BetterImageView

• BetterImageView

  Events:

  • Click
  • LongClick
  • Touch (Action As Int, X As Int, Y As Int)

  Fields:

  • SCALETYPE_CENTER As ScaleType
  • SCALETYPE_CENTER_CROP As ScaleType
  • SCALETYPE_CENTER_INSIDE As ScaleType
  • SCALETYPE_FIT_CENTER As ScaleType
  • SCALETYPE_FIT_END As ScaleType
  • SCALETYPE_FIT_START As ScaleType
  • SCALETYPE_FIT_XY As ScaleType

  Methods:

  • AlterColors (Source As Bitmap, Hue As Int, Saturation As Float) As Bitmap
    Changes the hue and the saturation of the given bitmap. Hue: from 0 to 360. 0 or 360 = no change. Saturation: 0 = gray-scale, 1 = no change.
  • ApplyColorFilter (Source As Bitmap, Multiply As Int, Add As Int) As Bitmap
    Applies a color filter to the specified bitmap that multiplies the RGB channels by one color, and then adds a second color, pinning the result for each component to [0..255].
  • BringToFront
    Changes the Z order of this view and brings it to the front.
  • ChangeAlpha (Alpha As Int)
    Changes the alpha value of the foreground image. Alpha an integer between 0 (fully transparent) and 255 (fully opaque).
  • ChangeBackgroundAlpha (Alpha As Int)
    Changes the alpha value of the background image. Alpha an integer between 0 (fully transparent) and 255 (fully opaque).
  • Initialize (EventPrefix As String)
    Initializes the BetterImageView. EventPrefix prefix of events.
  • Invalidate
    Invalidates the whole view forcing the view to redraw itself. Redrawing will only happen when the program can process messages. Usually when it finishes running the current code.
  • Invalidate2 (Rect As Rect)
    Invalidates the given rectangle. Redrawing will only happen when the program can process messages. Usually when it finishes running the current code.
  • Invalidate3 (Left As Int, Top As Int, Right As Int, Bottom As Int)
    Invalidates the given rectangle. Redrawing will only happen when the program can process messages. Usually when it finishes running the current code.
  • IsInitialized As Boolean
  • LoadNinePatchDrawable (Name As String) As Drawable
    Gets a 9-patch drawable from the application resources.
  • LoadScaledBitmap (Dir As String, FileName As String, NewWidth As Int, NewHeight As Int, Filter As Boolean) As Bitmap
    Loads and rescales a bitmap. Throws an exception if there's not enough memory to load the specified file. NewWidth: the new bitmap's desired width or -1 to keep the original width. NewHeight: the new bitmap's desired height or -1 to keep the original height. Filter: if True, improves the sampling quality.
  • ReduceColors (srcBmp As Bitmap) As Bitmap
    Converts a bitmap from the format ARGB_8888 to the format RGB_565 to save memory. This function removes the alpha channel and therefore the transparent areas become opaque.
  • RemoveView
    Removes this view from its parent.
  • RequestFocus As Boolean
    Tries to set the focus to this view. Returns True if the focus was set.
  • SendToBack
    Changes the Z order of this view and sends it to the back.
  • SetLayout (Left As Int, Top As Int, Width As Int, Height As Int)
    Changes the view position and size.

  Properties:

  • Background As Drawable
    Gets or sets the background drawable. Returns Null if there is no image.
  • BackgroundBitmap As Bitmap
    Gets or sets the background bitmap. Returns Null if the image is not a bitmap.
  • Bitmap As Bitmap
    Gets or sets the foreground bitmap. Returns Null if the image is not a bitmap.
  • Drawable As Drawable
    Gets or sets the foreground drawable. Returns Null if there is no image.
  • Enabled As Boolean
    Gets or sets whether this view is enabled (True) or disabled (False).
  • Gravity As Int
    Gets or sets the gravity of the background image. Only bitmaps are affected by gravity.
  • Height As Int
    Gets or sets the view's height.
  • Left As Int
    Gets or sets the view's left.
  • ScaleType As ScaleType
    Gets or sets how the foreground image should be resized or moved to match the size of this BetterImageView. The value is one of the SCALETYPE constants.
  • Tag As Object
    Gets or sets the Tag value. This is a place holder which can used to store additional data.
  • Top As Int
    Gets or sets the view's top.
  • Visible As Boolean
  • Width As Int
    Gets or sets the view's width.

• Author: F. Leneuf-Magaud

• Version: 1.1