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#ifdef __cplusplus extern "C" { #endif #ifndef GD_H #define GD_H 1 #define GD_MAJOR_VERSION 2 #define GD_MINOR_VERSION 0 #define GD_RELEASE_VERSION 35 #define GD_EXTRA_VERSION "" #define GD_VERSION_STRING "2.0.35" /* Do the DLL dance: dllexport when building the DLL, dllimport when importing from it, nothing when not on Silly Silly Windows (tm Aardman Productions). */ /* 2.0.20: for headers */ /* 2.0.24: __stdcall also needed for Visual BASIC and other languages. This breaks ABI compatibility with previous DLL revs, but it's necessary. */ /* 2.0.29: WIN32 programmers can declare the NONDLL macro if they wish to build gd as a static library or by directly including the gd sources in a project. */ #ifndef WIN32 #define NONDLL 1 #endif /* WIN32 */ #ifdef NONDLL #define BGD_DECLARE(rt) extern rt #else #ifdef BGDWIN32 #define BGD_DECLARE(rt) __declspec(dllexport) rt __stdcall #else #define BGD_DECLARE(rt) __declspec(dllimport) rt _stdcall #endif /* BGDWIN32 */ #endif /* NONDLL */ /* 2.0.20: for actual storage of exported data, functions don't need this, currently needed only for font pointers */ #ifdef NONDLL /* 2.0.25: bring back extern */ #define BGD_EXPORT_DATA_PROT extern #define BGD_EXPORT_DATA_IMPL #else #ifdef BGDWIN32 #define BGD_EXPORT_DATA_PROT __declspec(dllexport) extern #define BGD_EXPORT_DATA_IMPL __declspec(dllexport) #else #define BGD_EXPORT_DATA_PROT __declspec(dllimport) extern #define BGD_EXPORT_DATA_IMPL __declspec(dllimport) #endif /* BGDWIN32 */ #endif /* NONDLL */ #ifdef __cplusplus extern "C" { #endif /* some might want to set DEFAULT_FONTPATH from configure in config.h */ #ifdef NETWARE /* default fontpath for netware systems, could probably be handled in configure for 2.1 */ #define DEFAULT_FONTPATH "sys:/java/nwgfx/lib/x11/fonts/ttf;." #define PATHSEPARATOR ";" #endif /* 2.0.23: more Type 1 fonts */ #ifndef DEFAULT_FONTPATH /* default fontpath for unix systems - whatever happened to standards ! */ #define DEFAULT_FONTPATH "/usr/X11R6/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/truetype:/usr/X11R6/lib/X11/fonts/TTF:/usr/share/fonts/TrueType:/usr/share/fonts/truetype:/usr/openwin/lib/X11/fonts/TrueType:/usr/X11R6/lib/X11/fonts/Type1:/usr/lib/X11/fonts/Type1:/usr/openwin/lib/X11/fonts/Type1" #endif #ifndef PATHSEPARATOR #define PATHSEPARATOR ":" #endif /* gd.h: declarations file for the graphic-draw module. * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose and without fee is hereby granted, provided * that the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation. This software is provided "AS IS." Thomas Boutell and * Boutell.Com, Inc. disclaim all warranties, either express or implied, * including but not limited to implied warranties of merchantability and * fitness for a particular purpose, with respect to this code and accompanying * documentation. */ /* stdio is needed for file I/O. */ #include <stdio.h> #include "gd_io.h" /* The maximum number of palette entries in palette-based images. In the wonderful new world of gd 2.0, you can of course have many more colors when using truecolor mode. */ #define gdMaxColors 256 /* Image type. See functions below; you will not need to change the elements directly. Use the provided macros to access sx, sy, the color table, and colorsTotal for read-only purposes. */ /* If 'truecolor' is set true, the image is truecolor; pixels are represented by integers, which must be 32 bits wide or more. True colors are repsented as follows: ARGB Where 'A' (alpha channel) occupies only the LOWER 7 BITS of the MSB. This very small loss of alpha channel resolution allows gd 2.x to keep backwards compatibility by allowing signed integers to be used to represent colors, and negative numbers to represent special cases, just as in gd 1.x. */ #define gdAlphaMax 127 #define gdAlphaOpaque 0 #define