/// <summary>
/// Sets (or replaces) the
/// <see cref="Drawable">Drawable</see>
/// for the layer with the given id.
/// </summary>
/// <param name="id">The layer ID to search for.</param>
/// <param name="drawable">
/// The replacement
/// <see cref="Drawable">Drawable</see>
/// .
/// </param>
/// <returns>
/// Whether the
/// <see cref="Drawable">Drawable</see>
/// was replaced (could return false if
/// the id was not found).
/// </returns>
public virtual bool setDrawableByLayerId(int id, android.graphics.drawable.Drawable
drawable)
{
android.graphics.drawable.LayerDrawable.ChildDrawable[] layers = mLayerState.mChildren;
{
for (int i = mLayerState.mNum - 1; i >= 0; i--)
{
if (layers[i].mId == id)
{
if (layers[i].mDrawable != null)
{
if (drawable != null)
{
android.graphics.Rect bounds = layers[i].mDrawable.getBounds();
drawable.setBounds(bounds);
}
layers[i].mDrawable.setCallback(null);
}
if (drawable != null)
{
drawable.setCallback(this);
}
layers[i].mDrawable = drawable;
return true;
}
}
}
return false;
}
/// <param name="gap">
/// If set to
/// <see cref="int.MinValue">int.MinValue</see>
/// , this will be ignored and
/// </param>
private void setThumbPos(int w, android.graphics.drawable.Drawable thumb, float scale
, int gap)
{
int available = w - mPaddingLeft - mPaddingRight;
int thumbWidth = thumb.getIntrinsicWidth();
int thumbHeight = thumb.getIntrinsicHeight();
available -= thumbWidth;
// The extra space for the thumb to move on the track
available += mThumbOffset * 2;
int thumbPos = (int)(scale * available);
int topBound;
int bottomBound;
if (gap == int.MinValue)
{
android.graphics.Rect oldBounds = thumb.getBounds();
topBound = oldBounds.top;
bottomBound = oldBounds.bottom;
}
else
{
topBound = gap;
bottomBound = gap + thumbHeight;
}
// Canvas will be translated, so 0,0 is where we start drawing
thumb.setBounds(thumbPos, topBound, thumbPos + thumbWidth, bottomBound);
}
public void setIcon(android.graphics.drawable.Drawable icon)
{
mIcon = icon;
if (icon != null)
{
icon.setBounds(0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
// Set the compound drawables
setCompoundDrawables(null, icon, null, null);
// When there is an icon, make sure the text is at the bottom
setGravity(android.view.Gravity.BOTTOM | android.view.Gravity.CENTER_HORIZONTAL);
requestLayout();
}
else
{
setCompoundDrawables(null, null, null, null);
// When there is no icon, make sure the text is centered vertically
setGravity(android.view.Gravity.CENTER_VERTICAL | android.view.Gravity.CENTER_HORIZONTAL
);
}
}
