Mercurial > MadButterfly
annotate src/X_main.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> |
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date | Sun, 03 Aug 2008 02:08:31 +0800 |
parents | 56f592f56ff7 |
children | d50f33040de6 |
rev | line source |
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Test cairo with Xlib surface
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1 #include <stdio.h> |
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2 #include <unistd.h> |
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3 #include <X11/Xlib.h> |
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4 #include <X11/Xutil.h> |
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5 #include <cairo.h> |
10 | 6 #include <cairo-xlib.h> |
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7 |
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8 #include <string.h> |
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9 #include "shapes.h" |
12 | 10 #include "redraw_man.h" |
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11 #include "paint.h" |
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12 |
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13 Display *display; |
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14 |
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15 void draw_path(cairo_t *cr, int w, int h) { |
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16 cairo_t *tmpcr; |
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17 cairo_surface_t *tmpsuf; |
12 | 18 redraw_man_t rdman; |
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19 shape_t *path1, *path2, *path3; |
19 | 20 coord_t *coord1, *coord2; |
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21 paint_t *fill1, *fill2, *fill3; |
22 | 22 paint_t *stroke; |
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23 grad_stop_t fill3_stops[3]; |
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24 int i; |
12 | 25 |
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26 tmpsuf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h); |
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27 tmpcr = cairo_create(tmpsuf); |
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28 cairo_set_source_surface(cr, tmpsuf, 0, 0); |
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29 redraw_man_init(&rdman, tmpcr, cr); |
19 | 30 coord1 = rdman_coord_new(&rdman, rdman.root_coord); |
31 coord2 = rdman_coord_new(&rdman, rdman.root_coord); | |
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32 |
21 | 33 fill1 = paint_color_new(&rdman, 1, 1, 0, 0.5); |
34 fill2 = paint_color_new(&rdman, 0, 1, 1, 0.5); | |
22 | 35 stroke = paint_color_new(&rdman, 0.4, 0.4, 0.4, 1); |
19 | 36 path1 = sh_path_new("M 22,89.36218 C -34,-0.63782 39,-9.637817 82,12.36218 C 125,34.36218 142,136.36218 142,136.36218 C 100.66667,125.36218 74.26756,123.42795 22,89.36218 z "); |
37 rdman_paint_fill(&rdman, fill1, path1); | |
22 | 38 rdman_paint_stroke(&rdman, stroke, path1); |
19 | 39 coord1->matrix[0] = 0.8; |
40 coord1->matrix[1] = 0; | |
41 coord1->matrix[2] = 20; | |
42 coord1->matrix[4] = 0.8; | |
43 coord1->matrix[5] = 20; | |
44 path2 = sh_path_new("M 22,89.36218 C -34,-0.63782 39,-9.637817 82,12.36218 C 125,34.36218 142,136.36218 142,136.36218 C 100.66667,125.36218 74.26756,123.42795 22,89.36218 z "); | |
45 rdman_paint_fill(&rdman, fill2, path2); | |
22 | 46 rdman_paint_stroke(&rdman, stroke, path2); |
19 | 47 coord2->matrix[0] = -0.8; |
48 coord2->matrix[1] = 0; | |
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49 coord2->matrix[2] = 180; |
19 | 50 coord2->matrix[4] = 0.8; |
51 coord2->matrix[5] = 20; | |
52 rdman_coord_changed(&rdman, coord1); | |
53 rdman_coord_changed(&rdman, coord2); | |
54 rdman_add_shape(&rdman, (shape_t *)path1, coord1); | |
55 rdman_add_shape(&rdman, (shape_t *)path2, coord2); | |
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56 |
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57 |
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58 fill3 = paint_linear_new(&rdman, 50, 50, 150, 150); |
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59 grad_stop_init(fill3_stops, 0, 1, 0, 0, 0.5); |
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60 grad_stop_init(fill3_stops + 1, 0.5, 0, 1, 0, 0.5); |
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61 grad_stop_init(fill3_stops + 2, 1, 0, 0, 1, 0.5); |
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62 paint_linear_stops(fill3, 3, fill3_stops); |
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63 path3 = sh_path_new("M 50,50 L 50,150 L 150,150 L 150,50 z"); |
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64 rdman_paint_fill(&rdman, fill3, path3); |
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65 rdman_add_shape(&rdman, (shape_t *)path3, rdman.root_coord); |
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66 |
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67 rdman_redraw_all(&rdman); |
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68 |
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69 XFlush(display); |
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70 |
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71 for(i = 0; i < 50; i++) { |
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72 usleep(20000); |
19 | 73 coord1->matrix[2] += 1; |
74 coord1->matrix[5] += 1; | |
75 coord2->matrix[2] -= 1; | |
76 coord2->matrix[5] += 1; | |
21 | 77 paint_color_set(fill1, 1, 1, (i/25) & 0x1, 0.5); |
78 paint_color_set(fill2, (i/25) & 0x1, 1, 1, 0.5); | |
19 | 79 rdman_paint_changed(&rdman, fill1); |
80 rdman_paint_changed(&rdman, fill2); | |
81 rdman_coord_changed(&rdman, coord1); | |
82 rdman_coord_changed(&rdman, coord2); | |
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83 rdman_redraw_changed(&rdman); |
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84 XFlush(display); |
