Mercurial > MadButterfly
annotate src/redraw_man.c @ 27:19c603dd6ff9
Add text shape.
| author | Thinker K.F. Li <thinker@branda.to> |
|---|---|
| date | Mon, 04 Aug 2008 10:10:47 +0800 |
| parents | d50f33040de6 |
| children | 604bc90d509d |
| rev | line source |
|---|---|
| 12 | 1 #include <stdio.h> |
| 2 #include <stdlib.h> | |
| 3 #include <string.h> | |
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X_main uses rdman_redraw_all()
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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 if(new_buf != *buf) |
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54 *buf = new_buf; |
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55 |
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56 return OK; |
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57 } |
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58 |
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59 static int add_dirty_geo(redraw_man_t *rdman, geo_t *geo) { |
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60 int max_dirty_geos; |
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61 int r; |
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62 |
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63 if(rdman->n_dirty_geos >= rdman->max_dirty_geos) { |
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64 max_dirty_geos = rdman->n_geos; |
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65 r = extend_memblk((void **)&rdman->dirty_geos, |
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66 sizeof(geo_t *) * rdman->n_dirty_geos, |
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67 sizeof(geo_t *) * max_dirty_geos); |
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68 if(r != OK) |
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69 return ERR; |
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70 rdman->max_dirty_geos = max_dirty_geos; |
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71 } |
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72 |
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73 rdman->dirty_geos[rdman->n_dirty_geos++] = geo; |
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74 return OK; |
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75 } |
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76 |
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77 static int add_dirty_area(redraw_man_t *rdman, area_t *area) { |
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78 int max_dirty_areas; |
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79 int r; |
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80 |
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81 if(rdman->n_dirty_areas >= rdman->max_dirty_areas) { |
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82 /* every geo object and coord object can contribute 2 areas. */ |
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83 max_dirty_areas = (rdman->n_geos + rdman->n_coords) * 2; |
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84 r = extend_memblk((void **)&rdman->dirty_areas, |
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85 sizeof(area_t *) * rdman->n_dirty_areas, |
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86 sizeof(area_t *) * max_dirty_areas); |
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87 if(r != OK) |
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88 return ERR; |
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89 rdman->max_dirty_areas = max_dirty_areas; |
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90 } |
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91 |
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92 rdman->dirty_areas[rdman->n_dirty_areas++] = area; |
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93 return OK; |
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94 } |
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95 |
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96 static void clean_shape(shape_t *shape) { |
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97 switch(shape->sh_type) { |
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98 case SHT_PATH: |
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99 sh_path_transform(shape); |
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100 break; |
| 27 | 101 case SHT_TEXT: |
| 102 sh_text_transform(shape); | |
| 103 break; | |
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104 #ifdef UNITTEST |
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105 default: |
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106 sh_dummy_transform(shape); |
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107 break; |
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108 #endif /* UNITTEST */ |
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109 } |
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110 shape->geo->flags &= ~GEF_DIRTY; |
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111 } |
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112 |
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113 static void area_to_positions(area_t *area, co_aix (*poses)[2]) { |
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114 poses[0][0] = area->x; |
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115 poses[0][1] = area->y; |
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116 poses[1][0] = area->x + area->w; |
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117 poses[1][1] = area->y + area->h;; |
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118 } |
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119 |
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120 static int clean_coord(coord_t *coord) { |
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121 shape_t *shape; |
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122 geo_t *geo; |
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123 co_aix (*poses)[2]; |
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124 int cnt, pos_cnt; |
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125 |
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126 compute_aggr_of_coord(coord); |
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127 |
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128 /* Clean member shapes. */ |
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129 cnt = 0; |
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130 for(shape = STAILQ_HEAD(coord->members); |
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131 shape != NULL; |
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132 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { |
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133 geo = shape->geo; |
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134 SWAP(geo->cur_area, geo->last_area, area_t *); |
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135 clean_shape(shape); |
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136 cnt++; |
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137 } |
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138 |
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139 /* Compute area of the coord. */ |
