annotate src/event.c @ 241:104d83378582

Add scene support in svg2code.py. - Add mb_sprite_t::goto_scene() - svg2code.py recoganize "scenes" tag in metadata of SVG file. - tranform scenes into SCENE() macro. - define SCENE macro in mb_c_*.m4
author Thinker K.F. Li <thinker@branda.to>
date Wed, 31 Dec 2008 02:08:40 +0800
parents 65cabbdd5284
children bd8ea44b421e
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1 /*! \file
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2 * \brief Convenience functions for event relative work.
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3 */
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #ifndef UNITTEST
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7 #include <cairo.h>
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8 #include "mb_types.h"
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9 #include "mb_redraw_man.h"
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10 #include "mb_shapes.h"
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11 #endif
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12
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13 #define OK 0
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14 #define ERR -1
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15 #define FALSE 0
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16 #define TRUE 1
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17
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18 #define ARRAY_EXT_SZ 64
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19
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20 #define ASSERT(x)
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21
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22 #ifdef UNITTEST
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23 /* ============================================================ */
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24
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25 typedef struct shape shape_t;
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26
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27 typedef struct cairo cairo_t;
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28 struct cairo {
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29 shape_t *drawed;
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30 };
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31 #define cairo_in_fill(cr, x, y) 0
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32 #define cairo_in_stroke(cr, x, y) 0
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33 #define cairo_new_path(cr)
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34 #define cairo_get_target(cr) NULL
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35 #define cairo_create(target) NULL
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36 #define cairo_destroy(cr)
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37 #define cairo_clip(cr)
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38 #define cairo_fill(cr)
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39 #define cairo_image_surface_get_data(cr) NULL
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40 #define cairo_image_surface_get_stride(cr) 1
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41
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42 struct cairo_surface {
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43 };
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44 typedef struct cairo_surface cairo_surface_t;
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45 #define cairo_image_surface_get_width(surface) 0
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46 #define cairo_image_surface_get_height(surface) 0
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47 #define cairo_image_surface_create(surface, w, h) NULL
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48 #define cairo_surface_destroy(surface)
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49
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50
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51 typedef float co_aix;
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52
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53 typedef struct _area area_t;
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54 struct _area {
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55 co_aix x, y;
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56 co_aix w, h;
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57 };
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58 #define range_overlay(as, aw, bs, bw) \
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59 (((bs) - (as)) <= (aw) || ((as) - (bs)) <= (bw))
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60 #define areas_are_overlay(a1, a2) \
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61 (range_overlay((a1)->x, (a1)->w, \
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62 (a2)->x, (a2)->w) && \
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63 range_overlay((a1)->y, (a1)->h, \
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64 (a2)->y, (a2)->h))
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65
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66 struct mb_obj {
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67 int obj_type;
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68 };
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69 typedef struct mb_obj mb_obj_t;
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70
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71 #define GEF_OV_DRAW 0x1
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72 #define GEF_HIDDEN 0x2
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73
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74 struct shape {
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75 mb_obj_t obj;
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76
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77 area_t area;
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79 void *fill, *stroke;
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80 struct shape *sibling;
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81 int flags;
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82
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83 int num_points;
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84 co_aix points[32][2];
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85 };
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86 enum { MBO_DUMMY,
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87 MBO_COORD,
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88 MBO_SHAPES=0x1000,
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89 MBO_PATH,
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90 MBO_TEXT,
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91 MBO_RECT
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92 };
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93 #define MBO_TYPE(x) (((mb_obj_t *)(x))->obj_type)
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94 #define IS_MBO_SHAPES(x) (((mb_obj_t *)(x))->obj_type & MBO_SHAPES)
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95 #define sh_get_geo(x) ((x)->geo)
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96 static int sh_pos_is_in(shape_t *shape, co_aix x, co_aix y) {
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97 int i;
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98
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99 for(i = 0; i < shape->num_points; i++)
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100 if(shape->points[i][0] == x && shape->points[i][1] == y)
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101 return TRUE;
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102 return FALSE;
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103 }
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104 #define sh_get_flags(shape, mask) ((shape)->flags & mask)
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105 #define sh_set_flags(shape, mask) do { (shape)->flags |= mask; } while(0)
