Mercurial > MadButterfly
annotate src/redraw_man.c @ 38:8d219ebd729e
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author | Thinker K.F. Li <thinker@branda.to> |
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date | Wed, 06 Aug 2008 10:20:34 +0800 |
parents | 943acee7f346 |
children | ab028c9f0930 |
rev | line source |
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12 | 1 #include <stdio.h> |
2 #include <stdlib.h> | |
3 #include <string.h> | |
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4 #include <cairo.h> |
12 | 5 #include "mb_types.h" |
6 #include "shapes.h" | |
7 #include "tools.h" | |
8 #include "redraw_man.h" | |
9 | |
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10 /* NOTE: bounding box should also consider width of stroke. |
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11 */ |
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12 |
12 | 13 #define OK 0 |
14 #define ERR -1 | |
15 | |
13 | 16 #define OFFSET(type, field) ((void *)&((type *)NULL)->field - (void *)NULL) |
17 #define SWAP(a, b, t) do { t c; c = a; a = b; b = c; } while(0) | |
18 | |
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19 #ifdef UNITTEST |
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20 typedef struct _sh_dummy sh_dummy_t; |
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21 |
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22 extern void sh_dummy_transform(shape_t *shape); |
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23 extern void sh_dummy_fill(shape_t *, cairo_t *); |
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24 #endif /* UNITTEST */ |
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25 |
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26 /*! \brief Sort a list of element by a unsigned integer. |
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27 * |
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28 * The result is in ascend order. The unsigned integers is |
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29 * at offset specified by 'off' from start address of elemnts. |
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30 */ |
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31 static void _insert_sort(void **elms, int num, int off) { |
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32 int i, j; |
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33 unsigned int val; |
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34 |
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35 for(i = 1; i < num; i++) { |
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36 val = *(unsigned int *)(elms[i] + off); |
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37 for(j = i; j > 0; j--) { |
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38 if(*(unsigned int *)(elms[j - 1] + off) <= val) |
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39 break; |
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40 elms[j] = elms[j - 1]; |
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41 } |
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42 elms[j] = elms[i]; |
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43 } |
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44 } |
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45 |
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46 static int extend_memblk(void **buf, int o_size, int n_size) { |
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47 void *new_buf; |
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48 |
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49 new_buf = realloc(*buf, n_size); |
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50 if(new_buf == NULL) |
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51 return ERR; |
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52 |
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53 *buf = new_buf; |
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54 |
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55 return OK; |
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56 } |
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57 |
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58 static int add_dirty_geo(redraw_man_t *rdman, geo_t *geo) { |
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59 int max_dirty_geos; |
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60 int r; |
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61 |
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62 if(rdman->n_dirty_geos >= rdman->max_dirty_geos) { |
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63 max_dirty_geos = rdman->n_geos; |
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64 r = extend_memblk((void **)&rdman->dirty_geos, |
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65 sizeof(geo_t *) * rdman->n_dirty_geos, |
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66 sizeof(geo_t *) * max_dirty_geos); |
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67 if(r != OK) |
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68 return ERR; |
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69 rdman->max_dirty_geos = max_dirty_geos; |
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70 } |
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71 |
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72 rdman->dirty_geos[rdman->n_dirty_geos++] = geo; |
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73 return OK; |
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74 } |
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75 |
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76 static int add_dirty_area(redraw_man_t *rdman, area_t *area) { |
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77 int max_dirty_areas; |
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78 int r; |
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79 |
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80 if(rdman->n_dirty_areas >= rdman->max_dirty_areas) { |
37 | 81 /* every geo object and coord object can contribute 2 areas. |
82 * rdman_draw_area() may also contribute 1 area. | |
83 */ | |
84 max_dirty_areas = (rdman->n_geos + rdman->n_coords) * 2 + 1; | |
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85 r = extend_memblk((void **)&rdman->dirty_areas, |
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86 sizeof(area_t *) * rdman->n_dirty_areas, |
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87 sizeof(area_t *) * max_dirty_areas); |
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88 if(r != OK) |
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89 return ERR; |
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90 rdman->max_dirty_areas = max_dirty_areas; |
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91 } |
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92 |
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93 rdman->dirty_areas[rdman->n_dirty_areas++] = area; |
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94 return OK; |
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95 } |
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96 |
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97 static void area_to_positions(area_t *area, co_aix (*poses)[2]) { |