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140 poses = (co_aix (*)[2])malloc(sizeof(co_aix [2]) * 2 * cnt); |
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141 if(poses == NULL) |
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142 return ERR; |
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143 |
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144 pos_cnt = 0; |
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145 for(shape = STAILQ_HEAD(coord->members); |
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146 shape != NULL; |
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147 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { |
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148 geo = shape->geo; |
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149 |
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150 area_to_positions(geo->cur_area, poses + pos_cnt); |
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151 pos_cnt += 2; |
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152 } |
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153 |
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154 SWAP(coord->cur_area, coord->last_area, area_t *); |
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155 area_init(coord->cur_area, pos_cnt, poses); |
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156 free(poses); |
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157 |
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158 coord->flags &= ~COF_DIRTY; |
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159 |
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160 return OK; |
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161 } |
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162 |
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163 static int clean_rdman_coords(redraw_man_t *rdman) { |
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164 coord_t *coord; |
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165 coord_t **dirty_coords; |
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166 int n_dirty_coords; |
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167 int i, r; |
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168 |
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169 n_dirty_coords = rdman->n_dirty_coords; |
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170 if(n_dirty_coords > 0) { |
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171 dirty_coords = rdman->dirty_coords; |
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172 _insert_sort((void **)dirty_coords, n_dirty_coords, |
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173 OFFSET(coord_t, order)); |
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174 for(i = 0; i < n_dirty_coords; i++) { |
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175 coord = dirty_coords[i]; |
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176 if(!(coord->flags & COF_DIRTY)) |
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177 continue; |
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178 r = clean_coord(coord); |
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179 if(r != OK) |
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180 return ERR; |
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181 /* These two steps can be avoided for drawing all. */ |
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182 add_dirty_area(rdman, &coord->areas[0]); |
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183 add_dirty_area(rdman, &coord->areas[1]); |
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184 } |
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185 rdman->n_dirty_coords = 0; |
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186 } |
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187 return OK; |
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188 } |
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189 |
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190 int redraw_man_init(redraw_man_t *rdman, cairo_t *cr, cairo_t *backend) { |
| 12 | 191 extern void redraw_man_destroy(redraw_man_t *rdman); |
| 192 | |
| 193 memset(rdman, 0, sizeof(redraw_man_t)); | |
| 194 | |
| 195 rdman->geo_pool = elmpool_new(sizeof(geo_t), 128); | |
| 196 if(rdman->geo_pool == NULL) | |
| 197 return ERR; | |
| 198 | |
| 199 rdman->coord_pool = elmpool_new(sizeof(coord_t), 16); | |
| 200 if(rdman->coord_pool == NULL) { | |
| 201 elmpool_free(rdman->geo_pool); | |
| 202 return ERR; | |
| 203 } | |
| 204 | |
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205 rdman->shnode_pool = elmpool_new(sizeof(shnode_t), 16); |
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206 if(rdman->shnode_pool == NULL) { |
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207 elmpool_free(rdman->geo_pool); |
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208 elmpool_free(rdman->coord_pool); |
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209 return ERR; |
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210 } |
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211 |
| 12 | 212 rdman->root_coord = elmpool_elm_alloc(rdman->coord_pool); |
| 213 if(rdman->root_coord == NULL) | |
| 214 redraw_man_destroy(rdman); | |
| 13 | 215 rdman->n_coords = 1; |
| 12 | 216 coord_init(rdman->root_coord, NULL); |
| 217 | |
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218 rdman->cr = cr; |
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219 rdman->backend = backend; |
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220 |
| 12 | 221 return OK; |
| 222 } | |
| 223 | |
| 224 void redraw_man_destroy(redraw_man_t *rdman) { | |
| 225 elmpool_free(rdman->coord_pool); | |
| 226 elmpool_free(rdman->geo_pool); | |
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227 elmpool_free(rdman->shnode_pool); |
| 13 | 228 if(rdman->dirty_coords) |
| 229 free(rdman->dirty_coords); | |
| 14 | 230 if(rdman->dirty_geos) |
| 231 free(rdman->dirty_geos); | |
| 12 | 232 } |
| 233 | |
| 234 | |
| 235 #define ASSERT(x) | |
| 236 /* | |
| 237 * Change transformation matrix | |
| 238 * - update aggregated transformation matrix | |
| 239 * - of coord_t object been changed. | |
| 240 * - of children coord_t objects. | |
| 241 * - redraw members of coord_t objects. | |
| 242 * - redraw shape objects they are overlaid with members. | |
| 243 * - find out overlaid shape objects. | |
| 244 * - geo_t of a coord_t object | |
| 245 * - can make finding more efficiency. | |
| 246 * - fill overlay geo_t objects of members. | |
| 247 * | |
| 248 * Change a shape object | |
| 249 * - redraw changed object. | |
| 250 * - redraw shape objects they are overlaid with changed object. | |
| 251 * - find out overlaid shape objects. | |
| 252 * | |
| 253 * That coord and geo of shape objects are setted by user code | |
| 254 * give user code a chance to collect coord and geo objects together | |
| 255 * and gain interest of higher cache hit rate. | |
| 256 */ | |
| 257 | |
| 258 /*! \brief Find out all affected shape objects. | |
| 259 * | |
| 260 * Find out all shape objects that are overalid with geo_t of | |
| 261 * a geometry changed object. | |
