1 // An image on the Canvas
3 // Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
5 // This library is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU Library General Public
7 // License as published by the Free Software Foundation; either
8 // version 2 of the License, or (at your option) any later version.
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // Library General Public License for more details.
15 // You should have received a copy of the GNU Library General Public
16 // License along with this library; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 #ifndef CANVAS_IMAGE_HXX_
20 #define CANVAS_IMAGE_HXX_
22 #include "CanvasElement.hxx"
24 #include <simgear/canvas/canvas_fwd.hxx>
25 #include <simgear/math/Rect.hxx>
26 #include <osg/Texture2D>
38 * @param node Property node containing settings for this image:
39 * rect/[left/right/top/bottom] Dimensions of source
41 * size[0-1] Dimensions of rectangle
42 * [x,y] Position of rectangle
44 Image( const CanvasWeakPtr& canvas,
45 const SGPropertyNode_ptr& node,
46 const Style& parent_style,
47 Element* parent = 0 );
50 virtual void update(double dt);
52 void setSrcCanvas(CanvasPtr canvas);
53 CanvasWeakPtr getSrcCanvas() const;
55 void setImage(osg::Image *img);
56 void setFill(const std::string& fill);
58 const Rect<float>& getRegion() const;
64 SRC_RECT = LAST_ATTRIBUTE << 1, // Source image rectangle
65 DEST_SIZE = SRC_RECT << 1 // Element size
68 virtual void childChanged(SGPropertyNode * child);
70 void setupDefaultDimensions();
71 Rect<int> getTextureDimensions() const;
73 osg::ref_ptr<osg::Texture2D> _texture;
74 // TODO optionally forward events to canvas
75 CanvasWeakPtr _src_canvas;
77 osg::ref_ptr<osg::Geometry> _geom;
78 osg::ref_ptr<osg::Vec3Array> _vertices;
79 osg::ref_ptr<osg::Vec2Array> _texCoords;
80 osg::ref_ptr<osg::Vec4Array> _colors;
82 SGPropertyNode *_node_src_rect;
83 Rect<float> _src_rect,
90 #endif /* CANVAS_IMAGE_HXX_ */