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98 poses[0][0] = area->x; |
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99 poses[0][1] = area->y; |
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100 poses[1][0] = area->x + area->w; |
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101 poses[1][1] = area->y + area->h;; |
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102 } |
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103 |
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104 int redraw_man_init(redraw_man_t *rdman, cairo_t *cr, cairo_t *backend) { |
12 | 105 extern void redraw_man_destroy(redraw_man_t *rdman); |
106 | |
107 memset(rdman, 0, sizeof(redraw_man_t)); | |
108 | |
109 rdman->geo_pool = elmpool_new(sizeof(geo_t), 128); | |
110 if(rdman->geo_pool == NULL) | |
111 return ERR; | |
112 | |
113 rdman->coord_pool = elmpool_new(sizeof(coord_t), 16); | |
114 if(rdman->coord_pool == NULL) { | |
115 elmpool_free(rdman->geo_pool); | |
116 return ERR; | |
117 } | |
118 | |
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119 rdman->shnode_pool = elmpool_new(sizeof(shnode_t), 16); |
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120 if(rdman->shnode_pool == NULL) { |
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121 elmpool_free(rdman->geo_pool); |
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122 elmpool_free(rdman->coord_pool); |
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123 return ERR; |
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124 } |
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125 |
12 | 126 rdman->root_coord = elmpool_elm_alloc(rdman->coord_pool); |
127 if(rdman->root_coord == NULL) | |
128 redraw_man_destroy(rdman); | |
13 | 129 rdman->n_coords = 1; |
12 | 130 coord_init(rdman->root_coord, NULL); |
131 | |
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132 rdman->cr = cr; |
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133 rdman->backend = backend; |
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134 |
12 | 135 return OK; |
136 } | |
137 | |
138 void redraw_man_destroy(redraw_man_t *rdman) { | |
139 elmpool_free(rdman->coord_pool); | |
140 elmpool_free(rdman->geo_pool); | |
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141 elmpool_free(rdman->shnode_pool); |
13 | 142 if(rdman->dirty_coords) |
143 free(rdman->dirty_coords); | |
14 | 144 if(rdman->dirty_geos) |
145 free(rdman->dirty_geos); | |
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146 if(rdman->gen_geos) |
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147 free(rdman->gen_geos); |
12 | 148 } |
149 | |
150 | |
151 #define ASSERT(x) | |
152 /* | |
153 * Change transformation matrix | |
154 * - update aggregated transformation matrix | |
155 * - of coord_t object been changed. | |
156 * - of children coord_t objects. | |
157 * - redraw members of coord_t objects. | |
158 * - redraw shape objects they are overlaid with members. | |
159 * - find out overlaid shape objects. | |
160 * - geo_t of a coord_t object | |
161 * - can make finding more efficiency. | |
162 * - fill overlay geo_t objects of members. | |
163 * | |
164 * Change a shape object | |
165 * - redraw changed object. | |
166 * - redraw shape objects they are overlaid with changed object. | |
167 * - find out overlaid shape objects. | |
168 * | |
169 * That coord and geo of shape objects are setted by user code | |
170 * give user code a chance to collect coord and geo objects together | |
171 * and gain interest of higher cache hit rate. | |
172 */ | |
173 | |
174 /*! \brief Find out all affected shape objects. | |
175 * | |
176 * Find out all shape objects that are overalid with geo_t of | |
177 * a geometry changed object. | |
178 * | |
179 * Linear scan geo_t objects of all shape objects in all_shapes | |
180 * list of a redraw_man_t object. | |
181 */ | |
182 int rdman_find_overlaid_shapes(redraw_man_t *rdman, geo_t *geo, | |
183 geo_t ***overlays) { | |
184 int n_geos; | |
185 geo_t **geos; | |
186 geo_t *geo_cur; | |
187 int n_overlays; | |
188 geo_t **_overlays; | |
189 int i; | |
190 | |
191 n_geos = rdman->n_geos; | |
192 | |
193 geos = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
194 if(geos == NULL) | |
195 return -1; | |
196 | |
197 _overlays = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
198 if(geos == NULL) { | |
199 free(geos); | |
200 return -1; | |
201 } | |
202 | |
203 geo_cur = STAILQ_HEAD(rdman->all_geos); | |
204 for(i = 0; i < n_geos; i++) { | |
205 geos[i] = geo_cur; | |
206 geo_cur = STAILQ_NEXT(geo_t, next, geo_cur); | |
207 } | |
208 geo_mark_overlay(geo, n_geos, geos, &n_overlays, _overlays); | |
209 | |
210 free(geos); | |
211 *overlays = _overlays; | |
212 | |
213 return n_overlays; | |
214 } | |
215 | |
216 int rdman_add_shape(redraw_man_t *rdman, shape_t *shape, coord_t *coord) { | |
217 geo_t *geo; | |
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218 #ifdef GEO_ORDER |
13 | 219 geo_t *visit; |
220 unsigned int next_order; | |
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221 #endif |
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222 int r; |
12 | 223 |
224 geo = elmpool_elm_alloc(rdman->geo_pool); | |
225 if(geo == NULL) | |
226 return ERR; | |
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227 |
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228 geo_init(geo); |
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229 |
12 | 230 sh_attach_geo(shape, geo); |
231 STAILQ_INS_TAIL(rdman->all_geos, geo_t, next, geo); | |
232 rdman->n_geos++; | |
13 | 233 |
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234 #ifdef GEO_ORDER |
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235 /* TODO: remove order number. */ |
13 | 236 geo->order = ++rdman->next_geo_order; |
237 if(geo->order == 0) { | |
238 next_order = 0; | |
239 for(visit = STAILQ_HEAD(rdman->all_geos); | |
240 visit != NULL; | |
241 visit = STAILQ_NEXT(geo_t, next, visit)) | |
242 visit->order = ++next_order; | |
243 rdman->next_geo_order = next_order; | |
244 } | |
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245 #endif |
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246 |
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247 /* New one should be dirty to recompute it when drawing. */ |
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248 geo->flags |= GEF_DIRTY; |
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249 r = add_dirty_geo(rdman, geo); |
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250 if(r != OK) |
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251 return ERR; |
13 | 252 |
12 | 253 sh_attach_coord(shape, coord); |
254 | |
255 return OK; | |
256 } | |
257 | |
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258 /*! \brief Remove a shape object from redraw manager. |
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259 * |
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260 * TODO: redraw shape objects that overlaid with removed one. |
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261 */ |
12 | 262 int rdman_remove_shape(redraw_man_t *rdman, shape_t *shape) { |
263 STAILQ_REMOVE(rdman->all_geos, geo_t, next, shape->geo); | |
264 elmpool_elm_free(rdman->geo_pool, shape->geo); | |
265 sh_detach_geo(shape); | |
266 rdman->n_geos--; | |
267 sh_detach_coord(shape); | |
