Mercurial > MadButterfly
annotate src/redraw_man.c @ 26:d50f33040de6
Set line width for path.
- consider width of line when compute bounding box area.
| author | Thinker K.F. Li <thinker@branda.to> |
|---|---|
| date | Sun, 03 Aug 2008 13:04:55 +0800 |
| parents | 29937c26bb01 |
| children | 19c603dd6ff9 |
| 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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Set line width for path.
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10 /* NOTE: bounding box should also consider width of stroke. |
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11 */ |
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Set line width for path.
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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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rename XXX_draw() to XXX_fill()
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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; |
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101 #ifdef UNITTEST |
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102 default: |
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103 sh_dummy_transform(shape); |
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104 break; |
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105 #endif /* UNITTEST */ |
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106 } |
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107 shape->geo->flags &= ~GEF_DIRTY; |
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108 } |
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109 |
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110 static void area_to_positions(area_t *area, co_aix (*poses)[2]) { |
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111 poses[0][0] = area->x; |
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112 poses[0][1] = area->y; |
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113 poses[1][0] = area->x + area->w; |
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114 poses[1][1] = area->y + area->h;; |
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115 } |
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116 |
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117 static int clean_coord(coord_t *coord) { |
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118 shape_t *shape; |
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119 geo_t *geo; |
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120 co_aix (*poses)[2]; |
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121 int cnt, pos_cnt; |
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122 |
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123 compute_aggr_of_coord(coord); |
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124 |
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125 /* Clean member shapes. */ |
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126 cnt = 0; |
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127 for(shape = STAILQ_HEAD(coord->members); |
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128 shape != NULL; |
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129 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { |
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130 geo = shape->geo; |
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131 SWAP(geo->cur_area, geo->last_area, area_t *); |
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132 clean_shape(shape); |
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133 cnt++; |
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134 } |
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135 |
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136 /* Compute area of the coord. */ |
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137 poses = (co_aix (*)[2])malloc(sizeof(co_aix [2]) * 2 * cnt); |
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138 if(poses == NULL) |
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139 return ERR; |
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140 |
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141 pos_cnt = 0; |
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142 for(shape = STAILQ_HEAD(coord->members); |
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143 shape != NULL; |
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144 shape = STAILQ_NEXT(shape_t, coord_mem_next, shape)) { |
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145 geo = shape->geo; |
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146 |
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147 area_to_positions(geo->cur_area, poses + pos_cnt); |
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148 pos_cnt += 2; |
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149 } |
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150 |
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151 SWAP(coord->cur_area, coord->last_area, area_t *); |
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152 area_init(coord->cur_area, pos_cnt, poses); |
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153 free(poses); |
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154 |
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155 coord->flags &= ~COF_DIRTY; |
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156 |
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157 return OK; |
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158 } |
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159 |
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160 static int clean_rdman_coords(redraw_man_t *rdman) { |
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161 coord_t *coord; |
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162 coord_t **dirty_coords; |
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163 int n_dirty_coords; |
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164 int i, r; |
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165 |
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166 n_dirty_coords = rdman->n_dirty_coords; |
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167 if(n_dirty_coords > 0) { |
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168 dirty_coords = rdman->dirty_coords; |
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169 _insert_sort((void **)dirty_coords, n_dirty_coords, |
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170 OFFSET(coord_t, order)); |
