Q3DGraphsWidgetItem Class

The Q3DGraphsWidgetItem class provides a window and render loop for graphs. More...

Header: #include <Q3DGraphsWidgetItem>
CMake: find_package(Qt6 REQUIRED COMPONENTS Graphs)
target_link_libraries(mytarget PRIVATE Qt6::Graphs)
qmake: QT += graphs
Inherits: QObject
Inherited By:

Q3DBarsWidgetItem, Q3DScatterWidgetItem, and Q3DSurfaceWidgetItem

Properties

Public Functions

virtual ~Q3DGraphsWidgetItem() override
QGraphsTheme *activeTheme() const
qsizetype addCustomItem(QCustom3DItem *item)
void addTheme(QGraphsTheme *theme)
float ambientLightStrength() const
qreal aspectRatio() const
QtGraphs3D::CameraPreset cameraPreset() const
QVector3D cameraTargetPosition()
float cameraXRotation()
float cameraYRotation()
float cameraZoomLevel()
void clearSelection()
int currentFps() const
QList<QCustom3DItem *> customItems() const
QtGraphs3D::GridLineType gridLineType() const
bool hasSeries(QAbstract3DSeries *series) const
qreal horizontalAspectRatio() const
bool isOrthoProjection() const
bool isPolar() const
bool isRotationEnabled()
bool isSelectionEnabled()
bool isZoomAtTargetEnabled()
bool isZoomEnabled()
float labelMargin() const
QColor lightColor() const
float lightStrength() const
QLocale locale() const
qreal margin() const
float maxCameraXRotation()
float maxCameraYRotation()
float maxCameraZoomLevel()
bool measureFps() const
float minCameraXRotation()
float minCameraYRotation()
float minCameraZoomLevel()
int msaaSamples() const
QtGraphs3D::OptimizationHint optimizationHint() const
QVector3D queriedGraphPosition() const
float radialLabelOffset() const
void releaseCustomItem(QCustom3DItem *item)
void releaseTheme(QGraphsTheme *theme)
void removeCustomItem(QCustom3DItem *item)
void removeCustomItemAt(const QVector3D &position)
void removeCustomItems()
QSharedPointer<QQuickItemGrabResult> renderToImage(const QSize &imageSize = QSize())
Q3DScene *scene() const
QAbstract3DAxis *selectedAxis() const
QCustom3DItem *selectedCustomItem() const
qsizetype selectedCustomItemIndex() const
QtGraphs3D::ElementType selectedElement() const
int selectedLabelIndex() const
QtGraphs3D::SelectionFlags selectionMode() const
void setActiveTheme(QGraphsTheme *activeTheme)
void setAmbientLightStrength(float newAmbientLightStrength)
void setAspectRatio(qreal ratio)
void setCameraPosition(float horizontal, float vertical, float zoom = 100.0f)
void setCameraPreset(QtGraphs3D::CameraPreset preset)
void setCameraTargetPosition(const QVector3D &target)
void setCameraXRotation(float rotation)
void setCameraYRotation(float rotation)
void setCameraZoomLevel(float level)
void setGridLineType(const QtGraphs3D::GridLineType &gridLineType)
void setHorizontalAspectRatio(qreal ratio)
void setLabelMargin(float margin)
void setLightColor(const QColor &newLightColor)
void setLightStrength(float newLightStrength)
void setLocale(const QLocale &locale)
void setMargin(qreal margin)
void setMaxCameraXRotation(float rotation)
void setMaxCameraYRotation(float rotation)
void setMaxCameraZoomLevel(float level)
void setMeasureFps(bool enable)
void setMinCameraXRotation(float rotation)
void setMinCameraYRotation(float rotation)
void setMinCameraZoomLevel(float level)
void setMsaaSamples(int samples)
void setOptimizationHint(QtGraphs3D::OptimizationHint hint)
void setOrthoProjection(bool enable)
void setPolar(bool enable)
void setRadialLabelOffset(float offset)
void setRotationEnabled(bool enable)
void setSelectionEnabled(bool enable)
void setSelectionMode(const QtGraphs3D::SelectionFlags &selectionMode)
void setShadowQuality(const QtGraphs3D::ShadowQuality &shadowQuality)
void setShadowStrength(float newShadowStrength)
void setWrapCameraXRotation(bool wrap)
void setWrapCameraYRotation(bool wrap)
void setZoomAtTargetEnabled(bool enable)
void setZoomEnabled(bool enable)
QtGraphs3D::ShadowQuality shadowQuality() const
float shadowStrength() const
QList<QGraphsTheme *> themes() const
bool wrapCameraXRotation()
bool wrapCameraYRotation()

