static void
update_pixbufs (UmCropArea *area)
{
gint width;
gint height;
GtkAllocation allocation;
gdouble scale;
GdkRGBA color;
guint32 pixel;
gint dest_x, dest_y, dest_width, dest_height;
GtkWidget *widget;
GtkStyleContext *context;
widget = GTK_WIDGET (area);
gtk_widget_get_allocation (widget, &allocation);
context = gtk_widget_get_style_context (widget);
if (area->priv->pixbuf == NULL ||
gdk_pixbuf_get_width (area->priv->pixbuf) != allocation.width ||
gdk_pixbuf_get_height (area->priv->pixbuf) != allocation.height) {
if (area->priv->pixbuf != NULL)
g_object_unref (area->priv->pixbuf);
area->priv->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
gdk_pixbuf_get_has_alpha (area->priv->browse_pixbuf),
8,
allocation.width, allocation.height);
gtk_style_context_get_background_color (context, gtk_style_context_get_state (context), &color);
pixel = (((gint)(color.red * 1.0)) << 16) |
(((gint)(color.green * 1.0)) << 8) |
((gint)(color.blue * 1.0));
gdk_pixbuf_fill (area->priv->pixbuf, pixel);
width = gdk_pixbuf_get_width (area->priv->browse_pixbuf);
height = gdk_pixbuf_get_height (area->priv->browse_pixbuf);
scale = allocation.height / (gdouble)height;
if (scale * width > allocation.width)
scale = allocation.width / (gdouble)width;
dest_width = width * scale;
dest_height = height * scale;
dest_x = (allocation.width - dest_width) / 2;
dest_y = (allocation.height - dest_height) / 2,
gdk_pixbuf_scale (area->priv->browse_pixbuf,
area->priv->pixbuf,
dest_x, dest_y,
dest_width, dest_height,
dest_x, dest_y,
scale, scale,
GDK_INTERP_BILINEAR);
if (area->priv->color_shifted)
g_object_unref (area->priv->color_shifted);
area->priv->color_shifted = gdk_pixbuf_copy (area->priv->pixbuf);
shift_colors (area->priv->color_shifted, -32, -32, -32, 0);
if (area->priv->scale == 0.0) {
area->priv->crop.width = 2 * area->priv->base_width / scale;
area->priv->crop.height = 2 * area->priv->base_height / scale;
area->priv->crop.x = (gdk_pixbuf_get_width (area->priv->browse_pixbuf) - area->priv->crop.width) / 2;
area->priv->crop.y = (gdk_pixbuf_get_height (area->priv->browse_pixbuf) - area->priv->crop.height) / 2;
}
area->priv->scale = scale;
area->priv->image.x = dest_x;
area->priv->image.y = dest_y;
area->priv->image.width = dest_width;
area->priv->image.height = dest_height;
}
}
/*
* update_pixbufs:
* @area: a #UmCropArea
*
* Update the #GdkPixbuf objects inside @area, by darkening the regions outside
* the current crop area.
*/
static void
update_pixbufs (UmCropArea *area)
{
UmCropAreaPrivate *priv = um_crop_area_get_instance_private (area);
gint width;
gint height;
GtkAllocation allocation;
gdouble scale;
gint dest_width, dest_height;
GtkWidget *widget;
widget = GTK_WIDGET (area);
gtk_widget_get_allocation (widget, &allocation);
width = gdk_pixbuf_get_width (priv->browse_pixbuf);
height = gdk_pixbuf_get_height (priv->browse_pixbuf);
scale = allocation.height / (gdouble)height;
if (scale * width > allocation.width)
scale = allocation.width / (gdouble)width;
dest_width = width * scale;
dest_height = height * scale;
if (priv->pixbuf == NULL ||
gdk_pixbuf_get_width (priv->pixbuf) != allocation.width ||
gdk_pixbuf_get_height (priv->pixbuf) != allocation.height) {
if (priv->pixbuf != NULL)
g_object_unref (priv->pixbuf);
priv->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
gdk_pixbuf_get_has_alpha (priv->browse_pixbuf),
8,
dest_width, dest_height);
gdk_pixbuf_fill (priv->pixbuf, 0x0);
gdk_pixbuf_scale (priv->browse_pixbuf,
priv->pixbuf,
0, 0,
dest_width, dest_height,
0, 0,
scale, scale,
GDK_INTERP_BILINEAR);
if (priv->color_shifted)
g_object_unref (priv->color_shifted);
priv->color_shifted = gdk_pixbuf_copy (priv->pixbuf);
shift_colors (priv->color_shifted, -32, -32, -32, 0);
if (priv->scale == 0.0) {
gdouble scale_to_80, scale_to_image, crop_scale;
/* Scale the crop rectangle to 80% of the area, or less to fit the image */
scale_to_80 = MIN ((gdouble)gdk_pixbuf_get_width (priv->pixbuf) * 0.8 / priv->base_width,
(gdouble)gdk_pixbuf_get_height (priv->pixbuf) * 0.8 / priv->base_height);
scale_to_image = MIN ((gdouble)dest_width / priv->base_width,
(gdouble)dest_height / priv->base_height);
crop_scale = MIN (scale_to_80, scale_to_image);
priv->crop.width = crop_scale * priv->base_width / scale;
priv->crop.height = crop_scale * priv->base_height / scale;
priv->crop.x = (gdk_pixbuf_get_width (priv->browse_pixbuf) - priv->crop.width) / 2;
priv->crop.y = (gdk_pixbuf_get_height (priv->browse_pixbuf) - priv->crop.height) / 2;
}
priv->scale = scale;
priv->image.x = (allocation.width - dest_width) / 2;
priv->image.y = (allocation.height - dest_height) / 2;
priv->image.width = dest_width;
priv->image.height = dest_height;
}
}
