MadButterfly: src/event.c annotate

annotate src/event.c @ 232:527894c2ad39

Add functions for collision test. - mb_obj_pos_is_in() test if two coords and their descendants are overlaid. - mb_objs_is_overlay() test if a point is covered by another mb_obj_t.

author	Thinker K.F. Li <thinker@branda.to>
date	Sun, 21 Dec 2008 23:30:00 +0800
parents	c234ee745ceb
children	65cabbdd5284

rev	line source
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	1 /*! \file
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	2 * \brief Convenience functions for event relative work.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	3 */
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	4 #include <stdio.h>
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	5 #include <stdlib.h>
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	6 #include <cairo.h>
186 530bb7728546 Move header files to $(top_srcdir)/include/ and prefixed with 'mb_'. Thinker K.F. Li <thinker@branda.to> parents: 185 diff changeset	7 #include "mb_types.h"
530bb7728546 Move header files to $(top_srcdir)/include/ and prefixed with 'mb_'. Thinker K.F. Li <thinker@branda.to> parents: 185 diff changeset	8 #include "mb_redraw_man.h"
530bb7728546 Move header files to $(top_srcdir)/include/ and prefixed with 'mb_'. Thinker K.F. Li <thinker@branda.to> parents: 185 diff changeset	9 #include "mb_shapes.h"
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	10
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	11 #define OK 0
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	12 #define ERR -1
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	13 #define FALSE 0
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	14 #define TRUE 1
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	15
139 1695a4b02b14 Members of coords are geos instead of shapes, now. Thinker K.F. Li <thinker@branda.to> parents: 75 diff changeset	16 #define ARRAY_EXT_SZ 64
1695a4b02b14 Members of coords are geos instead of shapes, now. Thinker K.F. Li <thinker@branda.to> parents: 75 diff changeset	17
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	18
158 c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape(). Thinker K.F. Li <thinker@branda.to> parents: 139 diff changeset	19 DARRAY_DEFINE(geos, geo_t *);
c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape(). Thinker K.F. Li <thinker@branda.to> parents: 139 diff changeset	20
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	21 /*! \brief Add a geo_t object to general geo list.
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	22 *
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	23 * General geo list can use to temporary keep a list of geo_t
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	24 * objects for any purpose. It supposed to be reused by
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	25 * different modules that need to select part of geo_t objects
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	26 * from a redraw manager.
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	27 */
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	28 static int _add_gen_geo(redraw_man_t rdman, geo_t geo) {
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	29 int r;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	30
158 c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape(). Thinker K.F. Li <thinker@branda.to> parents: 139 diff changeset	31 r = geos_add(&rdman->gen_geos, geo);
c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape(). Thinker K.F. Li <thinker@branda.to> parents: 139 diff changeset	32 return r == 0? OK: ERR;
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	33 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	34
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	35 static int _collect_geos_at_point(redraw_man_t *rdman,
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	36 co_aix x, co_aix y) {
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	37 geo_t *geo;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38 int r;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	39
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	40 r = rdman_force_clean(rdman);
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	41 if(r != OK)
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	42 return ERR;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	43
158 c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape(). Thinker K.F. Li <thinker@branda.to> parents: 139 diff changeset	44 rdman->gen_geos.num = 0;
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	45
139 1695a4b02b14 Members of coords are geos instead of shapes, now. Thinker K.F. Li <thinker@branda.to> parents: 75 diff changeset	46 for(geo = rdman_geos(rdman, NULL);
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	47 geo != NULL;
139 1695a4b02b14 Members of coords are geos instead of shapes, now. Thinker K.F. Li <thinker@branda.to> parents: 75 diff changeset	48 geo = rdman_geos(rdman, geo)) {
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49 if(geo_pos_is_in(geo, x, y)) {
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	50 r = _add_gen_geo(rdman, geo);
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	51 if(r != OK)
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	52 return ERR;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	53 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	54 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	55
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	56 return OK;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	57 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	58
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	59 static void draw_shape_path(shape_t shape, cairo_t cr) {
196 c234ee745ceb Start moving to mb_obj_t Thinker K.F. Li <thinker@branda.to> parents: 186 diff changeset	60 switch(MBO_TYPE(shape)) {
c234ee745ceb Start moving to mb_obj_t Thinker K.F. Li <thinker@branda.to> parents: 186 diff changeset	61 case MBO_PATH:
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	62 sh_path_draw(shape, cr);
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	63 break;
196 c234ee745ceb Start moving to mb_obj_t Thinker K.F. Li <thinker@branda.to> parents: 186 diff changeset	64 case MBO_TEXT:
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	65 sh_text_draw(shape, cr);
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	66 break;
196 c234ee745ceb Start moving to mb_obj_t Thinker K.F. Li <thinker@branda.to> parents: 186 diff changeset	67 case MBO_RECT:
35 581a03196093 Support rectangle tag of SVG. Thinker K.F. Li <thinker@branda.to> parents: 32 diff changeset	68 sh_rect_draw(shape, cr);
581a03196093 Support rectangle tag of SVG. Thinker K.F. Li <thinker@branda.to> parents: 32 diff changeset	69 break;
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	70 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	71 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	72
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	73 static int _shape_pos_is_in_cairo(shape_t *shape, co_aix x, co_aix y,
