Use boost::shared_ptr instead of raw pointers for RouteUI track (etc) accessors ...
[ardour.git] / gtk2_ardour / time_axis_view_item.cc
index abab306a84d548044c3ea11b58c746895e42aa93..0e66ab2bae2b1372344f565c1572471e7a97df30 100644 (file)
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id$
 */
 
 #include <pbd/error.h>
+#include <pbd/stacktrace.h>
 
 #include <ardour/types.h>
 #include <ardour/ardour.h>
@@ -68,7 +68,7 @@ double TimeAxisViewItem::NAME_HIGHLIGHT_THRESH;
  * @param duration the duration of this item
  */
 TimeAxisViewItem::TimeAxisViewItem(const string & it_name, ArdourCanvas::Group& parent, TimeAxisView& tv, double spu, Gdk::Color& base_color, 
-                                  jack_nframes_t start, jack_nframes_t duration,
+                                  nframes_t start, nframes_t duration,
                                   Visibility vis)
        : trackview (tv)
 {
@@ -89,32 +89,62 @@ TimeAxisViewItem::TimeAxisViewItem(const string & it_name, ArdourCanvas::Group&
                layout->set_font_description (NAME_FONT);
                Gtkmm2ext::get_ink_pixel_size (layout, width, height);
 
-               NAME_Y_OFFSET = height + 4;
+               NAME_Y_OFFSET = height + 6;
                NAME_HIGHLIGHT_SIZE = height + 6;
                NAME_HIGHLIGHT_THRESH = NAME_HIGHLIGHT_SIZE * 2;
 
                have_name_font = true;
        }
 
+       group = new ArdourCanvas::Group (parent);
+       
+       init (it_name, spu, base_color, start, duration, vis);
+
+}
+
+TimeAxisViewItem::TimeAxisViewItem (const TimeAxisViewItem& other)
+       : trackview (other.trackview)
+{
+
+       Gdk::Color c;
+       int r,g,b,a;
+
+       UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
+       c.set_rgb_p (r/255.0, g/255.0, b/255.0);
+
+       /* share the other's parent, but still create a new group */
+
+       Gnome::Canvas::Group* parent = other.group->property_parent();
+       
+       group = new ArdourCanvas::Group (*parent);
+
+       init (other.item_name, other.samples_per_unit, c, other.frame_position, other.item_duration, other.visibility);
+}
+
+
+void
+TimeAxisViewItem::init (const string& it_name, double spu, Gdk::Color& base_color, nframes_t start, nframes_t duration, Visibility vis)
+{
        item_name = it_name ;
+       name_text_width = ::pixel_width (it_name, NAME_FONT);
+       last_name_text_width = 0;
        samples_per_unit = spu ;
        should_show_selection = true;
        frame_position = start ;
        item_duration = duration ;
        name_connected = false;
-       fill_opacity = 50;
+       fill_opacity = 60;
        position_locked = false ;
        max_item_duration = ARDOUR::max_frames;
        min_item_duration = 0 ;
        show_vestigial = true;
        visibility = vis;
+       _sensitive = true;
 
        if (duration == 0) {
                warning << "Time Axis Item Duration == 0" << endl ;
        }
 
-       group = new ArdourCanvas::Group (parent);
-
        vestigial_frame = new ArdourCanvas::SimpleRect (*group);
        vestigial_frame->property_x1() = (double) 0.0;
        vestigial_frame->property_y1() = (double) 1.0;
@@ -137,8 +167,12 @@ TimeAxisViewItem::TimeAxisViewItem(const string & it_name, ArdourCanvas::Group&
 
                uint32_t outline_what = 0x1|0x2|0x4|0x8;
 
-               if (visibility & HideFrameLR) {
-                       outline_what &= ~(0x1 | 0x2);
+               if (visibility & HideFrameLeft) {
+                       outline_what &= ~(0x1);
+               }
+
+               if (visibility & HideFrameRight) {
+                       outline_what &= ~(0x2);
                }
 
                if (visibility & HideFrameTB) {
@@ -217,7 +251,6 @@ TimeAxisViewItem::TimeAxisViewItem(const string & it_name, ArdourCanvas::Group&
        set_position (start, this) ;
 }
 
