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annotate src/event.c @ 158:c1cdd3fcd28f

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Postponing rdman_coord_free() and rdman_remove_shape(). rdman will access free memory if coords or shapes are free when it is dirty. The requests are postponed until rdman is clean.
author Thinker K.F. Li <thinker@branda.to>
date Fri, 03 Oct 2008 10:22:08 +0800
parents 1695a4b02b14
children b90abd31a281
rev   line source
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
1 #include <stdio.h>
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
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2 #include <stdlib.h>
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
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3 #include <cairo.h>
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
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4 #include "mb_types.h"
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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5 #include "redraw_man.h"
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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6 #include "shapes.h"
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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7
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
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8 #define OK 0
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9 #define ERR -1
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10
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1695a4b02b14 Members of coords are geos instead of shapes, now.
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11 #define ARRAY_EXT_SZ 64
1695a4b02b14 Members of coords are geos instead of shapes, now.
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12
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13
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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14 static int extend_memblk(void **buf, int o_size, int n_size) {
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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15 void *new_buf;
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16
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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17 new_buf = realloc(*buf, n_size);
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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18 if(new_buf == NULL)
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19 return ERR;
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20
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21 *buf = new_buf;
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22
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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23 return OK;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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24 }
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25
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c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape().
Thinker K.F. Li <thinker@branda.to>
parents: 139
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26 DARRAY_DEFINE(geos, geo_t *);
c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape().
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27
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e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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28 /*! \brief Add a geo_t object to general geo list.
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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29 *
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30 * 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.
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31 * objects for any purpose. It supposed to be reused by
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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32 * 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.
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33 * from a redraw manager.
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34 */
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35 static int add_gen_geo(redraw_man_t *rdman, geo_t *geo) {
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36 int r;
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37
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c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape().
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38 r = geos_add(&rdman->gen_geos, geo);
c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape().
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39 return r == 0? OK: ERR;
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40 }
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41
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42 static int collect_shapes_at_point(redraw_man_t *rdman,
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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43 co_aix x, co_aix y) {
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44 geo_t *geo;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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45 int r;
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46
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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47 r = rdman_force_clean(rdman);
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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48 if(r != OK)
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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49 return ERR;
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50
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c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape().
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51 rdman->gen_geos.num = 0;
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52
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1695a4b02b14 Members of coords are geos instead of shapes, now.
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53 for(geo = rdman_geos(rdman, NULL);
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54 geo != NULL;
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55 geo = rdman_geos(rdman, geo)) {
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e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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56 if(geo_pos_is_in(geo, x, y)) {
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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57 r = add_gen_geo(rdman, geo);
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58 if(r != OK)
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59 return ERR;
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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60 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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61 }
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62
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63 return OK;
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64 }
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65
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66 static void draw_shape_path(shape_t *shape, cairo_t *cr) {
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67 switch(shape->sh_type) {
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68 case SHT_PATH:
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69 sh_path_draw(shape, cr);
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70 break;
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71 case SHT_TEXT:
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72 sh_text_draw(shape, cr);
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73 break;
35
581a03196093 Support rectangle tag of SVG.
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74 case SHT_RECT:
581a03196093 Support rectangle tag of SVG.
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75 sh_rect_draw(shape, cr);
581a03196093 Support rectangle tag of SVG.
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76 break;
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77 }
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78 }
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79
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92cfabe22d6b find_shape_at_pos() finds a shape from clean ones.
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80 static geo_t *find_geo_in_pos(redraw_man_t *rdman,
30
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81 co_aix x, co_aix y, int *in_stroke) {
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82 geo_t *geo;
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83 geo_t **geos;
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84 shape_t *shape;
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85 cairo_t *cr;
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86 int i;
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87
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c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape().
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88 geos = rdman->gen_geos.ds;
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89 cr = rdman->cr;
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c1cdd3fcd28f Postponing rdman_coord_free() and rdman_remove_shape().
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90 for(i = rdman->gen_geos.num - 1; i >= 0; i--) {
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91 geo = geos[i];
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23bc382d9683 find_geo_in_pos() should return shapes that is not hidden
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parents: 70
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92 if(geo->flags & GEF_HIDDEN)
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92cfabe22d6b find_shape_at_pos() finds a shape from clean ones.
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93 continue;
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94 shape = geo->shape;
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95 draw_shape_path(shape, cr);
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96 if(shape->fill) {
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97 if(cairo_in_fill(cr, x, y)) {
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98 *in_stroke = 0;
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69c8e264890d Remove old path after every shape checking for a position.
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99 cairo_new_path(rdman->cr);
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100 return geo;
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101 }
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102 }
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103 if(shape->stroke) {
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104 if(cairo_in_stroke(cr, x, y)) {
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105 *in_stroke = 1;
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106 cairo_new_path(rdman->cr);
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107 return geo;
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108 }
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109 }
32
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110 cairo_new_path(rdman->cr);
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111 }
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112
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113 return NULL;
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114 }
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115
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116 shape_t *find_shape_at_pos(redraw_man_t *rdman,
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117 co_aix x, co_aix y, int *in_stroke) {
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118 geo_t *geo;
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119 int r;
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120
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121 r = collect_shapes_at_point(rdman, x, y);
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122 if(r != OK)
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123 return NULL;
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124
70
92cfabe22d6b find_shape_at_pos() finds a shape from clean ones.
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parents: 35
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125 geo = find_geo_in_pos(rdman, x, y, in_stroke);
30
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126 if(geo == NULL)
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127 return NULL;
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diff changeset
128
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
129 return geo->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
130 }