268 return OK; | |
269 } | |
270 | |
271 coord_t *rdman_coord_new(redraw_man_t *rdman, coord_t *parent) { | |
13 | 272 coord_t *coord, *root_coord; |
273 coord_t *visit; | |
12 | 274 |
275 coord = elmpool_elm_alloc(rdman->coord_pool); | |
276 if(coord == NULL) | |
277 return NULL; | |
278 | |
279 coord_init(coord, parent); | |
13 | 280 rdman->n_coords++; |
281 | |
282 coord->order = ++rdman->next_coord_order; | |
283 if(coord->order == 0) { | |
284 rdman->next_coord_order = 0; | |
285 root_coord = visit = rdman->root_coord; | |
286 /* skip root coord. */ | |
287 visit = preorder_coord_subtree(root_coord, visit); | |
288 while(visit) { | |
289 visit->order = ++rdman->next_coord_order; | |
290 visit = preorder_coord_subtree(root_coord, visit); | |
291 } | |
292 } | |
12 | 293 |
294 return coord; | |
295 } | |
296 | |
297 /*! \brief Free a coord of a redraw_man_t object. | |
298 * | |
299 * \param coord is a coord_t without children and members. | |
300 * \return 0 for successful, -1 for error. | |
301 */ | |
302 int rdman_coord_free(redraw_man_t *rdman, coord_t *coord) { | |
303 coord_t *parent; | |
304 | |
305 parent = coord->parent; | |
306 if(parent == NULL) | |
307 return ERR; | |
308 | |
309 if(STAILQ_HEAD(coord->members) != NULL) | |
310 return ERR; | |
311 | |
312 if(STAILQ_HEAD(coord->children) != NULL) | |
313 return ERR; | |
314 | |
315 STAILQ_REMOVE(parent->children, coord_t, sibling, coord); | |
316 elmpool_elm_free(rdman->coord_pool, coord); | |
13 | 317 rdman->n_coords--; |
318 | |
319 return OK; | |
320 } | |
321 | |
322 /*! \brief Mark a coord is changed. | |
323 * | |
324 * A changed coord_t object is marked as dirty and put | |
325 * into dirty_coords list. | |
326 */ | |
327 int rdman_coord_changed(redraw_man_t *rdman, coord_t *coord) { | |
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328 coord_t *child; |
13 | 329 int max_dirty_coords; |
330 int r; | |
331 | |
332 if(coord->flags & COF_DIRTY) | |
333 return OK; | |
334 | |
335 if(rdman->n_dirty_coords >= rdman->max_dirty_coords) { | |
336 /* Max of dirty_coords is not big enough. */ | |
337 max_dirty_coords = rdman->max_dirty_coords + 16; | |
338 | |
339 r = extend_memblk((void **)&rdman->dirty_coords, | |
340 sizeof(coord_t *) * rdman->n_dirty_coords, | |
341 sizeof(coord_t *) * max_dirty_coords); | |
342 rdman->max_dirty_coords = max_dirty_coords; | |
343 } | |
344 | |
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345 /* Make the coord and child coords dirty. */ |
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346 for(child = coord; |
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347 child != NULL; |
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348 child = preorder_coord_subtree(coord, child)) { |
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349 rdman->dirty_coords[rdman->n_dirty_coords++] = coord; |
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350 coord->flags |= COF_DIRTY; |
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351 } |
13 | 352 |
353 return OK; | |
354 } | |
355 | |
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356 static int _rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
13 | 357 geo_t *geo; |
358 int r; | |
359 | |
360 geo = shape->geo; | |
361 | |
362 if(geo->flags & GEF_DIRTY) | |
363 return OK; | |
364 | |
365 r = add_dirty_geo(rdman, geo); | |
366 if(r == ERR) | |
367 return ERR; | |
368 geo->flags |= GEF_DIRTY; | |
12 | 369 |
370 return OK; | |
371 } | |
372 | |
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373 /*! \brief Mark a shape is changed. |
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374 * |
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375 * The geo_t object of a changed shape is mark as dirty and |
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376 * put into dirty_geos list. |
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377 */ |
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378 int rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
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379 return _rdman_shape_changed(rdman, shape); |
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380 } |
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381 |
29 | 382 int rdman_paint_changed(redraw_man_t *rdman, paint_t *paint) { |
383 shnode_t *node; | |
384 int r; | |
385 | |
386 for(node = STAILQ_HEAD(paint->members); | |
387 node != NULL; | |
388 node = STAILQ_NEXT(shnode_t, next, node)) { | |
389 r = _rdman_shape_changed(rdman, node->shape); | |
390 if(r != OK) | |
391 return ERR; | |
392 } | |
393 return OK; | |
394 } | |
395 | |
28 | 396 /* Clean dirties */ |
397 | |
398 static void clean_shape(shape_t *shape) { | |
399 switch(shape->sh_type) { | |
400 case SHT_PATH: | |
401 sh_path_transform(shape); | |
402 break; | |
403 case SHT_TEXT: | |
404 sh_text_transform(shape); | |
405 break; | |
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406 case SHT_RECT: |
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407 sh_rect_transform(shape); |
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408 break; |
28 | 409 #ifdef UNITTEST |
410 default: | |
411 sh_dummy_transform(shape); | |
412 break; | |
413 #endif /* UNITTEST */ | |
414 } | |
415 shape->geo->flags &= ~GEF_DIRTY; | |
416 } | |
417 | |
418 static int clean_coord(coord_t *coord) { | |
419 shape_t *shape; | |
420 geo_t *geo; | |
421 co_aix (*poses)[2]; | |
422 int cnt, pos_cnt; | |
423 | |
424 compute_aggr_of_coord(coord); | |
425 | |
426 /* Clean member shapes. */ | |
427 cnt = 0; | |
428 for(shape = STAILQ_HEAD(coord->members); | |
429 shape != NULL; | |
430 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { | |
431 geo = shape->geo; | |
432 SWAP(geo->cur_area, geo->last_area, area_t *); | |
433 clean_shape(shape); | |
434 cnt++; | |
435 } | |
436 | |
437 /* Compute area of the coord. */ | |
438 poses = (co_aix (*)[2])malloc(sizeof(co_aix [2]) * 2 * cnt); | |
439 if(poses == NULL) | |
440 return ERR; | |
441 | |
442 pos_cnt = 0; | |
443 for(shape = STAILQ_HEAD(coord->members); | |
444 shape != NULL; | |
445 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { | |
446 geo = shape->geo; | |
447 | |
448 area_to_positions(geo->cur_area, poses + pos_cnt); | |
449 pos_cnt += 2; | |
450 } | |
451 | |
452 SWAP(coord->cur_area, coord->last_area, area_t *); | |
453 area_init(coord->cur_area, pos_cnt, poses); | |
454 free(poses); | |
455 | |
456 coord->flags &= ~COF_DIRTY; | |
457 | |
458 return OK; | |
459 } | |
460 | |
461 static int clean_rdman_coords(redraw_man_t *rdman) { | |
462 coord_t *coord; | |
463 coord_t **dirty_coords; | |
464 int n_dirty_coords; | |
465 int i, r; | |
466 | |
467 n_dirty_coords = rdman->n_dirty_coords; | |
468 if(n_dirty_coords > 0) { | |
469 dirty_coords = rdman->dirty_coords; | |
470 _insert_sort((void **)dirty_coords, n_dirty_coords, | |
471 OFFSET(coord_t, order)); | |
472 for(i = 0; i < n_dirty_coords; i++) { | |
473 coord = dirty_coords[i]; | |
474 if(!(coord->flags & COF_DIRTY)) | |
475 continue; | |
476 r = clean_coord(coord); | |
477 if(r != OK) | |
478 return ERR; | |
479 /* These two steps can be avoided for drawing all. */ | |
480 add_dirty_area(rdman, &coord->areas[0]); | |
481 add_dirty_area(rdman, &coord->areas[1]); | |
482 } | |
483 rdman->n_dirty_coords = 0; | |
484 } | |
485 return OK; | |
486 } | |
487 | |
