148 lines
3.6 KiB
C
148 lines
3.6 KiB
C
#include <X11/Xlib.h>
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#include <X11/Xft/Xft.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <unistd.h>
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#include "config.h"
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Display *display;
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Window window;
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int get_max_len(char *body, XftFont *font, int max_text_width)
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{
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int body_len = strlen(body);
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XGlyphInfo info;
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XftTextExtentsUtf8(display, font, (FcChar8 *)body, body_len, &info);
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if (info.width < max_text_width)
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return body_len;
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int eol = max_text_width / font->max_advance_width;
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info.width = 0;
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while (info.width < max_text_width)
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{
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eol++;
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XftTextExtentsUtf8(display, font, (FcChar8 *)body, eol, &info);
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}
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eol--;
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int temp = eol;
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while (body[eol] != ' ' && eol)
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--eol;
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if (eol == 0)
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return temp;
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else
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return ++eol;
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}
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void expire()
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{
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XEvent event;
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event.type = ButtonPress;
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XSendEvent(display, window, 0, 0, &event);
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XFlush(display);
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}
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int main(int argc, char *argv[])
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{
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if (argc == 1)
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{
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fprintf(stderr, "Usage: herbe body\n");
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exit(EXIT_FAILURE);
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}
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signal(SIGALRM, expire);
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alarm(duration);
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display = XOpenDisplay(NULL);
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if (display == NULL)
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{
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fprintf(stderr, "Cannot open display\n");
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exit(EXIT_FAILURE);
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}
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int screen = DefaultScreen(display);
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Visual *visual = DefaultVisual(display, screen);
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Colormap colormap = DefaultColormap(display, screen);
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int screen_width = DisplayWidth(display, screen);
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int screen_height = DisplayHeight(display, screen);
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XftColor color;
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XSetWindowAttributes attributes;
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attributes.override_redirect = True;
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XftColorAllocName(display, visual, colormap, background_color, &color);
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attributes.background_pixel = color.pixel;
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XftColorAllocName(display, visual, colormap, border_color, &color);
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attributes.border_pixel = color.pixel;
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XftFont *font = XftFontOpenName(display, screen, font_pattern);
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int num_of_lines = 0;
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int max_text_width = width - 2 * padding;
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// TODO replace hard-coded size 100
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char words[100][max_text_width / font->max_advance_width + 2];
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for (int i = 1; i < argc; i++)
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{
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char *body = argv[i];
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for (unsigned int eol = get_max_len(body, font, max_text_width); eol <= strlen(body) && eol; body += eol, num_of_lines++, eol = get_max_len(body, font, max_text_width))
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{
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strncpy(words[num_of_lines], body, eol);
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words[num_of_lines][eol] = '\0';
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}
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}
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unsigned int x = pos_x;
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unsigned int y = pos_y;
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unsigned int text_height = font->ascent - font->descent;
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unsigned int height = (num_of_lines - 1) * line_spacing + num_of_lines * text_height + 2 * padding;
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if (corner == TOP_RIGHT || corner == BOTTOM_RIGHT)
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x = screen_width - width - border_size * 2 - pos_x;
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if (corner == BOTTOM_LEFT || corner == BOTTOM_RIGHT)
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y = screen_height - height - border_size * 2 - pos_y;
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window = XCreateWindow(display, RootWindow(display, screen), x, y, width, height, border_size, DefaultDepth(display, screen), CopyFromParent, visual,
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CWOverrideRedirect | CWBackPixel | CWBorderPixel, &attributes);
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XftDraw *draw = XftDrawCreate(display, window, visual, colormap);
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XftColorAllocName(display, visual, colormap, font_color, &color);
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XSelectInput(display, window, ExposureMask | ButtonPress);
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XMapWindow(display, window);
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XEvent event;
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while (1)
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{
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XNextEvent(display, &event);
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if (event.type == Expose)
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{
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XClearWindow(display, window);
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for (int i = 0; i < num_of_lines; i++)
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XftDrawStringUtf8(draw, &color, font, padding, line_spacing * i + text_height * (i + 1) + padding, (FcChar8 *)words[i], strlen(words[i]));
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}
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if (event.type == ButtonPress)
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break;
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}
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XftDrawDestroy(draw);
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XftColorFree(display, visual, colormap, &color);
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XftFontClose(display, font);
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XCloseDisplay(display);
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return EXIT_SUCCESS;
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}
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