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

2 files changed, 264 insertions, 0 deletions

diff --git a/libs/gtkmm2ext/gtkmm2ext/motionfeedback.h b/libs/gtkmm2ext/gtkmm2ext/motionfeedback.h
index cb256bed22..348cfbc25f 100644
--- a/libs/gtkmm2ext/gtkmm2ext/motionfeedback.h
+++ b/libs/gtkmm2ext/gtkmm2ext/motionfeedback.h
@@ -25,6 +25,7 @@
 #include <gtkmm/eventbox.h>
 
 #include "gtkmm2ext/binding_proxy.h"
+#include "gtkmm2ext/prolooks-helpers.h"
 
 namespace Gtk {
 	class Adjustment;
@@ -62,6 +63,7 @@ class MotionFeedback : public Gtk::VBox
 	gfloat range () { return _range; }
 
 	void set_controllable (boost::shared_ptr<PBD::Controllable> c) { binding_proxy.set_controllable (c); }
+        void set_lamp_color (const Gdk::Color&);
 
  protected:
 	gfloat _range;
@@ -100,6 +102,11 @@ class MotionFeedback : public Gtk::VBox
         int subwidth;
         int subheight;
 	void adjustment_changed ();
+
+	ProlooksHSV* lamp_hsv;
+        Gdk::Color _lamp_color;
+
+        void core_draw (cairo_t*, int, double, double, double);
 };
 