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171 for(i = 0; i < n_dirty_coords; i++) { |
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172 coord = dirty_coords[i]; |
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173 if(!(coord->flags & COF_DIRTY)) |
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174 continue; |
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175 r = clean_coord(coord); |
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176 if(r != OK) |
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177 return ERR; |
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178 /* These two steps can be avoided for drawing all. */ |
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179 add_dirty_area(rdman, &coord->areas[0]); |
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180 add_dirty_area(rdman, &coord->areas[1]); |
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181 } |
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182 rdman->n_dirty_coords = 0; |
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183 } |
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184 return OK; |
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185 } |
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186 |
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187 int redraw_man_init(redraw_man_t *rdman, cairo_t *cr, cairo_t *backend) { |
| 12 | 188 extern void redraw_man_destroy(redraw_man_t *rdman); |
| 189 | |
| 190 memset(rdman, 0, sizeof(redraw_man_t)); | |
| 191 | |
| 192 rdman->geo_pool = elmpool_new(sizeof(geo_t), 128); | |
| 193 if(rdman->geo_pool == NULL) | |
| 194 return ERR; | |
| 195 | |
| 196 rdman->coord_pool = elmpool_new(sizeof(coord_t), 16); | |
| 197 if(rdman->coord_pool == NULL) { | |
| 198 elmpool_free(rdman->geo_pool); | |
| 199 return ERR; | |
| 200 } | |
| 201 | |
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202 rdman->shnode_pool = elmpool_new(sizeof(shnode_t), 16); |
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203 if(rdman->shnode_pool == NULL) { |
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204 elmpool_free(rdman->geo_pool); |
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205 elmpool_free(rdman->coord_pool); |
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206 return ERR; |
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207 } |
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208 |
| 12 | 209 rdman->root_coord = elmpool_elm_alloc(rdman->coord_pool); |
| 210 if(rdman->root_coord == NULL) | |
| 211 redraw_man_destroy(rdman); | |
| 13 | 212 rdman->n_coords = 1; |
| 12 | 213 coord_init(rdman->root_coord, NULL); |
| 214 | |
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215 rdman->cr = cr; |
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216 rdman->backend = backend; |
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217 |
| 12 | 218 return OK; |
| 219 } | |
| 220 | |
| 221 void redraw_man_destroy(redraw_man_t *rdman) { | |
| 222 elmpool_free(rdman->coord_pool); | |
| 223 elmpool_free(rdman->geo_pool); | |
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224 elmpool_free(rdman->shnode_pool); |
| 13 | 225 if(rdman->dirty_coords) |
| 226 free(rdman->dirty_coords); | |
| 14 | 227 if(rdman->dirty_geos) |
| 228 free(rdman->dirty_geos); | |
| 12 | 229 } |
| 230 | |
| 231 | |
| 232 #define ASSERT(x) | |
| 233 /* | |
| 234 * Change transformation matrix | |
| 235 * - update aggregated transformation matrix | |
| 236 * - of coord_t object been changed. | |
| 237 * - of children coord_t objects. | |
| 238 * - redraw members of coord_t objects. | |
| 239 * - redraw shape objects they are overlaid with members. | |
| 240 * - find out overlaid shape objects. | |
| 241 * - geo_t of a coord_t object | |
| 242 * - can make finding more efficiency. | |
| 243 * - fill overlay geo_t objects of members. | |
| 244 * | |
| 245 * Change a shape object | |
| 246 * - redraw changed object. | |
| 247 * - redraw shape objects they are overlaid with changed object. | |
| 248 * - find out overlaid shape objects. | |
| 249 * | |
| 250 * That coord and geo of shape objects are setted by user code | |
| 251 * give user code a chance to collect coord and geo objects together | |
| 252 * and gain interest of higher cache hit rate. | |
| 253 */ | |
| 254 | |
| 255 /*! \brief Find out all affected shape objects. | |
| 256 * | |
| 257 * Find out all shape objects that are overalid with geo_t of | |
| 258 * a geometry changed object. | |
| 259 * | |
| 260 * Linear scan geo_t objects of all shape objects in all_shapes | |
| 261 * list of a redraw_man_t object. | |
| 262 */ | |
| 263 int rdman_find_overlaid_shapes(redraw_man_t *rdman, geo_t *geo, | |
| 264 geo_t ***overlays) { | |
| 265 int n_geos; | |
| 266 geo_t **geos; | |
| 267 geo_t *geo_cur; | |
| 268 int n_overlays; | |
| 269 geo_t **_overlays; | |
| 270 int i; | |
| 271 | |
| 272 n_geos = rdman->n_geos; | |
| 273 | |
| 274 geos = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
| 275 if(geos == NULL) | |
| 276 return -1; | |
| 277 | |
| 278 _overlays = (geo_t **)malloc(sizeof(geo_t *) * n_geos); | |
| 279 if(geos == NULL) { | |
| 280 free(geos); | |
| 281 return -1; | |
| 282 } | |
| 283 | |
| 284 geo_cur = STAILQ_HEAD(rdman->all_geos); | |
| 285 for(i = 0; i < n_geos; i++) { | |
| 286 geos[i] = geo_cur; | |
| 287 geo_cur = STAILQ_NEXT(geo_t, next, geo_cur); | |
| 288 } | |
| 289 geo_mark_overlay(geo, n_geos, geos, &n_overlays, _overlays); | |
| 290 | |
| 291 free(geos); | |
| 292 *overlays = _overlays; | |
| 293 | |
| 294 return n_overlays; | |
| 295 } | |
| 296 | |
| 297 int rdman_add_shape(redraw_man_t *rdman, shape_t *shape, coord_t *coord) { | |
| 298 geo_t *geo; | |
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299 #ifdef GEO_ORDER |
| 13 | 300 geo_t *visit; |
| 301 unsigned int next_order; | |
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302 #endif |
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303 int r; |
| 12 | 304 |
| 305 geo = elmpool_elm_alloc(rdman->geo_pool); | |
| 306 if(geo == NULL) | |
| 307 return ERR; | |
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308 |
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309 geo_init(geo); |
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310 |
| 12 | 311 sh_attach_geo(shape, geo); |
| 312 STAILQ_INS_TAIL(rdman->all_geos, geo_t, next, geo); | |
| 313 rdman->n_geos++; | |
| 13 | 314 |
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315 #ifdef GEO_ORDER |
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316 /* TODO: remove order number. */ |
