The Tor Browser / file comparison
comparison: widget/windows/nsImageClipboard.h
widget/windows/nsImageClipboard.h
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- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:51fba0d8c53f |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef nsImageClipboard_h | |
| 7 #define nsImageClipboard_h | |
| 8 | |
| 9 /* Things To Do 11/8/00 | |
| 10 | |
| 11 Check image metrics, can we support them? Do we need to? | |
| 12 Any other render format? HTML? | |
| 13 | |
| 14 */ | |
| 15 | |
| 16 #include "nsError.h" | |
| 17 #include <windows.h> | |
| 18 | |
| 19 #include "nsCOMPtr.h" | |
| 20 #include "imgIContainer.h" | |
| 21 #include "nsIInputStream.h" | |
| 22 | |
| 23 | |
| 24 // | |
| 25 // nsImageToClipboard | |
| 26 // | |
| 27 // A utility class that takes an imgIContainer and does all the bitmap magic | |
| 28 // to allow us to put it on the clipboard | |
| 29 // | |
| 30 class nsImageToClipboard | |
| 31 { | |
| 32 public: | |
| 33 nsImageToClipboard(imgIContainer* aInImage, bool aWantDIBV5 = true); | |
| 34 ~nsImageToClipboard(); | |
| 35 | |
| 36 // Call to get the actual bits that go on the clipboard. If |nullptr|, the | |
| 37 // setup operations have failed. | |
| 38 // | |
| 39 // NOTE: The caller owns the handle and must delete it with ::GlobalRelease() | |
| 40 nsresult GetPicture ( HANDLE* outBits ) ; | |
| 41 | |
| 42 private: | |
| 43 | |
| 44 // Computes # of bytes needed by a bitmap with the specified attributes. | |
| 45 int32_t CalcSize(int32_t aHeight, int32_t aColors, WORD aBitsPerPixel, int32_t aSpanBytes); | |
| 46 int32_t CalcSpanLength(uint32_t aWidth, uint32_t aBitCount); | |
| 47 | |
| 48 // Do the work | |
| 49 nsresult CreateFromImage ( imgIContainer* inImage, HANDLE* outBitmap ); | |
| 50 | |
| 51 nsCOMPtr<imgIContainer> mImage; // the image we're working with | |
| 52 bool mWantDIBV5; | |
| 53 | |
| 54 }; // class nsImageToClipboard | |
| 55 | |
| 56 | |
| 57 struct bitFields { | |
| 58 uint32_t red; | |
| 59 uint32_t green; | |
| 60 uint32_t blue; | |
| 61 uint8_t redLeftShift; | |
| 62 uint8_t redRightShift; | |
| 63 uint8_t greenLeftShift; | |
| 64 uint8_t greenRightShift; | |
| 65 uint8_t blueLeftShift; | |
| 66 uint8_t blueRightShift; | |
| 67 }; | |
| 68 | |
| 69 // | |
| 70 // nsImageFromClipboard | |
| 71 // | |
| 72 // A utility class that takes a DIB from the win32 clipboard and does | |
| 73 // all the bitmap magic to convert it to a PNG or a JPEG in the form of a nsIInputStream | |
| 74 // | |
| 75 class nsImageFromClipboard | |
| 76 { | |
| 77 public: | |
| 78 nsImageFromClipboard () ; | |
| 79 ~nsImageFromClipboard ( ) ; | |
| 80 | |
| 81 // Retrieve the newly created image | |
| 82 nsresult GetEncodedImageStream (unsigned char * aClipboardData, const char * aMIMEFormat, nsIInputStream** outImage); | |
| 83 | |
| 84 private: | |
| 85 | |
| 86 void InvertRows(unsigned char * aInitialBuffer, uint32_t aSizeOfBuffer, uint32_t aNumBytesPerRow); | |
| 87 nsresult ConvertColorBitMap(unsigned char * aInputBuffer, PBITMAPINFO pBitMapInfo, unsigned char * aOutBuffer); | |
| 88 void CalcBitmask(uint32_t aMask, uint8_t& aBegin, uint8_t& aLength); | |
| 89 void CalcBitShift(bitFields * aColorMask); | |
| 90 | |
| 91 }; // nsImageFromClipboard | |
| 92 | |
| 93 #endif |
