Mercurial > MadButterfly
annotate src/X_main.c @ 21:83d24300a992
opacity (alpha) channel
author | Thinker K.F. Li <thinker@branda.to> |
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date | Sat, 02 Aug 2008 16:06:53 +0800 |
parents | 74d3d5dc9aaa |
children | 8fcf2d878ecd |
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) { |
12 | 16 redraw_man_t rdman; |
19 | 17 shape_t *path1, *path2; |
18 coord_t *coord1, *coord2; | |
19 paint_t *fill1, *fill2; | |
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20 int i; |
12 | 21 |
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22 redraw_man_init(&rdman, cr); |
19 | 23 coord1 = rdman_coord_new(&rdman, rdman.root_coord); |
24 coord2 = rdman_coord_new(&rdman, rdman.root_coord); | |
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25 |
21 | 26 fill1 = paint_color_new(&rdman, 1, 1, 0, 0.5); |
27 fill2 = paint_color_new(&rdman, 0, 1, 1, 0.5); | |
19 | 28 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 "); |
29 rdman_paint_fill(&rdman, fill1, path1); | |
30 coord1->matrix[0] = 0.8; | |
31 coord1->matrix[1] = 0; | |
32 coord1->matrix[2] = 20; | |
33 coord1->matrix[4] = 0.8; | |
34 coord1->matrix[5] = 20; | |
35 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 "); | |
36 rdman_paint_fill(&rdman, fill2, path2); | |
37 coord2->matrix[0] = -0.8; | |
38 coord2->matrix[1] = 0; | |
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39 coord2->matrix[2] = 180; |
19 | 40 coord2->matrix[4] = 0.8; |
41 coord2->matrix[5] = 20; | |
42 rdman_coord_changed(&rdman, coord1); | |
43 rdman_coord_changed(&rdman, coord2); | |
44 rdman_add_shape(&rdman, (shape_t *)path1, coord1); | |
45 rdman_add_shape(&rdman, (shape_t *)path2, coord2); | |
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46 |
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47 rdman_redraw_all(&rdman); |
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48 |
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49 XFlush(display); |
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50 |
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51 for(i = 0; i < 50; i++) { |
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52 usleep(20000); |
19 | 53 coord1->matrix[2] += 1; |
54 coord1->matrix[5] += 1; | |
55 coord2->matrix[2] -= 1; | |
56 coord2->matrix[5] += 1; | |
21 | 57 paint_color_set(fill1, 1, 1, (i/25) & 0x1, 0.5); |
58 paint_color_set(fill2, (i/25) & 0x1, 1, 1, 0.5); | |
19 | 59 rdman_paint_changed(&rdman, fill1); |
60 rdman_paint_changed(&rdman, fill2); | |
61 rdman_coord_changed(&rdman, coord1); | |
62 rdman_coord_changed(&rdman, coord2); | |
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63 rdman_redraw_changed(&rdman); |
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64 XFlush(display); |
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65 } |
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66 |
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67 for(i = 0; i < 5; i++) { |
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68 usleep(500000); |
21 | 69 paint_color_set(fill1, 1, i % 2, 0, 0.5); |
70 paint_color_set(fill2, 0, i % 2, 1, 0.5); | |
19 | 71 rdman_paint_changed(&rdman, fill1); |
72 rdman_paint_changed(&rdman, fill2); | |
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73 rdman_redraw_changed(&rdman); |
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74 XFlush(display); |
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75 } |
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76 |
19 | 77 fill1->free(fill1); |
78 fill2->free(fill2); | |
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79 redraw_man_destroy(&rdman); |
19 | 80 sh_path_free(path1); |
81 sh_path_free(path2); | |
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82 } |
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83 |
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84 void drawing(cairo_surface_t *surface, int w, int h) { |
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85 cairo_t *cr; |
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86 |
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87 cr = cairo_create(surface); |
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88 cairo_set_source_rgb(cr, 0, 0, 0); |
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89 cairo_paint(cr); |
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90 cairo_set_source_rgb(cr, 0.9, 0.1, 0.1); |
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91 draw_path(cr, w, h); |
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92 cairo_set_source_rgb(cr, 0.5, 0.9, 0.8); |
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93 cairo_move_to(cr, 10, h / 2); |
12 | 94 cairo_set_font_size(cr, 36.0); |
95 cairo_text_path(cr, "hello \xe6\xbc\xa2\xe5\xad\x97"); | |
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96 cairo_set_line_width(cr, 2); |
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97 cairo_stroke(cr); |
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98 } |
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99 |
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100 int |
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101 main(int argc, char * const argv[]) { |
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102 Window root; |
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103 Visual *visual; |
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104 int screen; |
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105 XSetWindowAttributes wattr; |
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106 Window win; |
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107 int depth; |
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108 cairo_surface_t *surface; |
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109 int w, h; |
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110 int x, y; |
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111 int r; |
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112 |
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113 display = XOpenDisplay(":0.0"); |
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114 if(display == NULL) |
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115 printf("XOpenDisplay\n"); |
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116 screen = DefaultScreen(display); |
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117 root = DefaultRootWindow(display); |
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118 visual = DefaultVisual(display, screen); |
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119 depth = DefaultDepth(display, screen); |
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120 wattr.override_redirect = False; |
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121 x = 10; |
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122 y = 10; |
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123 w = 200; |
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124 h = 200; |
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125 win = XCreateWindow(display, root, |
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126 x, y, |
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127 w, h, |
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128 1, depth, InputOutput, visual, |
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129 CWOverrideRedirect, &wattr); |
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130 r = XMapWindow(display, win); |
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131 |
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132 surface = cairo_xlib_surface_create(display, win, visual, w, h); |
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133 if(surface == NULL) |
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134 printf("cairo_xlib_surface_create\n"); |
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135 |
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136 drawing(surface, w, h); |
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137 |
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138 XFlush(display); |
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139 sleep(10); |
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140 |
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141 XCloseDisplay(display); |
10 | 142 return 0; |
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143 } |