| 13 | 317 geo->order = ++rdman->next_geo_order; |
| 318 if(geo->order == 0) { | |
| 319 next_order = 0; | |
| 320 for(visit = STAILQ_HEAD(rdman->all_geos); | |
| 321 visit != NULL; | |
| 322 visit = STAILQ_NEXT(geo_t, next, visit)) | |
| 323 visit->order = ++next_order; | |
| 324 rdman->next_geo_order = next_order; | |
| 325 } | |
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326 #endif |
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327 |
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328 /* New one should be dirty to recompute it when drawing. */ |
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329 geo->flags |= GEF_DIRTY; |
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330 r = add_dirty_geo(rdman, geo); |
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331 if(r != OK) |
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332 return ERR; |
| 13 | 333 |
| 12 | 334 sh_attach_coord(shape, coord); |
| 335 | |
| 336 return OK; | |
| 337 } | |
| 338 | |
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339 /*! \brief Remove a shape object from redraw manager. |
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340 * |
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341 * TODO: redraw shape objects that overlaid with removed one. |
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342 */ |
| 12 | 343 int rdman_remove_shape(redraw_man_t *rdman, shape_t *shape) { |
| 344 STAILQ_REMOVE(rdman->all_geos, geo_t, next, shape->geo); | |
| 345 elmpool_elm_free(rdman->geo_pool, shape->geo); | |
| 346 sh_detach_geo(shape); | |
| 347 rdman->n_geos--; | |
| 348 sh_detach_coord(shape); | |
| 349 return OK; | |
| 350 } | |
| 351 | |
| 352 coord_t *rdman_coord_new(redraw_man_t *rdman, coord_t *parent) { | |
| 13 | 353 coord_t *coord, *root_coord; |
| 354 coord_t *visit; | |
| 12 | 355 |
| 356 coord = elmpool_elm_alloc(rdman->coord_pool); | |
| 357 if(coord == NULL) | |
| 358 return NULL; | |
| 359 | |
| 360 coord_init(coord, parent); | |
| 13 | 361 rdman->n_coords++; |
| 362 | |
| 363 coord->order = ++rdman->next_coord_order; | |
| 364 if(coord->order == 0) { | |
| 365 rdman->next_coord_order = 0; | |
| 366 root_coord = visit = rdman->root_coord; | |
| 367 /* skip root coord. */ | |
| 368 visit = preorder_coord_subtree(root_coord, visit); | |
| 369 while(visit) { | |
| 370 visit->order = ++rdman->next_coord_order; | |
| 371 visit = preorder_coord_subtree(root_coord, visit); | |
| 372 } | |
| 373 } | |
| 12 | 374 |
| 375 return coord; | |
| 376 } | |
| 377 | |
| 378 /*! \brief Free a coord of a redraw_man_t object. | |
| 379 * | |
| 380 * \param coord is a coord_t without children and members. | |
| 381 * \return 0 for successful, -1 for error. | |
| 382 */ | |
| 383 int rdman_coord_free(redraw_man_t *rdman, coord_t *coord) { | |
| 384 coord_t *parent; | |
| 385 | |
| 386 parent = coord->parent; | |
| 387 if(parent == NULL) | |
| 388 return ERR; | |
| 389 | |
| 390 if(STAILQ_HEAD(coord->members) != NULL) | |
| 391 return ERR; | |
| 392 | |
| 393 if(STAILQ_HEAD(coord->children) != NULL) | |
| 394 return ERR; | |
| 395 | |
| 396 STAILQ_REMOVE(parent->children, coord_t, sibling, coord); | |
| 397 elmpool_elm_free(rdman->coord_pool, coord); | |
| 13 | 398 rdman->n_coords--; |
| 399 | |
| 400 return OK; | |
| 401 } | |
| 402 | |
| 403 /*! \brief Mark a coord is changed. | |
| 404 * | |
| 405 * A changed coord_t object is marked as dirty and put | |
| 406 * into dirty_coords list. | |
| 407 */ | |
| 408 int rdman_coord_changed(redraw_man_t *rdman, coord_t *coord) { | |
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409 coord_t *child; |
| 13 | 410 int max_dirty_coords; |
| 411 int r; | |
| 412 | |
| 413 if(coord->flags & COF_DIRTY) | |
| 414 return OK; | |
| 415 | |
| 416 if(rdman->n_dirty_coords >= rdman->max_dirty_coords) { | |
| 417 /* Max of dirty_coords is not big enough. */ | |
| 418 max_dirty_coords = rdman->max_dirty_coords + 16; | |
| 419 | |
| 420 r = extend_memblk((void **)&rdman->dirty_coords, | |
| 421 sizeof(coord_t *) * rdman->n_dirty_coords, | |
| 422 sizeof(coord_t *) * max_dirty_coords); | |
| 423 rdman->max_dirty_coords = max_dirty_coords; | |
| 424 } | |
| 425 | |
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426 /* Make the coord and child coords dirty. */ |
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427 for(child = coord; |
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428 child != NULL; |
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429 child = preorder_coord_subtree(coord, child)) { |
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430 rdman->dirty_coords[rdman->n_dirty_coords++] = coord; |
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431 coord->flags |= COF_DIRTY; |
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432 } |
| 13 | 433 |
| 434 return OK; | |
| 435 } | |
| 436 | |
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437 static int _rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
| 13 | 438 geo_t *geo; |
| 439 int r; | |
| 440 | |
| 441 geo = shape->geo; | |
| 442 | |
| 443 if(geo->flags & GEF_DIRTY) | |
| 444 return OK; | |
| 445 | |
| 446 r = add_dirty_geo(rdman, geo); | |
| 447 if(r == ERR) | |
| 448 return ERR; | |
| 449 geo->flags |= GEF_DIRTY; | |
| 12 | 450 |
| 451 return OK; | |
| 452 } | |
| 453 | |
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454 /*! \brief Mark a shape is changed. |
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455 * |
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456 * The geo_t object of a changed shape is mark as dirty and |
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457 * put into dirty_geos list. |
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458 */ |
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459 int rdman_shape_changed(redraw_man_t *rdman, shape_t *shape) { |
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460 return _rdman_shape_changed(rdman, shape); |
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461 } |
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462 |
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463 /* Drawing and Redrawing |
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464 * ============================================================ |
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465 */ |
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466 |
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467 #ifndef UNITTEST |
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468 static void set_shape_stroke_param(shape_t *shape, cairo_t *cr) { |
