2 files changed, 70 insertions, 0 deletions
diff --git a/common/meson.build b/common/meson.build
index 01736ca6..4ad47077 100644
--- a/common/meson.build
+++ b/common/meson.build
@@ -1,5 +1,7 @@
 deps = [
 	cairo,
+	pango,
+	pangocairo,
 	wlroots
 ]
 
@@ -14,6 +16,7 @@ lib_sway_common = static_library(
 		'ipc-client.c',
 		'log.c',
 		'list.c',
+		'pango.c',
 		'readline.c',
 		'stringop.c',
 		'util.c'
diff --git a/common/pango.c b/common/pango.c
new file mode 100644
index 00000000..212d96cf
--- /dev/null
+++ b/common/pango.c
@@ -0,0 +1,67 @@
+#include <cairo/cairo.h>
+#include <pango/pangocairo.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+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);
+	PangoAttrList *attrs;
+	if (markup) {
+		char *buf;
+		pango_parse_markup(text, -1, 0, &attrs, &buf, NULL, NULL);
+		pango_layout_set_markup(layout, buf, -1);
+		free(buf);
+	} else {
+		attrs = pango_attr_list_new();
+		pango_layout_set_text(layout, text, -1);
+	}
+	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;
+}
+
+void get_text_size(cairo_t *cairo, const char *font, int *width, int *height,
+		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);
+
+	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);
+}
+
+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);
+
+	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);
+}