| 262 * | |
| 263 * Linear scan geo_t objects of all shape objects in all_shapes | |
| 264 * list of a redraw_man_t object. | |
| 265 */ | |
| 266 int rdman_find_overlaid_shapes(redraw_man_t *rdman, geo_t *geo, | |
| 267 geo_t ***overlays) { | |
| 268 int n_geos; | |
| 269 geo_t **geos; | |
| 270 geo_t *geo_cur; | |
| 271 int n_overlays; | |
| 272 geo_t **_overlays; | |
| 273 int i; | |
| 274 | |
| 275 n_geos = rdman->n_geos; | |
| 276 | |
| 277 geos = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
| 278 if(geos == NULL) | |
| 279 return -1; | |
| 280 | |
| 281 _overlays = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
| 282 if(geos == NULL) { | |
| 283 free(geos); | |
| 284 return -1; | |
| 285 } | |
| 286 | |
| 287 geo_cur = STAILQ_HEAD(rdman->all_geos); | |
| 288 for(i = 0; i < n_geos; i++) { | |
| 289 geos[i] = geo_cur; | |
| 290 geo_cur = STAILQ_NEXT(geo_t, next, geo_cur); | |
| 291 } | |
| 292 geo_mark_overlay(geo, n_geos, geos, &n_overlays, _overlays); | |
| 293 | |
| 294 free(geos); | |
| 295 *overlays = _overlays; | |
| 296 | |
| 297 return n_overlays; | |
| 298 } | |
| 299 | |
| 300 int rdman_add_shape(redraw_man_t *rdman, shape_t *shape, coord_t *coord) { | |
| 301 geo_t *geo; | |
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302 #ifdef GEO_ORDER |
| 13 | 303 geo_t *visit; |
| 304 unsigned int next_order; | |
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305 #endif |
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306 int r; |
| 12 | 307 |
| 308 geo = elmpool_elm_alloc(rdman->geo_pool); | |
| 309 if(geo == NULL) | |
| 310 return ERR; | |
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311 |
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312 geo_init(geo); |
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313 |
| 12 | 314 sh_attach_geo(shape, geo); |
| 315 STAILQ_INS_TAIL(rdman->all_geos, geo_t, next, geo); | |
| 316 rdman->n_geos++; | |
| 13 | 317 |
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318 #ifdef GEO_ORDER |
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319 /* TODO: remove order number. */ |
| 13 | 320 geo->order = ++rdman->next_geo_order; |
| 321 if(geo->order == 0) { | |
| 322 next_order = 0; | |
| 323 for(visit = STAILQ_HEAD(rdman->all_geos); | |
| 324 visit != NULL; | |
| 325 visit = STAILQ_NEXT(geo_t, next, visit)) | |
| 326 visit->order = ++next_order; | |
| 327 rdman->next_geo_order = next_order; | |
| 328 } | |
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329 #endif |
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330 |
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331 /* New one should be dirty to recompute it when drawing. */ |
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332 geo->flags |= GEF_DIRTY; |
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333 r = add_dirty_geo(rdman, geo); |
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334 if(r != OK) |
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335 return ERR; |
| 13 | 336 |
| 12 | 337 sh_attach_coord(shape, coord); |
| 338 | |
| 339 return OK; | |
| 340 } | |
| 341 | |
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342 /*! \brief Remove a shape object from redraw manager. |
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343 * |
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344 * TODO: redraw shape objects that overlaid with removed one. |
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345 */ |
| 12 | 346 int rdman_remove_shape(redraw_man_t *rdman, shape_t *shape) { |
| 347 STAILQ_REMOVE(rdman->all_geos, geo_t, next, shape->geo); | |
| 348 elmpool_elm_free(rdman->geo_pool, shape->geo); | |
| 349 sh_detach_geo(shape); | |
| 350 rdman->n_geos--; | |
| 351 sh_detach_coord(shape); | |
| 352 return OK; | |
| 353 } | |
| 354 | |
| 355 coord_t *rdman_coord_new(redraw_man_t *rdman, coord_t *parent) { | |
| 13 | 356 coord_t *coord, *root_coord; |
| 357 coord_t *visit; | |
| 12 | 358 |
| 359 coord = elmpool_elm_alloc(rdman->coord_pool); | |
| 360 if(coord == NULL) | |
| 361 return NULL; | |
| 362 | |
| 363 coord_init(coord, parent); | |
| 13 | 364 rdman->n_coords++; |
| 365 | |
| 366 coord->order = ++rdman->next_coord_order; | |
| 367 if(coord->order == 0) { | |
| 368 rdman->next_coord_order = 0; | |
| 369 root_coord = visit = rdman->root_coord; | |
| 370 /* skip root coord. */ | |
| 371 visit = preorder_coord_subtree(root_coord, visit); | |
| 372 while(visit) { | |
| 373 visit->order = ++rdman->next_coord_order; | |
| 374 visit = preorder_coord_subtree(root_coord, visit); | |
| 375 } | |
| 376 } | |
| 12 | 377 |
| 378 return coord; | |
| 379 } | |
| 380 | |
| 381 /*! \brief Free a coord of a redraw_man_t object. | |
| 382 * | |
| 383 * \param coord is a coord_t without children and members. | |
| 384 * \return 0 for successful, -1 for error. | |
| 385 */ | |
| 386 int rdman_coord_free(redraw_man_t *rdman, coord_t *coord) { | |
| 387 coord_t *parent; | |
| 388 | |
| 389 parent = coord->parent; | |
| 390 if(parent == NULL) | |
| 391 return ERR; | |
| 392 | |
| 393 if(STAILQ_HEAD(coord->members) != NULL) | |
| 394 return ERR; | |
| 395 | |
| 396 if(STAILQ_HEAD(coord->children) != NULL) | |
| 397 return ERR; | |
| 398 | |
| 399 STAILQ_REMOVE(parent->children, coord_t, sibling, coord); | |
| 400 elmpool_elm_free(rdman->coord_pool, coord); | |
| 13 | 401 rdman->n_coords--; |
| 402 | |
| 403 return OK; | |
| 404 } | |
| 405 | |
| 406 /*! \brief Mark a coord is changed. | |
| 407 * | |
| 408 * A changed coord_t object is marked as dirty and put | |
| 409 * into dirty_coords list. | |
| 410 */ | |
| 411 int rdman_coord_changed(redraw_man_t *rdman, coord_t *coord) { | |
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412 coord_t *child; |
| 13 | 413 int max_dirty_coords; |
| 414 int r; | |
| 415 | |
| 416 if(coord->flags & COF_DIRTY) | |
| 417 return OK; | |
| 418 | |
| 419 if(rdman->n_dirty_coords >= rdman->max_dirty_coords) { | |
| 420 /* Max of dirty_coords is not big enough. */ | |
| 421 max_dirty_coords = rdman->max_dirty_coords + 16; | |
| 422 | |
| 423 r = extend_memblk((void **)&rdman->dirty_coords, | |
| 424 sizeof(coord_t *) * rdman->n_dirty_coords, | |
| 425 sizeof(coord_t *) * max_dirty_coords); | |
| 426 rdman->max_dirty_coords = max_dirty_coords; | |
| 427 } | |
| 428 | |
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429 /* Make the coord and child coords dirty. */ |
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430 for(child = coord; |
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431 child != NULL; |
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432 child = preorder_coord_subtree(coord, child)) { |
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433 rdman->dirty_coords[rdman->n_dirty_coords++] = coord; |
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434 coord->flags |= COF_DIRTY; |
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435 } |
| 13 | 436 |
| 437 return OK; | |
| 438 } | |
| 439 | |
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440 static int _rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
| 13 | 441 geo_t *geo; |
| 442 int r; | |
| 443 | |
| 444 geo = shape->geo; | |
| 445 | |
| 446 if(geo->flags & GEF_DIRTY) | |
| 447 return OK; | |
| 448 | |
