642 lines
18 KiB
C++
642 lines
18 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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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
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* OpenSceneGraph Public License for more details.
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*/
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// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
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// $Id: Widget 64 2008-06-30 21:32:00Z cubicool $
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#ifndef OSGWIDGET_WIDGET
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#define OSGWIDGET_WIDGET
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#include <osg/Texture2D>
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#include <osgWidget/EventInterface>
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#include <osgWidget/StyleInterface>
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#include <osgWidget/UIObjectParent>
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#include <osgWidget/Types>
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namespace osgWidget {
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class Window;
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class WindowManager;
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// A Widget is a rectangular region that recieves events about the state of various input
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// devices such as the pointer and keyboard. It is aware of it's width, height, and origin but
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// nothing else. It is the job of higher-level container objects to organize layouts and
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// the like, and to contextualize the meaning of the widgets "origin" (whether it is absolute
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// or relative).
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class OSGWIDGET_EXPORT Widget: public osg::Geometry, public EventInterface, public StyleInterface {
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public:
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enum Corner {
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LOWER_LEFT = 0,
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LOWER_RIGHT = 1,
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UPPER_RIGHT = 2,
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UPPER_LEFT = 3,
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LL = LOWER_LEFT,
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LR = LOWER_RIGHT,
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UR = UPPER_RIGHT,
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UL = UPPER_LEFT,
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ALL_CORNERS = 4
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};
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enum Layer {
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LAYER_TOP = 20,
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LAYER_HIGH = 15,
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LAYER_MIDDLE = 10,
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LAYER_LOW = 5,
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LAYER_BG = 0
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};
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enum VerticalAlignment {
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VA_CENTER,
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VA_TOP,
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VA_BOTTOM
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};
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enum HorizontalAlignment {
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HA_CENTER,
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HA_LEFT,
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HA_RIGHT
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};
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enum CoordinateMode {
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CM_ABSOLUTE,
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CM_RELATIVE
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};
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Widget (const std::string& = "", point_type = 0.0f, point_type = 0.0f);
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Widget (const Widget&, const osg::CopyOp&);
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META_Object (osgWidget, Widget);
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virtual ~Widget() {
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}
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// This method is called when the widget is added to a Window; this is useful
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// when the widget needs to do something advanced (like a Label). The parent
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// is passed as the first argument, although _parent should already be set.
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virtual void parented(Window*) {
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}
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virtual void unparented(Window*) {
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}
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// This method is called when the widget's parent Window is added to a
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// WindowManager object. The base managed method (WHICH YOU MUST REMEMBER
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// TO CALL IN YOUR DERIVED METHODS!) sets the TexMat properly depending
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// on what coordinate system you're using.
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virtual void managed(WindowManager*);
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virtual void unmanaged(WindowManager*) {
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}
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// This method is called when the widget is resized or reallocated in any
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// way. This is useful when the widget manages some internal Drawables that need
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// to be modified in some way.
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virtual void positioned() {
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}
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void setDimensions(
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point_type = -1.0f,
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point_type = -1.0f,
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point_type = -1.0f,
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point_type = -1.0f,
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point_type = -1.0f
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);
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void setPadding (point_type);
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void setColor (color_type, color_type, color_type, color_type, Corner = ALL_CORNERS);
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void addColor (color_type, color_type, color_type, color_type, Corner = ALL_CORNERS);
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void setTexCoord (texcoord_type, texcoord_type, Corner = ALL_CORNERS);
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// These are additional texture coordinate setting methods.
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// This method will use a given origin as the LOWER_LEFT point and texture the
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// remaining area based on some width and height values.
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void setTexCoordRegion(point_type, point_type, point_type, point_type);
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// These are convenience methods for setting up wrapping modes.
