prolooks helper code from hans, enabling new knob drawing based on Thorsten Wilm's lovely knob/dial design. To Be Tweaked

git-svn-id: svn://localhost/ardour2/branches/3.0@7074 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 1378 insertions, 0 deletions

diff --git a/libs/gtkmm2ext/prolooks_helpers.c b/libs/gtkmm2ext/prolooks_helpers.c
new file mode 100644
index 0000000000..2795b29c6c
--- /dev/null
+++ b/libs/gtkmm2ext/prolooks_helpers.c
@@ -0,0 +1,1378 @@
+/* Helpers.c generated by valac, the Vala compiler
+ * generated from Helpers.vala, do not modify */
+
+/* 
+    Copyright 2009 by Hans Baier
+    License: LGPLv2+ 
+*/
+
+#include "gtkmm2ext/prolooks-helpers.h"
+
+CairoColor* cairo_color_construct (GType object_type, double red, double green, double blue, double alpha) {
+	CairoColor* self;
+	self = (CairoColor*) g_type_create_instance (object_type);
+	cairo_color_set_red (self, red);
+	cairo_color_set_green (self, green);
+	cairo_color_set_blue (self, blue);
+	cairo_color_set_alpha (self, alpha);
+	return self;
+}
+
+
+CairoColor* cairo_color_new (double red, double green, double blue, double alpha) {
+	return cairo_color_construct (CAIRO_TYPE_COLOR, red, green, blue, alpha);
+}
+
+
+CairoColor* cairo_color_copy (CairoColor* self) {
+	CairoColor* result = NULL;
+	g_return_val_if_fail (self != NULL, NULL);
+	result = cairo_color_new (self->priv->_red, self->priv->_green, self->priv->_blue, self->priv->_alpha);
+	return result;
+}
+
+
+CairoColor* cairo_color_construct_from_string (GType object_type, const char* webcolor) {
+	CairoColor* self;
+	g_return_val_if_fail (webcolor != NULL, NULL);
+	self = (CairoColor*) g_type_create_instance (object_type);
+	cairo_color_set_from_string (self, webcolor);
+	return self;
+}
+
+
+CairoColor* cairo_color_new_from_string (const char* webcolor) {
+	return cairo_color_construct_from_string (CAIRO_TYPE_COLOR, webcolor);
+}
+
+
+CairoColor* cairo_color_shade (CairoColor* self, double shade_factor) {
+	CairoColor* result = NULL;
+	ProlooksHSL* hsl;
+	g_return_val_if_fail (self != NULL, NULL);
+	hsl = prolooks_hsl_new ();
+	prolooks_hsl_from_cairo_color (hsl, self);
+	prolooks_hsl_set_lightness (hsl, fmin (prolooks_hsl_get_lightness (hsl) * shade_factor, 1.0));
+	prolooks_hsl_set_lightness (hsl, fmax (prolooks_hsl_get_lightness (hsl), 0.0));
+	prolooks_hsl_set_saturation (hsl, fmin (prolooks_hsl_get_saturation (hsl) * shade_factor, 1.0));
+	prolooks_hsl_set_saturation (hsl, fmax (prolooks_hsl_get_saturation (hsl), 0.0));
+	result = prolooks_hsl_to_cairo_color (hsl);
+	_prolooks_hsl_unref0 (hsl);
+	return result;
+}
+
+
+void cairo_color_set_to (CairoColor* self, CairoColor* a_color) {
+	g_return_if_fail (self != NULL);
+	g_return_if_fail (a_color != NULL);
+	cairo_color_set_red (self, a_color->priv->_red);
+	cairo_color_set_green (self, a_color->priv->_green);
+	cairo_color_set_blue (self, a_color->priv->_blue);
+	cairo_color_set_alpha (self, a_color->priv->_alpha);
+}
+
+
+void cairo_color_set_as_source_in (CairoColor* self, cairo_t* cr) {
+	g_return_if_fail (self != NULL);
+	g_return_if_fail (cr != NULL);
+	cairo_set_source_rgba (cr, self->priv->_red, self->priv->_green, self->priv->_blue, self->priv->_alpha);
+}
+
+
+void cairo_color_add_color_stop_to (CairoColor* self, cairo_pattern_t* p, double offset) {
+	g_return_if_fail (self != NULL);
+	g_return_if_fail (p != NULL);
+	cairo_pattern_add_color_stop_rgba (p, offset, self->priv->_red, self->priv->_green, self->priv->_blue, self->priv->_alpha);
+}
+
+
+void cairo_color_set_from_string (CairoColor* self, const char* webcolor) {
+	CairoColor* _tmp2_;
+	GdkColor _tmp1_;
+	GdkColor _tmp0_ = {0,0,0,0};
+	g_return_if_fail (self != NULL);
+	g_return_if_fail (webcolor != NULL);
+	cairo_color_set_to (self, _tmp2_ = prolooks_gdk_color_to_cairo ((_tmp1_ = (prolooks_color_from_string (webcolor, &_tmp0_), _tmp0_), &_tmp1_)));
+	_cairo_color_unref0 (_tmp2_);
+}
+
+
+double cairo_color_get_red (CairoColor* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_red;
+	return result;
+}
+
+
+void cairo_color_set_red (CairoColor* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_red = value;
+}
+
+
+double cairo_color_get_green (CairoColor* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_green;
+	return result;
+}
+
+
+void cairo_color_set_green (CairoColor* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_green = value;
+}
+
+
+double cairo_color_get_blue (CairoColor* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_blue;
+	return result;
+}
+
+
+void cairo_color_set_blue (CairoColor* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_blue = value;
+}
+
+
+double cairo_color_get_alpha (CairoColor* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_alpha;
+	return result;
+}
+
+
+void cairo_color_set_alpha (CairoColor* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_alpha = value;
+}
+
+
+static void cairo_value_color_init (GValue* value) {
+	value->data[0].v_pointer = NULL;
+}
+
+
+static void cairo_value_color_free_value (GValue* value) {
+	if (value->data[0].v_pointer) {
+		cairo_color_unref (value->data[0].v_pointer);
+	}
+}
+
+
+static void cairo_value_color_copy_value (const GValue* src_value, GValue* dest_value) {
+	if (src_value->data[0].v_pointer) {
+		dest_value->data[0].v_pointer = cairo_color_ref (src_value->data[0].v_pointer);
+	} else {
+		dest_value->data[0].v_pointer = NULL;