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469 cairo_set_line_width(cr, shape->stroke_width); |
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470 } |
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471 #else |
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472 static void set_shape_stroke_param(shape_t *shape, cairo_t *cr) { |
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473 } |
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474 #endif |
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475 |
| 22 | 476 static void draw_shape(redraw_man_t *rdman, shape_t *shape) { |
| 477 paint_t *fill, *stroke; | |
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478 |
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479 fill = shape->fill; |
| 19 | 480 if(fill) { |
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481 fill->prepare(fill, rdman->cr); |
| 19 | 482 switch(shape->sh_type) { |
| 483 case SHT_PATH: | |
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484 sh_path_fill(shape, rdman->cr); |
| 19 | 485 break; |
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486 #ifdef UNITTEST |
| 19 | 487 default: |
|
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488 sh_dummy_fill(shape, rdman->cr); |
| 19 | 489 break; |
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490 #endif /* UNITTEST */ |
| 19 | 491 } |
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492 } |
| 22 | 493 stroke = shape->stroke; |
| 494 if(stroke) { | |
| 495 stroke->prepare(stroke, rdman->cr); | |
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496 set_shape_stroke_param(shape, rdman->cr); |
| 22 | 497 switch(shape->sh_type) { |
| 498 case SHT_PATH: | |
| 499 sh_path_stroke(shape, rdman->cr); | |
| 500 break; | |
| 501 #ifdef UNITTEST | |
| 502 default: | |
| 503 /* sh_dummy_fill(shape, rdman->cr); */ | |
| 504 break; | |
| 505 #endif /* UNITTEST */ | |
| 506 } | |
| 507 } | |
| 13 | 508 } |
| 509 | |
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510 #ifndef UNITTEST |
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511 static void clean_canvas(cairo_t *cr) { |
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512 /* TODO: clean to background color. */ |
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513 cairo_set_source_rgb(cr, 0, 0, 0); |
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514 cairo_paint(cr); |
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515 } |
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516 |
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517 static void make_clip(cairo_t *cr, int n_dirty_areas, |
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518 area_t **dirty_areas) { |
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519 int i; |
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520 area_t *area; |
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521 |
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522 for(i = 0; i < n_dirty_areas; i++) { |
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523 area = dirty_areas[i]; |
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524 cairo_rectangle(cr, area->x, area->y, area->w, area->h); |
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525 } |
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526 cairo_clip(cr); |
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527 } |
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528 |
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529 static void reset_clip(redraw_man_t *rdman) { |
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530 cairo_reset_clip(rdman->cr); |
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531 cairo_reset_clip(rdman->backend); |
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532 } |
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533 |
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534 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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535 area_t **dirty_areas) { |
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536 if(n_dirty_areas) |
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537 make_clip(rdman->backend, n_dirty_areas, dirty_areas); |
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538 |
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539 cairo_paint(rdman->backend); |
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540 } |
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541 #else /* UNITTEST */ |
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542 static void clean_canvas(cairo_t *cr) { |
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543 } |
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544 |
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545 static void make_clip(cairo_t *cr, int n_dirty_areas, |
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546 area_t **dirty_areas) { |
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547 } |
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548 |
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549 static void reset_clip(redraw_man_t *rdman) { |
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550 } |
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551 |
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552 static void copy_cr_2_backend(redraw_man_t *rdman, int n_dirty_areas, |
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553 area_t **dirty_areas) { |
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554 } |
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555 #endif /* UNITTEST */ |
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556 |
| 22 | 557 static void draw_shapes_in_areas(redraw_man_t *rdman, |
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558 int n_areas, |
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559 area_t **areas) { |
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560 geo_t *visit_geo; |
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561 int i; |
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562 |
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563 for(visit_geo = STAILQ_HEAD(rdman->all_geos); |
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564 visit_geo != NULL; |
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565 visit_geo = STAILQ_NEXT(geo_t, next, visit_geo)) { |
|
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A simple animation using rdman_redraw_changed().