| 449 r = add_dirty_geo(rdman, geo); | |
| 450 if(r == ERR) | |
| 451 return ERR; | |
| 452 geo->flags |= GEF_DIRTY; | |
| 12 | 453 |
| 454 return OK; | |
| 455 } | |
| 456 | |
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457 /*! \brief Mark a shape is changed. |
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458 * |
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459 * The geo_t object of a changed shape is mark as dirty and |
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460 * put into dirty_geos list. |
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461 */ |
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462 int rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
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463 return _rdman_shape_changed(rdman, shape); |
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464 } |
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465 |
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466 /* Drawing and Redrawing |
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467 * ============================================================ |
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468 */ |
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469 |
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470 #ifndef UNITTEST |
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471 static void set_shape_stroke_param(shape_t *shape, cairo_t *cr) { |
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472 cairo_set_line_width(cr, shape->stroke_width); |
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473 } |
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474 #else |
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475 static void set_shape_stroke_param(shape_t *shape, cairo_t *cr) { |
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476 } |
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477 #endif |
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478 |
| 22 | 479 static void draw_shape(redraw_man_t *rdman, shape_t *shape) { |
| 480 paint_t *fill, *stroke; | |
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481 |
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482 fill = shape->fill; |
| 19 | 483 if(fill) { |
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484 fill->prepare(fill, rdman->cr); |
| 19 | 485 switch(shape->sh_type) { |
| 486 case SHT_PATH: | |
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487 sh_path_fill(shape, rdman->cr); |
| 19 | 488 break; |
| 27 | 489 case SHT_TEXT: |
| 490 sh_text_fill(shape, rdman->cr); | |
| 491 break; | |
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492 #ifdef UNITTEST |
| 19 | 493 default: |
|
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494 sh_dummy_fill(shape, rdman->cr); |
| 19 | 495 break; |
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496 #endif /* UNITTEST */ |
| 19 | 497 } |
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498 } |
| 22 | 499 stroke = shape->stroke; |
| 500 if(stroke) { | |
| 501 stroke->prepare(stroke, rdman->cr); | |
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502 set_shape_stroke_param(shape, rdman->cr); |
| 22 | 503 switch(shape->sh_type) { |
| 504 case SHT_PATH: | |
| 505 sh_path_stroke(shape, rdman->cr); | |
| 506 break; | |
| 27 | 507 case SHT_TEXT: |
| 508 sh_text_stroke(shape, rdman->cr); | |
| 509 break; | |
| 22 | 510 #ifdef UNITTEST |
| 511 default: | |
| 512 /* sh_dummy_fill(shape, rdman->cr); */ | |
| 513 break; | |
| 514 #endif /* UNITTEST */ | |
| 515 } | |
| 516 } | |
| 13 | 517 } |
| 518 | |
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519 #ifndef UNITTEST |
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520 static void clean_canvas(cairo_t *cr) { |
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521 /* TODO: clean to background color. */ |
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522 cairo_set_source_rgb(cr, 0, 0, 0); |
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523 cairo_paint(cr); |
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524 } |
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525 |
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526 static void make_clip(cairo_t *cr, int n_dirty_areas, |
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527 area_t **dirty_areas) { |
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528 int i; |
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529 area_t *area; |
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530 |
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531 for(i = 0; i < n_dirty_areas; i++) { |
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532 area = dirty_areas[i]; |
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533 cairo_rectangle(cr, area->x, area->y, area->w, area->h); |
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534 } |
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535 cairo_clip(cr); |
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536 } |
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537 |
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538 static void reset_clip(redraw_man_t *rdman) { |
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539 cairo_reset_clip(rdman->cr); |
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540 cairo_reset_clip(rdman->backend); |
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541 } |
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542 |
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543 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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544 area_t **dirty_areas) { |
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545 if(n_dirty_areas) |
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546 make_clip(rdman->backend, n_dirty_areas, dirty_areas); |
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547 |
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548 cairo_paint(rdman->backend); |
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549 } |
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550 #else /* UNITTEST */ |
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551 static void clean_canvas(cairo_t *cr) { |
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552 } |
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553 |
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554 static void make_clip(cairo_t *cr, int n_dirty_areas, |
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555 area_t **dirty_areas) { |
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556 } |
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557 |
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558 static void reset_clip(redraw_man_t *rdman) { |
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559 } |
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560 |
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561 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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562 area_t **dirty_areas) { |
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563 } |
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Unittest for rdman_redraw_changed().
