2 Copyright (C) 2003 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef __ardour_imageframe_time_axis_group_h__
22 #define __ardour_imageframe_time_axis_group_h__
28 #include <gtk-canvas.h>
29 #include <jack/jack.h>
30 #include "imageframe_time_axis_view.h"
33 class ImageFrameView ;
36 * ImageFrameTimeAxisGroup defines a group/scene of ImageFrame view that can appear upon a time axis
37 * At the moment this is a bit bare, we really want to add some kind of time constraints upon
38 * items atht are added to the group, ie bounded by the start and end of the scene, which itself
40 * A viewable object may also be useful...
43 class ImageFrameTimeAxisGroup : public sigc::trackable
46 //---------------------------------------------------------------------------------------//
47 // Constructor / Desctructor
50 * Constructs a new ImageFrameTimeAxisGroup.
52 * @param iftav the parent ImageFrameTimeAxis of this view helper
53 * @param group_id the unique name/id of this group
55 ImageFrameTimeAxisGroup(ImageFrameTimeAxisView& iftav, std::string group_id) ;
59 * Responsible for destroying any Items that may have been added to this group
62 virtual ~ImageFrameTimeAxisGroup() ;
65 //---------------------------------------------------------------------------------------//
66 // Name/Id Accessors/Mutators
69 * Set the name/Id of this group.
71 * @param new_name the new name of this group
72 * @param src the identity of the object that initiated the change
74 void set_group_name(std::string new_name, void* src) ;
77 * Returns the id of this group
78 * The group id must be unique upon a time axis
80 * @return the id of this group
82 std::string get_group_name() const ;
85 //---------------------------------------------------------------------------------------//
86 // Parent/Child helper object accessors
89 * Returns the TimeAxisView thatt his object is acting as a helper for
91 * @return the TimeAxisView that this object is acting as a view helper for
93 ImageFrameTimeAxisView& get_view() const { return _view_helper ; }
97 //---------------------------------------------------------------------------------------//
101 * Sets the height of the time axis view and the item upon it
103 * @param height the new height
105 int set_item_heights(gdouble) ;
108 * Sets the current samples per unit.
109 * this method tells each item upon the time axis of the change
111 * @param spu the new samples per canvas unit value
113 int set_item_samples_per_units(gdouble spu) ;
116 * Sets the color of the items contained uopn this view helper
118 * @param color the new base color
120 void apply_item_color(GdkColor&) ;
123 //---------------------------------------------------------------------------------------//
124 // child ImageFrameView methods
127 * Adds an ImageFrameView to the list of items upon this time axis view helper
128 * the new ImageFrameView is returned
130 * @param item_id the unique id of the new item
131 * @param image_id the id/name of the image data we are usin
132 * @param start the position the new item should be placed upon the time line
133 * @param duration the duration the new item should be placed upon the timeline
134 * @param rgb_data the rgb data of the image
135 * @param width the original image width of the rgb_data (not the size to display)
136 * @param height the irigianl height of the rgb_data
137 * @param num_channels the number of channles within the rgb_data
138 * @param src the identity of the object that initiated the change
140 ImageFrameView* add_imageframe_item(std::string item_id, jack_nframes_t start, jack_nframes_t duration, unsigned char* rgb_data, uint32_t width, uint32_t height, uint32_t num_channels, void* src) ;
143 * Returns the named ImageFrameView or 0 if the named view does not exist on this view helper
145 * @param item_id the unique id of the item to search for
146 * @return the named ImageFrameView, or 0 if it is not held upon this view
148 ImageFrameView* get_named_imageframe_item(std::string item_id) ;
151 * Removes the currently selected ImageFrameView
153 * @param src the identity of the object that initiated the change
154 * @see add_imageframe_view
156 void remove_selected_imageframe_item(void* src) ;
159 * Removes and returns the named ImageFrameView from the list of ImageFrameViews held by this view helper
161 * @param item_id the ImageFrameView unique id to remove
162 * @param src the identity of the object that initiated the change
163 * @see add_imageframe_view
165 ImageFrameView* remove_named_imageframe_item(std::string item_id, void* src) ;
168 * Removes ifv from the list of ImageFrameViews upon this TimeAxis.
