diff options
Diffstat (limited to 'include/cd_private.h')
| -rw-r--r-- | include/cd_private.h | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/include/cd_private.h b/include/cd_private.h new file mode 100644 index 0000000..9ca38ce --- /dev/null +++ b/include/cd_private.h @@ -0,0 +1,362 @@ +/** \file + * \brief Private CD declarations + * + * See Copyright Notice in cd.h + */ + +#ifndef __CD_PRIVATE_H +#define __CD_PRIVATE_H + +#include <stdarg.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* All context canvas must have at least the base canvas pointer. */ +typedef struct _cdCtxCanvasBase +{ + cdCanvas* canvas; +} cdCtxCanvasBase; + +typedef struct _cdCtxCanvas cdCtxCanvas; +typedef struct _cdCtxImage cdCtxImage; + +typedef struct _cdVectorFont cdVectorFont; +typedef struct _cdSimulation cdSimulation; + +typedef struct _cdPoint +{ + int x, y; +} cdPoint; + +typedef struct _cdfPoint +{ + double x, y; +} cdfPoint; + +typedef struct _cdRect +{ + int xmin, xmax, ymin, ymax; +} cdRect; + +typedef struct _cdfRect +{ + double xmin, xmax, ymin, ymax; +} cdfRect; + +typedef struct _cdAttribute +{ + const char *name; + + /* can be NULL one of them */ + void (*set)(cdCtxCanvas* ctxcanvas, char* data); + char* (*get)(cdCtxCanvas* ctxcanvas); +} cdAttribute; + +struct _cdImage +{ + int w, h; + cdCtxImage* ctximage; + + /* can NOT be NULL */ + void (*cxGetImage)(cdCtxCanvas* ctxcanvas, cdCtxImage* ctximage, int x, int y); + void (*cxPutImageRect)(cdCtxCanvas* ctxcanvas, cdCtxImage* ctximage, int x, int y, int xmin, int xmax, int ymin, int ymax); + void (*cxKillImage)(cdCtxImage* ctximage); +}; + +struct _cdContext +{ + unsigned long caps; /* canvas capabilities, combination of CD_CAP_* */ + int plus; /* indicates if the canvas is context plus */ + + /* can NOT be NULL */ + void (*cxCreateCanvas)(cdCanvas* canvas, void *data); + void (*cxInitTable)(cdCanvas* canvas); + + /* can be NULL */ + int (*cxPlay)(cdCanvas* canvas, int xmin, int xmax, int ymin, int ymax, void *data); + int (*cxRegisterCallback)(int cb, cdCallback func); +}; + +struct _cdCanvas +{ + char signature[2]; /* must be "CD" */ + + /* can NOT be NULL */ + void (*cxPixel)(cdCtxCanvas* ctxcanvas, int x, int y, long color); + void (*cxLine)(cdCtxCanvas* ctxcanvas, int x1, int y1, int x2, int y2); + void (*cxPoly)(cdCtxCanvas* ctxcanvas, int mode, cdPoint* points, int n); + void (*cxRect)(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, int ymax); + void (*cxBox)(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, int ymax); + void (*cxArc)(cdCtxCanvas* ctxcanvas, int xc, int yc, int w, int h, double angle1, double angle2); + void (*cxSector)(cdCtxCanvas* ctxcanvas, int xc, int yc, int w, int h, double angle1, double angle2); + void (*cxChord)(cdCtxCanvas* ctxcanvas, int xc, int yc, int w, int h, double angle1, double angle2); + void (*cxText)(cdCtxCanvas* ctxcanvas, int x, int y, const char *s); + void (*cxKillCanvas)(cdCtxCanvas* ctxcanvas); + int (*cxFont)(cdCtxCanvas* ctxcanvas, const char *type_face, int style, int size); + void (*cxPutImageRectMap)(cdCtxCanvas* ctxcanvas, int iw, int ih, const unsigned char *index, const long *colors, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax); + void (*cxPutImageRectRGB)(cdCtxCanvas* ctxcanvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax); + + /* default implementation uses the simulation driver */ + void (*cxGetFontDim)(cdCtxCanvas* ctxcanvas, int *max_width, int *height, int *ascent, int *descent); + void (*cxGetTextSize)(cdCtxCanvas* ctxcanvas, const char *s, int *width, int *height); + + /* all the following function pointers can be NULL */ + + void (*cxFlush)(cdCtxCanvas* ctxcanvas); + void (*cxClear)(cdCtxCanvas* ctxcanvas); + + void (*cxFLine)(cdCtxCanvas* ctxcanvas, double x1, double y1, double x2, double y2); + void (*cxFPoly)(cdCtxCanvas* ctxcanvas, int mode, cdfPoint* points, int n); + void (*cxFRect)(cdCtxCanvas* ctxcanvas, double xmin, double xmax, double ymin, double ymax); + void (*cxFBox)(cdCtxCanvas* ctxcanvas, double xmin, double xmax, double ymin, double ymax); + void (*cxFArc)(cdCtxCanvas* ctxcanvas, double xc, double yc, double w, double h, double angle1, double angle2); + void (*cxFSector)(cdCtxCanvas* ctxcanvas, double xc, double yc, double w, double h, double angle1, double angle2); + void (*cxFChord)(cdCtxCanvas* ctxcanvas, double xc, double yc, double w, double h, double angle1, double angle2); + void (*cxFText)(cdCtxCanvas* ctxcanvas, double x, double y, const char *s); + + int (*cxClip)(cdCtxCanvas* ctxcanvas, int mode); + void (*cxClipArea)(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, int ymax); + void (*cxFClipArea)(cdCtxCanvas* ctxcanvas, double xmin, double xmax, double ymin, double ymax); + int (*cxBackOpacity)(cdCtxCanvas* ctxcanvas, int opacity); + int (*cxWriteMode)(cdCtxCanvas* ctxcanvas, int mode); + int (*cxLineStyle)(cdCtxCanvas* ctxcanvas, int style); + int (*cxLineWidth)(cdCtxCanvas* ctxcanvas, int width); + int (*cxLineJoin)(cdCtxCanvas* ctxcanvas, int join); + int (*cxLineCap)(cdCtxCanvas* ctxcanvas, int cap); + int (*cxInteriorStyle)(cdCtxCanvas* ctxcanvas, int style); + int (*cxHatch)(cdCtxCanvas* ctxcanvas, int style); + void (*cxStipple)(cdCtxCanvas* ctxcanvas, int w, int h, const unsigned char *stipple); + void (*cxPattern)(cdCtxCanvas* ctxcanvas, int w, int h, const long *pattern); + int (*cxNativeFont)(cdCtxCanvas* ctxcanvas, const char* font); + int (*cxTextAlignment)(cdCtxCanvas* ctxcanvas, int alignment); + double (*cxTextOrientation)(cdCtxCanvas* ctxcanvas, double angle); + void (*cxPalette)(cdCtxCanvas* ctxcanvas, int n, const long *palette, int mode); + long (*cxBackground)(cdCtxCanvas* ctxcanvas, long color); + long (*cxForeground)(cdCtxCanvas* ctxcanvas, long color); + void (*cxTransform)(cdCtxCanvas* ctxcanvas, const double* matrix); + + void (*cxPutImageRectRGBA)(cdCtxCanvas* ctxcanvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, const unsigned char *a, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax); + void (*cxGetImageRGB)(cdCtxCanvas* ctxcanvas, unsigned char *r, unsigned char *g, unsigned char *b, int x, int y, int w, int h); + void (*cxScrollArea)(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, int ymax, int dx, int dy); + + cdCtxImage* (*cxCreateImage)(cdCtxCanvas* ctxcanvas, int w, int h); + void (*cxKillImage)(cdCtxImage* ctximage); + void (*cxGetImage)(cdCtxCanvas* ctxcanvas, cdCtxImage* ctximage, int x, int y); + void (*cxPutImageRect)(cdCtxCanvas* ctxcanvas, cdCtxImage* ctximage, int x, int y, int xmin, int xmax, int ymin, int ymax); + + void (*cxNewRegion)(cdCtxCanvas* ctxcanvas); + int (*cxIsPointInRegion)(cdCtxCanvas* ctxcanvas, int x, int y); + void (*cxOffsetRegion)(cdCtxCanvas* ctxcanvas, int x, int y); + void (*cxGetRegionBox)(cdCtxCanvas* ctxcanvas, int *xmin, int *xmax, int *ymin, int *ymax); + + int (*cxActivate)(cdCtxCanvas* ctxcanvas); + void (*cxDeactivate)(cdCtxCanvas* ctxcanvas); + + /* the driver must update these, when the canvas is created and + whenever the canvas change its size or bpp. */ + int w,h; /* size in pixels */ /**** pixel = mm * res ****/ + double w_mm, h_mm; /* size in mm */ /**** mm = pixel / res ****/ + double xres, yres; /* resolution in pixels/mm */ /**** res = pixel / mm ****/ + int bpp; /* number of bits per pixel */ + int invert_yaxis; /* the driver has the y axis from top to bottom */ + double matrix[6]; + int use_matrix; + + /* clipping attributes */ + int clip_mode; + cdRect clip_rect; + cdfRect clip_frect; + int clip_poly_n; + cdPoint* clip_poly; /* only defined if integer poligon created, if exist clip_fpoly is NULL, and ->Poly exists */ + cdfPoint* clip_fpoly; /* only defined if real poligon created, if exist clip_poly is NULL, and ->fPoly exists */ + + /* clipping region attributes */ + int new_region; + int combine_mode; + + /* color attributes */ + long foreground, background; + int back_opacity, write_mode; + + /* primitive attributes */ + int mark_type, mark_size; + + int