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106 #define sh_clear_flags(shape, mask) do { (shape)->flags &= ~(mask); } while(0)
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107 #define sh_get_area(shape) (&(shape)->area)
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108
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109 typedef struct coord coord_t;
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110 struct coord {
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111 mb_obj_t obj;
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112
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113 area_t area;
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114 int flags;
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115 coord_t *parent;
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116 coord_t *children;
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117 coord_t *sibling;
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118 shape_t *shapes;
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119 };
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120
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121 #define COF_SKIP 0x1
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122
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123 #define coord_get_area(coord) (&(coord)->area)
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124 #define FOR_COORD_SHAPES(coord, shape) \
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125 for(shape = (coord)->shapes; \
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126 shape != NULL; \
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127 shape = (shape)->sibling)
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128 #define FOR_COORDS_PREORDER(root, last) \
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129 for(last = root; \
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130 last != NULL; \
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131 last = preorder_coord_subtree(root, last))
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132
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133 static
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134 coord_t *preorder_coord_subtree(coord_t *root, coord_t *last) {
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135 if(last->children)
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136 return last->children;
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137 while(last->sibling == NULL)
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138 last = last->parent;
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139 return last->sibling;
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140 }
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141
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142 static
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143 coord_t *postorder_coord_subtree(coord_t *root, coord_t *last) {
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144 coord_t *cur;
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145
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146 if(last != NULL) {
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147 if(last->sibling == NULL) {
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148 cur = last->parent;
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149 return cur;
104d83378582 Add scene support in svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
150 }
104d83378582 Add scene support in svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
151 cur = last->sibling;
104d83378582 Add scene support in svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
152 }
104d83378582 Add scene support in svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
153
104d83378582 Add scene support in svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
154 cur = last;
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Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
155 while(cur->children) {
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Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
156 cur = cur->children;
104d83378582 Add scene support in svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
157 }
104d83378582 Add scene support in svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 235
diff changeset
158 return cur;
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
159 }
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parents:
diff changeset
160
235
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parents: 232
diff changeset
161 #define sh_path_draw(path, cr)
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parents: 232
diff changeset
162 #define sh_text_draw(path, cr)
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parents: 232
diff changeset
163 #define sh_rect_draw(path, cr)
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parents: 232
diff changeset
164
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parents: 232
diff changeset
165
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
166 struct redraw_man {
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parents: 232
diff changeset
167 cairo_t *cr;
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parents: 232
diff changeset
168 int shape_gl_sz;
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parents: 232
diff changeset
169 shape_t *shape_gl[32];
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parents: 232
diff changeset
170 };
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parents: 232
diff changeset
171 typedef struct redraw_man redraw_man_t;
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parents: 232
diff changeset
172 #define rdman_get_cr(rdman) ((rdman)->cr)
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parents: 232
diff changeset
173 #define rdman_get_gen_geos(rdman) (&(rdman)->gen_geos)
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parents: 232
diff changeset
174 #define rdman_force_clean(rdman) OK
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parents: 232
diff changeset
175 #define rdman_geos(rdman, geo) NULL
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parents: 232
diff changeset
176 #define rdman_clear_shape_gl(rdman) \
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parents: 232
diff changeset
177 do {(rdman)->shape_gl_sz = 0; } while(0)
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parents: 232
diff changeset
178 static int rdman_add_shape_gl(redraw_man_t *rdman, shape_t *shape) {
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parents: 232
diff changeset
179 (rdman)->shape_gl[(rdman)->shape_gl_sz++] = shape;
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parents: 232
diff changeset
180 return OK;
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
181 }
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parents: 232
diff changeset
182 #define rdman_get_shape_gl(rdman, idx) \
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parents: 232
diff changeset
183 (rdman)->shape_gl[idx]
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parents: 232
diff changeset
184 #define rdman_shape_gl_len(rdman) (rdman)->shape_gl_sz
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parents: 232
diff changeset
185 static shape_t *rdman_shapes(redraw_man_t *rdman, shape_t *last_shape);
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parents: 232
diff changeset
186
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parents: 232
diff changeset
187
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parents: 232
diff changeset
188 /* ============================================================ */
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parents: 232
diff changeset
189 #endif /* UNITTEST */
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parents: 232
diff changeset
190
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parents: 232
diff changeset
191
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parents: 232
diff changeset
192 static int _collect_shapes_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
