src/widgets/sp-color-selector.h

	sp-color-selector.h revision f4f507228b30d55fd7e39386ba513f3a0a54bd5d
#ifndef __SP_COLOR_SELECTOR_H__
#define __SP_COLOR_SELECTOR_H__

#include <gtk/gtkvbox.h>
#include "../color.h"

#include <glib.h>


struct SPColorSelector;

class ColorSelector
{
public:
    ColorSelector( SPColorSelector* csel );
    virtual ~ColorSelector();

    virtual void init();

    void setColor( const SPColor& color );
    SPColor getColor() const;

    void setAlpha( gfloat alpha );
    gfloat getAlpha() const;

    void setColorAlpha( const SPColor& color, gfloat alpha, bool emit = false );
    void getColorAlpha( SPColor& color, gfloat* alpha ) const;

    virtual void setSubmode( guint submode );
    virtual guint getSubmode() const;

    virtual SPColorSpaceType getColorspace() const;
    virtual gboolean setColorspace( SPColorSpaceType colorspace );

protected:
    void _grabbed();
    void _released();
    void _updateInternals( const SPColor& color, gfloat alpha, gboolean held );
    gboolean _isHeld() const { return _held; }

    virtual void _colorChanged( const SPColor& color, gfloat alpha );

    static double _epsilon;

    SPColorSelector* _csel;
    SPColor _color;
    gfloat _alpha;  /* guaranteed to be in [0, 1]. */

private:
    // By default, disallow copy constructor and assignment operator
    ColorSelector( const ColorSelector& obj );
    ColorSelector& operator=( const ColorSelector& obj );

    gboolean _held;

    bool virgin; // if true, no color is set yet
};


#define SP_TYPE_COLOR_SELECTOR (sp_color_selector_get_type ())
#define SP_COLOR_SELECTOR(o) (GTK_CHECK_CAST ((o), SP_TYPE_COLOR_SELECTOR, SPColorSelector))
#define SP_COLOR_SELECTOR_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), SP_TYPE_COLOR_SELECTOR, SPColorSelectorClass))
#define SP_IS_COLOR_SELECTOR(o) (GTK_CHECK_TYPE ((o), SP_TYPE_COLOR_SELECTOR))
#define SP_IS_COLOR_SELECTOR_CLASS(k) (GTK_CHECK_CLASS_TYPE ((k), SP_TYPE_COLOR_SELECTOR))
#define SP_COLOR_SELECTOR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), SP_TYPE_COLOR_SELECTOR, SPColorSelectorClass))

struct SPColorSelector {
    GtkVBox vbox;

    ColorSelector* base;
};

struct SPColorSelectorClass {
    GtkVBoxClass parent_class;

    const gchar **name;
    guint submode_count;

    void (* grabbed) (SPColorSelector *rgbsel);
    void (* dragged) (SPColorSelector *rgbsel);
    void (* released) (SPColorSelector *rgbsel);
    void (* changed) (SPColorSelector *rgbsel);

};

GType sp_color_selector_get_type (void);

GtkWidget *sp_color_selector_new (GType selector_type, SPColorSpaceType colorspace);


#endif