68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
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#include <cairo/cairo.h>
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#include <pango/pangocairo.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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PangoLayout *get_pango_layout(cairo_t *cairo, const char *font,
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const char *text, int32_t scale, bool markup) {
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PangoLayout *layout = pango_cairo_create_layout(cairo);
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PangoAttrList *attrs;
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if (markup) {
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char *buf;
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pango_parse_markup(text, -1, 0, &attrs, &buf, NULL, NULL);
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pango_layout_set_markup(layout, buf, -1);
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free(buf);
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} else {
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attrs = pango_attr_list_new();
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pango_layout_set_text(layout, text, -1);
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}
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pango_attr_list_insert(attrs, pango_attr_scale_new(scale));
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PangoFontDescription *desc = pango_font_description_from_string(font);
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pango_layout_set_font_description(layout, desc);
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pango_layout_set_single_paragraph_mode(layout, 1);
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pango_layout_set_attributes(layout, attrs);
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pango_attr_list_unref(attrs);
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pango_font_description_free(desc);
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return layout;
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}
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void get_text_size(cairo_t *cairo, const char *font, int *width, int *height,
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int32_t scale, bool markup, const char *fmt, ...) {
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char *buf = malloc(2048);
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va_list args;
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va_start(args, fmt);
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if (vsnprintf(buf, 2048, fmt, args) >= 2048) {
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strcpy(buf, "[buffer overflow]");
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}
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va_end(args);
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PangoLayout *layout = get_pango_layout(cairo, font, buf, scale, markup);
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pango_cairo_update_layout(cairo, layout);
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pango_layout_get_pixel_size(layout, width, height);
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g_object_unref(layout);
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free(buf);
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}
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void pango_printf(cairo_t *cairo, const char *font,
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int32_t scale, bool markup, const char *fmt, ...) {
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char *buf = malloc(2048);
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va_list args;
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va_start(args, fmt);
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if (vsnprintf(buf, 2048, fmt, args) >= 2048) {
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strcpy(buf, "[buffer overflow]");
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}
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va_end(args);
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PangoLayout *layout = get_pango_layout(cairo, font, buf, scale, markup);
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pango_cairo_update_layout(cairo, layout);
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pango_cairo_show_layout(cairo, layout);
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g_object_unref(layout);
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free(buf);
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}
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