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566 if(visit_geo->flags & GEF_DIRTY) |
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567 clean_shape(visit_geo->shape); |
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568 for(i = 0; i < n_areas; i++) { |
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569 if(is_overlay(visit_geo->cur_area, areas[i])) { |
| 22 | 570 draw_shape(rdman, visit_geo->shape); |
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571 break; |
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572 } |
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573 } |
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574 } |
| 13 | 575 } |
| 576 | |
|
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577 |
| 13 | 578 /*! \brief Re-draw all changed shapes or shapes affected by changed coords. |
| 579 * | |
| 580 * A coord object has a geo to keep track the range that it's members will | |
| 581 * draw on. Geo of a coord should be recomputed when the coord is changed. | |
| 582 * Geo of a coord used to accelerate finding overlay shape objects of | |
| 583 * a specified geo. A coord object also must be recomputed when one of | |
| 584 * it's members is changed. | |
| 585 * | |
| 586 * New and old geo values of a coord object that is recomputed for | |
| 587 * changing of it-self must be used to find overlay shape objects. | |
| 588 * New and old geo values of a shape should also be used to find | |
| 589 * overlay shape objects, too. If a shape's coord is changed, shape's | |
| 590 * geo object is not used to find overlay shape objects any more. | |
| 591 * | |
| 592 * steps: | |
| 593 * - update chagned coord objects | |
| 14 | 594 * - recompute area for changed coord objects |
| 13 | 595 * - recompute geo for members shape objects |
| 14 | 596 * - clear dirty of geo for members to prevent from |
| 597 * recomputing for change of shape objects. | |
| 598 * - add old and new area value to list of dirty areas. | |
| 13 | 599 * - recompute geo for changed shape objects |
| 14 | 600 * - only if a shape object is dirty. |
| 601 * - put new and old value of area of geo to list of dirty areas. | |
| 602 * - Scan all shapes and redraw shapes overlaid with dirty areas. | |
| 13 | 603 * |
| 14 | 604 * dirty flag of coord objects is cleared after update. |
|
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605 * dirty flag of geo objects is also cleared after recomputing. |
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606 * Clean dirty flag can prevent redundant computing for geo and |
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607 * corod objects. |
| 14 | 608 * |
| 13 | 609 */ |
| 610 int rdman_redraw_changed(redraw_man_t *rdman) { | |
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611 int i, r; |
| 14 | 612 geo_t *visit_geo, **dirty_geos; |
| 613 int n_dirty_geos; | |
| 13 | 614 int n_dirty_areas; |
| 14 | 615 area_t **dirty_areas; |
| 13 | 616 |
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617 r = clean_rdman_coords(rdman); |
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618 if(r != OK) |
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619 return ERR; |
| 13 | 620 |
| 14 | 621 n_dirty_geos = rdman->n_dirty_geos; |
| 622 if(n_dirty_geos > 0) { | |
| 623 dirty_geos = rdman->dirty_geos; | |
| 624 for(i = 0; i < n_dirty_geos; i++) { | |
| 625 visit_geo = dirty_geos[i]; | |
| 13 | 626 if(!(visit_geo->flags & GEF_DIRTY)) |
| 627 continue; | |
| 628 | |
| 629 SWAP(visit_geo->cur_area, visit_geo->last_area, area_t *); | |
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630 clean_shape(visit_geo->shape); |
| 13 | 631 add_dirty_area(rdman, visit_geo->cur_area); |
| 632 add_dirty_area(rdman, visit_geo->last_area); | |
| 633 } | |
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634 rdman->n_dirty_geos = 0; |
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635 } |
| 13 | 636 |
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637 n_dirty_areas = rdman->n_dirty_areas; |
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638 dirty_areas = rdman->dirty_areas; |
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639 if(n_dirty_areas > 0) { |
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29937c26bb01
Fix bug of a dark line appear when animating.