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85 } |
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86 |
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87 for(i = 0; i < 5; i++) { |
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88 usleep(500000); |
21 | 89 paint_color_set(fill1, 1, i % 2, 0, 0.5); |
90 paint_color_set(fill2, 0, i % 2, 1, 0.5); | |
19 | 91 rdman_paint_changed(&rdman, fill1); |
92 rdman_paint_changed(&rdman, fill2); | |
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93 rdman_redraw_changed(&rdman); |
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94 XFlush(display); |
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95 } |
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96 |
19 | 97 fill1->free(fill1); |
98 fill2->free(fill2); | |
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99 redraw_man_destroy(&rdman); |
19 | 100 sh_path_free(path1); |
101 sh_path_free(path2); | |
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102 cairo_destroy(tmpcr); |
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103 cairo_surface_destroy(tmpsuf); |
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104 } |
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105 |
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106 void drawing(cairo_surface_t *surface, int w, int h) { |
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107 cairo_t *cr; |
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108 |
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109 cr = cairo_create(surface); |
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110 cairo_set_source_rgb(cr, 0, 0, 0); |
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111 cairo_paint(cr); |
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112 cairo_set_source_rgb(cr, 0.9, 0.1, 0.1); |
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113 draw_path(cr, w, h); |
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114 cairo_set_source_rgb(cr, 0.5, 0.9, 0.8); |
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115 cairo_move_to(cr, 10, h / 2); |
12 | 116 cairo_set_font_size(cr, 36.0); |
117 cairo_text_path(cr, "hello \xe6\xbc\xa2\xe5\xad\x97"); | |
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118 cairo_set_line_width(cr, 2); |
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119 cairo_stroke(cr); |
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120 } |
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121 |
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122 int |
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123 main(int argc, char * const argv[]) { |
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124 Window root; |
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125 Visual *visual; |
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126 int screen; |
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127 XSetWindowAttributes wattr; |
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128 Window win; |
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129 int depth; |
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130 cairo_surface_t *surface; |
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131 int w, h; |
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132 int x, y; |
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133 int r; |
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134 |
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135 display = XOpenDisplay(":0.0"); |
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136 if(display == NULL) |
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137 printf("XOpenDisplay\n"); |
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138 screen = DefaultScreen(display); |
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139 root = DefaultRootWindow(display); |
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140 visual = DefaultVisual(display, screen); |
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141 depth = DefaultDepth(display, screen); |
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142 wattr.override_redirect = False; |
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143 x = 10; |
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144 y = 10; |
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145 w = 200; |
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146 h = 200; |
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147 win = XCreateWindow(display, root, |
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148 x, y, |
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149 w, h, |
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150 1, depth, InputOutput, visual, |
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151 CWOverrideRedirect, &wattr); |
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152 r = XMapWindow(display, win); |
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153 |
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154 surface = cairo_xlib_surface_create(display, win, visual, w, h); |
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155 if(surface == NULL) |
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156 printf("cairo_xlib_surface_create\n"); |
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157 |
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158 drawing(surface, w, h); |
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159 |
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160 XFlush(display); |
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161 sleep(10); |
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162 |
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163 XCloseDisplay(display); |
10 | 164 return 0; |
3
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165 } |