line_style, line_width; + int line_cap, line_join; + int* line_dashes; + int line_dashes_count; + + int interior_style, hatch_style; + int fill_mode; + + char font_type_face[1024]; + int font_style, font_size; + int text_alignment; + double text_orientation; + char native_font[1024]; + + int pattern_w, pattern_h, pattern_size; + long* pattern; + int stipple_w, stipple_h, stipple_size; + unsigned char* stipple; + + /* origin */ + int use_origin; + cdPoint origin; /* both points contains the same coordinate always */ + cdfPoint forigin; + + /* last polygon */ + int poly_mode, + poly_n, /* current number of vertices */ + poly_size, fpoly_size; /* allocated number of vertices, only increases */ + cdPoint* poly; /* used during an integer poligon creation, only if ->Poly exists */ + cdfPoint* fpoly; /* used during an real poligon creation, only if ->fPoly exists */ + int use_fpoly; + + /* simulation flags */ + int sim_mode; + int sim_poly; + + /* WC */ + double s, sx, tx, sy, ty; /* Transformacao Window -> Viewport (scale+translation)*/ + cdfRect window; /* Window in WC */ + cdRect viewport; /* Viewport in pixels */ + + cdAttribute* attrib_list[50]; + int attrib_n; + + cdVectorFont* vector_font; + cdSimulation* simulation; + cdCtxCanvas* ctxcanvas; + cdContext* context; +}; + + +/***************/ +/* attributes */ +/***************/ +void cdRegisterAttribute(cdCanvas* canvas, cdAttribute* attrib); + +/***************/ +/* vector font */ +/***************/ +cdVectorFont* cdCreateVectorFont(cdCanvas* canvas); +void cdKillVectorFont(cdVectorFont* vector_font_data); + +/**********/ +/* WC */ +/**********/ +void wdSetDefaults(cdCanvas* canvas); + +/********************/ +/* Context Plus */ +/********************/ +void cdInitContextPlusList(cdContext* ctx_list[]); +cdContext* cdGetContextPlus(int ctx); +enum{CD_CTX_NATIVEWINDOW, CD_CTX_IMAGE, CD_CTX_DBUFFER, CD_CTX_PRINTER, CD_CTX_EMF, CD_CTX_CLIPBOARD}; +#define NUM_CONTEXTPLUS 6 + +/*************/ +/* utilities */ +/*************/ +int cdRound(double x); +void cdCanvasGetEllipseBox(int xc, int yc, int w, int h, double a1, double a2, int *xmin, int *xmax, int *ymin, int *ymax); +int cdCheckBoxSize(int *xmin, int *xmax, int *ymin, int *ymax); +int cdfCheckBoxSize(double *xmin, double *xmax, double *ymin, double *ymax); +void cdNormalizeLimits(int w, int h, int *xmin, int *xmax, int *ymin, int *ymax); +int cdGetFileName(const char* strdata, char* filename); +int cdStrEqualNoCase(const char* str1, const char* str2); + +#define _cdCheckCanvas(_canvas) (_canvas!=NULL && ((unsigned char*)_canvas)[0] == 'C' && ((unsigned char*)_canvas)[1] == 'D') +#define _cdInvertYAxis(_canvas, _y) (_canvas->h - (_y) - 1) +#define _cdSwapInt(_a,_b) {int _c=_a;_a=_b;_b=_c;} +#define _cdSwapDouble(_a,_b) {double _c=_a;_a=_b;_b=_c;} +#define _cdRound(_x) ((int)(_x < 0? (_x-0.5): (_x+0.5))) +#define _cdRotateHatch(_x) ((_x) = ((_x)<< 1) | ((_x)>>7)) + +/******************/ +/* Transformation */ +/******************/ +void cdMatrixTransformPoint(double* matrix, int x, int y, int *rx, int *ry); +void cdfMatrixTransformPoint(double* matrix, double x, double y, double *rx, double *ry); +void cdMatrixMultiply(const double* matrix, double* mul_matrix); +void cdMatrixInverse(const double* matrix, double* inv_matrix); +void cdRotatePoint(cdCanvas* canvas, int x, int y, int cx, int cy, int *rx, int *ry, double sin_teta, double cos_teta); +void cdRotatePointY(cdCanvas* canvas, int x, int y, int cx, int cy, int *ry, double sin_theta, double cos_theta); +void cdTextTranslatePoint(cdCanvas* canvas, int x, int y, int w, int h, int baseline, int *rx, int *ry); + +/*************/ +/* Fonts */ +/*************/ +int cdParsePangoFont(const char *nativefont, char *type_face, int *style, int *size); +int cdParseIupWinFont(const char *nativefont, char *type_face, int *style, int *size); +int cdParseXWinFont(const char *nativefont, char *type_face, int *style, int *size); +int cdGetFontSizePixels(cdCanvas* canvas, int size); +int