1 // Scintilla source code edit control 2 /** @file XPM.h 3 ** Define a classes to hold image data in the X Pixmap (XPM) and RGBA formats. 4 **/ 5 // Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org> 6 // The License.txt file describes the conditions under which this software may be distributed. 7 8 #ifndef XPM_H 9 #define XPM_H 10 11 namespace Scintilla { 12 13 /** 14 * Hold a pixmap in XPM format. 15 */ 16 class XPM { 17 int height=1; 18 int width=1; 19 int nColours=1; 20 std::vector<unsigned char> pixels; 21 ColourDesired colourCodeTable[256]; 22 char codeTransparent=' '; 23 ColourDesired ColourFromCode(int ch) const noexcept; 24 void FillRun(Surface *surface, int code, int startX, int y, int x) const; 25 public: 26 explicit XPM(const char *textForm); 27 explicit XPM(const char *const *linesForm); 28 XPM(const XPM &) = default; 29 XPM(XPM &&) noexcept = default; 30 XPM &operator=(const XPM &) = default; 31 XPM &operator=(XPM &&) noexcept = default; 32 ~XPM(); 33 void Init(const char *textForm); 34 void Init(const char *const *linesForm); 35 /// Decompose image into runs and use FillRectangle for each run 36 void Draw(Surface *surface, const PRectangle &rc); GetHeight()37 int GetHeight() const noexcept { return height; } GetWidth()38 int GetWidth() const noexcept { return width; } 39 void PixelAt(int x, int y, ColourDesired &colour, bool &transparent) const noexcept; 40 private: 41 static std::vector<const char *>LinesFormFromTextForm(const char *textForm); 42 }; 43 44 /** 45 * A translucent image stored as a sequence of RGBA bytes. 46 */ 47 class RGBAImage { 48 int height; 49 int width; 50 float scale; 51 std::vector<unsigned char> pixelBytes; 52 public: 53 static constexpr size_t bytesPerPixel = 4; 54 RGBAImage(int width_, int height_, float scale_, const unsigned char *pixels_); 55 explicit RGBAImage(const XPM &xpm); 56 RGBAImage(const RGBAImage &) = default; 57 RGBAImage(RGBAImage &&) noexcept = default; 58 RGBAImage &operator=(const RGBAImage &) = default; 59 RGBAImage &operator=(RGBAImage &&) noexcept = default; 60 virtual ~RGBAImage(); GetHeight()61 int GetHeight() const noexcept { return height; } GetWidth()62 int GetWidth() const noexcept { return width; } GetScale()63 float GetScale() const noexcept { return scale; } GetScaledHeight()64 float GetScaledHeight() const noexcept { return height / scale; } GetScaledWidth()65 float GetScaledWidth() const noexcept { return width / scale; } 66 int CountBytes() const noexcept; 67 const unsigned char *Pixels() const noexcept; 68 void SetPixel(int x, int y, ColourDesired colour, int alpha) noexcept; 69 static void BGRAFromRGBA(unsigned char *pixelsBGRA, const unsigned char *pixelsRGBA, size_t count) noexcept; 70 }; 71 72 /** 73 * A collection of RGBAImage pixmaps indexed by integer id. 74 */ 75 class RGBAImageSet { 76 typedef std::map<int, std::unique_ptr<RGBAImage>> ImageMap; 77 ImageMap images; 78 mutable int height; ///< Memorize largest height of the set. 79 mutable int width; ///< Memorize largest width of the set. 80 public: 81 RGBAImageSet(); 82 // Deleted so RGBAImageSet objects can not be copied. 83 RGBAImageSet(const RGBAImageSet &) = delete; 84 RGBAImageSet(RGBAImageSet &&) = delete; 85 RGBAImageSet &operator=(const RGBAImageSet &) = delete; 86 RGBAImageSet &operator=(RGBAImageSet &&) = delete; 87 ~RGBAImageSet(); 88 /// Remove all images. 89 void Clear() noexcept; 90 /// Add an image. 91 void Add(int ident, RGBAImage *image); 92 /// Get image by id. 93 RGBAImage *Get(int ident); 94 /// Give the largest height of the set. 95 int GetHeight() const; 96 /// Give the largest width of the set. 97 int GetWidth() const; 98 }; 99 100 } 101 102 #endif 103