diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2014-06-22 09:53:14 -0400 |
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committer | Paul Davis <paul@linuxaudiosystems.com> | 2014-06-22 09:53:14 -0400 |
commit | f0933bf00551ce998ca441aa5611d27702f6e590 (patch) | |
tree | 4e1ed902bf98d426e2befcdefc0d6671f9b7a11c /libs/canvas/layout.cc | |
parent | ff46a3c3a216afc97fee0c796ac2eaa92d58becb (diff) |
add missing new files for canvas redesign
Diffstat (limited to 'libs/canvas/layout.cc')
-rw-r--r-- | libs/canvas/layout.cc | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/libs/canvas/layout.cc b/libs/canvas/layout.cc new file mode 100644 index 0000000000..ca9f50d05e --- /dev/null +++ b/libs/canvas/layout.cc @@ -0,0 +1,132 @@ +/* + Copyright (C) 2011-2014 Paul Davis + Author: Carl Hetherington <cth@carlh.net> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "pbd/compose.h" + +#include "canvas/canvas.h" +#include "canvas/debug.h" +#include "canvas/layout.h" + +using namespace std; +using namespace PBD; +using namespace ArdourCanvas; + +Layout::Layout (Canvas* canvas) + : Container (canvas) +{ +} + +Layout::Layout (Item* parent) + : Container (parent) +{ +} + +Layout::Layout (Item* parent, Duple const & p) + : Container (parent, p) +{ +} + +/** @param area Area to draw in window coordinates. + * @param context Context, set up with its origin at this layout's position. + */ +void +Layout::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const +{ + ensure_lut (); + std::vector<Item*> items = _lut->get (area); + +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << string_compose ("%1GROUP %2 @ %7 render %5 @ %6 %3 items out of %4\n", + _canvas->render_indent(), (name.empty() ? string ("[unnamed]") : name), items.size(), _items.size(), area, _position, this); + } +#endif + + ++render_depth; + + for (std::vector<Item*>::const_iterator i = items.begin(); i != items.end(); ++i) { + + if (!(*i)->visible ()) { +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << _canvas->render_indent() << "Item " << (*i)->whatami() << " [" << (*i)->name << "] invisible - skipped\n"; + } +#endif + continue; + } + + boost::optional<Rect> item_bbox = (*i)->bounding_box (); + + if (!item_bbox) { +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << _canvas->render_indent() << "Item " << (*i)->whatami() << " [" << (*i)->name << "] empty - skipped\n"; + } +#endif + continue; + } + + Rect item = (*i)->item_to_window (item_bbox.get()); + boost::optional<Rect> d = item.intersection (area); + + if (d) { + Rect draw = d.get(); + if (draw.width() && draw.height()) { +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + if (dynamic_cast<Container*>(*i) == 0) { + cerr << _canvas->render_indent() << "render " + << ' ' + << (*i) + << ' ' + << (*i)->whatami() + << ' ' + << (*i)->name + << " item " + << item_bbox.get() + << " window = " + << item + << " intersect = " + << draw + << " @ " + << _position + << endl; + } + } +#endif + + (*i)->render (area, context); + ++render_count; + } + + } else { + +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << string_compose ("%1skip render of %2 %3, no intersection between %4 and %5\n", _canvas->render_indent(), (*i)->whatami(), + (*i)->name, item, area); + } +#endif + + } + } + + --render_depth; +} + |