1 // An image on the canvas
3 // Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 #ifndef CANVAS_IMAGE_HXX_
20 #define CANVAS_IMAGE_HXX_
22 #include "element.hxx"
23 #include <Canvas/canvas_fwd.hpp>
24 #include <Canvas/rect.hxx>
26 #include <osg/Texture2D>
36 * @param node Property node containing settings for this image:
37 * rect/[left/right/top/bottom] Dimensions of source
39 * size[0-1] Dimensions of rectangle
40 * [x,y] Position of rectangle
42 Image(SGPropertyNode_ptr node);
45 virtual void update(double dt);
47 void setCanvas(CanvasPtr canvas);
48 CanvasWeakPtr getCanvas() const;
50 void setImage(osg::Image *img);
52 const Rect<float>& getRegion() const;
55 * Callback for every changed child node
57 virtual void valueChanged(SGPropertyNode *node);
63 SRC_RECT = LAST_ATTRIBUTE << 1, // Source image rectangle
64 DEST_SIZE = SRC_RECT << 1 // Element size
68 * Callback for changed direct child nodes
70 virtual void childChanged(SGPropertyNode * child);
71 virtual void colorFillChanged(const osg::Vec4& color);
73 void handleHit(float x, float y);
75 void setupDefaultDimensions();
76 Rect<int> getTextureDimensions() const;
78 osg::ref_ptr<osg::Texture2D> _texture;
79 // TODO optionally forward events to canvas
80 CanvasWeakPtr _canvas;
83 osg::Vec3Array *_vertices;
84 osg::Vec2Array *_texCoords;
85 osg::Vec4Array* _colors;
87 SGPropertyNode *_node_src_rect;
88 Rect<float> _src_rect,
94 #endif /* CANVAS_IMAGE_HXX_ */