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564 #endif /* UNITTEST */ |
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Unittest for rdman_redraw_changed().
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565 |
| 22 | 566 static void draw_shapes_in_areas(redraw_man_t *rdman, |
|
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567 int n_areas, |
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568 area_t **areas) { |
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569 geo_t *visit_geo; |
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570 int i; |
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571 |
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572 for(visit_geo = STAILQ_HEAD(rdman->all_geos); |
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573 visit_geo != NULL; |
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574 visit_geo = STAILQ_NEXT(geo_t, next, visit_geo)) { |
|
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A simple animation using rdman_redraw_changed().
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575 if(visit_geo->flags & GEF_DIRTY) |
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A simple animation using rdman_redraw_changed().
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576 clean_shape(visit_geo->shape); |
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577 for(i = 0; i < n_areas; i++) { |
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578 if(is_overlay(visit_geo->cur_area, areas[i])) { |
| 22 | 579 draw_shape(rdman, visit_geo->shape); |
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580 break; |
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581 } |
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582 } |
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583 } |
| 13 | 584 } |
| 585 | |
|
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586 |
| 13 | 587 /*! \brief Re-draw all changed shapes or shapes affected by changed coords. |
| 588 * | |
| 589 * A coord object has a geo to keep track the range that it's members will | |
| 590 * draw on. Geo of a coord should be recomputed when the coord is changed. | |
| 591 * Geo of a coord used to accelerate finding overlay shape objects of | |
| 592 * a specified geo. A coord object also must be recomputed when one of | |
| 593 * it's members is changed. | |
| 594 * | |
| 595 * New and old geo values of a coord object that is recomputed for | |
| 596 * changing of it-self must be used to find overlay shape objects. | |
| 597 * New and old geo values of a shape should also be used to find | |
| 598 * overlay shape objects, too. If a shape's coord is changed, shape's | |
| 599 * geo object is not used to find overlay shape objects any more. | |
| 600 * | |
| 601 * steps: | |
| 602 * - update chagned coord objects | |
| 14 | 603 * - recompute area for changed coord objects |
| 13 | 604 * - recompute geo for members shape objects |
| 14 | 605 * - clear dirty of geo for members to prevent from |
| 606 * recomputing for change of shape objects. | |
| 607 * - add old and new area value to list of dirty areas. | |
| 13 | 608 * - recompute geo for changed shape objects |
| 14 | 609 * - only if a shape object is dirty. |
| 610 * - put new and old value of area of geo to list of dirty areas. | |
| 611 * - Scan all shapes and redraw shapes overlaid with dirty areas. | |
| 13 | 612 * |
| 14 | 613 * dirty flag of coord objects is cleared after update. |
|
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614 * dirty flag of geo objects is also cleared after recomputing. |
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615 * Clean dirty flag can prevent redundant computing for geo and |
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616 * corod objects. |
| 14 | 617 * |
| 13 | 618 */ |
| 619 int rdman_redraw_changed(redraw_man_t *rdman) { | |
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620 int i, r; |
| 14 | 621 geo_t *visit_geo, **dirty_geos; |
| 622 int n_dirty_geos; | |
| 13 | 623 int n_dirty_areas; |
| 14 | 624 area_t **dirty_areas; |
| 13 | 625 |
|
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A simple animation using rdman_redraw_changed().
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626 r = clean_rdman_coords(rdman); |
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A simple animation using rdman_redraw_changed().
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627 if(r != OK) |
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A simple animation using rdman_redraw_changed().
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628 return ERR; |
| 13 | 629 |
| 14 | 630 n_dirty_geos = rdman->n_dirty_geos; |
| 631 if(n_dirty_geos > 0) { | |
| 632 dirty_geos = rdman->dirty_geos; | |
| 633 for(i = 0; i < n_dirty_geos; i++) { | |
| 634 visit_geo = dirty_geos[i]; | |
| 13 | 635 if(!(visit_geo->flags & GEF_DIRTY)) |
| 636 continue; | |
| 637 | |
| 638 SWAP(visit_geo->cur_area, visit_geo->last_area, area_t *); | |
|
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A simple animation using rdman_redraw_changed().
