diff options
Diffstat (limited to 'src/3rdparty/webkit/WebCore/platform/image-decoders/cairo/ImageDecoderCairo.cpp')
-rw-r--r-- | src/3rdparty/webkit/WebCore/platform/image-decoders/cairo/ImageDecoderCairo.cpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/platform/image-decoders/cairo/ImageDecoderCairo.cpp b/src/3rdparty/webkit/WebCore/platform/image-decoders/cairo/ImageDecoderCairo.cpp new file mode 100644 index 0000000..c53eabd --- /dev/null +++ b/src/3rdparty/webkit/WebCore/platform/image-decoders/cairo/ImageDecoderCairo.cpp @@ -0,0 +1,124 @@ +/* + * Copyright (C) 2006 Apple Computer, Inc. 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 "ImageDecoder.h" + +#include <cairo.h> + +namespace WebCore { + +RGBA32Buffer::RGBA32Buffer() + : m_hasAlpha(false) + , m_status(FrameEmpty) + , m_duration(0) + , m_disposalMethod(DisposeNotSpecified) +{ +} + +void RGBA32Buffer::clear() +{ + m_bytes.clear(); + m_status = FrameEmpty; + // NOTE: Do not reset other members here; clearFrameBufferCache() + // calls this to free the bitmap data, but other functions like + // initFrameBuffer() and frameComplete() may still need to read + // other metadata out of this frame later. +} + +void RGBA32Buffer::zeroFill() +{ + m_bytes.fill(0); + m_hasAlpha = true; +} + +void RGBA32Buffer::copyBitmapData(const RGBA32Buffer& other) +{ + if (this == &other) + return; + + m_bytes = other.m_bytes; + m_size = other.m_size; + setHasAlpha(other.m_hasAlpha); +} + +bool RGBA32Buffer::setSize(int newWidth, int newHeight) +{ + // NOTE: This has no way to check for allocation failure if the + // requested size was too big... + m_bytes.resize(newWidth * newHeight); + m_size = IntSize(newWidth, newHeight); + + // Zero the image. + zeroFill(); + + return true; +} + +NativeImagePtr RGBA32Buffer::asNewNativeImage() const +{ + return cairo_image_surface_create_for_data( + reinterpret_cast<unsigned char*>(const_cast<PixelData*>( + m_bytes.data())), CAIRO_FORMAT_ARGB32, width(), height(), + width() * sizeof(PixelData)); +} + +bool RGBA32Buffer::hasAlpha() const +{ + return m_hasAlpha; +} + +void RGBA32Buffer::setHasAlpha(bool alpha) +{ + m_hasAlpha = alpha; +} + +void RGBA32Buffer::setStatus(FrameStatus status) +{ + m_status = status; +} + +RGBA32Buffer& RGBA32Buffer::operator=(const RGBA32Buffer& other) +{ + if (this == &other) + return *this; + + copyBitmapData(other); + setRect(other.rect()); + setStatus(other.status()); + setDuration(other.duration()); + setDisposalMethod(other.disposalMethod()); + return *this; +} + +int RGBA32Buffer::width() const { + return m_size.width(); +} + +int RGBA32Buffer::height() const { + return m_size.height(); +} + +} // namespace WebCore |