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void setTexCoordWrapHorizontal ();
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void setTexCoordWrapVertical ();
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bool setImage (osg::Image*, bool=false);
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bool setImage (const std::string&, bool=false);
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void addX (point_type);
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void addY (point_type);
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void addWidth (point_type);
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void addHeight (point_type);
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void addOrigin (point_type, point_type);
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void addSize (point_type, point_type);
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point_type getWidth () const;
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point_type getHeight () const;
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point_type getX () const;
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point_type getY () const;
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point_type getZ () const;
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point_type getPadHorizontal () const;
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point_type getPadVertical () const;
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const Point& getPoint (Corner = ALL_CORNERS) const;
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const Color& getColor (Corner = ALL_CORNERS) const;
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const TexCoord& getTexCoord (Corner = ALL_CORNERS) const;
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Corner convertCorner (Corner) const;
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Color getImageColorAtXY (point_type x, point_type y) const;
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XYCoord localXY (double, double) const;
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bool isPaddingUniform() const;
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bool isManaged() const {
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return _isManaged;
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}
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bool isStyled() const {
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return _isStyled;
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}
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void setDimensions(const Quad& q, point_type z = -1.0f) {
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setDimensions(q[0], q[1], q[2], q[4], z);
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}
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void setX(point_type x) {
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setDimensions(x);
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}
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void setY(point_type y) {
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setDimensions(-1.0f, y);
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}
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// This method should be use with extreme caution.
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void setZ(point_type z) {
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setDimensions(-1.0f, -1.0f, -1.0f, -1.0f, z);
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}
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void setWidth(point_type w) {
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setDimensions(-1.0f, -1.0f, w);
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}
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void setHeight(point_type h) {
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setDimensions(-1.0f, -1.0f, -1.0f, h);
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}
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void setOrigin(point_type x, point_type y) {
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setDimensions(x, y);
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}
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void setOrigin(const XYCoord& xy) {
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setOrigin(xy.x(), xy.y());
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}
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void setSize(point_type w, point_type h) {
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setDimensions(-1.0f, -1.0f, w, h);
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}
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void setSize(const XYCoord& xy) {
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setSize(xy.x(), xy.y());
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}
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void setColor(const Color& col, Corner p = ALL_CORNERS) {
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setColor(col.r(), col.g(), col.b(), col.a(), p);
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}
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void setTexCoord(const XYCoord& xy, Corner p = ALL_CORNERS) {
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setTexCoord(xy.x(), xy.y(), p);
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}
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void setTexCoordRegion(const XYCoord& xy, point_type w, point_type h) {
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setTexCoordRegion(xy.x(), xy.y(), w, h);
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}
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void addColor(const Color& col, Corner p = ALL_CORNERS) {
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addColor(col.r(), col.g(), col.b(), col.a(), p);
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}
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void addOrigin(const XYCoord& xy) {
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addOrigin(xy.x(), xy.y());
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}
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void addSize(const XYCoord& xy) {
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addSize(xy.x(), xy.y());
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}
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void setMinimumSize(point_type width, point_type height) {
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_minWidth = width;
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_minHeight = height;
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}
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void setMinimumSize(const XYCoord& xy) {
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setMinimumSize(xy.x(), xy.y());
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}
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// TODO: Refine this...