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639 clean_shape(visit_geo->shape); |
| 13 | 640 add_dirty_area(rdman, visit_geo->cur_area); |
| 641 add_dirty_area(rdman, visit_geo->last_area); | |
| 642 } | |
|
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643 rdman->n_dirty_geos = 0; |
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644 } |
| 13 | 645 |
|
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646 n_dirty_areas = rdman->n_dirty_areas; |
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647 dirty_areas = rdman->dirty_areas; |
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648 if(n_dirty_areas > 0) { |
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25
29937c26bb01
Fix bug of a dark line appear when animating.
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649 clean_canvas(rdman->cr); |
| 22 | 650 draw_shapes_in_areas(rdman, n_dirty_areas, dirty_areas); |
|
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651 copy_cr_2_backend(rdman, rdman->n_dirty_areas, rdman->dirty_areas); |
|
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652 rdman->n_dirty_areas = 0; |
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Unittest for rdman_redraw_changed().
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653 reset_clip(rdman); |
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654 } |
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655 rdman->n_dirty_areas = 0; |
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656 |
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657 return OK; |
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658 } |
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659 |
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660 int rdman_redraw_all(redraw_man_t *rdman) { |
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661 geo_t *geo; |
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662 |
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663 clean_rdman_coords(rdman); |
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664 rdman->n_dirty_areas = 0; |
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A simple animation using rdman_redraw_changed().
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665 |
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666 for(geo = STAILQ_HEAD(rdman->all_geos); |
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667 geo != NULL; |
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668 geo = STAILQ_NEXT(geo_t, next, geo)) { |
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669 if(geo->flags & GEF_DIRTY) |
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670 clean_shape(geo->shape); |
| 22 | 671 draw_shape(rdman, geo->shape); |
| 13 | 672 } |
|
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673 copy_cr_2_backend(rdman, 0, NULL); |
|
23
56f592f56ff7
Fix bug and add linear gradient paint.
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parents:
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674 rdman->n_dirty_geos = 0; |
| 13 | 675 |
| 676 return OK; | |
| 12 | 677 } |
| 678 | |
|
18
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679 shnode_t *shnode_new(redraw_man_t *rdman, shape_t *shape) { |
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680 shnode_t *node; |
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681 |
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682 node = (shnode_t *)elmpool_elm_alloc(rdman->shnode_pool); |
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683 if(node) { |
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684 node->shape = shape; |
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685 node->next = NULL; |
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686 } |
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687 return node; |
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688 } |
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689 |
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690 int rdman_paint_changed(redraw_man_t *rdman, paint_t *paint) { |
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0f3baa488a62
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691 shnode_t *node; |
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692 int r; |
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|
693 |
|
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694 for(node = STAILQ_HEAD(paint->members); |
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695 node != NULL; |
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696 node = STAILQ_NEXT(shnode_t, next, node)) { |
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697 r = _rdman_shape_changed(rdman, node->shape); |
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698 if(r != OK) |
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699 return ERR; |
|
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Support solid color paint for fill.
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|
700 } |
|
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701 return OK; |
|
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702 } |
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703 |
| 12 | 704 /* |
|
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705 * Dirty of geo |
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A simple animation using rdman_redraw_changed().
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706 * A geo is dirty when any of the shape, size or positions is changed. |
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707 * It's geo and positions should be recomputed before drawing. So, |
|
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
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708 * dirty geos are marked as dirty and put into dirty_geos list. |
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A simple animation using rdman_redraw_changed().
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709 * The list is inspected before drawing to make sure the right shape, |
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710 * size, and positions. |
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A simple animation using rdman_redraw_changed().
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711 * |
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A simple animation using rdman_redraw_changed().
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712 * Dirty of coord |
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A simple animation using rdman_redraw_changed().
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713 * A coord is dirty when it's transformation matrix being changed. |
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A simple animation using rdman_redraw_changed().
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714 * Dirty coords are marked as dirty and put into dirty_coords list. |
|
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A simple animation using rdman_redraw_changed().
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715 * Once a coord is dirty, every member geos of it are also dirty. |
|
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A simple animation using rdman_redraw_changed().
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716 * Because, their shape, size and positions will be changed. But, |
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e17e12b112c4
A simple animation using rdman_redraw_changed().
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717 * they are not marked as dirty and put into dirty_geos list, since |
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718 * all these member geos will be recomputed for computing new current |
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719 * area of the coord. The changes of a coord also affect child |
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720 * coords. Once parent is dirty, all children are also dirty for |
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721 * their aggregate matrix out of date. Dirty coords should be |
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A simple animation using rdman_redraw_changed().
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722 * clean in preorder of tree traversal. The dirty_coords list |
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723 * are sorted to keep the order before cleaning. |
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724 * Whenever a coord is marked dirty and put into dirty_coords list, |
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A simple animation using rdman_redraw_changed().
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725 * all it's children should also be marked and put. |
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726 * |
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727 * The procedure of clean coords comprises recomputing aggregate |
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728 * tranform matrix and area where members spreading in. |
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729 * |
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A simple animation using rdman_redraw_changed().
