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/SGRect.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);
59 * Set image slice (aka. 9-scale)
61 * @see http://www.w3.org/TR/css3-background/#border-image-slice
63 void setSlice(const std::string& slice);
66 * Set image slice width.
68 * By default the size of the 9-scale grid is the same as specified
69 * with setSlice/"slice". Using this method allows setting values
70 * different to the size in the source image.
72 * @see http://www.w3.org/TR/css3-background/#border-image-width
74 void setSliceWidth(const std::string& width);
77 * http://www.w3.org/TR/css3-background/#border-image-outset
79 void setOutset(const std::string& outset);
81 const SGRect<float>& getRegion() const;
83 bool handleMouseEvent(MouseEventPtr event);
89 SRC_RECT = LAST_ATTRIBUTE << 1, // Source image rectangle
90 DEST_SIZE = SRC_RECT << 1 // Element size
96 struct { float t, r, b, l; };
102 struct { bool t_rel, r_rel, b_rel, l_rel; };
111 CSSOffsets getRelOffsets(const SGRect<int>& dim) const;
112 CSSOffsets getAbsOffsets(const SGRect<int>& dim) const;
115 CSSOffsetsTypes types;
120 virtual void childChanged(SGPropertyNode * child);
122 void setupDefaultDimensions();
123 SGRect<int> getTextureDimensions() const;
125 void setQuad(size_t index, const SGVec2f& tl, const SGVec2f& br);
126 void setQuadUV(size_t index, const SGVec2f& tl, const SGVec2f& br);
128 CSSBorder parseSideOffsets(const std::string& str) const;
130 osg::ref_ptr<osg::Texture2D> _texture;
131 // TODO optionally forward events to canvas
132 CanvasWeakPtr _src_canvas;
134 osg::ref_ptr<osg::Geometry> _geom;
135 osg::ref_ptr<osg::DrawArrays>_prim;
136 osg::ref_ptr<osg::Vec3Array> _vertices;
137 osg::ref_ptr<osg::Vec2Array> _texCoords;
138 osg::ref_ptr<osg::Vec4Array> _colors;
140 SGPropertyNode *_node_src_rect;
141 SGRect<float> _src_rect,
149 } // namespace canvas
150 } // namespace canvas
152 #endif /* CANVAS_IMAGE_HXX_ */