193 co_aix x, co_aix y) {
235
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parents: 232
diff changeset
194 shape_t *shape;
30
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
195 int r;
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Thinker K.F. Li <thinker@branda.to>
parents:
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196
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
197 r = rdman_force_clean(rdman);
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
198 if(r != OK)
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
199 return ERR;
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
200
235
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parents: 232
diff changeset
201 rdman_clear_shape_gl(rdman);
30
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
202
235
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parents: 232
diff changeset
203 for(shape = rdman_shapes(rdman, (shape_t *)NULL);
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parents: 232
diff changeset
204 shape != NULL;
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
205 shape = rdman_shapes(rdman, shape)) {
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parents: 232
diff changeset
206 if(sh_pos_is_in(shape, x, y)) {
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parents: 232
diff changeset
207 r = rdman_add_shape_gl(rdman, shape);
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
208 if(r != 0)
30
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
209 return ERR;
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
210 }
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
211 }
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
212
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
213 return OK;
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
214 }
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
215
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
216 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
217 switch(MBO_TYPE(shape)) {
c234ee745ceb Start moving to mb_obj_t
Thinker K.F. Li <thinker@branda.to>
parents: 186
diff changeset
218 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
219 sh_path_draw(shape, cr);
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
220 break;
196
c234ee745ceb Start moving to mb_obj_t
Thinker K.F. Li <thinker@branda.to>
parents: 186
diff changeset
221 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
222 sh_text_draw(shape, cr);
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
223 break;
196
c234ee745ceb Start moving to mb_obj_t
Thinker K.F. Li <thinker@branda.to>
parents: 186
diff changeset
224 case MBO_RECT:
35
581a03196093 Support rectangle tag of SVG.
Thinker K.F. Li <thinker@branda.to>
parents: 32
diff changeset
225 sh_rect_draw(shape, cr);
581a03196093 Support rectangle tag of SVG.
Thinker K.F. Li <thinker@branda.to>
parents: 32
diff changeset
226 break;
30
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
227 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
228 }
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Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
229
232
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
230 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
231 int *in_stroke, cairo_t *cr) {
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
232 draw_shape_path(shape, cr);
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
233 if(shape->fill) {
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
234 if(cairo_in_fill(cr, x, y)) {
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
235 *in_stroke = 0;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
236 return TRUE;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
237 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
238 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
239 if(shape->stroke) {
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
240 if(cairo_in_stroke(cr, x, y)) {
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
241 *in_stroke = 1;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
242 return TRUE;
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 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
245 return FALSE;
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
235
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
248 static
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
249 int _shape_pos_is_in(shape_t *shape, co_aix x, co_aix y,
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
250 int *in_stroke, cairo_t *cr) {
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
251 int r;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
252
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
253 r = sh_pos_is_in(shape, x, y);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
254 if(!r)
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
255 return FALSE;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
256
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
257 r = _shape_pos_is_in_cairo(shape, x, y, in_stroke, cr);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
258 cairo_new_path(cr);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
259 if(!r)
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
260 return FALSE;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
261
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
262 return TRUE;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
263 }
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
264
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
265 static shape_t *_find_shape_in_pos(redraw_man_t *rdman,
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
266 co_aix x, co_aix y, int *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
267 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
268 cairo_t *cr;
232
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
269 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
270
235
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
271 cr = rdman_get_cr(rdman);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
272 for(i = rdman_shape_gl_len(rdman) - 1; i >= 0; i--) {
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
273 shape = rdman_get_shape_gl(rdman, i);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
274 if(sh_get_flags(shape, 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
275 continue;
232
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
276 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
277 if(r)
235
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
278 return shape;
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
279 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
280
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
281 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
282 }
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
283
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
284 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
285 co_aix x, co_aix y, int *in_stroke) {
235
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
286 shape_t *shape;
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
287 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
288
235
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
289 r = _collect_shapes_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
290 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
291 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
292
235
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
293 shape = _find_shape_in_pos(rdman, x, y, in_stroke);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
294 return shape;
232
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
295 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
296
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
297 /*! \brief Test if an object and descendants cover the position
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298 * specified by x,y.
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299 *
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300 * \param in_stroke is x, y is on a stroke.
