sway/wayland/pango.c

74 lines
1.9 KiB
C
Raw Normal View History

#include <cairo/cairo.h>
#include <pango/pangocairo.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
2016-04-17 15:35:22 +00:00
#include <stdbool.h>
#include <stdint.h>
#include "log.h"
2016-09-05 15:52:52 +00:00
PangoLayout *get_pango_layout(cairo_t *cairo, const char *font, const char *text,
int32_t scale, bool markup) {
PangoLayout *layout = pango_cairo_create_layout(cairo);
2016-11-28 13:45:27 +00:00
PangoAttrList *attrs;
2016-04-17 15:35:22 +00:00
if (markup) {
2016-11-28 13:45:27 +00:00
char *buf;
pango_parse_markup(text, -1, 0, &attrs, &buf, NULL, NULL);
pango_layout_set_markup(layout, buf, -1);
2016-11-28 13:45:27 +00:00
free(buf);
2016-04-17 15:35:22 +00:00
} else {
2016-11-28 13:45:27 +00:00
attrs = pango_attr_list_new();
2016-04-17 15:35:22 +00:00
pango_layout_set_text(layout, text, -1);
}
2016-09-08 19:45:21 +00:00
pango_attr_list_insert(attrs, pango_attr_scale_new(scale));
PangoFontDescription *desc = pango_font_description_from_string(font);
pango_layout_set_font_description(layout, desc);
pango_layout_set_single_paragraph_mode(layout, 1);
pango_layout_set_attributes(layout, attrs);
pango_attr_list_unref(attrs);
pango_font_description_free(desc);
return layout;
}
2016-04-17 15:35:22 +00:00
void get_text_size(cairo_t *cairo, const char *font, int *width, int *height,
2016-09-05 15:52:52 +00:00
int32_t scale, bool markup, const char *fmt, ...) {
char *buf = malloc(2048);
va_list args;
va_start(args, fmt);
if (vsnprintf(buf, 2048, fmt, args) >= 2048) {
strcpy(buf, "[buffer overflow]");
}
va_end(args);
2016-09-05 15:52:52 +00:00
PangoLayout *layout = get_pango_layout(cairo, font, buf, scale, markup);
pango_cairo_update_layout(cairo, layout);
pango_layout_get_pixel_size(layout, width, height);
g_object_unref(layout);
free(buf);
}
2016-09-05 15:52:52 +00:00
void pango_printf(cairo_t *cairo, const char *font, int32_t scale, bool markup, const char *fmt, ...) {
char *buf = malloc(2048);
va_list args;
va_start(args, fmt);
if (vsnprintf(buf, 2048, fmt, args) >= 2048) {
strcpy(buf, "[buffer overflow]");
}
va_end(args);
2016-09-05 15:52:52 +00:00
PangoLayout *layout = get_pango_layout(cairo, font, buf, scale, markup);
pango_cairo_update_layout(cairo, layout);
pango_cairo_show_layout(cairo, layout);
g_object_unref(layout);
free(buf);
}