Add some comments.
git-svn-id: svn://localhost/ardour2/branches/3.0@5169 d708f5d6-7413-0410-9779-e7cbd77b26cf
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Carl Hetherington
parent
86ce59e76c
commit
c6c10f1e7f
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@ -10,6 +10,9 @@ using namespace std;
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using namespace sigc;
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using namespace ARDOUR;
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/** Construct an EditorSummary.
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* @param e Editor to represent.
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*/
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EditorSummary::EditorSummary (Editor* e)
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: _editor (e),
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_session (0),
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@ -22,6 +25,9 @@ EditorSummary::EditorSummary (Editor* e)
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}
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/** Set the session.
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* @param s Session.
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*/
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void
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EditorSummary::set_session (Session* s)
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{
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@ -36,6 +42,7 @@ EditorSummary::set_session (Session* s)
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set_dirty ();
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}
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/** Destroy */
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EditorSummary::~EditorSummary ()
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{
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if (_pixmap) {
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@ -43,9 +50,14 @@ EditorSummary::~EditorSummary ()
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}
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}
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/** Handle an expose event.
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* @param event Event from GTK.
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*/
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bool
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EditorSummary::on_expose_event (GdkEventExpose* event)
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{
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/* Render the regions pixmap */
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Gdk::Rectangle const exposure (
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event->area.x, event->area.y, event->area.width, event->area.height
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);
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@ -72,6 +84,8 @@ EditorSummary::on_expose_event (GdkEventExpose* event)
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);
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}
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/* Render the view beginning and end markers */
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cairo_t* cr = gdk_cairo_create (get_window()->gobj());
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cairo_set_source_rgb (cr, 0, 1, 0);
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@ -92,6 +106,9 @@ EditorSummary::on_expose_event (GdkEventExpose* event)
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return true;
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}
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/** @param drawable GDK drawable.
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* @return pixmap for the regions.
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*/
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GdkPixmap *
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EditorSummary::get_pixmap (GdkDrawable* drawable)
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{
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@ -112,6 +129,9 @@ EditorSummary::get_pixmap (GdkDrawable* drawable)
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return _pixmap;
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}
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/** Render the required regions to a cairo context.
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* @param cr Context.
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*/
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void
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EditorSummary::render (cairo_t* cr)
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{
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@ -119,12 +139,15 @@ EditorSummary::render (cairo_t* cr)
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return;
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}
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/* background */
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_rectangle (cr, 0, 0, _width, _height);
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cairo_fill (cr);
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int N = 0;
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/* count tracks to render */
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for (PublicEditor::TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
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if ((*i)->view()) {
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++N;
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@ -137,6 +160,8 @@ EditorSummary::render (cairo_t* cr)
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cairo_set_line_width (cr, track_height);
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/* render regions */
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int n = 0;
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for (PublicEditor::TrackViewList::const_iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
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StreamView* s = (*i)->view ();
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@ -157,6 +182,12 @@ EditorSummary::render (cairo_t* cr)
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}
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/** Render a region for the summary.
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* @param r Region view.
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* @param cr Cairo context.
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* @param start Frame offset that the summary starts at.
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* @param y y coordinate to render at.
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*/
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void
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EditorSummary::render_region (RegionView* r, cairo_t* cr, nframes_t start, double y) const
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{
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@ -165,6 +196,7 @@ EditorSummary::render_region (RegionView* r, cairo_t* cr, nframes_t start, doubl
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cairo_stroke (cr);
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}
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/** Set the summary so that the whole thing will be re-rendered next time it is required */
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void
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EditorSummary::set_dirty ()
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{
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@ -174,6 +206,7 @@ EditorSummary::set_dirty ()
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queue_draw ();
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}
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/** Set the summary so that just the view boundary markers will be re-rendered */
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void
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EditorSummary::set_bounds_dirty ()
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{
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@ -181,13 +214,20 @@ EditorSummary::set_bounds_dirty ()
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queue_draw ();
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}
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/** Handle a size request.
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* @param req GTK requisition
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*/
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void
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EditorSummary::on_size_request (Gtk::Requisition *req)
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{
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/* Use a dummy, small width and the actual height that we want */
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req->width = 64;
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req->height = 64;
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}
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/** Handle a size allocation.
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* @param alloc GTK allocation.
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*/
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void
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EditorSummary::on_size_allocate (Gtk::Allocation& alloc)
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{
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@ -199,11 +239,16 @@ EditorSummary::on_size_allocate (Gtk::Allocation& alloc)
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set_dirty ();
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}
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/** Handle a button press.
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* @param ev GTK event.
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*/
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bool
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EditorSummary::on_button_press_event (GdkEventButton* ev)
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{
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if (ev->button == 1) {
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/* centre the editor view around the mouse click */
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nframes_t f = (ev->x / _pixels_per_frame) + _session->current_start_frame();
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nframes_t const h = _editor->current_page_frames () / 2;
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@ -9,6 +9,9 @@ namespace ARDOUR {
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class Editor;
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/** Class to provide a visual summary of the contents of an editor window; represents
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* the whole session as a set of lines, one per region view.
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*/
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class EditorSummary : public Gtk::EventBox
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{
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public:
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@ -29,13 +32,13 @@ private:
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GdkPixmap* get_pixmap (GdkDrawable *);
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void render_region (RegionView*, cairo_t*, nframes_t, double) const;
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Editor* _editor;
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ARDOUR::Session* _session;
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GdkPixmap* _pixmap;
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bool _regions_dirty;
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int _width;
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int _height;
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double _pixels_per_frame;
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Editor* _editor; ///< our editor
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ARDOUR::Session* _session; ///< our session
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GdkPixmap* _pixmap; ///< pixmap containing a rendering of the region views, or 0
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bool _regions_dirty; ///< true if _pixmap requires re-rendering, otherwise false
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int _width; ///< pixmap width
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int _height; ///< pixmap height
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double _pixels_per_frame; ///< pixels per frame for the x axis of the pixmap
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};
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#endif
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