MadButterfly: src/graph_engine

annotate src/graph_engine_cairo.c @ 1260:bbd6bc0d079a

Fix bug of removing layer. - It removes content of all layers. - Only specified layer should be removed.

author	Thinker K.F. Li <thinker@codemud.net>
date	Tue, 11 Jan 2011 17:57:11 +0800
parents	851a062368bd
children

rev	line source
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	1 // -- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; --
586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	2 // vim: sw=4:ts=8:sts=4
1110 851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	3 #include <X11/Xlib.h>
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	4 #include <fontconfig/fontconfig.h>
480 e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	5 #include <cairo-ft.h>
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	6 #include "mb_graph_engine_cairo.h"
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	7 #include "mb_shapes.h"
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	8
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	9 #ifndef ASSERT
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	10 #define ASSERT(x)
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	11 #endif
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	12
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	13 /*! \brief Find out a font pattern.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	14 *
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	15 * This function use fontconfig to decide a font file in pattern. It can
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	16 * replaced by other mechanism if you think it is not what you want.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	17 *
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	18 * \param slant make font prune if it it non-zero.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	19 * \param weight make font normal if it is 100.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	20 */
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	21 static
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	22 FcPattern query_font_pattern(const char family, int slant, int weight) {
901 74e3ba4d3fa1 Fix issue of unworking text style. Thinker K.F. Li <thinker@codemud.net> parents: 822 diff changeset	23 FcPattern ptn, fn_ptn;
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	24 FcValue val;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	25 FcConfig *cfg;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	26 FcBool r;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	27 FcResult result;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	28 static int slant_map[] = { /* from MB_FONT_SLANT_* to FC_SLANT_* */
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	29 FC_SLANT_ROMAN,
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	30 FC_SLANT_ROMAN,
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	31 FC_SLANT_ITALIC,
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	32 FC_SLANT_OBLIQUE};
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	33
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	34 cfg = FcConfigGetCurrent();
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	35 ptn = FcPatternCreate();
901 74e3ba4d3fa1 Fix issue of unworking text style. Thinker K.F. Li <thinker@codemud.net> parents: 822 diff changeset	36 if(ptn == NULL)
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	37 goto err;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	39 val.type = FcTypeString;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	40 val.u.s = family;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	41 FcPatternAdd(ptn, "family", val, FcTrue);
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	42
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	43 val.type = FcTypeInteger;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	44 val.u.i = slant_map[slant];
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	45 FcPatternAdd(ptn, "slant", val, FcTrue);
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	46
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	47 val.type = FcTypeInteger;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	48 val.u.i = weight;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49 FcPatternAdd(ptn, "weight", val, FcTrue);
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	50
901 74e3ba4d3fa1 Fix issue of unworking text style. Thinker K.F. Li <thinker@codemud.net> parents: 822 diff changeset	51 FcDefaultSubstitute(ptn);
74e3ba4d3fa1 Fix issue of unworking text style. Thinker K.F. Li <thinker@codemud.net> parents: 822 diff changeset	52
74e3ba4d3fa1 Fix issue of unworking text style. Thinker K.F. Li <thinker@codemud.net> parents: 822 diff changeset	53 r = FcConfigSubstituteWithPat(cfg, ptn, ptn, FcMatchPattern);
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	54 if(!r)
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	55 goto err;
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	56
901 74e3ba4d3fa1 Fix issue of unworking text style. Thinker K.F. Li <thinker@codemud.net> parents: 822 diff changeset	57 r = FcConfigSubstituteWithPat(cfg, ptn, ptn, FcMatchFont);
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	58 if(!r)
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	59 goto err;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	60
901 74e3ba4d3fa1 Fix issue of unworking text style. Thinker K.F. Li <thinker@codemud.net> parents: 822 diff changeset	61 fn_ptn = FcFontMatch(cfg, ptn, &result);
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	62
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	63 /* It is supposed to return FcResultMatch. But, it is no, now.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	64 * I don't know why. Someone should figure out the issue.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	65 */
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	66 #if 0
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	67 if(result != FcResultMatch) {
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	68 printf("%d %d\n", result, FcResultMatch);
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	69 goto err;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	70 }
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	71 #endif
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	72 if(fn_ptn == NULL)
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	73 goto err;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	74
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	75 FcPatternDestroy(ptn);
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	76
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	77 return fn_ptn;
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	78
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	79 err:
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	80 if(ptn)
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	81 FcPatternDestroy(ptn);
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	82 return NULL;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	83
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	84 }
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	85
1110 851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	86 extern mbe_surface_t *
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	87 mbe_win_surface_create(void display, void drawable,
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	88 int fmt, int width, int height) {
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	89 XWindowAttributes attrs;
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	90 mbe_surface_t *surf;
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	91 int r;
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	92
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	93 r = XGetWindowAttributes((Display *)display, (Drawable)drawable, &attrs);
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	94 if(r == 0)
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	95 return NULL;
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	96
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	97 surf = cairo_xlib_surface_create((Display *)display, (Drawable)drawable,
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	98 attrs.visual, width, height);
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	99
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	100 return surf;
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	101 }
851a062368bd Change signature of mbe_win_surface_create() by using format argument Thinker K.F. Li <thinker@codemud.net> parents: 1101 diff changeset	102
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	103 /*! \brief Find out a font face for a pattern specified.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	104 *
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	105 * The pattern, here, is a vector of family, slant, and weight.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	106 * This function base on fontconfig and cairo FreeType font supporting.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	107 * You can replace this function with other font mechanisms.
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	108 */
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	109 mbe_font_face_t *
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	110 mbe_query_font_face(const char *family, int slant, int weight) {
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	111 mbe_font_face_t *cface;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	112 FcPattern *ptn;
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	113
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	114 ptn = query_font_pattern(family, slant, weight);
469 4dc0be6c044a Add copy and clear graphic engine functions. Thinker K.F. Li <thinker@branda.to> parents: 465 diff changeset	115 cface = cairo_ft_font_face_create_for_pattern(ptn);
