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annotate src/X_main.c @ 6:772511b8b9be

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Cairo specify RGB values in range 0.0 ~ 1.0.
author Thinker K.F. Li <thinker@branda.to>
date Sat, 26 Jul 2008 02:41:00 +0800
parents 9c331ec9e210
children 569f3168ba53
rev   line source
3
164162781a7a Test cairo with Xlib surface
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1 #include <stdio.h>
164162781a7a Test cairo with Xlib surface
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2 #include <unistd.h>
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3 #include <X11/Xlib.h>
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772511b8b9be Cairo specify RGB values in range 0.0 ~ 1.0.
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4 #include <X11/Xutil.h>
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5 #include <cairo.h>
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6
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7 #include <string.h>
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8 #include "shapes.h"
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9
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10 void draw_path(cairo_t *cr, int w, int h) {
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11 shape_t *path;
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12 coord_t coord;
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13
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14 path = sh_path_new("M80 80 c 20 5 -30 20 10 30 l -30 0 z");
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15 memset(coord.aggr_matrix, 0, sizeof(co_aix) * 6);
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16 coord.aggr_matrix[0] = 1;
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17 coord.aggr_matrix[1] = 0.5;
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18 coord.aggr_matrix[4] = 1;
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19 coord.aggr_matrix[5] = 0;
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20 sh_path_transform(path, &coord);
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21 sh_path_draw(path, cr);
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22 }
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23
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24 void drawing(cairo_surface_t *surface, int w, int h) {
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25 cairo_t *cr;
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26
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27 cr = cairo_create(surface);
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28 cairo_set_source_rgb(cr, 0.9, 0.1, 0.1);
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29 draw_path(cr, w, h);
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30 cairo_set_source_rgb(cr, 0.5, 0.9, 0.8);
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31 cairo_move_to(cr, 10, h / 2);
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32 cairo_set_font_size(cr, 48.0);
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33 cairo_text_path(cr, "hello \xe4\xb8\xad\xe6\x96\x87");
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772511b8b9be Cairo specify RGB values in range 0.0 ~ 1.0.
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34 cairo_set_line_width(cr, 2);
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35 cairo_stroke(cr);
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36 }
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37
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38 int
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39 main(int argc, char * const argv[]) {
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40 Display *display;
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41 Window root;
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42 Visual *visual;
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43 int screen;
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44 XSetWindowAttributes wattr;
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45 Window win;
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46 int depth;
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47 cairo_surface_t *surface;
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48 int w, h;
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49 int x, y;
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50 int r;
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51
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52 display = XOpenDisplay(":0.0");
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53 if(display == NULL)
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54 printf("XOpenDisplay\n");
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55 screen = DefaultScreen(display);
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56 root = DefaultRootWindow(display);
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57 visual = DefaultVisual(display, screen);
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58 depth = DefaultDepth(display, screen);
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59 wattr.override_redirect = False;
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60 x = 10;
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61 y = 10;
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62 w = 200;
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63 h = 200;
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64 win = XCreateWindow(display, root,
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65 x, y,
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66 w, h,
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67 1, depth, InputOutput, visual,
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68 CWOverrideRedirect, &wattr);
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69 r = XMapWindow(display, win);
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70
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71 surface = cairo_xlib_surface_create(display, win, visual, w, h);
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72 if(surface == NULL)
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73 printf("cairo_xlib_surface_create\n");
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74
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75 drawing(surface, w, h);
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76
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77 XFlush(display);
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78 sleep(10);
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79
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80 XCloseDisplay(display);
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81 }