#include <SoQtViewerProxy.h>

Inheritance diagram for SoQtViewerProxy:

Public Member Functions
	SoQtViewerProxy (SoQtRenderArea *renderArea=nullptr)
	This class implements access to the state of the SoQtMeVis viewer.
	~SoQtViewerProxy () override
	Destructor.
void	setCursor (int shapeID) override
void	setForceCursor (int shapeID) override
int	getCursor ()
	Returns the requested cursor shape.
bool	hasShape (int shapeID) override
	Checks whether this shape has already been defined.
int	defineCursor (const char *cursorImgFileName, int hotSpotX=-1, int hotSpotY=-1, int id=-1) override
bool	getCurrentCursorPosition (int &x, int &y) override
bool	isInitialRendering () const override
	Returns `true` if the viewer does the initial rendering after it became visible.
bool	isUserInterationEventInQueue () const override
	Returns whether a user interaction event is the the GUI event queue.
double	getDevicePixelRatio () override
Public Member Functions inherited from SoViewerProxy
virtual	~SoViewerProxy ()
	Destructor.
virtual bool	isHighQualityOffscreenRendering () const
	Returns `true` if high quality offscreen rendering (e.g., for OffscreenRenderer) is desired.
virtual SoMetaInformationMap *	getMetaInformationMap ()

Static Public Member Functions
static bool	forceDefineCursor (int id, const char *cursorImgFileName, int hotSpotX=-1, int hotSpotY=-1)
	defineCursor simply calls this method, which will overwrite previous shapes.
static void	initializeDefaultCursors ()
static QCursor	getCursor (int shapeID)
	Returns the QCursor associated with the given `shapeID`.
static QPixmap	getPixmap (int shapeID)
	Returns the QPixmap associated with the given `shapeID` in 1x resolution.
static QPixmap	getPixmap2x (int shapeID)
	Returns the QPixmap associated with the given `shapeID` in 2x resolution.
static int	getShapeID (const QCursor &cursor)
static bool	isSameCursor (const QCursor &a, const QCursor &b)
	Compares cursor shapes.
Static Public Member Functions inherited from SoViewerProxy
static const char const	cursorShapeNames ()
static int	getPredefinedCursorCount ()
static const ml::EnumValues< cursorShapeEnum > &	getCursorShapeEnumValues ()
	Returns enum values record for use with ml::TypedEnumField.
static int	getNextFreeShapeID ()
	Returns the next free ID for defining custom cursor shape.

Protected Attributes
SoQtRenderArea *	_renderArea
	Pointer to the actual viewer.
int	_requestedShape
	Currently requested cursor shape.
bool	_cursorEnforced
	Cursor setting was enforced.
virtual void	resetCursor ()
	Resets the stored cursor shape. This must be called before event handling traversal.
virtual void	evaluateCursor ()
	Evaluates the set cursor shape. This must be called after event handling traversal.
virtual bool	actionMayChangeCursor (SoAction *action)
static void	resetCursorCB (void userData, SoAction action)
static void	evaluateCursorCB (void userData, SoAction action)