+	}
+}
+
+
+static gpointer cairo_value_color_peek_pointer (const GValue* value) {
+	return value->data[0].v_pointer;
+}
+
+
+static gchar* cairo_value_color_collect_value (GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
+	if (collect_values[0].v_pointer) {
+		CairoColor* object;
+		object = collect_values[0].v_pointer;
+		if (object->parent_instance.g_class == NULL) {
+			return g_strconcat ("invalid unclassed object pointer for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
+		} else if (!g_value_type_compatible (G_TYPE_FROM_INSTANCE (object), G_VALUE_TYPE (value))) {
+			return g_strconcat ("invalid object type `", g_type_name (G_TYPE_FROM_INSTANCE (object)), "' for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
+		}
+		value->data[0].v_pointer = cairo_color_ref (object);
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	return NULL;
+}
+
+
+static gchar* cairo_value_color_lcopy_value (const GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
+	CairoColor** object_p;
+	object_p = collect_values[0].v_pointer;
+	if (!object_p) {
+		return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
+	}
+	if (!value->data[0].v_pointer) {
+		*object_p = NULL;
+	} else if (collect_flags && G_VALUE_NOCOPY_CONTENTS) {
+		*object_p = value->data[0].v_pointer;
+	} else {
+		*object_p = cairo_color_ref (value->data[0].v_pointer);
+	}
+	return NULL;
+}
+
+
+GParamSpec* cairo_param_spec_color (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags) {
+	CairoParamSpecColor* spec;
+	g_return_val_if_fail (g_type_is_a (object_type, CAIRO_TYPE_COLOR), NULL);
+	spec = g_param_spec_internal (G_TYPE_PARAM_OBJECT, name, nick, blurb, flags);
+	G_PARAM_SPEC (spec)->value_type = object_type;
+	return G_PARAM_SPEC (spec);
+}
+
+
+gpointer cairo_value_get_color (const GValue* value) {
+	g_return_val_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, CAIRO_TYPE_COLOR), NULL);
+	return value->data[0].v_pointer;
+}
+
+
+void cairo_value_set_color (GValue* value, gpointer v_object) {
+	CairoColor* old;
+	g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, CAIRO_TYPE_COLOR));
+	old = value->data[0].v_pointer;
+	if (v_object) {
+		g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, CAIRO_TYPE_COLOR));
+		g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
+		value->data[0].v_pointer = v_object;
+		cairo_color_ref (value->data[0].v_pointer);
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	if (old) {
+		cairo_color_unref (old);
+	}
+}
+
+
+void cairo_value_take_color (GValue* value, gpointer v_object) {
+	CairoColor* old;
+	g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, CAIRO_TYPE_COLOR));
+	old = value->data[0].v_pointer;
+	if (v_object) {
+		g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, CAIRO_TYPE_COLOR));
+		g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
+		value->data[0].v_pointer = v_object;
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	if (old) {
+		cairo_color_unref (old);
+	}
+}
+
+
+static void cairo_color_class_init (CairoColorClass * klass) {
+	cairo_color_parent_class = g_type_class_peek_parent (klass);
+	CAIRO_COLOR_CLASS (klass)->finalize = cairo_color_finalize;
+	g_type_class_add_private (klass, sizeof (CairoColorPrivate));
+}
+
+
+static void cairo_color_instance_init (CairoColor * self) {
+	self->priv = CAIRO_COLOR_GET_PRIVATE (self);
+	self->ref_count = 1;
+}
+
+
+static void cairo_color_finalize (CairoColor* obj) {
+	CairoColor * self;
+	self = CAIRO_COLOR (obj);
+}
+
+
+GType cairo_color_get_type (void) {
+	static volatile gsize cairo_color_type_id__volatile = 0;
+	if (g_once_init_enter (&cairo_color_type_id__volatile)) {
+		static const GTypeValueTable g_define_type_value_table = { cairo_value_color_init, cairo_value_color_free_value, cairo_value_color_copy_value, cairo_value_color_peek_pointer, "p", cairo_value_color_collect_value, "p", cairo_value_color_lcopy_value };
+		static const GTypeInfo g_define_type_info = { sizeof (CairoColorClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) cairo_color_class_init, (GClassFinalizeFunc) NULL, NULL, sizeof (CairoColor), 0, (GInstanceInitFunc) cairo_color_instance_init, &g_define_type_value_table };
+		static const GTypeFundamentalInfo g_define_type_fundamental_info = { (G_TYPE_FLAG_CLASSED | G_TYPE_FLAG_INSTANTIATABLE | G_TYPE_FLAG_DERIVABLE | G_TYPE_FLAG_DEEP_DERIVABLE) };
+		GType cairo_color_type_id;
+		cairo_color_type_id = g_type_register_fundamental (g_type_fundamental_next (), "CairoColor", &g_define_type_info, &g_define_type_fundamental_info, 0);
+		g_once_init_leave (&cairo_color_type_id__volatile, cairo_color_type_id);
+	}
+	return cairo_color_type_id__volatile;
+}
+
+
+gpointer cairo_color_ref (gpointer instance) {
+	CairoColor* self;
+	self = instance;
+	g_atomic_int_inc (&self->ref_count);
+	return instance;
+}
+
+
+void cairo_color_unref (gpointer instance) {
+	CairoColor* self;
+	self = instance;
+	if (g_atomic_int_dec_and_test (&self->ref_count)) {
+		CAIRO_COLOR_GET_CLASS (self)->finalize (self);
+		g_type_free_instance ((GTypeInstance *) self);
+	}
+}
+
+
+GType prolooks_button_state_get_type (void) {
+	static volatile gsize prolooks_button_state_type_id__volatile = 0;
+	if (g_once_init_enter (&prolooks_button_state_type_id__volatile)) {
+		static const GEnumValue values[] = {{PROLOOKS_BUTTON_STATE_NORMAL, "PROLOOKS_BUTTON_STATE_NORMAL", "normal"}, {PROLOOKS_BUTTON_STATE_PRESSED, "PROLOOKS_BUTTON_STATE_PRESSED", "pressed"}, {0, NULL, NULL}};
