Cppcheck report - cafe-control-center (cppcheck 2.12.0-1): libslab/cafe-utils.c

#include "cafe-utils.h"

#include <string.h>

gboolean
load_image_by_id (CtkImage *image, CtkIconSize size, const gchar *image_id)
{
	cairo_surface_t *surface;
	gint width;
	gint height;
	gint scale_factor;

	CtkIconTheme *icon_theme;
<--- The scope of the variable 'icon_theme' can be reduced. [+]
The scope of the variable 'icon_theme' can be reduced. Warning: Be careful when fixing this message, especially when there are inner loops. Here is an example where cppcheck will write that the scope for 'i' can be reduced:
void f(int x)
{
    int i = 0;
    if (x) {
        // it's safe to move 'int i = 0;' here
        for (int n = 0; n < 10; ++n) {
            // it is possible but not safe to move 'int i = 0;' here
            do_something(&i);
        }
    }
}
When you see this message it is always safe to reduce the variable scope 1 level.

	gchar *id;

	gboolean icon_exists;

	if (!image_id)
		return FALSE;

	id = g_strdup (image_id);
	scale_factor = ctk_widget_get_scale_factor (CTK_WIDGET (image));

	ctk_icon_size_lookup (size, &width, &height);
	ctk_image_set_pixel_size (image, width);

	if (g_path_is_absolute (id))
	{
		GdkPixbuf *pixbuf;

		pixbuf = gdk_pixbuf_new_from_file_at_size (id, width * scale_factor, height * scale_factor, NULL);

		icon_exists = (pixbuf != NULL);

		if (icon_exists)
		{
			surface = cdk_cairo_surface_create_from_pixbuf (pixbuf, scale_factor, NULL);
			ctk_image_set_from_surface (image, surface);

			cairo_surface_destroy (surface);
			g_object_unref (pixbuf);
		}
		else
			ctk_image_set_from_icon_name (image, "image-missing", size);
	}
	else
	{
		if (		/* file extensions are not copesetic with loading by "name" */
			g_str_has_suffix (id, ".png") ||
			g_str_has_suffix (id, ".svg") ||
			g_str_has_suffix (id, ".xpm")
		   )

			id[strlen (id) - 4] = '\0';

		if (ctk_widget_has_screen (CTK_WIDGET (image)))
			icon_theme =
				ctk_icon_theme_get_for_screen (ctk_widget_get_screen (CTK_WIDGET
					(image)));
		else
			icon_theme = ctk_icon_theme_get_default ();

		surface = ctk_icon_theme_load_surface (icon_theme, id,
		                                       width, scale_factor,
		                                       NULL,
		                                       CTK_ICON_LOOKUP_FORCE_SIZE,
		                                       NULL);
		icon_exists = (surface != NULL);
		if (icon_exists) {
			ctk_image_set_from_surface (image, surface);
			cairo_surface_destroy (surface);
		}
		else
			ctk_image_set_from_icon_name (image, "image-missing", size);

	}

	g_free (id);

	return icon_exists;
}