/*
- Copyright (C) 2002-2007 Paul Davis
+ Copyright (C) 2002-2007 Paul Davis
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
using namespace std;
-#define MAX_CACHED_LINES 512
-
-TempoLines::TempoLines(ArdourCanvas::Canvas& canvas, ArdourCanvas::Group* group)
+#define MAX_CACHED_LINES 128
+
+TempoLines::TempoLines(ArdourCanvas::Canvas& canvas, ArdourCanvas::Group* group, double screen_height)
: _canvas(canvas)
, _group(group)
, _clean_left(DBL_MAX)
, _clean_right(0.0)
+ , _height(screen_height)
{
}
_clean_left = DBL_MAX;
_clean_right = 0.0;
+ size_t d = 1;
// TODO: Dirty/slow, but 'needed' for zoom :(
- for (Lines::iterator i = _lines.begin(); i != _lines.end(); ) {
+ for (Lines::iterator i = _lines.begin(); i != _lines.end(); ++d) {
Lines::iterator next = i;
++next;
- i->second->property_x1() = DBL_MAX;
- i->second->property_x2() = DBL_MAX;
+ i->second->property_x1() = - d;
+ i->second->property_x2() = - d;
_lines.erase(i);
- _lines.insert(make_pair(DBL_MAX, i->second));
+ _lines.insert(make_pair(- d, i->second));
i = next;
}
}
TempoLines::show ()
{
for (Lines::iterator i = _lines.begin(); i != _lines.end(); ++i) {
- i->second->show();
+ i->second->show();
}
}
TempoLines::hide ()
{
for (Lines::iterator i = _lines.begin(); i != _lines.end(); ++i) {
- i->second->hide();
+ i->second->hide();
}
}
TempoLines::draw (ARDOUR::TempoMap::BBTPointList& points, double frames_per_unit)
{
ARDOUR::TempoMap::BBTPointList::iterator i;
- ArdourCanvas::SimpleLine *line;
+ ArdourCanvas::SimpleLine *line = NULL;
gdouble xpos;
double who_cares;
- double x1, x2, y1, y2, beat_density;
+ double x1, x2, y1, beat_density;
uint32_t beats = 0;
uint32_t bars = 0;
uint32_t color;
-
+
const size_t needed = points.size();
_canvas.get_scroll_region (x1, y1, x2, who_cares);
- _canvas.root()->get_bounds(who_cares, who_cares, who_cares, y2);
/* get the first bar spacing */
if (beat_density > 4.0f) {
/* if the lines are too close together, they become useless */
+ tempo_map_changed();
return;
}
const double needed_right = xpos;
i = points.begin();
-
+
xpos = rint(((nframes64_t)(*i).frame) / (double)frames_per_unit);
const double needed_left = xpos;
bool exhausted = (left == _lines.end());
Lines::iterator li = left;
-
+ if (li != _lines.end())
+ line = li->second;
+
// Tempo map hasn't changed and we're entirely within a clean
// range, don't need to do anything. Yay.
if (needed_left >= _clean_left && needed_right <= _clean_right) {
- //cout << "LINE CACHE PERFECT HIT!" << endl;
+ //cout << endl << "*** LINE CACHE PERFECT HIT" << endl;
return;
}
- //cout << "LINE CACHE MISS :/" << endl;
+ //cout << endl << "*** LINE CACHE MISS" << endl;
- bool inserted_last_time = false;
+ bool inserted_last_time = true;
bool invalidated = false;
-
+
for (i = points.begin(); i != points.end(); ++i) {
switch ((*i).type) {
break;
case ARDOUR::TempoMap::Beat:
-
if ((*i).beat == 1) {
color = ARDOUR_UI::config()->canvasvar_MeasureLineBar.get();
} else {
color = ARDOUR_UI::config()->canvasvar_MeasureLineBeat.get();
-
if (beat_density > 2.0) {
- /* only draw beat lines if the gaps between beats are large. */
- break;
+ break; /* only draw beat lines if the gaps between beats are large. */
}
}
-
+
xpos = rint(((nframes64_t)(*i).frame) / (double)frames_per_unit);
- if (inserted_last_time) {
+ if (inserted_last_time && !_lines.empty()) {
li = _lines.lower_bound(xpos); // first line >= xpos
}
-
- if (!exhausted) {
- line = li->second;
- exhausted = ((++li) == _lines.end());
- inserted_last_time = false;
+
+ line = (li != _lines.end()) ? li->second : NULL;
+ assert(!line || line->property_x1() == li->first);
+
+ Lines::iterator next = li;
+ if (next != _lines.end())
+ ++next;
+
+ exhausted = (next == _lines.end());
+
+ // Hooray, line is perfect
+ if (line && line->property_x1() == xpos) {
+ if (li != _lines.end())
