changes to help strp silence
[ardour.git] / gtk2_ardour / editor_summary.cc
index 6740ef92eb7385d21a8c138c496784dbacec8706..a6168fee2aaf13913f8f16d225e03a7cda5e5d17 100644 (file)
 #include "keyboard.h"
 
 using namespace std;
-using namespace sigc;
 using namespace ARDOUR;
+using Gtkmm2ext::Keyboard;
 
 /** Construct an EditorSummary.
  *  @param e Editor to represent.
  */
 EditorSummary::EditorSummary (Editor* e)
        : EditorComponent (e),
+         _start (0),
+         _end (1),
+         _overhang_fraction (0.1),
          _x_scale (1),
          _y_scale (1),
          _last_playhead (-1),
@@ -44,25 +47,25 @@ EditorSummary::EditorSummary (Editor* e)
          _zoom_dragging (false)
 
 {
-
+       Region::RegionPropertyChanged.connect (region_property_connection, boost::bind (&CairoWidget::set_dirty, this), gui_context());
+       _editor->playhead_cursor->PositionChanged.connect (position_connection, ui_bind (&EditorSummary::playhead_position_changed, this, _1), gui_context());
 }
 
 /** Connect to a session.
  *  @param s Session.
  */
 void
-EditorSummary::connect_to_session (Session* s)
+EditorSummary::set_session (Session* s)
 {
-       EditorComponent::connect_to_session (s);
-
-       Region::RegionPropertyChanged.connect (sigc::hide (mem_fun (*this, &EditorSummary::set_dirty)));
-
-       _session_connections.push_back (_session->RegionRemoved.connect (sigc::hide (mem_fun (*this, &EditorSummary::set_dirty))));
-       _session_connections.push_back (_session->EndTimeChanged.connect (mem_fun (*this, &EditorSummary::set_dirty)));
-       _session_connections.push_back (_session->StartTimeChanged.connect (mem_fun (*this, &EditorSummary::set_dirty)));
-       _editor->playhead_cursor->PositionChanged.connect (mem_fun (*this, &EditorSummary::playhead_position_changed));
+       EditorComponent::set_session (s);
 
        set_dirty ();
+
+       if (_session) {
+               _session->RegionRemoved.connect (_session_connections, boost::bind (&EditorSummary::set_dirty, this), gui_context());
+               _session->StartTimeChanged.connect (_session_connections, boost::bind (&EditorSummary::set_dirty, this), gui_context());
+               _session->EndTimeChanged.connect (_session_connections, boost::bind (&EditorSummary::set_dirty, this), gui_context());
+       }
 }
 
 /** Handle an expose event.
@@ -102,7 +105,7 @@ EditorSummary::on_expose_event (GdkEventExpose* event)
        /* XXX: colour should be set from configuration file */
        cairo_set_source_rgba (cr, 1, 0, 0, 1);
 
-       double const p = _editor->playhead_cursor->current_frame * _x_scale;
+       double const p = (_editor->playhead_cursor->current_frame - _start) * _x_scale;
        cairo_move_to (cr, p, 0);
        cairo_line_to (cr, p, _height);
        cairo_stroke (cr);
@@ -129,64 +132,91 @@ EditorSummary::render (cairo_t* cr)
                return;
        }
 
+       /* compute start and end points for the summary */
+       
+       nframes_t const session_length = _session->current_end_frame() - _session->current_start_frame ();
+       double const theoretical_start = _session->current_start_frame() - session_length * _overhang_fraction;
+       _start = theoretical_start > 0 ? theoretical_start : 0;
+       _end = _session->current_end_frame() + session_length * _overhang_fraction;
+
        /* compute total height of all tracks */
 
        int h = 0;
        int max_height = 0;
-       for (PublicEditor::TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
+       for (TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
                int const t = (*i)->effective_height ();
                h += t;
                max_height = max (max_height, t);
        }
 
-       nframes_t const start = _session->current_start_frame ();
-       _x_scale = static_cast<double> (_width) / (_session->current_end_frame() - start);
+       _x_scale = static_cast<double> (_width) / (_end - _start);
        _y_scale = static_cast<double> (_height) / h;
 
        /* tallest a region should ever be in the summary, in pixels */
-       int const tallest_region_pixels = 4;
+       int const tallest_region_pixels = _height / 16;
 
        if (max_height * _y_scale > tallest_region_pixels) {
                _y_scale = static_cast<double> (tallest_region_pixels) / max_height;
-
        }
 
