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Diffstat (limited to 'libs/canvas/canvas/text.h')
-rw-r--r-- | libs/canvas/canvas/text.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/libs/canvas/canvas/text.h b/libs/canvas/canvas/text.h new file mode 100644 index 0000000000..59d2007ceb --- /dev/null +++ b/libs/canvas/canvas/text.h @@ -0,0 +1,71 @@ +/* + 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. +*/ + +#ifndef __ardour_canvas_text_h__ +#define __ardour_canvas_text_h__ + +#include <pangomm/fontdescription.h> +#include <pangomm/layout.h> + +#include "canvas/visibility.h" +#include "canvas/item.h" + +namespace ArdourCanvas { + +class LIBCANVAS_API Text : public Item +{ +public: + Text (Group *); + ~Text(); + + void render (Rect const &, Cairo::RefPtr<Cairo::Context>) const; + void compute_bounding_box () const; + + void set (std::string const &); + void set_color (uint32_t); + void set_font_description (Pango::FontDescription); + void set_alignment (Pango::Alignment); + + void clamp_width (double); + + void set_size_chars (int nchars); + void dump (std::ostream&) const; + + std::string text() const { return _text; } + +private: + std::string _text; + uint32_t _color; + Pango::FontDescription* _font_description; + Pango::Alignment _alignment; + mutable Cairo::RefPtr<Cairo::ImageSurface> _image; + mutable Duple _origin; + mutable double _width; + mutable double _height; + mutable bool _need_redraw; + double _clamped_width; + + void redraw (Cairo::RefPtr<Cairo::Context>) const; + void redraw (Glib::RefPtr<Pango::Context>) const; + void _redraw (Glib::RefPtr<Pango::Layout>) const; +}; + +} + +#endif /* __ardour_canvas_text_h__ */ |