TsgDWFImage
Unit: DWF
Description
The main TsgDWFImage
class is a descendant of TsgCADImage
(which is a descendant of TGraphic) and overrides its methods. You can use the TsgDWFImage
objects in the TImage
control for displaying and navigation AutoCAD™ DXF drawings.
After loading a DWF file, its separate DWF/DXF entities are accessible through the Converter
property and its indexed property Entities
. All entities are descendants of TsgDXFEntity
. For example, the TEXT entity is the object of the TsgDXFText
type, etc. In other words, the entities are common for both DXF and DWG.
Syntax
TsgDWFImage = class(TsgCADImage)
Properties
Properties derived from TsgCADImage | Description |
---|---|
BackgroundColor | The property specifies the background color of the drawing which TsgCADImage displays. |
Blocks | The property lists the blocks references of the drawing. |
BorderSize | The property specifies the size of the drawing’s border in global points or ratio. |
BorderType | The property sets the type of drawing’s border. |
CachingRasterMode | The property specifies the size of drawing’s border in global points or ratio. |
CBFormat | The property displays predefined clipboard format. |
ColorToLineWeight | The property specifies the line weight for entities by colors. |
Converter | The property contains information about the loaded CAD file. |
CurrentLayout | The property sets the current layout. |
DefaultColor | The property sets the color for elements which have white color in AutoCAD™ DXF/DWG |
DimensionsVisible | The property switches on or off dimension of the drawing. |
DrawingBox | The property defines drawing box. |
DrawMatrix | The property gets the matrix used for drawing. |
DrawMode | The property specifies the current color mode. |
Entities | The property lists all the entities of the CAD file. |
Extents | The property defines drawing's extents. |
FileName | The property gets and sets the name of the file from which the image is loaded. |
IsDraw3DAxes | The property gets and sets 3Daxes drawing mode. |
IsDrawingRotated | The property defines if the drawing is rotated. |
IsLoading | The property defines if the drawing is loading. |
IsPlotting | The property defines the destination source status. |
IsProcessMessages | The property defines the messages processing mode. |
IsShowBackground | The property can be used to show background. |
IsShowLineWeight | The property can be used to draw all entities with NullWidth pixel lineweights. |
IsWithoutBorder | The property can be used to draw the drawing without adding the empty space (borders). |
Layouts | The property gets the indexed layout. |
LayoutsCount | The property gets the number of layouts. |
LineWeightScale | The property gets and sets the line weight scale. |
Millimeters | The property can be used to change the drawing units (millimeters/inches) |
NullWidth | The property specifies the default line weight of entities with zero lineweight. |
OwnSource | The property indicates if data is loaded. |
PureExtents | The property defines the exact image field in world coordinates, with no empty space added. |
ResizeDisproportionateDrawing | The property points to layer, containing given primitive if this layer is given. |
Scale | The property returns scale factor of the image as TFPoint structure. |
ShowImages | The property gets and sets the raster image drawing mode. |
Stretch | The property indicates whether the CAD drawing should be changed so that it exactly fits the bounds of the image control. |
TextVisible | The property switches on or off texts of the CAD image. |
TTFMode | The property specifies the mode of the TTF fonts reflection. |
UseWinEllipse | The property can be used for drawing most of the arcs and circles in the image using GDI Windows functions such as Ellipse, Arc, etc., not linearized. |
ViewRectangle | For CAD Import VCL internal uses only. |
Methods
Methods | Description |
---|---|
LoadFromStream | The method loads a CAD image from stream. |
Methods derived from TsgCADImage | Description |
---|---|
AbsHeight | The method returns the entire height of the CAD image. |
AbsWidth | The method returns the entire width of the CAD image. |
AddScaledDXF | The method adds a new drawing to the TsgCADImage object. |
AddScaledDXFEx | The method adds a new drawing to the TsgCADImage object. |
Assign | The method copies a CAD image object and increase reference to the Converter object. |
CommonToInternalUnits | The method converts CAD coordinates of an image to the coordinates of the inner drawing's coordinate system. |
Create | Creates and initializes a new TsgCADImage object. |
Destroy | Destroys an instance of the TsgCADImage class. |
DrawRect | The method renders a part of a loaded drawing on a device context specified by DC. |
ExportToMetafile | The method exports a CAD drawing to a Windows Enhanced metafile |
GetCADCoords | The method returns coordinates of a point on a drawing. |
GetEntityColor | The method returns the entity's color. |
GetExtents | The method recalculates the drawing extents. |
GetObjectSnapMask | The method returns the object snap mode. |
GetPoint | The method converts point from the 3D coordinate system to the 2D coordinate system. |
GetPointUCS | The method converts the UCS coordinates to the screen coordinates. |
GetRealImagePoint | The method the real coordinates of the point. |
GetSnapData | The method returns the data structure that contains the closest entity to the argument point, and the node point. |
GetVisibleArea | The method returns the visible area. |
InternalToCommonUnits | The method converts the coordinates of the inner drawing's coordinate system to the CAD coordinates of an image. |
LoadFromClipboardFormat | The method loads from clipboard. |
LoadFromFile | The method loads a CAD image from file. |
Measurement | The method returns the information about measurement system for linear and angular measures. |
RefreshCurrentLayout | The method refreshes sizes of the current layout. |
ResetDrawingBox | The method switches off the drawing box. |
Rotate | The method rotates the current image. |
RotDefault | The method rotates the image to the default view. |
RotToView | The method rotates the image by parameter defined in A3DView. |
SaveToClipboardFormat | The method saves to clipboard. |
SaveToFile | The method saves the image to the file. |
SaveToStream | The method saves the image to the stream. |
SetObjectSnapMask | The method sets the object snap mode. |
SetVisibleArea | The method sets an area for snap. |
StopLoading | The method stops loading the file and displays only the loaded data. |
Events
Events derived from TsgCADImage | Description |
---|---|
OnAfterRotate | The event occurs after a CAD image being rotated. |
OnBeforeRotate | The event occurs before a CAD image being rotated. |
OnLayoutChange | The event occurs when a current layout is being changed. |
Variables and constants
Variables and constants | Description |
---|---|
CF_DWF | Predefined clipboard format for use in the LoadFromClipboardFormat method. |