+		GType prolooks_button_state_type_id;
+		prolooks_button_state_type_id = g_enum_register_static ("ProlooksButtonState", values);
+		g_once_init_leave (&prolooks_button_state_type_id__volatile, prolooks_button_state_type_id);
+	}
+	return prolooks_button_state_type_id__volatile;
+}
+
+
+GType prolooks_button_type_get_type (void) {
+	static volatile gsize prolooks_button_type_type_id__volatile = 0;
+	if (g_once_init_enter (&prolooks_button_type_type_id__volatile)) {
+		static const GEnumValue values[] = {{PROLOOKS_BUTTON_TYPE_PRESS_BUTTON, "PROLOOKS_BUTTON_TYPE_PRESS_BUTTON", "press-button"}, {PROLOOKS_BUTTON_TYPE_TOGGLE_BUTTON, "PROLOOKS_BUTTON_TYPE_TOGGLE_BUTTON", "toggle-button"}, {0, NULL, NULL}};
+		GType prolooks_button_type_type_id;
+		prolooks_button_type_type_id = g_enum_register_static ("ProlooksButtonType", values);
+		g_once_init_leave (&prolooks_button_type_type_id__volatile, prolooks_button_type_type_id);
+	}
+	return prolooks_button_type_type_id__volatile;
+}
+
+
+void prolooks_set_line_width_from_device (cairo_t* cr) {
+	double ux;
+	double uy;
+	g_return_if_fail (cr != NULL);
+	ux = (double) 1;
+	uy = (double) 1;
+	cairo_device_to_user (cr, &ux, &uy);
+	if (ux < uy) {
+		ux = uy;
+	}
+	cairo_set_line_width (cr, ux);
+}
+
+
+void prolooks_color_from_string (const char* webcolor, GdkColor* result) {
+	GdkColor color = {0,0,0,0};
+	g_return_if_fail (webcolor != NULL);
+	gdk_color_parse (webcolor, &color);
+	*result = color;
+	return;
+}
+
+
+char* prolooks_color_to_string (GdkColor* color) {
+	char* result = NULL;
+	guint16 scale;
+	scale = G_MAXUINT16 / G_MAXUINT8;
+	result = g_strdup_printf ("#%02x%02x%02x", (guint) ((*color).red / scale), (guint) ((*color).green / scale), (guint) ((*color).blue / scale));
+	return result;
+}
+
+
+CairoColor* prolooks_cairo_color_from_string (const char* webcolor) {
+	CairoColor* result = NULL;
+	GdkColor _tmp1_;
+	GdkColor _tmp0_ = {0,0,0,0};
+	g_return_val_if_fail (webcolor != NULL, NULL);
+	result = prolooks_gdk_color_to_cairo ((_tmp1_ = (prolooks_color_from_string (webcolor, &_tmp0_), _tmp0_), &_tmp1_));
+	return result;
+}
+
+
+void prolooks_set_source_color (cairo_t* cr, GdkColor* color, double alpha) {
+	g_return_if_fail (cr != NULL);
+	cairo_set_source_rgba (cr, ((double) (*color).red) / ((double) G_MAXUINT16), ((double) (*color).green) / ((double) G_MAXUINT16), ((double) (*color).blue) / ((double) G_MAXUINT16), alpha);
+}
+
+
+void prolooks_gdk_color_to_cairo_color (GdkColor* color, double* red, double* green, double* blue) {
+	*red = ((double) (*color).red) / ((double) G_MAXUINT16);
+	*green = ((double) (*color).green) / ((double) G_MAXUINT16);
+	*blue = ((double) (*color).blue) / ((double) G_MAXUINT16);
+}
+
+
+CairoColor* prolooks_gdk_color_to_cairo (GdkColor* color) {
+	CairoColor* result = NULL;
+	double r;
+	double g;
+	double b;
+	r = (double) 0;
+	g = (double) 0;
+	b = (double) 0;
+	prolooks_gdk_color_to_cairo_color (color, &r, &g, &b);
+	result = cairo_color_new (r, g, b, 1.0);
+	return result;
+}
+
+
+void prolooks_cairo_color_to_gdk (CairoColor* cairo_color, GdkColor* result) {
+	GdkColor color = {0,0,0,0};
+	g_return_if_fail (cairo_color != NULL);
+	memset (&color, 0, sizeof (GdkColor));
+	color.red = (guint16) (cairo_color_get_red (cairo_color) * ((double) G_MAXUINT16));
+	color.green = (guint16) (cairo_color_get_green (cairo_color) * ((double) G_MAXUINT16));
+	color.blue = (guint16) (cairo_color_get_blue (cairo_color) * ((double) G_MAXUINT16));
+	*result = color;
+	return;
+}
+
+
+void prolooks_set_source_color_string (cairo_t* cr, const char* color, double alpha) {
+	GdkColor _tmp1_;
+	GdkColor _tmp0_ = {0,0,0,0};
+	g_return_if_fail (cr != NULL);
+	g_return_if_fail (color != NULL);
+	prolooks_set_source_color (cr, (_tmp1_ = (prolooks_color_from_string (color, &_tmp0_), _tmp0_), &_tmp1_), alpha);
+}
+
+
+void prolooks_add_color_stop (cairo_pattern_t* p, double offset, GdkColor* color, double alpha) {
+	g_return_if_fail (p != NULL);
+	cairo_pattern_add_color_stop_rgba (p, offset, ((double) (*color).red) / ((double) G_MAXUINT16), ((double) (*color).green) / ((double) G_MAXUINT16), ((double) (*color).blue) / ((double) G_MAXUINT16), alpha);
+}
+
+
+void prolooks_add_color_stop_str (cairo_pattern_t* p, double offset, const char* color, double alpha) {
+	GdkColor _tmp1_;
+	GdkColor _tmp0_ = {0,0,0,0};
+	g_return_if_fail (p != NULL);
+	g_return_if_fail (color != NULL);
+	prolooks_add_color_stop (p, offset, (_tmp1_ = (prolooks_color_from_string (color, &_tmp0_), _tmp0_), &_tmp1_), alpha);
+}
+
+
+cairo_pattern_t* prolooks_create_gradient (double x1, double y1, double x2, double y2, GdkColor* start, GdkColor* stop, double alpha_start, double alpha_stop) {
+	cairo_pattern_t* result = NULL;
+	cairo_pattern_t* gradient;
+	gradient = cairo_pattern_create_linear (x1, y1, x2, y2);
+	prolooks_add_color_stop (gradient, (double) 0, start, alpha_start);
+	prolooks_add_color_stop (gradient, (double) 1, stop, alpha_stop);
+	result = gradient;
+	return result;
+}
+
+
+cairo_pattern_t* prolooks_create_gradient_str (double x1, double y1, double x2, double y2, const char* start, const char* stop, double alpha_start, double alpha_stop) {
+	cairo_pattern_t* result = NULL;
+	GdkColor _tmp3_;
+	GdkColor _tmp2_;
+	GdkColor _tmp1_ = {0,0,0,0};
+	GdkColor _tmp0_ = {0,0,0,0};