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void setLayer(Layer l, unsigned int offset = 0) {
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_layer = l + offset;
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}
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void setPadLeft(point_type p) {
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_padLeft = p;
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}
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void setPadRight(point_type p) {
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_padRight = p;
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}
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void setPadTop(point_type p) {
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_padTop = p;
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}
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void setPadBottom(point_type p) {
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_padBottom = p;
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}
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void setAlignHorizontal(HorizontalAlignment h) {
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_halign = h;
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}
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void setAlignVertical(VerticalAlignment v) {
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_valign = v;
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}
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void setCoordinateMode(CoordinateMode cm) {
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_coordMode = cm;
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}
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void setCanFill(bool f) {
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_canFill = f;
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}
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void setCanClone(bool c) {
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_canClone = c;
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}
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WindowManager* getWindowManager() {
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return _getWindowManager();
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}
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const WindowManager* getWindowManager() const {
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return _getWindowManager();
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}
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Window* getParent() {
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return _parent;
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}
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const Window* getParent() const {
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return _parent;
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}
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unsigned int getIndex() const {
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return _index;
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}
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XYCoord getOrigin() const {
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return XYCoord(getX(), getY());
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}
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Color getImageColorAtXY(const XYCoord& xy) const {
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return getImageColorAtXY(xy.x(), xy.y());
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}
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Color getImageColorAtPointerXY(double x, double y) const {
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return getImageColorAtXY(localXY(x, y));
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}
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Point getPosition() const {
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return Point(getX(), getY(), getZ());
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}
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XYCoord getSize() const {
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return XYCoord(getWidth(), getHeight());
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}
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Quad getDimensions() const {
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return Quad(getX(), getY(), getWidth(), getHeight());
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}
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point_type getPadLeft() const {
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return _padLeft;
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}
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point_type getPadRight() const {
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return _padRight;
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}
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point_type getPadTop() const {
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return _padTop;
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}
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point_type getPadBottom() const {
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return _padBottom;
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}
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HorizontalAlignment getAlignHorizontal() const {
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return _halign;
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}
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VerticalAlignment getAlignVertical() const {
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return _valign;
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}
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CoordinateMode getCoordinateMode() const {
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return _coordMode;
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}
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bool canFill() const {
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return _canFill;
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}
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bool canClone() const {
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return _canClone;
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}
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// This casts the bool _fill variable to be used in iteratively in functions such
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// as Window::_accumulate and whatnot.
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point_type getFillAsNumeric() const {
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return static_cast<point_type>(_canFill);
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}
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point_type getWidthTotal() const {
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return getWidth() + getPadHorizontal();
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}
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point_type getHeightTotal() const {
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return getHeight() + getPadVertical();
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}
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point_type getMinWidth() const {
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return _minWidth;
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}
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point_type getMinHeight() const {
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return _minHeight;
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}
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point_type getMinWidthTotal() const {
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return _minWidth + getPadHorizontal();
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}
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point_type getMinHeightTotal() const {
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return _minHeight + getPadVertical();
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}
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unsigned int getLayer() const {
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return _layer;
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}
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protected:
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point_type _calculateZ(unsigned int) const;
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PointArray* _verts() {
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return dynamic_cast<PointArray*>(getVertexArray());
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}
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const PointArray* _verts() const {
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return dynamic_cast<const PointArray*>(getVertexArray());
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}
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ColorArray* _cols() {
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return dynamic_cast<ColorArray*>(getColorArray());
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}
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const ColorArray* _cols() const {
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return dynamic_cast<const ColorArray*>(getColorArray());
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}
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TexCoordArray* _texs() {
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return dynamic_cast<TexCoordArray*>(getTexCoordArray(0));
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}
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const TexCoordArray* _texs() const {
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return dynamic_cast<const TexCoordArray*>(getTexCoordArray(0));
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}
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osg::Texture2D* _texture() {
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return dynamic_cast<osg::Texture2D*>(
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getStateSet()->getTextureAttribute(0, osg::StateAttribute::TEXTURE)
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);
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}
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const osg::Texture2D* _texture() const {
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return dynamic_cast<const osg::Texture2D*>(
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getStateSet()->getTextureAttribute(0, osg::StateAttribute::TEXTURE)
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);
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}
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osg::Image* _image() {
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return _getImage();
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}
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const osg::Image* _image() const {
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return _getImage();
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}
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friend class Window;
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// TODO: Because of the current class design, I don't think it's possible to
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// have a ref_ptr here. :(
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Window* _parent;
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unsigned int _index;
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unsigned int _layer;
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// Padding is the value of pixels of space between whatever the widget is "contianed"
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// in and the point at which it starts getting placed.
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point_type _padLeft;
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point_type _padRight;
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point_type _padTop;
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point_type _padBottom;
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// The alignments are used in conjuction when the widget is NOT set to fill.
