*/
-#include "canvas/line.h"
+#include "pbd/compose.h"
+
#include "canvas/canvas.h"
#include "canvas/debug.h"
+
#include "tempo_lines.h"
-#include "ardour_ui.h"
+#include "public_editor.h"
+#include "rgb_macros.h"
+#include "ui_config.h"
using namespace std;
-#define MAX_CACHED_LINES 128
-
-TempoLines::TempoLines (ArdourCanvas::GtkCanvasViewport& canvas_viewport, ArdourCanvas::Group* group, double screen_height)
- : _canvas_viewport (canvas_viewport)
- , _group(group)
- , _clean_left(DBL_MAX)
- , _clean_right(0.0)
- , _height(screen_height)
+TempoLines::TempoLines (ArdourCanvas::Container* group, double)
+ : lines (group, ArdourCanvas::LineSet::Vertical)
{
+ lines.set_extent (ArdourCanvas::COORD_MAX);
}
void
TempoLines::tempo_map_changed()
{
- _clean_left = DBL_MAX;
- _clean_right = 0.0;
-
- double_t d = 1.0;
- // TODO: Dirty/slow, but 'needed' for zoom :(
- for (Lines::iterator i = _lines.begin(); i != _lines.end(); d += 1.0) {
- Lines::iterator next = i;
- ++next;
- i->second->set_x0 (-d);
- i->second->set_x1 (-d);
- ArdourCanvas::Line* f = i->second;
- _lines.erase(i);
- _lines.insert(make_pair(- d, f));
- i = next;
- }
+ lines.clear ();
}
void
TempoLines::show ()
{
- for (Lines::iterator i = _lines.begin(); i != _lines.end(); ++i) {
- i->second->show();
- }
+ lines.show ();
}
void
TempoLines::hide ()
{
- for (Lines::iterator i = _lines.begin(); i != _lines.end(); ++i) {
- i->second->hide();
+ lines.hide ();
+}
+
+void
+TempoLines::draw_ticks (const ARDOUR::TempoMap::BBTPointList::const_iterator& b,
+ unsigned divisions,
+ framecnt_t leftmost_frame,
+ framecnt_t frame_rate)
+{
+ const double fpb = b->tempo->frames_per_beat(frame_rate);
+ const uint32_t base = UIConfiguration::instance().color_mod("measure line beat", "measure line beat");
+
+ for (unsigned l = 1; l < divisions; ++l) {
+ /* find the coarsest division level this tick falls on */
+ unsigned level = divisions;
+ for (unsigned d = divisions; d >= 4; d /= 2) {
+ if (l % (divisions / d) == 0) {
+ level = d;
+ }
+ }
+
+ /* draw line with alpha corresponding to coarsest level */
+ const uint8_t a = max(8, (int)rint(UINT_RGBA_A(base) / (0.8 * log2(level))));
+ const uint32_t c = UINT_RGBA_CHANGE_A(base, a);
+ const framepos_t f = b->frame + (l * (fpb / (double)divisions));
+ if (f > leftmost_frame) {
+ lines.add (PublicEditor::instance().sample_to_pixel_unrounded (f), 1.0, c);
+ }
}
}
void
-TempoLines::draw (const ARDOUR::TempoMap::BBTPointList::const_iterator& begin,
- const ARDOUR::TempoMap::BBTPointList::const_iterator& end,
- double frames_per_pixel)
+TempoLines::draw (const ARDOUR::TempoMap::BBTPointList::const_iterator& begin,
+ const ARDOUR::TempoMap::BBTPointList::const_iterator& end,
+ unsigned divisions,
+ framecnt_t leftmost_frame,
+ framecnt_t frame_rate)
{
ARDOUR::TempoMap::BBTPointList::const_iterator i;
- ArdourCanvas::Line *line = 0;
- gdouble xpos;
double beat_density;
uint32_t beats = 0;
uint32_t bars = 0;
uint32_t color;
- const size_t needed = distance (begin, end);
-
- ArdourCanvas::Rect const visible = _canvas_viewport.visible_area ();
-
/* get the first bar spacing */
i = end;
bars = (*i).bar - (*begin).bar;
beats = distance (begin, end) - bars;
- beat_density = (beats * 10.0f) / visible.width ();
+ beat_density = (beats * 10.0f) / lines.canvas()->width();
- if (beat_density > 4.0f) {
+ if (beat_density > 2.0f) {
/* if the lines are too close together, they become useless */
- tempo_map_changed();
+ lines.clear ();
return;
}
- xpos = rint(((framepos_t)(*i).frame) / (double)frames_per_pixel);
- const double needed_right = xpos;
-
- i = begin;
-
- xpos = rint(((framepos_t)(*i).frame) / (double)frames_per_pixel);
- const double needed_left = xpos;
-
