Mercurial > MadButterfly
annotate src/redraw_man.c @ 24:e598bc809c0f
No more flash when animation.
1. Add a buffer surface.
2. Draw on the surface
3. Copy content of buffer surface to XLib surface.
| author | Thinker K.F. Li <thinker@branda.to> |
|---|---|
| date | Sun, 03 Aug 2008 02:08:31 +0800 |
| parents | 56f592f56ff7 |
| children | 29937c26bb01 |
| 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 | |
| 10 #define OK 0 | |
| 11 #define ERR -1 | |
| 12 | |
| 13 | 13 #define OFFSET(type, field) ((void *)&((type *)NULL)->field - (void *)NULL) |
| 14 #define SWAP(a, b, t) do { t c; c = a; a = b; b = c; } while(0) | |
| 15 | |
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16 #ifdef UNITTEST |
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17 typedef struct _sh_dummy sh_dummy_t; |
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18 |
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19 extern void sh_dummy_transform(shape_t *shape); |
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20 extern void sh_dummy_fill(shape_t *, cairo_t *); |
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21 #endif /* UNITTEST */ |
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22 |
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23 /*! \brief Sort a list of element by a unsigned integer. |
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24 * |
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25 * The result is in ascend order. The unsigned integers is |
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26 * at offset specified by 'off' from start address of elemnts. |
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27 */ |
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28 static void _insert_sort(void **elms, int num, int off) { |
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29 int i, j; |
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30 unsigned int val; |
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31 |
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32 for(i = 1; i < num; i++) { |
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33 val = *(unsigned int *)(elms[i] + off); |
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34 for(j = i; j > 0; j--) { |
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35 if(*(unsigned int *)(elms[j - 1] + off) <= val) |
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36 break; |
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37 elms[j] = elms[j - 1]; |
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38 } |
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39 elms[j] = elms[i]; |
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40 } |
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41 } |
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42 |
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43 static int extend_memblk(void **buf, int o_size, int n_size) { |
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44 void *new_buf; |
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45 |
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46 new_buf = realloc(*buf, n_size); |
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47 if(new_buf == NULL) |
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48 return ERR; |
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49 |
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50 if(new_buf != *buf) |
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51 *buf = new_buf; |
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52 |
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53 return OK; |
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54 } |
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55 |
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56 static int add_dirty_geo(redraw_man_t *rdman, geo_t *geo) { |
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57 int max_dirty_geos; |
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58 int r; |
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59 |
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60 if(rdman->n_dirty_geos >= rdman->max_dirty_geos) { |
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61 max_dirty_geos = rdman->n_geos; |
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62 r = extend_memblk((void **)&rdman->dirty_geos, |
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63 sizeof(geo_t *) * rdman->n_dirty_geos, |
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64 sizeof(geo_t *) * max_dirty_geos); |
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65 if(r != OK) |
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66 return ERR; |
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67 rdman->max_dirty_geos = max_dirty_geos; |
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68 } |
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69 |
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70 rdman->dirty_geos[rdman->n_dirty_geos++] = geo; |
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71 return OK; |
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72 } |
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73 |
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74 static int add_dirty_area(redraw_man_t *rdman, area_t *area) { |
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75 int max_dirty_areas; |
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76 int r; |
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77 |
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78 if(rdman->n_dirty_areas >= rdman->max_dirty_areas) { |
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79 /* every geo object and coord object can contribute 2 areas. */ |
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80 max_dirty_areas = (rdman->n_geos + rdman->n_coords) * 2; |
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81 r = extend_memblk((void **)&rdman->dirty_areas, |
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82 sizeof(area_t *) * rdman->n_dirty_areas, |
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83 sizeof(area_t *) * max_dirty_areas); |
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84 if(r != OK) |
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85 return ERR; |
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86 rdman->max_dirty_areas = max_dirty_areas; |
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87 } |
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88 |
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89 rdman->dirty_areas[rdman->n_dirty_areas++] = area; |
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90 return OK; |
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91 } |
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92 |
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93 static void clean_shape(shape_t *shape) { |
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94 switch(shape->sh_type) { |
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95 case SHT_PATH: |
