static int
gtk_icon_helper_paintable_get_intrinsic_height (GdkPaintable *paintable)
{
GtkIconHelper *self = GTK_ICON_HELPER (paintable);
return gtk_icon_helper_get_size (self);
}
static void
gtk_icon_helper_finalize (GObject *object)
{
GtkIconHelper *self = GTK_ICON_HELPER (object);
_gtk_icon_helper_clear (self);
G_OBJECT_CLASS (_gtk_icon_helper_parent_class)->finalize (object);
}
static void
gtk_icon_helper_style_changed (GtkCssGadget *gadget,
GtkCssStyleChange *change)
{
gtk_icon_helper_invalidate_for_change (GTK_ICON_HELPER (gadget), change);
if (!GTK_IS_CSS_TRANSIENT_NODE (gtk_css_gadget_get_node (gadget)))
GTK_CSS_GADGET_CLASS (gtk_icon_helper_parent_class)->style_changed (gadget, change);
}
static void
gtk_icon_helper_finalize (GObject *object)
{
GtkIconHelper *self = GTK_ICON_HELPER (object);
_gtk_icon_helper_clear (self);
g_signal_handlers_disconnect_by_func (self->owner, G_CALLBACK (gtk_icon_helper_invalidate), self);
gtk_image_definition_unref (self->def);
G_OBJECT_CLASS (gtk_icon_helper_parent_class)->finalize (object);
}
static GdkPaintable *
gtk_icon_helper_paintable_get_current_image (GdkPaintable *paintable)
{
GtkIconHelper *self = GTK_ICON_HELPER (paintable);
gtk_icon_helper_ensure_paintable (self);
if (self->paintable == NULL)
return NULL;
return gtk_icon_helper_paintable_get_current_image (self->paintable);
}
static void
gtk_icon_helper_constructed (GObject *object)
{
GtkIconHelper *self = GTK_ICON_HELPER (object);
GtkWidget *widget;
widget = gtk_css_gadget_get_owner (GTK_CSS_GADGET (self));
g_signal_connect_swapped (widget, "direction-changed", G_CALLBACK (gtk_icon_helper_invalidate), self);
g_signal_connect_swapped (widget, "notify::scale-factor", G_CALLBACK (gtk_icon_helper_invalidate), self);
G_OBJECT_CLASS (gtk_icon_helper_parent_class)->constructed (object);
}
static void
gtk_icon_helper_finalize (GObject *object)
{
GtkIconHelper *self = GTK_ICON_HELPER (object);
GtkWidget *widget;
widget = gtk_css_gadget_get_owner (GTK_CSS_GADGET (self));
g_signal_handlers_disconnect_by_func (widget, G_CALLBACK (gtk_icon_helper_invalidate), self);
_gtk_icon_helper_clear (self);
gtk_image_definition_unref (self->priv->def);
G_OBJECT_CLASS (gtk_icon_helper_parent_class)->finalize (object);
}
static gboolean
gtk_icon_helper_draw (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height)
{
GtkIconHelper *self = GTK_ICON_HELPER (gadget);
int icon_width, icon_height;
_gtk_icon_helper_get_size (self, &icon_width, &icon_height);
_gtk_icon_helper_draw (self,
cr,
x + (width - icon_width) / 2,
y + (height - icon_height) / 2);
return FALSE;
}
static void
gtk_icon_helper_get_preferred_size (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkIconHelper *self = GTK_ICON_HELPER (gadget);
int icon_width, icon_height;
_gtk_icon_helper_get_size (self, &icon_width, &icon_height);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
*minimum = *natural = icon_width;
else
*minimum = *natural = icon_height;
if (minimum_baseline)
*minimum_baseline = 0;
if (natural_baseline)
*natural_baseline = 0;
}
static void
gtk_icon_helper_paintable_snapshot (GdkPaintable *paintable,
GdkSnapshot *snapshot,
double width,
double height)
{
GtkIconHelper *self = GTK_ICON_HELPER (paintable);
GtkCssStyle *style;
style = gtk_css_node_get_style (self->node);
gtk_icon_helper_ensure_paintable (self);
if (self->paintable == NULL)
return;
switch (gtk_image_definition_get_storage_type (self->def))
{
case GTK_IMAGE_ICON_NAME:
case GTK_IMAGE_GICON:
{
double x, y, w, h;
/* Never scale up icons. */
w = gdk_paintable_get_intrinsic_width (self->paintable);
h = gdk_paintable_get_intrinsic_height (self->paintable);
w = MIN (w, width);
h = MIN (h, height);
x = (width - w) / 2;
y = (height - h) / 2;
gtk_snapshot_offset (snapshot, x, y);
gtk_css_style_snapshot_icon_paintable (style,
snapshot,
self->paintable,
w, h,
self->texture_is_symbolic);
gtk_snapshot_offset (snapshot, -x, -y);
}
break;
case GTK_IMAGE_PAINTABLE:
case GTK_IMAGE_EMPTY:
default:
{
double image_ratio = (double) width / height;
double ratio;
double x, y, w, h;
if (self->paintable == NULL)
break;
ratio = gdk_paintable_get_intrinsic_aspect_ratio (self->paintable);
if (ratio == 0)
{
w = width;
h = height;
}
else if (ratio > image_ratio)
{
w = width;
h = width / ratio;
}
else
{
w = height * ratio;
h = height;
}
x = floor (width - ceil (w)) / 2;
y = floor (height - ceil (h)) / 2;
gtk_snapshot_offset (snapshot, x, y);
gtk_css_style_snapshot_icon_paintable (style,
snapshot,
self->paintable,
w, h,
self->texture_is_symbolic);
gtk_snapshot_offset (snapshot, -x, -y);
}
break;
}
}
