Class VLImageDisplay.TVLImageDisplayLayer

Revision as of 23:52, 25 June 2013 (view source) David Alm (Talk | contribs) (Automated Syncronization with Documentation) ← Older edit

Revision as of 00:11, 26 June 2013 (view source) David Alm (Talk | contribs) (Automated Syncronization with Documentation) Newer edit →

---

Revision as of 00:11, 26 June 2013

This is a Beta Read Only version of this page. Please review and send recommendations to mitov@mitov.com. We will enable the editing as soon as we are happy with the overall Wiki site.

Package: VideoLabBasicPkg

Unit: VLImageDisplay

Inherits: TVLImageDisplay

Contents 1 Syntax 1.1 Delphi: 1.2 C++ Builder: 1.3 Visual C++ (MFC): 1.4 C# (.NET): 2 Summary 3 Description 4 Methods 4.1 Public 5 From TVLImageDisplay 6 Properties 6.1 Published 7 Methods 7.1 Public 8 From TVLCommonImageDisplay 9 Properties 9.1 Published 10 Methods 10.1 Public 11 Pins 12 From TVLCommonDisplay 13 Properties 13.1 Published 13.2 Public 14 Methods 14.1 Public 15 Events 16 From TSLCustomControlItem 17 Properties 17.1 Public 18 Methods 18.1 Public

Syntax

Delphi:

type TVLImageDisplayLayer = class( TVLImageDisplay, ILPDrawItem )

C++ Builder:

class TVLImageDisplayLayer : public TVLImageDisplay

Visual C++ (MFC):

class CTVLImageDisplayLayer : public CTVLImageDisplay

C# (.NET):

public ref class TVLImageDisplayLayer : Mitov.VideoLab.ImageDisplay

Summary

Layer drawing video.

Description

Add this layer to draw video over the frames.

Diagram:

Example:

Methods

Public

• procedure DoLayerBegin(ACanvas : TLPCanvas; AWidth : Integer; AHeight : Integer; AXCoeff : Single; AYCoeff : Single)
• procedure DoLayerEnd()
• procedure DoLayerDraw(ACanvas : TLPCanvas; AWidth : Integer; AHeight : Integer; AXCoeff : Single; AYCoeff : Single; AContoursOnly : Boolean)
• procedure DoLayerMouseMove(AShift : TShiftState; AX : Integer; AY : Integer)
• procedure DoLayerMouseDown(Button : TMouseButton; Shift : TShiftState; X : Integer; Y : Integer)
• procedure DoLayerMouseUp(Button : TMouseButton; Shift : TShiftState; X : Integer; Y : Integer)
• procedure DoLayerMouseWheelDown(AShift : TShiftState; AX : Integer; AY : Integer)
• procedure DoLayerMouseWheelUp(AShift : TShiftState; AX : Integer; AY : Integer)
• procedure DoLayerMouseEnter()
• procedure DoLayerMouseLeave()
• function GetChachedData(ALink : TObject) : TObject
• procedure SetChachedData(ALink : TObject; AData : TObject)
• function GetOperations() : TLPDrawLayerOperations
• procedure AddLayerLink(ALink : TLPLayerCollectionItem)
• procedure RemoveLayerLink(ALink : TLPLayerCollectionItem)
• function GetName() : String
• function WriteLock() : IOWLockSection
• procedure SetBounds(ALeft : Integer; ATop : Integer; AWidth : Integer; AHeight : Integer)

From TVLImageDisplay

Properties

Published

• RenderMode - Specifies the desired rendering mode.

Methods

Public

• procedure DrawTo(AGraphics : IGPGraphics; AContoursOnly : Boolean; AWidth : Single; AHeight : Single)
• procedure Clear() - Clears the Display.
• procedure Invalidate()

From TVLCommonImageDisplay

Properties

Published

• AutoClear - Auto clear the display at the end of the video.
• AspectRatio - Specifies the desired aspect ration for the display.
• TabStop

Methods

Public

• procedure Clear() - Clears the display.
• procedure DisplayBitmap(ABitmap : TBitmap) - Displays the content of a bitmap.
• procedure DisplayBitmap(ABitmap : TVLBitmap) - Displays the content of a bitmap.
• procedure DisplayImage(AImage : IVLImageBuffer) - Displays the content of an image buffer.

Pins

• InputPin - The Video Input Pin of the display.
• UserControlOutputPin - User control source pin.

From TVLCommonDisplay

Properties

Published

• AutoSize - Auto-size to display to the video size.
• Center - Center the image in the display.
• Stretch - Stretch the image to the display size.
• StretchMax - Stretches the image to fill completely the frame, while preserving the aspect ration.
• Proportional - Keep the image proportional(Preserve aspect ratio).
• Color

Public

• ImageHeight - Returns the Height of the image in the display.
• ImageWidth - Returns the Width of the image in the display.
• ImageTop - Returns the Top position of the image in the display.
• ImageLeft - Returns the Left position of the image in the display.

Methods

Public

• procedure SetParent(AParent : TWinControl)
• function ScreenToImage(AValue : TPoint) : TPoint - Converts from screen coordinates into video frame coordinates.

Events

• OnMouseMove
• OnMouseDown
• OnMouseUp
• OnClick
• OnDblClick

From TSLCustomControlItem

Properties

Public

• Index
• ComponentList

Methods

Public

• function GetParentComponent() : TComponent
• function HasParent() : Boolean
• procedure SetParent(AParent : TWinControl)
• function GetHasEnable() : Boolean
• function GetCanDisable() : Boolean
• procedure SetParentComponent(AValue : TComponent)