169 * if ifv is not upon this TimeAxis, this method takes no action
171 * @param ifv the ImageFrameView to remove
173 void remove_imageframe_item(ImageFrameView*, void* src) ;
176 //---------------------------------------------------------------------------------------//
177 // Selected group methods
180 // removed in favour of a track level selectewd item
181 // this is simply easier to manage a singularly selected item, rather than
182 // a selected item within each group
185 * Sets the currently selected item upon this time axis
187 * @param ifv the item to set selected
189 //void set_selected_imageframe_item(ImageFrameView* ifv) ;
192 * Sets the currently selected item upon this time axis to the named item
194 * @param item_id the name/id of the item to set selected
196 //void set_selected_imageframe_item(std::string item_id) ;
199 * Returns the currently selected item upon this time axis
201 * @return the currently selected item pon this time axis
203 //ImageFrameView* get_selected_imageframe_item() ;
206 * Returns whether this grou pis currently selected
208 * @returns true if this group is currently selected
210 bool get_selected() const ;
213 * Sets he selected state of this group
215 * @param yn set true if this group is selected, false otherwise
217 void set_selected(bool yn) ;
219 //---------------------------------------------------------------------------------------//
220 // Handle group removal
223 * Handles the Removal of this VisualTimeAxis
224 * This _needs_ to be called to alert others of the removal properly, ie where the source
225 * of the removal came from.
227 * XXX Although im not too happy about this method of doing things, I cant think of a cleaner method
228 * just now to capture the source of the removal
230 * @param src the identity of the object that initiated the change
232 virtual void remove_this_group(void* src) ;
234 //---------------------------------------------------------------------------------//
237 sigc::signal<void> GoingAway ;
240 * Emitted when this Group has been removed
241 * This is different to the GoingAway signal in that this signal
242 * is emitted during the deletion of this Time Axis, and not during
243 * the destructor, this allows us to capture the source of the deletion
246 sigc::signal<void,std::string,void*> GroupRemoved ;
248 /** Emitted when we have changed the name of this TimeAxis */
249 sigc::signal<void,std::string,std::string,void*> NameChanged ;
251 /** Emitted when an ImageFrameView is added to this group */
252 sigc::signal<void, ImageFrameView*, void*> ImageFrameAdded ;
254 /** Emitted when an ImageFrameView is removed from this group */
255 sigc::signal<void, std::string&, std::string&, std::string&, void*> ImageFrameRemoved ;
262 * convenience method to re-get the samples per unit and tell items upon this view
265 void reset_samples_per_unit() ;
268 * Callback used to remove this group during the gtk idle loop
269 * This is used to avoid deleting the obejct while inside the remove_this_group
272 * @param group the ImageFrameTimeAxisGroup to remove
273 * @param src the identity of the object that initiated the change
275 static gint idle_remove_this_group(ImageFrameTimeAxisGroup* group, void* src) ;
277 /** The list of ImageFrameViews held by this view helper */
278 typedef std::list<ImageFrameView *> ImageFrameViewList ;
279 ImageFrameViewList imageframe_views ;
281 /** the currently selected time axis item upon this time axis */
282 ImageFrameView* selected_imageframe_item ;
284 /** the view helper that this object is acting as a container upon on */
285 ImageFrameTimeAxisView& _view_helper ;
287 /** the is of this group */
288 std::string _group_id ;
290 /* XXX why are these different? */
291 GdkColor region_color ;
292 uint32_t stream_base_color ;
294 /** indicates if this group is currently selected */
297 } ; /* class ImageFrameTimeAxisGroup */
299 #endif /* __ardour_imageframe_time_axis_group_h__ */