From 7b52cc13af4e85f1ca2deb6b6c77de9c95ea0dcf Mon Sep 17 00:00:00 2001 From: scuri Date: Fri, 17 Oct 2008 06:10:33 +0000 Subject: First commit - moving from LuaForge to SourceForge --- src/cd_attributes.c | 1017 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1017 insertions(+) create mode 100644 src/cd_attributes.c (limited to 'src/cd_attributes.c') diff --git a/src/cd_attributes.c b/src/cd_attributes.c new file mode 100644 index 0000000..7b825e4 --- /dev/null +++ b/src/cd_attributes.c @@ -0,0 +1,1017 @@ +/** \file + * \brief External API + * + * See Copyright Notice in cd.h + */ + +#include +#include +#include +#include +#include +#include +#include + + +#include "cd.h" +#include "cd_private.h" + + +int cdCanvasClip(cdCanvas* canvas, int mode) +{ + int clip_mode; + + assert(canvas); + assert(mode==CD_QUERY || (mode>=CD_CLIPOFF && mode<=CD_CLIPREGION)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (modeCD_CLIPREGION) return CD_ERROR; + + clip_mode = canvas->clip_mode; + + if (mode == CD_QUERY || + mode == clip_mode || + (mode == CD_CLIPPOLYGON && !canvas->clip_poly && !canvas->clip_fpoly)) + return clip_mode; + + if (canvas->cxClip) + canvas->clip_mode = canvas->cxClip(canvas->ctxcanvas, mode); + else + canvas->clip_mode = mode; + + return clip_mode; +} + +void cdCanvasClipArea(cdCanvas* canvas, int xmin, int xmax, int ymin, int ymax) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (!cdCheckBoxSize(&xmin, &xmax, &ymin, &ymax)) + return; + + if (canvas->use_origin) + { + xmin += canvas->origin.x; + xmax += canvas->origin.x; + ymin += canvas->origin.y; + ymax += canvas->origin.y; + } + + if (canvas->invert_yaxis) + { + ymin = _cdInvertYAxis(canvas, ymin); + ymax = _cdInvertYAxis(canvas, ymax); + _cdSwapInt(ymin, ymax); + } + + if (xmin == canvas->clip_rect.xmin && + xmax == canvas->clip_rect.xmax && + ymin == canvas->clip_rect.ymin && + ymax == canvas->clip_rect.ymax) + return; + + if (canvas->cxClipArea) + canvas->cxClipArea(canvas->ctxcanvas, xmin, xmax, ymin, ymax); + else if (canvas->cxFClipArea) + canvas->cxFClipArea(canvas->ctxcanvas, (double)xmin, (double)xmax, (double)ymin, (double)ymax); + + canvas->clip_rect.xmin = xmin; + canvas->clip_rect.xmax = xmax; + canvas->clip_rect.ymin = ymin; + canvas->clip_rect.ymax = ymax; + canvas->clip_frect.xmin = (double)xmin; + canvas->clip_frect.xmax = (double)xmax; + canvas->clip_frect.ymin = (double)ymin; + canvas->clip_frect.ymax = (double)ymax; +} + +int cdCanvasGetClipArea(cdCanvas* canvas, int *xmin, int *xmax, int *ymin, int *ymax) +{ + int _xmin, _xmax, _ymin, _ymax; + + assert(canvas); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + + _xmin = canvas->clip_rect.xmin; + _xmax = canvas->clip_rect.xmax; + _ymin = canvas->clip_rect.ymin; + _ymax = canvas->clip_rect.ymax; + + if (canvas->invert_yaxis) + { + _ymin = _cdInvertYAxis(canvas, _ymin); + _ymax = _cdInvertYAxis(canvas, _ymax); + _cdSwapInt(_ymin, _ymax); + } + + if (canvas->use_origin) + { + _xmin -= canvas->origin.x; + _xmax -= canvas->origin.x; + _ymin -= canvas->origin.y; + _ymax -= canvas->origin.y; + } + + if (xmin) *xmin = _xmin; + if (xmax) *xmax = _xmax; + if (ymin) *ymin = _ymin; + if (ymax) *ymax = _ymax; + + return canvas->clip_mode; +} + +void cdfCanvasClipArea(cdCanvas* canvas, double xmin, double xmax, double ymin, double ymax) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (!cdfCheckBoxSize(&xmin, &xmax, &ymin, &ymax)) + return; + + if (canvas->use_origin) + { + xmin += canvas->forigin.x; + xmax += canvas->forigin.x; + ymin += canvas->forigin.y; + ymax += canvas->forigin.y; + } + + if (canvas->invert_yaxis) + { + ymin = _cdInvertYAxis(canvas, ymin); + ymax = _cdInvertYAxis(canvas, ymax); + _cdSwapDouble(ymin, ymax); + } + + if (xmin == canvas->clip_frect.xmin && + xmax == canvas->clip_frect.xmax && + ymin == canvas->clip_frect.ymin && + ymax == canvas->clip_frect.ymax) + return; + + if (canvas->cxFClipArea) + canvas->cxFClipArea(canvas->ctxcanvas, xmin, xmax, ymin, ymax); + else if (canvas->cxClipArea) + canvas->cxClipArea(canvas->ctxcanvas, _cdRound(xmin), _cdRound(xmax), _cdRound(ymin), _cdRound(ymax)); + + canvas->clip_frect.xmin = xmin; + canvas->clip_frect.xmax = xmax; + canvas->clip_frect.ymin = ymin; + canvas->clip_frect.ymax = ymax; + canvas->clip_rect.xmin = _cdRound(xmin); + canvas->clip_rect.xmax = _cdRound(xmax); + canvas->clip_rect.ymin = _cdRound(ymin); + canvas->clip_rect.ymax = _cdRound(ymax); +} + +int cdfCanvasGetClipArea(cdCanvas* canvas, double *xmin, double *xmax, double *ymin, double *ymax) +{ + double _xmin, _xmax, _ymin, _ymax; + + assert(canvas); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + + _xmin = canvas->clip_frect.xmin; + _xmax = canvas->clip_frect.xmax; + _ymin = canvas->clip_frect.ymin; + _ymax = canvas->clip_frect.ymax; + + if (canvas->invert_yaxis) + { + _ymin = _cdInvertYAxis(canvas, _ymin); + _ymax = _cdInvertYAxis(canvas, _ymax); + _cdSwapDouble(_ymin, _ymax); + } + + if (canvas->use_origin) + { + _xmin -= canvas->forigin.x; + _xmax -= canvas->forigin.x; + _ymin -= canvas->forigin.y; + _ymax -= canvas->forigin.y; + } + + if (xmin) *xmin = _xmin; + if (xmax) *xmax = _xmax; + if (ymin) *ymin = _ymin; + if (ymax) *ymax = _ymax; + + return canvas->clip_mode; +} + +int cdCanvasIsPointInRegion(cdCanvas* canvas, int x, int y) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas) || !canvas->cxIsPointInRegion) return CD_ERROR; + + if (canvas->use_origin) + { + x += canvas->origin.x; + y += canvas->origin.y; + } + + if (canvas->invert_yaxis) + y = _cdInvertYAxis(canvas, y); + + return canvas->cxIsPointInRegion(canvas->ctxcanvas, x, y); +} + +void cdCanvasOffsetRegion(cdCanvas* canvas, int x, int y) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas) || !canvas->cxOffsetRegion) return; + + if (canvas->invert_yaxis) + y = -y; + + canvas->cxOffsetRegion(canvas->ctxcanvas, x, y); +} + +void cdCanvasGetRegionBox(cdCanvas* canvas, int *xmin, int *xmax, int *ymin, int *ymax) +{ + int _xmin, _xmax, _ymin, _ymax; + assert(canvas); + if (!_cdCheckCanvas(canvas) || !canvas->cxGetRegionBox) return; + + canvas->cxGetRegionBox(canvas->ctxcanvas, &_xmin, &_xmax, &_ymin, &_ymax); + + if (canvas->invert_yaxis) + { + _ymin = _cdInvertYAxis(canvas, _ymin); + _ymax = _cdInvertYAxis(canvas, _ymax); + _cdSwapInt(_ymin, _ymax); + } + + if (canvas->use_origin) + { + _xmin -= canvas->origin.x; + _xmax -= canvas->origin.x; + _ymin -= canvas->origin.y; + _ymax -= canvas->origin.y; + } + + if (xmin) *xmin = _xmin; + if (xmax) *xmax = _xmax; + if (ymin) *ymin = _ymin; + if (ymax) *ymax = _ymax; +} + +void cdCanvasOrigin(cdCanvas* canvas, int x, int y) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + canvas->origin.x = x; + canvas->origin.y = y; + + if (canvas->origin.x == 0 && canvas->origin.y == 0) + canvas->use_origin = 0; + else + canvas->use_origin = 1; + + canvas->forigin.x = (double)canvas->origin.x; + canvas->forigin.y = (double)canvas->origin.y; +} + + +void cdfCanvasOrigin(cdCanvas* canvas, double