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730 * The list is inspected before drawing to recompute new shape, size, |
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731 * and positions of member geos of coords in the list. The drity |
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732 * flag of member geos will be clean. |
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733 * |
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734 * Clean coords should be performed before clean geos, since clean |
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735 * coords will also clean member geos. |
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736 */ |
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737 |
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738 /* |
| 12 | 739 * When redraw an area, the affected elements may also extend to |
| 740 * outside of the area. Since the order of drawing will change | |
| 741 * the result, it will infect more and more elements to keep | |
| 742 * drawing order althrough they are overlaid directly with | |
| 743 * specified area. | |
| 744 * | |
| 745 * To fix the problem, we don't extend the set of redrawing to | |
| 746 * elements they are not overliad directly. The redrawing is | |
| 747 * performed on a temporary surface, clipped to fit the area, and | |
| 748 * update only specified area on the destinate surface. | |
| 749 */ | |
| 750 | |
| 751 /* | |
| 752 * To accelerate speed of transformation, when a matrix changed, | |
| 753 * transformation should be aggregated and computed in a loop. | |
| 754 * It can get intereset of higher hit rate of cache. | |
| 755 * - shapes prvoide list of positions needed to be transformed. | |
| 756 * - redraw_man transforms positions from shapes. | |
| 757 * - shapes drawing with result of transforms. | |
| 758 * - shapes should be called to give them a chance to update geometries. | |
| 759 */ | |
| 760 | |
| 13 | 761 /* |
| 762 * functions: | |
| 763 * - redraw all | |
| 764 * - redraw changed | |
| 765 */ | |
| 766 | |
| 12 | 767 #ifdef UNITTEST |
| 768 | |
| 769 #include <CUnit/Basic.h> | |
| 19 | 770 #include "paint.h" |
| 12 | 771 |
| 772 struct _sh_dummy { | |
| 773 shape_t shape; | |
| 774 co_aix x, y; | |
| 775 co_aix w, h; | |
|
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776 int draw_cnt; |
| 12 | 777 }; |
| 778 | |
| 779 shape_t *sh_dummy_new(co_aix x, co_aix y, co_aix w, co_aix h) { | |
| 780 sh_dummy_t *dummy; | |
| 781 | |
| 782 dummy = (sh_dummy_t *)malloc(sizeof(sh_dummy_t)); | |
| 783 if(dummy == NULL) | |
| 784 return NULL; | |
| 785 | |
|
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786 memset(dummy, 0, sizeof(sh_dummy_t)); |
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787 |
| 12 | 788 dummy->x = x; |
| 789 dummy->y = y; | |
| 790 dummy->w = w; | |
| 791 dummy->h = h; | |
|
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792 dummy->draw_cnt = 0; |
| 12 | 793 |
| 794 return (shape_t *)dummy; | |
| 795 } | |
| 796 | |
| 797 void sh_dummy_free(shape_t *sh) { | |
| 798 free(sh); | |
| 799 } | |
| 800 | |
| 801 void sh_dummy_transform(shape_t *shape) { | |
| 802 sh_dummy_t *dummy = (sh_dummy_t *)shape; | |
| 803 co_aix poses[2][2]; | |
| 804 co_aix x1, y1, x2, y2; | |
| 805 | |
| 806 if(shape->geo && shape->coord) { | |
| 807 x1 = dummy->x; | |
| 808 y1 = dummy->y; | |
| 809 x2 = x1 + dummy->w; | |
| 810 y2 = y1 + dummy->h; | |
| 811 | |
| 812 coord_trans_pos(shape->coord, &x1, &y1); | |
| 813 coord_trans_pos(shape->coord, &x2, &y2); | |
| 814 poses[0][0] = x1; | |
| 815 poses[0][1] = y1; | |
| 816 poses[1][0] = x2; | |
| 817 poses[1][1] = y2; | |
| 818 | |
|
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819 if(shape->geo) |
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820 geo_from_positions(shape->geo, 2, poses); |
| 12 | 821 } |
| 822 } | |
| 823 | |
|
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824 void sh_dummy_fill(shape_t *shape, cairo_t *cr) { |
|
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825 sh_dummy_t *dummy; |
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826 |
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827 dummy = (sh_dummy_t *)shape; |
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828 dummy->draw_cnt++; |
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829 } |
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830 |
| 19 | 831 static void dummy_paint_prepare(paint_t *paint, cairo_t *cr) { |
| 832 } | |
| 833 | |
| 834 static void dummy_paint_free(paint_t *paint) { | |
| 835 if(paint) | |
| 836 free(paint); | |
| 837 } | |
| 838 | |
| 839 paint_t *dummy_paint_new(redraw_man_t *rdman) { | |
| 840 paint_t *paint; | |
| 841 | |
| 842 paint = (paint_t *)malloc(sizeof(paint_t)); | |
| 843 if(paint == NULL) | |
| 844 return NULL; | |
| 845 | |
| 846 paint_init(paint, dummy_paint_prepare, dummy_paint_free); | |
| 847 | |
| 848 return paint; | |
| 849 } | |
| 850 | |
| 12 | 851 void test_rdman_find_overlaid_shapes(void) { |
| 852 redraw_man_t rdman; | |
| 853 geo_t geo; | |
| 854 coord_t *coords[3]; | |
| 855 shape_t *shapes[5]; | |
| 856 geo_t **overlays; | |
