392 lines
12 KiB
C++
392 lines
12 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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// Code by: Jeremy Moles (cubicool) 2007-2008
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#ifndef OSGWIDGET_WINDOW_MANAGER
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#define OSGWIDGET_WINDOW_MANAGER
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#include <osg/Switch>
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#include <osg/Uniform>
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#include <osg/Drawable>
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#include <osgGA/GUIEventAdapter>
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#include <osgUtil/LineSegmentIntersector>
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#include <osgViewer/View>
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#include <osgWidget/ScriptEngine>
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#include <osgWidget/StyleManager>
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#include <osgWidget/Window>
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namespace osgWidget {
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// TODO: It should be possible to use something other than osgWidget/ViewerEventHandlers
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// to handle all of these events. In fact, I need to create an SDL example showing this.
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// A private typedef that we use for pickAtXY() below.
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typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
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// A WindowManager performs pointer interaction with the topmost (highest Z) Widget,
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// and performs keyboard input on the currently focused Window->Widget.
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class OSGWIDGET_EXPORT WindowManager: public osg::Switch, public UIObjectParent<Window> {
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public:
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enum WmFlags {
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WM_USE_LUA = 0x00000001,
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WM_USE_PYTHON = 0x00000002,
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WM_USE_RENDERBINS = 0x00000004,
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WM_PICK_DEBUG = 0x00000008
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};
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enum PointerDirection {
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PD_NONE = 0x00000000,
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PD_LEFT = 0x00000001,
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PD_RIGHT = 0x00000002,
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PD_UP = 0x00000004,
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PD_DOWN = 0x00000008
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};
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enum PointerFocusMode {
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PFM_FOCUS = 0x00000000,
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PFM_UNFOCUS = 0x00000001,
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PFM_SLOPPY = 0x00000002
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};
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public:
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META_Object(osgWidget, WindowManager);
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WindowManager(
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osgViewer::View* = 0,
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point_type = 0.0f,
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point_type = 0.0f,
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unsigned int = 0,
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unsigned int = 0
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);
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WindowManager(const WindowManager&, const osg::CopyOp&);
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virtual ~WindowManager();
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// A static method that will set both the _widget and _window data of an Event
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// reference from a passed-in Interface.
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static void setEventFromInterface(Event&, EventInterface*);
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// A static template method that will iterate over a container and return a
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// properly formed EventInterface*.
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template<typename T>
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static EventInterface* getFirstEventInterface(T&, Event&);
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bool pickAtXY (float, float, WidgetList&);
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bool setFocused (Window*);
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void setPointerXY (float, float);
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void setStyleManager (StyleManager*);
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void resizeAllWindows (bool = true);
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XYCoord windowXY (double, double) const;
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XYCoord localXY (double, double) const;
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// Methods all called by the ViewerEventHandlers::MouseHandler object, or
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// by some customer caller of your own. Examples of this to come...
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bool pointerMove (float, float);
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bool pointerDrag (float, float);
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bool mouseScroll (float, float);
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osg::Camera* createParentOrthoCamera();
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unsigned int getNodeMask() const {
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return _nodeMask;
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}
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point_type getWidth() const {
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return _width;
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}
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point_type getHeight() const {
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return _height;
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}
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bool isUsingLua() const {
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return (_flags & WM_USE_LUA) != 0;
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}
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bool isUsingPython() const {
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return (_flags & WM_USE_PYTHON) != 0;
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}
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bool isUsingRenderBins() const {
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return (_flags & WM_USE_RENDERBINS) != 0;
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}
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int getMouseKeysDown() const {
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int flag = 0;
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flag |= _leftDown ? osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON : 0;
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flag |= _middleDown ? osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON: 0;
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flag |= _rightDown ? osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON : 0;
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return flag;
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}
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ScriptEngine* getLuaEngine() {
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return _lua.get();
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}
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const ScriptEngine* getLuaEngine() const {
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return _lua.get();
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}
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ScriptEngine* getPythonEngine() {
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return _python.get();
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}
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const ScriptEngine* getPythonEngine() const {
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return _python.get();
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}
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StyleManager* getStyleManager() {
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return _styleManager.get();
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}
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const StyleManager* getStyleManager() const {
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return _styleManager.get();
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}
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PointerDirection getPointerVerticalDirection() const {
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return _lastVertical;
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}
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PointerDirection getPointerHorizontalDirection() const {
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return _lastHorizontal;
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}
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PointerFocusMode getPointerFocusMode() const {
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return _focusMode;
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}
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int getPointerDirectionVector() const {
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return _lastVertical | _lastHorizontal;
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}
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bool isPointerMovingUp() const {
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return _lastVertical == PD_UP;
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}
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bool isPointerMovingDown() const {
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return _lastVertical == PD_DOWN;
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}
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bool isPointerMovingLeft() const {
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return _lastHorizontal == PD_LEFT;
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}
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bool isPointerMovingRight() const {
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return _lastHorizontal == PD_RIGHT;
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}
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bool isPointerMovingVertically() const {
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return _lastVertical != PD_NONE;
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}
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bool isPointerMovingHorizontally() const {
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return _lastHorizontal != PD_NONE;
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}
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bool isLeftMouseButtonDown() const {
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return _leftDown;
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}
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bool isMiddleMouseButtonDown() const {
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return _middleDown;
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}
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bool isRightMouseButtonDown() const {
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return _rightDown;
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}
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bool isMouseScrollingUp() const {
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return _scrolling == osgGA::GUIEventAdapter::SCROLL_UP;
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}
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bool isMouseScrollingDown() const {
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return _scrolling == osgGA::GUIEventAdapter::SCROLL_DOWN;
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}
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bool setFocusedByName(const std::string& name) {
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return setFocused(getByName(name));
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}
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void setScrollingMotion(osgGA::GUIEventAdapter::ScrollingMotion sm) {
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_scrolling = sm;
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}
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void setPointerFocusMode(PointerFocusMode pfm) {
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_focusMode = pfm;
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}
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void setWidth(point_type w) {
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_width = w;
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}
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void setHeight(point_type h) {
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_height = h;
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}
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void setSize(point_type w, point_type h) {
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_width = w;
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_height = h;
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}
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void setWindowSize(point_type w, point_type h) {
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_windowWidth = w;
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_windowHeight = h;
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}
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// Wrappers around the real calls. These only pertains to mouse buttons,
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// particularly 3-button mice, although there are other more generic
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// "pointer" API methods.
