static int
gtk_css_image_fallback_get_height (GtkCssImage *image)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
if (fallback->used < 0)
return 0;
return _gtk_css_image_get_height (fallback->images[fallback->used]);
}
static double
gtk_css_image_fallback_get_aspect_ratio (GtkCssImage *image)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
if (fallback->used < 0)
return 0;
return _gtk_css_image_get_aspect_ratio (fallback->images[fallback->used]);
}
static GtkCssImage *
gtk_css_image_fallback_compute (GtkCssImage *image,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
GtkCssImageFallback *copy;
int i;
if (fallback->used < 0)
{
copy = g_object_new (_gtk_css_image_fallback_get_type (), NULL);
copy->n_images = fallback->n_images;
copy->images = g_new (GtkCssImage *, fallback->n_images);
for (i = 0; i < fallback->n_images; i++)
{
copy->images[i] = _gtk_css_image_compute (fallback->images[i],
property_id,
provider,
style,
parent_style);
/* Assume that failing to load an image leaves a 0x0 surface image */
if (GTK_IS_CSS_IMAGE_SURFACE (copy->images[i]) &&
_gtk_css_image_get_width (copy->images[i]) == 0 &&
_gtk_css_image_get_height (copy->images[i]) == 0)
continue;
if (copy->used < 0)
copy->used = i;
}
if (fallback->color)
copy->color = _gtk_css_value_compute (fallback->color,
property_id,
provider,
style,
parent_style);
else
copy->color = NULL;
return GTK_CSS_IMAGE (copy);
}
static void
gtk_css_image_fallback_dispose (GObject *object)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (object);
int i;
for (i = 0; i < fallback->n_images; i++)
g_object_unref (fallback->images[i]);
g_free (fallback->images);
fallback->images = NULL;
if (fallback->color)
{
_gtk_css_value_unref (fallback->color);
fallback->color = NULL;
}
G_OBJECT_CLASS (_gtk_css_image_fallback_parent_class)->dispose (object);
}
static GtkCssImage *
gtk_css_image_fallback_compute (GtkCssImage *image,
guint property_id,
GtkStyleProvider *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
GtkCssImageFallback *copy;
int i;
if (fallback->used < 0)
{
copy = g_object_new (_gtk_css_image_fallback_get_type (), NULL);
copy->n_images = fallback->n_images;
copy->images = g_new (GtkCssImage *, fallback->n_images);
for (i = 0; i < fallback->n_images; i++)
{
copy->images[i] = _gtk_css_image_compute (fallback->images[i],
property_id,
provider,
style,
parent_style);
if (gtk_css_image_is_invalid (copy->images[i]))
continue;
if (copy->used < 0)
copy->used = i;
}
if (fallback->color)
copy->color = _gtk_css_value_compute (fallback->color,
property_id,
provider,
style,
parent_style);
else
copy->color = NULL;
return GTK_CSS_IMAGE (copy);
}
static void
gtk_css_image_fallback_draw (GtkCssImage *image,
cairo_t *cr,
double width,
double height)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
if (fallback->used < 0)
{
if (fallback->color)
gdk_cairo_set_source_rgba (cr, _gtk_css_rgba_value_get_rgba (fallback->color));
else
cairo_set_source_rgb (cr, 1, 0, 9);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
}
else
_gtk_css_image_draw (fallback->images[fallback->used], cr, width, height);
}
static void
gtk_css_image_fallback_print (GtkCssImage *image,
GString *string)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
int i;
g_string_append (string, "image(");
for (i = 0; i < fallback->n_images; i++)
{
if (i > 0)
g_string_append (string, ",");
_gtk_css_image_print (fallback->images[i], string);
}
if (fallback->color)
{
g_string_append (string, ",");
_gtk_css_value_print (fallback->color, string);
}
g_string_append (string, ")");
}
static void
gtk_css_image_fallback_snapshot (GtkCssImage *image,
GtkSnapshot *snapshot,
double width,
double height)
{
GtkCssImageFallback *fallback = GTK_CSS_IMAGE_FALLBACK (image);
if (fallback->used < 0)
{
GdkRGBA red = { 1, 0, 0, 1 };
const GdkRGBA *color;
if (fallback->color)
color = _gtk_css_rgba_value_get_rgba (fallback->color);
else
color = &red;
gtk_snapshot_append_color (snapshot, color, &GRAPHENE_RECT_INIT (0, 0, width, height));
}
else
gtk_css_image_snapshot (fallback->images[fallback->used], snapshot, width, height);
}