| 13 | 857 co_aix pos[2][2]; |
| 12 | 858 int n; |
| 859 int i; | |
| 860 | |
|
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861 redraw_man_init(&rdman, NULL, NULL); |
| 12 | 862 coords[0] = rdman.root_coord; |
| 863 for(i = 1; i < 3; i++) { | |
| 864 coords[i] = rdman_coord_new(&rdman, rdman.root_coord); | |
| 865 } | |
| 866 for(i = 0; i < 5; i++) { | |
| 867 shapes[i] = sh_dummy_new(10 + i * 30, 10 + i * 20, 25, 15); | |
| 868 CU_ASSERT(shapes[i] != NULL); | |
| 869 } | |
| 870 for(i = 0; i < 3; i++) | |
| 871 rdman_add_shape(&rdman, shapes[i], coords[1]); | |
| 872 for(i = 3; i < 5; i++) | |
| 873 rdman_add_shape(&rdman, shapes[i], coords[2]); | |
| 874 | |
| 875 coords[1]->matrix[0] = 2; | |
| 876 coords[0]->matrix[4] = 2; | |
| 877 | |
| 878 update_aggr_matrix(coords[0]); | |
| 879 for(i = 0; i < 5; i++) | |
| 880 sh_dummy_transform(shapes[i]); | |
| 881 | |
| 13 | 882 pos[0][0] = 100; |
| 883 pos[0][1] = 120; | |
| 884 pos[1][0] = 100 + 140; | |
| 885 pos[1][1] = 120 + 40; | |
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886 geo_init(&geo); |
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887 geo_from_positions(&geo, 2, pos); |
| 12 | 888 |
| 889 n = rdman_find_overlaid_shapes(&rdman, &geo, &overlays); | |
| 890 CU_ASSERT(n == 2); | |
| 891 CU_ASSERT(overlays != NULL); | |
| 892 CU_ASSERT(overlays[0] == shapes[2]->geo); | |
| 893 CU_ASSERT(overlays[1] == shapes[3]->geo); | |
| 894 | |
| 895 free(overlays); | |
| 896 for(i = 0; i < 5; i++) | |
| 897 sh_dummy_free(shapes[i]); | |
| 898 | |
| 899 redraw_man_destroy(&rdman); | |
| 900 } | |
| 901 | |
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902 void test_rdman_redraw_changed(void) { |
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903 coord_t *coords[3]; |
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904 shape_t *shapes[3]; |
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905 sh_dummy_t **dummys; |
| 19 | 906 paint_t *paint; |
|
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907 redraw_man_t *rdman; |
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908 redraw_man_t _rdman; |
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909 int i; |
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910 |
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911 dummys = (sh_dummy_t **)shapes; |
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912 |
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913 rdman = &_rdman; |
|
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914 redraw_man_init(rdman, NULL, NULL); |
| 19 | 915 paint = dummy_paint_new(rdman); |
|
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916 for(i = 0; i < 3; i++) { |
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917 shapes[i] = sh_dummy_new(0, 0, 50, 50); |
| 19 | 918 rdman_paint_fill(rdman, paint, shapes[i]); |
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919 coords[i] = rdman_coord_new(rdman, rdman->root_coord); |
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920 coords[i]->matrix[2] = 10 + i * 100; |
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921 coords[i]->matrix[5] = 10 + i * 100; |
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922 rdman_coord_changed(rdman, coords[i]); |
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923 rdman_add_shape(rdman, shapes[i], coords[i]); |
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924 } |
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925 rdman_redraw_all(rdman); |
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926 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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927 CU_ASSERT(dummys[1]->draw_cnt == 1); |
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928 CU_ASSERT(dummys[2]->draw_cnt == 1); |
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929 |
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930 coords[2]->matrix[2] = 100; |
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931 coords[2]->matrix[5] = 100; |
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932 rdman_coord_changed(rdman, coords[2]); |
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933 rdman_redraw_changed(rdman); |
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934 |
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935 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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936 CU_ASSERT(dummys[1]->draw_cnt == 2); |
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937 CU_ASSERT(dummys[2]->draw_cnt == 2); |
| 19 | 938 |
| 939 paint->free(paint); | |
| 940 redraw_man_destroy(rdman); | |
|
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941 } |
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942 |
| 12 | 943 CU_pSuite get_redraw_man_suite(void) { |
| 944 CU_pSuite suite; | |
| 945 | |
| 946 suite = CU_add_suite("Suite_redraw_man", NULL, NULL); | |
| 947 CU_ADD_TEST(suite, test_rdman_find_overlaid_shapes); | |
|
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948 CU_ADD_TEST(suite, test_rdman_redraw_changed); |
| 12 | 949 |
| 950 return suite; | |
| 951 } | |
| 952 | |
| 953 #endif /* UNITTEST */ |