+	g_return_val_if_fail (start != NULL, NULL);
+	g_return_val_if_fail (stop != NULL, NULL);
+	result = prolooks_create_gradient (x1, y1, x2, y2, (_tmp2_ = (prolooks_color_from_string (start, &_tmp0_), _tmp0_), &_tmp2_), (_tmp3_ = (prolooks_color_from_string (stop, &_tmp1_), _tmp1_), &_tmp3_), alpha_start, alpha_stop);
+	return result;
+}
+
+
+void prolooks_rounded_rect (cairo_t* cr, double x, double y, double w, double h, double radius_x, double radius_y) {
+	double ARC_TO_BEZIER;
+	double c1;
+	double c2;
+	g_return_if_fail (cr != NULL);
+	ARC_TO_BEZIER = 0.55228475;
+	if (radius_x > (w - radius_x)) {
+		radius_x = w / 2;
+	}
+	if (radius_y > (h - radius_y)) {
+		radius_y = h / 2;
+	}
+	c1 = ARC_TO_BEZIER * radius_x;
+	c2 = ARC_TO_BEZIER * radius_y;
+	cairo_new_path (cr);
+	cairo_move_to (cr, x + radius_x, y);
+	cairo_rel_line_to (cr, w - (2 * radius_x), 0.0);
+	cairo_rel_curve_to (cr, c1, 0.0, radius_x, c2, radius_x, radius_y);
+	cairo_rel_line_to (cr, (double) 0, h - (2 * radius_y));
+	cairo_rel_curve_to (cr, 0.0, c2, c1 - radius_x, radius_y, -radius_x, radius_y);
+	cairo_rel_line_to (cr, (-w) + (2 * radius_x), (double) 0);
+	cairo_rel_curve_to (cr, -c1, (double) 0, -radius_x, -c2, -radius_x, -radius_y);
+	cairo_rel_line_to (cr, (double) 0, (-h) + (2 * radius_y));
+	cairo_rel_curve_to (cr, 0.0, -c2, radius_x - c1, -radius_y, radius_x, -radius_y);
+	cairo_close_path (cr);
+}
+
+
+void prolooks_background_gradient (cairo_t* cr, double w, double h) {
+	GdkColor background_gradient_start = {0,0,0,0};
+	GdkColor background_gradient_stop = {0,0,0,0};
+	cairo_pattern_t* background_gradient;
+	g_return_if_fail (cr != NULL);
+	gdk_color_parse ("#bebdc2", &background_gradient_start);
+	gdk_color_parse ("#b1b4b9", &background_gradient_stop);
+	cairo_rectangle (cr, (double) 0, (double) 0, w, h);
+	background_gradient = cairo_pattern_create_linear ((double) 0, (double) 0, (double) 0, h);
+	prolooks_add_color_stop (background_gradient, (double) 0, &background_gradient_start, 1.0);
+	prolooks_add_color_stop (background_gradient, (double) 1, &background_gradient_stop, 1.0);
+	cairo_set_source (cr, background_gradient);
+	cairo_fill (cr);
+	_cairo_pattern_destroy0 (background_gradient);
+}
+
+
+double prolooks_modula (double number, double divisor) {
+	double result = 0.0;
+	result = (((gint) number) % ((gint) divisor)) + (number - ((gint) number));
+	return result;
+}
+
+
+char* prolooks_hsl_to_string (ProlooksHSL* self) {
+	char* result = NULL;
+	g_return_val_if_fail (self != NULL, NULL);
+	result = g_strdup_printf ("HSL (%f, %f, %f)", self->priv->_hue, self->priv->_saturation, self->priv->_lightness);
+	return result;
+}
+
+
+CairoColor* prolooks_hsl_to_cairo_color (ProlooksHSL* self) {
+	CairoColor* result = NULL;
+	gint i = 0;
+	double* _tmp0_;
+	gint _hue_shift_size_;
+	gint hue_shift_length1;
+	double* hue_shift;
+	double* _tmp1_;
+	gint _color_shift_size_;
+	gint color_shift_length1;
+	double* color_shift;
+	double m1 = 0.0;
+	double m2 = 0.0;
+	double m3 = 0.0;
+	gint _tmp2_ = 0;
+	CairoColor* color;
+	g_return_val_if_fail (self != NULL, NULL);
+	hue_shift = (_tmp0_ = g_new0 (double, 3), hue_shift_length1 = 3, _hue_shift_size_ = hue_shift_length1, _tmp0_);
+	color_shift = (_tmp1_ = g_new0 (double, 3), color_shift_length1 = 3, _color_shift_size_ = color_shift_length1, _tmp1_);
+	if (self->priv->_lightness <= 0.5) {
+		m2 = self->priv->_lightness * (1 + self->priv->_saturation);
+	} else {
+		m2 = (self->priv->_lightness + self->priv->_saturation) - (self->priv->_lightness * self->priv->_saturation);
+	}
+	m1 = (2 * self->priv->_lightness) - m2;
+	hue_shift[0] = self->priv->_hue + 120;
+	hue_shift[1] = self->priv->_hue;
+	hue_shift[2] = self->priv->_hue - 120;
+	color_shift[0] = color_shift[1] = color_shift[2] = self->priv->_lightness;
+	if (self->priv->_saturation == 0) {
+		_tmp2_ = 3;
+	} else {
+		_tmp2_ = 0;
+	}
+	i = _tmp2_;
+	{
+		gboolean _tmp3_;
+		_tmp3_ = TRUE;
+		while (TRUE) {
+			if (!_tmp3_) {
+				i++;
+			}
+			_tmp3_ = FALSE;
+			if (!(i < 3)) {
+				break;
+			}
+			m3 = hue_shift[i];
+			if (m3 > 360) {
+				m3 = prolooks_modula (m3, (double) 360);
+			} else {
+				if (m3 < 0) {
+					m3 = 360 - prolooks_modula (fabs (m3), (double) 360);
+				}
+			}
+			if (m3 < 60) {
+				color_shift[i] = m1 + (((m2 - m1) * m3) / 60.0);
+			} else {
+				if (m3 < 180) {
+					color_shift[i] = m2;
+				} else {
+					if (m3 < 240) {
+						color_shift[i] = m1 + (((m2 - m1) * (240 - m3)) / 60.0);
+					} else {
+						color_shift[i] = m1;
+					}
+				}
+			}
+		}
+	}
+	color = cairo_color_new (color_shift[0], color_shift[1], color_shift[2], 1.0);
+	result = color;
+	hue_shift = (g_free (hue_shift), NULL);
+	color_shift = (g_free (color_shift), NULL);
+	return result;
+}
+
+
+void prolooks_hsl_to_gdk_color (ProlooksHSL* self, GdkColor* result) {
+	GdkColor _tmp1_ = {0,0,0,0};
+	CairoColor* _tmp0_;
+	GdkColor _tmp2_;
+	g_return_if_fail (self != NULL);
+	*result = (_tmp2_ = (prolooks_cairo_color_to_gdk (_tmp0_ = prolooks_hsl_to_cairo_color (self), &_tmp1_), _tmp1_), _cairo_color_unref0 (_tmp0_), _tmp2_);
+	return;
+}
+
+
+void prolooks_hsl_from_gdk_color (ProlooksHSL* self, GdkColor* color) {
+	CairoColor* _tmp0_;
+	g_return_if_fail (self != NULL);
+	prolooks_hsl_from_cairo_color (self, _tmp0_ = prolooks_gdk_color_to_cairo (color));
+	_cairo_color_unref0 (_tmp0_);
+}
+
+
