+/*
+ Copyright (C) 2011-2013 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 <gdk/gdk.h>
#include <cairomm/cairomm.h>
#include <gtkmm/label.h>
-#include "pbd/xml++.h"
#include "pbd/stacktrace.h"
#include "canvas/text.h"
, _width (0)
, _height (0)
, _need_redraw (false)
+ , _clamped_width (COORD_MAX)
{
}
void
Text::redraw (Cairo::RefPtr<Cairo::Context> context) const
{
+ if (_text.empty()) {
+ return;
+ }
+
Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
layout->set_text (_text);
/* and draw, in the appropriate color of course */
set_source_rgba (img_context, _color);
+
layout->show_in_cairo_context (img_context);
/* text has now been rendered in _image and is ready for blit in
_need_redraw = false;
}
-void
-Text::compute_bounding_box () const
-{
- if (!_canvas || _text.empty()) {
- _bounding_box = boost::optional<Rect> ();
- _bounding_box_dirty = false;
- return;
- }
-
- PangoContext* _pc = gdk_pango_context_get ();
- Glib::RefPtr<Pango::Context> context = Glib::wrap (_pc); // context now owns _pc and will free it
- Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
-
- layout->set_text (_text);
- layout->set_font_description (*_font_description);
- layout->set_alignment (_alignment);
- Pango::Rectangle const r = layout->get_ink_extents ();
-
- _bounding_box = Rect (
- r.get_x() / Pango::SCALE,
- r.get_y() / Pango::SCALE,
- (r.get_x() + r.get_width()) / Pango::SCALE,
- (r.get_y() + r.get_height()) / Pango::SCALE
- );
-
- _bounding_box_dirty = false;
-}
-
void
Text::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) const
{
redraw (context);
}
- context->set_source (_image, 0, 0);
- context->rectangle (0, 0, _width, _height);
+ Rect self = item_to_window (Rect (0, 0, min (_clamped_width, _width), _height));
+ context->rectangle (self.x0, self.y0, self.width(), self.height());
+ context->set_source (_image, self.x0, self.y0);
context->fill ();
}
-XMLNode *
-Text::get_state () const
+void
+Text::clamp_width (double w)
{
- XMLNode* node = new XMLNode ("Text");
-#ifdef CANVAS_DEBUG
- if (!name.empty ()) {
- node->add_property ("name", name);
- }
-#endif
- return node;
+ _clamped_width = w;
}
void
-Text::set_state (XMLNode const * /*node*/)
+Text::compute_bounding_box () const
{
- /* XXX */
+ if (!_canvas || _text.empty()) {
+ _bounding_box = boost::optional<Rect> ();
+ _bounding_box_dirty = false;
+ return;
+ }
+
+ if (_bounding_box_dirty) {
+ if (!_image) {
+
+ PangoContext* _pc = gdk_pango_context_get ();
+ Glib::RefPtr<Pango::Context> context = Glib::wrap (_pc); // context now owns _pc and will free it
+ Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
+
+ layout->set_text (_text);
+ if (_font_description) {
+ layout->set_font_description (*_font_description);
+ }
+ layout->set_alignment (_alignment);
+ Pango::Rectangle const r = layout->get_ink_extents ();
+
+ _bounding_box = Rect (
+ 0, 0,
+ (r.get_x() + r.get_width()) / Pango::SCALE,
+ (r.get_y() + r.get_height()) / Pango::SCALE
+ );
+ } else {
+
+ _bounding_box = Rect (0, 0, _image->get_width(), _image->get_height());
+ }
+
+ _bounding_box_dirty = false;
+ }
}
void