main.c

   1 #include <X11/Xlib.h>
   2 #include <X11/Xft/Xft.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5
   6 #include "config.h"
   7
   8 int main(int argc, char *argv[])
   9 {
  10         Display *display = XOpenDisplay(NULL);
  11         XEvent event;
  12
  13         if (display == NULL)
  14         {
  15                 fprintf(stderr, "Cannot open display\n");
  16                 exit(EXIT_FAILURE);
  17         }
  18
  19         int screen = DefaultScreen(display);
  20
  21         int window_width = DisplayWidth(display, screen);
  22         int window_height = DisplayHeight(display, screen);
  23
  24         XftColor color;
  25
  26         Window root = RootWindow(display, screen);
  27         XSetWindowAttributes attributes;
  28         attributes.override_redirect = True;
  29         XftColorAllocName(display, DefaultVisual(display, screen), DefaultColormap(display, screen), background_color, &color);
  30         attributes.background_pixel = color.pixel;
  31         XftColorAllocName(display, DefaultVisual(display, screen), DefaultColormap(display, screen), border_color, &color);
  32         attributes.border_pixel = color.pixel;
  33
  34         XftFont *font = XftFontOpenName(display, screen, font_style);
  35
  36         unsigned short x = pos_x;
  37         unsigned short y = pos_y;
  38         int height = font->ascent - font->descent + text_padding * 2;
  39         switch (corner) {
  40                 case down_right:
  41                         y = window_height - height - border_size * 2 - pos_y;
  42                 case top_right:
  43                         x = window_width - width - border_size * 2 - pos_x;
  44                         break;
  45                 case down_left:
  46                         y = window_height - height - border_size * 2 - pos_y;
  47         }
  48
  49         Window window = XCreateWindow(
  50                 display, root, x,
  51                 y, width, height, border_size,
  52                 DefaultDepth(display, screen), CopyFromParent,
  53                 DefaultVisual(display, screen),
  54                 CWOverrideRedirect | CWBackPixel | CWBorderPixel, &attributes);
  55
  56         XftDraw *draw = XftDrawCreate(display, window, DefaultVisual(display, screen), DefaultColormap(display, screen));
  57         XftColorAllocName(display, DefaultVisual(display, screen), DefaultColormap(display, screen), font_color, &color);
  58
  59         XSelectInput(display, window, ExposureMask | ButtonPress);
  60
  61         XMapWindow(display, window);
  62
  63         // TODO free xftcolor
  64
  65         while (1)
  66         {
  67                 XNextEvent(display, &event);
  68
  69                 if (event.type == Expose)
  70                 {
  71                         XClearWindow(display, window);
  72                         XftDrawString8(draw, &color, font, text_padding, height - text_padding, (XftChar8 *)argv[1], strlen(argv[1]));
  73                 }
  74                 if (event.type == ButtonPress)
  75                         break;
  76         }
  77
  78         XCloseDisplay(display);
  79         return 0;
  80 }