MadButterfly: src/paint.c annotate

annotate src/paint.c @ 147:995ee8fd5f1a

Use local static variable to hold position array to reduce using malloc().

author	Thinker K.F. Li <thinker@branda.to>
date	Thu, 25 Sep 2008 10:10:32 +0800
parents	e96a584487af
children	6ce68c1f7405

rev	line source
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	1 #include <stdio.h>
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	2 #include <stdlib.h>
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	3 #include <cairo.h>
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	4 #include "paint.h"
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	5
55 01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	6 #define ASSERT(x)
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	7
23 56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	8 /*! \brief Solid color paint.
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	9 */
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	10 typedef struct _paint_color {
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	11 paint_t paint;
21 83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	12 co_comp_t r, g, b, a;
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	13 redraw_man_t *rdman;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	14 } paint_color_t;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	15
147 995ee8fd5f1a Use local static variable to hold position array to reduce using malloc(). Thinker K.F. Li <thinker@branda.to> parents: 146 diff changeset	16 int _paint_color_size = sizeof(paint_color_t);
146 e96a584487af Use elmpool to manage paint_color_t objects. Thinker K.F. Li <thinker@branda.to> parents: 58 diff changeset	17
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	18
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	19 static void paint_color_prepare(paint_t paint, cairo_t cr) {
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	20 paint_color_t color = (paint_color_t )paint;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	21
21 83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	22 cairo_set_source_rgba(cr, color->r, color->g, color->b, color->a);
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	23 }
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	24
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	25 static void paint_color_free(paint_t *paint) {
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	26 paint_color_t color = (paint_color_t )paint;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	27
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	28 shnode_list_free(color->rdman, paint->members);
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	29 free(paint);
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	30 }
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	31
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	32 paint_t paint_color_new(redraw_man_t rdman,
21 83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	33 co_comp_t r, co_comp_t g,
83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	34 co_comp_t b, co_comp_t a) {
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	35 paint_color_t *color;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	36
146 e96a584487af Use elmpool to manage paint_color_t objects. Thinker K.F. Li <thinker@branda.to> parents: 58 diff changeset	37 color = (paint_color_t *)elmpool_elm_alloc(rdman->paint_color_pool);
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38 if(color == NULL)
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	39 return NULL;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	40 color->rdman = rdman;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	41 color->r = r;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	42 color->g = g;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	43 color->b = b;
21 83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	44 color->a = a;
19 cf6d65398619 More animation demo Thinker K.F. Li <thinker@branda.to> parents: 18 diff changeset	45 paint_init(&color->paint, paint_color_prepare, paint_color_free);
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	46 return (paint_t *)color;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	47 }
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	48
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49 void paint_color_set(paint_t *paint,
21 83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	50 co_comp_t r, co_comp_t g,
83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	51 co_comp_t b, co_comp_t a) {
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	52 paint_color_t color = (paint_color_t )paint;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	53
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	54 color->r = r;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	55 color->g = g;
0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	56 color->b = b;
21 83d24300a992 opacity (alpha) channel Thinker K.F. Li <thinker@branda.to> parents: 19 diff changeset	57 color->a = a;
18 0f3baa488a62 Support solid color paint for fill. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	58 }
23 56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	59
52 59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	60 void paint_color_get(paint_t *paint,
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	61 co_comp_t r, co_comp_t g,
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	62 co_comp_t b, co_comp_t a) {
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	63 paint_color_t color = (paint_color_t )paint;
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	64
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	65 *r = color->r;
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	66 *g = color->g;
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	67 *b = color->b;
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	68 *a = color->a;
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	69 }
59a295651480 Add action mb_chgcolor_t to change color of paints. Thinker K.F. Li <thinker@branda.to> parents: 23 diff changeset	70
23 56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	71 /*! \brief Linear gradient.
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	72 */
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	73 typedef struct _paint_linear {
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	74 paint_t paint;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	75 co_aix x1, y1;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	76 co_aix x2, y2;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	77 int n_stops;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	78 grad_stop_t *stops;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	79 int flags;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	80 cairo_pattern_t *ptn;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	81 } paint_linear_t;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	82
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	83 #define LIF_DIRTY 0x1
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	84
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	85 static void paint_linear_prepare(paint_t paint, cairo_t cr) {
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	86 paint_linear_t linear = (paint_linear_t )paint;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	87 cairo_pattern_t *ptn;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	88 grad_stop_t *stop;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	89 int i;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	90
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	91 ptn = linear->ptn;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	92 if(linear->flags & LIF_DIRTY) {
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	93 if(ptn)
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	94 cairo_pattern_destroy(ptn);
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	95 linear->flags &= ~LIF_DIRTY;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	96 ptn = cairo_pattern_create_linear(linear->x1, linear->y1,
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	97 linear->x2, linear->y2);
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	98 for(i = 0; i < linear->n_stops; i++) {
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	99 stop = &linear->stops[i];
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	100 cairo_pattern_add_color_stop_rgba(ptn, stop->offset,
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	101 stop->r, stop->g, stop->b,
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	102 stop->a);
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	103 }
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	104 linear->ptn = ptn;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	105 }
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	106
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	107 cairo_set_source(cr, ptn);
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	108 }
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	109
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	110 static void paint_linear_free(paint_t *paint) {
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	111 paint_linear_t linear = (paint_linear_t )paint;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	112
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	113 if(linear->ptn)
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	114 cairo_pattern_destroy(linear->ptn);
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	115 free(paint);
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	116 }
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	117
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	118 paint_t paint_linear_new(redraw_man_t rdman,
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	119 co_aix x1, co_aix y1, co_aix x2, co_aix y2) {
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	120 paint_linear_t *linear;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	121
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	122 linear = (paint_linear_t *)malloc(sizeof(paint_linear_t));