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301 */
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302 int mb_obj_pos_is_in(redraw_man_t *rdman, mb_obj_t *obj,
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303 co_aix x, co_aix y, int *in_stroke) {
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304 coord_t *cur_coord, *root;
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305 shape_t *shape;
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306 int r;
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307
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308 if(IS_MBO_SHAPES(obj)) {
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309 shape = (shape_t *)obj;
235
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310 r = _shape_pos_is_in(shape, x, y, in_stroke, rdman_get_cr(rdman));
232
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311 return r;
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312 }
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313 root = (coord_t *)obj;
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314 for(cur_coord = postorder_coord_subtree(root, NULL);
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315 cur_coord != NULL;
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316 cur_coord = postorder_coord_subtree(root, cur_coord)) {
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317 FOR_COORD_SHAPES(cur_coord, shape) {
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318 r = _shape_pos_is_in(shape, x, y, in_stroke, rdman_get_cr(rdman));
232
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319 if(r)
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320 return TRUE;
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321 }
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322 }
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323 return FALSE;
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324 }
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325
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326 static
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327 cairo_t * _prepare_cairo_for_testing(redraw_man_t *rdman) {
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328 cairo_surface_t *surface, *rdman_surface;
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329 cairo_t *cr;
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330 int w, h;
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331
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332 rdman_surface = cairo_get_target(rdman_get_cr(rdman));
232
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333 w = cairo_image_surface_get_width(rdman_surface);
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334 h = cairo_image_surface_get_height(rdman_surface);
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335
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336 surface = cairo_image_surface_create(CAIRO_FORMAT_A1, w, h);
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337 if(surface == NULL)
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338 return NULL;
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339
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340 cr = cairo_create(surface);
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341 if(cr == NULL)
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342 cairo_surface_destroy(surface);
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343
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344 return cr;
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345 }
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346
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347 static
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348 void _release_cairo_for_testing(cairo_t *cr) {
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349 cairo_destroy(cr);
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350 }
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351
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352 static
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353 void _draw_to_mask(shape_t *shape, cairo_t *cr) {
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354 if(sh_get_flags(shape, GEF_OV_DRAW))
232
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355 return;
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356
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357 draw_shape_path(shape, cr);
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358 cairo_clip(cr);
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359
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360 sh_set_flags(shape, GEF_OV_DRAW);
232
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361 }
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362
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363 static
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364 int _fill_and_check(shape_t *shape, cairo_t *cr) {
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365 int h, stride;
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366 cairo_surface_t *surface;
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367 unsigned char *data;
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368 int i, sz;
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369
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370 draw_shape_path(shape, cr);
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371 cairo_fill(cr);
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372
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373 surface = cairo_get_target(cr);
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374 data = cairo_image_surface_get_data(surface);
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375
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376 h = cairo_image_surface_get_height(surface);
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377 stride = cairo_image_surface_get_stride(surface);
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378
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379 sz = stride * h;
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380 for(i = 0; i < sz; i++) {
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381 if(data[i])
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382 return TRUE;
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383 }
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384
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385 return FALSE;
30
e06a4a667ce2 Accept mouse/pointer event and hint the shape that the pointer is over.
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parents:
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386 }
232
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387
235
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388 /*! \brief Is a mb_obj_t overlaid with another mb_obj_t and
232
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389 * descendants.
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390 *
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391 * coord is relative less than shapes. Check areas of coord can
235
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392 * skip sub-trees and avoid useless heavy computation. For shapes,
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393 * it not only check overlay of area. It also check overlay by
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394 * actually drawing on a cairo surface.