 } /* namespace */
diff --git a/libs/gtkmm2ext/gtkmm2ext/prolooks-helpers.h b/libs/gtkmm2ext/gtkmm2ext/prolooks-helpers.h
new file mode 100644
index 0000000000..4f1ed780e3
--- /dev/null
+++ b/libs/gtkmm2ext/gtkmm2ext/prolooks-helpers.h
@@ -0,0 +1,257 @@
+/* Helpers.c generated by valac, the Vala compiler */
+
+/* 
+    Copyright 2009 by Hans Baier
+    License: LGPLv2+ 
+*/
+
+#ifndef __prolooks_helpers_h__
+#define __prolooks_helpers_h__
+
+#include <glib.h>
+#include <glib-object.h>
+#include <float.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include <cairo.h>
+#include <gdk/gdk.h>
+#include <gdk-pixbuf/gdk-pixdata.h>
+#include <gobject/gvaluecollector.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CAIRO_TYPE_COLOR (cairo_color_get_type ())
+#define CAIRO_COLOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CAIRO_TYPE_COLOR, CairoColor))
+#define CAIRO_COLOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CAIRO_TYPE_COLOR, CairoColorClass))
+#define CAIRO_IS_COLOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CAIRO_TYPE_COLOR))
+#define CAIRO_IS_COLOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CAIRO_TYPE_COLOR))
+#define CAIRO_COLOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CAIRO_TYPE_COLOR, CairoColorClass))
+
+typedef struct _CairoColor CairoColor;
+typedef struct _CairoColorClass CairoColorClass;
+typedef struct _CairoColorPrivate CairoColorPrivate;
+
+#define PROLOOKS_TYPE_HSL (prolooks_hsl_get_type ())
+#define PROLOOKS_HSL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PROLOOKS_TYPE_HSL, ProlooksHSL))
+#define PROLOOKS_HSL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PROLOOKS_TYPE_HSL, ProlooksHSLClass))
+#define PROLOOKS_IS_HSL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PROLOOKS_TYPE_HSL))
+#define PROLOOKS_IS_HSL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PROLOOKS_TYPE_HSL))
+#define PROLOOKS_HSL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PROLOOKS_TYPE_HSL, ProlooksHSLClass))
+
+typedef struct _ProlooksHSL ProlooksHSL;
+typedef struct _ProlooksHSLClass ProlooksHSLClass;
+#define _prolooks_hsl_unref0(var) ((var == NULL) ? NULL : (var = (prolooks_hsl_unref (var), NULL)))
+#define _cairo_color_unref0(var) ((var == NULL) ? NULL : (var = (cairo_color_unref (var), NULL)))
+typedef struct _CairoParamSpecColor CairoParamSpecColor;
+
+#define PROLOOKS_TYPE_BUTTON_STATE (prolooks_button_state_get_type ())
+
+#define PROLOOKS_TYPE_BUTTON_TYPE (prolooks_button_type_get_type ())
+#define _cairo_pattern_destroy0(var) ((var == NULL) ? NULL : (var = (cairo_pattern_destroy (var), NULL)))
+typedef struct _ProlooksHSLPrivate ProlooksHSLPrivate;
+typedef struct _ProlooksParamSpecHSL ProlooksParamSpecHSL;
+
+#define PROLOOKS_TYPE_HSV (prolooks_hsv_get_type ())
+#define PROLOOKS_HSV(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PROLOOKS_TYPE_HSV, ProlooksHSV))
+#define PROLOOKS_HSV_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PROLOOKS_TYPE_HSV, ProlooksHSVClass))
+#define PROLOOKS_IS_HSV(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PROLOOKS_TYPE_HSV))
+#define PROLOOKS_IS_HSV_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PROLOOKS_TYPE_HSV))
+#define PROLOOKS_HSV_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PROLOOKS_TYPE_HSV, ProlooksHSVClass))
+
+typedef struct _ProlooksHSV ProlooksHSV;
+typedef struct _ProlooksHSVClass ProlooksHSVClass;
+typedef struct _ProlooksHSVPrivate ProlooksHSVPrivate;
+typedef struct _ProlooksParamSpecHSV ProlooksParamSpecHSV;
+
+struct _CairoColor {
+	GTypeInstance parent_instance;
+	volatile int ref_count;
+	CairoColorPrivate * priv;
+};
+
+struct _CairoColorClass {
+	GTypeClass parent_class;
+	void (*finalize) (CairoColor *self);
+};
+
+struct _CairoColorPrivate {
+	double _red;
+	double _green;
+	double _blue;
+	double _alpha;
+};
+
+struct _CairoParamSpecColor {
+	GParamSpec parent_instance;