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	123 if(linear == NULL)
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	124 return NULL;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	125
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	126 paint_init(&linear->paint, paint_linear_prepare, paint_linear_free);
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	127
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	128 linear->x1 = x1;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	129 linear->y1 = y1;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	130 linear->x2 = x2;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	131 linear->y2 = y2;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	132 linear->n_stops = 0;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	133 linear->stops = NULL;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	134 linear->flags = LIF_DIRTY;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	135 linear->ptn = NULL;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	136
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	137 return (paint_t *)linear;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	138 }
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	139
58 1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	140 /*! \brief Setup color stop for a linear radient paint.
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	141 *
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	142 * stops should be managed by users of the function. It should be
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	143 * available before the paint being freed or changed to another
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	144 * array of stops.
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	145 */
23 56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	146 grad_stop_t paint_linear_stops(paint_t paint,
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	147 int n_stops,
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	148 grad_stop_t *stops) {
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	149 paint_linear_t linear = (paint_linear_t )paint;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	150 grad_stop_t *old_stops;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	151
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	152 old_stops = linear->stops;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	153 linear->n_stops = n_stops;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	154 linear->stops = stops;
55 01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	155 linear->flags \|= LIF_DIRTY;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	156
23 56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	157 return old_stops;
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	158 }
56f592f56ff7 Fix bug and add linear gradient paint. Thinker K.F. Li <thinker@branda.to> parents: 21 diff changeset	159
55 01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	160 /*! \brief Radial gradient.
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	161 *
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	162 * NOTE: The only supported gradient unit is userSpaceOnUse.
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	163 */
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	164 typedef struct _paint_radial {
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	165 paint_t paint;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	166 co_aix cx, cy;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	167 co_aix r;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	168 int n_stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	169 grad_stop_t *stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	170 int flags;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	171 cairo_pattern_t *ptn;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	172 } paint_radial_t;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	173
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	174 #define RDF_DIRTY 0x1
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	175
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	176 static void paint_radial_prepare(paint_t paint, cairo_t cr) {
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	177 paint_radial_t radial = (paint_radial_t )paint;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	178 cairo_pattern_t *ptn;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	179 grad_stop_t *stop;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	180 int i;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	181
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	182 if(radial->flags & RDF_DIRTY) {
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	183 ptn = cairo_pattern_create_radial(radial->cx, radial->cy, 0,
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	184 radial->cx, radial->cy,
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	185 radial->r);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	186 ASSERT(ptn != NULL);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	187 stop = radial->stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	188 for(i = 0; i < radial->n_stops; i++, stop++) {
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	189 cairo_pattern_add_color_stop_rgba(ptn, stop->offset,
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	190 stop->r, stop->g,
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	191 stop->b, stop->a);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	192 }
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	193 cairo_pattern_destroy(radial->ptn);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	194 radial->ptn = ptn;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	195 }
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	196 cairo_set_source(cr, radial->ptn);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	197 }
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	198
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	199 static void paint_radial_free(paint_t *paint) {
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	200 paint_radial_t radial = (paint_radial_t )paint;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	201
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	202 if(radial->ptn)
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	203 cairo_pattern_destroy(radial->ptn);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	204 free(paint);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	205 }
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	206
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	207 paint_t paint_radial_new(redraw_man_t rdman,
56 e444a8c01735 Change interface of paint_radial_new() Thinker K.F. Li <thinker@branda.to> parents: 55 diff changeset	208 co_aix cx, co_aix cy, co_aix r) {
55 01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	209 paint_radial_t *radial;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	210
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	211 radial = O_ALLOC(paint_radial_t);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	212 if(radial == NULL)
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	213 return NULL;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	214
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	215 paint_init(&radial->paint, paint_radial_prepare, paint_radial_free);
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	216 radial->cx = cx;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	217 radial->cy = cy;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	218 radial->r = r;
56 e444a8c01735 Change interface of paint_radial_new() Thinker K.F. Li <thinker@branda.to> parents: 55 diff changeset	219 radial->n_stops = 0;
e444a8c01735 Change interface of paint_radial_new() Thinker K.F. Li <thinker@branda.to> parents: 55 diff changeset	220 radial->stops = NULL;
55 01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	221 radial->flags = RDF_DIRTY;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	222 radial->ptn = NULL;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	223
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	224 return (paint_t *)radial;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	225 }
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	226
58 1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	227 /*! \brief Setup color stop for a radial radient paint.
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	228 *
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	229 * stops should be managed by users of the function. It should be
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	230 * available before the paint being freed or changed to another
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	231 * array of stops.
1ca417f741f1 - Thinker K.F. Li <thinker@branda.to> parents: 56 diff changeset	232 */
55 01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	233 grad_stop_t paint_radial_stops(paint_t paint,
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	234 int n_stops,
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	235 grad_stop_t *stops) {
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	236 paint_radial_t radial = (paint_radial_t )paint;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	237 grad_stop_t *old_stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	238
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	239 old_stops = radial->stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	240 radial->n_stops = n_stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	241 radial->stops = stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	242 radial->flags \|= RDF_DIRTY;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	243
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	244 return old_stops;
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	245 }
01ed2bc37eed Radial gradient paint Thinker K.F. Li <thinker@branda.to> parents: 52 diff changeset	246

Mercurial > MadButterfly

annotate src/paint.c @ 147:995ee8fd5f1a