+void prolooks_hsl_from_cairo_color (ProlooksHSL* self, CairoColor* color) {
+	double min = 0.0;
+	double max = 0.0;
+	double delta = 0.0;
+	double red;
+	double green;
+	double blue;
+	g_return_if_fail (self != NULL);
+	g_return_if_fail (color != NULL);
+	red = cairo_color_get_red (color);
+	green = cairo_color_get_green (color);
+	blue = cairo_color_get_blue (color);
+	if (red > green) {
+		if (red > blue) {
+			max = red;
+		} else {
+			max = blue;
+		}
+		if (green < blue) {
+			min = green;
+		} else {
+			min = blue;
+		}
+	} else {
+		if (green > blue) {
+			max = green;
+		} else {
+			max = blue;
+		}
+		if (red < blue) {
+			min = red;
+		} else {
+			min = blue;
+		}
+	}
+	prolooks_hsl_set_lightness (self, (max + min) / 2.0);
+	if (fabs (max - min) < 0.0001) {
+		prolooks_hsl_set_hue (self, 0.0);
+		prolooks_hsl_set_saturation (self, 0.0);
+	} else {
+		if (self->priv->_lightness <= 0.5) {
+			prolooks_hsl_set_saturation (self, (max - min) / (max + min));
+		} else {
+			prolooks_hsl_set_saturation (self, (max - min) / ((2.0 - max) - min));
+		}
+		delta = max - min;
+		if (red == max) {
+			prolooks_hsl_set_hue (self, (green - blue) / delta);
+		} else {
+			if (green == max) {
+				prolooks_hsl_set_hue (self, 2.0 + ((blue - red) / delta));
+			} else {
+				if (blue == max) {
+					prolooks_hsl_set_hue (self, 4.0 + ((red - green) / delta));
+				}
+			}
+		}
+		prolooks_hsl_set_hue (self, self->priv->_hue * 60.0);
+		if (self->priv->_hue < 0.0) {
+			prolooks_hsl_set_hue (self, self->priv->_hue + 360.0);
+		}
+	}
+}
+
+
+ProlooksHSL* prolooks_hsl_construct (GType object_type) {
+	ProlooksHSL* self;
+	self = (ProlooksHSL*) g_type_create_instance (object_type);
+	return self;
+}
+
+
+ProlooksHSL* prolooks_hsl_new (void) {
+	return prolooks_hsl_construct (PROLOOKS_TYPE_HSL);
+}
+
+
+double prolooks_hsl_get_hue (ProlooksHSL* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_hue;
+	return result;
+}
+
+
+void prolooks_hsl_set_hue (ProlooksHSL* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_hue = value;
+}
+
+
+double prolooks_hsl_get_saturation (ProlooksHSL* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_saturation;
+	return result;
+}
+
+
+void prolooks_hsl_set_saturation (ProlooksHSL* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_saturation = value;
+}
+
+
+double prolooks_hsl_get_lightness (ProlooksHSL* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_lightness;
+	return result;
+}
+
+
+void prolooks_hsl_set_lightness (ProlooksHSL* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_lightness = value;
+}
+
+
+static void prolooks_value_hsl_init (GValue* value) {
+	value->data[0].v_pointer = NULL;
+}
+
+
+static void prolooks_value_hsl_free_value (GValue* value) {
+	if (value->data[0].v_pointer) {
+		prolooks_hsl_unref (value->data[0].v_pointer);
+	}
+}
+
+
+static void prolooks_value_hsl_copy_value (const GValue* src_value, GValue* dest_value) {
+	if (src_value->data[0].v_pointer) {
+		dest_value->data[0].v_pointer = prolooks_hsl_ref (src_value->data[0].v_pointer);
+	} else {
+		dest_value->data[0].v_pointer = NULL;
+	}
+}
+
+
+static gpointer prolooks_value_hsl_peek_pointer (const GValue* value) {
+	return value->data[0].v_pointer;
+}
+
+
+static gchar* prolooks_value_hsl_collect_value (GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
+	if (collect_values[0].v_pointer) {
+		ProlooksHSL* object;
+		object = collect_values[0].v_pointer;
+		if (object->parent_instance.g_class == NULL) {
+			return g_strconcat ("invalid unclassed object pointer for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
+		} else if (!g_value_type_compatible (G_TYPE_FROM_INSTANCE (object), G_VALUE_TYPE (value))) {
+			return g_strconcat ("invalid object type `", g_type_name (G_TYPE_FROM_INSTANCE (object)), "' for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
+		}
+		value->data[0].v_pointer = prolooks_hsl_ref (object);
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	return NULL;
+}
+
+
+static gchar* prolooks_value_hsl_lcopy_value (const GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
+	ProlooksHSL** object_p;
+	object_p = collect_values[0].v_pointer;
+	if (!object_p) {
+		return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
+	}
+	if (!value->data[0].v_pointer) {
+		*object_p = NULL;
+	} else if (collect_flags && G_VALUE_NOCOPY_CONTENTS) {
+		*object_p = value->data[0].v_pointer;
+	} else {
+		*object_p = prolooks_hsl_ref (value->data[0].v_pointer);
+	}
+	return NULL;
+}
+
+
+GParamSpec* prolooks_param_spec_hsl (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags) {
+	ProlooksParamSpecHSL* spec;
+	g_return_val_if_fail (g_type_is_a (object_type, PROLOOKS_TYPE_HSL), NULL);
+	spec = g_param_spec_internal (G_TYPE_PARAM_OBJECT, name, nick, blurb, flags);
+	G_PARAM_SPEC (spec)->value_type = object_type;
+	return G_PARAM_SPEC (spec);
+}
+
+
+gpointer prolooks_value_get_hsl (const GValue* value) {
+	g_return_val_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, PROLOOKS_TYPE_HSL), NULL);
+	return value->data[0].v_pointer;
+}
+
+
+void prolooks_value_set_hsl (GValue* value, gpointer v_object) {
+	ProlooksHSL* old;
+	g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, PROLOOKS_TYPE_HSL));
+	old = value->data[0].v_pointer;
+	if (v_object) {
+		g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, PROLOOKS_TYPE_HSL));
+		g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