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bool mousePushedLeft(float x, float y) {
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return _handleMousePushed(x, y, _leftDown);
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}
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bool mousePushedMiddle(float x, float y) {
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return _handleMousePushed(x, y, _middleDown);
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}
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bool mousePushedRight(float x, float y) {
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return _handleMousePushed(x, y, _rightDown);
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}
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bool mouseReleasedLeft(float x, float y) {
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return _handleMouseReleased(x, y, _leftDown);
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}
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bool mouseReleasedMiddle(float x, float y) {
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return _handleMouseReleased(x, y, _middleDown);
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}
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bool mouseReleasedRight(float x, float y) {
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return _handleMouseReleased(x, y, _rightDown);
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}
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// Keyboards wrappers, as above; takes the key and key's mask code, which
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// can be compared to osgGA::GUIEventAdapter::{KeySymbol,KeyModMask}.
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bool keyDown (int, int);
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bool keyUp (int, int);
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osgViewer::View* getView() { return _view; }
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const osgViewer::View* getView() const { return _view; }
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private:
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// A functor used to sort the Windows by their Z component in descending order.
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struct WindowZCompare
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{
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bool operator()(const ptr_type& x, const ptr_type& y) {
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return x.get()->getZ() > y.get()->getZ();
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}
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};
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// A functor used to sort the Windows by their BinNum component in descending order.
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struct WindowBinNumberCompare
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{
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bool operator()(const ptr_type& x, const ptr_type& y) {
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return
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x.get()->getOrCreateStateSet()->getBinNumber() >
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y.get()->getOrCreateStateSet()->getBinNumber()
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;
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}
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};
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point_type _width;
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point_type _height;
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point_type _windowWidth;
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point_type _windowHeight;
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unsigned int _flags;
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unsigned int _nodeMask;
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osgViewer::View* _view;
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float _lastX;
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float _lastY;
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EventInterface* _lastEvent;
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EventInterface* _lastPush;
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PointerDirection _lastVertical;
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PointerDirection _lastHorizontal;
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PointerFocusMode _focusMode;
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bool _leftDown;
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bool _middleDown;
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bool _rightDown;
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osgGA::GUIEventAdapter::ScrollingMotion _scrolling;
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osg::ref_ptr<ScriptEngine> _lua;
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osg::ref_ptr<ScriptEngine> _python;
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osg::ref_ptr<StyleManager> _styleManager;
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osg::observer_ptr<Widget> _widget;
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osg::observer_ptr<Window> _focused;
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osg::observer_ptr<Window> _pickWindow;
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void childInserted (unsigned int);
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void childRemoved (unsigned int, unsigned int);
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bool _handleMousePushed (float, float, bool&);
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bool _handleMouseReleased (float, float, bool&);
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bool _handleMouseScrolled (float, float, bool = false);
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void _getPointerXYDiff (float&, float&);
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void _updatePickWindow (const WidgetList*, point_type, point_type);
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};
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// We use a template here because the container could be a list or a vector; or something
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// else that supports iteration!
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template<typename T>
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EventInterface* WindowManager::getFirstEventInterface(T& container, Event& ev) {
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if(!container.size()) return 0;
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// See if we can find a Widget that responds to this event...
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for(typename T::iterator i = container.begin(); i != container.end(); i++) {
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Widget* widget = i->get();
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// If so, set the _widget/_window members and return it.
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if(widget->getEventMask() & ev.type) {
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ev._window = widget->getParent();
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ev._widget = widget;
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return widget;
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}
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}
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// If we can't find a Widget that will accept this event, try and recurse all
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// of the parent Windows and find one that can.
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WindowList windowList;
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Window* parent = container.back()->getParent();
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if(parent) {
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parent->getParentList(windowList);
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// A WindowList from getParentList includes the Window the method was called
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// on, and the entire tree of parentage.
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for(WindowList::iterator i = windowList.begin(); i != windowList.end(); i++) {
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Window* window = i->get();
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if(window->getEventMask() & ev.type) {
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ev._window = window;
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return window;
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}
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}
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}
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return 0;
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}
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}
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#endif
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