+ ++li;
+
+ line->property_color_rgba() = color;
+ inserted_last_time = false; // don't search next time
+
+ // Use existing line, moving if necessary
+ } else if (!exhausted) {
+ Lines::iterator steal = _lines.end();
+ --steal;
+
+ // Steal from the right
+ if (left->first > needed_left && li != steal && steal->first > needed_right) {
+ //cout << "*** STEALING FROM RIGHT" << endl;
+ line = steal->second;
+ _lines.erase(steal);
+ line->property_x1() = xpos;
+ line->property_x2() = xpos;
+ line->property_color_rgba() = color;
+ _lines.insert(make_pair(xpos, line));
+ inserted_last_time = true; // search next time
+ invalidated = true;
+
+ // Shift clean range left
+ _clean_left = min(_clean_left, xpos);
+ _clean_right = min(_clean_right, steal->first);
+
+ // Move this line to where we need it
+ } else {
+ Lines::iterator existing = _lines.find(xpos);
+ if (existing != _lines.end()) {
+ //cout << "*** EXISTING LINE" << endl;
+ li = existing;
+ li->second->property_color_rgba() = color;
+ inserted_last_time = false; // don't search next time
+ } else {
+ //cout << "*** MOVING LINE" << endl;
+ const double x1 = line->property_x1();
+ const bool was_clean = x1 >= _clean_left && x1 <= _clean_right;
+ invalidated = invalidated || was_clean;
+ // Invalidate clean portion (XXX: too harsh?)
+ _clean_left = needed_left;
+ _clean_right = needed_right;
+ _lines.erase(li);
+ line->property_color_rgba() = color;
+ line->property_x1() = xpos;
+ line->property_x2() = xpos;
+ _lines.insert(make_pair(xpos, line));
+ inserted_last_time = true; // search next time
+ }
+ }
+
+ // Create a new line
} else if (_lines.size() < needed || _lines.size() < MAX_CACHED_LINES) {
+ //cout << "*** CREATING LINE" << endl;
+ assert(_lines.find(xpos) == _lines.end());
line = new ArdourCanvas::SimpleLine (*_group);
line->property_x1() = xpos;
line->property_x2() = xpos;
- line->property_y2() = y2;
+ line->property_y1() = 0.0;
+ line->property_y2() = _height;
line->property_color_rgba() = color;
_lines.insert(make_pair(xpos, line));
inserted_last_time = true;
+
+ // Steal from the left
} else {
- assert(li != _lines.begin());
- line = _lines.begin()->second; // steal leftmost line
- _lines.erase(_lines.begin());
+ //cout << "*** STEALING FROM LEFT" << endl;
+ assert(_lines.find(xpos) == _lines.end());
+ Lines::iterator steal = _lines.begin();
+ line = steal->second;
+ _lines.erase(steal);
+ line->property_color_rgba() = color;
+ line->property_x1() = xpos;
+ line->property_x2() = xpos;
_lines.insert(make_pair(xpos, line));
- inserted_last_time = true;
+ inserted_last_time = true; // search next time
invalidated = true;
- }
- /* At this point, line's key is correct, but actual pos may not be */
- if (line->property_x1() != xpos) {
- // Turn this on to see the case where this isn't quite ideal yet
- // (scrolling left, lots of lines are moved left when there is
- // likely to be a huge chunk with equivalent coords)
- //cout << "MOVE " << line->property_x1() << " -> " << xpos << endl;
- double x1 = line->property_x1();
- bool was_clean = x1 >= _clean_left && x1 <= _clean_right;
- invalidated = invalidated || was_clean;
- line->property_x1() = xpos;
- line->property_x2() = xpos;
- line->property_y2() = y2;
- line->property_color_rgba() = color;
+ // Shift clean range right
+ _clean_left = max(_clean_left, steal->first);
+ _clean_right = max(_clean_right, xpos);
}
break;
}
}
-
- if (invalidated) { // We messed things up, visible range is all we know is valid
- _clean_left = needed_left;
- _clean_right = needed_right;
- } else { // Extend range to what we've 'fixed'
+
+ // Extend range to what we've 'fixed'
+ if (!invalidated) {
_clean_left = min(_clean_left, needed_left);
_clean_right = max(_clean_right, needed_right);
}
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