+		value->data[0].v_pointer = v_object;
+		prolooks_hsl_ref (value->data[0].v_pointer);
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	if (old) {
+		prolooks_hsl_unref (old);
+	}
+}
+
+
+void prolooks_value_take_hsl (GValue* value, gpointer v_object) {
+	ProlooksHSL* old;
+	g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, PROLOOKS_TYPE_HSL));
+	old = value->data[0].v_pointer;
+	if (v_object) {
+		g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, PROLOOKS_TYPE_HSL));
+		g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
+		value->data[0].v_pointer = v_object;
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	if (old) {
+		prolooks_hsl_unref (old);
+	}
+}
+
+
+static void prolooks_hsl_class_init (ProlooksHSLClass * klass) {
+	prolooks_hsl_parent_class = g_type_class_peek_parent (klass);
+	PROLOOKS_HSL_CLASS (klass)->finalize = prolooks_hsl_finalize;
+	g_type_class_add_private (klass, sizeof (ProlooksHSLPrivate));
+}
+
+
+static void prolooks_hsl_instance_init (ProlooksHSL * self) {
+	self->priv = PROLOOKS_HSL_GET_PRIVATE (self);
+	self->ref_count = 1;
+}
+
+
+static void prolooks_hsl_finalize (ProlooksHSL* obj) {
+	ProlooksHSL * self;
+	self = PROLOOKS_HSL (obj);
+}
+
+
+GType prolooks_hsl_get_type (void) {
+	static volatile gsize prolooks_hsl_type_id__volatile = 0;
+	if (g_once_init_enter (&prolooks_hsl_type_id__volatile)) {
+		static const GTypeValueTable g_define_type_value_table = { prolooks_value_hsl_init, prolooks_value_hsl_free_value, prolooks_value_hsl_copy_value, prolooks_value_hsl_peek_pointer, "p", prolooks_value_hsl_collect_value, "p", prolooks_value_hsl_lcopy_value };
+		static const GTypeInfo g_define_type_info = { sizeof (ProlooksHSLClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) prolooks_hsl_class_init, (GClassFinalizeFunc) NULL, NULL, sizeof (ProlooksHSL), 0, (GInstanceInitFunc) prolooks_hsl_instance_init, &g_define_type_value_table };
+		static const GTypeFundamentalInfo g_define_type_fundamental_info = { (G_TYPE_FLAG_CLASSED | G_TYPE_FLAG_INSTANTIATABLE | G_TYPE_FLAG_DERIVABLE | G_TYPE_FLAG_DEEP_DERIVABLE) };
+		GType prolooks_hsl_type_id;
+		prolooks_hsl_type_id = g_type_register_fundamental (g_type_fundamental_next (), "ProlooksHSL", &g_define_type_info, &g_define_type_fundamental_info, 0);
+		g_once_init_leave (&prolooks_hsl_type_id__volatile, prolooks_hsl_type_id);
+	}
+	return prolooks_hsl_type_id__volatile;
+}
+
+
+gpointer prolooks_hsl_ref (gpointer instance) {
+	ProlooksHSL* self;
+	self = instance;
+	g_atomic_int_inc (&self->ref_count);
+	return instance;
+}
+
+
+void prolooks_hsl_unref (gpointer instance) {
+	ProlooksHSL* self;
+	self = instance;
+	if (g_atomic_int_dec_and_test (&self->ref_count)) {
+		PROLOOKS_HSL_GET_CLASS (self)->finalize (self);
+		g_type_free_instance ((GTypeInstance *) self);
+	}
+}
+
+
+char* prolooks_hsv_to_string (ProlooksHSV* self) {
+	char* result = NULL;
+	g_return_val_if_fail (self != NULL, NULL);
+	result = g_strdup_printf ("HSV (%f, %f, %f)", self->priv->_hue, self->priv->_saturation, self->priv->_value);
+	return result;
+}
+
+
+ProlooksHSV* prolooks_hsv_construct_for_gdk_color (GType object_type, GdkColor* color) {
+	ProlooksHSV* self;
+	self = (ProlooksHSV*) g_type_create_instance (object_type);
+	prolooks_hsv_from_gdk_color (self, color);
+	return self;
+}
+
+
+ProlooksHSV* prolooks_hsv_new_for_gdk_color (GdkColor* color) {
+	return prolooks_hsv_construct_for_gdk_color (PROLOOKS_TYPE_HSV, color);
+}
+
+
+ProlooksHSV* prolooks_hsv_construct_for_cairo_color (GType object_type, CairoColor* color) {
+	ProlooksHSV* self;
+	g_return_val_if_fail (color != NULL, NULL);
+	self = (ProlooksHSV*) g_type_create_instance (object_type);
+	prolooks_hsv_from_cairo_color (self, color);
+	return self;
+}
+
+
+ProlooksHSV* prolooks_hsv_new_for_cairo_color (CairoColor* color) {
+	return prolooks_hsv_construct_for_cairo_color (PROLOOKS_TYPE_HSV, color);
+}
+
+
+CairoColor* prolooks_hsv_to_cairo_color (ProlooksHSV* self) {
+	CairoColor* result = NULL;
+	double r;
+	double g;
+	double b;
+	double v;
+	gint hi = 0;
+	double f = 0.0;
+	double p = 0.0;
+	double q = 0.0;
+	double t = 0.0;
+	CairoColor* color;
+	g_return_val_if_fail (self != NULL, NULL);
+	r = 0.0;
+	g = 0.0;
+	b = 0.0;
+	v = self->priv->_value;
+	hi = (gint) prolooks_modula (floor (self->priv->_hue / 60.0), (double) 6);
+	f = (self->priv->_hue / 60.0) - floor (self->priv->_hue / 60.0);
+	p = self->priv->_value * (1.0 - self->priv->_saturation);
+	q = self->priv->_value * (1.0 - (f * self->priv->_saturation));
+	t = self->priv->_value * (1.0 - ((1.0 - f) * self->priv->_saturation));
+	switch (hi) {
+		case 0:
+		{
+			r = self->priv->_value;
+			g = t;
+			b = p;
+			break;
+		}
+		case 1:
+		{
+			r = q;
+			g = self->priv->_value;
+			b = p;
+			break;
+		}
+		case 2:
+		{
+			r = p;
+			g = self->priv->_value;
+			b = t;
+			break;
+		}
+		case 3:
+		{
+			r = p;
+			g = q;
+			b = self->priv->_value;
+			break;
+		}
+		case 4:
+		{
+			r = t;
+			g = p;
+			b = self->priv->_value;
+			break;
+		}
+		case 5:
+		{
+			r = self->priv->_value;
+			g = p;
+			b = q;
+			break;
+		}
+		default:
+		{
+			break;
+		}
+	}
+	color = cairo_color_new (r, g, b, 1.0);
+	result = color;
+	return result;
+}
+
+
+void prolooks_hsv_to_gdk_color (ProlooksHSV* self, GdkColor* result) {
+	GdkColor _tmp1_ = {0,0,0,0};
+	CairoColor* _tmp0_;
+	GdkColor _tmp2_;
