/*
- Copyright (C) 2013 Paul Davis
- Copyright (C) 2014 Robin Gareus <robin@gareus.org>
+ Copyright (C) 2013 Paul Davis
+ Copyright (C) 2014 Robin Gareus <robin@gareus.org>
- 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 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.
+ 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.
+ 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.
*/
#include <exception>
#include <algorithm>
-#include "canvas/utils.h"
#include "canvas/xfade_curve.h"
#include "canvas/interpolated_curve.h"
+#include "canvas/utils.h"
using namespace ArdourCanvas;
using std::min;
using std::max;
-XFadeCurve::XFadeCurve (Group* parent)
+#ifdef USE_TRACKS_CODE_FEATURES
+static const bool show_bg_fades = false;
+#else
+static const bool show_bg_fades = true;
+#endif
+
+XFadeCurve::XFadeCurve (Canvas* c)
+ : Item (c)
+ , points_per_segment (32)
+ , _xfadeposition (Start)
+ , _outline_color (0x000000ff)
+ , _fill_color (0x22448880)
+ , show_background_fade (show_bg_fades)
+{
+}
+
+XFadeCurve::XFadeCurve (Canvas* c, XFadePosition pos)
+ : Item (c)
+ , points_per_segment (32)
+ , _xfadeposition (pos)
+ , _outline_color (0x000000ff)
+ , _fill_color (0x22448880)
+ , show_background_fade (show_bg_fades)
+{
+}
+
+XFadeCurve::XFadeCurve (Item* parent)
: Item (parent)
- , points_per_segment (24)
+ , points_per_segment (32)
, _xfadeposition (Start)
, _outline_color (0x000000ff)
, _fill_color (0x22448880)
+ , show_background_fade (show_bg_fades)
{
}
-XFadeCurve::XFadeCurve (Group* parent, XFadePosition pos)
+XFadeCurve::XFadeCurve (Item* parent, XFadePosition pos)
: Item (parent)
- , points_per_segment (24)
+ , points_per_segment (32)
, _xfadeposition (pos)
, _outline_color (0x000000ff)
, _fill_color (0x22448880)
+ , show_background_fade (show_bg_fades)
{
}
if (c.points.size () == 2) {
- window_space = item_to_window (c.points.front());
+ window_space = item_to_window (c.points.front(), false);
context->move_to (window_space.x, window_space.y);
- window_space = item_to_window (c.points.back());
+ window_space = item_to_window (c.points.back(), false);
context->line_to (window_space.x, window_space.y);
} else {
/* find left and right-most sample */
Points::size_type left = 0;
- Points::size_type right = c.n_samples;
+ Points::size_type right = c.n_samples - 1;
+ assert (left < right);
+ // we should really really do a binary search rather than iterate
for (Points::size_type idx = 0; idx < c.n_samples - 1; ++idx) {
left = idx;
- window_space = item_to_window (Duple (c.samples[idx].x, 0.0));
+ window_space = item_to_window (Duple (c.samples[idx].x, 0.0), false);
if (window_space.x >= area.x0) break;
}
- for (Points::size_type idx = c.n_samples; idx > left + 1; --idx) {
- window_space = item_to_window (Duple (c.samples[idx].x, 0.0));
+ for (Points::size_type idx = c.n_samples - 1; right > left;) {
+ if (--idx <= left) break;
+ window_space = item_to_window (Duple (c.samples[idx].x, 0.0), false);
if (window_space.x <= area.x1) break;
right = idx;
}
+ assert(left < right);
+ assert(left < c.n_samples);
+ assert(right < c.n_samples);
+
/* draw line between samples */
- window_space = item_to_window (Duple (c.samples[left].x, c.samples[left].y));
+ window_space = item_to_window (Duple (c.samples[left].x, c.samples[left].y), false);
context->move_to (window_space.x, window_space.y);
- Coord last_x = round(window_space.x);
- for (uint32_t idx = left + 1; idx < right; ++idx) {
- window_space = item_to_window (Duple (c.samples[idx].x, c.samples[idx].y));
- if (last_x == round(window_space.x)) continue;
- last_x = round(window_space.x);
- context->line_to (last_x - .5 , window_space.y);
+ for (uint32_t idx = left + 1; idx <= right; ++idx) {