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VerticalAlignment _valign;
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HorizontalAlignment _halign;
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// This flag determines how sizing values are interpretted by setDimensions().
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CoordinateMode _coordMode;
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// These are the relative values, which are not stored directly in our verts
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// array but kept around for calculation later.
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Quad _relCoords;
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// This fill flag determines whether or not the widget will resize itself to fill
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// all available space.
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bool _canFill;
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// Set this to false in an implementation to prevent copying.
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bool _canClone;
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// This variable is only used by the Window object to determine if it's necessary
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// to call managed().
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bool _isManaged;
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// This variable is like _isManaged; it is used to store whether the Widget has
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// been styled yet.
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bool _isStyled;
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// Set these variables to be the minimum size of a Widget so that it cannot be
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// resized any smaller than this.
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point_type _minWidth;
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point_type _minHeight;
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static osg::ref_ptr<PointArray> _norms;
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WindowManager* _getWindowManager () const;
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osg::Image* _getImage () const;
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};
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typedef std::list<osg::observer_ptr<Widget> > WidgetList;
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// A Widget subclass that prints stuff using osg::notify(). :)
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struct NotifyWidget: public Widget {
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META_Object(osgWidget, NotifyWidget);
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NotifyWidget(const std::string& n = "", point_type w = 0.0f, point_type h = 0.0f):
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Widget(n, w, h) {
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setEventMask(EVENT_ALL);
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}
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NotifyWidget(const NotifyWidget& widget, const osg::CopyOp& co):
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Widget(widget, co) {
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}
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bool focus(const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > focus called" << std::endl;
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return false;
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}
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bool unfocus(const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > unfocus called" << std::endl;
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return false;
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}
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bool mouseEnter(double, double, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > mouseEnter called" << std::endl;
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return false;
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}
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bool mouseOver(double, double, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > mouseOver called" << std::endl;
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return false;
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}
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bool mouseLeave(double, double, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > mouseLeave called" << std::endl;
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return false;
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}
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bool mouseDrag(double, double, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > mouseDrag called" << std::endl;
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return false;
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}
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bool mousePush(double, double, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > mousePush called" << std::endl;
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return false;
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}
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bool mouseRelease(double, double, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > mouseRelease called" << std::endl;
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return false;
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}
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bool mouseScroll(double, double, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > mouseScroll called" << std::endl;
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return false;
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}
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bool keyPress(int, int, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > keyPress called" << std::endl;
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return false;
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}
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bool keyRelease(int, int, const WindowManager*) {
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osg::notify(osg::NOTICE) << _name << " > keyRelease called" << std::endl;
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return false;
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}
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};
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// A Widget that eats all events and returns true.
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struct NullWidget: public Widget {
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META_Object(osgWidget, NullWidget);
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NullWidget(const std::string& n = "", point_type w = 0.0f, point_type h = 0.0f):
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Widget(n, w, h) {
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setEventMask(EVENT_ALL);
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}
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NullWidget(const NullWidget& widget, const osg::CopyOp& co):
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Widget(widget, co) {
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}
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bool focus(const WindowManager*) {
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return true;
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}
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bool unfocus(const WindowManager*) {
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return true;
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}
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bool mouseEnter(double, double, const WindowManager*) {
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return true;
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}
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bool mouseOver(double, double, const WindowManager*) {
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return true;
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}
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bool mouseLeave(double, double, const WindowManager*) {
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return true;
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}
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bool mouseDrag(double, double, const WindowManager*) {
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return true;
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}
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bool mousePush(double, double, const WindowManager*) {
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return true;
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}
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bool mouseRelease(double, double, const WindowManager*) {
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return true;
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}
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bool mouseScroll(double, double, const WindowManager*) {
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return true;
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}
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bool keyPress(int, int, const WindowManager*) {
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|
return true;
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}
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bool keyRelease(int, int, const WindowManager*) {
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return true;
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}
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};
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}
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#endif
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