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96 sh_path_transform(shape); |
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97 break; |
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98 #ifdef UNITTEST |
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99 default: |
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100 sh_dummy_transform(shape); |
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101 break; |
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102 #endif /* UNITTEST */ |
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103 } |
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104 shape->geo->flags &= ~GEF_DIRTY; |
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105 } |
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106 |
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107 static void area_to_positions(area_t *area, co_aix (*poses)[2]) { |
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108 poses[0][0] = area->x; |
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109 poses[0][1] = area->y; |
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110 poses[1][0] = area->x + area->w; |
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111 poses[1][1] = area->y + area->h;; |
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112 } |
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113 |
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114 static int clean_coord(coord_t *coord) { |
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115 shape_t *shape; |
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116 geo_t *geo; |
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117 co_aix (*poses)[2]; |
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118 int cnt, pos_cnt; |
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119 |
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120 compute_aggr_of_coord(coord); |
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121 |
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122 /* Clean member shapes. */ |
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123 cnt = 0; |
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124 for(shape = STAILQ_HEAD(coord->members); |
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125 shape != NULL; |
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126 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { |
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127 geo = shape->geo; |
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128 SWAP(geo->cur_area, geo->last_area, area_t *); |
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129 clean_shape(shape); |
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130 cnt++; |
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131 } |
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132 |
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133 /* Compute area of the coord. */ |
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134 poses = (co_aix (*)[2])malloc(sizeof(co_aix [2]) * 2 * cnt); |
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135 if(poses == NULL) |
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136 return ERR; |
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137 |
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138 pos_cnt = 0; |
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139 for(shape = STAILQ_HEAD(coord->members); |
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140 shape != NULL; |
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141 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { |
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142 geo = shape->geo; |
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143 |
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144 area_to_positions(geo->cur_area, poses + pos_cnt); |
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145 pos_cnt += 2; |
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146 } |
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147 |
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148 SWAP(coord->cur_area, coord->last_area, area_t *); |
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149 area_init(coord->cur_area, pos_cnt, poses); |
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150 free(poses); |
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151 |
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152 coord->flags &= ~COF_DIRTY; |
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153 |
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154 return OK; |
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155 } |
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156 |
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157 static int clean_rdman_coords(redraw_man_t *rdman) { |
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158 coord_t *coord; |
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159 coord_t **dirty_coords; |
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160 int n_dirty_coords; |
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161 int i, r; |
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162 |
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163 n_dirty_coords = rdman->n_dirty_coords; |
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164 if(n_dirty_coords > 0) { |
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165 dirty_coords = rdman->dirty_coords; |
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166 _insert_sort((void **)dirty_coords, n_dirty_coords, |
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167 OFFSET(coord_t, order)); |
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168 for(i = 0; i < n_dirty_coords; i++) { |
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169 coord = dirty_coords[i]; |
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170 if(!(coord->flags & COF_DIRTY)) |
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171 continue; |
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172 r = clean_coord(coord); |
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173 if(r != OK) |
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174 return ERR; |
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175 /* These two steps can be avoided for drawing all. */ |
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176 add_dirty_area(rdman, &coord->areas[0]); |
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177 add_dirty_area(rdman, &coord->areas[1]); |
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178 } |
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179 rdman->n_dirty_coords = 0; |
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180 } |
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181 return OK; |
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182 } |
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183 |
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184 int redraw_man_init(redraw_man_t *rdman, cairo_t *cr, cairo_t *backend) { |
