Make the remote button text themeable

1 files changed, 28 insertions, 19 deletions

diff --git a/rcm-client-receive.c b/rcm-client-receive.c
index c31df5c..710c8c4 100644
--- a/rcm-client-receive.c
+++ b/rcm-client-receive.c
@@ -72,7 +72,6 @@ button_press_event_cb(GtkButton *button, gpointer user_data)
 #define REMOTE_BUTTON_WIDTH 64
 #define REMOTE_BUTTON_HEIGHT 64
 #define REMOTE_BUTTON_PADDING 2
-#define REMOTE_BUTTON_FONT_SIZE 15
 
 static void
 create_button_img(GtkWidget *button, const char *keycode)
@@ -80,14 +79,15 @@ create_button_img(GtkWidget *button, const char *keycode)
 	struct linux_input_keycode *lik;
 	cairo_surface_t *surface;
 	cairo_t *ct;
-	cairo_text_extents_t text_extents;
-	cairo_font_extents_t font_extents;
+	PangoLayout *layout;
+	PangoFontDescription *font_description;
 	GtkWidget *img;
 	const char *label = keycode;
 	double x, y;
 	double scale_x, scale_y;
 	double scale = 1.0;
-	GdkRGBA color;
+	GdkRGBA *color;
+	gint pw, ph;
 
 	for (lik = &linux_input_keycodes[0]; lik->name; lik++)
 		if (keycode && !strcmp(lik->name, keycode))
@@ -105,25 +105,34 @@ create_button_img(GtkWidget *button, const char *keycode)
 					     REMOTE_BUTTON_WIDTH,
 					     REMOTE_BUTTON_HEIGHT);
 	ct = cairo_create(surface);
-	/* FIXME: Make this themeable */
-	cairo_set_font_size(ct, REMOTE_BUTTON_FONT_SIZE);
-	cairo_text_extents(ct, label, &text_extents);
-	/* font extents so the vertial alignment is the same for all buttons */
-	cairo_font_extents(ct, &font_extents);
-	scale_x = (REMOTE_BUTTON_WIDTH  - REMOTE_BUTTON_PADDING * 2) / text_extents.width;
-	scale_y = (REMOTE_BUTTON_HEIGHT - REMOTE_BUTTON_PADDING * 2) / font_extents.height;
+	layout = pango_cairo_create_layout(ct);
+
+	gtk_style_context_get(gtk_widget_get_style_context(button),
+			      gtk_widget_get_state_flags(button),
+			      GTK_STYLE_PROPERTY_FONT, &font_description,
+			      GTK_STYLE_PROPERTY_COLOR, &color,
+			      NULL);
+
+	pango_layout_set_font_description(layout, font_description);
+	pango_font_description_free(font_description);
+
+	gdk_cairo_set_source_rgba(ct, color);
+	gdk_rgba_free(color);
+
+	pango_layout_set_text(layout, label, -1);
+
+	pango_layout_get_pixel_size(layout, &pw, &ph);
+
+	scale_x = ((float)REMOTE_BUTTON_WIDTH  - (float)REMOTE_BUTTON_PADDING * 2.0f) / (float)pw;
+	scale_y = ((float)REMOTE_BUTTON_HEIGHT - (float)REMOTE_BUTTON_PADDING * 2.0f) / (float)ph;
 	scale = scale_x < scale ? scale_x : scale;
 	scale = scale_y < scale ? scale_y : scale;
-	x = REMOTE_BUTTON_WIDTH  / 2 - (text_extents.x_bearing + text_extents.width / 2.0) * scale;
-	y = REMOTE_BUTTON_HEIGHT / 2 - (font_extents.descent - font_extents.height / 2.0) * scale;
+	x = (float)REMOTE_BUTTON_WIDTH  / 2.0f - ((float)pw / 2.0f) * scale;
+	y = (float)REMOTE_BUTTON_HEIGHT / 2.0f - ((float)ph / 2.0f) * scale;
 	cairo_move_to(ct, x, y);
 	cairo_scale(ct, scale, scale);
-	gtk_style_context_get_color(gtk_widget_get_style_context(button),
-				    gtk_widget_get_state_flags(button),
-				    &color);
-	gdk_cairo_set_source_rgba(ct, &color);
-	cairo_show_text(ct, label);
-
+	pango_cairo_show_layout(ct, layout);
+	g_object_unref(layout);
 	cairo_destroy(ct);
 	lik->cs = surface;