Signals

void activeThemeChanged(QGraphsTheme *activeTheme)
void ambientLightStrengthChanged()
void aspectRatioChanged(qreal ratio)
void cameraPresetChanged(QtGraphs3D::CameraPreset preset)
void cameraTargetPositionChanged(const QVector3D &target)
void cameraXRotationChanged(float rotation)
void cameraYRotationChanged(float rotation)
void cameraZoomLevelChanged(float zoomLevel)
void currentFpsChanged(int fps)
void gridLineTypeChanged()
void horizontalAspectRatioChanged(qreal ratio)
void labelMarginChanged(float margin)
void lightColorChanged()
void lightStrengthChanged()
void localeChanged(const QLocale &locale)
void marginChanged(qreal margin)
void maxCameraXRotationChanged(float rotation)
void maxCameraYRotationChanged(float rotation)
void maxCameraZoomLevelChanged(float zoomLevel)
void measureFpsChanged(bool enabled)
void minCameraXRotationChanged(float rotation)
void minCameraYRotationChanged(float rotation)
void minCameraZoomLevelChanged(float zoomLevel)
void msaaSamplesChanged(int samples)
void optimizationHintChanged(QtGraphs3D::OptimizationHint hint)
void orthoProjectionChanged(bool enabled)
void polarChanged(bool enabled)
void queriedGraphPositionChanged(const QVector3D &data)
void radialLabelOffsetChanged(float offset)
void rotationEnabledChanged(bool enable)
void selectedElementChanged(QtGraphs3D::ElementType type)
void selectionEnabledChanged(bool enable)
void selectionModeChanged(const QtGraphs3D::SelectionFlags selectionMode)
void shadowQualityChanged(QtGraphs3D::ShadowQuality quality)
void shadowStrengthChanged()
void wrapCameraXRotationChanged(bool wrap)
void wrapCameraYRotationChanged(bool wrap)
void zoomAtTargetEnabledChanged(bool enable)
void zoomEnabledChanged(bool enable)

Detailed Description

This class subclasses a QWindow and provides render loop for graphs inheriting it.

You should not need to use this class directly, but one of its subclasses instead.

Anti-aliasing is turned on by default on C++, except in OpenGL ES2 environments, where anti-aliasing is not supported by Qt Graphs. To specify non-default anti-aliasing for a graph, give a custom surface format as a constructor parameter. You can use the convenience function qDefaultSurfaceFormat() to create the surface format object.

Note: Q3DGraphsWidgetItem sets window flag Qt::FramelessWindowHint on by default. If you want to display graph windows as standalone windows with regular window frame, clear this flag after constructing the graph. For example:

Q3DBarsWidgetItem *graphWindow = new Q3DBarsWidgetItem;
graphWindow->setFlags(graphWindow->flags() ^ Qt::FramelessWindowHint);

See also Q3DBarsWidgetItem, Q3DScatterWidgetItem, Q3DSurfaceWidgetItem, and Qt Graphs C++ Classes for 3D.

Property Documentation

activeTheme : QGraphsTheme*

This property holds the active theme of the graph.

Sets activeTheme as the active theme to be used for the graph. Implicitly calls addTheme() to transfer the ownership of the theme to this graph.

If activeTheme is null, a temporary default theme is created. This temporary theme is destroyed if any theme is explicitly set later. Properties of the theme can be modified even after setting it, and the modifications take effect immediately.

Access functions:

QGraphsTheme *activeTheme() const
void setActiveTheme(QGraphsTheme *activeTheme)

Notifier signal:

void activeThemeChanged(QGraphsTheme *activeTheme)

ambientLightStrength : float

This property holds the ambient light strength for the whole graph.