488 static int clean_rdman_geos(redraw_man_t *rdman) { | |
489 int i; | |
490 int n_dirty_geos; | |
491 geo_t **dirty_geos; | |
492 geo_t *visit_geo; | |
493 | |
494 n_dirty_geos = rdman->n_dirty_geos; | |
495 if(n_dirty_geos > 0) { | |
496 dirty_geos = rdman->dirty_geos; | |
497 for(i = 0; i < n_dirty_geos; i++) { | |
498 visit_geo = dirty_geos[i]; | |
499 if(!(visit_geo->flags & GEF_DIRTY)) | |
500 continue; | |
501 | |
502 SWAP(visit_geo->cur_area, visit_geo->last_area, area_t *); | |
503 clean_shape(visit_geo->shape); | |
504 add_dirty_area(rdman, visit_geo->cur_area); | |
505 add_dirty_area(rdman, visit_geo->last_area); | |
506 } | |
507 rdman->n_dirty_geos = 0; | |
508 } | |
509 | |
510 return OK; | |
511 } | |
512 | |
29 | 513 static int clean_rdman_dirties(redraw_man_t *rdman) { |
514 int r; | |
515 | |
516 r = clean_rdman_coords(rdman); | |
517 if(r != OK) | |
518 return ERR; | |
519 | |
520 r = clean_rdman_geos(rdman); | |
521 if(r != OK) | |
522 return ERR; | |
523 | |
524 return OK; | |
525 } | |
526 | |
527 | |
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528 /* Drawing and Redrawing |
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529 * ============================================================ |
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530 */ |
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531 |
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532 #ifndef UNITTEST |
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533 static void set_shape_stroke_param(shape_t *shape, cairo_t *cr) { |
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534 cairo_set_line_width(cr, shape->stroke_width); |
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535 } |
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536 |
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537 static void fill_path_preserve(redraw_man_t *rdman) { |
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538 cairo_fill_preserve(rdman->cr); |
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539 } |
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540 |
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541 static void fill_path(redraw_man_t *rdman) { |
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542 cairo_fill(rdman->cr); |
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543 } |
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544 |
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545 static void stroke_path(redraw_man_t *rdman) { |
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546 cairo_stroke(rdman->cr); |
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547 } |
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548 #else |
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549 static void set_shape_stroke_param(shape_t *shape, cairo_t *cr) { |
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550 } |
33
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551 |
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552 static void fill_path_preserve(redraw_man_t *rdman) { |
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553 } |
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554 |
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555 static void fill_path(redraw_man_t *rdman) { |
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556 } |
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557 |
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558 static void stroke_path(redraw_man_t *rdman) { |
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559 } |
26
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560 #endif |
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561 |
22 | 562 static void draw_shape(redraw_man_t *rdman, shape_t *shape) { |
563 paint_t *fill, *stroke; | |
18
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564 |
33
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565 if(shape->fill || shape->stroke) { |
19 | 566 switch(shape->sh_type) { |
567 case SHT_PATH: | |
33
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568 sh_path_draw(shape, rdman->cr); |
19 | 569 break; |
27 | 570 case SHT_TEXT: |
33
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571 sh_text_draw(shape, rdman->cr); |
27 | 572 break; |
35
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573 case SHT_RECT: |
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574 sh_rect_draw(shape, rdman->cr); |
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575 break; |
17
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576 #ifdef UNITTEST |
19 | 577 default: |
20
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578 sh_dummy_fill(shape, rdman->cr); |
19 | 579 break; |
17
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580 #endif /* UNITTEST */ |
19 | 581 } |
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582 |
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583 fill = shape->fill; |
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584 if(shape->fill) { |
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585 fill->prepare(fill, rdman->cr); |
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586 if(shape->stroke) |
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587 fill_path_preserve(rdman); |
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588 else |
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589 fill_path(rdman); |
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590 } |
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591 |
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592 stroke = shape->stroke; |
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593 if(stroke) { |
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594 stroke->prepare(stroke, rdman->cr); |
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595 set_shape_stroke_param(shape, rdman->cr); |
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596 stroke_path(rdman); |
22 | 597 } |
598 } | |
13 | 599 } |
600 | |
17
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601 #ifndef UNITTEST |
25
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602 static void clean_canvas(cairo_t *cr) { |
16
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603 /* TODO: clean to background color. */ |
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604 cairo_set_source_rgb(cr, 0, 0, 0); |
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605 cairo_paint(cr); |
16
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606 } |
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607 |
24
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608 static void make_clip(cairo_t *cr, int n_dirty_areas, |
15
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609 area_t **dirty_areas) { |
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610 int i; |
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611 area_t *area; |
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612 |
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613 for(i = 0; i < n_dirty_areas; i++) { |
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614 area = dirty_areas[i]; |
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615 cairo_rectangle(cr, area->x, area->y, area->w, area->h); |
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616 } |
