static void
gimp_component_editor_visibility_changed (GimpImage *image,
GimpChannelType channel,
GimpComponentEditor *editor)
{
GtkTreeIter iter;
if (gimp_component_editor_get_iter (editor, channel, &iter))
{
gboolean visible = gimp_image_get_component_visible (image, channel);
gtk_list_store_set (GTK_LIST_STORE (editor->model), &iter,
COLUMN_VISIBLE, visible,
-1);
}
}
static void
gimp_component_editor_create_components (GimpComponentEditor *editor)
{
GimpImage *image = GIMP_IMAGE_EDITOR (editor)->image;
gint n_components = 0;
GimpChannelType components[MAX_CHANNELS];
GEnumClass *enum_class;
gint i;
switch (gimp_image_base_type (image))
{
case GIMP_RGB:
n_components = 3;
components[0] = GIMP_RED_CHANNEL;
components[1] = GIMP_GREEN_CHANNEL;
components[2] = GIMP_BLUE_CHANNEL;
break;
case GIMP_GRAY:
n_components = 1;
components[0] = GIMP_GRAY_CHANNEL;
break;
case GIMP_INDEXED:
n_components = 1;
components[0] = GIMP_INDEXED_CHANNEL;
break;
}
if (gimp_image_has_alpha (image))
components[n_components++] = GIMP_ALPHA_CHANNEL;
enum_class = g_type_class_ref (GIMP_TYPE_CHANNEL_TYPE);
for (i = 0; i < n_components; i++)
{
GimpViewRenderer *renderer;
GtkTreeIter iter;
GEnumValue *enum_value;
const gchar *desc;
gboolean visible;
visible = gimp_image_get_component_visible (image, components[i]);
renderer = gimp_view_renderer_new (GIMP_IMAGE_EDITOR (editor)->context,
G_TYPE_FROM_INSTANCE (image),
editor->view_size, 1, FALSE);
gimp_view_renderer_set_viewable (renderer, GIMP_VIEWABLE (image));
gimp_view_renderer_remove_idle (renderer);
GIMP_VIEW_RENDERER_IMAGE (renderer)->channel = components[i];
g_signal_connect (renderer, "update",
G_CALLBACK (gimp_component_editor_renderer_update),
editor);
enum_value = g_enum_get_value (enum_class, components[i]);
desc = gimp_enum_value_get_desc (enum_class, enum_value);
gtk_list_store_append (GTK_LIST_STORE (editor->model), &iter);
gtk_list_store_set (GTK_LIST_STORE (editor->model), &iter,
COLUMN_CHANNEL, components[i],
COLUMN_VISIBLE, visible,
COLUMN_RENDERER, renderer,
COLUMN_NAME, desc,
-1);
g_object_unref (renderer);
if (gimp_image_get_component_active (image, components[i]))
gtk_tree_selection_select_iter (editor->selection, &iter);
}
g_type_class_unref (enum_class);
}
static void
gimp_view_renderer_image_render (GimpViewRenderer *renderer,
GtkWidget *widget)
{
GimpViewRendererImage *rendererimage = GIMP_VIEW_RENDERER_IMAGE (renderer);
GimpImage *image = GIMP_IMAGE (renderer->viewable);
const gchar *icon_name;
/* The conditions checked here are mostly a hack to hide the fact that
* we are creating the channel preview from the image preview and turning
* off visibility of a channel has the side-effect of painting the channel
* preview all black. See bug #459518 for details.
*/
if (rendererimage->channel == -1 ||
(gimp_image_get_component_visible (image, rendererimage->channel) &&
gimp_image_get_component_visible (image, GIMP_ALPHA_CHANNEL)))
{
gint view_width;
gint view_height;
gdouble xres;
gdouble yres;
gboolean scaling_up;
GimpTempBuf *render_buf = NULL;
gimp_image_get_resolution (image, &xres, &yres);
gimp_viewable_calc_preview_size (gimp_image_get_width (image),
gimp_image_get_height (image),
renderer->width,
renderer->height,
renderer->dot_for_dot,
xres,
yres,
&view_width,
&view_height,
&scaling_up);
if (scaling_up)
{
GimpTempBuf *temp_buf;
temp_buf = gimp_viewable_get_new_preview (renderer->viewable,
renderer->context,
gimp_image_get_width (image),
gimp_image_get_height (image));
if (temp_buf)
{
render_buf = gimp_temp_buf_scale (temp_buf,
view_width, view_height);
gimp_temp_buf_unref (temp_buf);
}
}
else
{
render_buf = gimp_viewable_get_new_preview (renderer->viewable,
renderer->context,
view_width,
view_height);
}
if (render_buf)
{
gint render_buf_x = 0;
gint render_buf_y = 0;
gint component_index = -1;
/* xresolution != yresolution */
if (view_width > renderer->width || view_height > renderer->height)
{
GimpTempBuf *temp_buf;
temp_buf = gimp_temp_buf_scale (render_buf,
renderer->width, renderer->height);
gimp_temp_buf_unref (render_buf);
render_buf = temp_buf;
}
if (view_width < renderer->width)
render_buf_x = (renderer->width - view_width) / 2;
if (view_height < renderer->height)
render_buf_y = (renderer->height - view_height) / 2;
if (rendererimage->channel != -1)
component_index =
gimp_image_get_component_index (image, rendererimage->channel);
gimp_view_renderer_render_temp_buf (renderer, widget, render_buf,
render_buf_x, render_buf_y,
component_index,
GIMP_VIEW_BG_CHECKS,
GIMP_VIEW_BG_WHITE);
gimp_temp_buf_unref (render_buf);
return;
}
}
switch (rendererimage->channel)
{
case GIMP_RED_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_RED; break;
case GIMP_GREEN_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_GREEN; break;
case GIMP_BLUE_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_BLUE; break;
case GIMP_GRAY_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_GRAY; break;
case GIMP_INDEXED_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_INDEXED; break;
case GIMP_ALPHA_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_ALPHA; break;
default:
icon_name = gimp_viewable_get_icon_name (renderer->viewable);
break;
}
gimp_view_renderer_render_icon (renderer, widget, icon_name);
}