This value determines how evenly and brightly the colors are shown throughout the graph regardless of the light position.

The value must be between 0.0f and 1.0f.

Access functions:

float ambientLightStrength() const
void setAmbientLightStrength(float newAmbientLightStrength)

Notifier signal:

void ambientLightStrengthChanged()

aspectRatio : qreal

This property holds the ratio of the graph scaling between the longest axis on the horizontal plane and the y-axis.

Defaults to 2.0.

Note: Has no effect on Q3DBarsWidgetItem.

Access functions:

qreal aspectRatio() const
void setAspectRatio(qreal ratio)

Notifier signal:

void aspectRatioChanged(qreal ratio)

See also horizontalAspectRatio.

cameraTargetPosition : QVector3D

This property holds the camera target position as a vector or vertex in the 3D space.

Defaults to QVector3D(0.0, 0.0, 0.0).

Valid coordinate values are between -1.0...1.0, where the edge values indicate the edges of the corresponding axis range. Any values outside this range are clamped to the edge.

Note: For bar graphs, the Y-coordinate is ignored and camera always targets a point on the horizontal background.

Access functions:

QVector3D cameraTargetPosition()
void setCameraTargetPosition(const QVector3D &target)

Notifier signal:

void cameraTargetPositionChanged(const QVector3D &target)

cameraXRotation : float

This property holds the X-rotation angle of the camera around the target point in degrees.

Access functions:

float cameraXRotation()
void setCameraXRotation(float rotation)

Notifier signal:

void cameraXRotationChanged(float rotation)

cameraYRotation : float

This property holds the Y-rotation angle of the camera around the target point in degrees.

Access functions:

float cameraYRotation()
void setCameraYRotation(float rotation)

Notifier signal:

void cameraYRotationChanged(float rotation)

cameraZoomLevel : float

This property holds the camera zoom level in percentage.

The default value of 100.0f means there is no zoom in or out set in the camera. The value is limited by the minCameraZoomLevel and maxCameraZoomLevel properties.

Access functions:

float cameraZoomLevel()
void setCameraZoomLevel(float level)

Notifier signal:

void cameraZoomLevelChanged(float zoomLevel)

See also minCameraZoomLevel and maxCameraZoomLevel.

[read-only] currentFps : const int

This property holds the rendering results for the last second.

The results are stored in this read-only property when FPS measuring is enabled. It takes at least a second before this value is updated after measuring is activated.

Access functions:

int currentFps() const

Notifier signal:

void currentFpsChanged(int fps)

See also measureFps.

gridLineType : QtGraphs3D::GridLineType

This property holds whether the grid lines type is Q3DGraphsWidgetItem::GridLineType::Shader or Q3DGraphsWidgetItem::GridLineType::Geometry.

This value affects all grid lines.

Access functions:

QtGraphs3D::GridLineType gridLineType() const
void setGridLineType(const QtGraphs3D::GridLineType &gridLineType)

Notifier signal:

void gridLineTypeChanged()

horizontalAspectRatio : qreal

This property holds the ratio of the graph scaling between the x-axis and z-axis.

The value of 0.0 indicates automatic scaling according to axis ranges. Defaults to 0.0.

Has no effect on Q3DBarsWidgetItem, which handles scaling on the horizontal plane via the barThickness and barSpacing properties. Polar graphs also ignore this property.

Access functions:

qreal horizontalAspectRatio() const
void setHorizontalAspectRatio(qreal ratio)

Notifier signal:

void horizontalAspectRatioChanged(qreal ratio)

See also aspectRatio, polar, Q3DBarsWidgetItem::barThickness, and Q3DBarsWidgetItem::barSpacing.

labelMargin : float

This property specifies the margin for the placement of the axis labels.

Negative values place the labels inside the plot-area while positive values place them outside the plot-area. Label automatic rotation is disabled when the value is negative. Defaults to 0.1

Access functions:

float labelMargin() const
void setLabelMargin(float margin)

Notifier signal:

void labelMarginChanged(float margin)

See also QAbstract3DAxis::labelAutoRotation.

lightColor : QColor

This property holds the color for the ambient and specular light.

This value affects the light specified in Q3DScene.