x, double y) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + canvas->forigin.x = x; + canvas->forigin.y = y; + + if (canvas->forigin.x == 0 && canvas->forigin.y == 0) + canvas->use_origin = 0; + else + canvas->use_origin = 1; + + canvas->origin.x = _cdRound(canvas->forigin.x); + canvas->origin.y = _cdRound(canvas->forigin.y); +} + +void cdCanvasGetOrigin(cdCanvas* canvas, int *x, int *y) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (x) *x = canvas->origin.x; + if (y) *y = canvas->origin.y; +} + +void cdfCanvasGetOrigin(cdCanvas* canvas, double *x, double *y) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (x) *x = canvas->forigin.x; + if (y) *y = canvas->forigin.y; +} + +#define CD_TRANSFORM_X(_x, _y, _matrix) (_x*_matrix[0] + _y*_matrix[2] + _matrix[4]) +#define CD_TRANSFORM_Y(_x, _y, _matrix) (_x*_matrix[1] + _y*_matrix[3] + _matrix[5]) + +void cdfMatrixTransformPoint(double* matrix, double x, double y, double *rx, double *ry) +{ + *rx = CD_TRANSFORM_X(x, y, matrix); + *ry = CD_TRANSFORM_Y(x, y, matrix); +} + +void cdMatrixTransformPoint(double* matrix, int x, int y, int *rx, int *ry) +{ + double t; + t = CD_TRANSFORM_X(x, y, matrix); *rx = _cdRound(t); + t = CD_TRANSFORM_Y(x, y, matrix); *ry = _cdRound(t); +} + +void cdCanvasTransformPoint(cdCanvas* canvas, int x, int y, int *tx, int *ty) +{ + double *matrix; + double t; + + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + matrix = canvas->matrix; + t = CD_TRANSFORM_X(x, y, matrix); *tx = _cdRound(t); + t = CD_TRANSFORM_Y(x, y, matrix); *ty = _cdRound(t); +} + +void cdfCanvasTransformPoint(cdCanvas* canvas, double x, double y, double *tx, double *ty) +{ + double *matrix; + + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + matrix = canvas->matrix; + *tx = CD_TRANSFORM_X(x, y, matrix); + *ty = CD_TRANSFORM_Y(x, y, matrix); +} + +void cdMatrixInverse(const double* matrix, double* inv_matrix) +{ + double det = matrix[0] * matrix[3] - matrix[1] * matrix[2]; + + if (fabs(det) < 0.00001) + { + inv_matrix[0] = 1; + inv_matrix[1] = 0; + inv_matrix[2] = 0; + inv_matrix[3] = 1; + inv_matrix[4] = 0; + inv_matrix[5] = 0; + return; + } + + inv_matrix[0] = matrix[3]/det; + inv_matrix[1] = -matrix[1]/det; + inv_matrix[2] = -matrix[2]/det; + inv_matrix[3] = matrix[0]/det; + inv_matrix[4] = -(matrix[4] * inv_matrix[0] + matrix[5] * inv_matrix[2]); + inv_matrix[5] = -(matrix[4] * inv_matrix[1] + matrix[5] * inv_matrix[3]); +} + +#define _cdIsIndentity(_matrix) (_matrix[0] == 1 && _matrix[1] == 0 && \ + _matrix[2] == 0 && _matrix[3] == 1 && \ + _matrix[4] == 0 && _matrix[5] == 0) + +double* cdCanvasGetTransform(cdCanvas* canvas) +{ + static double matrix[6]; + + assert(canvas); + if (!_cdCheckCanvas(canvas)) return NULL; + + memcpy(matrix, canvas->matrix, sizeof(double)*6); + return matrix; +} + +void cdCanvasTransform(cdCanvas* canvas, const double* matrix) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (!matrix || _cdIsIndentity(matrix)) + { + canvas->use_matrix = 0; + memset(canvas->matrix, 0, sizeof(double)*6); + canvas->matrix[0] = 1; /* reset to identity */ + canvas->matrix[3] = 1; + + if (canvas->cxTransform) + canvas->cxTransform(canvas->ctxcanvas, NULL); + + return; + } + + if (canvas->cxTransform) + canvas->cxTransform(canvas->ctxcanvas, matrix); + + memcpy(canvas->matrix, matrix, sizeof(double)*6); + canvas->use_matrix = 1; +} + +/* mul_matrix = matrix * mul_matrix (left multiply) */ +void cdMatrixMultiply(const double* matrix, double* mul_matrix) +{ + double tmp_matrix[6]; + tmp_matrix[0] = matrix[0] * mul_matrix[0] + matrix[1] * mul_matrix[2]; + tmp_matrix[1] = matrix[0] * mul_matrix[1] + matrix[1] * mul_matrix[3]; + tmp_matrix[2] = matrix[2] * mul_matrix[0] + matrix[3] * mul_matrix[2]; + tmp_matrix[3] = matrix[2] * mul_matrix[1] + matrix[3] * mul_matrix[3]; + tmp_matrix[4] = matrix[4] * mul_matrix[0] + matrix[5] * mul_matrix[2] + mul_matrix[4]; + tmp_matrix[5] = matrix[4] * mul_matrix[1] + matrix[5] * mul_matrix[3] + mul_matrix[5]; + + memcpy(mul_matrix, tmp_matrix, sizeof(double)*6); +} + +void cdCanvasTransformMultiply(cdCanvas* canvas, const double* matrix) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + cdMatrixMultiply(matrix, canvas->matrix); + + if (_cdIsIndentity(canvas->matrix)) + canvas->use_matrix = 0; + else + canvas->use_matrix = 1; + + if (canvas->cxTransform) + canvas->cxTransform(canvas->ctxcanvas, canvas->use_matrix? canvas->matrix: NULL); +} + +void cdCanvasTransformRotate(cdCanvas* canvas, double angle) +{ + double tmp_matrix[4]; + double* matrix, cos_ang, sin_ang; + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + matrix = canvas->matrix; + + cos_ang = cos(angle * CD_DEG2RAD); + sin_ang = sin(angle * CD_DEG2RAD); + + tmp_matrix[0] = cos_ang * matrix[0] + sin_ang * matrix[2]; + tmp_matrix[1] = cos_ang * matrix[1] + sin_ang * matrix[3]; + tmp_matrix[2] = -sin_ang * matrix[0] + cos_ang * matrix[2]; + tmp_matrix[3] = -sin_ang * matrix[1] + cos_ang * matrix[3]; + + matrix[0] = tmp_matrix[0]; + matrix[1] = tmp_matrix[1]; + matrix[2] = tmp_matrix[2]; + matrix[3] = tmp_matrix[3]; + + if (_cdIsIndentity(matrix)) + canvas->use_matrix = 0; + else + canvas->use_matrix = 1; + + if (canvas->cxTransform) + canvas->cxTransform(canvas->ctxcanvas, canvas->use_matrix? matrix: NULL); +} + +void cdCanvasTransformScale(cdCanvas* canvas, double sx, double sy) +{ + double* matrix; + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + matrix = canvas->matrix; + + matrix[0] = sx * matrix[0]; + matrix[1] = sx * matrix[1]; + matrix[2] = sy * matrix[2]; + matrix[3] = sy * matrix[3]; + + if (_cdIsIndentity(matrix)) + canvas->use_matrix = 0; + else + canvas->use_matrix = 1; + + if (canvas->cxTransform) + canvas->cxTransform(canvas->ctxcanvas, canvas->use_matrix? matrix: NULL); +} + +void cdCanvasTransformTranslate(cdCanvas* canvas, double dx, double dy) +{ + double* matrix; + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + matrix = canvas->matrix; + + matrix[4] = dx * matrix[0] + dy * matrix[2] + matrix[4]; + matrix[5] = dx * matrix[1] + dy * matrix[3] + matrix[5]; + + if (_cdIsIndentity(matrix)) + canvas->use_matrix = 0; + else + canvas->use_matrix = 1; + + if (canvas->cxTransform) + canvas->cxTransform(canvas->ctxcanvas, canvas->use_matrix? matrix: NULL); +} + +int cdCanvasBackOpacity(cdCanvas* canvas, int opacity) +{ + int back_opacity; + + assert(canvas); + assert(opacity==CD_QUERY || (opacity>=CD_OPAQUE && opacity<=CD_TRANSPARENT)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (opacityCD_TRANSPARENT) return CD_ERROR; + + back_opacity = canvas->back_opacity; + + if (opacity == CD_QUERY || opacity == back_opacity) + return back_opacity; + + if (canvas->cxBackOpacity) + canvas->back_opacity = canvas->cxBackOpacity(canvas->ctxcanvas, opacity); + else + canvas->back_opacity = opacity; + + return back_opacity; +} + +int cdCanvasWriteMode(cdCanvas* canvas, int mode) +{ + int write_mode; + + assert(canvas); + assert(mode==CD_QUERY || (mode>=CD_REPLACE && mode<=CD_NOT_XOR)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (modeCD_NOT_XOR) return CD_ERROR; + + write_mode = canvas->write_mode; + + if (mode == CD_QUERY || mode == write_mode) + return write_mode; + + if (canvas->cxWriteMode) + canvas->write_mode = canvas->cxWriteMode(canvas->ctxcanvas, mode); + else + canvas->write_mode = mode; + + return write_mode; +} + +int cdCanvasLineStyle(cdCanvas* canvas, int style) +{ + int line_style; + + assert(canvas); + assert(style==CD_QUERY || (style>=CD_CONTINUOUS && style<=CD_CUSTOM)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (styleCD_CUSTOM) return CD_ERROR; + + line_style = canvas->line_style; + + if (style == CD_QUERY || style == line_style) + return line_style; + + if (style == CD_CUSTOM && !canvas->line_dashes_count) + return line_style; + + if (canvas->cxLineStyle) + canvas->line_style = canvas->cxLineStyle(canvas->ctxcanvas, style); + else + canvas->line_style = style; + + return line_style; +} + +int cdCanvasLineJoin(cdCanvas* canvas, int join) +{ + int line_join; + + assert(canvas); + assert(join==CD_QUERY || (join>=CD_MITER && join<=CD_ROUND)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (joinCD_ROUND) return CD_ERROR; + + line_join = canvas->line_join; + + if (join == CD_QUERY || join == line_join) + return line_join; + + if (canvas->cxLineJoin) + canvas->line_join = canvas->cxLineJoin(canvas->ctxcanvas, join); + else + canvas->line_join = join; + + return line_join; +} + +int cdCanvasLineCap(cdCanvas* canvas, int cap) +{ + int line_cap; + + assert(canvas); + assert(cap==CD_QUERY || (cap>=CD_CAPFLAT && cap<=CD_CAPROUND)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (capCD_CAPROUND) return CD_ERROR; + + line_cap = canvas->line_cap; + + if (cap == CD_QUERY || cap == line_cap) + return line_cap; + + if (canvas->cxLineCap) + canvas->line_cap = canvas->cxLineCap(canvas->ctxcanvas, cap); + else + canvas->line_cap = cap; + + return line_cap; +} + +int cdCanvasRegionCombineMode(cdCanvas* canvas, int mode) +{ + int combine_mode; + + assert(canvas); + assert(mode==CD_QUERY || (mode>=CD_UNION && mode<=CD_NOTINTERSECT)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (modeCD_NOTINTERSECT) return CD_ERROR; + + combine_mode = canvas->combine_mode; + + if (mode == CD_QUERY || mode == combine_mode) + return combine_mode; + + canvas->combine_mode = mode; + + return combine_mode; +} + +void cdCanvasLineStyleDashes(cdCanvas* canvas, const int* dashes, int count) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (canvas->line_dashes) + { + free(canvas->line_dashes); + canvas->line_dashes = NULL; + } + + if (dashes) + { + canvas->line_dashes = malloc(count*sizeof(int)); + canvas->line_dashes_count = count; + memcpy(canvas->line_dashes, dashes, count*sizeof(int)); + } +} + +int cdCanvasLineWidth(cdCanvas* canvas, int width) +{ + int line_width; + + assert(canvas); + assert(width==CD_QUERY || width>0); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (width!=CD_QUERY && width<=0) return CD_ERROR; + + line_width = canvas->line_width; + + if (width == CD_QUERY || width == line_width) + return line_width; + + if (canvas->cxLineWidth) + canvas->line_width = canvas->cxLineWidth(canvas->ctxcanvas, width); + else + canvas->line_width = width; + + return line_width; +} + +int cdCanvasFillMode(cdCanvas* canvas, int mode) +{ + int fill_mode; + + assert(canvas); + assert(mode==CD_QUERY || (mode>=CD_EVENODD && mode<=CD_WINDING)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (modeCD_WINDING) return