94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
#include <X11/extensions/Xinerama.h>
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/* global count to prevent repeated error messages */
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int count_error = 0;
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static void
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writemessage(Display *dpy, Window win, int screen)
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{
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int len, line_len, width, height, s_width, s_height, i, j, k, tab_replace, tab_size;
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XGCValues gr_values;
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XFontStruct *fontinfo;
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XColor color, dummy;
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XineramaScreenInfo *xsi;
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GC gc;
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fontinfo = XLoadQueryFont(dpy, font_name);
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if (fontinfo == NULL) {
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if (count_error == 0) {
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fprintf(stderr, "slock: Unable to load font \"%s\"\n", font_name);
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fprintf(stderr, "slock: Try listing fonts with 'slock -f'\n");
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count_error++;
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}
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return;
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}
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tab_size = 8 * XTextWidth(fontinfo, " ", 1);
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XAllocNamedColor(dpy, DefaultColormap(dpy, screen),
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text_color, &color, &dummy);
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gr_values.font = fontinfo->fid;
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gr_values.foreground = color.pixel;
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gc=XCreateGC(dpy,win,GCFont+GCForeground, &gr_values);
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/* To prevent "Uninitialized" warnings. */
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xsi = NULL;
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/*
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* Start formatting and drawing text
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*/
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len = strlen(message);
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/* Max max line length (cut at '\n') */
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line_len = 0;
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k = 0;
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for (i = j = 0; i < len; i++) {
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if (message[i] == '\n') {
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if (i - j > line_len)
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line_len = i - j;
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k++;
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i++;
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j = i;
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}
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}
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/* If there is only one line */
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if (line_len == 0)
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line_len = len;
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if (XineramaIsActive(dpy)) {
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xsi = XineramaQueryScreens(dpy, &i);
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s_width = xsi[0].width;
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s_height = xsi[0].height;
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} else {
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s_width = DisplayWidth(dpy, screen);
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s_height = DisplayHeight(dpy, screen);
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}
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height = s_height*3/7 - (k*20)/3;
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width = (s_width - XTextWidth(fontinfo, message, line_len))/2;
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/* Look for '\n' and print the text between them. */
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for (i = j = k = 0; i <= len; i++) {
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/* i == len is the special case for the last line */
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if (i == len || message[i] == '\n') {
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tab_replace = 0;
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while (message[j] == '\t' && j < i) {
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tab_replace++;
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j++;
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}
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XDrawString(dpy, win, gc, width + tab_size*tab_replace, height + 20*k, message + j, i - j);
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while (i < len && message[i] == '\n') {
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i++;
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j = i;
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k++;
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}
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}
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}
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/* xsi should not be NULL anyway if Xinerama is active, but to be safe */
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if (XineramaIsActive(dpy) && xsi != NULL)
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XFree(xsi);
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} |