ext/scintilla/src/XPM.h

   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 #ifdef SCI_NAMESPACE
  12 namespace Scintilla {
  13 #endif
  14
  15 /**
  16  * Hold a pixmap in XPM format.
  17  */
  18 class XPM {
  19         int height;
  20         int width;
  21         int nColours;
  22         std::vector<unsigned char> pixels;
  23         ColourDesired colourCodeTable[256];
  24         char codeTransparent;
  25         ColourDesired ColourFromCode(int ch) const;
  26         void FillRun(Surface *surface, int code, int startX, int y, int x) const;
  27 public:
  28         explicit XPM(const char *textForm);
  29         explicit XPM(const char *const *linesForm);
  30         ~XPM();
  31         void Init(const char *textForm);
  32         void Init(const char *const *linesForm);
  33         /// Decompose image into runs and use FillRectangle for each run
  34         void Draw(Surface *surface, const PRectangle &rc);
  35         int GetHeight() const { return height; }
  36         int GetWidth() const { return width; }
  37         void PixelAt(int x, int y, ColourDesired &colour, bool &transparent) const;
  38 private:
  39         static std::vector<const char *>LinesFormFromTextForm(const char *textForm);
  40 };
  41
  42 /**
  43  * A translucent image stored as a sequence of RGBA bytes.
  44  */
  45 class RGBAImage {
  46         int height;
  47         int width;
  48         float scale;
  49         std::vector<unsigned char> pixelBytes;
  50 public:
  51         RGBAImage(int width_, int height_, float scale_, const unsigned char *pixels_);
  52         explicit RGBAImage(const XPM &xpm);
  53         // Deleted so RGBAImage objects can not be copied.
  54         RGBAImage(const RGBAImage &) = delete;
  55         RGBAImage &operator=(const RGBAImage &) = delete;
  56         virtual ~RGBAImage();
  57         int GetHeight() const { return height; }
  58         int GetWidth() const { return width; }
  59         float GetScale() const { return scale; }
  60         float GetScaledHeight() const { return height / scale; }
  61         float GetScaledWidth() const { return width / scale; }
  62         int CountBytes() const;
  63         const unsigned char *Pixels() const;
  64         void SetPixel(int x, int y, ColourDesired colour, int alpha=0xff);
  65 };
  66
  67 /**
  68  * A collection of RGBAImage pixmaps indexed by integer id.
  69  */
  70 class RGBAImageSet {
  71         typedef std::map<int, std::unique_ptr<RGBAImage>> ImageMap;
  72         ImageMap images;
  73         mutable int height;     ///< Memorize largest height of the set.
  74         mutable int width;      ///< Memorize largest width of the set.
  75 public:
  76         RGBAImageSet();
  77         ~RGBAImageSet();
  78         /// Remove all images.
  79         void Clear();
  80         /// Add an image.
  81         void Add(int ident, RGBAImage *image);
  82         /// Get image by id.
  83         RGBAImage *Get(int ident);
  84         /// Give the largest height of the set.
  85         int GetHeight() const;
  86         /// Give the largest width of the set.
  87         int GetWidth() const;
  88 };
  89
  90 #ifdef SCI_NAMESPACE
  91 }
  92 #endif
  93
  94 #endif