2 /// Glue for GUI widgets implemented in Nasal space.
4 // Copyright (C) 2014 Thomas Geymayer <tomgey@gmail.com>
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Library General Public
8 // License as published by the Free Software Foundation; either
9 // version 2 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Library General Public License for more details.
16 // You should have received a copy of the GNU Library General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 #ifndef SG_CANVAS_NASAL_WIDGET_HXX_
21 #define SG_CANVAS_NASAL_WIDGET_HXX_
23 #include "LayoutItem.hxx"
25 #include <simgear/nasal/cppbind/from_nasal.hxx>
26 #include <simgear/nasal/cppbind/NasalHash.hxx>
27 #include <simgear/nasal/cppbind/NasalObject.hxx>
35 * Base class/ghost to implement gui widgets in Nasal space.
43 typedef boost::function<void (nasal::Me, const SGRecti&)> SetGeometryFunc;
44 typedef boost::function<int (nasal::Me, int)> HeightForWidthFunc;
48 * @param impl Initial implementation hash (nasal part of
51 NasalWidget(naRef impl);
55 virtual void onRemove();
57 void setSetGeometryFunc(const SetGeometryFunc& func);
58 void setHeightForWidthFunc(const HeightForWidthFunc& func);
59 void setMinimumHeightForWidthFunc(const HeightForWidthFunc& func);
63 * Overrides default size hint. Set to (0, 0) to fall back to default size
66 void setSizeHint(const SGVec2i& s);
70 * Overrides default minimum size. Set to (0, 0) to fall back to default
73 void setMinimumSize(const SGVec2i& s);
77 * Overrides default maximum size hint. Set to LayoutItem::MAX_SIZE to
78 * fall back to default maximum size.
80 void setMaximumSize(const SGVec2i& s);
82 void setLayoutSizeHint(const SGVec2i& s);
83 void setLayoutMinimumSize(const SGVec2i& s);
84 void setLayoutMaximumSize(const SGVec2i& s);
86 virtual bool hasHeightForWidth() const;
89 * @param ns Namespace to register the class interface
91 static void setupGhost(nasal::Hash& ns);
96 LAYOUT_DIRTY = LayoutItem::LAST_FLAG << 1,
97 LAST_FLAG = LAYOUT_DIRTY
100 SetGeometryFunc _set_geometry;
101 HeightForWidthFunc _height_for_width,
102 _min_height_for_width;
104 SGVec2i _layout_size_hint,
111 int callHeightForWidthFunc( const HeightForWidthFunc& hfw,
114 virtual SGVec2i sizeHintImpl() const;
115 virtual SGVec2i minimumSizeImpl() const;
116 virtual SGVec2i maximumSizeImpl() const;
118 virtual int heightForWidthImpl(int w) const;
119 virtual int minimumHeightForWidthImpl(int w) const;
121 virtual void contentsRectChanged(const SGRecti& rect);
123 virtual void visibilityChanged(bool visible);
127 typedef SGSharedPtr<NasalWidget> NasalWidgetRef;
129 } // namespace canvas
130 } // namespace simgear
133 #endif /* SG_CANVAS_NASAL_WIDGET_HXX_ */