+ window_space = item_to_window (Duple (c.samples[idx].x, c.samples[idx].y), false);
+ context->line_to (window_space.x, window_space.y);
}
}
return context->copy_path ();
{
Duple window_space;
if (inside) {
- window_space = item_to_window (Duple(c.points.back().x, area.height()));
+ window_space = item_to_window (Duple(c.points.back().x, area.height()), false);
context->line_to (window_space.x, window_space.y);
- window_space = item_to_window (Duple(c.points.front().x, area.height()));
+ window_space = item_to_window (Duple(c.points.front().x, area.height()), false);
context->line_to (window_space.x, window_space.y);
context->close_path();
} else {
- window_space = item_to_window (Duple(c.points.back().x, 0.0));
+ window_space = item_to_window (Duple(c.points.back().x, 0.0), false);
context->line_to (window_space.x, window_space.y);
- window_space = item_to_window (Duple(c.points.front().x, 0.0));
+ window_space = item_to_window (Duple(c.points.front().x, 0.0), false);
context->line_to (window_space.x, window_space.y);
context->close_path();
}
Color fill_shaded = _fill_color;
fill_shaded = 0.5 * (fill_shaded & 0xff) + (fill_shaded & ~0xff);
-#define IS (_xfadeposition == Start)
+#define IS_START (_xfadeposition == Start)
/* fill primary fade */
context->begin_new_path ();
- context->append_path (IS ? *path_in : *path_out);
- close_path(draw, context, IS ?_in : _out, false);
+ context->append_path (IS_START ? *path_in : *path_out);
+ close_path(draw, context, IS_START ?_in : _out, false);
set_source_rgba (context, _fill_color);
context->fill ();
- /* fill background fade */
- context->save ();
- context->begin_new_path ();
- context->append_path (IS ? *path_in : *path_out);
- close_path(draw, context, IS ? _in : _out, true);
- //context->set_fill_rule (Cairo::FILL_RULE_EVEN_ODD);
- context->clip ();
- context->begin_new_path ();
- context->append_path (IS ? *path_out: *path_in);
- close_path(draw, context, IS ? _out : _in, true);
- set_source_rgba (context, fill_shaded);
- //context->set_fill_rule (Cairo::FILL_RULE_WINDING);
- context->fill ();
- context->restore ();
+ if (show_background_fade) {
+ /* fill background fade */
+ context->save ();
+ context->begin_new_path ();
+ context->append_path (IS_START ? *path_in : *path_out);
+ close_path(draw, context, IS_START ? _in : _out, true);
+ context->set_fill_rule (Cairo::FILL_RULE_EVEN_ODD);
+ context->clip ();
+ context->begin_new_path ();
+ context->append_path (IS_START ? *path_out: *path_in);
+ close_path(draw, context, IS_START ? _out : _in, true);
+ set_source_rgba (context, fill_shaded);
+ context->set_fill_rule (Cairo::FILL_RULE_WINDING);
+ context->fill ();
+ context->restore ();
+ }
/* draw lines over fills */
- set_source_rgba (context, IS ? _outline_color : outline_shaded);
- context->set_line_width (IS ? 1.0 : .5);
-
- context->begin_new_path ();
- context->append_path (*path_in);
- context->stroke();
+ /* fade in line */
+ if (IS_START || show_background_fade) {
+ set_source_rgba (context, IS_START ? _outline_color : outline_shaded);
+ context->set_line_width (IS_START ? 1.0 : .5);
+
+ context->begin_new_path ();
+ context->append_path (*path_in);
+ context->stroke();
+ }
- set_source_rgba (context, IS ? outline_shaded :_outline_color);
- context->set_line_width (IS ? .5 : 1.0);
+ /* fade out line */
+ if (!IS_START || show_background_fade) {
+ set_source_rgba (context, IS_START ? outline_shaded :_outline_color);
+ context->set_line_width (IS_START ? .5 : 1.0);
- context->begin_new_path ();
- context->append_path (*path_out);
- context->stroke();
+ context->begin_new_path ();
+ context->append_path (*path_out);
+ context->stroke();
+ }
context->restore ();
projects / ardour.git / blobdiff