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	74 int in_stroke, cairo_t cr) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	75 draw_shape_path(shape, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	76 if(shape->fill) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	77 if(cairo_in_fill(cr, x, y)) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	78 *in_stroke = 0;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	79 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	80 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	81 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	82 if(shape->stroke) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	83 if(cairo_in_stroke(cr, x, y)) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	84 *in_stroke = 1;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	85 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	86 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	87 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	88 return FALSE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	89 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	90
70 92cfabe22d6b find_shape_at_pos() finds a shape from clean ones. Thinker K.F. Li <thinker@branda.to> parents: 35 diff changeset	91 static geo_t find_geo_in_pos(redraw_man_t rdman,
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	92 co_aix x, co_aix y, int *in_stroke) {
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	93 geo_t *geo;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	94 geo_t **geos;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	95 shape_t *shape;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	96 cairo_t *cr;
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	97 int i, r;
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	98
158 c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape(). Thinker K.F. Li <thinker@branda.to> parents: 139 diff changeset	99 geos = rdman->gen_geos.ds;
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	100 cr = rdman->cr;
158 c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape(). Thinker K.F. Li <thinker@branda.to> parents: 139 diff changeset	101 for(i = rdman->gen_geos.num - 1; i >= 0; i--) {
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	102 geo = geos[i];
75 23bc382d9683 find_geo_in_pos() should return shapes that is not hidden Thinker K.F. Li <thinker@branda.to> parents: 70 diff changeset	103 if(geo->flags & GEF_HIDDEN)
70 92cfabe22d6b find_shape_at_pos() finds a shape from clean ones. Thinker K.F. Li <thinker@branda.to> parents: 35 diff changeset	104 continue;
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	105 shape = geo_get_shape(geo);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	106 r = _shape_pos_is_in_cairo(shape, x, y, in_stroke, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	107 cairo_new_path(cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	108 if(r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	109 return geo;
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	110 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	111
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	112 return NULL;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	113 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	114
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	115 shape_t find_shape_at_pos(redraw_man_t rdman,
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	116 co_aix x, co_aix y, int *in_stroke) {
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	117 geo_t *geo;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	118 int r;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	119
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	120 r = _collect_geos_at_point(rdman, x, y);
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	121 if(r != OK)
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122 return NULL;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123
70 92cfabe22d6b find_shape_at_pos() finds a shape from clean ones. Thinker K.F. Li <thinker@branda.to> parents: 35 diff changeset	124 geo = find_geo_in_pos(rdman, x, y, in_stroke);
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	125 if(geo == NULL)
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	126 return NULL;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	127
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	128 return geo_get_shape(geo);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	129 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	130
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	131 static
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	132 int _shape_pos_is_in(redraw_man_t rdman, shape_t shape,
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	133 co_aix x, co_aix y, int *in_stroke) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	134 geo_t *geo;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	135 int r;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	136
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	137 geo = sh_get_geo(shape);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	138 r = geo_pos_is_in(geo, x, y);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	139 if(!r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	140 return FALSE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	141
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	142 r = _shape_pos_is_in_cairo(shape, x, y, in_stroke, rdman->cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	143 if(!r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	144 return FALSE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	145
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	146 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	147 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	148
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	149 /*! \brief Test if an object and descendants cover the position
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	150 * specified by x,y.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	151 *
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	152 * \param in_stroke is x, y is on a stroke.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	153 */
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	154 int mb_obj_pos_is_in(redraw_man_t rdman, mb_obj_t obj,
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	155 co_aix x, co_aix y, int *in_stroke) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	156 coord_t cur_coord, root;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	157 shape_t *shape;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	158 geo_t *geo;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	159 int r;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	160
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	161 if(IS_MBO_SHAPES(obj)) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	162 shape = (shape_t *)obj;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	163 r = _shape_pos_is_in_cairo(shape, x, y, in_stroke, rdman->cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	164 return r;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	165 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	166 root = (coord_t *)obj;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	167 for(cur_coord = postorder_coord_subtree(root, NULL);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	168 cur_coord != NULL;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	169 cur_coord = postorder_coord_subtree(root, cur_coord)) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	170 FOR_COORD_MEMBERS(cur_coord, geo) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	171 shape = geo_get_shape(geo);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	172 r = _shape_pos_is_in_cairo(shape, x, y, in_stroke, rdman->cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	173 if(r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	174 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	175 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	176 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	177 return FALSE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	178 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	179