gdAlphaTransparent 127 #define gdRedMax 255 #define gdGreenMax 255 #define gdBlueMax 255 #define gdTrueColorGetAlpha(c) (((c) & 0x7F000000) >> 24) #define gdTrueColorGetRed(c) (((c) & 0xFF0000) >> 16) #define gdTrueColorGetGreen(c) (((c) & 0x00FF00) >> 8) #define gdTrueColorGetBlue(c) ((c) & 0x0000FF) /* This function accepts truecolor pixel values only. The source color is composited with the destination color based on the alpha channel value of the source color. The resulting color is opaque. */ BGD_DECLARE(int) gdAlphaBlend (int dest, int src); typedef struct gdImageStruct { /* Palette-based image pixels */ unsigned char **pixels; int sx; int sy; /* These are valid in palette images only. See also 'alpha', which appears later in the structure to preserve binary backwards compatibility */ int colorsTotal; int red[gdMaxColors]; int green[gdMaxColors]; int blue[gdMaxColors]; int open[gdMaxColors]; /* For backwards compatibility, this is set to the first palette entry with 100% transparency, and is also set and reset by the gdImageColorTransparent function. Newer applications can allocate palette entries with any desired level of transparency; however, bear in mind that many viewers, notably many web browsers, fail to implement full alpha channel for PNG and provide support for full opacity or transparency only. */ int transparent; int *polyInts; int polyAllocated; struct gdImageStruct *brush; struct gdImageStruct *tile; int brushColorMap[gdMaxColors]; int tileColorMap[gdMaxColors]; int styleLength; int stylePos; int *style; int interlace; /* New in 2.0: thickness of line. Initialized to 1. */ int thick; /* New in 2.0: alpha channel for palettes. Note that only Macintosh Internet Explorer and (possibly) Netscape 6 really support multiple levels of transparency in palettes, to my knowledge, as of 2/15/01. Most common browsers will display 100% opaque and 100% transparent correctly, and do something unpredictable and/or undesirable for levels in between. TBB */ int alpha[gdMaxColors]; /* Truecolor flag and pixels. New 2.0 fields appear here at the end to minimize breakage of existing object code. */ int trueColor; int **tpixels; /* Should alpha channel be copied, or applied, each time a pixel is drawn? This applies to truecolor images only. No attempt is made to alpha-blend in palette images, even if semitransparent palette entries exist. To do that, build your image as a truecolor image, then quantize down to 8 bits. */ int alphaBlendingFlag; /* Should the alpha channel of the image be saved? This affects PNG at the moment; other future formats may also have that capability. JPEG doesn't. */ int saveAlphaFlag; /* There should NEVER BE ACCESSOR MACROS FOR ITEMS BELOW HERE, so this part of the structure can be safely changed in new releases. */ /* 2.0.12: anti-aliased globals. 2.0.26: just a few vestiges after switching to the fast, memory-cheap implementation from PHP-gd. */ int AA; int AA_color; int AA_dont_blend; /* 2.0.12: simple clipping rectangle. These values must be checked for safety when set; please use gdImageSetClip */ int cx1; int cy1; int cx2; int cy2; } gdImage; typedef gdImage *gdImagePtr; typedef struct { /* # of characters in font */ int nchars; /* First character is numbered... (usually 32 = space) */ int offset; /* Character width and height */ int w; int h; /* Font data; array of characters, one row after another. Easily included in code, also easily loaded from data files. */ char *data; } gdFont; /* Text functions take these. */ typedef gdFont *gdFontPtr; /* For backwards compatibility only. Use gdImageSetStyle() for MUCH more flexible line drawing. Also see gdImageSetBrush(). */ #define gdDashSize 4 /* Special colors. */ #define gdStyled (-2) #define gdBrushed (-3) #define gdStyledBrushed (-4) #define gdTiled (-5) /* NOT the same as the transparent color index. This is used in line styles only. */ #define gdTransparent (-6) #define gdAntiAliased (-7) /* Functions to manipulate images. */ /* Creates a palette-based image (up to 256 colors). */ BGD_DECLARE(gdImagePtr) gdImageCreate (int sx, int sy); /* An alternate name for the above (2.0). */ #define gdImageCreatePalette gdImageCreate /* Creates a truecolor image (millions of colors). */ BGD_DECLARE(gdImagePtr) gdImageCreateTrueColor (int sx, int sy); /* Creates an image from various file types. These functions return a palette or truecolor image based on the nature of the file being loaded. Truecolor PNG stays truecolor; palette PNG stays palette-based; JPEG is always truecolor. */ BGD_DECLARE(gdImagePtr) gdImageCreateFromPng (FILE * fd); BGD_DECLARE(gdImagePtr) gdImageCreateFromPngCtx (gdIOCtxPtr in); BGD_DECLARE(gdImagePtr) gdImageCreateFromPngPtr (int size, void *data); /* These read the first frame only */ BGD_DECLARE(gdImagePtr) gdImageCreateFromGif (FILE * fd); BGD_DECLARE(gdImagePtr) gdImageCreateFromGifCtx (gdIOCtxPtr in); BGD_DECLARE(gdImagePtr) gdImageCreateFromGifPtr (int size, void *data); BGD_DECLARE(gdImagePtr) gdImageCreateFromWBMP (FILE * inFile); BGD_DECLARE(gdImagePtr) gdImageCreateFromWBMPCtx (gdIOCtx * infile); BGD_DECLARE(gdImagePtr) gdImageCreateFromWBMPPtr (int size, void *data); BGD_DECLARE(gdImagePtr) gdImageCreateFromJpeg (FILE * infile); BGD_DECLARE(gdImagePtr) gdImageCreateFromJpegCtx (gdIOCtx * infile); BGD_DECLARE(gdImagePtr) gdImageCreateFromJpegPtr (int size, void *data); /* A custom data source. */ /* The source function must return -1 on error, otherwise the number of bytes fetched. 0 is EOF, not an error! */ /* context will be passed to your source function. */ typedef struct { int (*source) (void *context, char *buffer, int len); void *context; } gdSource, *gdSourcePtr; /* Deprecated in favor of gdImageCreateFromPngCtx */ BGD_DECLARE(gdImagePtr) gdImageCreateFromPngSource (gdSourcePtr in); BGD_DECLARE(gdImagePtr) gdImageCreateFromGd (FILE * in); BGD_DECLARE(gdImagePtr) gdImageCreateFromGdCtx (gdIOCtxPtr in); BGD_DECLARE(gdImagePtr) gdImageCreateFromGdPtr (int size, void *data); BGD_DECLARE(gdImagePtr) gdImageCreateFromGd2 (FILE * in); BGD_DECLARE(gdImagePtr) gdImageCreateFromGd2Ctx (gdIOCtxPtr in); BGD_DECLARE(gdImagePtr) gdImageCreateFromGd2Ptr (int size, void *data); BGD_DECLARE(gdImagePtr) gdImageCreateFromGd2Part (FILE * in, int srcx, int srcy, int w, int h); BGD_DECLARE(gdImagePtr) gdImageCreateFromGd2PartCtx (gdIOCtxPtr in, int srcx, int srcy, int w, int h); BGD_DECLARE(gdImagePtr) gdImageCreateFromGd2PartPtr (int size, void *data, int srcx, int srcy, int w, int h); /* 2.0.10: prototype was missing */ BGD_DECLARE(gdImagePtr) gdImageCreateFromXbm (FILE * in); /* NOTE: filename, not FILE */ BGD_DECLARE(gdImagePtr) gdImageCreateFromXpm (char *filename); BGD_DECLARE(void) gdImageDestroy (gdImagePtr im); /* Replaces or blends with the background depending on the most recent call to gdImageAlphaBlending and the alpha channel value of 'color'; default is to overwrite. Tiling and line styling are also implemented here. All other gd drawing functions pass through this call, allowing for many useful effects. */ BGD_DECLARE(void) gdImageSetPixel (gdImagePtr im, int x, int y, int color); /* FreeType 2 text output with hook to extra flags */ BGD_DECLARE(int) gdImageGetPixel (gdImagePtr im, int x, int y); BGD_DECLARE(int) gdImageGetTrueColorPixel (gdImagePtr im, int x, int y); BGD_DECLARE(void) gdImageAABlend (gdImagePtr im); BGD_DECLARE(void) gdImageLine (gdImagePtr im, int x1, int y1, int x2, int y2, int color); /* For backwards compatibility only. Use gdImageSetStyle() for much more flexible line drawing. */ BGD_DECLARE(void) gdImageDashedLine (gdImagePtr im, int x1, int y1, int x2, int y2, int color); /* Corners specified (not width and height). Upper left first, lower right second. */ BGD_DECLARE(void) gdImageRectangle (gdImagePtr im, int x1, int y1, int x2, int y2, int color); /* Solid bar. Upper left corner first, lower right corner second. */ BGD_DECLARE(void) gdImageFilledRectangle (gdImagePtr im, int x1, int y1, int x2, int y2, int color); BGD_DECLARE(void) gdImageSetClip(gdImagePtr im, int x1, int y1, int x2, int y2); BGD_DECLARE(void) gdImageGetClip(gdImagePtr im, int *x1P, int *y1P, int *x2P, int *y2P); BGD_DECLARE(int) gdImageBoundsSafe (gdImagePtr im, int x, int y); BGD_DECLARE(void) gdImageChar (gdImagePtr im, gdFontPtr f, int x, int y, int c, int color); BGD_DECLARE(void) gdImageCharUp (gdImagePtr im, gdFontPtr f, int x, int y, int c, int color); BGD_DECLARE(void) gdImageString (gdImagePtr im, gdFontPtr f, int x, int y, unsigned char *s, int color); BGD_DECLARE(void) gdImageStringUp (gdImagePtr im, gdFontPtr f, int x, int y, unsigned char *s, int color); BGD_DECLARE(void) gdImageString16 (gdImagePtr im, gdFontPtr f, int x, int y, unsigned short *s, int color); BGD_DECLARE(void) gdImageStringUp16 (gdImagePtr im, gdFontPtr f, int x, int y, unsigned short *s, int color); /* 2.0.16: for thread-safe use of gdImageStringFT and friends, call this before allowing any thread to call gdImageStringFT. Otherwise it is invoked by the first thread to invoke gdImageStringFT, with a very small but real risk of a race condition. Return 0 on success, nonzero on failure to initialize freetype. */ BGD_DECLARE(int) gdFontCacheSetup (void); /* Optional: clean up after application is done using fonts in BGD_DECLARE( ) gdImageStringFT(). */ BGD_DECLARE(void) gdFontCacheShutdown (void); /* 2.0.20: for backwards compatibility. A few applications did start calling this function when it first appeared although it was never documented. Simply invokes gdFontCacheShutdown. */ BGD_DECLARE(void) gdFreeFontCache (void); /* Calls gdImageStringFT. Provided for backwards compatibility only. */ BGD_DECLARE(char *) gdImageStringTTF (gdImage * im, int *brect, int fg, char *fontlist, double ptsize, double angle, int x, int y, char *string); /* FreeType 2 text output */ BGD_DECLARE(char *) gdImageStringFT (gdImage * im, int *brect, int fg, char *fontlist, double ptsize, double angle, int x, int y, char *string); /* 2.0.5: provides an extensible way to pass additional parameters. Thanks to Wez Furlong, sorry for the delay. */ typedef struct { int flags; /* Logical OR of gdFTEX_ values */ double linespacing; /* fine tune line spacing for '\n' */ int charmap; /* TBB: 2.0.12: may be gdFTEX_Unicode, gdFTEX_Shift_JIS, gdFTEX_Big5, or gdFTEX_Adobe_Custom; when not specified, maps are searched for in the above order. */ int hdpi; /* if (flags & gdFTEX_RESOLUTION) */ int vdpi; /* if (flags & gdFTEX_RESOLUTION) */ char *xshow; /* if (flags & gdFTEX_XSHOW) then, on return, xshow is a malloc'ed string contining xshow position data for the last string. NB. The caller is responsible for gdFree'ing the xshow string. */ char *fontpath; /* if (flags & gdFTEX_RETURNFONTPATHNAME) then, on return, fontpath is a malloc'ed string containing the actual font file path name used, which can be interesting when fontconfig is in use. The caller is responsible for gdFree'ing the fontpath string. */ } gdFTStringExtra, *gdFTStringExtraPtr; #define gdFTEX_LINESPACE 1 #define gdFTEX_CHARMAP 2 #define gdFTEX_RESOLUTION 4 #define gdFTEX_DISABLE_KERNING 8 #define gdFTEX_XSHOW 16 /* The default unless gdFTUseFontConfig(1); has been called: fontlist is a full or partial font file pathname or list thereof (i.e. just like before 2.0.29) */ #define gdFTEX_FONTPATHNAME 32 /* Necessary to use fontconfig patterns instead of font pathnames as the fontlist argument, unless gdFTUseFontConfig(1); has been called. New in 2.0.29 */ #define gdFTEX_FONTCONFIG 64 /* Sometimes interesting when fontconfig is used: the fontpath element of the structure above will contain a gdMalloc'd string copy of the actual