CD_ERROR; + + fill_mode = canvas->fill_mode; + + if (mode == CD_QUERY || mode == fill_mode) + return fill_mode; + + canvas->fill_mode = mode; + + return fill_mode; +} + +int cdCanvasInteriorStyle (cdCanvas* canvas, int style) +{ + int interior_style; + + assert(canvas); + assert(style==CD_QUERY || (style>=CD_SOLID && style<=CD_HOLLOW)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (styleCD_HOLLOW) return CD_ERROR; + + interior_style = canvas->interior_style; + + if ( style == CD_QUERY || style == interior_style) + return interior_style; + + if ((style == CD_PATTERN && !canvas->pattern_size) || + (style == CD_STIPPLE && !canvas->stipple_size)) + return interior_style; + + if (style == CD_HOLLOW) + { + canvas->interior_style = CD_HOLLOW; + return interior_style; + } + + if (canvas->cxInteriorStyle) + canvas->interior_style = canvas->cxInteriorStyle(canvas->ctxcanvas, style); + else + canvas->interior_style = style; + + return interior_style; +} + +int cdCanvasHatch(cdCanvas* canvas, int style) +{ + int hatch_style; + + assert(canvas); + assert(style==CD_QUERY || (style>=CD_HORIZONTAL && style<=CD_DIAGCROSS)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (styleCD_DIAGCROSS) return CD_ERROR; + + hatch_style = canvas->hatch_style; + + if (style == CD_QUERY) + return hatch_style; + + if (canvas->cxHatch) + canvas->hatch_style = canvas->cxHatch(canvas->ctxcanvas, style); + else + canvas->hatch_style = style; + + canvas->interior_style = CD_HATCH; + + return hatch_style; +} + +void cdCanvasStipple(cdCanvas* canvas, int w, int h, const unsigned char *stipple) +{ + assert(canvas); + assert(stipple); + assert(w>0); + assert(h>0); + if (!_cdCheckCanvas(canvas)) return; + if (w <= 0 || h <= 0 || !stipple) + return; + + if (canvas->cxStipple) + canvas->cxStipple(canvas->ctxcanvas, w, h, stipple); + + if (w*h > canvas->stipple_size) /* realoca array dos pontos */ + { + int newsize = w*h; + canvas->stipple = (unsigned char*)realloc(canvas->stipple, newsize); + canvas->stipple_size = newsize; + + if (!canvas->stipple) + { + canvas->stipple_size = 0; + return; + } + } + + memcpy(canvas->stipple, stipple, w*h); + + canvas->interior_style = CD_STIPPLE; + canvas->stipple_w = w; + canvas->stipple_h = h; +} + +unsigned char* cdCanvasGetStipple(cdCanvas* canvas, int* w, int* h) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return NULL; + + if (!canvas->stipple_size) + return NULL; + + if (w) *w = canvas->stipple_w; + if (h) *h = canvas->stipple_h; + + return canvas->stipple; +} + +void cdCanvasPattern(cdCanvas* canvas, int w, int h, const long *pattern) +{ + assert(canvas); + assert(pattern); + assert(w>0); + assert(h>0); + if (!_cdCheckCanvas(canvas)) return; + if (w <= 0 || h <= 0 || !pattern) + return; + + if (canvas->cxPattern) + canvas->cxPattern(canvas->ctxcanvas, w, h, pattern); + + if (w*h > canvas->pattern_size) /* realoca array dos pontos */ + { + int newsize = w*h; + + if (canvas->pattern) free(canvas->pattern); + canvas->pattern = (long*)malloc(newsize*sizeof(long)); + canvas->pattern_size = newsize; + + if (!canvas->pattern) + { + canvas->pattern_size = 0; + return; + } + } + + memcpy(canvas->pattern, pattern, w*h*sizeof(long)); + + canvas->interior_style = CD_PATTERN; + canvas->pattern_w = w; + canvas->pattern_h = h; +} + +long * cdCanvasGetPattern(cdCanvas* canvas, int* w, int* h) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return NULL; + + if (!canvas->pattern_size) + return NULL; + + if (w) *w = canvas->pattern_w; + if (h) *h = canvas->pattern_h; + + return canvas->pattern; +} + +int cdCanvasMarkType(cdCanvas* canvas, int type) +{ + int mark_type; + + assert(canvas); + assert(type==CD_QUERY || (type>=CD_PLUS && type<=CD_HOLLOW_DIAMOND)); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (typeCD_HOLLOW_DIAMOND) return CD_ERROR; + + mark_type = canvas->mark_type; + + if (type == CD_QUERY || type == mark_type) + return mark_type; + + canvas->mark_type = type; + + return mark_type; +} + +int cdCanvasMarkSize(cdCanvas* canvas, int size) +{ + int mark_size; + + assert(canvas); + assert(size == CD_QUERY || size>0); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + if (size != CD_QUERY && size<=0) return CD_ERROR; + + mark_size = canvas->mark_size; + + if (size == CD_QUERY || size == mark_size) + return mark_size; + + canvas->mark_size = size; + + return mark_size; +} + +long cdCanvasBackground(cdCanvas* canvas, long color) +{ + long background; + + assert(canvas); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + + background = canvas->background; + + if (color == CD_QUERY || color == background) + return background; + + if (canvas->cxBackground) + canvas->background = canvas->cxBackground(canvas->ctxcanvas, color); + else + canvas->background = color; + + return background; +} + +long cdCanvasForeground(cdCanvas* canvas, long color) +{ + long foreground; + + assert(canvas); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + + foreground = canvas->foreground; + + if (color == CD_QUERY || color == foreground) + return foreground; + + if (canvas->cxForeground) + canvas->foreground = canvas->cxForeground(canvas->ctxcanvas, color); + else + canvas->foreground = color; + + return foreground; +} + +void cdCanvasSetBackground(cdCanvas* canvas, long color) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (color == canvas->background) + return; + + if (canvas->cxBackground) + canvas->background = canvas->cxBackground(canvas->ctxcanvas, color); + else + canvas->background = color; +} + +void cdCanvasSetForeground(cdCanvas* canvas, long color) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return; + + if (color == canvas->foreground) + return; + + if (canvas->cxForeground) + canvas->foreground = canvas->cxForeground(canvas->ctxcanvas, color); + else + canvas->foreground = color; +} + +/****************/ +/* color coding */ +/****************/ + +long cdEncodeColor(unsigned char r, unsigned char g, unsigned char b) +{ + return (((unsigned long)r) << 16) | + (((unsigned long)g) << 8) | + (((unsigned long)b) << 0); +} + +void cdDecodeColor(long color, unsigned char *r, unsigned char *g, unsigned char *b) +{ + *r = cdRed(color); + *g = cdGreen(color); + *b = cdBlue(color); +} + +unsigned char cdDecodeAlpha(long color) +{ + unsigned char alpha = cdReserved(color); + return ~alpha; +} + +long cdEncodeAlpha(long color, unsigned char alpha) +{ + alpha = ~alpha; + return (((unsigned long)alpha) << 24) | (color & 0xFFFFFF); +} + +int cdCanvasGetColorPlanes(cdCanvas* canvas) +{ + assert(canvas); + if (!_cdCheckCanvas(canvas)) return CD_ERROR; + return canvas->bpp; +} + +void cdCanvasPalette(cdCanvas* canvas, int n, const long *palette, int mode) +{ + assert(canvas); + assert(n>0); + assert(palette); + assert(mode>=CD_POLITE && mode<=CD_FORCE); + if (!_cdCheckCanvas(canvas)) return; + if (!palette) return; + if (n <= 0 || canvas->bpp > 8) + return; + + if (canvas->cxPalette) + canvas->cxPalette(canvas->ctxcanvas, n, palette, mode); +} + -- cgit v1.2.3