232
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395 */
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396 static
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397 int _is_obj_objs_overlay(mb_obj_t *obj, mb_obj_t *others_root,
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398 cairo_t *cr) {
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399 area_t *area, *candi_area;
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400 coord_t *coord, *candi_coord, *root;
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401 shape_t *shape, *candi_shape;
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402 int obj_is_shape;
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403 int r;
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404
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405 obj_is_shape = IS_MBO_SHAPES(obj);
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406
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407 if(obj_is_shape) {
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408 shape = (shape_t *)obj;
235
65cabbdd5284 termporary revision
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409 area = sh_get_area(shape);
232
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410 } else {
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411 coord = (coord_t *)obj;
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412 area = coord_get_area(coord);
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diff changeset
413 }
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diff changeset
414
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diff changeset
415 if(IS_MBO_SHAPES(others_root)) {
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diff changeset
416 candi_shape = (shape_t *)others_root;
235
65cabbdd5284 termporary revision
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417 candi_area = sh_get_area(candi_shape);
232
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418
235
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diff changeset
419 r = areas_are_overlay(area, candi_area);
232
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diff changeset
420 if(!r)
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421 return FALSE;
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diff changeset
422
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diff changeset
423 if(!obj_is_shape)
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424 return TRUE;
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diff changeset
425
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426 _draw_to_mask(candi_shape, cr);
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427 r = _fill_and_check(shape, cr);
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diff changeset
428
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diff changeset
429 return r;
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diff changeset
430 }
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diff changeset
431
235
65cabbdd5284 termporary revision
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diff changeset
432 ASSERT(IS_MBO_COORD(others_root));
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diff changeset
433
232
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diff changeset
434 root = (coord_t *)others_root;
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diff changeset
435 FOR_COORDS_PREORDER(root, candi_coord) {
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diff changeset
436 candi_area = coord_get_area(candi_coord);
235
65cabbdd5284 termporary revision
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diff changeset
437 r = areas_are_overlay(area, candi_area);
232
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diff changeset
438 if(!r) {
235
65cabbdd5284 termporary revision
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diff changeset
439 preorder_coord_skip_subtree(candi_coord);
232
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diff changeset
440 continue;
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diff changeset
441 }
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diff changeset
442
235
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diff changeset
443 FOR_COORD_SHAPES(candi_coord, candi_shape) {
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diff changeset
444 candi_area = sh_get_area(candi_shape);
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diff changeset
445 r = areas_are_overlay(area, candi_area);
232
527894c2ad39 Add functions for collision test.
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diff changeset
446 if(!r)
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diff changeset
447 continue;
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diff changeset
448
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diff changeset
449 if(!obj_is_shape)
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diff changeset
450 return TRUE;
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parents: 196
diff changeset
451
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parents: 196
diff changeset
452 _draw_to_mask(candi_shape, cr);
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
453 r = _fill_and_check(shape, cr);
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parents: 196
diff changeset
454 if(r)
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
455 return TRUE;
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
456 }
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
457 }
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
458
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
459 return FALSE;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
460 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
461
235
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parents: 232
diff changeset
462 static
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
463 void _clear_ov_draw(mb_obj_t *obj) {
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parents: 232
diff changeset
464 coord_t *coord, *root;
65cabbdd5284 termporary revision
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parents: 232
diff changeset
465 shape_t *shape;
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parents: 232
diff changeset
466
65cabbdd5284 termporary revision
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parents: 232
diff changeset
467 if(IS_MBO_SHAPES(obj)) {
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parents: 232
diff changeset
468 shape = (shape_t *)obj;
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parents: 232
diff changeset
469 sh_clear_flags(shape, GEF_OV_DRAW);
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parents: 232
diff changeset
470 return;
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parents: 232
diff changeset
471 }
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parents: 232
diff changeset
472
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parents: 232
diff changeset
473 root = (coord_t *)obj;
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parents: 232
diff changeset
474 FOR_COORDS_PREORDER(root, coord) {
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parents: 232
diff changeset
475 FOR_COORD_SHAPES(coord, shape) {
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parents: 232
diff changeset
476 sh_clear_flags(shape, GEF_OV_DRAW);
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
477 }
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
478 }
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
479 }
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
480
232
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
481 /*! \brief Test if two objects are overlaid.
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
482 *
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
483 * \todo Detect overlay in better way with cairo.
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
484 * \note This function cost heavy on CPU power.