        /* render regions */
 
        double y = 0;
-       for (PublicEditor::TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
+       for (TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
                StreamView* s = (*i)->view ();
 
                if (s) {
                        double const h = (*i)->effective_height () * _y_scale;
                        cairo_set_line_width (cr, h);
 
-                       s->foreach_regionview (bind (
-                                                      mem_fun (*this, &EditorSummary::render_region),
+                       s->foreach_regionview (sigc::bind (
+                                                      sigc::mem_fun (*this, &EditorSummary::render_region),
                                                       cr,
-                                                      start,
                                                       y + h / 2
                                                       ));
                        y += h;
                }
        }
 
+       /* start and end markers */
+
+       cairo_set_line_width (cr, 1);
+       cairo_set_source_rgb (cr, 1, 1, 0);
+
+       double const p = (_session->current_start_frame() - _start) * _x_scale;
+       cairo_move_to (cr, p, 0);
+       cairo_line_to (cr, p, _height);
+       cairo_stroke (cr);
+
+       double const q = (_session->current_end_frame() - _start) * _x_scale;
+       cairo_move_to (cr, q, 0);
+       cairo_line_to (cr, q, _height);
+       cairo_stroke (cr);
 }
 
 /** Render a region for the summary.
  *  @param r Region view.
  *  @param cr Cairo context.
- *  @param start Frame offset that the summary starts at.
  *  @param y y coordinate to render at.
  */
 void
-EditorSummary::render_region (RegionView* r, cairo_t* cr, nframes_t start, double y) const
+EditorSummary::render_region (RegionView* r, cairo_t* cr, double y) const
 {
        uint32_t const c = r->get_fill_color ();
        cairo_set_source_rgb (cr, UINT_RGBA_R (c) / 255.0, UINT_RGBA_G (c) / 255.0, UINT_RGBA_B (c) / 255.0);
 
-       cairo_move_to (cr, (r->region()->position() - start) * _x_scale, y);
-       cairo_line_to (cr, ((r->region()->position() - start + r->region()->length())) * _x_scale, y);
+       if (r->region()->position() > _start) {
+               cairo_move_to (cr, (r->region()->position() - _start) * _x_scale, y);
+       } else {
+               cairo_move_to (cr, 0, y);
+       }
+
+       if ((r->region()->position() + r->region()->length()) > _start) {
+               cairo_line_to (cr, ((r->region()->position() - _start + r->region()->length())) * _x_scale, y);
+       } else {
+               cairo_line_to (cr, 0, y);
+       }
+
        cairo_stroke (cr);
 }
 
@@ -194,7 +224,7 @@ EditorSummary::render_region (RegionView* r, cairo_t* cr, nframes_t start, doubl
 void
 EditorSummary::set_overlays_dirty ()
 {
-       ENSURE_GUI_THREAD (mem_fun (*this, &EditorSummary::set_overlays_dirty));
+       ENSURE_GUI_THREAD (*this, &EditorSummary::set_overlays_dirty)
        queue_draw ();
 }
 
@@ -261,6 +291,22 @@ EditorSummary::on_button_press_event (GdkEventButton* ev)
                _start_mouse_x = ev->x;
                _start_mouse_y = ev->y;
 
+               if (
+                       _start_editor_x.first <= _start_mouse_x && _start_mouse_x <= _start_editor_x.second &&
+                       _start_editor_y.first <= _start_mouse_y && _start_mouse_y <= _start_editor_y.second
+                       ) {
+
+                       _start_position = IN_VIEWBOX;
+
+               } else if (_start_editor_x.first <= _start_mouse_x && _start_mouse_x <= _start_editor_x.second) {
+
+                       _start_position = BELOW_OR_ABOVE_VIEWBOX;
+
+               } else {
+
+                       _start_position = TO_LEFT_OR_RIGHT_OF_VIEWBOX;
+               }
+
                if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 
                        /* primary-modifier-click: start a zoom drag */
@@ -287,7 +333,7 @@ EditorSummary::on_button_press_event (GdkEventButton* ev)
 
                        /* secondary-modifier-click: locate playhead */
                        if (_session) {
-                               _session->request_locate (ev->x / _x_scale + _session->current_start_frame());
+                               _session->request_locate (ev->x / _x_scale + _start);
                        }
 
                } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
@@ -310,11 +356,11 @@ EditorSummary::on_button_press_event (GdkEventButton* ev)
 void
 EditorSummary::get_editor (pair<double, double>* x, pair<double, double>* y) const
 {
-       x->first = (_editor->leftmost_position () - _session->current_start_frame ()) * _x_scale;
+       x->first = (_editor->leftmost_position () - _start) * _x_scale;
        x->second = x->first + _editor->current_page_frames() * _x_scale;
 
        y->first = _editor->vertical_adjustment.get_value() * _y_scale;
-       y->second = y->first + _editor->canvas_height () * _y_scale;
+       y->second = y->first + (_editor->canvas_height () - _editor->get_canvas_timebars_vsize()) * _y_scale;
 }
 
 bool
@@ -327,10 +373,27 @@ EditorSummary::on_motion_notify_event (GdkEventMotion* ev)
 
                _moved = true;
 
-               xr.first += ev->x - _start_mouse_x;
-               xr.second += ev->x - _start_mouse_x;
-               yr.first += ev->y - _start_mouse_y;
-               yr.second += ev->y - _start_mouse_y;
+               /* don't alter x if we clicked outside and above or below the viewbox */
+               if (_start_position == IN_VIEWBOX || _start_position == TO_LEFT_OR_RIGHT_OF_VIEWBOX) {
+                       xr.first += ev->x - _start_mouse_x;
+                       xr.second += ev->x - _start_mouse_x;
+               }
+
+               /* don't alter y if we clicked outside and to the left or right of the viewbox */
+               if (_start_position == IN_VIEWBOX || _start_position == BELOW_OR_ABOVE_VIEWBOX) {
+                       yr.first += ev->y - _start_mouse_y;
+                       yr.second += ev->y - _start_mouse_y;
+               }
+
+               if (xr.first < 0) {
+                       xr.second -= xr.first;
+                       xr.first = 0;
+               }
+
+               if (yr.first < 0) {
+                       yr.second -= yr.first;
+                       yr.first = 0;
+               }
 
                set_editor (xr, yr);
 
@@ -368,14 +431,22 @@ EditorSummary::on_scroll_event (GdkEventScroll* ev)
        pair<double, double> yr;
        get_editor (&xr, &yr);
 
-       double const amount = 8;
+       double amount = 8;
+
+       if (Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier)) {
+               amount = 64;
+       } else if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
+               amount = 1;
+       }
 
        if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 
+               /* primary-wheel == left-right scrolling */
+
                if (ev->direction == GDK_SCROLL_UP) {
                        xr.first += amount;
                        xr.second += amount;
-               } else {
+               } else if (ev->direction == GDK_SCROLL_DOWN) {
                        xr.first -= amount;
                        xr.second -= amount;
                }
@@ -385,11 +456,16 @@ EditorSummary::on_scroll_event (GdkEventScroll* ev)
                if (ev->direction == GDK_SCROLL_DOWN) {
                        yr.first += amount;
                        yr.second += amount;
-               } else {
+               } else if (ev->direction == GDK_SCROLL_UP) {
                        yr.first -= amount;
                        yr.second -= amount;
+               } else if (ev->direction == GDK_SCROLL_LEFT) {
+                       xr.first -= amount;
+                       xr.second -= amount;
+               } else if (ev->direction == GDK_SCROLL_RIGHT) {
+                       xr.first += amount;
+                       xr.second += amount;
                }
-
        }
 
        set_editor (xr, yr);
@@ -412,8 +488,26 @@ EditorSummary::set_editor (pair<double,double> const & x, pair<double, double> c
                   is merely pending but not executing.  But c'est la vie.
                */
 
-               _editor->reset_x_origin (x.first / _x_scale);
-               _editor->reset_y_origin (y.first / _y_scale);
+               /* proposed bottom of the editor with the requested position */
+               double const pb = y.second / _y_scale;
+
+               /* bottom of the canvas */
+               double const ch = _editor->full_canvas_height - _editor->canvas_timebars_vsize;
+
+               /* requested y position */
+               double ly = y.first / _y_scale;
+
+               /* clamp y position so as not to go off the bottom */
+               if (pb > ch) {
+                       ly -= (pb - ch);
+               }
+
+               if (ly < 0) {
+                       ly = 0;
+               }
+
+               _editor->reset_x_origin (x.first / _x_scale + _start);
+               _editor->reset_y_origin (ly);
 
                double const nx = (
                        ((x.second - x.first) / _x_scale) /
@@ -429,7 +523,7 @@ EditorSummary::set_editor (pair<double,double> const & x, pair<double, double> c
 void
 EditorSummary::playhead_position_changed (nframes64_t p)
 {
-       if (int (p * _x_scale) != int (_last_playhead)) {
+       if (_session && int (p * _x_scale) != int (_last_playhead)) {
                set_overlays_dirty ();
        }
 }