+	g_return_if_fail (self != NULL);
+	*result = (_tmp2_ = (prolooks_cairo_color_to_gdk (_tmp0_ = prolooks_hsv_to_cairo_color (self), &_tmp1_), _tmp1_), _cairo_color_unref0 (_tmp0_), _tmp2_);
+	return;
+}
+
+
+void prolooks_hsv_from_gdk_color (ProlooksHSV* self, GdkColor* color) {
+	CairoColor* _tmp0_;
+	g_return_if_fail (self != NULL);
+	prolooks_hsv_from_cairo_color (self, _tmp0_ = prolooks_gdk_color_to_cairo (color));
+	_cairo_color_unref0 (_tmp0_);
+}
+
+
+void prolooks_hsv_from_cairo_color (ProlooksHSV* self, CairoColor* color) {
+	double min = 0.0;
+	double max = 0.0;
+	double delta = 0.0;
+	double red;
+	double green;
+	double blue;
+	g_return_if_fail (self != NULL);
+	g_return_if_fail (color != NULL);
+	red = cairo_color_get_red (color);
+	green = cairo_color_get_green (color);
+	blue = cairo_color_get_blue (color);
+	if (red > green) {
+		if (red > blue) {
+			max = red;
+		} else {
+			max = blue;
+		}
+		if (green < blue) {
+			min = green;
+		} else {
+			min = blue;
+		}
+	} else {
+		if (green > blue) {
+			max = green;
+		} else {
+			max = blue;
+		}
+		if (red < blue) {
+			min = red;
+		} else {
+			min = blue;
+		}
+	}
+	prolooks_hsv_set_value (self, max);
+	if (fabs (max - min) < 0.0001) {
+		prolooks_hsv_set_hue (self, 0.0);
+		prolooks_hsv_set_saturation (self, 0.0);
+	} else {
+		if (max < 0.0001) {
+			prolooks_hsv_set_saturation (self, (double) 0);
+		} else {
+			prolooks_hsv_set_saturation (self, (max - min) / max);
+		}
+		delta = max - min;
+		if (red == max) {
+			prolooks_hsv_set_hue (self, (green - blue) / delta);
+		} else {
+			if (green == max) {
+				prolooks_hsv_set_hue (self, 2.0 + ((blue - red) / delta));
+			} else {
+				if (blue == max) {
+					prolooks_hsv_set_hue (self, 4.0 + ((red - green) / delta));
+				}
+			}
+		}
+		prolooks_hsv_set_hue (self, self->priv->_hue * 60.0);
+		if (self->priv->_hue < 0.0) {
+			prolooks_hsv_set_hue (self, self->priv->_hue + 360.0);
+		}
+	}
+}
+
+
+ProlooksHSV* prolooks_hsv_construct (GType object_type) {
+	ProlooksHSV* self;
+	self = (ProlooksHSV*) g_type_create_instance (object_type);
+	return self;
+}
+
+
+ProlooksHSV* prolooks_hsv_new (void) {
+	return prolooks_hsv_construct (PROLOOKS_TYPE_HSV);
+}
+
+
+double prolooks_hsv_get_hue (ProlooksHSV* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_hue;
+	return result;
+}
+
+
+void prolooks_hsv_set_hue (ProlooksHSV* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_hue = value;
+}
+
+
+double prolooks_hsv_get_saturation (ProlooksHSV* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_saturation;
+	return result;
+}
+
+
+void prolooks_hsv_set_saturation (ProlooksHSV* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_saturation = value;
+}
+
+
+double prolooks_hsv_get_value (ProlooksHSV* self) {
+	double result;
+	g_return_val_if_fail (self != NULL, 0.0);
+	result = self->priv->_value;
+	return result;
+}
+
+
+void prolooks_hsv_set_value (ProlooksHSV* self, double value) {
+	g_return_if_fail (self != NULL);
+	self->priv->_value = value;
+}
+
+
+static void prolooks_value_hsv_init (GValue* value) {
+	value->data[0].v_pointer = NULL;
+}
+
+
+static void prolooks_value_hsv_free_value (GValue* value) {
+	if (value->data[0].v_pointer) {
+		prolooks_hsv_unref (value->data[0].v_pointer);
+	}
+}
+
+
+static void prolooks_value_hsv_copy_value (const GValue* src_value, GValue* dest_value) {
+	if (src_value->data[0].v_pointer) {
+		dest_value->data[0].v_pointer = prolooks_hsv_ref (src_value->data[0].v_pointer);
+	} else {
+		dest_value->data[0].v_pointer = NULL;
+	}
+}
+
+
+static gpointer prolooks_value_hsv_peek_pointer (const GValue* value) {
+	return value->data[0].v_pointer;
+}
+
+
+static gchar* prolooks_value_hsv_collect_value (GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
+	if (collect_values[0].v_pointer) {
+		ProlooksHSV* object;
+		object = collect_values[0].v_pointer;
+		if (object->parent_instance.g_class == NULL) {
+			return g_strconcat ("invalid unclassed object pointer for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
+		} else if (!g_value_type_compatible (G_TYPE_FROM_INSTANCE (object), G_VALUE_TYPE (value))) {
+			return g_strconcat ("invalid object type `", g_type_name (G_TYPE_FROM_INSTANCE (object)), "' for value type `", G_VALUE_TYPE_NAME (value), "'", NULL);
+		}
+		value->data[0].v_pointer = prolooks_hsv_ref (object);
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	return NULL;
+}
+
+
+static gchar* prolooks_value_hsv_lcopy_value (const GValue* value, guint n_collect_values, GTypeCValue* collect_values, guint collect_flags) {
+	ProlooksHSV** object_p;
+	object_p = collect_values[0].v_pointer;
+	if (!object_p) {
+		return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
+	}
+	if (!value->data[0].v_pointer) {
+		*object_p = NULL;
+	} else if (collect_flags && G_VALUE_NOCOPY_CONTENTS) {
+		*object_p = value->data[0].v_pointer;
+	} else {
+		*object_p = prolooks_hsv_ref (value->data[0].v_pointer);
+	}
+	return NULL;
+}
+
+
+GParamSpec* prolooks_param_spec_hsv (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags) {
+	ProlooksParamSpecHSV* spec;
+	g_return_val_if_fail (g_type_is_a (object_type, PROLOOKS_TYPE_HSV), NULL);
+	spec = g_param_spec_internal (G_TYPE_PARAM_OBJECT, name, nick, blurb, flags);
+	G_PARAM_SPEC (spec)->value_type = object_type;
+	return G_PARAM_SPEC (spec);
+}
+
+
+gpointer prolooks_value_get_hsv (const GValue* value) {
