source/texk/web2c/luatexdir/luafontloader/fontforge/inc/gimage.h

   1 /* Copyright (C) 2000-2008 by George Williams */
   2 /*
   3  * Redistribution and use in source and binary forms, with or without
   4  * modification, are permitted provided that the following conditions are met:
   5
   6  * Redistributions of source code must retain the above copyright notice, this
   7  * list of conditions and the following disclaimer.
   8
   9  * Redistributions in binary form must reproduce the above copyright notice,
  10  * this list of conditions and the following disclaimer in the documentation
  11  * and/or other materials provided with the distribution.
  12
  13  * The name of the author may not be used to endorse or promote products
  14  * derived from this software without specific prior written permission.
  15
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27 #ifndef _GIMAGE_H
  28 #define _GIMAGE_H
  29 #include "basics.h"
  30
  31 typedef uint32 Color;
  32
  33 #define COLOR_UNKNOWN           ((Color) 0xffffffff)
  34 #define COLOR_TRANSPARENT       ((Color) 0xffffffff)
  35 #define COLOR_DEFAULT           ((Color) 0xfffffffe)
  36 #define COLOR_CREATE(r,g,b)     (((r)<<16) | ((g)<<8) | (b))
  37 #define COLOR_ALPHA(col)        (((col)>>24))
  38 #define COLOR_RED(col)          (((col)>>16) & 0xff)
  39 #define COLOR_GREEN(col)        (((col)>>8) & 0xff)
  40 #define COLOR_BLUE(col)         ((col)&0xff)
  41
  42 struct hslrgb {
  43     double h,s,l,v;
  44     double r,g,b;
  45     uint8 rgb, hsl, hsv;
  46 };
  47
  48 typedef struct clut {
  49     int16 clut_len;
  50     unsigned int is_grey: 1;
  51     uint32 trans_index;         /* will be ignored for cluts in images, use base->trans instead */
  52     Color clut[256];
  53 } GClut;
  54
  55 typedef struct revcmap RevCMap;
  56
  57 enum image_type { it_mono, it_bitmap=it_mono, it_index, it_true, it_rgba };
  58
  59 struct _GImage {
  60 /* Format: bitmaps are stored with the most significant bit first in byte units
  61             indexed    images are stored in byte units
  62             true color images are stored in 4 byte units, 0,red,green,blue
  63             rgba       images are stored in 4 byte units, alpha,red,green blue
  64 */
  65     unsigned int image_type: 2;
  66     int16 delay;                /* for animated GIFs, delay to next frame */
  67     int32 width, height;
  68     int32 bytes_per_line;
  69     uint8 *data;
  70     GClut *clut;
  71     Color trans;                /* PNG supports more than one transparent color, we don't */
  72                                 /* for non-true color images this is the index, not a color */
  73 };
  74
  75 /* We deal with 1 bit, 8 bit and 32 bit images internal. 1 bit images may have*/
  76 /*  a clut (if they don't assume bw, 0==black, 1==white), 8 bit must have a */
  77 /*  clut, 32bit are actually 24 bit RGB images, but we pad them for easy */
  78 /*  accessing. it_screen means that we've got an image that can be drawn */
  79 /*  directly on the screen */
  80 typedef struct gimage {
  81     short list_len;             /* length of list */
  82     union {                     /* depends on whether has_list is set */
  83         struct _GImage *image;
  84         struct _GImage **images;
  85     } u;
  86     void *userdata;
  87 } GImage;
  88
  89 enum pastetrans_type { ptt_paste_trans_to_trans, ptt_old_shines_through};
  90
  91 typedef struct grect {
  92     int32 x,y,width,height;
  93 } GRect;
  94
  95 typedef struct gpoint {
  96     int16 x,y;
  97 } GPoint;
  98
  99 extern GImage *GImageCreate(enum image_type type, int32 width, int32 height);
 100 extern GImage *_GImage_Create(enum image_type type, int32 width, int32 height);
 101 extern void GImageDestroy(GImage *gi);
 102 extern GImage *GImageCreateAnimation(GImage **images, int n);
