Class
iOSBitmap
Warning
This item was deprecated in version 2020r2. Please use Picture as a replacement.
Description
A bitmap image that can be modified using the Graphics property.
Properties
Name |
Type |
Read-Only |
Shared |
|---|---|---|---|
✓ |
|||
✓ |
|||
✓ |
|||
✓ |
|||
✓ |
Methods
Name |
Parameters |
Returns |
Shared |
|---|---|---|---|
width As Integer, height As Integer, scale As Double, opaque As Boolean = False |
Property descriptions
iOSBitmap.Graphics
Graphics As iOSGraphics
The iOSGraphics object for the bitmap that is used for drawing.
This property is read-only.
Var pic As New iOSBitmap(100, 100, 2.0, False)
pic.Graphics.DrawRect(10, 10, 60, 60)
iOSBitmap.Height
Height As UInteger
The height of the bitmap that was created.
This property is read-only.
iOSBitmap.Image
Image As iOSImage
The image that has been drawn to the bitmap. If you need to modify the image, use the Graphics property.
This property is read-only.
iOSBitmap.Scale
Scale As Double
The scale of the image that has been drawn to the bitmap.
This property is read-only.
iOSBitmap.Width
Width As UInteger
The width of the image that has been drawn to the bitmap.
This property is read-only.
Method descriptions
iOSBitmap.Constructor
Constructor(width As Integer, height As Integer, scale As Double, opaque As Boolean = False)
Note
Constructors are special methods called when you create an object with the New keyword and pass in the parameters above.
Creates a bitmap image using the specified width, height, scale and opaqueness.
Setting opaque to True disables the alpha channel. If you know that you wil be filling every point in the bitmap, set opaque to True to improve performance.
The scale indicates how the image appears on the device. For example, bitmaps drawn with a scale of 1.0 will appear at half the size when drawn on a device with a 2x screen. When creating an iOSBitmap you intend to put on screen, you want your bitmap to have the same scale factor as the screen and the number of pixels in each dimension multiplied by the scale factor. Use the example code on the Declare page to check the device scale.
Var pic As New iOSBitmap(100, 100, 2.0, False)
pic.Graphics.DrawRect(10, 10, 60, 60)
Compatibility
iOS projects on the iOS operating system.
See also
Object parent class; iOSGraphics, Picture classes