Namespace for user interface components. More...

Namespaces
namespace	Quick
	Namespace for QML related classes.

Classes
class	ImageScene
	Scene to provide a convenient display for an image. More...

class	ImageView
	View to display an image. More...

class	OpenGLBufferFormat
	Buffer format description for a texture to hold the pixel data. More...

class	OpenGLCoord
	OpenGL coordinate representing a texture corner. More...

class	OpenGLCoordArray
	Set of all coordinates required to render a texture. More...

class	OpenGLImageRenderer
	Base class for OpenGL image renderer. More...

class	OpenGLImageRendererFactory
	Factory to create an OpenGL based image renderer. More...

class	PropertyGrid
	View to display a device's nodemap. More...

class	ZoomDescriptor
	Describes an zoom setting for the display. More...

Enumerations
enum class	UploadMode { Image , Viewport }
	Defines the upload behavior. More...

enum class	ZoomID { Invalid , Custom , Panorama , Factor1 , Factor2 , Factor4 , Factor8 , Factor16 , Factor32 , Factor64 , Factor128 }
	Identifier for a zoom factor. More...

enum class	AutoRefresh { On , Off }
	Allows to automatically refresh, if image content changes. More...

enum class	LabelScale
	Switch defining if image view labels are sensitive to zoom operations.

enum class	RefreshMode { UploadOnly , UploadAndScheduleRepaint , UploadAndWaitForRepaint }
	Defines the refresh behavior. More...

enum class	RenderEngine { Raster , OpenGL2 , OpenGL3 }
	Defines the render engine used for drawing. More...

enum class	OpenGLTextureFormat { Unknown , RGB , Mono }
	OpenGL texture format to hold the pixel data. More...

Functions
Cvb::String	QtToCvb (const QString text) noexcept
	Convenience converter for strings.

QString	CvbToQt (const Cvb::String &text) noexcept
	Convenience converter for strings.

QSizeF	CvbToQt (Size2D< double > size) noexcept
	Convenience converter for sizes.

Size2D< double >	QtToCvb (QSizeF size) noexcept
	Convenience converter for sizes.

QRectF	CvbToQt (RectLT< double > rect) noexcept
	Convenience converter for rectangles.

RectLT< double >	QtToCvb (const QRectF &rect) noexcept
	Convenience converter for rectangles.

QPointF	CvbToQt (Point2D< double > point) noexcept
	Convenience converter for points.

Point2D< double >	QtToCvb (const QPointF &point)
	Convenience converter for points.

QString	CvbQtPluginPath ()
	Directory to Qt plugins installed with CVB.

QString	CvbQtQmlPath ()
	Directory to Qt qml installed with CVB.

Detailed Description

Namespace for user interface components.

All components within this namespace depend on the Qt5 library. You may seamlessly integrate with your Qt Widget based application and link to your own version of Qt.

Note: None of the classes in this namespace defines the Q_OBJECT macro, so they are independent of Qt's meta-object compiler (moc).

Online Manual: Image Display in C++ Using Qt/QML

Examples: QmlImageDisplay
QmlStreamDisplay
QtImageDisplay
QtDisplayAdvanced
QtPropertyGrid
QtStatisticsDisplay
QtStreamDisplay
QtStreamDisplayPair

Remarks: CMake users: Link to imported target CVB::CvbUI
Use with COMPONENTS PropertyGrid and/or CvbQuick if required.

Enumeration Type Documentation

◆ AutoRefresh

enum class AutoRefresh

strong

Allows to automatically refresh, if image content changes.

Enumerator

On

Hooks in at Image::RegisterEventPixelContentChanged() to automatically refresh the ImageView.

Note: Automatic refresh will only work on CvbDeviceImages.

Off

Does not call refresh automatically.

◆ OpenGLTextureFormat

enum class OpenGLTextureFormat

strong

OpenGL texture format to hold the pixel data.

Enumerator
Unknown	Represent an invalid format for internal use.
RGB	Represents a three plane color format with 8 bit per plane.
Mono	Represents a gray scale color format with 8 bit per pixel.

◆ RefreshMode

enum class RefreshMode

strong

Defines the refresh behavior.

Enumerator

UploadOnly

This only uploads the pixel data, but does not repaint on screen. This may be used to synchronize painting with other widgets.

UploadAndScheduleRepaint

This uploads the pixel data and schedules a repaint via Qt's event loop. This may be used for high frame rates that do not allow to display every frame.

Note: This options leaves the responsibility for drawing to Qt. As a consequence drawing may be optimized behind the scenes (eg. omitting a repaint). For more details see the Qt documentation.

UploadAndWaitForRepaint

This does the same as UploadAndScheduleRepaint, but in addition it blocks your call to Refresh() until the pixel data was drawn on the screen. This may be used if you need an exact synchronization between the image display and your acquisition thread. This is the default option.

◆ RenderEngine

enum class RenderEngine

strong

Defines the render engine used for drawing.

See also: CvbQtImageView::Refresh(const CvbImage &, CvbRefreshMode)

Enumerator

Raster

This uses Qt's raster paint engine to draw the image. This option is available on all systems supporting Qt and does not have any requirements for the graphics hardware. This is the default option.

