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.
23 #include <ardour/region.h>
24 #include <gtkmmext/doi.h>
26 #include "canvas-simplerect.h"
27 #include "canvas-curve.h"
28 #include "crossfade_view.h"
29 #include "rgb_macros.h"
30 #include "audio_time_axis.h"
31 #include "public_editor.h"
32 #include "regionview.h"
36 using namespace ARDOUR;
37 using namespace Editing;
39 SigC::Signal1<void,CrossfadeView*> CrossfadeView::GoingAway;
41 CrossfadeView::CrossfadeView (GtkCanvasGroup *parent,
42 AudioTimeAxisView &tv,
45 GdkColor& basic_color,
46 AudioRegionView& lview,
47 AudioRegionView& rview)
50 : TimeAxisViewItem ("xf.name()", parent, tv, spu, basic_color, xf.position(),
51 xf.overlap_length(), TimeAxisViewItem::Visibility (TimeAxisViewItem::ShowFrame)),
60 fade_in = gtk_canvas_item_new (GTK_CANVAS_GROUP(group),
61 gtk_canvas_line_get_type(),
62 "fill_color_rgba", color_map[cCrossfadeLine],
63 "width_pixels", (guint) 1,
66 fade_out = gtk_canvas_item_new (GTK_CANVAS_GROUP(group),
67 gtk_canvas_line_get_type(),
68 "fill_color_rgba", color_map[cCrossfadeLine],
69 "width_pixels", (guint) 1,
72 set_height (get_time_axis_view().height);
74 /* no frame around the xfade or overlap rects */
76 gtk_canvas_item_set (frame, "outline_what", 0, NULL);
78 /* never show the vestigial frame */
80 gtk_canvas_item_hide (vestigial_frame);
81 show_vestigial = false;
83 gtk_object_set_data (GTK_OBJECT(group), "crossfadeview", this);
84 gtk_signal_connect (GTK_OBJECT(group), "event",
85 (GtkSignalFunc) PublicEditor::canvas_crossfade_view_event,
88 crossfade_changed (Change (~0));
90 crossfade.StateChanged.connect (slot (*this, &CrossfadeView::crossfade_changed));
93 CrossfadeView::~CrossfadeView ()
95 GoingAway (this) ; /* EMIT_SIGNAL */
99 CrossfadeView::get_item_name ()
102 // return crossfade.name();
106 CrossfadeView::reset_width_dependent_items (double pixel_width)
108 TimeAxisViewItem::reset_width_dependent_items (pixel_width);
112 if (pixel_width < 5) {
113 gtk_canvas_item_hide (fade_in);
114 gtk_canvas_item_hide (fade_out);
119 CrossfadeView::set_height (double height)
121 if (height == TimeAxisView::Smaller ||
122 height == TimeAxisView::Small)
123 TimeAxisViewItem::set_height (height - 3 );
125 TimeAxisViewItem::set_height (height - NAME_HIGHLIGHT_SIZE - 3 );
131 CrossfadeView::crossfade_changed (Change what_changed)
133 bool need_redraw_curves = false;
135 if (what_changed & BoundsChanged) {
136 set_position (crossfade.position(), this);
137 set_duration (crossfade.overlap_length(), this);
138 need_redraw_curves = true;
141 if (what_changed & Crossfade::ActiveChanged) {
142 /* calls redraw_curves */
144 } else if (need_redraw_curves) {
150 CrossfadeView::redraw_curves ()
152 GtkCanvasPoints* points;
159 At "height - 3.0" the bottom of the crossfade touches the name highlight or the bottom of the track (if the
160 track is either Small or Smaller.
162 switch(get_time_axis_view().height) {
163 case TimeAxisView::Smaller:
164 case TimeAxisView::Small:
165 h = get_time_axis_view().height - 3.0;
169 h = get_time_axis_view().height - NAME_HIGHLIGHT_SIZE - 3.0;
173 /* no space allocated yet */
177 npoints = get_time_axis_view().editor.frame_to_pixel (crossfade.length());
178 npoints = std::min (gdk_screen_width(), npoints);
180 if (!_visible || !crossfade.active() || npoints < 3) {
181 gtk_canvas_item_hide (fade_in);
182 gtk_canvas_item_hide (fade_out);
185 gtk_canvas_item_show (fade_in);
186 gtk_canvas_item_show (fade_out);
189 points = get_canvas_points ("xfade edit redraw", npoints);
190 vec = new float[npoints];
192 crossfade.fade_in().get_vector (0, crossfade.length(), vec, npoints);
193 for (int i = 0, pci = 0; i < npoints; ++i) {
194 points->coords[pci++] = i;
195 points->coords[pci++] = 2.0 + h - (h * vec[i]);
197 gtk_canvas_item_set (fade_in, "points", points, NULL);
199 crossfade.fade_out().get_vector (0, crossfade.length(), vec, npoints);
200 for (int i = 0, pci = 0; i < npoints; ++i) {
201 points->coords[pci++] = i;
202 points->coords[pci++] = 2.0 + h - (h * vec[i]);
204 gtk_canvas_item_set (fade_out, "points", points, NULL);
208 gtk_canvas_points_unref (points);
210 /* XXX this is ugly, but it will have to wait till Crossfades are reimplented
211 as regions. This puts crossfade views on top of a track, above all regions.
214 gtk_canvas_item_raise_to_top (group);
218 CrossfadeView::active_changed ()
220 if (crossfade.active()) {
221 gtk_canvas_item_set (frame, "fill_color_rgba", color_map[cActiveCrossfade], NULL);
223 gtk_canvas_item_set (frame, "fill_color_rgba", color_map[cInactiveCrossfade], NULL);
230 CrossfadeView::set_valid (bool yn)
236 CrossfadeView::upper_regionview () const
238 if (left_view.region.layer() > right_view.region.layer()) {
246 CrossfadeView::show ()
248 gtk_canvas_item_show (group);
253 CrossfadeView::hide ()
255 gtk_canvas_item_hide (group);
260 CrossfadeView::fake_hide ()
262 gtk_canvas_item_hide (group);