| 12 | 185 extern void redraw_man_destroy(redraw_man_t *rdman); |
| 186 | |
| 187 memset(rdman, 0, sizeof(redraw_man_t)); | |
| 188 | |
| 189 rdman->geo_pool = elmpool_new(sizeof(geo_t), 128); | |
| 190 if(rdman->geo_pool == NULL) | |
| 191 return ERR; | |
| 192 | |
| 193 rdman->coord_pool = elmpool_new(sizeof(coord_t), 16); | |
| 194 if(rdman->coord_pool == NULL) { | |
| 195 elmpool_free(rdman->geo_pool); | |
| 196 return ERR; | |
| 197 } | |
| 198 | |
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199 rdman->shnode_pool = elmpool_new(sizeof(shnode_t), 16); |
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200 if(rdman->shnode_pool == NULL) { |
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201 elmpool_free(rdman->geo_pool); |
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202 elmpool_free(rdman->coord_pool); |
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203 return ERR; |
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204 } |
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205 |
| 12 | 206 rdman->root_coord = elmpool_elm_alloc(rdman->coord_pool); |
| 207 if(rdman->root_coord == NULL) | |
| 208 redraw_man_destroy(rdman); | |
| 13 | 209 rdman->n_coords = 1; |
| 12 | 210 coord_init(rdman->root_coord, NULL); |
| 211 | |
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212 rdman->cr = cr; |
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213 rdman->backend = backend; |
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214 |
| 12 | 215 return OK; |
| 216 } | |
| 217 | |
| 218 void redraw_man_destroy(redraw_man_t *rdman) { | |
| 219 elmpool_free(rdman->coord_pool); | |
| 220 elmpool_free(rdman->geo_pool); | |
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221 elmpool_free(rdman->shnode_pool); |
| 13 | 222 if(rdman->dirty_coords) |
| 223 free(rdman->dirty_coords); | |
| 14 | 224 if(rdman->dirty_geos) |
| 225 free(rdman->dirty_geos); | |
| 12 | 226 } |
| 227 | |
| 228 | |
| 229 #define ASSERT(x) | |
| 230 /* | |
| 231 * Change transformation matrix | |
| 232 * - update aggregated transformation matrix | |
| 233 * - of coord_t object been changed. | |
| 234 * - of children coord_t objects. | |
| 235 * - redraw members of coord_t objects. | |
| 236 * - redraw shape objects they are overlaid with members. | |
| 237 * - find out overlaid shape objects. | |
| 238 * - geo_t of a coord_t object | |
| 239 * - can make finding more efficiency. | |
| 240 * - fill overlay geo_t objects of members. | |
| 241 * | |
| 242 * Change a shape object | |
| 243 * - redraw changed object. | |
| 244 * - redraw shape objects they are overlaid with changed object. | |
| 245 * - find out overlaid shape objects. | |
| 246 * | |
| 247 * That coord and geo of shape objects are setted by user code | |
| 248 * give user code a chance to collect coord and geo objects together | |
| 249 * and gain interest of higher cache hit rate. | |
| 250 */ | |
| 251 | |
| 252 /*! \brief Find out all affected shape objects. | |
| 253 * | |
| 254 * Find out all shape objects that are overalid with geo_t of | |
| 255 * a geometry changed object. | |
| 256 * | |
| 257 * Linear scan geo_t objects of all shape objects in all_shapes | |
| 258 * list of a redraw_man_t object. | |
| 259 */ | |
| 260 int rdman_find_overlaid_shapes(redraw_man_t *rdman, geo_t *geo, | |
| 261 geo_t ***overlays) { | |
| 262 int n_geos; | |
| 263 geo_t **geos; | |
| 264 geo_t *geo_cur; | |
| 265 int n_overlays; | |
| 266 geo_t **_overlays; | |
| 267 int i; | |
| 268 | |
| 269 n_geos = rdman->n_geos; | |
| 270 | |
| 271 geos = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
| 272 if(geos == NULL) | |
| 273 return -1; | |
| 274 | |
| 275 _overlays = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
| 276 if(geos == NULL) { | |
| 277 free(geos); | |
| 278 return -1; | |
| 279 } | |
| 280 | |
| 281 geo_cur = STAILQ_HEAD(rdman->all_geos); | |
| 282 for(i = 0; i < n_geos; i++) { | |
| 283 geos[i] = geo_cur; | |
| 284 geo_cur = STAILQ_NEXT(geo_t, next, geo_cur); | |
| 285 } | |
| 286 geo_mark_overlay(geo, n_geos, geos, &n_overlays, _overlays); | |
| 287 | |
| 288 free(geos); | |
| 289 *overlays = _overlays; | |
| 290 | |
| 291 return n_overlays; | |
| 292 } | |
| 293 | |
| 294 int rdman_add_shape(redraw_man_t *rdman, shape_t *shape, coord_t *coord) { | |
| 295 geo_t *geo; | |
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296 #ifdef GEO_ORDER |
| 13 | 297 geo_t *visit; |
| 298 unsigned int next_order; | |
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299 #endif |
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300 int r; |
| 12 | 301 |
| 302 geo = elmpool_elm_alloc(rdman->geo_pool); | |
| 303 if(geo == NULL) | |
| 304 return ERR; | |
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305 |
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306 geo_init(geo); |
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307 |
| 12 | 308 sh_attach_geo(shape, geo); |
| 309 STAILQ_INS_TAIL(rdman->all_geos, geo_t, next, geo); | |
| 310 rdman->n_geos++; | |
| 13 | 311 |
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312 #ifdef GEO_ORDER |
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313 /* TODO: remove order number. */ |
| 13 | 314 geo->order = ++rdman->next_geo_order; |
| 315 if(geo->order == 0) { | |
| 316 next_order = 0; | |
| 317 for(visit = STAILQ_HEAD(rdman->all_geos); | |
| 318 visit != NULL; | |
| 319 visit = STAILQ_NEXT(geo_t, next, visit)) | |
| 320 visit->order = ++next_order; | |
| 321 rdman->next_geo_order = next_order; | |
| 322 } | |
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323 #endif |
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324 |
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325 /* New one should be dirty to recompute it when drawing. */ |
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326 geo->flags |= GEF_DIRTY; |
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327 r = add_dirty_geo(rdman, geo); |
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328 if(r != OK) |
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329 return ERR; |
| 13 | 330 |
| 12 | 331 sh_attach_coord(shape, coord); |
| 332 | |
| 333 return OK; | |
| 334 } | |
| 335 | |
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336 /*! \brief Remove a shape object from redraw manager. |
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337 * |
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338 * TODO: redraw shape objects that overlaid with removed one. |
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339 */ |
| 12 | 340 int rdman_remove_shape(redraw_man_t *rdman, shape_t *shape) { |
| 341 STAILQ_REMOVE(rdman->all_geos, geo_t, next, shape->geo); | |
| 342 elmpool_elm_free(rdman->geo_pool, shape->geo); | |
| 343 sh_detach_geo(shape); | |
| 344 rdman->n_geos--; | |
| 345 sh_detach_coord(shape); | |
| 346 return OK; | |
| 347 } | |
| 348 | |
| 349 coord_t *rdman_coord_new(redraw_man_t *rdman, coord_t *parent) { | |
| 13 | 350 coord_t *coord, *root_coord; |
| 351 coord_t *visit; | |
| 12 | 352 |
