& patternTransform,
51 const FloatPoint& phase, CompositeOperator compositeOp, const FloatRect& destRect)
52 {
53 // Create a BitmapImage and call drawPattern on it.
54 auto_ptr<ImageBuffer> imageBuffer = ImageBuffer::create(m_size, false);
55 ASSERT(imageBuffer.get());
56
57 // Fill with the gradient.
58 GraphicsContext* graphicsContext = imageBuffer->context();
59 graphicsContext->fillRect(FloatRect(FloatPoint(), m_size), *m_generator.get());
60
61 // Grab the final image from the image buffer.
62 Image* bitmap = imageBuffer->image();
63
64 // Now just call drawTiled on that image.
65 bitmap->drawPattern(context, srcRect, patternTransform, phase, compositeOp, destRect);
66 }
67
68 }
69