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 <gtkmm2ext/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 "audio_region_view.h"
34 #include "canvas_impl.h"
37 using namespace ARDOUR;
39 using namespace Editing;
40 using namespace Gnome;
41 using namespace Canvas;
43 sigc::signal<void,CrossfadeView*> CrossfadeView::GoingAway;
45 CrossfadeView::CrossfadeView (ArdourCanvas::Group *parent,
46 RouteTimeAxisView &tv,
49 Gdk::Color& basic_color,
50 AudioRegionView& lview,
51 AudioRegionView& rview)
54 : TimeAxisViewItem ("xfade" /*xf.name()*/, *parent, tv, spu, basic_color, xf.position(),
55 xf.overlap_length(), TimeAxisViewItem::Visibility (TimeAxisViewItem::ShowFrame)),
64 fade_in = new Line (*group);
65 fade_in->property_fill_color_rgba() = color_map[cCrossfadeLine];
66 fade_in->property_width_pixels() = 1;
68 fade_out = new Line (*group);
69 fade_out->property_fill_color_rgba() = color_map[cCrossfadeLine];
70 fade_out->property_width_pixels() = 1;
72 set_height (get_time_axis_view().height);
74 /* no frame around the xfade or overlap rects */
76 frame->property_outline_what() = 0;
78 /* never show the vestigial frame */
80 vestigial_frame->hide();
81 show_vestigial = false;
83 group->signal_event().connect (bind (mem_fun (tv.editor, &PublicEditor::canvas_crossfade_view_event), group, this));
85 crossfade_changed (Change (~0));
87 crossfade.StateChanged.connect (mem_fun(*this, &CrossfadeView::crossfade_changed));
90 CrossfadeView::~CrossfadeView ()
92 GoingAway (this) ; /* EMIT_SIGNAL */
96 CrossfadeView::reset_width_dependent_items (double pixel_width)
98 TimeAxisViewItem::reset_width_dependent_items (pixel_width);
102 if (pixel_width < 5) {
109 CrossfadeView::set_height (double height)
111 if (height == TimeAxisView::hSmaller ||
112 height == TimeAxisView::hSmall)
113 TimeAxisViewItem::set_height (height - 3 );
115 TimeAxisViewItem::set_height (height - NAME_HIGHLIGHT_SIZE - 3 );
121 CrossfadeView::crossfade_changed (Change what_changed)
123 bool need_redraw_curves = false;
125 if (what_changed & BoundsChanged) {
126 set_position (crossfade.position(), this);
127 set_duration (crossfade.overlap_length(), this);
128 need_redraw_curves = true;
131 if (what_changed & Crossfade::FollowOverlapChanged) {
132 need_redraw_curves = true;
135 if (what_changed & Crossfade::ActiveChanged) {
136 /* calls redraw_curves */
138 } else if (need_redraw_curves) {
144 CrossfadeView::redraw_curves ()
151 if (!crossfade.following_overlap()) {
152 /* curves should not be visible */
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 double tav_height = get_time_axis_view().height;
163 if (tav_height == TimeAxisView::hSmaller ||
164 tav_height == TimeAxisView::hSmall) {
165 h = tav_height - 3.0;
167 h = tav_height - NAME_HIGHLIGHT_SIZE - 3.0;
171 /* no space allocated yet */
175 npoints = get_time_axis_view().editor.frame_to_pixel (crossfade.length());
176 npoints = std::min (gdk_screen_width(), npoints);
178 if (!_visible || !crossfade.active() || npoints < 3) {
187 points = get_canvas_points ("xfade edit redraw", npoints);
188 vec = new float[npoints];
190 crossfade.fade_in().get_vector (0, crossfade.length(), vec, npoints);
191 for (int i = 0, pci = 0; i < npoints; ++i) {
192 Art::Point &p = (*points)[pci++];
194 p.set_y(2.0 + h - (h * vec[i]));
196 fade_in->property_points() = *points;
198 crossfade.fade_out().get_vector (0, crossfade.length(), vec, npoints);
199 for (int i = 0, pci = 0; i < npoints; ++i) {
200 Art::Point &p = (*points)[pci++];
202 p.set_y(2.0 + h - (h * vec[i]));
204 fade_out->property_points() = *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 group->raise_to_top();
218 CrossfadeView::active_changed ()
220 if (crossfade.active()) {
221 frame->property_fill_color_rgba() = color_map[cActiveCrossfade];
223 frame->property_fill_color_rgba() = color_map[cInactiveCrossfade];
230 CrossfadeView::set_valid (bool yn)
236 CrossfadeView::upper_regionview () const
238 if (left_view.region()->layer() > right_view.region()->layer()) {
246 CrossfadeView::show ()
253 CrossfadeView::hide ()
260 CrossfadeView::fake_hide ()