Additional Inherited Members
Public Types inherited from SoViewerProxy
enum	cursorShapeEnum { UNDEFINED_CURSOR = -1 , DEFAULT_CURSOR = 0 , FORBIDDEN_CURSOR , POINTING_HAND_CURSOR , OPEN_HAND_CURSOR , CLOSED_HAND_CURSOR , MOVE_ALL_CURSOR , MOVE_HORI_CURSOR , MOVE_VERT_CURSOR , MOVE_FDIAG_CURSOR , MOVE_BDIAG_CURSOR , MOVE_INOUT_CURSOR , ROTATE_X_CURSOR , ROTATE_Y_CURSOR , ROTATE_Z_CURSOR , ROTATE_XY_CURSOR , ZOOM_CURSOR , ZOOM_IN_CURSOR , ZOOM_OUT_CURSOR , CROSS_CURSOR , CROSS_PLUS_CURSOR , CROSS_MINUS_CURSOR , CROSS_MOVE_CURSOR , CROSS_ROTATE_CURSOR , CROSS_RECT_CURSOR , CROSS_OVAL_CURSOR , CROSS_VECTOR_CURSOR , CROSS_FREEFORM_CURSOR , CROSS_POINT_CURSOR , CROSS_LINE_CURSOR , CROSS_CURVE_CURSOR , CROSS_POLYLINE_CURSOR , CROSS_POLYGON_CURSOR , CROSS_FILL_CURSOR , CROSS_LINK_CURSOR , CROSS_0_CURSOR , CROSS_1_CURSOR , CROSS_2_CURSOR , CROSS_3_CURSOR , CROSS_4_CURSOR , CROSS_5_CURSOR , CROSS_6_CURSOR , CROSS_7_CURSOR , CROSS_8_CURSOR , CROSS_9_CURSOR , LUT_CURSOR , LUT_1_CURSOR , LUT_2_CURSOR , LUT_3_CURSOR , SLICING_CURSOR , BLANK_CURSOR , OTHER_CURSOR_0 , OTHER_CURSOR_1 , OTHER_CURSOR_2 , OTHER_CURSOR_3 , OTHER_CURSOR_4 , OTHER_CURSOR_5 , OTHER_CURSOR_6 , OTHER_CURSOR_7 , OTHER_CURSOR_8 , OTHER_CURSOR_9 , OTHER_CURSOR_10 , OTHER_CURSOR_11 , OTHER_CURSOR_12 , OTHER_CURSOR_13 , OTHER_CURSOR_14 , OTHER_CURSOR_15 , OTHER_CURSOR_16 , OTHER_CURSOR_17 , OTHER_CURSOR_18 , OTHER_CURSOR_19 , OTHER_CURSOR_20 , OTHER_CURSOR_21 , OTHER_CURSOR_22 , OTHER_CURSOR_23 , OTHER_CURSOR_24 , OTHER_CURSOR_25 , OTHER_CURSOR_26 , OTHER_CURSOR_27 , OTHER_CURSOR_28 , OTHER_CURSOR_29 , OTHER_CURSOR_30 , OTHER_CURSOR_31 , OTHER_CURSOR_32 , OTHER_CURSOR_33 , OTHER_CURSOR_34 , OTHER_CURSOR_35 , OTHER_CURSOR_36 , OTHER_CURSOR_37 , OTHER_CURSOR_38 , OTHER_CURSOR_39 , OTHER_CURSOR_40 , OTHER_CURSOR_41 , OTHER_CURSOR_42 , OTHER_CURSOR_43 , OTHER_CURSOR_44 , OTHER_CURSOR_45 , OTHER_CURSOR_46 , OTHER_CURSOR_47 , OTHER_CURSOR_48 , OTHER_CURSOR_49 , OTHER_CURSOR_50 , OTHER_CURSOR_51 , OTHER_CURSOR_52 , OTHER_CURSOR_53 , OTHER_CURSOR_54 , OTHER_CURSOR_55 , OTHER_CURSOR_56 , OTHER_CURSOR_57 , OTHER_CURSOR_58 , OTHER_CURSOR_59 , OTHER_CURSOR_60 , OTHER_CURSOR_61 , OTHER_CURSOR_62 , OTHER_CURSOR_63 , OTHER_CURSOR_64 , OTHER_CURSOR_65 , OTHER_CURSOR_66 , OTHER_CURSOR_67 , OTHER_CURSOR_68 , OTHER_CURSOR_69 , PREDEFINED_CURSOR_COUNT }
Protected Member Functions inherited from SoViewerProxy
	SoViewerProxy ()
	Protected constructor. Class must be derived to be adapted to actual viewer.

Detailed Description

Definition at line 28 of file SoQtViewerProxy.h.

Constructor & Destructor Documentation

◆ SoQtViewerProxy()

SoQtViewerProxy::SoQtViewerProxy ( SoQtRenderArea * renderArea = nullptr )

This class implements access to the state of the SoQtMeVis viewer.

Constructor.

◆ ~SoQtViewerProxy()

SoQtViewerProxy::~SoQtViewerProxy ( )

inlineoverride

Destructor.

Definition at line 64 of file SoQtViewerProxy.h.

Member Function Documentation

◆ actionMayChangeCursor()

virtual bool SoQtViewerProxy::actionMayChangeCursor ( SoAction * action )

virtual

Returns whether the given action may change the cursor. This is typically the case for SoHandleEvent actions with the exception of the artificial SoLocation2RefreshEvent event.

◆ defineCursor()

int SoQtViewerProxy::defineCursor	(	const char *	cursorImgFileName,
		int	hotSpotX = -1,
		int	hotSpotY = -1,
		int	id = -1 )

overridevirtual

Defines new cursor shape - successful operation is only guaranteed with PNG-Images with size 32x32, containing only black, white, and transparent pixels. If the operation failed, -1 is returned. If an ID id is set, you can change the cursor shape of an already existing cursor (the file name is cached per ID, so the actual operation is only performed on the first call).

Reimplemented from SoViewerProxy.

◆ evaluateCursor()

virtual void SoQtViewerProxy::evaluateCursor ( )

virtual

Evaluates the set cursor shape. This must be called after event handling traversal.

◆ evaluateCursorCB()

void SoQtViewerProxy::evaluateCursorCB	(	void *	userData,
		SoAction *	action )

static

This callback can be used together with a SoCallback node, userData must be set to the pointer to this (or a derived) proxy. This need to be called after before event traversal. It calls the virtual evaluateCursor() method, which should be overwritten in specialized proxies, e.g., for remote rendering.

◆ forceDefineCursor()

bool SoQtViewerProxy::forceDefineCursor	(	int	id,
		const char *	cursorImgFileName,
		int	hotSpotX = -1,
		int	hotSpotY = -1 )

static

defineCursor simply calls this method, which will overwrite previous shapes.