| 353 coord = elmpool_elm_alloc(rdman->coord_pool); | |
| 354 if(coord == NULL) | |
| 355 return NULL; | |
| 356 | |
| 357 coord_init(coord, parent); | |
| 13 | 358 rdman->n_coords++; |
| 359 | |
| 360 coord->order = ++rdman->next_coord_order; | |
| 361 if(coord->order == 0) { | |
| 362 rdman->next_coord_order = 0; | |
| 363 root_coord = visit = rdman->root_coord; | |
| 364 /* skip root coord. */ | |
| 365 visit = preorder_coord_subtree(root_coord, visit); | |
| 366 while(visit) { | |
| 367 visit->order = ++rdman->next_coord_order; | |
| 368 visit = preorder_coord_subtree(root_coord, visit); | |
| 369 } | |
| 370 } | |
| 12 | 371 |
| 372 return coord; | |
| 373 } | |
| 374 | |
| 375 /*! \brief Free a coord of a redraw_man_t object. | |
| 376 * | |
| 377 * \param coord is a coord_t without children and members. | |
| 378 * \return 0 for successful, -1 for error. | |
| 379 */ | |
| 380 int rdman_coord_free(redraw_man_t *rdman, coord_t *coord) { | |
| 381 coord_t *parent; | |
| 382 | |
| 383 parent = coord->parent; | |
| 384 if(parent == NULL) | |
| 385 return ERR; | |
| 386 | |
| 387 if(STAILQ_HEAD(coord->members) != NULL) | |
| 388 return ERR; | |
| 389 | |
| 390 if(STAILQ_HEAD(coord->children) != NULL) | |
| 391 return ERR; | |
| 392 | |
| 393 STAILQ_REMOVE(parent->children, coord_t, sibling, coord); | |
| 394 elmpool_elm_free(rdman->coord_pool, coord); | |
| 13 | 395 rdman->n_coords--; |
| 396 | |
| 397 return OK; | |
| 398 } | |
| 399 | |
| 400 /*! \brief Mark a coord is changed. | |
| 401 * | |
| 402 * A changed coord_t object is marked as dirty and put | |
| 403 * into dirty_coords list. | |
| 404 */ | |
| 405 int rdman_coord_changed(redraw_man_t *rdman, coord_t *coord) { | |
|
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406 coord_t *child; |
| 13 | 407 int max_dirty_coords; |
| 408 int r; | |
| 409 | |
| 410 if(coord->flags & COF_DIRTY) | |
| 411 return OK; | |
| 412 | |
| 413 if(rdman->n_dirty_coords >= rdman->max_dirty_coords) { | |
| 414 /* Max of dirty_coords is not big enough. */ | |
| 415 max_dirty_coords = rdman->max_dirty_coords + 16; | |
| 416 | |
| 417 r = extend_memblk((void **)&rdman->dirty_coords, | |
| 418 sizeof(coord_t *) * rdman->n_dirty_coords, | |
| 419 sizeof(coord_t *) * max_dirty_coords); | |
| 420 rdman->max_dirty_coords = max_dirty_coords; | |
| 421 } | |
| 422 | |
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423 /* Make the coord and child coords dirty. */ |
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424 for(child = coord; |
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425 child != NULL; |
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426 child = preorder_coord_subtree(coord, child)) { |
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427 rdman->dirty_coords[rdman->n_dirty_coords++] = coord; |
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428 coord->flags |= COF_DIRTY; |
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429 } |
| 13 | 430 |
| 431 return OK; | |
| 432 } | |
| 433 | |
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434 static int _rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
| 13 | 435 geo_t *geo; |
| 436 int r; | |
| 437 | |
| 438 geo = shape->geo; | |
| 439 | |
| 440 if(geo->flags & GEF_DIRTY) | |
| 441 return OK; | |
| 442 | |
| 443 r = add_dirty_geo(rdman, geo); | |
| 444 if(r == ERR) | |
| 445 return ERR; | |
| 446 geo->flags |= GEF_DIRTY; | |
| 12 | 447 |
| 448 return OK; | |
| 449 } | |
| 450 | |
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451 /*! \brief Mark a shape is changed. |
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452 * |
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453 * The geo_t object of a changed shape is mark as dirty and |
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454 * put into dirty_geos list. |
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455 */ |
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456 int rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
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457 return _rdman_shape_changed(rdman, shape); |
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458 } |
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459 |
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460 /* Drawing and Redrawing |
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461 * ============================================================ |
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462 */ |
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463 |
| 22 | 464 static void draw_shape(redraw_man_t *rdman, shape_t *shape) { |
| 465 paint_t *fill, *stroke; | |
|
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466 |
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467 fill = shape->fill; |
| 19 | 468 if(fill) { |
|
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469 fill->prepare(fill, rdman->cr); |
| 19 | 470 switch(shape->sh_type) { |
| 471 case SHT_PATH: | |
|
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472 sh_path_fill(shape, rdman->cr); |
| 19 | 473 break; |
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474 #ifdef UNITTEST |
| 19 | 475 default: |
|
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476 sh_dummy_fill(shape, rdman->cr); |
| 19 | 477 break; |
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478 #endif /* UNITTEST */ |
| 19 | 479 } |
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480 } |
| 22 | 481 stroke = shape->stroke; |
| 482 if(stroke) { | |
| 483 stroke->prepare(stroke, rdman->cr); | |
| 484 switch(shape->sh_type) { | |
| 485 case SHT_PATH: | |
| 486 sh_path_stroke(shape, rdman->cr); | |
| 487 break; | |
| 488 #ifdef UNITTEST | |
| 489 default: | |
| 490 /* sh_dummy_fill(shape, rdman->cr); */ | |
| 491 break; | |
| 492 #endif /* UNITTEST */ | |
| 493 } | |
| 494 } | |
| 13 | 495 } |
| 496 | |
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497 #ifndef UNITTEST |
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498 static void clean_clip(cairo_t *cr) { |
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499 cairo_pattern_t *pt; |
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500 |
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501 pt = cairo_get_source(cr); |
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502 cairo_pattern_reference(pt); |
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503 /* TODO: clean to background color. */ |
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504 cairo_set_source_rgb(cr, 0, 0, 0); |
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505 cairo_paint(cr); |
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506 cairo_set_source(cr, pt); |
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507 cairo_pattern_destroy(pt); |
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508 } |
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509 |
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510 static void make_clip(cairo_t *cr, int n_dirty_areas, |
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511 area_t **dirty_areas) { |