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640 clean_canvas(rdman->cr); |
| 22 | 641 draw_shapes_in_areas(rdman, n_dirty_areas, dirty_areas); |
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642 copy_cr_2_backend(rdman, rdman->n_dirty_areas, rdman->dirty_areas); |
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643 rdman->n_dirty_areas = 0; |
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644 reset_clip(rdman); |
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645 } |
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646 rdman->n_dirty_areas = 0; |
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647 |
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648 return OK; |
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649 } |
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650 |
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651 int rdman_redraw_all(redraw_man_t *rdman) { |
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652 geo_t *geo; |
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653 |
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654 clean_rdman_coords(rdman); |
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655 rdman->n_dirty_areas = 0; |
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656 |
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657 for(geo = STAILQ_HEAD(rdman->all_geos); |
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658 geo != NULL; |
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659 geo = STAILQ_NEXT(geo_t, next, geo)) { |
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660 if(geo->flags & GEF_DIRTY) |
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661 clean_shape(geo->shape); |
| 22 | 662 draw_shape(rdman, geo->shape); |
| 13 | 663 } |
|
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664 copy_cr_2_backend(rdman, 0, NULL); |
|
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56f592f56ff7
Fix bug and add linear gradient paint.
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parents:
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665 rdman->n_dirty_geos = 0; |
| 13 | 666 |
| 667 return OK; | |
| 12 | 668 } |
| 669 | |
|
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670 shnode_t *shnode_new(redraw_man_t *rdman, shape_t *shape) { |
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671 shnode_t *node; |
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672 |
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673 node = (shnode_t *)elmpool_elm_alloc(rdman->shnode_pool); |
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674 if(node) { |
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675 node->shape = shape; |
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676 node->next = NULL; |
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677 } |
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678 return node; |
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679 } |
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680 |
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681 int rdman_paint_changed(redraw_man_t *rdman, paint_t *paint) { |
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682 shnode_t *node; |
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683 int r; |
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684 |
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685 for(node = STAILQ_HEAD(paint->members); |
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686 node != NULL; |
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687 node = STAILQ_NEXT(shnode_t, next, node)) { |
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688 r = _rdman_shape_changed(rdman, node->shape); |
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689 if(r != OK) |
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690 return ERR; |
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691 } |
|
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|
692 return OK; |
|
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|
693 } |
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|
694 |
| 12 | 695 /* |
|
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696 * Dirty of geo |
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697 * A geo is dirty when any of the shape, size or positions is changed. |
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698 * It's geo and positions should be recomputed before drawing. So, |
|
e17e12b112c4
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parents:
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699 * 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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700 * The list is inspected before drawing to make sure the right shape, |
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701 * size, and positions. |
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A simple animation using rdman_redraw_changed().
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702 * |
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703 * Dirty of coord |
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A simple animation using rdman_redraw_changed().
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704 * 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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705 * 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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706 * 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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707 * 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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708 * 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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709 * all these member geos will be recomputed for computing new current |