font file pathname used, if this flag is set when the call is made */ #define gdFTEX_RETURNFONTPATHNAME 128 /* If flag is nonzero, the fontlist parameter to gdImageStringFT and gdImageStringFTEx shall be assumed to be a fontconfig font pattern if fontconfig was compiled into gd. This function returns zero if fontconfig is not available, nonzero otherwise. */ BGD_DECLARE(int) gdFTUseFontConfig(int flag); /* These are NOT flags; set one in 'charmap' if you set the gdFTEX_CHARMAP bit in 'flags'. */ #define gdFTEX_Unicode 0 #define gdFTEX_Shift_JIS 1 #define gdFTEX_Big5 2 #define gdFTEX_Adobe_Custom 3 BGD_DECLARE(char *) gdImageStringFTEx (gdImage * im, int *brect, int fg, char *fontlist, double ptsize, double angle, int x, int y, char *string, gdFTStringExtraPtr strex); /* Point type for use in polygon drawing. */ typedef struct { int x, y; } gdPoint, *gdPointPtr; BGD_DECLARE(void) gdImagePolygon (gdImagePtr im, gdPointPtr p, int n, int c); BGD_DECLARE(void) gdImageOpenPolygon (gdImagePtr im, gdPointPtr p, int n, int c); BGD_DECLARE(void) gdImageFilledPolygon (gdImagePtr im, gdPointPtr p, int n, int c); /* These functions still work with truecolor images, for which they never return error. */ BGD_DECLARE(int) gdImageColorAllocate (gdImagePtr im, int r, int g, int b); /* gd 2.0: palette entries with non-opaque transparency are permitted. */ BGD_DECLARE(int) gdImageColorAllocateAlpha (gdImagePtr im, int r, int g, int b, int a); /* Assumes opaque is the preferred alpha channel value */ BGD_DECLARE(int) gdImageColorClosest (gdImagePtr im, int r, int g, int b); /* Closest match taking all four parameters into account. A slightly different color with the same transparency beats the exact same color with radically different transparency */ BGD_DECLARE(int) gdImageColorClosestAlpha (gdImagePtr im, int r, int g, int b, int a); /* An alternate method */ BGD_DECLARE(int) gdImageColorClosestHWB (gdImagePtr im, int r, int g, int b); /* Returns exact, 100% opaque matches only */ BGD_DECLARE(int) gdImageColorExact (gdImagePtr im, int r, int g, int b); /* Returns an exact match only, including alpha */ BGD_DECLARE(int) gdImageColorExactAlpha (gdImagePtr im, int r, int g, int b, int a); /* Opaque only */ BGD_DECLARE(int) gdImageColorResolve (gdImagePtr im, int r, int g, int b); /* Based on gdImageColorExactAlpha and gdImageColorClosestAlpha */ BGD_DECLARE(int) gdImageColorResolveAlpha (gdImagePtr im, int r, int g, int b, int a); /* A simpler way to obtain an opaque truecolor value for drawing on a truecolor image. Not for use with palette images! */ #define gdTrueColor(r, g, b) (((r) << 16) + \ ((g) << 8) + \ (b)) /* Returns a truecolor value with an alpha channel component. gdAlphaMax (127, **NOT 255**) is transparent, 0 is completely opaque. */ #define gdTrueColorAlpha(r, g, b, a) (((a) << 24) + \ ((r) << 16) + \ ((g) << 8) + \ (b)) BGD_DECLARE(void) gdImageColorDeallocate (gdImagePtr im, int color); /* Converts a truecolor image to a palette-based image, using a high-quality two-pass quantization routine which attempts to preserve alpha channel information as well as R/G/B color information when creating a palette. If ditherFlag is set, the image will be dithered to approximate colors better, at the expense of some obvious "speckling." colorsWanted can be anything up to 256. If the original source image includes photographic information or anything that came out of a JPEG, 256 is strongly recommended. Better yet, don't use these function -- write real truecolor PNGs and JPEGs. The disk space gain of conversion to palette is not great (for small images it can be negative) and the quality loss is ugly. DIFFERENCES: gdImageCreatePaletteFromTrueColor creates and returns a new image. gdImageTrueColorToPalette modifies an existing image, and the truecolor pixels are discarded. */ BGD_DECLARE(gdImagePtr) gdImageCreatePaletteFromTrueColor (gdImagePtr im, int ditherFlag, int colorsWanted); BGD_DECLARE(void) gdImageTrueColorToPalette (gdImagePtr im, int ditherFlag, int colorsWanted); /* Specifies a color index (if a palette image) or an RGB color (if a truecolor image) which should be considered 100% transparent. FOR TRUECOLOR IMAGES, THIS IS IGNORED IF AN ALPHA CHANNEL IS BEING SAVED. Use gdImageSaveAlpha(im, 0); to turn off the saving of a full alpha channel in a truecolor image. Note that gdImageColorTransparent is usually compatible with older browsers that do not understand full alpha channels well. TBB */ BGD_DECLARE(void) gdImageColorTransparent (gdImagePtr im, int color); BGD_DECLARE(void) gdImagePaletteCopy (gdImagePtr dst, gdImagePtr src); BGD_DECLARE(void) gdImageGif (gdImagePtr im, FILE * out); BGD_DECLARE(void) gdImagePng (gdImagePtr im, FILE * out); BGD_DECLARE(void) gdImagePngCtx (gdImagePtr im, gdIOCtx * out); BGD_DECLARE(void) gdImageGifCtx (gdImagePtr im, gdIOCtx * out); /* 2.0.12: Compression level: 0-9 or -1, where 0 is NO COMPRESSION at all, 1 is FASTEST but produces larger files, 9 provides the best compression (smallest files) but takes a long time to compress, and -1 selects the default compiled into the zlib library. */ BGD_DECLARE(void) gdImagePngEx (gdImagePtr im, FILE * out, int level); BGD_DECLARE(void) gdImagePngCtxEx (gdImagePtr im, gdIOCtx * out, int level); BGD_DECLARE(void) gdImageWBMP (gdImagePtr image, int fg, FILE * out); BGD_DECLARE(void) gdImageWBMPCtx (gdImagePtr image, int fg, gdIOCtx * out); /* Guaranteed to correctly free memory returned by the gdImage*Ptr functions */ BGD_DECLARE(void) gdFree (void *m); /* Best to free this memory with gdFree(), not free() */ BGD_DECLARE(void *) gdImageWBMPPtr (gdImagePtr im, int *size, int fg); /* 100 is highest quality (there is always a little loss with JPEG). 0 is lowest. 10 is about the lowest useful setting. */ BGD_DECLARE(void) gdImageJpeg (gdImagePtr im, FILE * out, int quality); BGD_DECLARE(void) gdImageJpegCtx (gdImagePtr im, gdIOCtx * out, int quality); /* Best to free this memory with gdFree(), not free() */ BGD_DECLARE(void *) gdImageJpegPtr (gdImagePtr im, int *size, int quality); /* Legal values for Disposal. gdDisposalNone is always used by the built-in optimizer if previm is passed. */ enum { gdDisposalUnknown, gdDisposalNone, gdDisposalRestoreBackground, gdDisposalRestorePrevious }; BGD_DECLARE(void) gdImageGifAnimBegin(gdImagePtr im, FILE *outFile, int GlobalCM, int Loops); BGD_DECLARE(void) gdImageGifAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal, gdImagePtr previm); BGD_DECLARE(void) gdImageGifAnimEnd(FILE *outFile); BGD_DECLARE(void) gdImageGifAnimBeginCtx(gdImagePtr im, gdIOCtx *out, int GlobalCM, int Loops); BGD_DECLARE(void) gdImageGifAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal, gdImagePtr previm); BGD_DECLARE(void) gdImageGifAnimEndCtx(gdIOCtx *out); BGD_DECLARE(void *) gdImageGifAnimBeginPtr(gdImagePtr im, int *size, int GlobalCM, int Loops); BGD_DECLARE(void *) gdImageGifAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal, gdImagePtr previm); BGD_DECLARE(void *) gdImageGifAnimEndPtr(int *size); /* A custom data sink. For backwards compatibility. Use gdIOCtx instead. */ /* The sink function must return -1 on error, otherwise the number of bytes written, which must be equal to len. */ /* context will be passed to your sink function. */ typedef struct { int (*sink) (void *context, const char *buffer, int len); void *context; } gdSink, *gdSinkPtr; BGD_DECLARE(void) gdImagePngToSink (gdImagePtr im, gdSinkPtr out); BGD_DECLARE(void) gdImageGd (gdImagePtr im, FILE * out); BGD_DECLARE(void) gdImageGd2 (gdImagePtr im, FILE * out, int cs, int fmt); /* Best to free this memory with gdFree(), not free() */ BGD_DECLARE(void *) gdImageGifPtr (gdImagePtr im, int *size); /* Best to free this memory with gdFree(), not free() */ BGD_DECLARE(void *) gdImagePngPtr (gdImagePtr im, int *size); BGD_DECLARE(void *) gdImagePngPtrEx (gdImagePtr im, int *size, int level); /* Best to free this memory with gdFree(), not free() */ BGD_DECLARE(void *) gdImageGdPtr (gdImagePtr im, int *size); /* Best to free this memory with gdFree(), not free() */ BGD_DECLARE(void *) gdImageGd2Ptr (gdImagePtr im, int cs, int fmt, int *size); BGD_DECLARE(void) gdImageEllipse (gdImagePtr im, int cx, int cy, int w, int h, int color); /* Style is a bitwise OR ( | operator ) of these. gdArc and gdChord are mutually exclusive; gdChord just connects the starting and ending angles with a straight line, while gdArc produces a rounded edge. gdPie is a synonym for gdArc. gdNoFill indicates that the arc or chord should be outlined, not filled. gdEdged, used together with gdNoFill, indicates that the beginning and ending angles should be connected to the center; this is a good way to outline (rather than fill) a 'pie slice'. */ #define gdArc 0 #define gdPie gdArc #define gdChord 1 #define gdNoFill 2 #define gdEdged 4 BGD_DECLARE(void) gdImageFilledArc (gdImagePtr im, int cx, int cy, int w, int h, int s, int e, int color, int style); BGD_DECLARE(void) gdImageArc (gdImagePtr im, int cx, int cy, int w, int h, int s, int e, int color); BGD_DECLARE(void) gdImageEllipse(gdImagePtr im, int cx, int cy, int w, int h, int color); BGD_DECLARE(void) gdImageFilledEllipse (gdImagePtr im, int cx, int cy, int w, int h, int color); BGD_DECLARE(void) gdImageFillToBorder (gdImagePtr im, int x, int y, int border, int color); BGD_DECLARE(void) gdImageFill (gdImagePtr im, int x, int y, int color); BGD_DECLARE(void) gdImageCopy (gdImagePtr dst, gdImagePtr src, int dstX, int dstY, int srcX, int srcY, int w, int h); BGD_DECLARE(void) gdImageCopyMerge (gdImagePtr dst, gdImagePtr src, int dstX, int dstY, int srcX, int srcY, int w, int h, int pct); BGD_DECLARE(void) gdImageCopyMergeGray (gdImagePtr dst, gdImagePtr src, int dstX, int dstY, int srcX, int srcY, int w, int h, int pct); /* Stretches or shrinks to fit, as needed. Does NOT attempt to average the entire set of source pixels that scale down onto the destination pixel. */ BGD_DECLARE(void) gdImageCopyResized (gdImagePtr dst, gdImagePtr src, int dstX, int dstY, int srcX, int srcY, int dstW, int dstH, int srcW, int srcH); /* gd 2.0: stretches or shrinks to fit, as needed. When called with a truecolor destination image, this function averages the entire set of source pixels that scale down onto the destination pixel, taking into account what portion of the destination pixel each source pixel represents. This is a floating point operation, but this is not a performance issue on modern hardware, except for some embedded devices. If the destination is a palette image, gdImageCopyResized is substituted automatically. */ BGD_DECLARE(void) gdImageCopyResampled (gdImagePtr dst, gdImagePtr src, int dstX, int dstY, int srcX, int srcY, int dstW, int dstH, int srcW, int srcH); /* gd 2.0.8: gdImageCopyRotated is added. Source is a rectangle, with its upper left corner at srcX and srcY. Destination is the *center* of the rotated copy. Angle is in degrees, same as gdImageArc. Floating point destination center coordinates allow accurate rotation of objects of odd-numbered width or height. */ BGD_DECLARE(void) gdImageCopyRotated (gdImagePtr dst, gdImagePtr src, double dstX, double dstY, int srcX, int srcY, int srcWidth, int srcHeight, int angle); BGD_DECLARE(void) gdImageSetBrush (gdImagePtr im, gdImagePtr brush); BGD_DECLARE(void) gdImageSetTile (gdImagePtr im, gdImagePtr tile); BGD_DECLARE(void) gdImageSetAntiAliased (gdImagePtr im, int c); BGD_DECLARE(void) gdImageSetAntiAliasedDontBlend (gdImagePtr im, int c, int dont_blend); BGD_DECLARE(void) gdImageSetStyle (gdImagePtr im, int *style, int noOfPixels); /* Line thickness (defaults to 1). Affects lines, ellipses, rectangles, polygons