- Lines::iterator left = _lines.lower_bound(xpos); // first line >= 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 << endl << "*** LINE CACHE PERFECT HIT" << endl;
- return;
+ /* constrain divisions to a log2 factor to cap line density */
+ while (divisions > 3 && beat_density * divisions > 0.4) {
+ divisions /= 2;
}
- //cout << endl << "*** LINE CACHE MISS" << endl;
+ lines.clear ();
- bool invalidated = false;
+ if (beat_density <= 0.12 && begin != end && begin->frame > 0) {
+ /* draw subdivisions of the beat before the first visible beat line */
+ ARDOUR::TempoMap::BBTPointList::const_iterator prev = begin;
+ --prev;
+ draw_ticks(prev, divisions, leftmost_frame, frame_rate);
+ }
for (i = begin; i != end; ++i) {
if ((*i).is_bar()) {
- color = ARDOUR_UI::config()->canvasvar_MeasureLineBar.get();
+ color = UIConfiguration::instance().color ("measure line bar");
} else {
- if (beat_density > 2.0) {
+ if (beat_density > 0.3) {
continue; /* only draw beat lines if the gaps between beats are large. */
}
- color = ARDOUR_UI::config()->canvasvar_MeasureLineBeat.get();
+ color = UIConfiguration::instance().color_mod ("measure line beat", "measure line beat");
}
- xpos = rint(((framepos_t)(*i).frame) / (double)frames_per_pixel);
-
- li = _lines.lower_bound(xpos); // first line >= xpos
-
- line = (li != _lines.end()) ? li->second : 0;
- assert(!line || line->x0() == li->first);
-
- Lines::iterator next = li;
- if (next != _lines.end())
- ++next;
-
- exhausted = (next == _lines.end());
-
- // Hooray, line is perfect
- if (line && line->x0() == xpos) {
- if (li != _lines.end())
- ++li;
-
- line->set_outline_color (color);
-
- // 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;
- double const x = steal->first;
- line = steal->second;
- _lines.erase(steal);
- line->set_x0 (xpos);
- line->set_x1 (xpos);
- line->set_outline_color (color);
- _lines.insert(make_pair(xpos, line));
- invalidated = true;
-
- // Shift clean range left
- _clean_left = min(_clean_left, xpos);
- _clean_right = min(_clean_right, x);
-
- // 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->set_outline_color (color);
- } else {
- //cout << "*** MOVING LINE" << endl;
- const double x1 = line->x0();
- 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->set_outline_color (color);
- line->set_x0 (xpos);
- line->set_x1 (xpos);
- _lines.insert(make_pair(xpos, line));
- }
- }
-
- // Create a new line
- } else if (_lines.size() < needed || _lines.size() < MAX_CACHED_LINES) {
- //cout << "*** CREATING LINE" << endl;
- /* if we already have a line there ... don't sweat it */
- if (_lines.find (xpos) == _lines.end()) {
- line = new ArdourCanvas::Line (_group);
- line->set_x0 (xpos);
- line->set_x1 (xpos);
- line->set_y0 (0.0);
- line->set_y1 (_height);
- line->set_outline_color (color);
- _lines.insert(make_pair(xpos, line));
- }
-
- // Steal from the left
- } else {
- //cout << "*** STEALING FROM LEFT" << endl;
- if (_lines.find (xpos) == _lines.end()) {
- Lines::iterator steal = _lines.begin();
- double const x = steal->first;
- line = steal->second;
- _lines.erase(steal);
- line->set_outline_color (color);
- line->set_x0 (xpos);
- line->set_x1 (xpos);
- _lines.insert(make_pair(xpos, line));
- invalidated = true;
-
- // Shift clean range right
- _clean_left = max(_clean_left, x);
- _clean_right = max(_clean_right, xpos);
- }
- }
- }
+ ArdourCanvas::Coord xpos = PublicEditor::instance().sample_to_pixel_unrounded ((*i).frame);
+
+ lines.add (xpos, 1.0, color);
- // Extend range to what we've 'fixed'
- if (!invalidated) {
- _clean_left = min(_clean_left, needed_left);
- _clean_right = max(_clean_right, needed_right);
+ if (beat_density <= 0.12) {
+ /* draw subdivisions of this beat */
+ draw_ticks(i, divisions, leftmost_frame, frame_rate);
+ }
}
}
projects / ardour.git / blobdiff