TGIS_Bitmap class

Platform independent Bitmap (same object for all platforms).

Available also on: .NET | Java | ActiveX | Python.

Syntax

// Delphi
type
  TGIS_Bitmap = class( TGIS_ObjectDisposable )
  end;

// C++ Builder
class PASCALIMPLEMENTATION TGIS_Bitmap : public TGIS_ObjectDisposable
{
};

Inheritance

→ TGIS_ObjectDisposable

Constructors

Inherited Overrides Protected

Name	Visibility	Description
Create	public	Create an instance.
Create(Integer; Integer)	public	Create an instance with a given size.
Create(Integer; Integer; Boolean)	public	Create an instance with a specified size.
Create(Integer; Integer; TGIS_BitmapFactory)	public	Create an instance with a specified size using a specified bitmap factory.
Create(TGIS_Bitmap)	public	Create an instance from an existing bitmap.
Create(TGIS_BitmapFactory)	public	Create an instance using a specified bitmap factory.

Methods

Inherited Overrides Protected

Name	Visibility	Description
Assign	public	Assign bitmap from other instance.
BitmapType	public	Return the platform specific bitmap type.
Clear	public	Clear the bitmap with a specified color.
CreateViewer	public	Create a viewer for this bitmap.
DrawBitmap(TGIS_Bitmap; TGIS_Pixels; TRect; TRect)	public	Draw a rectangular region from one bitmap onto a rectangular region of this bitmap using a locked pixel buffer.
DrawBitmap(TGIS_Bitmap; TRect; TRect)	public	Draw a rectangular part of one bitmap onto a rectangular part of this bitmap.
DrawGlyph	public	Draw a symbol optimized for use as a button glyph.
DrawShape(TObject; Boolean; Double; TPoint)	public	Draw a shape on the bitmap for internal TGIS_Shape.PrepareContourInternal processing.
DrawShape(TObject; Integer; Boolean; Double; TPoint)	public	Draw a shape on the bitmap for internal TGIS_Shape.PrepareContourInternal processing.
DrawShape(TObject; Integer; Boolean; TGIS_Color; TGIS_Color; Double; TPoint)	public	Draw a shape on the bitmap for internal TGIS_Shape.PrepareContourInternal processing.
DrawSymbol(String)	public	Draw a symbol into the bitmap.
DrawSymbol(String; Integer)	public	Draw a symbol into the bitmap.
DrawSymbol(String; Integer; Single)	public	Draw a symbol into the bitmap.
DrawSymbol(String; Integer; TGIS_Color; TGIS_Color)	public	Draw a symbol into the bitmap.
DrawSymbol(String; Integer; TGIS_Color; TGIS_Color; Single)	public	Draw a symbol into the bitmap.
IsNilOrEmpty	public	Test if bitmap is empty or nil
LoadFromBitmap	public	Load bitmap from platform specific bitmap object.
LoadFromFile	public	Load bitmap from file.
LoadFromResourceName(IntPtr; String)	public	Load a bitmap resource from a specific module.
LoadFromResourceName(String)	public	Load bitmap from DK standard resource.
LoadFromResourceName(String; String)	public	Load a bitmap from a standard DK resource.
LoadFromStream	public	Load a bitmap from a platform specific stream object.
LockPixels(TGIS_Pixels)	public	Lock and return read-only raw bitmap pixels in the native platform format and native line order.
LockPixels(TGIS_Pixels; Boolean)	public	Lock and return raw bitmap pixels in the native platform format and native line order.
LockPixels(TGIS_Pixels; Boolean; TGIS_BitmapFormat; TGIS_BitmapLinesOrder)	public	Lock and return raw bitmap pixels.
MakeGlowing	public	Add a semitransparent glowing shadow to the bitmap.
MakeTransparent	public	Make the bitmap transparent by replacing all pixels that match the upper-left corner color with TGIS_Color.None (full ARGB transparency).
NativeFormat	public	Native bitmap format (ARGB or ABGR) for the current platform.
NativeLineOrder	public	Native line order of bitmaps (top-down or bottom-up) for the current platform.
SaveToFile(String)	public	Save bitmap to file.
SaveToFile(String; TGIS_PixelFormat; TGIS_PixelSubFormat; Integer)	public	Save the bitmap to a file.
SaveToStream(TObject)	public	Save the bitmap to a stream.
SaveToStream(TObject; TGIS_PixelFormat; TGIS_PixelSubFormat; Integer)	public	Save the bitmap to a stream.
ScaleBitmap	public	Scale bitmap pixels using the selected resampling filter.
UnlockPixels	public	Unlock pixels obtained by LockPixels and write back any changes if the lock was writable.

Properties

Inherited Protected

Name	Visibility	Description
BitmapFactory	public	Bitmap factory used to produce the bitmap data.
Height	public	Bitmap height in pixels.
IsEmpty	public	True if the bitmap is empty and has no native bitmap attached.
NativeBitmap	public	Platform specific native bitmap object, such as VCL TBitmap.
Path	public	Path to the bitmap file, available for bitmaps created from files.
PPI	public	Resolution of the bitmap in pixels per inch (PPI).
Premultiplied	public	True if the bitmap should be treated as premultiplied.
Transparent	public	True if bitmap is transparent.
Width	public	Bitmap width in pixels.

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Table of Contents

TGIS_Bitmap class

Syntax

Inheritance

Constructors

Methods

Properties

References

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Table of Contents

TGIS_Bitmap class

Syntax

Inheritance

Constructors

Methods

Properties

References

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