Class VBECanvas

VBECanvas class. Used to control screen, by VBE (VESA BIOS Extensions) standard. See also: Canvas.

Inheritance
System.Object
Canvas
VBECanvas
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Cosmos.System.Graphics
Assembly: Cosmos.System2.dll
Syntax
public class VBECanvas : Canvas

Constructors

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VBECanvas()

Create new instance of the class.

Declaration
public VBECanvas()
Exceptions
Type Condition
System.ArgumentOutOfRangeException

Thrown if default mode (1024x768x32) is not suppoted.
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VBECanvas(Mode)

Create new instance of the class.

Declaration
public VBECanvas(Mode aMode)
Parameters
Type Name Description
Mode aMode
Exceptions
Type Condition
System.ArgumentOutOfRangeException

Thrown if mode is not suppoted.

Properties

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AvailableModes

Available VBE supported video modes.

Low res:

HD:

HDR:

HDTV:

Declaration
public override List<Mode> AvailableModes { get; }
Property Value
Type Description
System.Collections.Generic.List<Mode>
Overrides
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DefaultGraphicMode

Override Canvas default graphics mode.

Declaration
public override Mode DefaultGraphicMode { get; }
Property Value
Type Description
Mode
Overrides
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Mode

Get and set video mode.

Declaration
public override Mode Mode { get; set; }
Property Value
Type Description
Mode
Overrides
Exceptions
Type Condition
System.ArgumentOutOfRangeException

(set) Thrown if mode is not suppoted.

Methods

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Clear(Color)

Clear screen to specified color.

Declaration
public override void Clear(Color aColor)
Parameters
Type Name Description
System.Drawing.Color aColor
Overrides
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Clear(Int32)

Clear screen to specified color.

Declaration
public override void Clear(int aColor)
Parameters
Type Name Description
System.Int32 aColor
Overrides
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Disable()

Disables VBE Graphics mode, parent method returns to VGA text mode (80x25)

Declaration
public override void Disable()
Overrides
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Display()

Display screen

Declaration
public override void Display()
Overrides
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DrawArray(Color[], Int32, Int32, Int32, Int32)

Draw array of colors.

Declaration
public override void DrawArray(Color[] aColors, int aX, int aY, int aWidth, int aHeight)
Parameters
Type Name Description
System.Drawing.Color[] aColors

Colors array.
System.Int32 aX

X coordinate.
System.Int32 aY

Y coordinate.
System.Int32 aWidth

Width.
System.Int32 aHeight

unused.
Overrides
Exceptions
Type Condition
System.ArgumentOutOfRangeException

Thrown if coordinates are invalid, or width is less than 0.
System.NotImplementedException

Thrown if color depth is not supported.
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DrawFilledRectangle(Pen, Int32, Int32, Int32, Int32)

Draw filled rectangle.

Declaration
public override void DrawFilledRectangle(Pen aPen, int aX, int aY, int aWidth, int aHeight)
Parameters
Type Name Description
Pen aPen

Pen to draw with.
System.Int32 aX

X coordinate.
System.Int32 aY

Y coordinate.
System.Int32 aWidth

Width.
System.Int32 aHeight

Height.
Overrides
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DrawImage(Image, Int32, Int32)

Draw image.

Declaration
public override void DrawImage(Image aImage, int aX, int aY)
Parameters
Type Name Description
Image aImage

Image.
System.Int32 aX

X coordinate.
System.Int32 aY

Y coordinate.
Overrides
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DrawPoint(Pen, Int32, Int32)

Draw point to the screen.

Declaration
public override void DrawPoint(Pen aPen, int aX, int aY)
Parameters
Type Name Description
Pen aPen

Pen to draw the point with.
System.Int32 aX

X coordinate.
System.Int32 aY

Y coordinate.
Overrides
Exceptions
Type Condition
System.NotImplementedException

Thrown if color depth is not supported (currently only 32 is supported).
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DrawPoint(Pen, Single, Single)

Draw point to the screen. Not implemented.

Declaration
public override void DrawPoint(Pen aPen, float aX, float aY)
Parameters
Type Name Description
Pen aPen

Pen to draw the point with.
System.Single aX

X coordinate.
System.Single aY

Y coordinate.
Overrides
Exceptions
Type Condition
System.NotImplementedException

Thrown always (only int coordinats supported).
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GetPointColor(Int32, Int32)

Get point color.

Declaration
public override Color GetPointColor(int aX, int aY)
Parameters
Type Name Description
System.Int32 aX

X coordinate.
System.Int32 aY

Y coordinate.
Returns
Type Description
System.Drawing.Color

Color value.
Overrides
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Name()

Name of the backend

Declaration
public override string Name()
Returns
Type Description
System.String
Overrides