-
 /**
  * Destructor
  */
@@ -238,7 +271,7 @@ TimeAxisViewItem::~TimeAxisViewItem()
  * @return true if the position change was a success, false otherwise
  */
 bool
-TimeAxisViewItem::set_position(jack_nframes_t pos, void* src, double* delta)
+TimeAxisViewItem::set_position(nframes_t pos, void* src, double* delta)
 {
        if (position_locked) {
                return false;
@@ -278,7 +311,7 @@ TimeAxisViewItem::set_position(jack_nframes_t pos, void* src, double* delta)
  *
  * @return the position of this item
  */
-jack_nframes_t
+nframes_t
 TimeAxisViewItem::get_position() const
 {
        return frame_position;
@@ -292,7 +325,7 @@ TimeAxisViewItem::get_position() const
  * @return true if the duration change was succesful, false otherwise
  */
 bool
-TimeAxisViewItem::set_duration (jack_nframes_t dur, void* src)
+TimeAxisViewItem::set_duration (nframes_t dur, void* src)
 {
        if ((dur > max_item_duration) || (dur < min_item_duration)) {
                warning << string_compose (_("new duration %1 frames is out of bounds for %2"), get_item_name(), dur)
@@ -306,9 +339,7 @@ TimeAxisViewItem::set_duration (jack_nframes_t dur, void* src)
 
        item_duration = dur;
        
-       double pixel_width = trackview.editor.frame_to_pixel (dur);
-
-       reset_width_dependent_items (pixel_width);
+       reset_width_dependent_items (trackview.editor.frame_to_pixel (dur));
        
        DurationChanged (dur, src) ; /* EMIT_SIGNAL */
        return true;
@@ -318,7 +349,7 @@ TimeAxisViewItem::set_duration (jack_nframes_t dur, void* src)
  * Returns the duration of this item
  *
  */
-jack_nframes_t
+nframes_t
 TimeAxisViewItem::get_duration() const
 {
        return (item_duration);
@@ -331,7 +362,7 @@ TimeAxisViewItem::get_duration() const
  * @param src the identity of the object that initiated the change
  */
 void
-TimeAxisViewItem::set_max_duration(jack_nframes_t dur, void* src)
+TimeAxisViewItem::set_max_duration(nframes_t dur, void* src)
 {
        max_item_duration = dur ;
        MaxDurationChanged(max_item_duration, src) ; /* EMIT_SIGNAL */
@@ -342,7 +373,7 @@ TimeAxisViewItem::set_max_duration(jack_nframes_t dur, void* src)
  *
  * @return the maximum duration that this item may be set to
  */
-jack_nframes_t
+nframes_t
 TimeAxisViewItem::get_max_duration() const
 {
        return (max_item_duration) ;
@@ -355,7 +386,7 @@ TimeAxisViewItem::get_max_duration() const
  * @param src the identity of the object that initiated the change
  */
 void
-TimeAxisViewItem::set_min_duration(jack_nframes_t dur, void* src)
+TimeAxisViewItem::set_min_duration(nframes_t dur, void* src)
 {
        min_item_duration = dur ;
        MinDurationChanged(max_item_duration, src) ; /* EMIT_SIGNAL */
@@ -366,7 +397,7 @@ TimeAxisViewItem::set_min_duration(jack_nframes_t dur, void* src)
  *
  * @return the nimum duration that this item mey be set to
  */
-jack_nframes_t
+nframes_t
 TimeAxisViewItem::get_min_duration() const
 {
        return(min_item_duration) ;
@@ -460,6 +491,7 @@ TimeAxisViewItem::set_item_name(std::string new_name, void* src)
        if (new_name != item_name) {
                std::string temp_name = item_name ;
                item_name = new_name ;
+               name_text_width = ::pixel_width (new_name, NAME_FONT);
                NameChanged (item_name, temp_name, src) ; /* EMIT_SIGNAL */
        }
 }
@@ -525,23 +557,26 @@ TimeAxisViewItem::get_time_axis_view()
  * @param new_name the new name text to display
  */
 void
-TimeAxisViewItem::set_name_text(std::string new_name)
+TimeAxisViewItem::set_name_text(const ustring& new_name)
 {
        if (name_text) {
-               name_text->property_text() = new_name.c_str();
+               name_text->property_text() = new_name;
+               name_text_width = pixel_width (new_name, NAME_FONT);
+               name_text_size_cache.clear ();
        }
 }
 
 /**
- * Set the height of this item
+ * Set the y position and height of this item.
  *
+ * @param y the new y position
  * @param h the new height
  */            
 void
-TimeAxisViewItem::set_height(double height)
+TimeAxisViewItem::set_y_position_and_height (double y, double h)
 {
        if (name_highlight) {
-               if (height < NAME_HIGHLIGHT_THRESH) {
+               if (h < NAME_HIGHLIGHT_THRESH) {
                        name_highlight->hide();
                        if (name_text) {
                                name_text->hide();
@@ -553,20 +588,20 @@ TimeAxisViewItem::set_height(double height)
                        }
                }
 