cdGetFontSizePoints(cdCanvas* canvas, int size); + +/****************/ +/* For Images */ +/****************/ +unsigned char cdZeroOrderInterpolation(int width, int height, const unsigned char *map, float xl, float yl); +unsigned char cdBilinearInterpolation(int width, int height, const unsigned char *map, float xl, float yl); +void cdImageRGBInitInverseTransform(int w, int h, int xmin, int xmax, int ymin, int ymax, float *xfactor, float *yfactor, const double* matrix, double* inv_matrix); +void cdImageRGBInverseTransform(int t_x, int t_y, float *i_x, float *i_y, float xfactor, float yfactor, int xmin, int ymin, int x, int y, double *inv_matrix); +void cdImageRGBCalcDstLimits(cdCanvas* canvas, int x, int y, int w, int h, int *xmin, int *xmax, int *ymin, int *ymax, int* rect); +void cdRGB2Gray(int width, int height, const unsigned char* red, const unsigned char* green, const unsigned char* blue, unsigned char* index, long *color); + +#define CD_ALPHA_BLEND(_src,_dst,_alpha) (unsigned char)(((_src) * (_alpha) + (_dst) * (255 - (_alpha))) / 255) + +int* cdGetZoomTable(int w, int rw, int xmin); +int cdCalcZoom(int canvas_size, int cnv_rect_pos, int cnv_rect_size, + int *new_cnv_rect_pos, int *new_cnv_rect_size, + int img_rect_pos, int img_rect_size, + int *new_img_rect_pos, int *new_img_rect_size, int is_horizontal); + +/**************/ +/* simulation */ +/**************/ +cdSimulation* cdCreateSimulation(cdCanvas* canvas); +void cdKillSimulation(cdSimulation* simulation); +void cdSimInitText(cdSimulation* simulation); + +/* Replacements for cdCanvas function pointers */ +void cdrectSIM(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, int ymax); +void cdboxSIM(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, int ymax); +void cdlineSIM(cdCtxCanvas* ctxcanvas, int x1, int y1, int x2, int y2); +void cdarcSIM(cdCtxCanvas* ctxcanvas, int xc, int yc, int width, int height, double angle1, double angle2); +void cdsectorSIM(cdCtxCanvas* ctxcanvas, int xc, int yc, int width, int height, double angle1, double angle2); +void cdchordSIM(cdCtxCanvas* ctxcanvas, int xc, int yc, int width, int height, double angle1, double angle2); +void cdpolySIM(cdCtxCanvas* ctxcanvas, int mode, cdPoint* points, int n); + +/* Replacements for Text and Font using FreeType library */ +void cdtextSIM(cdCtxCanvas* ctxcanvas, int x, int y, const char *s); +int cdfontSIM(cdCtxCanvas* ctxcanvas, const char *type_face, int style, int size); +void cdgetfontdimSIM(cdCtxCanvas* ctxcanvas, int *max_width, int *height, int *ascent, int *descent); +void cdgettextsizeSIM(cdCtxCanvas* ctxcanvas, const char *s, int *width, int *height); + +/* Simulation functions that are independent of the simulation base driver */ +void cdSimMark(cdCanvas* canvas, int x, int y); +void cdSimPolyBezier(cdCanvas* canvas, const cdPoint* points, int n); +void cdSimPutImageRectRGBA(cdCanvas* canvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, const unsigned char *a, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax); + +/* Simulation functions that are independent of the simulation base driver, + and does not checks for axis and matrix. + All use the polygon method ->cxFPoly only. */ +void cdfSimPolyBezier(cdCanvas* canvas, const cdfPoint* points, int n); +void cdfSimRect(cdCtxCanvas *ctxcanvas, double xmin, double xmax, double ymin, double ymax); +void cdfSimBox(cdCtxCanvas *ctxcanvas, double xmin, double xmax, double ymin, double ymax); +void cdfSimElipse(cdCtxCanvas* ctxcanvas, double xc, double yc, double width, double height, double angle1, double angle2, int sector); +void cdfSimArc(cdCtxCanvas *ctxcanvas, double xc, double yc, double width, double height, double angle1, double angle2); + +/* Replacements for Font using estimation */ +void cdgetfontdimEX(cdCtxCanvas* ctxcanvas, int *max_width, int *height, int *ascent, int *descent); +void cdgettextsizeEX(cdCtxCanvas* ctxcanvas, const char *s, int *width, int *height); + + +#ifdef __cplusplus +} +#endif + +#endif |