mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Attributes.h"
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#include "mozilla/ReentrantMonitor.h"
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#include "imgIEncoder.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "ICOFileHeaders.h"
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class nsBMPEncoder;
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class nsPNGEncoder;
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#define NS_ICOENCODER_CID \
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{ /*92AE3AB2-8968-41B1-8709-B6123BCEAF21 */ \
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0x92ae3ab2, \
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0x8968, \
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0x41b1, \
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{0x87, 0x09, 0xb6, 0x12, 0x3b, 0Xce, 0xaf, 0x21} \
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}
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// Provides ICO encoding functionality. Use InitFromData() to do the
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// encoding. See that function definition for encoding options.
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class nsICOEncoder MOZ_FINAL : public imgIEncoder
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{
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typedef mozilla::ReentrantMonitor ReentrantMonitor;
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_IMGIENCODER
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NS_DECL_NSIINPUTSTREAM
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NS_DECL_NSIASYNCINPUTSTREAM
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nsICOEncoder();
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~nsICOEncoder();
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// Obtains the width of the icon directory entry
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uint32_t GetRealWidth() const
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{
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return mICODirEntry.mWidth == 0 ? 256 : mICODirEntry.mWidth;
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}
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// Obtains the height of the icon directory entry
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uint32_t GetRealHeight() const
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{
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return mICODirEntry.mHeight == 0 ? 256 : mICODirEntry.mHeight;
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}
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protected:
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nsresult ParseOptions(const nsAString& aOptions, uint32_t* bpp,
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bool *usePNG);
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void NotifyListener();
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// Initializes the icon file header mICOFileHeader
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void InitFileHeader();
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// Initializes the icon directory info header mICODirEntry
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void InitInfoHeader(uint32_t aBPP, uint8_t aWidth, uint8_t aHeight);
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// Encodes the icon file header mICOFileHeader
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void EncodeFileHeader();
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// Encodes the icon directory info header mICODirEntry
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void EncodeInfoHeader();
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// Obtains the current offset filled up to for the image buffer
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inline int32_t GetCurrentImageBufferOffset()
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{
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return static_cast<int32_t>(mImageBufferCurr - mImageBufferStart);
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}
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// Holds either a PNG or a BMP depending on the encoding options specified
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// or if no encoding options specified will use the default (PNG)
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nsCOMPtr<imgIEncoder> mContainedEncoder;
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// These headers will always contain endian independent stuff.
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// Don't trust the width and height of mICODirEntry directly,
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// instead use the accessors GetRealWidth() and GetRealHeight().
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mozilla::image::IconFileHeader mICOFileHeader;
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mozilla::image::IconDirEntry mICODirEntry;
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// Keeps track of the start of the image buffer
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uint8_t* mImageBufferStart;
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// Keeps track of the current position in the image buffer
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uint8_t* mImageBufferCurr;
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// Keeps track of the image buffer size
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uint32_t mImageBufferSize;
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// Keeps track of the number of bytes in the image buffer which are read
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uint32_t mImageBufferReadPoint;
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// Stores true if the image is done being encoded
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bool mFinished;
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// Stores true if the contained image is a PNG
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bool mUsePNG;
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nsCOMPtr<nsIInputStreamCallback> mCallback;
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nsCOMPtr<nsIEventTarget> mCallbackTarget;
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uint32_t mNotifyThreshold;
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};
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