Mercurial > MadButterfly

annotate src/geo.c @ 10:7cfecdce94cc

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Remove warning messages
author Thinker K.F. Li <thinker@branda.to>
date Sat, 26 Jul 2008 05:32:31 +0800
parents 9c331ec9e210
children 79e9edf4c00a
rev   line source
5
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1 /*! \brief Determine who should be re-drawed.
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2 * \file
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3 * When part of graphic are chagned, not mater size, shape, or position,
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4 * the components effected or overlaid should be re-drawed. This module
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5 * figures out components that should be re-drawed.
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6 */
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7 #include <stdio.h>
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8 #include "mb_types.h"
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9
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10 struct _geo {
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11 co_aix x, y;
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12 co_aix w, h;
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13 co_aix rel_x, rel_y;
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14 co_aix orig_x, orig_y;
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15 int n_subs;
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16 struct _geo *subs;
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17 };
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18
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19 static int is_scale_overlay(co_aix x1, co_aix w1, co_aix x2, co_aix w2) {
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20 if(x1 > x2) {
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21 if((x1 - x2) >= w2)
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22 return 0;
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23 } else {
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24 if((x2 - x1) >= w1)
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25 return 0;
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26 }
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27 return 1;
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28 }
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29
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30 static int is_overlay(geo_t *r1, geo_t *r2) {
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31 if(!is_scale_overlay(r1->x, r1->w, r2->x, r2->w))
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32 return 0;
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33 if(!is_scale_overlay(r1->y, r1->h, r2->y, r2->h))
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34 return 0;
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35
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36 return 1;
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37 }
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38
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39 void geo_init(geo_t *g, int n_pos, co_aix pos[][2]) {
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40 co_aix min_x, max_x;
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41 co_aix min_y, max_y;
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42 co_aix x, y;
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43 int i;
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44
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45 min_x = max_x = pos[0][0];
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46 min_y = max_y = pos[0][1];
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47 for(i = 1; i < n_pos; i++) {
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48 x = pos[i][0];
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49 if(x < min_x)
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50 min_x = x;
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51 else if(x > max_x)
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52 max_x = x;
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53 y = pos[i][1];
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54 if(y < min_y)
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55 min_y = y;
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56 else if(y > max_y)
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57 max_y = y;
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58 }
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59 g->x = min_x;
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60 g->w = max_x - min_x;
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61 g->y = min_y;
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62 g->h = max_y - min_y;
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63 }
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64
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65 void geo_mark_overlay(geo_t *g, int n_others, geo_t **others,
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66 int *n_overlays, geo_t **overlays) {
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67 int i, ov_idx;
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68
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69 ov_idx = 0;
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70 for(i = 0; i < n_others; i++) {
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71 if(is_overlay(g, others[i]))
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72 overlays[ov_idx++] = others[i];
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73 }
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74 *n_overlays = ov_idx;
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75 }
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76
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77
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78 #ifdef UNITTEST
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79
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80 #include <CUnit/Basic.h>
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81
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82 void test_geo_init(void) {
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83 co_aix data[][2] = {
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84 {33, 25}, {49, 12},
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85 {14, 28}, {39, 56}};
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86 geo_t g;
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87
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88 geo_init(&g, 4, data);
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89 CU_ASSERT(g.x == 14);
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90 CU_ASSERT(g.w == 35);
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91 CU_ASSERT(g.y == 12);
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92 CU_ASSERT(g.h == 44);
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93 }
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94
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95 void test_geo_mark_overlay(void) {
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96 geo_t _geos[3], *geos[3], *overlays[3];
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97 geo_t g;
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98 int i, n_ov;
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99
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100 for(i = 0; i < 3; i++) {
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101 _geos[i].x = i * 50;
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102 _geos[i].y = i * 50;
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103 _geos[i].w = 55;
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104 _geos[i].h = 66;
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105 geos[i] = _geos + i;
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106 }
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107 g.x = 88;
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108 g.y = 79;
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109 g.w = 70;
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110 g.h = 70;
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111
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112 /* overlay with geos[1] and geos[2] */
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113 geo_mark_overlay(&g, 3, geos, &n_ov, overlays);
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114 CU_ASSERT(n_ov == 2);
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115 CU_ASSERT(overlays[0] == geos[1]);
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116 CU_ASSERT(overlays[1] == geos[2]);
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117
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118 /* right side of geos[1], and up side of geos[2] */
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119 g.x = 105;
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120 g.y = 50;
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121 g.w = 50;
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122 g.h = 51;
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123 geo_mark_overlay(&g, 3, geos, &n_ov, overlays);
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124 CU_ASSERT(n_ov == 1);
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125 CU_ASSERT(overlays[0] == geos[2]);
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126 }
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127
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128 CU_pSuite get_geo_suite(void) {
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129 CU_pSuite suite;
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130
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131 suite = CU_add_suite("Suite_geo", NULL, NULL);
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132 CU_ADD_TEST(suite, test_geo_init);
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133 CU_ADD_TEST(suite, test_geo_mark_overlay);
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134
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135 return suite;
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136 }
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137
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138 #endif