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617 cairo_clip(cr); |
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618 } |
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619 |
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620 static void reset_clip(redraw_man_t *rdman) { |
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621 cairo_reset_clip(rdman->backend); |
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622 } |
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623 |
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624 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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625 area_t **dirty_areas) { |
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626 if(n_dirty_areas) |
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627 make_clip(rdman->backend, n_dirty_areas, dirty_areas); |
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628 |
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629 cairo_paint(rdman->backend); |
17
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630 } |
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631 #else /* UNITTEST */ |
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632 static void clean_canvas(cairo_t *cr) { |
24
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633 } |
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634 |
17
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635 static void reset_clip(redraw_man_t *rdman) { |
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636 } |
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637 |
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638 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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639 area_t **dirty_areas) { |
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640 } |
17
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641 #endif /* UNITTEST */ |
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642 |
22 | 643 static void draw_shapes_in_areas(redraw_man_t *rdman, |
15
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644 int n_areas, |
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645 area_t **areas) { |
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646 geo_t *visit_geo; |
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647 int i; |
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648 |
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649 for(visit_geo = STAILQ_HEAD(rdman->all_geos); |
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650 visit_geo != NULL; |
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651 visit_geo = STAILQ_NEXT(geo_t, next, visit_geo)) { |
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652 if(visit_geo->flags & GEF_DIRTY) |
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653 clean_shape(visit_geo->shape); |
15
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654 for(i = 0; i < n_areas; i++) { |
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655 if(is_overlay(visit_geo->cur_area, areas[i])) { |
22 | 656 draw_shape(rdman, visit_geo->shape); |
15
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657 break; |
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658 } |
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659 } |
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660 } |
13 | 661 } |
662 | |
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663 |
13 | 664 /*! \brief Re-draw all changed shapes or shapes affected by changed coords. |
665 * | |
666 * A coord object has a geo to keep track the range that it's members will | |
667 * draw on. Geo of a coord should be recomputed when the coord is changed. | |
668 * Geo of a coord used to accelerate finding overlay shape objects of | |
669 * a specified geo. A coord object also must be recomputed when one of | |
670 * it's members is changed. | |
671 * | |
672 * New and old geo values of a coord object that is recomputed for | |
673 * changing of it-self must be used to find overlay shape objects. | |
674 * New and old geo values of a shape should also be used to find | |
675 * overlay shape objects, too. If a shape's coord is changed, shape's | |
676 * geo object is not used to find overlay shape objects any more. | |
677 * | |
678 * steps: | |
679 * - update chagned coord objects | |
14 | 680 * - recompute area for changed coord objects |
13 | 681 * - recompute geo for members shape objects |
14 | 682 * - clear dirty of geo for members to prevent from |
683 * recomputing for change of shape objects. | |
684 * - add old and new area value to list of dirty areas. | |
13 | 685 * - recompute geo for changed shape objects |
14 | 686 * - only if a shape object is dirty. |
687 * - put new and old value of area of geo to list of dirty areas. | |
688 * - Scan all shapes and redraw shapes overlaid with dirty areas. | |
13 | 689 * |
14 | 690 * dirty flag of coord objects is cleared after update. |
15
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691 * dirty flag of geo objects is also cleared after recomputing. |
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692 * Clean dirty flag can prevent redundant computing for geo and |
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693 * corod objects. |
14 | 694 * |
13 | 695 */ |
696 int rdman_redraw_changed(redraw_man_t *rdman) { | |
28 | 697 int r; |
13 | 698 int n_dirty_areas; |
14 | 699 area_t **dirty_areas; |
13 | 700 |
29 | 701 r = clean_rdman_dirties(rdman); |
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702 if(r != OK) |
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703 return ERR; |
13 | 704 |
15
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705 n_dirty_areas = rdman->n_dirty_areas; |
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706 dirty_areas = rdman->dirty_areas; |
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707 if(n_dirty_areas > 0) { |
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|
708 clean_canvas(rdman->cr); |
22 | 709 draw_shapes_in_areas(rdman, n_dirty_areas, dirty_areas); |
24
e598bc809c0f
No more flash when animation.
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parents:
23
diff
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|
710 copy_cr_2_backend(rdman, rdman->n_dirty_areas, rdman->dirty_areas); |
15
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X_main uses rdman_redraw_all()
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parents:
14
diff
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|
711 rdman->n_dirty_areas = 0; |
17
41f0907b27ac
Unittest for rdman_redraw_changed().
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parents:
16
diff
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|
712 reset_clip(rdman); |
15
c2ce186a5c37
X_main uses rdman_redraw_all()
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parents:
14
diff
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|
713 } |
16
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A simple animation using rdman_redraw_changed().
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parents:
15
diff
changeset
|
714 rdman->n_dirty_areas = 0; |
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A simple animation using rdman_redraw_changed().