+	g_return_val_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, PROLOOKS_TYPE_HSV), NULL);
+	return value->data[0].v_pointer;
+}
+
+
+void prolooks_value_set_hsv (GValue* value, gpointer v_object) {
+	ProlooksHSV* old;
+	g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, PROLOOKS_TYPE_HSV));
+	old = value->data[0].v_pointer;
+	if (v_object) {
+		g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, PROLOOKS_TYPE_HSV));
+		g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
+		value->data[0].v_pointer = v_object;
+		prolooks_hsv_ref (value->data[0].v_pointer);
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	if (old) {
+		prolooks_hsv_unref (old);
+	}
+}
+
+
+void prolooks_value_take_hsv (GValue* value, gpointer v_object) {
+	ProlooksHSV* old;
+	g_return_if_fail (G_TYPE_CHECK_VALUE_TYPE (value, PROLOOKS_TYPE_HSV));
+	old = value->data[0].v_pointer;
+	if (v_object) {
+		g_return_if_fail (G_TYPE_CHECK_INSTANCE_TYPE (v_object, PROLOOKS_TYPE_HSV));
+		g_return_if_fail (g_value_type_compatible (G_TYPE_FROM_INSTANCE (v_object), G_VALUE_TYPE (value)));
+		value->data[0].v_pointer = v_object;
+	} else {
+		value->data[0].v_pointer = NULL;
+	}
+	if (old) {
+		prolooks_hsv_unref (old);
+	}
+}
+
+
+static void prolooks_hsv_class_init (ProlooksHSVClass * klass) {
+	prolooks_hsv_parent_class = g_type_class_peek_parent (klass);
+	PROLOOKS_HSV_CLASS (klass)->finalize = prolooks_hsv_finalize;
+	g_type_class_add_private (klass, sizeof (ProlooksHSVPrivate));
+}
+
+
+static void prolooks_hsv_instance_init (ProlooksHSV * self) {
+	self->priv = PROLOOKS_HSV_GET_PRIVATE (self);
+	self->ref_count = 1;
+}
+
+
+static void prolooks_hsv_finalize (ProlooksHSV* obj) {
+	ProlooksHSV * self;
+	self = PROLOOKS_HSV (obj);
+}
+
+
+GType prolooks_hsv_get_type (void) {
+	static volatile gsize prolooks_hsv_type_id__volatile = 0;
+	if (g_once_init_enter (&prolooks_hsv_type_id__volatile)) {
+		static const GTypeValueTable g_define_type_value_table = { prolooks_value_hsv_init, prolooks_value_hsv_free_value, prolooks_value_hsv_copy_value, prolooks_value_hsv_peek_pointer, "p", prolooks_value_hsv_collect_value, "p", prolooks_value_hsv_lcopy_value };
+		static const GTypeInfo g_define_type_info = { sizeof (ProlooksHSVClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) prolooks_hsv_class_init, (GClassFinalizeFunc) NULL, NULL, sizeof (ProlooksHSV), 0, (GInstanceInitFunc) prolooks_hsv_instance_init, &g_define_type_value_table };
+		static const GTypeFundamentalInfo g_define_type_fundamental_info = { (G_TYPE_FLAG_CLASSED | G_TYPE_FLAG_INSTANTIATABLE | G_TYPE_FLAG_DERIVABLE | G_TYPE_FLAG_DEEP_DERIVABLE) };
+		GType prolooks_hsv_type_id;
+		prolooks_hsv_type_id = g_type_register_fundamental (g_type_fundamental_next (), "ProlooksHSV", &g_define_type_info, &g_define_type_fundamental_info, 0);
+		g_once_init_leave (&prolooks_hsv_type_id__volatile, prolooks_hsv_type_id);
+	}
+	return prolooks_hsv_type_id__volatile;
+}
+
+
+gpointer prolooks_hsv_ref (gpointer instance) {
+	ProlooksHSV* self;
+	self = instance;
+	g_atomic_int_inc (&self->ref_count);
+	return instance;
+}
+
+
+void prolooks_hsv_unref (gpointer instance) {
+	ProlooksHSV* self;
+	self = instance;
+	if (g_atomic_int_dec_and_test (&self->ref_count)) {
+		PROLOOKS_HSV_GET_CLASS (self)->finalize (self);
+		g_type_free_instance ((GTypeInstance *) self);
+	}
+}
+
+
+void prolooks_shade_color (GdkColor* orig, double shade_ratio, GdkColor* result) {
+	ProlooksHSL* HSL;
+	GdkColor _tmp0_ = {0,0,0,0};
+	GdkColor _result_;
+	HSL = prolooks_hsl_new ();
+	prolooks_hsl_from_gdk_color (HSL, orig);
+	prolooks_hsl_set_lightness (HSL, fmin (prolooks_hsl_get_lightness (HSL) * shade_ratio, 1.0));
+	prolooks_hsl_set_lightness (HSL, fmax (prolooks_hsl_get_lightness (HSL), 0.0));
+	prolooks_hsl_set_saturation (HSL, fmin (prolooks_hsl_get_saturation (HSL) * shade_ratio, 1.0));
+	prolooks_hsl_set_saturation (HSL, fmax (prolooks_hsl_get_saturation (HSL), 0.0));
+	_result_ = (prolooks_hsl_to_gdk_color (HSL, &_tmp0_), _tmp0_);
+	*result = _result_;
+	_prolooks_hsl_unref0 (HSL);
+	return;
+}
+
+
+GdkPixbuf* prolooks_cairo_image_surface_to_pixbuf (cairo_surface_t* surface) {
+	GdkPixbuf* result = NULL;
+	guchar* _tmp0_;
+	gint _knob_data_size_;
+	gint knob_data_length1;
+	guchar* knob_data;
+	g_return_val_if_fail (surface != NULL, NULL);
+	if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_ARGB32) {
+		result = NULL;
+		return result;
+	}
+	knob_data = (_tmp0_ = cairo_image_surface_get_data (surface), knob_data_length1 = -1, _knob_data_size_ = knob_data_length1, _tmp0_);
+	{
+		gint i;
+		i = 0;
+		{
+			gboolean _tmp1_;
+			_tmp1_ = TRUE;
+			while (TRUE) {
+				guchar r;
+				guchar g;
+				guchar b;
+				guchar a;
+				if (!_tmp1_) {
+					i = i + 4;
+				}
+				_tmp1_ = FALSE;
+				if (!(i < (cairo_image_surface_get_height (surface) * cairo_image_surface_get_stride (surface)))) {
+					break;
+				}
+				r = knob_data[i + 0];
+				g = knob_data[i + 1];
+				b = knob_data[i + 2];
+				a = knob_data[i + 3];
+				knob_data[i + 0] = b;
+				knob_data[i + 1] = g;
+				knob_data[i + 2] = r;
+				knob_data[i + 3] = a;
+			}
+		}
+	}
+	result = gdk_pixbuf_new_from_data (knob_data, GDK_COLORSPACE_RGB, TRUE, 8, cairo_image_surface_get_width (surface), cairo_image_surface_get_height (surface), cairo_image_surface_get_stride (surface), NULL, NULL);
+	return result;
+}
+
+
+
+