static void
gimp_histogram_editor_set_image (GimpImageEditor *image_editor,
GimpImage *image)
{
GimpHistogramEditor *editor = GIMP_HISTOGRAM_EDITOR (image_editor);
GimpHistogramView *view = GIMP_HISTOGRAM_BOX (editor->box)->view;
if (image_editor->image)
{
if (editor->idle_id)
{
g_source_remove (editor->idle_id);
editor->idle_id = 0;
}
g_signal_handlers_disconnect_by_func (image_editor->image,
gimp_histogram_editor_layer_changed,
editor);
g_signal_handlers_disconnect_by_func (image_editor->image,
gimp_histogram_editor_menu_update,
editor);
if (editor->histogram)
{
gimp_histogram_unref (editor->histogram);
editor->histogram = NULL;
gimp_histogram_view_set_histogram (view, NULL);
}
if (editor->bg_histogram)
{
gimp_histogram_unref (editor->bg_histogram);
editor->bg_histogram = NULL;
gimp_histogram_view_set_background (view, NULL);
}
}
GIMP_IMAGE_EDITOR_CLASS (parent_class)->set_image (image_editor, image);
if (image)
{
editor->histogram = gimp_histogram_new ();
gimp_histogram_view_set_histogram (view, editor->histogram);
g_signal_connect_object (image, "mode-changed",
G_CALLBACK (gimp_histogram_editor_menu_update),
editor, G_CONNECT_SWAPPED);
g_signal_connect_object (image, "active-layer-changed",
G_CALLBACK (gimp_histogram_editor_layer_changed),
editor, 0);
g_signal_connect_object (image, "mask-changed",
G_CALLBACK (gimp_histogram_editor_update),
editor, G_CONNECT_SWAPPED);
}
gimp_histogram_editor_layer_changed (image, editor);
}
static void
gimp_levels_tool_init (GimpLevelsTool *tool)
{
GimpImageMapTool *im_tool = GIMP_IMAGE_MAP_TOOL (tool);
tool->lut = gimp_lut_new ();
tool->histogram = gimp_histogram_new ();
tool->active_picker = NULL;
im_tool->apply_func = (GimpImageMapApplyFunc) gimp_lut_process;
im_tool->apply_data = tool->lut;
}
static gboolean
gimp_levels_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpLevelsTool *l_tool = GIMP_LEVELS_TOOL (tool);
GimpDrawable *drawable = gimp_image_get_active_drawable (display->image);
if (! drawable)
return FALSE;
if (gimp_drawable_is_indexed (drawable))
{
g_set_error (error, 0, 0,
_("Levels does not operate on indexed layers."));
return FALSE;
}
if (! l_tool->hist)
l_tool->hist = gimp_histogram_new ();
levels_init (l_tool->levels);
l_tool->channel = GIMP_HISTOGRAM_VALUE;
l_tool->color = gimp_drawable_is_rgb (drawable);
l_tool->alpha = gimp_drawable_has_alpha (drawable);
if (l_tool->active_picker)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (l_tool->active_picker),
FALSE);
GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error);
gimp_int_combo_box_set_sensitivity (GIMP_INT_COMBO_BOX (l_tool->channel_menu),
levels_menu_sensitivity, l_tool, NULL);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (l_tool->channel_menu),
l_tool->channel);
/* FIXME: hack */
if (! l_tool->color)
l_tool->channel = (l_tool->channel == GIMP_HISTOGRAM_ALPHA) ? 1 : 0;
levels_update (l_tool, ALL);
gimp_drawable_calculate_histogram (drawable, l_tool->hist);
gimp_histogram_view_set_histogram (GIMP_HISTOGRAM_VIEW (l_tool->hist_view),
l_tool->hist);
return TRUE;
}
/**
* gimp_histogram_duplicate:
* @histogram: a %GimpHistogram
*
* Creates a duplicate of @histogram. The duplicate has a reference
* count of 1 and contains the values from @histogram.
*
* Return value: a newly allocated %GimpHistogram
**/
GimpHistogram *
gimp_histogram_duplicate (GimpHistogram *histogram)
{
GimpHistogram *dup;
g_return_val_if_fail (histogram != NULL, NULL);
dup = gimp_histogram_new ();
dup->n_channels = histogram->n_channels;
dup->values = g_memdup (histogram->values,
sizeof (gdouble) * dup->n_channels * 256);
return dup;
}
void
gimp_drawable_equalize (GimpDrawable *drawable,
gboolean mask_only)
{
GimpHistogram *hist;
GimpLut *lut;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
hist = gimp_histogram_new ();
gimp_drawable_calculate_histogram (drawable, hist);
lut = equalize_lut_new (hist, gimp_drawable_bytes (drawable));
gimp_histogram_unref (hist);
gimp_drawable_process_lut (drawable, NULL, _("Equalize"), lut);
gimp_lut_free (lut);
}
static gboolean
gimp_curves_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpCurvesTool *c_tool = GIMP_CURVES_TOOL (tool);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpHistogram *histogram;
if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
{
return FALSE;
}
/* always pick colors */
gimp_color_tool_enable (GIMP_COLOR_TOOL (tool),
GIMP_COLOR_TOOL_GET_OPTIONS (tool));
gimp_int_combo_box_set_sensitivity (GIMP_INT_COMBO_BOX (c_tool->channel_menu),
curves_menu_sensitivity, drawable, NULL);
histogram = gimp_histogram_new (TRUE);
gimp_drawable_calculate_histogram (drawable, histogram);
gimp_histogram_view_set_background (GIMP_HISTOGRAM_VIEW (c_tool->graph),
histogram);
g_object_unref (histogram);
if (gimp_drawable_get_precision (drawable) == GIMP_PRECISION_U8)
{
gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (c_tool->graph), 0, 255);
gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (c_tool->graph), 0, 255);
}
else
{
gimp_curve_view_set_range_x (GIMP_CURVE_VIEW (c_tool->graph), 0.0, 1.0);
gimp_curve_view_set_range_y (GIMP_CURVE_VIEW (c_tool->graph), 0.0, 1.0);
}
return TRUE;
}
static gboolean
gimp_curves_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpCurvesTool *c_tool = GIMP_CURVES_TOOL (tool);
GimpDrawable *drawable = gimp_image_get_active_drawable (display->image);
GimpHistogram *histogram;
if (! drawable)
return FALSE;
if (gimp_drawable_is_indexed (drawable))
{
g_set_error (error, 0, 0,
_("Curves does not operate on indexed layers."));
return FALSE;
}
gimp_config_reset (GIMP_CONFIG (c_tool->config));
GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error);
/* always pick colors */
gimp_color_tool_enable (GIMP_COLOR_TOOL (tool),
GIMP_COLOR_TOOL_GET_OPTIONS (tool));
gimp_int_combo_box_set_sensitivity (GIMP_INT_COMBO_BOX (c_tool->channel_menu),
curves_menu_sensitivity, drawable, NULL);
histogram = gimp_histogram_new ();
gimp_drawable_calculate_histogram (drawable, histogram);
gimp_histogram_view_set_background (GIMP_HISTOGRAM_VIEW (c_tool->graph),
histogram);
gimp_histogram_unref (histogram);
return TRUE;
}
static void
gimp_levels_tool_init (GimpLevelsTool *tool)
{
tool->histogram = gimp_histogram_new (TRUE);
}
static void
gimp_threshold_tool_init (GimpThresholdTool *t_tool)
{
t_tool->histogram = gimp_histogram_new ();
}