/// <summary>Sets the thumb that will be drawn at the end of the progress meter within the SeekBar.
/// </summary>
/// <remarks>
/// Sets the thumb that will be drawn at the end of the progress meter within the SeekBar.
/// <p>
/// If the thumb is a valid drawable (i.e. not null), half its width will be
/// used as the new thumb offset (@see #setThumbOffset(int)).
/// </remarks>
/// <param name="thumb">Drawable representing the thumb</param>
public virtual void setThumb(android.graphics.drawable.Drawable thumb)
{
bool needUpdate;
// This way, calling setThumb again with the same bitmap will result in
// it recalcuating mThumbOffset (if for example it the bounds of the
// drawable changed)
if (mThumb != null && thumb != mThumb)
{
mThumb.setCallback(null);
needUpdate = true;
}
else
{
needUpdate = false;
}
if (thumb != null)
{
thumb.setCallback(this);
// Assuming the thumb drawable is symmetric, set the thumb offset
// such that the thumb will hang halfway off either edge of the
// progress bar.
mThumbOffset = thumb.getIntrinsicWidth() / 2;
// If we're updating get the new states
if (needUpdate && (thumb.getIntrinsicWidth() != mThumb.getIntrinsicWidth() || thumb
.getIntrinsicHeight() != mThumb.getIntrinsicHeight()))
{
requestLayout();
}
}
mThumb = thumb;
invalidate();
if (needUpdate)
{
updateThumbPos(getWidth(), getHeight());
if (thumb.isStateful())
{
// Note that if the states are different this won't work.
// For now, let's consider that an app bug.
int[] state = getDrawableState();
thumb.setState(state);
}
}
}
/// <summary>Set a drawable to be used as a divider between items.</summary>
/// <remarks>Set a drawable to be used as a divider between items.</remarks>
/// <param name="divider">Drawable that will divide each item.</param>
/// <seealso cref="setShowDividers(int)">setShowDividers(int)</seealso>
public virtual void setDividerDrawable(android.graphics.drawable.Drawable divider
)
{
if (divider == mDivider)
{
return;
}
mDivider = divider;
if (divider != null)
{
mDividerWidth = divider.getIntrinsicWidth();
mDividerHeight = divider.getIntrinsicHeight();
}
else
{
mDividerWidth = 0;
mDividerHeight = 0;
}
setWillNotDraw(divider == null);
requestLayout();
}
/// <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);
}
/// <summary>Set the checkmark to a given Drawable.</summary>
/// <remarks>
/// Set the checkmark to a given Drawable. This will be drawn when
/// <see cref="isChecked()">isChecked()</see>
/// is true.
/// </remarks>
/// <param name="d">The Drawable to use for the checkmark.</param>
public virtual void setCheckMarkDrawable(android.graphics.drawable.Drawable d)
{
if (mCheckMarkDrawable != null)
{
mCheckMarkDrawable.setCallback(null);
unscheduleDrawable(mCheckMarkDrawable);
}
mNeedRequestlayout = (d != mCheckMarkDrawable);
if (d != null)
{
d.setCallback(this);
d.setVisible(getVisibility() == VISIBLE, false);
d.setState(CHECKED_STATE_SET);
setMinHeight(d.getIntrinsicHeight());
mCheckMarkWidth = d.getIntrinsicWidth();
d.setState(getDrawableState());
}
else
{
mCheckMarkWidth = 0;
}
mCheckMarkDrawable = d;
// Do padding resolution. This will call setPadding() and do a requestLayout() if needed.
resolvePadding();
}
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
);
}
}
private void useThumbDrawable(android.content.Context context, android.graphics.drawable.Drawable
drawable)
{
mThumbDrawable = drawable;
if (drawable is android.graphics.drawable.NinePatchDrawable)
{
mThumbW = context.getResources().getDimensionPixelSize([email protected].
fastscroll_thumb_width);
mThumbH = context.getResources().getDimensionPixelSize([email protected].
fastscroll_thumb_height);
}
else
{
mThumbW = drawable.getIntrinsicWidth();
mThumbH = drawable.getIntrinsicHeight();
}
mChangedBounds = true;
}
private void updateDrawable(android.graphics.drawable.Drawable d)
{
if (mDrawable != null)
{
mDrawable.setCallback(null);
unscheduleDrawable(mDrawable);
}
mDrawable = d;
if (d != null)
{
d.setCallback(this);
if (d.isStateful())
{
d.setState(getDrawableState());
}
d.setLevel(mLevel);
mDrawableWidth = d.getIntrinsicWidth();
mDrawableHeight = d.getIntrinsicHeight();
applyColorMod();
configureBounds();
}
else
{
mDrawableWidth = mDrawableHeight = -1;
}
}