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512 int i; |
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513 area_t *area; |
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514 |
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515 for(i = 0; i < n_dirty_areas; i++) { |
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516 area = dirty_areas[i]; |
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517 cairo_rectangle(cr, area->x, area->y, area->w, area->h); |
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518 } |
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519 cairo_clip(cr); |
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520 } |
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521 |
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522 static void reset_clip(redraw_man_t *rdman) { |
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523 cairo_reset_clip(rdman->cr); |
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524 cairo_reset_clip(rdman->backend); |
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525 } |
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526 |
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527 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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528 area_t **dirty_areas) { |
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529 if(n_dirty_areas) |
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530 make_clip(rdman->backend, n_dirty_areas, dirty_areas); |
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531 |
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532 cairo_paint(rdman->backend); |
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533 } |
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534 #else /* UNITTEST */ |
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535 static void clean_clip(cairo_t *cr) { |
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536 } |
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537 |
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538 static void make_clip(cairo_t *cr, int n_dirty_areas, |
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539 area_t **dirty_areas) { |
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540 } |
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541 |
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542 static void reset_clip(redraw_man_t *rdman) { |
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543 } |
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544 |
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545 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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546 area_t **dirty_areas) { |
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547 } |
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548 #endif /* UNITTEST */ |
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549 |
| 22 | 550 static void draw_shapes_in_areas(redraw_man_t *rdman, |
|
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551 int n_areas, |
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552 area_t **areas) { |
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553 geo_t *visit_geo; |
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554 int i; |
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555 |
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556 for(visit_geo = STAILQ_HEAD(rdman->all_geos); |
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557 visit_geo != NULL; |
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558 visit_geo = STAILQ_NEXT(geo_t, next, visit_geo)) { |
|
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A simple animation using rdman_redraw_changed().
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559 if(visit_geo->flags & GEF_DIRTY) |
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A simple animation using rdman_redraw_changed().
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560 clean_shape(visit_geo->shape); |
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561 for(i = 0; i < n_areas; i++) { |
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562 if(is_overlay(visit_geo->cur_area, areas[i])) { |
| 22 | 563 draw_shape(rdman, visit_geo->shape); |
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564 break; |
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565 } |
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566 } |
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567 } |
| 13 | 568 } |
| 569 | |
|
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570 |
| 13 | 571 /*! \brief Re-draw all changed shapes or shapes affected by changed coords. |
| 572 * | |
| 573 * A coord object has a geo to keep track the range that it's members will | |
| 574 * draw on. Geo of a coord should be recomputed when the coord is changed. | |
| 575 * Geo of a coord used to accelerate finding overlay shape objects of | |
| 576 * a specified geo. A coord object also must be recomputed when one of | |
| 577 * it's members is changed. | |
| 578 * | |
| 579 * New and old geo values of a coord object that is recomputed for | |
| 580 * changing of it-self must be used to find overlay shape objects. | |
| 581 * New and old geo values of a shape should also be used to find | |
| 582 * overlay shape objects, too. If a shape's coord is changed, shape's | |
| 583 * geo object is not used to find overlay shape objects any more. | |
| 584 * | |
| 585 * steps: | |
| 586 * - update chagned coord objects | |
| 14 | 587 * - recompute area for changed coord objects |
| 13 | 588 * - recompute geo for members shape objects |
| 14 | 589 * - clear dirty of geo for members to prevent from |
| 590 * recomputing for change of shape objects. | |
| 591 * - add old and new area value to list of dirty areas. | |
| 13 | 592 * - recompute geo for changed shape objects |
| 14 | 593 * - only if a shape object is dirty. |
| 594 * - put new and old value of area of geo to list of dirty areas. | |
| 595 * - Scan all shapes and redraw shapes overlaid with dirty areas. | |
| 13 | 596 * |
| 14 | 597 * dirty flag of coord objects is cleared after update. |
|
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598 * dirty flag of geo objects is also cleared after recomputing. |
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599 * Clean dirty flag can prevent redundant computing for geo and |
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600 * corod objects. |
| 14 | 601 * |
| 13 | 602 */ |
| 603 int rdman_redraw_changed(redraw_man_t *rdman) { | |
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604 int i, r; |
| 14 | 605 geo_t *visit_geo, **dirty_geos; |
| 606 int n_dirty_geos; | |
| 13 | 607 int n_dirty_areas; |
| 14 | 608 area_t **dirty_areas; |
| 13 | 609 |
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610 r = clean_rdman_coords(rdman); |
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611 if(r != OK) |
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A simple animation using rdman_redraw_changed().
