Thomas Geymayer
b36cdebe8b
Support for vertical and horizontal layouts. More layouts and widgets can be created using Nasal.
115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
// Align items horizontally or vertically in a box
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//
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// Copyright (C) 2014 Thomas Geymayer <tomgey@gmail.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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#ifndef SG_CANVAS_BOX_LAYOUT_HXX_
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#define SG_CANVAS_BOX_LAYOUT_HXX_
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#include "Layout.hxx"
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namespace simgear
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{
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namespace canvas
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{
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class BoxLayout:
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public Layout
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{
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public:
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enum Direction
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{
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LeftToRight,
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RightToLeft,
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TopToBottom,
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BottomToTop
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};
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BoxLayout(Direction dir);
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virtual void addItem(const LayoutItemRef& item);
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void addItem(const LayoutItemRef& item, int stretch);
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/**
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* Set the stretch factor of the item at position @a index to @a stretch.
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*/
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void setStretch(size_t index, int stretch);
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/**
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* Get the stretch factor of the item at position @a index
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*/
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int stretch(size_t index) const;
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virtual void setSpacing(int spacing);
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virtual int spacing() const;
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void setDirection(Direction dir);
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Direction direction() const;
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virtual void setCanvas(const CanvasWeakPtr& canvas);
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protected:
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typedef const int& (SGVec2i::*CoordGetter)() const;
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CoordGetter _get_layout_coord, //<! getter for coordinate in layout
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// direction
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_get_fixed_coord; //<! getter for coordinate in secondary
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// (fixed) direction
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int _padding;
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bool _reverse; //<! if true, right-to-left/bottom-to-top layouting
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mutable std::vector<ItemData> _layout_items;
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mutable ItemData _layout_data;
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void updateSizeHints() const;
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virtual SGVec2i sizeHintImpl() const;
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virtual SGVec2i minimumSizeImpl() const;
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virtual SGVec2i maximumSizeImpl() const;
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virtual void doLayout(const SGRecti& geom);
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};
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/**
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* Shortcut for creating a horizontal box layout
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*/
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class HBoxLayout:
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public BoxLayout
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{
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public:
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HBoxLayout();
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};
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/**
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* Shortcut for creating a vertical box layout
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*/
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class VBoxLayout:
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public BoxLayout
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{
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public:
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VBoxLayout();
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};
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} // namespace canvas
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} // namespace simgear
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#endif /* SG_CANVAS_BOX_LAYOUT_HXX_ */
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