-// The canvas for rendering with the 2d API
+///@file
+/// The canvas for rendering with the 2d API
//
// Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
//
#include "ODGauge.hxx"
#include <simgear/canvas/elements/CanvasGroup.hxx>
+#include <simgear/canvas/layout/Layout.hxx>
#include <simgear/math/SGRect.hxx>
+#include <simgear/nasal/cppbind/NasalObject.hxx>
#include <simgear/props/PropertyBasedElement.hxx>
#include <simgear/props/propertyObject.hxx>
+
#include <osg/NodeCallback>
#include <osg/observer_ptr>
-#include <memory>
+#include <boost/scoped_ptr.hpp>
#include <string>
namespace simgear
{
+/// Canvas 2D drawing API
namespace canvas
{
class CanvasMgr;
class MouseEvent;
+ /**
+ * Canvas to draw onto (to an off-screen render target).
+ */
class Canvas:
- public PropertyBasedElement
+ public PropertyBasedElement,
+ public nasal::Object
{
public:
enum StatusFlags
{
STATUS_OK,
- STATUS_DIRTY = 1,
+ STATUS_DIRTY = 1,
MISSING_SIZE_X = STATUS_DIRTY << 1,
MISSING_SIZE_Y = MISSING_SIZE_X << 1,
+ MISSING_SIZE = MISSING_SIZE_X | MISSING_SIZE_Y,
CREATE_FAILED = MISSING_SIZE_Y << 1
};
Canvas(SGPropertyNode* node);
virtual ~Canvas();
-
- void setSystemAdapter(const SystemAdapterPtr& system_adapter);
- SystemAdapterPtr getSystemAdapter() const;
+ virtual void onDestroy();
void setCanvasMgr(CanvasMgr* canvas_mgr);
CanvasMgr* getCanvasMgr() const;
bool isInit() const;
- void destroy();
/**
* Add a canvas which should be marked as dirty upon any change to this
void removeParentCanvas(const CanvasWeakPtr& canvas);
void removeChildCanvas(const CanvasWeakPtr& canvas);
+ /**
+ * Create a new group
+ */
GroupPtr createGroup(const std::string& name = "");
+
+ /**
+ * Get an existing group with the given name
+ */
GroupPtr getGroup(const std::string& name);
+
+ /**
+ * Get an existing group with the given name or otherwise create a new
+ * group
+ */
+ GroupPtr getOrCreateGroup(const std::string& name);
+
+ /**
+ * Get the root group of the canvas
+ */
GroupPtr getRootGroup();
+ /**
+ * Set the layout of the canvas (the layout will automatically update with
+ * the viewport size of the canvas)
+ */
+ void setLayout(const LayoutRef& layout);
+
+ /**
+ * Set the focus to the given element.
+ *
+ * The focus element will receive all keyboard events propagated to this
+ * canvas. If there is no valid focus element the root group will receive
+ * the events instead.
+ */
+ void setFocusElement(const ElementPtr& el);
+
+ /**
+ * Clear the focus element.
+ *
+ * @see setFocusElement()
+ */
+ void clearFocusElement();
+
/**
* Enable rendering for the next frame
*
void update(double delta_time_sec);
- naRef addEventListener(const nasal::CallContext& ctx);
+ bool addEventListener(const std::string& type, const EventListener& cb);
+ bool dispatchEvent(const EventPtr& event);
void setSizeX(int sx);
void setSizeY(int sy);
SGRect<int> getViewport() const;
bool handleMouseEvent(const MouseEventPtr& event);
+ bool handleKeyboardEvent(const KeyboardEventPtr& event);
+
+ bool propagateEvent( EventPtr const& event,
+ EventPropagationPath const& path );
virtual void childAdded( SGPropertyNode * parent,
SGPropertyNode * child );
void reloadPlacements( const std::string& type = std::string() );
static void addPlacementFactory( const std::string& type,
PlacementFactory factory );
+ static void removePlacementFactory(const std::string& type);
+
+ /**
+ * Set global SystemAdapter for all Canvas/ODGauge instances.
+ *
+ * The SystemAdapter is responsible for application specific operations
+ * like loading images/fonts and adding/removing cameras to the scene
+ * graph.
+ */
+ static void setSystemAdapter(const SystemAdapterPtr& system_adapter);
+ static SystemAdapterPtr getSystemAdapter();
protected:
- SystemAdapterPtr _system_adapter;
CanvasMgr *_canvas_mgr;
- std::auto_ptr<EventManager> _event_manager;
+ boost::scoped_ptr<EventManager> _event_manager;
int _size_x,
_size_y,
_visible;
ODGauge _texture;
- GroupPtr _root_group;
+
+ GroupPtr _root_group;
+ LayoutRef _layout;
+
+ ElementWeakPtr _focus_element;
CullCallbackPtr _cull_callback;
- bool _render_always; //<! Used to disable automatic lazy rendering (culling)
+ bool _render_always; //!< Used to disable automatic lazy rendering (culling)
std::vector<SGPropertyNode*> _dirty_placements;
std::vector<Placements> _placements;
- std::set<CanvasWeakPtr> _parent_canvases, //<! Canvases showing this canvas
- _child_canvases; //<! Canvases displayed within
+ std::set<CanvasWeakPtr> _parent_canvases, //!< Canvases showing this canvas
+ _child_canvases; //!< Canvases displayed within
// this canvas
typedef std::map<std::string, PlacementFactory> PlacementFactoryMap;
static PlacementFactoryMap _placement_factories;
- virtual void setSelf(const PropertyBasedElementPtr& self);
void setStatusFlags(unsigned int flags, bool set = true);
private:
+ static SystemAdapterPtr _system_adapter;
+
Canvas(const Canvas&); // = delete;
Canvas& operator=(const Canvas&); // = delete;
};