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612 return ERR; |
| 13 | 613 |
| 14 | 614 n_dirty_geos = rdman->n_dirty_geos; |
| 615 if(n_dirty_geos > 0) { | |
| 616 dirty_geos = rdman->dirty_geos; | |
| 617 for(i = 0; i < n_dirty_geos; i++) { | |
| 618 visit_geo = dirty_geos[i]; | |
| 13 | 619 if(!(visit_geo->flags & GEF_DIRTY)) |
| 620 continue; | |
| 621 | |
| 622 SWAP(visit_geo->cur_area, visit_geo->last_area, area_t *); | |
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623 clean_shape(visit_geo->shape); |
| 13 | 624 add_dirty_area(rdman, visit_geo->cur_area); |
| 625 add_dirty_area(rdman, visit_geo->last_area); | |
| 626 } | |
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627 rdman->n_dirty_geos = 0; |
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628 } |
| 13 | 629 |
|
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630 n_dirty_areas = rdman->n_dirty_areas; |
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631 dirty_areas = rdman->dirty_areas; |
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632 if(n_dirty_areas > 0) { |
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633 make_clip(rdman->cr, n_dirty_areas, dirty_areas); |
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634 clean_clip(rdman->cr); |
| 22 | 635 draw_shapes_in_areas(rdman, n_dirty_areas, dirty_areas); |
|
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636 copy_cr_2_backend(rdman, rdman->n_dirty_areas, rdman->dirty_areas); |
|
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637 rdman->n_dirty_areas = 0; |
|
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Unittest for rdman_redraw_changed().
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638 reset_clip(rdman); |
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639 } |
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640 rdman->n_dirty_areas = 0; |
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641 |
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642 return OK; |
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643 } |
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644 |
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645 int rdman_redraw_all(redraw_man_t *rdman) { |
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646 geo_t *geo; |
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647 |
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648 clean_rdman_coords(rdman); |
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649 rdman->n_dirty_areas = 0; |
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650 |
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651 for(geo = STAILQ_HEAD(rdman->all_geos); |
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652 geo != NULL; |
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653 geo = STAILQ_NEXT(geo_t, next, geo)) { |
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654 if(geo->flags & GEF_DIRTY) |
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655 clean_shape(geo->shape); |
| 22 | 656 draw_shape(rdman, geo->shape); |
| 13 | 657 } |
|
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658 copy_cr_2_backend(rdman, 0, NULL); |
|
23
56f592f56ff7
Fix bug and add linear gradient paint.
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659 rdman->n_dirty_geos = 0; |
| 13 | 660 |
| 661 return OK; | |
| 12 | 662 } |
| 663 | |
|
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664 shnode_t *shnode_new(redraw_man_t *rdman, shape_t *shape) { |
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0f3baa488a62
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665 shnode_t *node; |
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Support solid color paint for fill.
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666 |
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667 node = (shnode_t *)elmpool_elm_alloc(rdman->shnode_pool); |
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668 if(node) { |
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669 node->shape = shape; |
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670 node->next = NULL; |
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671 } |
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672 return node; |
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Support solid color paint for fill.
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673 } |
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674 |
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675 int rdman_paint_changed(redraw_man_t *rdman, paint_t *paint) { |
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0f3baa488a62
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676 shnode_t *node; |
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677 int r; |
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|
678 |
|
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679 for(node = STAILQ_HEAD(paint->members); |
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680 node != NULL; |
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Support solid color paint for fill.
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681 node = STAILQ_NEXT(shnode_t, next, node)) { |
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682 r = _rdman_shape_changed(rdman, node->shape); |
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683 if(r != OK) |
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684 return ERR; |
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Support solid color paint for fill.
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685 } |
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|
686 return OK; |
|
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Support solid color paint for fill.
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687 } |
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688 |
| 12 | 689 /* |
|
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690 * Dirty of geo |
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A simple animation using rdman_redraw_changed().
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691 * A geo is dirty when any of the shape, size or positions is changed. |
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A simple animation using rdman_redraw_changed().
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parents:
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692 * It's geo and positions should be recomputed before drawing. So, |
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e17e12b112c4
A simple animation using rdman_redraw_changed().
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693 * 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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694 * The list is inspected before drawing to make sure the right shape, |
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A simple animation using rdman_redraw_changed().
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695 * size, and positions. |
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A simple animation using rdman_redraw_changed().
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696 * |
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A simple animation using rdman_redraw_changed().
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697 * Dirty of coord |
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A simple animation using rdman_redraw_changed().
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698 * 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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699 * 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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700 * 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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701 * Because, their shape, size and positions will be changed. But, |
|
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A simple animation using rdman_redraw_changed().
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702 * they are not marked as dirty and put into dirty_geos list, since |
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A simple animation using rdman_redraw_changed().
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703 * all these member geos will be recomputed for computing new current |
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e17e12b112c4
A simple animation using rdman_redraw_changed().
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704 * area of the coord. The changes of a coord also affect child |
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e17e12b112c4
A simple animation using rdman_redraw_changed().
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705 * coords. Once parent is dirty, all children are also dirty for |
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A simple animation using rdman_redraw_changed().
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706 * their aggregate matrix out of date. Dirty coords should be |
|
e17e12b112c4
A simple animation using rdman_redraw_changed().
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parents:
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707 * clean in preorder of tree traversal. The dirty_coords list |
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e17e12b112c4
A simple animation using rdman_redraw_changed().