Access functions:

QColor lightColor() const
void setLightColor(const QColor &newLightColor)

Notifier signal:

void lightColorChanged()

lightStrength : float

This property holds the specular light strength for the whole graph.

The value must be between 0.0f and 10.0f.

This value affects the light specified in Q3DScene.

Access functions:

float lightStrength() const
void setLightStrength(float newLightStrength)

Notifier signal:

void lightStrengthChanged()

locale : QLocale

This property holds the locale used for formatting various numeric labels.

Defaults to the "C" locale.

Access functions:

QLocale locale() const
void setLocale(const QLocale &locale)

Notifier signal:

void localeChanged(const QLocale &locale)

See also QValue3DAxis::labelFormat.

margin : qreal

This property holds the absolute value used for the space left between the edge of the plottable graph area and the edge of the graph background.

If the margin value is negative, the margins are determined automatically and can vary according to the size of the items in the series and the type of the graph. The value is interpreted as a fraction of the y-axis range if the graph aspect ratios have not beed changed from the default values. Defaults to -1.0.

Note: Setting a smaller margin for a scatter graph than the automatically determined margin can cause the scatter items at the edges of the graph to overlap with the graph background.

Note: On scatter and surface graphs, if the margin is small in comparison to the axis label size, the positions of the edge labels of the axes are adjusted to avoid overlap with the edge labels of the neighboring axes.

Access functions:

qreal margin() const
void setMargin(qreal margin)

Notifier signal:

void marginChanged(qreal margin)

maxCameraXRotation : float

This property holds the maximum X-rotation angle of the camera around the target point in degrees.

Access functions:

float maxCameraXRotation()
void setMaxCameraXRotation(float rotation)

Notifier signal:

void maxCameraXRotationChanged(float rotation)

maxCameraYRotation : float

This property holds the maximum Y-rotation angle of the camera around the target point in degrees.

Access functions:

float maxCameraYRotation()
void setMaxCameraYRotation(float rotation)

Notifier signal:

void maxCameraYRotationChanged(float rotation)

maxCameraZoomLevel : float

This property holds the maximum allowed camera zoom level.

If the maximum level is set to a new value that is lower than the existing minimum level, the minimum level is adjusted to the new maximum as well. If the current cameraZoomLevel is outside the new bounds, it is adjusted as well. Defaults to 500.0f.

Access functions:

float maxCameraZoomLevel()
void setMaxCameraZoomLevel(float level)

Notifier signal:

void maxCameraZoomLevelChanged(float zoomLevel)

See also cameraZoomLevel and minCameraZoomLevel.

measureFps : bool

This property holds whether rendering is done continuously instead of on demand.

If true, rendering is continuous and the value of the currentFps property is updated. Defaults to false.

Access functions:

bool measureFps() const
void setMeasureFps(bool enable)

Notifier signal:

void measureFpsChanged(bool enabled)

See also currentFps.

minCameraXRotation : float

This property holds the minimum X-rotation angle of the camera around the target point in degrees.

Access functions:

float minCameraXRotation()
void setMinCameraXRotation(float rotation)

Notifier signal:

void minCameraXRotationChanged(float rotation)

minCameraYRotation : float

This property holds the minimum Y-rotation angle of the camera around the target point in degrees.

Access functions:

float minCameraYRotation()
void setMinCameraYRotation(float rotation)

Notifier signal:

void minCameraYRotationChanged(float rotation)

minCameraZoomLevel : float

This property holds the minimum allowed camera zoom level.

If the minimum level is set to a new value that is higher than the existing maximum level, the maximum level is adjusted to the new minimum as well. If the current zoomLevel is outside the new bounds, it is adjusted as well. The minCameraZoomLevel cannot be set below 1.0f. Defaults to 10.0f.

Access functions:

float minCameraZoomLevel()
void setMinCameraZoomLevel(float level)

Notifier signal:

void minCameraZoomLevelChanged(float zoomLevel)

See also cameraZoomLevel and maxCameraZoomLevel.

msaaSamples : int

This property holds the number of used samples in MSAA.

Sets the number of used MSAA samples to samples. The number of samples can be either 0, 2, 4, or 8.