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	116 FcPatternDestroy(ptn);
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	117
465 d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	118 return cface;
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	119 }
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	120
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	121 void
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122 mbe_free_font_face(mbe_font_face_t *face) {
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123 ASSERT(face == NULL);
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	124
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	125 mbe_font_face_destroy(face);
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	126 }
d8181696b689 Move functions into graphic engine layers. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	127
480 e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	128 mbe_pattern_t *
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	129 mbe_pattern_create_radial(co_aix cx0, co_aix cy0, co_aix radius0,
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	130 co_aix cx1, co_aix cy1, co_aix radius1,
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	131 grad_stop_t *stops, int stop_cnt) {
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	132 cairo_pattern_t *ptn;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	133 grad_stop_t *stop;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	134 int i;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	135
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	136 ptn = cairo_pattern_create_radial(cx0, cy0, radius0,
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	137 cx1, cy1, radius1);
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	138 if(ptn == NULL)
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	139 return NULL;
822 586e50f82c1f Unify coding style tag for emacs and vim. Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com> parents: 480 diff changeset	140
480 e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	141 stop = stops;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	142 for(i = 0; i < stop_cnt; i++) {
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	143 cairo_pattern_add_color_stop_rgba(ptn, stop->offset,
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	144 stop->r, stop->g, stop->b, stop->a);
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	145 stop++;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	146 }
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	147
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	148 return ptn;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	149 }
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	150
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	151 mbe_pattern_t *
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	152 mbe_pattern_create_linear(co_aix x0, co_aix y0, co_aix x1, co_aix y1,
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	153 grad_stop_t *stops, int stop_cnt) {
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	154 cairo_pattern_t *ptn;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	155 grad_stop_t *stop;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	156 int i;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	157
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	158 ptn = cairo_pattern_create_linear(x0, y0, x1, y1);
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	159 if(ptn == NULL)
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	160 return NULL;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	161
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	162 stop = stops;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	163 for(i = 0; i < stop_cnt; i++) {
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	164 cairo_pattern_add_color_stop_rgba(ptn, stop->offset,
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	165 stop->r, stop->g, stop->b, stop->a);
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	166 stop++;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	167 }
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	168
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	169 return ptn;
e813ac222f48 Merge add colors into constructor of gradient pattern. Thinker K.F. Li <thinker@branda.to> parents: 469 diff changeset	170 }
1073 d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	171
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	172 mbe_pattern_t *
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	173 mbe_pattern_create_image(mb_img_data_t *img) {
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	174 cairo_surface_t *surf;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	175 cairo_pattern_t *ptn;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	176 cairo_format_t fmt;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	177
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	178 switch(img->fmt) {
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	179 case MB_IFMT_ARGB32:
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	180 fmt = CAIRO_FORMAT_ARGB32;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	181 break;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	182
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	183 case MB_IFMT_RGB24:
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	184 fmt = CAIRO_FORMAT_RGB24;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	185 break;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	186
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	187 case MB_IFMT_A8:
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	188 fmt = CAIRO_FORMAT_A8;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	189 break;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	190
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	191 case MB_IFMT_A1:
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	192 fmt = CAIRO_FORMAT_A1;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	193 break;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	194
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	195 case MB_IFMT_RGB16_565:
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	196 fmt = CAIRO_FORMAT_RGB16_565;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	197 break;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	198
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	199 default:
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	200 return NULL;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	201 }
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	202
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	203 surf = cairo_image_surface_create_for_data(img->content, fmt,
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	204 img->w, img->h, img->stride);
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	205 ptn = cairo_pattern_create_for_surface(surf);
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	206 cairo_surface_destroy(surf);
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	207
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	208 return ptn;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	209 }
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	210
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	211 void
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	212 mbe_scissoring(mbe_t canvas, int n_areas, area_t *areas) {
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	213 area_t *area;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	214 int i;
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	215
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	216 cairo_new_path(canvas);
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	217
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	218 for(i = 0; i < n_areas; i++) {
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	219 area = areas[i];
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	220 cairo_rectangle(canvas, area->x, area->y, area->w, area->h);
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	221 }
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	222
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	223 cairo_clip(canvas);
d09f603438d8 Merge the work of improvement for graphic engine of openvg branch Thinker K.F. Li <thinker@codemud.net> parents: 1067 diff changeset	224 }
1101 e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	225
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	226 void
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	227 mbe_copy_source(mbe_t src, mbe_t dst) {
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	228 cairo_operator_t saved_op;
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	229 cairo_surface_t *surf;
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	230 cairo_pattern_t *ptn;
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	231
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	232 surf = cairo_get_target(src);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	233 ptn = cairo_pattern_create_for_surface(surf);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	234 cairo_set_source(dst, ptn);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	235 cairo_pattern_destroy(ptn);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	236 saved_op = cairo_get_operator(dst);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	237 cairo_set_operator(dst, CAIRO_OPERATOR_SOURCE);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	238 cairo_paint(dst);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	239 cairo_set_operator(dst, saved_op);
e1a76d10953e Fix black window output for Cairo graphic engine. Thinker K.F. Li <thinker@codemud.net> parents: 1073 diff changeset	240 }

Mercurial > MadButterfly

annotate src/graph_engine_cairo.c @ 1260:bbd6bc0d079a