OpenGL2

Uses OpemGL2 (ES) to draw the image. This should be available on all graphics cards supporting OpenGL, if a vendor specific driver is installed.

Note: OpenGL2 (ES) is a requirement for for Qt5 OpenGL module.

OpenGL3

Uses OpemGL3 (ES) to draw the image. This should be available on most graphics cards, if a vendor specific driver is installed. However, a compatible OpenGL3 (ES) profile is required to actually render the image.

◆ UploadMode

enum class UploadMode

strong

Defines the upload behavior.

Enumerator

Image

Upload respectively copy the complete Image data, to frame buffer. This also includes parts of the image that are not visible. This allows smooth drawing and scaling. This is the default option.

Note: This does not require to share the image with the ImageView.

Viewport

Upload respectively copy only the visible part of the image. For large images this is usually much faster than uploading the whole image. The pixel data may be subsampled, as a consequence aliasing may occur.

Note: This does require to share the image with the ImageView.

◆ ZoomID

enum class ZoomID

strong

Identifier for a zoom factor.

Enumerator
Invalid	Represents an invalid zoom factor for internal use.
Custom	Represents a custom zoom factor that is user defined.
Panorama	Represents a dynamic zoom factor, that is dependent on the view port size of ImageView.
Factor1	Represents the zoom to draw the image in original size.
Factor2	Represents the zoom to draw the image scaled by 2.
Factor4	Represents the zoom to draw the image scaled by 4.
Factor8	Represents the zoom to draw the image scaled by 8.
Factor16	Represents the zoom to draw the image scaled by 16.
Factor32	Represents the zoom to draw the image scaled by 32.
Factor64	Represents the zoom to draw the image scaled by 64.
Factor128	Represents the zoom to draw the image scaled by 128.

Function Documentation

◆ CvbQtPluginPath()

QString CvbQtPluginPath ( )

inline

Directory to Qt plugins installed with CVB.

Returns: A path as string.

Exceptions

Any	exception derived from std::exception including CvbException.

◆ CvbQtQmlPath()

QString CvbQtQmlPath ( )

inline

Directory to Qt qml installed with CVB.

Returns: A path as string.

Exceptions

Any	exception derived from std::exception including CvbException.

◆ CvbToQt() [1/4]

QString CvbToQt ( const Cvb::String & text )

inlinenoexcept

Convenience converter for strings.

Parameters

[in] text String as used by CVB classes.

Returns: QString from the Qt library.

Exceptions

Does	not throw any exception.

◆ CvbToQt() [2/4]

QPointF CvbToQt ( Point2D< double > point )

inlinenoexcept

Convenience converter for points.

Parameters

[in] point Point used by CVB classes.

Returns: QPointF from the Qt library

Exceptions

Does	not throw any exception.

◆ CvbToQt() [3/4]

QRectF CvbToQt ( RectLT< double > rect )

inlinenoexcept

Convenience converter for rectangles.

Parameters

[in] rect Size used by CVB classes.

Returns: QRectF from the Qt library

Exceptions

Does	not throw any exception.

◆ CvbToQt() [4/4]

QSizeF CvbToQt ( Size2D< double > size )

inlinenoexcept

Convenience converter for sizes.

Parameters

[in] size Size used by CVB classes.

Returns: QSizeF from the Qt library

Exceptions

Does	not throw any exception.

◆ QtToCvb() [1/4]

Point2D< double > QtToCvb ( const QPointF & point )

inline

Convenience converter for points.

Parameters

[in] point QPointF from the Qt library.

Returns: point used by the CVB classes.

Exceptions

Does	not throw any exception.

◆ QtToCvb() [2/4]

RectLT< double > QtToCvb ( const QRectF & rect )

inlinenoexcept

Convenience converter for rectangles.

Parameters

[in] rect QRectF from the Qt library.

Returns: Rectangle used by the CVB classes.

Exceptions

Does	not throw any exception.

◆ QtToCvb() [3/4]

Cvb::String QtToCvb ( const QString text )

inlinenoexcept

Convenience converter for strings.

Parameters

[in] text QString from the Qt library.

Returns: string as used by CVB classes.

Exceptions

Does	not throw any exception.

◆ QtToCvb() [4/4]

Size2D< double > QtToCvb ( QSizeF size )

inlinenoexcept

Convenience converter for sizes.

Parameters

[in] size QSizeF from the Qt library.

Returns: size used by the CVB classes.

Exceptions

Does	not throw any exception.

Namespaces

Classes

Enumerations

Functions

Detailed Description

Enumeration Type Documentation

◆ AutoRefresh

◆ OpenGLTextureFormat

◆ RefreshMode

◆ RenderEngine

◆ UploadMode

◆ ZoomID

Function Documentation

◆ CvbQtPluginPath()

◆ CvbQtQmlPath()

◆ CvbToQt() [1/4]

◆ CvbToQt() [2/4]

◆ CvbToQt() [3/4]

◆ CvbToQt() [4/4]

◆ QtToCvb() [1/4]

◆ QtToCvb() [2/4]

◆ QtToCvb() [3/4]

◆ QtToCvb() [4/4]