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15
diff
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715 |
15
c2ce186a5c37
X_main uses rdman_redraw_all()
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parents:
14
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|
716 return OK; |
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X_main uses rdman_redraw_all()
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parents:
14
diff
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|
717 } |
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X_main uses rdman_redraw_all()
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parents:
14
diff
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|
718 |
38 | 719 /* NOTE: Before redrawing, the canvas/surface must be cleaned. |
720 * NOTE: After redrawing, the content must be copied to the backend surface. | |
721 */ | |
722 | |
15
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X_main uses rdman_redraw_all()
Thinker K.F. Li <thinker@branda.to>
parents:
14
diff
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|
723 int rdman_redraw_all(redraw_man_t *rdman) { |
c2ce186a5c37
X_main uses rdman_redraw_all()
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parents:
14
diff
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|
724 geo_t *geo; |
29 | 725 int r; |
15
c2ce186a5c37
X_main uses rdman_redraw_all()
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parents:
14
diff
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|
726 |
29 | 727 r = clean_rdman_dirties(rdman); |
728 if(r != OK) | |
729 return ERR; | |
16
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A simple animation using rdman_redraw_changed().
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parents:
15
diff
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|
730 |
37 | 731 clean_canvas(rdman->cr); |
732 | |
15
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X_main uses rdman_redraw_all()
Thinker K.F. Li <thinker@branda.to>
parents:
14
diff
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|
733 for(geo = STAILQ_HEAD(rdman->all_geos); |
c2ce186a5c37
X_main uses rdman_redraw_all()
Thinker K.F. Li <thinker@branda.to>
parents:
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|
734 geo != NULL; |
c2ce186a5c37
X_main uses rdman_redraw_all()
Thinker K.F. Li <thinker@branda.to>
parents:
14
diff
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|
735 geo = STAILQ_NEXT(geo_t, next, geo)) { |
22 | 736 draw_shape(rdman, geo->shape); |
13 | 737 } |
24
e598bc809c0f
No more flash when animation.
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parents:
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diff
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|
738 copy_cr_2_backend(rdman, 0, NULL); |
29 | 739 rdman->n_dirty_areas = 0; |
13 | 740 |
741 return OK; | |
12 | 742 } |
743 | |
37 | 744 int rdman_redraw_area(redraw_man_t *rdman, co_aix x, co_aix y, |
745 co_aix w, co_aix h) { | |
746 area_t area; | |
747 int r; | |
748 | |
749 area.x = x; | |
750 area.y = y; | |
751 area.w = w; | |
752 area.h = h; | |
753 add_dirty_area(rdman, &area); | |
754 | |
755 r = rdman_redraw_changed(rdman); | |
756 | |
757 return r; | |
758 } | |
759 | |
30
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Accept mouse/pointer event and hint the shape that the pointer is over.
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parents:
29
diff
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|
760 int rdman_force_clean(redraw_man_t *rdman) { |
e06a4a667ce2
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parents:
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diff
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761 int r; |
e06a4a667ce2
Accept mouse/pointer event and hint the shape that the pointer is over.
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parents:
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diff
changeset
|
762 |
e06a4a667ce2
Accept mouse/pointer event and hint the shape that the pointer is over.
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parents:
29
diff
changeset
|
763 r = clean_rdman_dirties(rdman); |
e06a4a667ce2
Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
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|
764 |
e06a4a667ce2
Accept mouse/pointer event and hint the shape that the pointer is over.
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parents:
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diff
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|
765 return r; |
e06a4a667ce2
Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
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|
766 } |
e06a4a667ce2
Accept mouse/pointer event and hint the shape that the pointer is over.
Thinker K.F. Li <thinker@branda.to>
parents:
29
diff
changeset
|
767 |
18
0f3baa488a62
Support solid color paint for fill.
Thinker K.F. Li <thinker@branda.to>
parents:
17
diff
changeset
|
768 shnode_t *shnode_new(redraw_man_t *rdman, shape_t *shape) { |
0f3baa488a62
Support solid color paint for fill.
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parents:
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diff
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|
769 shnode_t *node; |
0f3baa488a62
Support solid color paint for fill.
Thinker K.F. Li <thinker@branda.to>
parents:
17
diff
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770 |
0f3baa488a62
Support solid color paint for fill.
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diff
changeset
|
771 node = (shnode_t *)elmpool_elm_alloc(rdman->shnode_pool); |
0f3baa488a62
Support solid color paint for fill.
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diff
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|
772 if(node) { |
0f3baa488a62
Support solid color paint for fill.
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parents:
17
diff
changeset
|
773 node->shape = shape; |
0f3baa488a62
Support solid color paint for fill.
Thinker K.F. Li <thinker@branda.to>
parents:
17
diff
changeset
|
774 node->next = NULL; |
0f3baa488a62
Support solid color paint for fill.
Thinker K.F. Li <thinker@branda.to>
parents:
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diff
changeset
|
775 } |
0f3baa488a62
Support solid color paint for fill.
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parents:
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|
776 return node; |
0f3baa488a62
Support solid color paint for fill.
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diff
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|
777 } |
0f3baa488a62
Support solid color paint for fill.
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diff
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|
778 |
12 | 779 /* |
16
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parents:
15
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780 * Dirty of geo |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
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781 * A geo is dirty when any of the shape, size or positions is changed. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
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782 * It's geo and positions should be recomputed before drawing. So, |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
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783 * dirty geos are marked as dirty and put into dirty_geos list. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
diff
changeset
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784 * The list is inspected before drawing to make sure the right shape, |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
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changeset
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785 * size, and positions. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
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786 * |
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A simple animation using rdman_redraw_changed().