 103 extern GImage *GImageAddImageBefore(GImage *dest, GImage *src, int pos);
 104
 105 extern GImage *GImageBaseGetSub(struct _GImage *base, enum image_type it, GRect *src, GClut *nclut, RevCMap *rev);
 106 extern GImage *GImageGetSub(GImage *image,enum image_type it, GRect *src, GClut *nclut, RevCMap *rev);
 107 extern int GImageInsertToBase(struct _GImage *tobase, GImage *from, GRect *src, RevCMap *rev,
 108         int to_x, int to_y, enum pastetrans_type ptt );
 109 extern int GImageInsert(GImage *to, GImage *from, GRect *src, RevCMap *rev,
 110         int to_x, int to_y, enum pastetrans_type ptt );
 111 extern Color _GImageGetPixelColor(struct _GImage *base,int x, int y);   /* Obsolete */
 112 extern Color GImageGetPixelColor(GImage *base,int x, int y);            /* Obsolete */
 113 extern Color GImageGetPixelRGBA(GImage *base,int x, int y);
 114 extern int GImageGetWidth(GImage *);
 115 extern int GImageGetHeight(GImage *);
 116 extern void *GImageGetUserData(GImage *img);
 117 extern void GImageSetUserData(GImage *img,void *userdata);
 118 extern void GImageResize(struct _GImage *tobase, struct _GImage *fbase,
 119         GRect *src, RevCMap *rev);
 120 extern GImage *GImageResize32(GImage *from, GRect *src, int width, int height, Color trans);
 121 extern GImage *GImageResizeSame(GImage *from, GRect *src, int width, int height, RevCMap *rev);
 122 extern RevCMap *GClutReverse(GClut *clut,int side_size);
 123 void GClut_RevCMapFree(RevCMap *rev);
 124 extern GClut *GImageFindCLUT(GImage *image,GClut *clut,int clutmax);
 125 extern int GImageSameClut(GClut *clut,GClut *nclut);
 126 extern int GImageGreyClut(GClut *clut);
 127 extern Color GImageColourFName(unichar_t *name);
 128 extern Color _GImage_ColourFName(char *name);
 129 extern char *GImageNameFColour(Color col);
 130 extern Color GDrawColorDarken(Color col, int by);
 131 extern Color GDrawColorBrighten(Color col, int by);
 132
 133 extern int GImageWriteGImage(GImage *gi, char *filename);
 134 extern int GImageWrite_Bmp(GImage *gi, FILE *fp);
 135 extern int GImageWriteBmp(GImage *gi, char *filename);
 136 extern GImage *GImageRead_Bmp(FILE *file);
 137 extern GImage *GImageReadBmp(char *filename);
 138 extern int GImageWriteXbm(GImage *gi, char *filename);
 139 extern GImage *GImageReadXbm(char *filename);
 140 extern int GImageWriteXpm(GImage *gi, char *filename);
 141 extern GImage *GImageReadXpm(char *filename);
 142 extern int GImageWriteEps(GImage *gi, char *filename);
 143 extern GImage *GImageReadTiff(char *filename);
 144 extern GImage *GImageReadJpeg(char *filename);
 145 extern GImage *GImageRead_Jpeg(FILE *fp);
 146 extern int GImageWrite_Jpeg(GImage *gi, FILE *outfile, int quality, int progressive);
 147 extern int GImageWriteJpeg(GImage *gi, char *filename, int quality, int progressive);
 148 extern GImage *GImageRead_Png(FILE *fp);
 149 extern GImage *GImageReadPng(char *filename);
 150 extern int GImageWrite_Png(GImage *gi, FILE *fp, int progressive);
 151 extern int GImageWritePng(GImage *gi, char *filename, int progressive);
 152 extern GImage *GImageReadGif(char *filename);
 153 extern int GImageWriteGif(GImage *gi,char *filename,int progressive);
 154 extern GImage *GImageReadRas(char *filename);           /* Sun Raster */
 155 extern GImage *GImageReadRgb(char *filename);           /* SGI */
 156 extern GImage *GImageRead(char *filename);
 157
 158 extern void GImageDrawRect(GImage *img,GRect *r,Color col);
 159 extern void GImageDrawImage(GImage *dest,GImage *src,void *junk,int x, int y);
 160
 161 extern void gRGB2HSL(struct hslrgb *col);
 162 extern void gHSL2RGB(struct hslrgb *col);
 163 extern void gRGB2HSV(struct hslrgb *col);
 164 extern void gHSV2RGB(struct hslrgb *col);
 165 extern void gColor2Hslrgb(struct hslrgb *col,Color from);
 166 extern Color gHslrgb2Color(struct hslrgb *col);
 167
 168 #endif