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	180 static
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	181 cairo_t * _prepare_cairo_for_testing(redraw_man_t *rdman) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	182 cairo_surface_t surface, rdman_surface;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	183 cairo_t *cr;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	184 int w, h;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	185
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	186 rdman_surface = cairo_get_target(rdman->cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	187 w = cairo_image_surface_get_width(rdman_surface);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	188 h = cairo_image_surface_get_height(rdman_surface);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	189
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	190 surface = cairo_image_surface_create(CAIRO_FORMAT_A1, w, h);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	191 if(surface == NULL)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	192 return NULL;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	193
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	194 cr = cairo_create(surface);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	195 if(cr == NULL)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	196 cairo_surface_destroy(surface);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	197
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	198 return cr;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	199 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	200
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	201 static
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	202 void _release_cairo_for_testing(cairo_t *cr) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	203 cairo_destroy(cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	204 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	205
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	206 static _draw_to_mask(shape_t shape, cairo_t cr) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	207 geo_t *geo;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	208
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	209 geo = sh_get_geo(shape);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	210 if(geo->flags & GEF_OV_DRAW)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	211 return;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	212
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	213 draw_shape_path(shape, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	214 cairo_clip(cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	215
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	216 geo->flags \|= GEF_OV_DRAW;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	217 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	218
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	219 static
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	220 int _fill_and_check(shape_t shape, cairo_t cr) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	221 int h, stride;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	222 cairo_surface_t *surface;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	223 unsigned char *data;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	224 int i, sz;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	225
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	226 draw_shape_path(shape, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	227 cairo_fill(cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	228
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	229 surface = cairo_get_target(cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	230 data = cairo_image_surface_get_data(surface);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	231
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	232 h = cairo_image_surface_get_height(surface);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	233 stride = cairo_image_surface_get_stride(surface);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	234
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	235 sz = stride * h;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	236 for(i = 0; i < sz; i++) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	237 if(data[i])
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	238 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	239 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	240
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	241 return FALSE;
30 e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	242 }
232 527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	243
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	244 /*! \brief Is a mb_obj_t overlaid with another mb_object_t and
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	245 * descendants.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	246 *
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	247 * coord is relative less than shapes. Check areas of coord can
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	248 * havily avoid useless computation. For shapes, it not only check
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	249 * overlay of area. It also check overlay by actually drawing on a
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	250 * cairo surface.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	251 */
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	252 static
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	253 int _is_obj_objs_overlay(mb_obj_t obj, mb_obj_t others_root,
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	254 cairo_t *cr) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	255 area_t area, candi_area;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	256 coord_t coord, candi_coord, *root;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	257 shape_t shape, candi_shape;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	258 geo_t geo, candi_geo;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	259 int obj_is_shape;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	260 int r;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	261 /*
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	262 */
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	263
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	264 obj_is_shape = IS_MBO_SHAPES(obj);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	265