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parents:
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diff
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787 * Dirty of coord |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
diff
changeset
|
788 * A coord is dirty when it's transformation matrix being changed. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
diff
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789 * Dirty coords are marked as dirty and put into dirty_coords list. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
diff
changeset
|
790 * Once a coord is dirty, every member geos of it are also dirty. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
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diff
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791 * Because, their shape, size and positions will be changed. But, |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
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792 * they are not marked as dirty and put into dirty_geos list, since |
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A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
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793 * all these member geos will be recomputed for computing new current |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
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794 * area of the coord. The changes of a coord also affect child |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
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795 * coords. Once parent is dirty, all children are also dirty for |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
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|
796 * their aggregate matrix out of date. Dirty coords should be |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
diff
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797 * clean in preorder of tree traversal. The dirty_coords list |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
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diff
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|
798 * are sorted to keep the order before cleaning. |
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A simple animation using rdman_redraw_changed().
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parents:
15
diff
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|
799 * Whenever a coord is marked dirty and put into dirty_coords list, |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
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800 * all it's children should also be marked and put. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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diff
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|
801 * |
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A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
diff
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802 * The procedure of clean coords comprises recomputing aggregate |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
diff
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|
803 * tranform matrix and area where members spreading in. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
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diff
changeset
|
804 * |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
diff
changeset
|
805 * The list is inspected before drawing to recompute new shape, size, |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
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changeset
|
806 * and positions of member geos of coords in the list. The drity |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
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diff
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|
807 * flag of member geos will be clean. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
15
diff
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|
808 * |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
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diff
changeset
|
809 * Clean coords should be performed before clean geos, since clean |
e17e12b112c4
A simple animation using rdman_redraw_changed().
Thinker K.F. Li <thinker@branda.to>
parents:
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|
810 * coords will also clean member geos. |
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
15
diff
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|
811 */ |
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A simple animation using rdman_redraw_changed().
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parents:
15
diff
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|
812 |
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A simple animation using rdman_redraw_changed().
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parents:
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diff
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813 /* |
12 | 814 * When redraw an area, the affected elements may also extend to |
815 * outside of the area. Since the order of drawing will change | |
816 * the result, it will infect more and more elements to keep | |
817 * drawing order althrough they are overlaid directly with | |
818 * specified area. | |
819 * | |
820 * To fix the problem, we don't extend the set of redrawing to | |
821 * elements they are not overliad directly. The redrawing is | |
822 * performed on a temporary surface, clipped to fit the area, and | |
823 * update only specified area on the destinate surface. | |
824 */ | |
825 | |
826 /* | |
827 * To accelerate speed of transformation, when a matrix changed, | |
828 * transformation should be aggregated and computed in a loop. | |
829 * It can get intereset of higher hit rate of cache. | |
830 * - shapes prvoide list of positions needed to be transformed. | |
831 * - redraw_man transforms positions from shapes. | |
832 * - shapes drawing with result of transforms. | |
833 * - shapes should be called to give them a chance to update geometries. | |
834 */ | |
835 | |
13 | 836 /* |
837 * functions: | |
838 * - redraw all | |
839 * - redraw changed | |
840 */ | |
841 | |
12 | 842 #ifdef UNITTEST |
843 | |
844 #include <CUnit/Basic.h> | |
19 | 845 #include "paint.h" |
12 | 846 |
847 struct _sh_dummy { | |
848 shape_t shape; | |
849 co_aix x, y; | |
850 co_aix w, h; | |
17
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851 int draw_cnt; |
12 | 852 }; |
853 | |
854 shape_t *sh_dummy_new(co_aix x, co_aix y, co_aix w, co_aix h) { | |
855 sh_dummy_t *dummy; | |
856 | |
857 dummy = (sh_dummy_t *)malloc(sizeof(sh_dummy_t)); | |
858 if(dummy == NULL) | |
859 return NULL; | |
860 | |
17
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861 memset(dummy, 0, sizeof(sh_dummy_t)); |
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Unittest for rdman_redraw_changed().
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862 |
12 | 863 dummy->x = x; |
864 dummy->y = y; | |
865 dummy->w = w; | |
866 dummy->h = h; | |
17
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867 dummy->draw_cnt = 0; |
12 | 868 |
869 return (shape_t *)dummy; | |
870 } | |
871 | |
872 void sh_dummy_free(shape_t *sh) { | |
873 free(sh); | |
874 } | |
875 | |
876 void sh_dummy_transform(shape_t *shape) { | |
877 sh_dummy_t *dummy = (sh_dummy_t *)shape; | |
878 co_aix poses[2][2]; | |
879 co_aix x1, y1, x2, y2; | |
880 | |
881 if(shape->geo && shape->coord) { | |
882 x1 = dummy->x; | |
883 y1 = dummy->y; | |
884 x2 = x1 + dummy->w; | |
885 y2 = y1 + dummy->h; | |
886 | |
887 coord_trans_pos(shape->coord, &x1, &y1); | |
888 coord_trans_pos(shape->coord, &x2, &y2); | |
889 poses[0][0] = x1; | |
890 poses[0][1] = y1; | |
891 poses[1][0] = x2; | |
892 poses[1][1] = y2; | |
893 | |
17
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894 if(shape->geo) |
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Unittest for rdman_redraw_changed().
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|
895 geo_from_positions(shape->geo, 2, poses); |
12 | 896 } |
897 } | |
898 | |
20
74d3d5dc9aaa
rename XXX_draw() to XXX_fill()
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19
diff
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|
899 void sh_dummy_fill(shape_t *shape, cairo_t *cr) { |
17
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Unittest for rdman_redraw_changed().
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900 sh_dummy_t *dummy; |
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Unittest for rdman_redraw_changed().
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901 |
41f0907b27ac
Unittest for rdman_redraw_changed().
