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mo' better debugging of canvas "structure" via Item::dump and derivatives

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This commit is contained in:
Paul Davis 2013-04-08 19:48:09 -04:00
parent 18048747b6
commit 1267b1d61c
5 changed files with 47 additions and 9 deletions
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6
libs/canvas/canvas.cc
View file

@ -77,9 +77,9 @@ Canvas::Canvas (XMLTree const * tree)
void void
Canvas::render (Rect const & area, Cairo::RefPtr<Cairo::Context> const & context) const Canvas::render (Rect const & area, Cairo::RefPtr<Cairo::Context> const & context) const
{ {
// cerr << "CANVAS @ " << this << endl; cerr << "CANVAS @ " << this << endl;
// dump (cerr); dump (cerr);
// cerr << "-------------------------\n"; cerr << "-------------------------\n";
checkpoint ("render", "-> render"); checkpoint ("render", "-> render");
render_count = 0; render_count = 0;

1
libs/canvas/canvas/text.h
View file

@ -25,6 +25,7 @@ public:
void set_alignment (Pango::Alignment); void set_alignment (Pango::Alignment);
void set_size_chars (int nchars); void set_size_chars (int nchars);
void dump (std::ostream&) const;
private: private:
std::string _text; std::string _text;

6
libs/canvas/item.cc
View file

@ -342,6 +342,12 @@ Item::dump (ostream& o) const
o << _canvas->indent() << whatami() << ' ' << this; o << _canvas->indent() << whatami() << ' ' << this;
#ifdef CANVAS_DEBUG
if (!name.empty()) {
o << ' ' << name;
}
#endif
if (bb) { if (bb) {
o << endl << _canvas->indent() << "\tbbox: " << bb.get(); o << endl << _canvas->indent() << "\tbbox: " << bb.get();
} else { } else {

4
libs/canvas/poly_item.cc
View file

@ -109,8 +109,8 @@ PolyItem::dump (ostream& o) const
{ {
Item::dump (o); 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) { 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;
} }
} }

37
libs/canvas/text.cc
View file

@ -57,8 +57,9 @@ Text::redraw (Cairo::RefPtr<Cairo::Context> context) const
_origin.x = ink_rect.get_x() / Pango::SCALE; _origin.x = ink_rect.get_x() / Pango::SCALE;
_origin.y = ink_rect.get_y() / 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); _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 */ /* and draw, in the appropriate color of course */
set_source_rgba (img_context, _color); 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); layout->show_in_cairo_context (img_context);
/* text has now been rendered in _image and is ready for blit in /* 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 void
Text::compute_bounding_box () const 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; _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 void
@ -94,6 +113,8 @@ Text::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) cons
redraw (context); redraw (context);
} }
cerr << " with " << _origin << " and " << _width << " x " << _height << " render " << _text << endl;
context->set_source (_image, 0, 0); context->set_source (_image, 0, 0);
context->rectangle (0, 0, _width, _height); context->rectangle (0, 0, _width, _height);
context->fill (); context->fill ();
@ -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;
}