| 1 | //======================================================================== |
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| 2 | // |
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| 3 | // AnnotStampImageHelper.h |
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| 4 | // |
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| 5 | // Copyright (C) 2021 Mahmoud Ahmed Khalil <mahmoudkhalil11@gmail.com> |
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| 6 | // Copyright (C) 2021 Albert Astals Cid <aacid@kde.org> |
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| 7 | // |
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| 8 | // Licensed under GPLv2 or later |
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| 9 | // |
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| 10 | //======================================================================== |
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| 11 | |
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| 12 | #ifndef ANNOTSTAMPIMAGEHELPER_H |
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| 13 | #define ANNOTSTAMPIMAGEHELPER_H |
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| 14 | |
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| 15 | #include "Object.h" |
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| 16 | |
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| 17 | class PDFDoc; |
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| 18 | |
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| 19 | enum ColorSpace |
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| 20 | { |
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| 21 | DeviceGray, |
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| 22 | DeviceRGB, |
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| 23 | DeviceCMYK |
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| 24 | }; |
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| 25 | |
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| 26 | /** |
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| 27 | * This class is used only to load Image XObjects into stamp annotations. It takes in |
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| 28 | * the image parameters in its constructors and creates a new Image XObject that gets |
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| 29 | * added to the XRef table, so that the annotations that would like to use it be able |
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| 30 | * to get its ref number. |
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| 31 | * |
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| 32 | * To have transparency in the image, you should first try to create the soft |
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| 33 | * mask of the image, by creating a AnnotStampImageHelper object giving it the soft |
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| 34 | * image data normally. You would then need to pass in the created soft mask Image XObject |
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| 35 | * ref to the actual image you'd like to be created by this helper class. |
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| 36 | */ |
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| 37 | class POPPLER_PRIVATE_EXPORT AnnotStampImageHelper |
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| 38 | { |
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| 39 | public: |
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| 40 | AnnotStampImageHelper(PDFDoc *docA, int widthA, int heightA, ColorSpace colorSpace, int bitsPerComponent, char *data, int dataLength); |
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| 41 | AnnotStampImageHelper(PDFDoc *docA, int widthA, int heightA, ColorSpace colorSpace, int bitsPerComponent, char *data, int dataLength, Ref softMaskRef); |
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| 42 | ~AnnotStampImageHelper() { } |
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| 43 | |
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| 44 | // Returns the ref to the created Image XObject |
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| 45 | Ref getRef() const { return ref; } |
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| 46 | |
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| 47 | // Returns the width of the image |
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| 48 | int getWidth() const { return width; } |
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| 49 | // Returns the height of the image |
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| 50 | int getHeight() const { return height; } |
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| 51 | |
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| 52 | // Removes the created Image XObject as well as its soft mask from the XRef Table |
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| 53 | void removeAnnotStampImageObject(); |
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| 54 | |
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| 55 | private: |
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| 56 | void initialize(PDFDoc *docA, int widthA, int heightA, ColorSpace colorSpace, int bitsPerComponent, char *data, int dataLength); |
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| 57 | |
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| 58 | PDFDoc *doc; |
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| 59 | |
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| 60 | Object imgObj; |
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| 61 | Ref ref; |
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| 62 | Ref sMaskRef; |
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| 63 | |
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| 64 | int width; |
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| 65 | int height; |
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| 66 | }; |
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| 67 | |
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| 68 | #endif |
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| 69 | |
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