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710 * area of the coord. The changes of a coord also affect child |
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711 * coords. Once parent is dirty, all children are also dirty for |
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712 * their aggregate matrix out of date. Dirty coords should be |
|
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713 * clean in preorder of tree traversal. The dirty_coords list |
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714 * are sorted to keep the order before cleaning. |
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715 * Whenever a coord is marked dirty and put into dirty_coords list, |
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716 * all it's children should also be marked and put. |
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717 * |
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718 * The procedure of clean coords comprises recomputing aggregate |
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719 * tranform matrix and area where members spreading in. |
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720 * |
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721 * The list is inspected before drawing to recompute new shape, size, |
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722 * and positions of member geos of coords in the list. The drity |
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723 * flag of member geos will be clean. |
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724 * |
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725 * Clean coords should be performed before clean geos, since clean |
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726 * coords will also clean member geos. |
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727 */ |
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728 |
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729 /* |
| 12 | 730 * When redraw an area, the affected elements may also extend to |
| 731 * outside of the area. Since the order of drawing will change | |
| 732 * the result, it will infect more and more elements to keep | |
| 733 * drawing order althrough they are overlaid directly with | |
| 734 * specified area. | |
| 735 * | |
| 736 * To fix the problem, we don't extend the set of redrawing to | |
| 737 * elements they are not overliad directly. The redrawing is | |
| 738 * performed on a temporary surface, clipped to fit the area, and | |
| 739 * update only specified area on the destinate surface. | |
| 740 */ | |
| 741 | |
| 742 /* | |
| 743 * To accelerate speed of transformation, when a matrix changed, | |
| 744 * transformation should be aggregated and computed in a loop. | |
| 745 * It can get intereset of higher hit rate of cache. | |
| 746 * - shapes prvoide list of positions needed to be transformed. | |
| 747 * - redraw_man transforms positions from shapes. | |
| 748 * - shapes drawing with result of transforms. | |
| 749 * - shapes should be called to give them a chance to update geometries. | |
| 750 */ | |
| 751 | |
| 13 | 752 /* |
| 753 * functions: | |
| 754 * - redraw all | |
| 755 * - redraw changed | |
| 756 */ | |
| 757 | |
| 12 | 758 #ifdef UNITTEST |
| 759 | |
| 760 #include <CUnit/Basic.h> | |
| 19 | 761 #include "paint.h" |
| 12 | 762 |
| 763 struct _sh_dummy { | |
| 764 shape_t shape; | |
| 765 co_aix x, y; | |
| 766 co_aix w, h; | |
|
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767 int draw_cnt; |
| 12 | 768 }; |
| 769 | |
| 770 shape_t *sh_dummy_new(co_aix x, co_aix y, co_aix w, co_aix h) { | |
| 771 sh_dummy_t *dummy; | |
| 772 | |
| 773 dummy = (sh_dummy_t *)malloc(sizeof(sh_dummy_t)); | |
| 774 if(dummy == NULL) | |
| 775 return NULL; | |
| 776 | |
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777 memset(dummy, 0, sizeof(sh_dummy_t)); |
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778 |
| 12 | 779 dummy->x = x; |
| 780 dummy->y = y; | |
| 781 dummy->w = w; | |
| 782 dummy->h = h; | |
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783 dummy->draw_cnt = 0; |
| 12 | 784 |
| 785 return (shape_t *)dummy; | |
| 786 } | |
| 787 | |
| 788 void sh_dummy_free(shape_t *sh) { | |
| 789 free(sh); | |
| 790 } | |
| 791 | |
| 792 void sh_dummy_transform(shape_t *shape) { | |
| 793 sh_dummy_t *dummy = (sh_dummy_t *)shape; | |
| 794 co_aix poses[2][2]; | |
| 795 co_aix x1, y1, x2, y2; | |
| 796 | |
| 797 if(shape->geo && shape->coord) { | |
| 798 x1 = dummy->x; | |
| 799 y1 = dummy->y; | |
| 800 x2 = x1 + dummy->w; | |
| 801 y2 = y1 + dummy->h; | |
| 802 | |
| 803 coord_trans_pos(shape->coord, &x1, &y1); | |
| 804 coord_trans_pos(shape->coord, &x2, &y2); | |
| 805 poses[0][0] = x1; | |
| 806 poses[0][1] = y1; | |
| 807 poses[1][0] = x2; | |
| 808 poses[1][1] = y2; | |
| 809 | |
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810 if(shape->geo) |
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811 geo_from_positions(shape->geo, 2, poses); |
| 12 | 812 } |
| 813 } | |
| 814 | |
|
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815 void sh_dummy_fill(shape_t *shape, cairo_t *cr) { |
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816 sh_dummy_t *dummy; |
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817 |
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818 dummy = (sh_dummy_t *)shape; |
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819 dummy->draw_cnt++; |
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820 } |
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821 |
| 19 | 822 static void dummy_paint_prepare(paint_t *paint, cairo_t *cr) { |
| 823 } | |
| 824 | |
