From 1267b1d61cbce8688f3d0f1c4c7932de49735e75 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Mon, 8 Apr 2013 19:48:09 -0400
Subject: mo' better debugging of canvas "structure" via Item::dump and
 derivatives

---
 libs/canvas/canvas.cc     |  6 +++---
 libs/canvas/canvas/text.h |  1 +
 libs/canvas/item.cc       |  8 +++++++-
 libs/canvas/poly_item.cc  |  4 ++--
 libs/canvas/text.cc       | 37 ++++++++++++++++++++++++++++++++++---
 5 files changed, 47 insertions(+), 9 deletions(-)

(limited to 'libs')

diff --git a/libs/canvas/canvas.cc b/libs/canvas/canvas.cc
index 0fced89bc4..c4eded11bf 100644
--- a/libs/canvas/canvas.cc
+++ b/libs/canvas/canvas.cc
@@ -77,9 +77,9 @@ Canvas::Canvas (XMLTree const * tree)
 void
 Canvas::render (Rect const & area, Cairo::RefPtr<Cairo::Context> const & context) const
 {
-	// cerr << "CANVAS @ " << this << endl;
-	// dump (cerr);
-	// cerr << "-------------------------\n";
+	cerr << "CANVAS @ " << this << endl;
+	dump (cerr);
+	cerr << "-------------------------\n";
 
 	checkpoint ("render", "-> render");
 	render_count = 0;
diff --git a/libs/canvas/canvas/text.h b/libs/canvas/canvas/text.h
index 9395b642e4..c65953783d 100644
--- a/libs/canvas/canvas/text.h
+++ b/libs/canvas/canvas/text.h
@@ -25,6 +25,7 @@ public:
 	void set_alignment (Pango::Alignment);
 
         void set_size_chars (int nchars);
+        void dump (std::ostream&) const;
 
 private:
 	std::string      _text;
diff --git a/libs/canvas/item.cc b/libs/canvas/item.cc
index 340c503fe7..9b44c333f5 100644
--- a/libs/canvas/item.cc
+++ b/libs/canvas/item.cc
@@ -341,11 +341,17 @@ Item::dump (ostream& o) const
 	boost::optional<Rect> bb = bounding_box();
 
 	o << _canvas->indent() << whatami() << ' ' << this;
+	
+#ifdef CANVAS_DEBUG
+	if (!name.empty()) {
+		o << ' ' << name;
+	}
+#endif
 
 	if (bb) {
 		o << endl << _canvas->indent() << "\tbbox: " << bb.get();
 	} else {
-		o << "bbox unset";
+		o << " bbox unset";
 	}
 
 	o << endl;
diff --git a/libs/canvas/poly_item.cc b/libs/canvas/poly_item.cc
index e43d48fa8d..d6e67ede0c 100644
--- a/libs/canvas/poly_item.cc
+++ b/libs/canvas/poly_item.cc
@@ -109,8 +109,8 @@ PolyItem::dump (ostream& o) const
 {
 	Item::dump (o);
 
-	o << _canvas->indent() << _points.size() << " points" << endl;
+	o << _canvas->indent() << '\t' << _points.size() << " points" << endl;
 	for (Points::const_iterator i = _points.begin(); i != _points.end(); ++i) {
-		o << i->x << ", " << i->y << endl;
+		o << _canvas->indent() << "\t\t" << i->x << ", " << i->y << endl;
 	}
 }
diff --git a/libs/canvas/text.cc b/libs/canvas/text.cc
index ee15b13ef6..162f814478 100644
--- a/libs/canvas/text.cc
+++ b/libs/canvas/text.cc
@@ -57,8 +57,9 @@ Text::redraw (Cairo::RefPtr<Cairo::Context> context) const
 	
 	_origin.x = ink_rect.get_x() / Pango::SCALE;
 	_origin.y = ink_rect.get_y() / Pango::SCALE;
-	_width = (ink_rect.get_width() + Pango::SCALE / 2) / Pango::SCALE;
-	_height = (ink_rect.get_height() + Pango::SCALE / 2) / Pango::SCALE;
+
+	_width = _origin.x + ((ink_rect.get_width() + Pango::SCALE / 2) / Pango::SCALE);
+	_height = _origin.y + ((ink_rect.get_height() + Pango::SCALE / 2) / Pango::SCALE);
 	
 	_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, _width, _height);
 
@@ -67,6 +68,14 @@ Text::redraw (Cairo::RefPtr<Cairo::Context> context) const
 	/* and draw, in the appropriate color of course */
 
 	set_source_rgba (img_context, _color);
+	
+	std::cerr << "render " << _text << " as " 
+		  << ((_color >> 24) & 0xff) / 255.0
+		  << ((_color >> 16) & 0xff) / 255.0
+		  << ((_color >>  8) & 0xff) / 255.0
+		  << ((_color >>  0) & 0xff) / 255.
+		  << std::endl;
+
 	layout->show_in_cairo_context (img_context);
 
 	/* text has now been rendered in _image and is ready for blit in
@@ -79,8 +88,18 @@ Text::redraw (Cairo::RefPtr<Cairo::Context> context) const
 void
 Text::compute_bounding_box () const
 {
-	_bounding_box = Rect (_origin.x, _origin.y, _origin.x + _width, _origin.y + _height);
+	if (!_canvas || !_canvas->context () || _text.empty()) {
+		_bounding_box = boost::optional<Rect> ();
+		_bounding_box_dirty = false;
+		return;
+	}
+
+	redraw (_canvas->context());
+
+	_bounding_box = Rect (_origin.x, _origin.y, _width - _origin.x, _height - _origin.y);
 	_bounding_box_dirty = false;
+
+	cerr << "bbox for " << _text << " = " << _bounding_box << endl;
 }
 
 void
@@ -93,6 +112,8 @@ Text::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) cons
 	if (_need_redraw) {
 		redraw (context);
 	}
+	
+	cerr << " with " << _origin  << " and " << _width << " x " << _height << " render " << _text << endl;
 
 	context->set_source (_image, 0, 0);
 	context->rectangle (0, 0, _width, _height);
@@ -152,3 +173,13 @@ Text::set_color (Color color)
 }
 
 		
+void
+Text::dump (ostream& o) const
+{
+	Item::dump (o);
+
+	o << _canvas->indent() << '\t' << " text = " << _text << endl
+	  << _canvas->indent() << " color = " << _color;
+
+	o << endl;
+}
-- 
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