+};
+
+typedef enum  {
+	PROLOOKS_BUTTON_STATE_NORMAL,
+	PROLOOKS_BUTTON_STATE_PRESSED
+} ProlooksButtonState;
+
+typedef enum  {
+	PROLOOKS_BUTTON_TYPE_PRESS_BUTTON,
+	PROLOOKS_BUTTON_TYPE_TOGGLE_BUTTON
+} ProlooksButtonType;
+
+struct _ProlooksHSL {
+	GTypeInstance parent_instance;
+	volatile int ref_count;
+	ProlooksHSLPrivate * priv;
+};
+
+struct _ProlooksHSLClass {
+	GTypeClass parent_class;
+	void (*finalize) (ProlooksHSL *self);
+};
+
+struct _ProlooksHSLPrivate {
+	double _hue;
+	double _saturation;
+	double _lightness;
+};
+
+struct _ProlooksParamSpecHSL {
+	GParamSpec parent_instance;
+};
+
+struct _ProlooksHSV {
+	GTypeInstance parent_instance;
+	volatile int ref_count;
+	ProlooksHSVPrivate * priv;
+};
+
+struct _ProlooksHSVClass {
+	GTypeClass parent_class;
+	void (*finalize) (ProlooksHSV *self);
+};
+
+struct _ProlooksHSVPrivate {
+	double _hue;
+	double _saturation;
+	double _value;
+};
+
+struct _ProlooksParamSpecHSV {
+	GParamSpec parent_instance;
+};
+
+
+static gpointer cairo_color_parent_class = NULL;
+static gpointer prolooks_hsl_parent_class = NULL;
+static gpointer prolooks_hsv_parent_class = NULL;
+
+gpointer cairo_color_ref (gpointer instance);
+void cairo_color_unref (gpointer instance);
+GParamSpec* cairo_param_spec_color (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags);
+void cairo_value_set_color (GValue* value, gpointer v_object);
+void cairo_value_take_color (GValue* value, gpointer v_object);
+gpointer cairo_value_get_color (const GValue* value);
+GType cairo_color_get_type (void);
+#define CAIRO_COLOR_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), CAIRO_TYPE_COLOR, CairoColorPrivate))
+enum  {
+	CAIRO_COLOR_DUMMY_PROPERTY
+};
+void cairo_color_set_red (CairoColor* self, double value);
+void cairo_color_set_green (CairoColor* self, double value);
+void cairo_color_set_blue (CairoColor* self, double value);
+void cairo_color_set_alpha (CairoColor* self, double value);
+CairoColor* cairo_color_new (double red, double green, double blue, double alpha);
+CairoColor* cairo_color_construct (GType object_type, double red, double green, double blue, double alpha);
+double cairo_color_get_red (CairoColor* self);
+double cairo_color_get_green (CairoColor* self);
+double cairo_color_get_blue (CairoColor* self);
+double cairo_color_get_alpha (CairoColor* self);
+CairoColor* cairo_color_copy (CairoColor* self);
+void cairo_color_set_from_string (CairoColor* self, const char* webcolor);
+CairoColor* cairo_color_new_from_string (const char* webcolor);
+CairoColor* cairo_color_construct_from_string (GType object_type, const char* webcolor);
+ProlooksHSL* prolooks_hsl_new (void);
+ProlooksHSL* prolooks_hsl_construct (GType object_type);
+gpointer prolooks_hsl_ref (gpointer instance);
+void prolooks_hsl_unref (gpointer instance);
+GParamSpec* prolooks_param_spec_hsl (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags);
+void prolooks_value_set_hsl (GValue* value, gpointer v_object);
+void prolooks_value_take_hsl (GValue* value, gpointer v_object);
+gpointer prolooks_value_get_hsl (const GValue* value);
+GType prolooks_hsl_get_type (void);
+void prolooks_hsl_from_cairo_color (ProlooksHSL* self, CairoColor* color);
+double prolooks_hsl_get_lightness (ProlooksHSL* self);
+void prolooks_hsl_set_lightness (ProlooksHSL* self, double value);
+double prolooks_hsl_get_saturation (ProlooksHSL* self);
+void prolooks_hsl_set_saturation (ProlooksHSL* self, double value);
+CairoColor* prolooks_hsl_to_cairo_color (ProlooksHSL* self);
+CairoColor* cairo_color_shade (CairoColor* self, double shade_factor);
+void cairo_color_set_to (CairoColor* self, CairoColor* a_color);
+void cairo_color_set_as_source_in (CairoColor* self, cairo_t* cr);
+void cairo_color_add_color_stop_to (CairoColor* self, cairo_pattern_t* p, double offset);
+CairoColor* prolooks_gdk_color_to_cairo (GdkColor* color);