Access functions:

int msaaSamples() const
void setMsaaSamples(int samples)

Notifier signal:

void msaaSamplesChanged(int samples)

optimizationHint : QtGraphs3D::OptimizationHint

This property holds whether the default, static, or legacy mode is used for rendering optimization.

The default mode uses instanced rendering, and provides the full feature set at the best level of performance on most systems. The static mode optimizes graph rendering and is ideal for large non-changing data sets. It is slower with dynamic data changes and item rotations. Selection is not optimized, so using the static mode with massive data sets is not advisable. Static optimization works only on scatter graphs. Legacy mode renders all items in th graph individually, without instancing. It should be used only if default mode does not work, i.e. if the target system does not support instancing. Defaults to QtGraphs3D::OptimizationHint::Default.

Note: On some environments, large graphs using static optimization may not render, because all of the items are rendered using a single draw call, and different graphics drivers support different maximum vertice counts per call. This is mostly an issue on 32bit and OpenGL ES2 platforms. To work around this issue, choose an item mesh with a low vertex count or use the point mesh.

Access functions:

QtGraphs3D::OptimizationHint optimizationHint() const
void setOptimizationHint(QtGraphs3D::OptimizationHint hint)

Notifier signal:

void optimizationHintChanged(QtGraphs3D::OptimizationHint hint)

See also QAbstract3DSeries::mesh.

orthoProjection : bool

This property holds whether orthographic projection is used for displaying the graph.

Defaults to false.

Note: Shadows will be disabled when set to true.

Access functions:

bool isOrthoProjection() const
void setOrthoProjection(bool enable)

Notifier signal:

void orthoProjectionChanged(bool enabled)

See also QAbstract3DAxis::labelAutoRotation.

polar : bool

This property holds whether horizontal axes are changed into polar axes.

If true, the x-axis becomes the angular axis and the z-axis becomes the radial axis. Polar mode is not available for bar graphs.

Defaults to false.

Access functions:

bool isPolar() const
void setPolar(bool enable)

Notifier signal:

void polarChanged(bool enabled)

See also orthoProjection and radialLabelOffset.

[read-only] queriedGraphPosition : const QVector3D

This property holds the latest queried graph position values along each axis.

This read-only property contains the results from Q3DScene::graphPositionQuery. The values are normalized to the range [-1, 1]. If the queried position was outside the graph bounds, the values will not reflect the real position, but will instead indicate an undefined position outside the range [-1, 1]. The value will be undefined until a query is made.

There is no single correct 3D coordinate to match a particular screen position, so to be consistent, the queries are always done against the inner sides of an invisible box surrounding the graph.

Note: Bar graphs only allow querying graph position at the graph floor level, so the y-value is always zero for bar graphs and the valid queries can be only made at screen positions that contain the floor of the graph.

Access functions:

QVector3D queriedGraphPosition() const

Notifier signal:

void queriedGraphPositionChanged(const QVector3D &data)

See also Q3DScene::graphPositionQuery.

radialLabelOffset : float

This property holds the normalized horizontal offset for the axis labels of the radial polar axis.

The value 0.0 indicates that the labels should be drawn next to the 0-angle angular axis grid line. The value 1.0 indicates that the labels are drawn in their usual place at the edge of the graph background. Defaults to 1.0.

This property is ignored if the polar property value is false.

Access functions:

float radialLabelOffset() const
void setRadialLabelOffset(float offset)

Notifier signal:

void radialLabelOffsetChanged(float offset)

See also polar.

rotationEnabled : bool

This property holds whether this input handler allows graph rotation.

Defaults to true.

Access functions:

bool isRotationEnabled()
void setRotationEnabled(bool enable)

Notifier signal:

void rotationEnabledChanged(bool enable)

[read-only] scene : Q3DScene* const

This property holds the Q3DScene pointer that can be used to manipulate the scene and access the scene elements.

This property is read-only.

Access functions:

Q3DScene *scene() const

[read-only] selectedElement : const QtGraphs3D::ElementType

This property holds the element selected in the graph.

This property can be used to query the selected element type. The type is valid until a new selection is made in the graph and the selectedElementChanged signal is emitted.

The signal can be used for example for implementing custom input handlers, as demonstrated in the Graph Gallery example under Scatter Graph tab.