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708 * are sorted to keep the order before cleaning. |
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709 * Whenever a coord is marked dirty and put into dirty_coords list, |
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710 * all it's children should also be marked and put. |
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711 * |
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712 * The procedure of clean coords comprises recomputing aggregate |
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713 * tranform matrix and area where members spreading in. |
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714 * |
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715 * The list is inspected before drawing to recompute new shape, size, |
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716 * and positions of member geos of coords in the list. The drity |
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717 * flag of member geos will be clean. |
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718 * |
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719 * Clean coords should be performed before clean geos, since clean |
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720 * coords will also clean member geos. |
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A simple animation using rdman_redraw_changed().
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721 */ |
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722 |
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A simple animation using rdman_redraw_changed().
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723 /* |
| 12 | 724 * When redraw an area, the affected elements may also extend to |
| 725 * outside of the area. Since the order of drawing will change | |
| 726 * the result, it will infect more and more elements to keep | |
| 727 * drawing order althrough they are overlaid directly with | |
| 728 * specified area. | |
| 729 * | |
| 730 * To fix the problem, we don't extend the set of redrawing to | |
| 731 * elements they are not overliad directly. The redrawing is | |
| 732 * performed on a temporary surface, clipped to fit the area, and | |
| 733 * update only specified area on the destinate surface. | |
| 734 */ | |
| 735 | |
| 736 /* | |
| 737 * To accelerate speed of transformation, when a matrix changed, | |
| 738 * transformation should be aggregated and computed in a loop. | |
| 739 * It can get intereset of higher hit rate of cache. | |
| 740 * - shapes prvoide list of positions needed to be transformed. | |
| 741 * - redraw_man transforms positions from shapes. | |
| 742 * - shapes drawing with result of transforms. | |
| 743 * - shapes should be called to give them a chance to update geometries. | |
| 744 */ | |
| 745 | |
| 13 | 746 /* |
| 747 * functions: | |
| 748 * - redraw all | |
| 749 * - redraw changed | |
| 750 */ | |
| 751 | |
| 12 | 752 #ifdef UNITTEST |
| 753 | |
| 754 #include <CUnit/Basic.h> | |
| 19 | 755 #include "paint.h" |
| 12 | 756 |
| 757 struct _sh_dummy { | |
| 758 shape_t shape; | |
| 759 co_aix x, y; | |
| 760 co_aix w, h; | |
|
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761 int draw_cnt; |
| 12 | 762 }; |
| 763 | |
| 764 shape_t *sh_dummy_new(co_aix x, co_aix y, co_aix w, co_aix h) { | |
| 765 sh_dummy_t *dummy; | |
| 766 | |
| 767 dummy = (sh_dummy_t *)malloc(sizeof(sh_dummy_t)); | |
| 768 if(dummy == NULL) | |
| 769 return NULL; | |
| 770 | |
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771 memset(dummy, 0, sizeof(sh_dummy_t)); |
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772 |
| 12 | 773 dummy->x = x; |
| 774 dummy->y = y; | |
| 775 dummy->w = w; | |
| 776 dummy->h = h; | |
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777 dummy->draw_cnt = 0; |
| 12 | 778 |
| 779 return (shape_t *)dummy; | |
| 780 } | |
| 781 | |
| 782 void sh_dummy_free(shape_t *sh) { | |
| 783 free(sh); | |
| 784 } | |
| 785 | |
| 786 void sh_dummy_transform(shape_t *shape) { | |
| 787 sh_dummy_t *dummy = (sh_dummy_t *)shape; | |
| 788 co_aix poses[2][2]; | |
| 789 co_aix x1, y1, x2, y2; | |
| 790 | |
| 791 if(shape->geo && shape->coord) { | |
| 792 x1 = dummy->x; | |
| 793 y1 = dummy->y; | |
| 794 x2 = x1 + dummy->w; | |
| 795 y2 = y1 + dummy->h; | |
| 796 | |
| 797 coord_trans_pos(shape->coord, &x1, &y1); | |
| 798 coord_trans_pos(shape->coord, &x2, &y2); | |
| 799 poses[0][0] = x1; | |
| 800 poses[0][1] = y1; | |
| 801 poses[1][0] = x2; | |
| 802 poses[1][1] = y2; | |
| 803 | |
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804 if(shape->geo) |
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805 geo_from_positions(shape->geo, 2, poses); |
| 12 | 806 } |
| 807 } | |
| 808 | |
|
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809 void sh_dummy_fill(shape_t *shape, cairo_t *cr) { |
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810 sh_dummy_t *dummy; |
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811 |
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812 dummy = (sh_dummy_t *)shape; |
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813 dummy->draw_cnt++; |
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814 } |
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815 |
| 19 | 816 static void dummy_paint_prepare(paint_t *paint, cairo_t *cr) { |
| 817 } | |
| 818 | |
| 819 static void dummy_paint_free(paint_t *paint) { | |
| 820 if(paint) | |
| 821 free(paint); | |
| 822 } | |
| 823 | |
| 824 paint_t *dummy_paint_new(redraw_man_t *rdman) { | |
| 825 paint_t *paint; | |
| 826 | |
