prevent trim cursors appearing, and prevent note trimming, when in a MIDI note that is too small on-screen. avoids silliness with trim cursors appearing while drawing small notes on screen, though really, it would nice to avoid them appearing ever in a note that was just added. not sure how to do that.

git-svn-id: svn://localhost/ardour2/branches/3.0@9077 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/canvas-hit.h

@@ -41,10 +41,10 @@ public:
 	void show() { Diamond::show(); }
 	void hide() { Diamond::hide(); }
 
-	double x1() { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return x1; }
-	double y1() { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return y1; }
-	double x2() { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return x2; }
-	double y2() { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return y2; }
+	double x1() const { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return x1; }
+	double y1() const { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return y1; }
+	double x2() const { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return x2; }
+	double y2() const { double x1, y1, x2, y2; get_bounds(x1,y1,x2,y2); return y2; }
 
 	void set_outline_color(uint32_t c) { property_outline_color_rgba() = c; }
 	void set_fill_color(uint32_t c) { property_fill_color_rgba() = c; }

gtk2_ardour/canvas-note-event.cc

@@ -292,7 +292,14 @@ CanvasNoteEvent::set_mouse_fractions (GdkEvent* ev)
 	_mouse_y_fraction = yf;
 
 	if (notify) {
-		_region.note_mouse_position (_mouse_x_fraction, _mouse_y_fraction, set_cursor);
+                if (big_enough_to_trim()) {
+                        _region.note_mouse_position (_mouse_x_fraction, _mouse_y_fraction, set_cursor);
+                } else {
+                        /* pretend the mouse is in the middle, because this is not big enough
+                           to trim right now.
+                        */
+                        _region.note_mouse_position (0.5, 0.5, set_cursor);
+                }
 	}
 }
 
@@ -347,6 +354,12 @@ CanvasNoteEvent::mouse_near_ends () const
 		(_mouse_x_fraction >= 0.75 && _mouse_x_fraction < 1.0);
 }
 
+bool
+CanvasNoteEvent::big_enough_to_trim () const
+{
+        return (x2() - x1()) > 10; /* canvas units, really pixels */
+}
+
 } // namespace Canvas
 } // namespace Gnome
 

gtk2_ardour/canvas-note-event.h

@@ -95,10 +95,10 @@ class CanvasNoteEvent : virtual public sigc::trackable
 	virtual void set_outline_color(uint32_t c) = 0;
 	virtual void set_fill_color(uint32_t c) = 0;
 
-	virtual double x1() = 0;
-	virtual double y1() = 0;
-	virtual double x2() = 0;
-	virtual double y2() = 0;
+	virtual double x1() const = 0;
+	virtual double y1() const = 0;
+	virtual double x2() const = 0;
+	virtual double y2() const = 0;
 
         float mouse_x_fraction() const { return _mouse_x_fraction; }
         float mouse_y_fraction() const { return _mouse_y_fraction; }
@@ -143,7 +143,8 @@ class CanvasNoteEvent : virtual public sigc::trackable
 	static const uint32_t midi_channel_colors[16];
 
         bool mouse_near_ends () const;
-  
+        bool big_enough_to_trim () const;
+
   protected:
 	enum State { None, Pressed, Dragging };
 

gtk2_ardour/canvas-note.h

@@ -39,10 +39,10 @@ class CanvasNote : public SimpleRect, public CanvasNoteEvent
 		    const boost::shared_ptr<NoteType> note = boost::shared_ptr<NoteType>(),
                     bool with_events = true);
 
-	double x1() { return property_x1(); }
-	double y1() { return property_y1(); }
-	double x2() { return property_x2(); }
-	double y2() { return property_y2(); }
+	double x1() const { return property_x1(); }
+	double y1() const { return property_y1(); }
+	double x2() const { return property_x2(); }
+	double y2() const { return property_y2(); }
 
 	void set_outline_color(uint32_t c) { property_outline_color_rgba() = c; hide(); show(); }
 	void set_fill_color(uint32_t c)    { property_fill_color_rgba()    = c; hide(); show(); }

gtk2_ardour/editor_mouse.cc

@@ -713,8 +713,7 @@ Editor::button_press_handler_1 (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 			if (internal_editing()) {
 				/* trim notes if we're in internal edit mode and near the ends of the note */
 				ArdourCanvas::CanvasNote* cn = dynamic_cast<ArdourCanvas::CanvasNote*> (item);
-				cerr << "NoteItem button press, cursor = " << current_canvas_cursor << endl;
-				if (cn->mouse_near_ends()) {
+				if (cn->big_enough_to_trim() && cn->mouse_near_ends()) {
 					_drags->set (new NoteResizeDrag (this, item), event, current_canvas_cursor);
 				} else {
 					_drags->set (new NoteDrag (this, item), event);

gtk2_ardour/midi_region_view.cc

@@ -2849,7 +2849,7 @@ void
 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
 {
 	Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
-
+        
         if (x_fraction > 0.0 && x_fraction < 0.25) {
                 editor->set_canvas_cursor (editor->cursors()->left_side_trim);
         } else if (x_fraction >= 0.75 && x_fraction < 1.0) {