Canvas::Rect::contains() should treat its right/left coordinates as exclusive

[ardour.git] / libs / canvas / wave_view.cc

diff --git a/libs/canvas/wave_view.cc b/libs/canvas/wave_view.cc
index 553bcdf5d3f94f59d298c3b078cbfc55ba437584..bae9d3f8f510f33080b612da5fdb6c243f1cb728 100644 (file)
--- a/libs/canvas/wave_view.cc
+++ b/libs/canvas/wave_view.cc
@@ -71,6 +71,7 @@ WaveView::WaveView (Canvas* c, boost::shared_ptr<ARDOUR::AudioRegion> region)
        , _gradient_depth_independent (false)
        , _amplitude_above_axis (1.0)
        , _region_amplitude (_region->scale_amplitude ())
+       , _start_shift (0.0)
        , _region_start (region->start())
 {
        VisualPropertiesChanged.connect_same_thread (invalidation_connection, boost::bind (&WaveView::handle_visual_property_change, this));
@@ -804,7 +805,7 @@ WaveView::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) cons
         * draw "between" pixels at the start and/or end.
         */
 
-       const double draw_start = floor (draw.x0);
+       const double draw_start = floor (draw.x0) + _start_shift;
        const double draw_end = floor (draw.x1);
 
        // cerr << "Need to draw " << draw_start << " .. " << draw_end << endl;
@@ -1031,6 +1032,19 @@ WaveView::set_global_show_waveform_clipping (bool yn)
 {
        if (_global_show_waveform_clipping != yn) {
                _global_show_waveform_clipping = yn;
-               VisualPropertiesChanged (); /* EMIT SIGNAL */
+               ClipLevelChanged ();
        }
 }
+
+void
+WaveView::set_start_shift (double pixels)
+{
+       if (pixels < 0) {
+               return;
+       }
+
+       begin_visual_change ();
+       _start_shift = pixels;
+       end_visual_change ();
+}
+