Access functions:

QtGraphs3D::ElementType selectedElement() const

Notifier signal:

void selectedElementChanged(QtGraphs3D::ElementType type)

See also selectedLabelIndex(), selectedAxis(), selectedCustomItemIndex(), selectedCustomItem(), Q3DBarsWidgetItem::selectedSeries(), Q3DScatterWidgetItem::selectedSeries(), Q3DSurfaceWidgetItem::selectedSeries(), and Q3DScene::setSelectionQueryPosition().

selectionEnabled : bool

This property holds whether this input handler allows selection from the graph.

Defaults to true.

Access functions:

bool isSelectionEnabled()
void setSelectionEnabled(bool enable)

Notifier signal:

void selectionEnabledChanged(bool enable)

selectionMode : QtGraphs3D::SelectionFlags

Item selection mode.

A combination of SelectionFlags. By default, Item. Different graph types support different selection modes.

Access functions:

QtGraphs3D::SelectionFlags selectionMode() const
void setSelectionMode(const QtGraphs3D::SelectionFlags &selectionMode)

Notifier signal:

void selectionModeChanged(const QtGraphs3D::SelectionFlags selectionMode)

See also QtGraphs3D::SelectionFlags.

shadowQuality : QtGraphs3D::ShadowQuality

This property holds the quality of the shadow.

One of the ShadowQuality enum values. By default, Medium.

Note: If setting the shadow quality to a certain level fails, the level is lowered until it is successfully set. The shadowQualityChanged signal is emitted each time a change is made.

Access functions:

QtGraphs3D::ShadowQuality shadowQuality() const
void setShadowQuality(const QtGraphs3D::ShadowQuality &shadowQuality)

Notifier signal:

void shadowQualityChanged(QtGraphs3D::ShadowQuality quality)

See also QtGraphs3D::ShadowQuality.

shadowStrength : float

This property holds the shadow strength for the whole graph.

The higher the number, the darker the shadows will be. The value must be between 0.0 and 100.0.

This value affects the light specified in Q3DScene.

Access functions:

float shadowStrength() const
void setShadowStrength(float newShadowStrength)

Notifier signal:

void shadowStrengthChanged()

wrapCameraXRotation : bool

This property holds the behavior of the minimum and maximum limits in the X-rotation.

If set to true, the X-rotation of the camera is wrapped from minimum to maximum and from maximum to minimum. If set to false, the X-rotation of the camera is limited to the sector determined by the minimum and maximum values. Set to true by default.

Access functions:

bool wrapCameraXRotation()
void setWrapCameraXRotation(bool wrap)

Notifier signal:

void wrapCameraXRotationChanged(bool wrap)

wrapCameraYRotation : bool

This property holds the behavior of the minimum and maximum limits in the Y-rotation.

If true, the Y-rotation of the camera is wrapped from minimum to maximum and from maximum to minimum. If false, the Y-rotation of the camera is limited to the sector determined by the minimum and maximum values. Set to true by default.

Access functions:

bool wrapCameraYRotation()
void setWrapCameraYRotation(bool wrap)

Notifier signal:

void wrapCameraYRotationChanged(bool wrap)

zoomAtTargetEnabled : bool

This property holds whether zooming should change the camera target so that the zoomed point of the graph stays at the same location after the zoom.

Defaults to true.

Access functions:

bool isZoomAtTargetEnabled()
void setZoomAtTargetEnabled(bool enable)

Notifier signal:

void zoomAtTargetEnabledChanged(bool enable)

zoomEnabled : bool

This property holds whether this input handler allows graph zooming.

Defaults to true.

Access functions:

bool isZoomEnabled()
void setZoomEnabled(bool enable)

Notifier signal:

void zoomEnabledChanged(bool enable)

Member Function Documentation

[override virtual noexcept] Q3DGraphsWidgetItem::~Q3DGraphsWidgetItem()

Destroys Q3DGraphsWidgetItem.

qsizetype Q3DGraphsWidgetItem::addCustomItem(QCustom3DItem *item)

Adds a QCustom3DItem item to the graph. Graph takes ownership of the added item.

