301 lines
9.7 KiB
C++
301 lines
9.7 KiB
C++
/*
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Copyright (C) 2003 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ardour_imageframe_time_axis_group_h__
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#define __ardour_imageframe_time_axis_group_h__
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#include <list>
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#include <cmath>
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#include <gdkmm/color.h>
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#include <libgnomecanvas/libgnomecanvas.h>
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#include <jack/jack.h>
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#include <ardour/types.h>
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#include "imageframe_time_axis_view.h"
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class PublicEditor ;
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class ImageFrameView ;
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/**
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* ImageFrameTimeAxisGroup defines a group/scene of ImageFrame view that can appear upon a time axis
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* At the moment this is a bit bare, we really want to add some kind of time constraints upon
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* items atht are added to the group, ie bounded by the start and end of the scene, which itself
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* needs fleshed out.
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* A viewable object may also be useful...
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*
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*/
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class ImageFrameTimeAxisGroup : public sigc::trackable
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{
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public:
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//---------------------------------------------------------------------------------------//
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// Constructor / Desctructor
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/**
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* Constructs a new ImageFrameTimeAxisGroup.
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*
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* @param iftav the parent ImageFrameTimeAxis of this view helper
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* @param group_id the unique name/id of this group
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*/
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ImageFrameTimeAxisGroup(ImageFrameTimeAxisView& iftav, const string & group_id) ;
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/**
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* Destructor
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* Responsible for destroying any Items that may have been added to this group
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*
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*/
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virtual ~ImageFrameTimeAxisGroup() ;
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//---------------------------------------------------------------------------------------//
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// Name/Id Accessors/Mutators
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/**
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* Set the name/Id of this group.
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*
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* @param new_name the new name of this group
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* @param src the identity of the object that initiated the change
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*/
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void set_group_name(const string & new_name, void* src) ;
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/**
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* Returns the id of this group
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* The group id must be unique upon a time axis
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*
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* @return the id of this group
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*/
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std::string get_group_name() const ;
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//---------------------------------------------------------------------------------------//
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// Parent/Child helper object accessors
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/**
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* Returns the TimeAxisView thatt his object is acting as a helper for
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*
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* @return the TimeAxisView that this object is acting as a view helper for
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*/
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ImageFrameTimeAxisView& get_view() const { return _view_helper ; }
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//---------------------------------------------------------------------------------------//
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// ui methods & data
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/**
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* Sets the height of the time axis view and the item upon it
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*
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* @param height the new height
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*/
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int set_item_heights(gdouble) ;
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/**
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* Sets the current samples per unit.
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* this method tells each item upon the time axis of the change
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*
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* @param spu the new samples per canvas unit value
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*/
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int set_item_samples_per_units(gdouble spu) ;
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/**
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* Sets the color of the items contained uopn this view helper
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*
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* @param color the new base color
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*/
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void apply_item_color(Gdk::Color&) ;
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//---------------------------------------------------------------------------------------//
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// child ImageFrameView methods
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/**
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* Adds an ImageFrameView to the list of items upon this time axis view helper
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* the new ImageFrameView is returned
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*
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* @param item_id the unique id of the new item
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* @param image_id the id/name of the image data we are usin
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* @param start the position the new item should be placed upon the time line
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* @param duration the duration the new item should be placed upon the timeline
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* @param rgb_data the rgb data of the image
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* @param width the original image width of the rgb_data (not the size to display)
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* @param height the irigianl height of the rgb_data
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* @param num_channels the number of channles within the rgb_data
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* @param src the identity of the object that initiated the change
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*/
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ImageFrameView* add_imageframe_item(const string & item_id, nframes_t start, nframes_t duration, unsigned char* rgb_data, uint32_t width, uint32_t height, uint32_t num_channels, void* src) ;
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/**
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* Returns the named ImageFrameView or 0 if the named view does not exist on this view helper
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*
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* @param item_id the unique id of the item to search for
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* @return the named ImageFrameView, or 0 if it is not held upon this view
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*/
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ImageFrameView* get_named_imageframe_item(const string & item_id) ;
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/**
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* Removes the currently selected ImageFrameView
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*
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* @param src the identity of the object that initiated the change
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* @see add_imageframe_view
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*/
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void remove_selected_imageframe_item(void* src) ;
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/**
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* Removes and returns the named ImageFrameView from the list of ImageFrameViews held by this view helper
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*
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* @param item_id the ImageFrameView unique id to remove
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* @param src the identity of the object that initiated the change
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* @see add_imageframe_view
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*/
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ImageFrameView* remove_named_imageframe_item(const string & item_id, void* src) ;
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/**
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* Removes ifv from the list of ImageFrameViews upon this TimeAxis.