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902 dummy = (sh_dummy_t *)shape; |
41f0907b27ac
Unittest for rdman_redraw_changed().
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903 dummy->draw_cnt++; |
41f0907b27ac
Unittest for rdman_redraw_changed().
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904 } |
41f0907b27ac
Unittest for rdman_redraw_changed().
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diff
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|
905 |
19 | 906 static void dummy_paint_prepare(paint_t *paint, cairo_t *cr) { |
907 } | |
908 | |
909 static void dummy_paint_free(paint_t *paint) { | |
910 if(paint) | |
911 free(paint); | |
912 } | |
913 | |
914 paint_t *dummy_paint_new(redraw_man_t *rdman) { | |
915 paint_t *paint; | |
916 | |
917 paint = (paint_t *)malloc(sizeof(paint_t)); | |
918 if(paint == NULL) | |
919 return NULL; | |
920 | |
921 paint_init(paint, dummy_paint_prepare, dummy_paint_free); | |
922 | |
923 return paint; | |
924 } | |
925 | |
12 | 926 void test_rdman_find_overlaid_shapes(void) { |
927 redraw_man_t rdman; | |
928 geo_t geo; | |
929 coord_t *coords[3]; | |
930 shape_t *shapes[5]; | |
931 geo_t **overlays; | |
13 | 932 co_aix pos[2][2]; |
12 | 933 int n; |
934 int i; | |
935 | |
24
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23
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936 redraw_man_init(&rdman, NULL, NULL); |
12 | 937 coords[0] = rdman.root_coord; |
938 for(i = 1; i < 3; i++) { | |
939 coords[i] = rdman_coord_new(&rdman, rdman.root_coord); | |
940 } | |
941 for(i = 0; i < 5; i++) { | |
942 shapes[i] = sh_dummy_new(10 + i * 30, 10 + i * 20, 25, 15); | |
943 CU_ASSERT(shapes[i] != NULL); | |
944 } | |
945 for(i = 0; i < 3; i++) | |
946 rdman_add_shape(&rdman, shapes[i], coords[1]); | |
947 for(i = 3; i < 5; i++) | |
948 rdman_add_shape(&rdman, shapes[i], coords[2]); | |
949 | |
950 coords[1]->matrix[0] = 2; | |
951 coords[0]->matrix[4] = 2; | |
952 | |
953 update_aggr_matrix(coords[0]); | |
954 for(i = 0; i < 5; i++) | |
955 sh_dummy_transform(shapes[i]); | |
956 | |
13 | 957 pos[0][0] = 100; |
958 pos[0][1] = 120; | |
959 pos[1][0] = 100 + 140; | |
960 pos[1][1] = 120 + 40; | |
17
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961 geo_init(&geo); |
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962 geo_from_positions(&geo, 2, pos); |
12 | 963 |
964 n = rdman_find_overlaid_shapes(&rdman, &geo, &overlays); | |
965 CU_ASSERT(n == 2); | |
966 CU_ASSERT(overlays != NULL); | |
967 CU_ASSERT(overlays[0] == shapes[2]->geo); | |
968 CU_ASSERT(overlays[1] == shapes[3]->geo); | |
969 | |
970 free(overlays); | |
971 for(i = 0; i < 5; i++) | |
972 sh_dummy_free(shapes[i]); | |
973 | |
974 redraw_man_destroy(&rdman); | |
975 } | |
976 | |
17
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977 void test_rdman_redraw_changed(void) { |
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978 coord_t *coords[3]; |
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979 shape_t *shapes[3]; |
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980 sh_dummy_t **dummys; |
19 | 981 paint_t *paint; |
17
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982 redraw_man_t *rdman; |
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983 redraw_man_t _rdman; |
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984 int i; |
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985 |
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986 dummys = (sh_dummy_t **)shapes; |
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987 |
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988 rdman = &_rdman; |
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989 redraw_man_init(rdman, NULL, NULL); |
19 | 990 paint = dummy_paint_new(rdman); |
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991 for(i = 0; i < 3; i++) { |
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992 shapes[i] = sh_dummy_new(0, 0, 50, 50); |
19 | 993 rdman_paint_fill(rdman, paint, shapes[i]); |
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994 coords[i] = rdman_coord_new(rdman, rdman->root_coord); |
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995 coords[i]->matrix[2] = 10 + i * 100; |
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996 coords[i]->matrix[5] = 10 + i * 100; |
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997 rdman_coord_changed(rdman, coords[i]); |
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998 rdman_add_shape(rdman, shapes[i], coords[i]); |
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999 } |
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1000 rdman_redraw_all(rdman); |
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1001 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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1002 CU_ASSERT(dummys[1]->draw_cnt == 1); |
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1003 CU_ASSERT(dummys[2]->draw_cnt == 1); |
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1004 |
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1005 coords[2]->matrix[2] = 100; |
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1006 coords[2]->matrix[5] = 100; |
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1007 rdman_coord_changed(rdman, coords[2]); |
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1008 rdman_redraw_changed(rdman); |
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1009 |
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1010 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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1011 CU_ASSERT(dummys[1]->draw_cnt == 2); |
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1012 CU_ASSERT(dummys[2]->draw_cnt == 2); |
19 | 1013 |
1014 paint->free(paint); | |
1015 redraw_man_destroy(rdman); | |
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1016 } |
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1017 |
12 | 1018 CU_pSuite get_redraw_man_suite(void) { |
1019 CU_pSuite suite; | |
1020 | |
1021 suite = CU_add_suite("Suite_redraw_man", NULL, NULL); | |
1022 CU_ADD_TEST(suite, test_rdman_find_overlaid_shapes); | |
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1023 CU_ADD_TEST(suite, test_rdman_redraw_changed); |
12 | 1024 |
1025 return suite; | |
1026 } | |
1027 | |
1028 #endif /* UNITTEST */ |