and so forth. */ BGD_DECLARE(void) gdImageSetThickness (gdImagePtr im, int thickness); /* On or off (1 or 0) for all three of these. */ BGD_DECLARE(void) gdImageInterlace (gdImagePtr im, int interlaceArg); BGD_DECLARE(void) gdImageAlphaBlending (gdImagePtr im, int alphaBlendingArg); BGD_DECLARE(void) gdImageSaveAlpha (gdImagePtr im, int saveAlphaArg); /* Macros to access information about images. */ /* Returns nonzero if the image is a truecolor image, zero for a palette image. */ #define gdImageTrueColor(im) ((im)->trueColor) #define gdImageSX(im) ((im)->sx) #define gdImageSY(im) ((im)->sy) #define gdImageColorsTotal(im) ((im)->colorsTotal) #define gdImageRed(im, c) ((im)->trueColor ? gdTrueColorGetRed(c) : \ (im)->red[(c)]) #define gdImageGreen(im, c) ((im)->trueColor ? gdTrueColorGetGreen(c) : \ (im)->green[(c)]) #define gdImageBlue(im, c) ((im)->trueColor ? gdTrueColorGetBlue(c) : \ (im)->blue[(c)]) #define gdImageAlpha(im, c) ((im)->trueColor ? gdTrueColorGetAlpha(c) : \ (im)->alpha[(c)]) #define gdImageGetTransparent(im) ((im)->transparent) #define gdImageGetInterlaced(im) ((im)->interlace) /* These macros provide direct access to pixels in palette-based and truecolor images, respectively. If you use these macros, you must perform your own bounds checking. Use of the macro for the correct type of image is also your responsibility. */ #define gdImagePalettePixel(im, x, y) (im)->pixels[(y)][(x)] #define gdImageTrueColorPixel(im, x, y) (im)->tpixels[(y)][(x)] /* I/O Support routines. */ BGD_DECLARE(gdIOCtx *) gdNewFileCtx (FILE *); /* If data is null, size is ignored and an initial data buffer is allocated automatically. NOTE: this function assumes gd has the right to free or reallocate "data" at will! Also note that gd will free "data" when the IO context is freed. If data is not null, it must point to memory allocated with gdMalloc, or by a call to gdImage[something]Ptr. If not, see gdNewDynamicCtxEx for an alternative. */ BGD_DECLARE(gdIOCtx *) gdNewDynamicCtx (int size, void *data); /* 2.0.21: if freeFlag is nonzero, gd will free and/or reallocate "data" as needed as described above. If freeFlag is zero, gd will never free or reallocate "data," which means that the context should only be used for *reading* an image from a memory buffer, or writing an image to a memory buffer which is already large enough. If the memory buffer is not large enough and an image write is attempted, the write operation will fail. Those wishing to write an image to a buffer in memory have a much simpler alternative in the gdImage[something]Ptr functions. */ BGD_DECLARE(gdIOCtx *) gdNewDynamicCtxEx (int size, void *data, int freeFlag); BGD_DECLARE(gdIOCtx *) gdNewSSCtx (gdSourcePtr in, gdSinkPtr out); BGD_DECLARE(void *) gdDPExtractData (struct gdIOCtx *ctx, int *size); #define GD2_CHUNKSIZE 128 #define GD2_CHUNKSIZE_MIN 64 #define GD2_CHUNKSIZE_MAX 4096 #define GD2_VERS 2 #define GD2_ID "gd2" #define GD2_FMT_RAW 1 #define GD2_FMT_COMPRESSED 2 /* Image comparison definitions */ BGD_DECLARE(int) gdImageCompare (gdImagePtr im1, gdImagePtr im2); #define GD_CMP_IMAGE 1 /* Actual image IS different */ #define GD_CMP_NUM_COLORS 2 /* Number of Colours in pallette differ */ #define GD_CMP_COLOR 4 /* Image colours differ */ #define GD_CMP_SIZE_X 8 /* Image width differs */ #define GD_CMP_SIZE_Y 16 /* Image heights differ */ #define GD_CMP_TRANSPARENT 32 /* Transparent colour */ #define GD_CMP_BACKGROUND 64 /* Background colour */ #define GD_CMP_INTERLACE 128 /* Interlaced setting */ #define GD_CMP_TRUECOLOR 256 /* Truecolor vs palette differs */ /* resolution affects ttf font rendering, particularly hinting */ #define GD_RESOLUTION 96 /* pixels per inch */ #ifdef __cplusplus } #endif /* newfangled special effects */ #include "gdfx.h" #endif /* GD_H */ #ifdef __cplusplus } #endif
/home/sudancam/../../usr/include/./X11/../gd.h