◆ getCurrentCursorPosition()

bool SoQtViewerProxy::getCurrentCursorPosition	(	int &	x,
		int &	y )

overridevirtual

Returns the current cursor position relative to the viewing window. Returns true if the position is inside of the viewing window.

Reimplemented from SoViewerProxy.

◆ getCursor() [1/2]

int SoQtViewerProxy::getCursor ( )

inline

Returns the requested cursor shape.

Definition at line 75 of file SoQtViewerProxy.h.

References _requestedShape.

◆ getCursor() [2/2]

QCursor SoQtViewerProxy::getCursor ( int shapeID )

static

Returns the QCursor associated with the given shapeID.

◆ getPixmap()

QPixmap SoQtViewerProxy::getPixmap ( int shapeID )

static

Returns the QPixmap associated with the given shapeID in 1x resolution.

◆ getPixmap2x()

QPixmap SoQtViewerProxy::getPixmap2x ( int shapeID )

static

Returns the QPixmap associated with the given shapeID in 2x resolution.

◆ getShapeID()

int SoQtViewerProxy::getShapeID ( const QCursor & cursor )

static

Returns the shape ID associated with the given cursor. It will return -1 if the cursor is not used for any shape ID. Note that if different shape IDs use the same cursor, the lowest shape ID will be returned.

◆ hasShape()

bool SoQtViewerProxy::hasShape ( int shapeID )

overridevirtual

Checks whether this shape has already been defined.

Reimplemented from SoViewerProxy.

◆ initializeDefaultCursors()

void SoQtViewerProxy::initializeDefaultCursors ( )

static

On some platforms, it may not be possible to initialize the default cursors at any time, so one may have to call this in advance.

◆ isInitialRendering()

bool SoQtViewerProxy::isInitialRendering ( ) const

overridevirtual

Returns true if the viewer does the initial rendering after it became visible.

Reimplemented from SoViewerProxy.

◆ isSameCursor()

bool SoQtViewerProxy::isSameCursor	(	const QCursor &	a,
		const QCursor &	b )

static

Compares cursor shapes.

◆ isUserInterationEventInQueue()

bool SoQtViewerProxy::isUserInterationEventInQueue ( ) const

overridevirtual

Returns whether a user interaction event is the the GUI event queue.

Reimplemented from SoViewerProxy.

◆ resetCursor()

virtual void SoQtViewerProxy::resetCursor ( )

virtual

Resets the stored cursor shape. This must be called before event handling traversal.

The methods resetCursor and evaluateCursor must be called before and after traversal of the scene graph: The underlying idea is to only set the cursor if it has been set during event traversal, and only to the last shape (if it has been set more than once). This way, the cursor change can only be executed after the traversal and must be prepared by resetting the cursor shape before the traversal.

◆ resetCursorCB()

void SoQtViewerProxy::resetCursorCB	(	void *	userData,
		SoAction *	action )

static

This callback can be used together with a SoCallback node, userData must be set to the pointer to this (or a derived) proxy. This need to be called before event traversal.

◆ setCursor()

void SoQtViewerProxy::setCursor ( int shapeID )

overridevirtual

Sets the cursor of the viewer to pre- or user-defined shape. Invalid positive values will set cursor to default shape, negative values will do nothing.

Reimplemented from SoViewerProxy.

◆ setForceCursor()

void SoQtViewerProxy::setForceCursor ( int shapeID )

overridevirtual

Enforces the setting the cursor, even from mouseOverUpdates. This may lead to cursor flickering. You should probably not use this function!

Reimplemented from SoViewerProxy.

Member Data Documentation

◆ _cursorEnforced

bool SoQtViewerProxy::_cursorEnforced

protected

Cursor setting was enforced.

Definition at line 166 of file SoQtViewerProxy.h.

◆ _renderArea

SoQtRenderArea* SoQtViewerProxy::_renderArea

protected

Pointer to the actual viewer.

Definition at line 160 of file SoQtViewerProxy.h.

◆ _requestedShape

int SoQtViewerProxy::_requestedShape

protected

Currently requested cursor shape.

Definition at line 163 of file SoQtViewerProxy.h.

Referenced by getCursor().

The documentation for this class was generated from the following file:

MeVis/Foundation/Sources/MLInventorGUIBinding/SoQtViewerProxy.h

Public Member Functions

Static Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SoQtViewerProxy()

◆ ~SoQtViewerProxy()

Member Function Documentation

◆ actionMayChangeCursor()

◆ defineCursor()

◆ evaluateCursor()

◆ evaluateCursorCB()

◆ forceDefineCursor()

◆ getCurrentCursorPosition()

◆ getCursor() [1/2]

◆ getCursor() [2/2]

◆ getPixmap()

◆ getPixmap2x()

◆ getShapeID()

◆ hasShape()

◆ initializeDefaultCursors()

◆ isInitialRendering()

◆ isSameCursor()

◆ isUserInterationEventInQueue()

◆ resetCursor()

◆ resetCursorCB()

◆ setCursor()

◆ setForceCursor()

Member Data Documentation

◆ _cursorEnforced

◆ _renderArea

◆ _requestedShape