| 827 paint = (paint_t *)malloc(sizeof(paint_t)); | |
| 828 if(paint == NULL) | |
| 829 return NULL; | |
| 830 | |
| 831 paint_init(paint, dummy_paint_prepare, dummy_paint_free); | |
| 832 | |
| 833 return paint; | |
| 834 } | |
| 835 | |
| 12 | 836 void test_rdman_find_overlaid_shapes(void) { |
| 837 redraw_man_t rdman; | |
| 838 geo_t geo; | |
| 839 coord_t *coords[3]; | |
| 840 shape_t *shapes[5]; | |
| 841 geo_t **overlays; | |
| 13 | 842 co_aix pos[2][2]; |
| 12 | 843 int n; |
| 844 int i; | |
| 845 | |
|
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846 redraw_man_init(&rdman, NULL, NULL); |
| 12 | 847 coords[0] = rdman.root_coord; |
| 848 for(i = 1; i < 3; i++) { | |
| 849 coords[i] = rdman_coord_new(&rdman, rdman.root_coord); | |
| 850 } | |
| 851 for(i = 0; i < 5; i++) { | |
| 852 shapes[i] = sh_dummy_new(10 + i * 30, 10 + i * 20, 25, 15); | |
| 853 CU_ASSERT(shapes[i] != NULL); | |
| 854 } | |
| 855 for(i = 0; i < 3; i++) | |
| 856 rdman_add_shape(&rdman, shapes[i], coords[1]); | |
| 857 for(i = 3; i < 5; i++) | |
| 858 rdman_add_shape(&rdman, shapes[i], coords[2]); | |
| 859 | |
| 860 coords[1]->matrix[0] = 2; | |
| 861 coords[0]->matrix[4] = 2; | |
| 862 | |
| 863 update_aggr_matrix(coords[0]); | |
| 864 for(i = 0; i < 5; i++) | |
| 865 sh_dummy_transform(shapes[i]); | |
| 866 | |
| 13 | 867 pos[0][0] = 100; |
| 868 pos[0][1] = 120; | |
| 869 pos[1][0] = 100 + 140; | |
| 870 pos[1][1] = 120 + 40; | |
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871 geo_init(&geo); |
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872 geo_from_positions(&geo, 2, pos); |
| 12 | 873 |
| 874 n = rdman_find_overlaid_shapes(&rdman, &geo, &overlays); | |
| 875 CU_ASSERT(n == 2); | |
| 876 CU_ASSERT(overlays != NULL); | |
| 877 CU_ASSERT(overlays[0] == shapes[2]->geo); | |
| 878 CU_ASSERT(overlays[1] == shapes[3]->geo); | |
| 879 | |
| 880 free(overlays); | |
| 881 for(i = 0; i < 5; i++) | |
| 882 sh_dummy_free(shapes[i]); | |
| 883 | |
| 884 redraw_man_destroy(&rdman); | |
| 885 } | |
| 886 | |
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887 void test_rdman_redraw_changed(void) { |
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888 coord_t *coords[3]; |
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889 shape_t *shapes[3]; |
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890 sh_dummy_t **dummys; |
| 19 | 891 paint_t *paint; |
|
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892 redraw_man_t *rdman; |
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893 redraw_man_t _rdman; |
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894 int i; |
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895 |
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896 dummys = (sh_dummy_t **)shapes; |
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897 |
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898 rdman = &_rdman; |
|
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899 redraw_man_init(rdman, NULL, NULL); |
| 19 | 900 paint = dummy_paint_new(rdman); |
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901 for(i = 0; i < 3; i++) { |
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902 shapes[i] = sh_dummy_new(0, 0, 50, 50); |
| 19 | 903 rdman_paint_fill(rdman, paint, shapes[i]); |
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904 coords[i] = rdman_coord_new(rdman, rdman->root_coord); |
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905 coords[i]->matrix[2] = 10 + i * 100; |
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906 coords[i]->matrix[5] = 10 + i * 100; |
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907 rdman_coord_changed(rdman, coords[i]); |
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908 rdman_add_shape(rdman, shapes[i], coords[i]); |
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909 } |
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910 rdman_redraw_all(rdman); |
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911 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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912 CU_ASSERT(dummys[1]->draw_cnt == 1); |
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913 CU_ASSERT(dummys[2]->draw_cnt == 1); |
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914 |
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915 coords[2]->matrix[2] = 100; |
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916 coords[2]->matrix[5] = 100; |
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917 rdman_coord_changed(rdman, coords[2]); |
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918 rdman_redraw_changed(rdman); |
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919 |
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920 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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921 CU_ASSERT(dummys[1]->draw_cnt == 2); |
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922 CU_ASSERT(dummys[2]->draw_cnt == 2); |
| 19 | 923 |
| 924 paint->free(paint); | |
| 925 redraw_man_destroy(rdman); | |
|
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926 } |
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927 |
| 12 | 928 CU_pSuite get_redraw_man_suite(void) { |
| 929 CU_pSuite suite; | |
| 930 | |
| 931 suite = CU_add_suite("Suite_redraw_man", NULL, NULL); | |
| 932 CU_ADD_TEST(suite, test_rdman_find_overlaid_shapes); | |
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933 CU_ADD_TEST(suite, test_rdman_redraw_changed); |
| 12 | 934 |
| 935 return suite; | |
| 936 } | |
| 937 | |
| 938 #endif /* UNITTEST */ |