| 825 static void dummy_paint_free(paint_t *paint) { | |
| 826 if(paint) | |
| 827 free(paint); | |
| 828 } | |
| 829 | |
| 830 paint_t *dummy_paint_new(redraw_man_t *rdman) { | |
| 831 paint_t *paint; | |
| 832 | |
| 833 paint = (paint_t *)malloc(sizeof(paint_t)); | |
| 834 if(paint == NULL) | |
| 835 return NULL; | |
| 836 | |
| 837 paint_init(paint, dummy_paint_prepare, dummy_paint_free); | |
| 838 | |
| 839 return paint; | |
| 840 } | |
| 841 | |
| 12 | 842 void test_rdman_find_overlaid_shapes(void) { |
| 843 redraw_man_t rdman; | |
| 844 geo_t geo; | |
| 845 coord_t *coords[3]; | |
| 846 shape_t *shapes[5]; | |
| 847 geo_t **overlays; | |
| 13 | 848 co_aix pos[2][2]; |
| 12 | 849 int n; |
| 850 int i; | |
| 851 | |
|
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852 redraw_man_init(&rdman, NULL, NULL); |
| 12 | 853 coords[0] = rdman.root_coord; |
| 854 for(i = 1; i < 3; i++) { | |
| 855 coords[i] = rdman_coord_new(&rdman, rdman.root_coord); | |
| 856 } | |
| 857 for(i = 0; i < 5; i++) { | |
| 858 shapes[i] = sh_dummy_new(10 + i * 30, 10 + i * 20, 25, 15); | |
| 859 CU_ASSERT(shapes[i] != NULL); | |
| 860 } | |
| 861 for(i = 0; i < 3; i++) | |
| 862 rdman_add_shape(&rdman, shapes[i], coords[1]); | |
| 863 for(i = 3; i < 5; i++) | |
| 864 rdman_add_shape(&rdman, shapes[i], coords[2]); | |
| 865 | |
| 866 coords[1]->matrix[0] = 2; | |
| 867 coords[0]->matrix[4] = 2; | |
| 868 | |
| 869 update_aggr_matrix(coords[0]); | |
| 870 for(i = 0; i < 5; i++) | |
| 871 sh_dummy_transform(shapes[i]); | |
| 872 | |
| 13 | 873 pos[0][0] = 100; |
| 874 pos[0][1] = 120; | |
| 875 pos[1][0] = 100 + 140; | |
| 876 pos[1][1] = 120 + 40; | |
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877 geo_init(&geo); |
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878 geo_from_positions(&geo, 2, pos); |
| 12 | 879 |
| 880 n = rdman_find_overlaid_shapes(&rdman, &geo, &overlays); | |
| 881 CU_ASSERT(n == 2); | |
| 882 CU_ASSERT(overlays != NULL); | |
| 883 CU_ASSERT(overlays[0] == shapes[2]->geo); | |
| 884 CU_ASSERT(overlays[1] == shapes[3]->geo); | |
| 885 | |
| 886 free(overlays); | |
| 887 for(i = 0; i < 5; i++) | |
| 888 sh_dummy_free(shapes[i]); | |
| 889 | |
| 890 redraw_man_destroy(&rdman); | |
| 891 } | |
| 892 | |
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893 void test_rdman_redraw_changed(void) { |
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894 coord_t *coords[3]; |
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895 shape_t *shapes[3]; |
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896 sh_dummy_t **dummys; |
| 19 | 897 paint_t *paint; |
|
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898 redraw_man_t *rdman; |
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899 redraw_man_t _rdman; |
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900 int i; |
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901 |
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902 dummys = (sh_dummy_t **)shapes; |
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903 |
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904 rdman = &_rdman; |
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905 redraw_man_init(rdman, NULL, NULL); |
| 19 | 906 paint = dummy_paint_new(rdman); |
|
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907 for(i = 0; i < 3; i++) { |
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908 shapes[i] = sh_dummy_new(0, 0, 50, 50); |
| 19 | 909 rdman_paint_fill(rdman, paint, shapes[i]); |
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910 coords[i] = rdman_coord_new(rdman, rdman->root_coord); |
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911 coords[i]->matrix[2] = 10 + i * 100; |
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912 coords[i]->matrix[5] = 10 + i * 100; |
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913 rdman_coord_changed(rdman, coords[i]); |
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914 rdman_add_shape(rdman, shapes[i], coords[i]); |
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915 } |
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916 rdman_redraw_all(rdman); |
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917 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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918 CU_ASSERT(dummys[1]->draw_cnt == 1); |
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919 CU_ASSERT(dummys[2]->draw_cnt == 1); |
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920 |
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921 coords[2]->matrix[2] = 100; |
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922 coords[2]->matrix[5] = 100; |
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923 rdman_coord_changed(rdman, coords[2]); |
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924 rdman_redraw_changed(rdman); |
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925 |
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926 CU_ASSERT(dummys[0]->draw_cnt == 1); |
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927 CU_ASSERT(dummys[1]->draw_cnt == 2); |
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928 CU_ASSERT(dummys[2]->draw_cnt == 2); |
| 19 | 929 |
| 930 paint->free(paint); | |
| 931 redraw_man_destroy(rdman); | |
|
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932 } |
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933 |
| 12 | 934 CU_pSuite get_redraw_man_suite(void) { |
| 935 CU_pSuite suite; | |
| 936 | |
| 937 suite = CU_add_suite("Suite_redraw_man", NULL, NULL); | |
| 938 CU_ADD_TEST(suite, test_rdman_find_overlaid_shapes); | |
|
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939 CU_ADD_TEST(suite, test_rdman_redraw_changed); |
| 12 | 940 |
| 941 return suite; | |
| 942 } | |
| 943 | |
| 944 #endif /* UNITTEST */ |