From ff9ddf510065305e13d169d35f9b4e6b88ce76d7 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Thu, 12 Nov 2009 20:39:53 +0000
Subject: tidy up (a bit) locations editing widget ; use pixbuf/string code
 from 2.0;remove edit point clock

git-svn-id: svn://localhost/ardour2/branches/3.0@6074 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 gtk2_ardour/time_axis_view_item.cc | 81 ++++++++++++++++++++------------------
 1 file changed, 43 insertions(+), 38 deletions(-)

(limited to 'gtk2_ardour/time_axis_view_item.cc')

diff --git a/gtk2_ardour/time_axis_view_item.cc b/gtk2_ardour/time_axis_view_item.cc
index cb114f4f3d..1d8fc2aca7 100644
--- a/gtk2_ardour/time_axis_view_item.cc
+++ b/gtk2_ardour/time_axis_view_item.cc
@@ -56,6 +56,7 @@ bool TimeAxisViewItem::have_name_font = false;
 const double TimeAxisViewItem::NAME_X_OFFSET = 15.0;
 const double TimeAxisViewItem::GRAB_HANDLE_LENGTH = 6 ;
 
+int    TimeAxisViewItem::NAME_HEIGHT;
 double TimeAxisViewItem::NAME_Y_OFFSET;
 double TimeAxisViewItem::NAME_HIGHLIGHT_SIZE;
 double TimeAxisViewItem::NAME_HIGHLIGHT_THRESH;
@@ -96,6 +97,7 @@ TimeAxisViewItem::TimeAxisViewItem(const string & it_name, ArdourCanvas::Group&
 		layout->set_font_description (*NAME_FONT);
 		Gtkmm2ext::get_ink_pixel_size (layout, width, height);
 
+		NAME_HEIGHT = height;
 		NAME_Y_OFFSET = height + 3;
 		NAME_HIGHLIGHT_SIZE = height + 2;
 		NAME_HIGHLIGHT_THRESH = NAME_HIGHLIGHT_SIZE * 3;
@@ -145,6 +147,8 @@ TimeAxisViewItem::init (const string& it_name, double spu, Gdk::Color const & ba
 	show_vestigial = true;
 	visibility = vis;
 	_sensitive = true;
+	name_pixbuf_width = 0;
+	last_item_width = 0;
 
 	if (duration == 0) {
 		warning << "Time Axis Item Duration == 0" << endl ;
@@ -525,48 +529,16 @@ TimeAxisViewItem::get_time_axis_view()
 void
 TimeAxisViewItem::set_name_text(const ustring& new_name)
 {
-	uint32_t pb_width, it_width;
-	double font_size;
-
-	font_size = NAME_FONT->get_size() / Pango::SCALE;
-	it_width = trackview.editor().frame_to_pixel(item_duration);
-	pb_width = new_name.length() * font_size;
-
-	if (pb_width > it_width - NAME_X_OFFSET) {
-		pb_width = it_width - NAME_X_OFFSET;
-	}
-
-	if (pb_width <= 0 || it_width < NAME_X_OFFSET) {
-		if (name_pixbuf) {
-			name_pixbuf->hide();
-		}
+	if (!name_pixbuf) {
 		return;
-	} else {
-		name_pixbuf->show();
 	}
 
-	Glib::RefPtr<Gdk::Pixbuf> buf = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, pb_width, NAME_HIGHLIGHT_SIZE);
-
-	cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, pb_width, NAME_HIGHLIGHT_SIZE );
-	cairo_t *cr = cairo_create (surface);
-	cairo_text_extents_t te;
-	cairo_set_source_rgba (cr, 0.2, 0.2, 0.2, 1.0);
-	cairo_select_font_face (cr, NAME_FONT->get_family().c_str(),
-				CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
-	cairo_set_font_size (cr, 10);
-	cairo_text_extents (cr, new_name.c_str(), &te);
-
-	cairo_move_to (cr, 0.5,
-		       0.5 - te.height / 2 - te.y_bearing + NAME_HIGHLIGHT_SIZE / 2);
-	cairo_show_text (cr, new_name.c_str());
-
-	unsigned char* src = cairo_image_surface_get_data (surface);
-	convert_bgra_to_rgba(src, buf->get_pixels(), pb_width, NAME_HIGHLIGHT_SIZE);
-
-	cairo_destroy(cr);
-	name_pixbuf->property_pixbuf() = buf;
+	last_item_width = trackview.editor().frame_to_pixel(item_duration);
+	name_pixbuf_width = pixel_width (new_name, *NAME_FONT) + 2;
+	name_pixbuf->property_pixbuf() = pixbuf_from_ustring(new_name, NAME_FONT, name_pixbuf_width, NAME_HEIGHT);
 }
 
+
 /**
  * Set the height of this item
  *
@@ -897,7 +869,40 @@ TimeAxisViewItem::reset_width_dependent_items (double pixel_width)
 void
 TimeAxisViewItem::reset_name_width (double /*pixel_width*/)
 {
-	set_name_text (item_name);
+	uint32_t it_width;
+	int pb_width;
+	bool pixbuf_holds_full_name;
+
+	if (!name_pixbuf) {
+		return;
+	}
+
+	it_width = trackview.editor().frame_to_pixel(item_duration);
+	pb_width = name_pixbuf_width;
+
+	pixbuf_holds_full_name = last_item_width > pb_width + NAME_X_OFFSET;
+	last_item_width = it_width;
+
+	if (pixbuf_holds_full_name && (it_width >= pb_width + NAME_X_OFFSET)) {
+		/*
+		  we've previously had the full name length showing 
+		  and its still showing.
+		*/
+		return;
+	}
+	
+	if (pb_width > it_width - NAME_X_OFFSET) {
+		pb_width = it_width - NAME_X_OFFSET;
+	}
+	
+	if (pb_width <= 0 || it_width <= NAME_X_OFFSET) {
+		name_pixbuf->hide();
+		return;
+	} else {
+		name_pixbuf->show();
+	}
+
+	name_pixbuf->property_pixbuf() = pixbuf_from_ustring(item_name, NAME_FONT, pb_width, NAME_HEIGHT);
 }
 
 
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