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parents: 196
diff changeset
485 */
235
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parents: 232
diff changeset
486 int mb_objs_are_overlay(redraw_man_t *rdman,
232
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
487 mb_obj_t *obj1, mb_obj_t *obj2) {
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parents: 196
diff changeset
488 cairo_t *cr;
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
489 area_t *area;
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parents: 196
diff changeset
490 shape_t *shape;
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parents: 196
diff changeset
491 coord_t *coord, *root;
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
492 int r;
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parents: 196
diff changeset
493
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parents: 196
diff changeset
494 cr = _prepare_cairo_for_testing(rdman);
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parents: 196
diff changeset
495
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
496 if(IS_MBO_SHAPES(obj1)) {
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
497 shape = (shape_t *)obj1;
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
498 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
499 goto out;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
500 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
501
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
502 root = (coord_t *)obj1;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
503 FOR_COORDS_PREORDER(root, coord) {
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
504 area = coord_get_area(coord);
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
505 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
506 if(!r) {
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
507 preorder_coord_skip_subtree(coord);
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
508 continue;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
509 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
510
235
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parents: 232
diff changeset
511 FOR_COORD_SHAPES(coord, shape) {
232
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parents: 196
diff changeset
512 r = _is_obj_objs_overlay((mb_obj_t *)shape, obj2, cr);
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Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
513 if(r)
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
514 goto out;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
515 }
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
516 }
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
517 r = FALSE;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
518
527894c2ad39 Add functions for collision test.
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parents: 196
diff changeset
519 out:
235
65cabbdd5284 termporary revision
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parents: 232
diff changeset
520 _clear_ov_draw(obj2); /* marked by _is_obj_objs_overlay() */
232
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
521 _release_cairo_for_testing(cr);
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
522 return r;
527894c2ad39 Add functions for collision test.
Thinker K.F. Li <thinker@branda.to>
parents: 196
diff changeset
523 }
235
65cabbdd5284 termporary revision
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parents: 232
diff changeset
524
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
525 #ifdef UNITTEST
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parents: 232
diff changeset
526
65cabbdd5284 termporary revision
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parents: 232
diff changeset
527 #include <CUnit/Basic.h>
65cabbdd5284 termporary revision
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parents: 232
diff changeset
528
65cabbdd5284 termporary revision
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parents: 232
diff changeset
529 static
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
530 redraw_man_t *_fake_rdman(void) {
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
531 redraw_man_t *rdman;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
532 cairo_surface_t *surface;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
533
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
534 rdman = (redraw_man_t *)malloc(sizeof(redraw_man_t));
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parents: 232
diff changeset
535 surface = cairo_image_surface_create(CAIRO_FORMAT_A1, 100, 100);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
536 rdman->cr = cairo_create(surface);
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
537 DARRAY_INIT(&rdman->gen_geos);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
538 return rdman;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
539 }
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
540
65cabbdd5284 termporary revision
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parents: 232
diff changeset
541 static
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parents: 232
diff changeset
542 void _free_fake_rdman(redraw_man_t *rdman) {
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
543 cairo_destroy(rdman->cr);
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
544 DARRAY_DESTROY(&rdman->gen_geos);
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Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
545 free(rdman);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
546 }
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
547
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
548 static
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
549 void test_mb_obj_pos_is_in(void) {
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
550 redraw_man_t *rdman;
65cabbdd5284 termporary revision
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parents: 232
diff changeset
551 mb_obj_t *obj;
65cabbdd5284 termporary revision
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parents: 232
diff changeset
552
65cabbdd5284 termporary revision
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parents: 232
diff changeset
553 rdman = _fake_rdman();
65cabbdd5284 termporary revision
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parents: 232
diff changeset
554 CU_ASSERT(rdman != NULL);
65cabbdd5284 termporary revision
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parents: 232
diff changeset
555
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
556 _free_fake_rdman(rdman);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
557 }
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
558
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
559 static
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
560 void test_is_obj_objs_overlay(void) {
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
561 }
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
562
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
563 static
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
564 void test_mb_objs_are_overlay(void) {
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
565 }
65cabbdd5284 termporary revision
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parents: 232
diff changeset
566
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
567 CU_pSuite get_event_suite(void) {
65cabbdd5284 termporary revision
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parents: 232
diff changeset
568 CU_pSuite suite;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
569
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
570 suite = CU_add_suite("Suite_event", NULL, NULL);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
571 CU_ADD_TEST(suite, test_mb_obj_pos_is_in);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
572 CU_ADD_TEST(suite, test_is_obj_objs_overlay);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
573 CU_ADD_TEST(suite, test_mb_objs_are_overlay);
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
574
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
575 return suite;
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
576 }
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
577
65cabbdd5284 termporary revision
Thinker K.F. Li <thinker@branda.to>
parents: 232
diff changeset
578 #endif /* UNITTEST */