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/*
Copyright (C) 2003 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __gtk_ardour_time_axis_view_item_h__
#define __gtk_ardour_time_axis_view_item_h__
#include <string>
#include <gdk/gdk.h>
#include <gdkmm/color.h>
#include <pangomm/fontdescription.h>
#include "pbd/signals.h"
#include "selectable.h"
class TimeAxisView;
namespace ArdourCanvas {
class Pixbuf;
class Rectangle;
class Item;
class Container;
class Text;
}
using ARDOUR::framepos_t;
using ARDOUR::framecnt_t;
/**
* Base class for items that may appear upon a TimeAxisView.
*/
class TimeAxisViewItem : public Selectable, public PBD::ScopedConnectionList
{
public:
virtual ~TimeAxisViewItem();
virtual bool set_position(framepos_t, void*, double* delta = 0);
framepos_t get_position() const;
virtual bool set_duration(framecnt_t, void*);
framecnt_t get_duration() const;
virtual void set_max_duration(framecnt_t, void*);
framecnt_t get_max_duration() const;
virtual void set_min_duration(framecnt_t, void*);
framecnt_t get_min_duration() const;
virtual void set_position_locked(bool, void*);
bool get_position_locked() const;
void set_max_duration_active(bool, void*);
bool get_max_duration_active() const;
void set_min_duration_active(bool, void*);
bool get_min_duration_active() const;
void set_item_name(std::string, void*);
virtual std::string get_item_name() const;
virtual void set_selected(bool yn);
void set_sensitive (bool yn) { _sensitive = yn; }
bool sensitive () const { return _sensitive; }
TimeAxisView& get_time_axis_view () const;
void set_name_text(const std::string&);
virtual void set_height(double h);
virtual double height() const { return _height; }
void set_y (double);
void set_color (uint32_t);
void set_name_text_color ();
virtual uint32_t get_fill_color () const;
ArdourCanvas::Item* get_canvas_frame();
ArdourCanvas::Item* get_canvas_group();
ArdourCanvas::Item* get_name_highlight();
virtual void set_samples_per_pixel (double);
double get_samples_per_pixel () const;
virtual void drag_start();
virtual void drag_end();
bool dragging() const { return _dragging; }
virtual void raise () { return; }
virtual void raise_to_top () { return; }
virtual void lower () { return; }
virtual void lower_to_bottom () { return; }
/** @return true if the name area should respond to events */
bool name_active() const { return name_connected; }
// Default sizes, font and spacing
static Pango::FontDescription NAME_FONT;
static void set_constant_heights ();
static const double NAME_X_OFFSET;
static const double GRAB_HANDLE_TOP;
static const double GRAB_HANDLE_WIDTH;
/* these are not constant, but vary with the pixel size
of the font used to display the item name.
*/
static int NAME_HEIGHT;
static double NAME_Y_OFFSET;
static double NAME_HIGHLIGHT_SIZE;
static double NAME_HIGHLIGHT_THRESH;
/**
* Emitted when this Group has been removed.
* This is different to the CatchDeletion signal in that this signal
* is emitted during the deletion of this Time Axis, and not during
* the destructor, this allows us to capture the source of the deletion
* event
*/
sigc::signal<void,std::string,void*> ItemRemoved;
/** Emitted when the name of this item is changed */
sigc::signal<void,std::string,std::string,void*> NameChanged;
/** Emiited when the position of this item changes */
sigc::signal<void,framepos_t,void*> PositionChanged;
/** Emitted when the position lock of this item is changed */
sigc::signal<void,bool,void*> PositionLockChanged;
/** Emitted when the duration of this item changes */
sigc::signal<void,framecnt_t,void*> DurationChanged;
/** Emitted when the maximum item duration is changed */
sigc::signal<void,framecnt_t,void*> MaxDurationChanged;
/** Emitted when the mionimum item duration is changed */
sigc::signal<void,framecnt_t,void*> MinDurationChanged;
enum Visibility {
ShowFrame = 0x1,
ShowNameHighlight = 0x2,
ShowNameText = 0x4,
ShowHandles = 0x8,
HideFrameLeft = 0x10,
HideFrameRight = 0x20,
HideFrameTB = 0x40,
FullWidthNameHighlight = 0x80
};
protected:
TimeAxisViewItem (const std::string &, ArdourCanvas::Item&, TimeAxisView&, double, uint32_t fill_color,
framepos_t, framecnt_t, bool recording = false, bool automation = false, Visibility v = Visibility (0));
TimeAxisViewItem (const TimeAxisViewItem&);
void init (ArdourCanvas::Item*, double, uint32_t, framepos_t, framepos_t, Visibility, bool, bool);
virtual bool canvas_group_event (GdkEvent*);
virtual void set_colors();
virtual void set_frame_color();
virtual void set_frame_gradient ();
void set_trim_handle_colors();
virtual void reset_width_dependent_items (double);
static gint idle_remove_this_item(TimeAxisViewItem*, void*);
/** time axis that this item is on */
TimeAxisView& trackview;
/** indicates whether this item is locked to its current position */
bool position_locked;
/** position of this item on the timeline */
framepos_t frame_position;
/** duration of this item upon the timeline */
framecnt_t item_duration;
/** maximum duration that this item can have */
framecnt_t max_item_duration;
/** minimum duration that this item can have */
framecnt_t min_item_duration;
/** indicates whether the max duration constraint is active */
bool max_duration_active;
/** indicates whether the min duration constraint is active */
bool min_duration_active;
/** frames per canvas pixel */
double samples_per_pixel;
/** should the item respond to events */
bool _sensitive;
/**
* The unique item name of this Item.
* Each item upon a time axis must have a unique id.
*/
std::string item_name;
/** true if the name should respond to events */
bool name_connected;
uint32_t fill_color;
uint32_t last_item_width;
int name_text_width;
bool wide_enough_for_name;
bool high_enough_for_name;
ArdourCanvas::Container* group;
ArdourCanvas::Rectangle* frame;
ArdourCanvas::Rectangle* selection_frame;
ArdourCanvas::Text* name_text;
ArdourCanvas::Rectangle* name_highlight;
/* with these two values, if frame_handle_start == 0 then frame_handle_end will also be 0 */
ArdourCanvas::Rectangle* frame_handle_start; ///< `frame' (fade) handle for the start of the item, or 0
ArdourCanvas::Rectangle* frame_handle_end; ///< `frame' (fade) handle for the end of the item, or 0
bool frame_handle_crossing (GdkEvent*, ArdourCanvas::Rectangle*);
double _height;
Visibility visibility;
std::string fill_color_name;
bool _recregion;
bool _automation; ///< true if this is an automation region view
bool _dragging;
double _width;
private:
void parameter_changed (std::string);
void manage_name_highlight ();
void manage_name_text ();
}; /* class TimeAxisViewItem */
#endif /* __gtk_ardour_time_axis_view_item_h__ */
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