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	266 if(obj_is_shape) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	267 shape = (shape_t *)obj;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	268 geo = sh_get_geo(shape);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	269 area = geo_get_area(geo);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	270 } else {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	271 coord = (coord_t *)obj;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	272 area = coord_get_area(coord);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	273 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	274
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	275 if(IS_MBO_SHAPES(others_root)) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	276 candi_shape = (shape_t *)others_root;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	277 candi_geo = sh_get_geo(candi_shape);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	278 candi_area = geo_get_area(candi_geo);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	279
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	280 r = is_overlay(area, candi_area);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	281 if(!r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	282 return FALSE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	283
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	284 if(!obj_is_shape)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	285 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	286
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	287 _draw_to_mask(candi_shape, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	288 r = _fill_and_check(shape, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	289
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	290 return r;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	291 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	292
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	293 root = (coord_t *)others_root;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	294 FOR_COORDS_PREORDER(root, candi_coord) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	295 candi_area = coord_get_area(candi_coord);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	296 r = is_overlay(area, candi_area);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	297 if(!r) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	298 preorder_coord_skip_subtree(coord);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	299 continue;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	300 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	301
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	302 FOR_COORD_MEMBERS(coord, candi_geo) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	303 candi_area = geo_get_area(candi_geo);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	304 r = is_overlay(area, candi_area);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	305 if(!r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	306 continue;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	307
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	308 if(!obj_is_shape)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	309 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	310
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	311 _draw_to_mask(candi_shape, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	312 r = _fill_and_check(shape, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	313 if(r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	314 return TRUE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	315 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	316 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	317
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	318 return FALSE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	319 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	320
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	321 /*! \brief Test if two objects are overlaid.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	322 *
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	323 * \todo Detect overlay in better way with cairo.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	324 * \note This function cost heavy on CPU power.
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	325 */
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	326 int mb_objs_is_overlay(redraw_man_t *rdman,
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	327 mb_obj_t obj1, mb_obj_t obj2) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	328 cairo_t *cr;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	329 area_t *area;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	330 shape_t *shape;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	331 geo_t *geo;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	332 coord_t coord, root;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	333 int r;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	334
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	335 cr = _prepare_cairo_for_testing(rdman);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	336
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	337 if(IS_MBO_SHAPES(obj1)) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	338 shape = (shape_t *)obj1;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	339 r = _is_obj_objs_overlay(obj1, obj2, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	340 goto out;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	341 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	342
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	343 root = (coord_t *)obj1;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	344 FOR_COORDS_PREORDER(root, coord) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	345 area = coord_get_area(coord);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	346 r = _is_obj_objs_overlay((mb_obj_t *)coord, obj2, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	347 if(!r) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	348 preorder_coord_skip_subtree(coord);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	349 continue;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	350 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	351
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	352 FOR_COORD_MEMBERS(coord, geo) {
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	353 shape = geo_get_shape(geo);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	354 r = _is_obj_objs_overlay((mb_obj_t *)shape, obj2, cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	355 if(r)
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	356 goto out;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	357 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	358 }
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	359 r = FALSE;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	360
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	361 out:
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	362 _release_cairo_for_testing(cr);
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	363 return r;
527894c2ad39 Add functions for collision test. Thinker K.F. Li <thinker@branda.to> parents: 196 diff changeset	364 }

Mercurial > MadButterfly

annotate src/event.c @ 232:527894c2ad39