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* if ifv is not upon this TimeAxis, this method takes no action
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*
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* @param ifv the ImageFrameView to remove
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*/
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void remove_imageframe_item(ImageFrameView*, void* src) ;
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//---------------------------------------------------------------------------------------//
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// Selected group methods
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// removed in favour of a track level selectewd item
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// this is simply easier to manage a singularly selected item, rather than
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// a selected item within each group
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/**
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* Sets the currently selected item upon this time axis
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*
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* @param ifv the item to set selected
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*/
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//void set_selected_imageframe_item(ImageFrameView* ifv) ;
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/**
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* Sets the currently selected item upon this time axis to the named item
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*
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* @param item_id the name/id of the item to set selected
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*/
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//void set_selected_imageframe_item(std::string item_id) ;
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/**
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* Returns the currently selected item upon this time axis
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*
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* @return the currently selected item pon this time axis
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*/
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//ImageFrameView* get_selected_imageframe_item() ;
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/**
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* Returns whether this grou pis currently selected
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*
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* @returns true if this group is currently selected
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*/
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bool get_selected() const ;
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/**
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* Sets he selected state of this group
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*
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* @param yn set true if this group is selected, false otherwise
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*/
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void set_selected(bool yn) ;
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//---------------------------------------------------------------------------------------//
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// Handle group removal
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/**
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* Handles the Removal of this VisualTimeAxis
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* This _needs_ to be called to alert others of the removal properly, ie where the source
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* of the removal came from.
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*
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* XXX Although im not too happy about this method of doing things, I cant think of a cleaner method
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* just now to capture the source of the removal
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*
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* @param src the identity of the object that initiated the change
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*/
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virtual void remove_this_group(void* src) ;
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//---------------------------------------------------------------------------------//
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// Emitted Signals
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sigc::signal<void> GoingAway ;
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/**
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* Emitted when this Group has been removed
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* This is different to the GoingAway signal in that this signal
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* is emitted during the deletion of this Time Axis, and not during
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* the destructor, this allows us to capture the source of the deletion
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* event
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*/
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sigc::signal<void,std::string,void*> GroupRemoved ;
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/** Emitted when we have changed the name of this TimeAxis */
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sigc::signal<void,std::string,std::string,void*> NameChanged ;
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/** Emitted when an ImageFrameView is added to this group */
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sigc::signal<void, ImageFrameView*, void*> ImageFrameAdded ;
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/** Emitted when an ImageFrameView is removed from this group */
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sigc::signal<void, const string &, const string &, const string &, void*> ImageFrameRemoved ;
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protected:
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private:
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/**
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* convenience method to re-get the samples per unit and tell items upon this view
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*
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*/
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void reset_samples_per_unit() ;
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/**
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* Callback used to remove this group during the gtk idle loop
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* This is used to avoid deleting the obejct while inside the remove_this_group
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* method
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*
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* @param group the ImageFrameTimeAxisGroup to remove
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* @param src the identity of the object that initiated the change
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*/
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static gint idle_remove_this_group(ImageFrameTimeAxisGroup* group, void* src) ;
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/** The list of ImageFrameViews held by this view helper */
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typedef std::list<ImageFrameView *> ImageFrameViewList ;
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ImageFrameViewList imageframe_views ;
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/** the currently selected time axis item upon this time axis */
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ImageFrameView* selected_imageframe_item ;
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/** the view helper that this object is acting as a container upon on */
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ImageFrameTimeAxisView& _view_helper ;
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/** the is of this group */
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std::string _group_id ;
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/* XXX why are these different? */
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Gdk::Color region_color ;
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uint32_t stream_base_color ;
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/** indicates if this group is currently selected */
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bool is_selected ;
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} ; /* class ImageFrameTimeAxisGroup */
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#endif /* __ardour_imageframe_time_axis_group_h__ */
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