Returns the index to the added item if the add operation was successful, -1 if trying to add a null item, and the index of the item if trying to add an already added item.

Items are rendered in the order they have been inserted. The rendering order needs to be taken into account when having solid and transparent items.

See also removeCustomItems(), removeCustomItem(), removeCustomItemAt(), and customItems().

void Q3DGraphsWidgetItem::addTheme(QGraphsTheme *theme)

Adds the given theme to the graph. The themes added via addTheme are not taken in to use directly. Only the ownership of the theme is given to the graph. The theme must not be null or already added to another graph.

See also releaseTheme() and setActiveTheme().

void Q3DGraphsWidgetItem::clearSelection()

Clears selection from all attached series.

QList<QCustom3DItem *> Q3DGraphsWidgetItem::customItems() const

Returns the list of all added custom items.

See also addCustomItem().

bool Q3DGraphsWidgetItem::hasSeries(QAbstract3DSeries *series) const

Returns whether the series has already been added to the graph.

void Q3DGraphsWidgetItem::releaseCustomItem(QCustom3DItem *item)

Gets ownership of given item back and removes the item from the graph.

Note: If the same item is added back to the graph, the texture or the texture file needs to be re-set.

See also QCustom3DItem::setTextureImage() and QCustom3DItem::setTextureFile().

void Q3DGraphsWidgetItem::releaseTheme(QGraphsTheme *theme)

Releases the ownership of the theme back to the caller, if it was added to this graph. If the released theme is in use, a new default theme will be created and set active.

If the default theme is released and added back later, it behaves as any other theme would.

See also addTheme() and setActiveTheme().

void Q3DGraphsWidgetItem::removeCustomItem(QCustom3DItem *item)

Removes the custom item. Deletes the resources allocated to it.

void Q3DGraphsWidgetItem::removeCustomItemAt(const QVector3D &position)

Removes all custom items at position. Deletes the resources allocated to them.

void Q3DGraphsWidgetItem::removeCustomItems()

Removes all custom items. Deletes the resources allocated to them.

QSharedPointer<QQuickItemGrabResult> Q3DGraphsWidgetItem::renderToImage(const QSize &imageSize = QSize())

Renders current frame to an image of imageSize. Returns a shared pointer to grab resut which can be used to access the rendered image when it's ready. Image is rendered with the current antialiasing settings.

Note: OpenGL ES2 does not support anitialiasing.

See also QQuickItem::grabToImage.

QAbstract3DAxis *Q3DGraphsWidgetItem::selectedAxis() const

Can be used to get the selected axis after receiving selectedElementChanged signal with any label type. Selection is valid until the next selectedElementChanged signal.

Returns the pointer to the selected axis, or null.

See also selectedElement.

QCustom3DItem *Q3DGraphsWidgetItem::selectedCustomItem() const

Can be used to get the selected custom item after receiving selectedElementChanged signal with Q3DGraphsWidgetItem::ElementType::CustomItem type. Ownership of the item remains with the graph. Selection is valid until the next selectedElementChanged signal.

Returns the pointer to the selected custom item, or null.

See also selectedElement.

qsizetype Q3DGraphsWidgetItem::selectedCustomItemIndex() const

Can be used to query the index of the selected custom item after receiving selectedElementChanged signal with Q3DGraphsWidgetItem::ElementType::CustomItem type. Selection is valid until the next selectedElementChanged signal.

Returns the index of the selected custom item, or -1.

See also selectedElement.

int Q3DGraphsWidgetItem::selectedLabelIndex() const

Can be used to query the index of the selected label after receiving selectedElementChanged signal with any label type. Selection is valid until the next selectedElementChanged signal.

Returns the index of the selected label, or -1.

See also selectedElement.

void Q3DGraphsWidgetItem::setCameraPosition(float horizontal, float vertical, float zoom = 100.0f)

Utility function that sets the camera rotations and distance.horizontal and vertical define the camera rotations to be used. Optional zoom parameter can be given to set the zoom percentage of the camera within the bounds defined by minCameraZoomLevel and maxCameraZoomLevel properties.

QList<QGraphsTheme *> Q3DGraphsWidgetItem::themes() const

Returns the list of all added themes.

See also addTheme().

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