+void prolooks_color_from_string (const char* webcolor, GdkColor* result);
+static void cairo_color_finalize (CairoColor* obj);
+GType prolooks_button_state_get_type (void);
+GType prolooks_button_type_get_type (void);
+void prolooks_set_line_width_from_device (cairo_t* cr);
+char* prolooks_color_to_string (GdkColor* color);
+CairoColor* prolooks_cairo_color_from_string (const char* webcolor);
+void prolooks_set_source_color (cairo_t* cr, GdkColor* color, double alpha);
+void prolooks_gdk_color_to_cairo_color (GdkColor* color, double* red, double* green, double* blue);
+void prolooks_cairo_color_to_gdk (CairoColor* cairo_color, GdkColor* result);
+void prolooks_set_source_color_string (cairo_t* cr, const char* color, double alpha);
+void prolooks_add_color_stop (cairo_pattern_t* p, double offset, GdkColor* color, double alpha);
+void prolooks_add_color_stop_str (cairo_pattern_t* p, double offset, const char* color, double 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* prolooks_create_gradient_str (double x1, double y1, double x2, double y2, const char* start, const char* stop, double alpha_start, double alpha_stop);
+void prolooks_rounded_rect (cairo_t* cr, double x, double y, double w, double h, double radius_x, double radius_y);
+void prolooks_background_gradient (cairo_t* cr, double w, double h);
+double prolooks_modula (double number, double divisor);
+#define PROLOOKS_HSL_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), PROLOOKS_TYPE_HSL, ProlooksHSLPrivate))
+enum  {
+	PROLOOKS_HSL_DUMMY_PROPERTY
+};
+double prolooks_hsl_get_hue (ProlooksHSL* self);
+char* prolooks_hsl_to_string (ProlooksHSL* self);
+void prolooks_hsl_to_gdk_color (ProlooksHSL* self, GdkColor* result);
+void prolooks_hsl_from_gdk_color (ProlooksHSL* self, GdkColor* color);
+void prolooks_hsl_set_hue (ProlooksHSL* self, double value);
+static void prolooks_hsl_finalize (ProlooksHSL* obj);
+gpointer prolooks_hsv_ref (gpointer instance);
+void prolooks_hsv_unref (gpointer instance);
+GParamSpec* prolooks_param_spec_hsv (const gchar* name, const gchar* nick, const gchar* blurb, GType object_type, GParamFlags flags);
+void prolooks_value_set_hsv (GValue* value, gpointer v_object);
+void prolooks_value_take_hsv (GValue* value, gpointer v_object);
+gpointer prolooks_value_get_hsv (const GValue* value);
+GType prolooks_hsv_get_type (void);
+#define PROLOOKS_HSV_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), PROLOOKS_TYPE_HSV, ProlooksHSVPrivate))
+enum  {
+	PROLOOKS_HSV_DUMMY_PROPERTY
+};
+double prolooks_hsv_get_hue (ProlooksHSV* self);
+double prolooks_hsv_get_saturation (ProlooksHSV* self);
+double prolooks_hsv_get_value (ProlooksHSV* self);
+char* prolooks_hsv_to_string (ProlooksHSV* self);
+void prolooks_hsv_from_gdk_color (ProlooksHSV* self, GdkColor* color);
+ProlooksHSV* prolooks_hsv_new_for_gdk_color (GdkColor* color);
+ProlooksHSV* prolooks_hsv_construct_for_gdk_color (GType object_type, GdkColor* color);
+void prolooks_hsv_from_cairo_color (ProlooksHSV* self, CairoColor* color);
+ProlooksHSV* prolooks_hsv_new_for_cairo_color (CairoColor* color);
+ProlooksHSV* prolooks_hsv_construct_for_cairo_color (GType object_type, CairoColor* color);
+CairoColor* prolooks_hsv_to_cairo_color (ProlooksHSV* self);
+void prolooks_hsv_to_gdk_color (ProlooksHSV* self, GdkColor* result);
+void prolooks_hsv_set_value (ProlooksHSV* self, double value);
+void prolooks_hsv_set_hue (ProlooksHSV* self, double value);
+void prolooks_hsv_set_saturation (ProlooksHSV* self, double value);
+ProlooksHSV* prolooks_hsv_new (void);
+ProlooksHSV* prolooks_hsv_construct (GType object_type);
+static void prolooks_hsv_finalize (ProlooksHSV* obj);
+void prolooks_shade_color (GdkColor* orig, double shade_ratio, GdkColor* result);
+GdkPixbuf* prolooks_cairo_image_surface_to_pixbuf (cairo_surface_t* surface);
+
+#ifdef __cplusplus
+} // extern "C" 
+#endif
+
+#endif /* __prolooks_helpers_h__ */