GraphViewer

class GraphViewer : public SoXtPlaneViewer

A SoXtPlaneViewer showing an iconic version of an Inventor scene graph

Inheritance:

Public Methods
void addDeselectionCallback(SoSelectionPathCB *f, void *userData = NULL): represented by the deselected graph icon.
void addSelectionCallback(SoSelectionPathCB *f, void *userData = NULL): represented by the selected graph icon.
void deselectAll(): Deselects the current selection
SoNode* getDisplayGraph(): Returns the scene graph representing the display graph
virtual Widget getWidget(): Redefine this from the base class
GraphViewer(Widget parent = NULL, const char *name = NULL)
void removeDeselectionCallback(SoSelectionPathCB *f, void *userData = NULL)
void removeSelectionCallback(SoSelectionPathCB *f, void *userData = NULL)
void select(SoPath *path): anywhere in the path (i.e., there may be other nodes above it.
virtual void setSceneGraph(SoNode *newScene): the graph itself
void update(): graph. Sets up the array of GraphIcons.
~GraphViewer()

Private Fields
SoNode* bufferNode: Copied/cut node from scene graph
SoOrthographicCamera* camera: Camera used to view scene
SoCallbackList* deselCBs: Deselection callbacks
DisplayGraph* displayGraph: Display graph
SoGroup* displayRoot: Root of display graph
SoEventCallback* ecb: Handles all mouse/kbd events
SbBool isGrabbing: TRUE if currently grabbing events
SbBool pasteByRef: TRUE if paste is by reference as opposed to copying
SoCoordinate3* pasteCoord: Coordinates for paste feedback line
SoSwitch* pasteSwitch: Root of paste feedback subgraph
SoTransform* pasteXform: Transform node in paste feedback
GraphIcon* pickedIcon: Icon hit by last selection pick
SbTime prevTime: Time of prev mouse press (to detect double-click)
SoBoxHighlightRenderAction* rendAct: Render action with box highlighting
SoCallbackList* selCBs: Selection callbacks
GraphIcon* selectedIcon: Currently-selected icon
SoSelection* selector: Selection node
SoNode* userScene: Scene we are displaying
Widget widget: Top level widget

Private Methods
void buildGraph(DisplayGraph *oldDisplayGraph): Constructs a display graph from the current array of GraphIcons
Widget buildMenu(Widget parent): Builds the top-bar menu widget
SoPath* buildPathToIconNode(GraphIcon *tailIcon): Returns a path from the root of the user's scene graph down to the node represented by the given icon. The path is ref'ed.
Widget buildWidget(Widget parent): Builds all widgets
SbBool changeSelection(int code): Changes selection based on passed code: 0 = parent, 1 = first child, 2 = sibling to left, 3 = sibling to right. Nothing is done if the change is not valid. Returns update code.
void copy(): Copies current selection
static int countNodes(const SoNode *root, SbDict *nodeDict): Counts nodes in subgraph rooted by node
SoNode* createPasteFeedback(): Creates and returns subgraph used for selection pasting feedback
virtual void createViewerButtons(Widget parent): Redefine this to add only full viewer buttons (not the plane viewer stuff)
SbBool cut(SbBool saveSelection): Cuts/clears current selection
static void deselectionCB(void *data, SoPath *path): Callback to clear currently-selected icon and invoke callbacks
int getMousePressAction(SoEventCallback *ecb): Returns action to be initiated by mouse press
GraphIcon* getSelectedIcon(): Returns GraphIcon corresponding to current selected icon, or NULL
void invokeCallbacks(SbBool selecting): Invokes user-supplied selection or deselection callbacks
static void menuButtonCB(Widget, XtPointer, XtPointer)
static void menuDisplayCB(Widget, XtPointer, XtPointer): Callbacks for menu display and menu button press
static void mousePressCB(void *data, SoEventCallback *ecb): Callback for mouse button presses
void movePasteFeedback(const SoEvent *event, SbBool doPaste): Moves paste feedback to follow cursor, given event containing position
static void nodeCreationCB(void *data, SoNode *newNode): Callback for NodeCreator
void pasteBegin(SoEventCallback *ecb): Begins selection pasting
static void pasteEndCB(void *data, SoEventCallback *ecb)
static void pasteMoveCB(void *data, SoEventCallback *ecb): Callbacks for mouse motion and button presses during selection pasting
void processAction(int action, SoEventCallback *ecb): Processes action initiated by menu or key press
void resetPasteFeedback(): Resets paste feedback to initial state
void select(GraphIcon *icon): Changes selection to be given icon
static void selectionCB(void *data, SoPath *path): Callback to store currently-selected icon and invoke callbacks
static SoPath* selectionFilterCB(void *data, const SoPickedPoint *pick): Callback to prune a selected path that extends to a shape in an icon to end at the root of the icon