-               if (height > NAME_HIGHLIGHT_SIZE) {
-                       name_highlight->property_y1() = (double) height+1 - NAME_HIGHLIGHT_SIZE;
-                       name_highlight->property_y2() = (double) height;
+               if (h > NAME_HIGHLIGHT_SIZE) {
+                       name_highlight->property_y1() = (double) y + h + 1 - NAME_HIGHLIGHT_SIZE;
+                       name_highlight->property_y2() = (double) y + h;
                }
                else {
                        /* it gets hidden now anyway */
-                       name_highlight->property_y1() = (double) 1.0;
-                       name_highlight->property_y2() = (double) height;
+                       name_highlight->property_y1() = (double) y;
+                       name_highlight->property_y2() = (double) y + h;
                }
        }
 
        if (name_text) {
-               name_text->property_y() = height+1 - NAME_Y_OFFSET;
-               if (height < NAME_HIGHLIGHT_THRESH) {
+               name_text->property_y() = y + h + 1 - NAME_Y_OFFSET;
+               if (h < NAME_HIGHLIGHT_THRESH) {
                        name_text->property_fill_color_rgba() =  fill_color;
                }
                else {
@@ -575,10 +610,12 @@ TimeAxisViewItem::set_height(double height)
        }
 
        if (frame) {
-               frame->property_y2() = height+1;
+               frame->property_y1() = y;
+               frame->property_y2() = y + h + 1;
        }
 
-       vestigial_frame->property_y2() = height+1;
+       vestigial_frame->property_y1() = y;
+       vestigial_frame->property_y2() = y + h + 1;
 }
 
 /**
@@ -847,7 +884,7 @@ TimeAxisViewItem::reset_width_dependent_items (double pixel_width)
                                }
                        } else {
                                name_highlight->show();
-                               if (name_text) {
+                               if (name_text && !get_item_name().empty()) {
                                        name_text->show();
                                        reset_name_width (pixel_width);
                                }
@@ -885,34 +922,87 @@ TimeAxisViewItem::reset_name_width (double pixel_width)
        if (name_text == 0) {
                return;
        }
-                       
-       int width;
-       
-       ustring ustr = fit_to_pixels (item_name, (int) floor (pixel_width - NAME_X_OFFSET), NAME_FONT, width);
 
-       if (ustr.empty()) {
-               
-               name_text->hide ();
-               
-       } else {
-               
-               /* don't use name for event handling if it leaves no room
-                  for trimming to work.
-               */
+       int limit = (int) floor (pixel_width - NAME_X_OFFSET);
+       bool shrinking = (last_name_text_width > pixel_width);
+       int actual_width;
+       ustring ustr;
+       ustring::size_type n;
+
+       if ((last_name_text_width &&                                       // we did this once
+            shrinking &&                                                  // we're getting smaller
+            (name_text_width <= limit) &&                                 // fits the new size
+            (name_text_width <= last_name_text_width - NAME_X_OFFSET))) { // fit into the old size too
+               last_name_text_width = pixel_width;
+               return;
+       }
+
+       /* now check the cache of existing truncations */
+
+       Gtk::Label foo;
+       Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout ("");
+
+       for (n = item_name.length(); n > 0; --n) {
                
-               if (pixel_width - width < (NAME_X_OFFSET * 2.0)) {
-                       if (name_connected) {
-                               name_connected = false;
+               map<ustring::size_type,int>::iterator i;
+
+               if ((i = name_text_size_cache.find (n)) != name_text_size_cache.end()) {
+
+                       /* we know the length of this substring already */
+                       
+                       if ((actual_width = (*i).second) < limit) {
+
+                               /* it fits, use it */
+                               
+                               ustr = item_name.substr (0, n);
+                               break;
                        }
+                                               
                } else {
-                       if (!name_connected) {
-                               name_connected = true;
+                       
+                       /* we don't know the length of this substring already, so compute
+                          it and put it into the cache.
+                        */
+
+                       layout->set_text (item_name.substr (0, n));
+                       
+                       int width, height;
+                       Gtkmm2ext::get_ink_pixel_size (layout, width, height);
+                       
+                       name_text_size_cache[n] = width;
+
+                       if ((actual_width = width) < limit) {
+                               ustr = item_name.substr (0, n);
+                               break;
                        }
                }
-               
-               name_text->property_text() = ustr;
-               name_text->show();
        }
+
+       if (n == 0) {
+               name_text->property_text() = "";
+               last_name_text_width = pixel_width;
+               return;
+       } 
+
+       /* don't use name for event handling if it leaves no room
+          for trimming to work.
+       */
+       
+       if (pixel_width - actual_width < (NAME_X_OFFSET * 2.0)) {
+               if (name_connected) {
+                       name_connected = false;
+               }
+       } else {
+               if (!name_connected) {
+                       name_connected = true;
+               }
+       }
+       
+       name_text->property_text() = ustr;
+       name_text_width = actual_width;
+       name_text->show();
+       last_name_text_width = pixel_width;
+
 }