@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int height = mThumb.getIntrinsicHeight() + getPaddingTop() + getPaddingBottom();
height += (mAddedTouchBounds * 2);
setMeasuredDimension(widthSize, height);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
int thumbWidth = mThumb.getIntrinsicWidth();
int thumbHeight = mThumb.getIntrinsicHeight();
int addedThumb = mAddedTouchBounds;
int halfThumb = thumbWidth / 2;
int paddingLeft = getPaddingLeft() + addedThumb;
int paddingRight = getPaddingRight();
int bottom = getHeight() - getPaddingBottom() - addedThumb;
mThumb.setBounds(paddingLeft, bottom - thumbHeight, paddingLeft + thumbWidth, bottom);
int trackHeight = Math.max(mTrackHeight / 2, 1);
mTrack.setBounds(
paddingLeft + halfThumb,
bottom - halfThumb - trackHeight,
getWidth() - halfThumb - paddingRight - addedThumb,
bottom - halfThumb + trackHeight);
int scrubberHeight = Math.max(mScrubberHeight / 2, 2);
mScrubber.setBounds(
paddingLeft + halfThumb,
bottom - halfThumb - scrubberHeight,
paddingLeft + halfThumb,
bottom - halfThumb + scrubberHeight);
// Update the thumb position after size changed
updateThumbPosFromCurrentProgress();
}
public DiscreteSeekBar(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
setFocusable(true);
setWillNotDraw(false);
mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
float density = context.getResources().getDisplayMetrics().density;
mTrackHeight = (int) (1 * density);
mScrubberHeight = (int) (4 * density);
int thumbSize = (int) (density * ThumbDrawable.DEFAULT_SIZE_DP);
// Extra pixels for a touch area of 48dp
int touchBounds = (int) (density * 32);
mAddedTouchBounds = (touchBounds - thumbSize) / 2;
TypedArray a =
context.obtainStyledAttributes(
attrs, R.styleable.DiscreteSeekBar, defStyleAttr, R.style.Widget_DiscreteSeekBar);
int max = 100;
int min = 0;
int value = 0;
mMirrorForRtl = a.getBoolean(R.styleable.DiscreteSeekBar_dsb_mirrorForRtl, mMirrorForRtl);
mAllowTrackClick =
a.getBoolean(R.styleable.DiscreteSeekBar_dsb_allowTrackClickToDrag, mAllowTrackClick);
mIndicatorPopupEnabled =
a.getBoolean(R.styleable.DiscreteSeekBar_dsb_indicatorPopupEnabled, mIndicatorPopupEnabled);
int indexMax = R.styleable.DiscreteSeekBar_dsb_max;
int indexMin = R.styleable.DiscreteSeekBar_dsb_min;
int indexValue = R.styleable.DiscreteSeekBar_dsb_value;
final TypedValue out = new TypedValue();
// Not sure why, but we wanted to be able to use dimensions here...
if (a.getValue(indexMax, out)) {
if (out.type == TypedValue.TYPE_DIMENSION) {
max = a.getDimensionPixelSize(indexMax, max);
} else {
max = a.getInteger(indexMax, max);
}
}
if (a.getValue(indexMin, out)) {
if (out.type == TypedValue.TYPE_DIMENSION) {
min = a.getDimensionPixelSize(indexMin, min);
} else {
min = a.getInteger(indexMin, min);
}
}
if (a.getValue(indexValue, out)) {
if (out.type == TypedValue.TYPE_DIMENSION) {
value = a.getDimensionPixelSize(indexValue, value);
} else {
value = a.getInteger(indexValue, value);
}
}
mMin = min;
mMax = Math.max(min + 1, max);
mValue = Math.max(min, Math.min(max, value));
updateKeyboardRange();
mIndicatorFormatter = a.getString(R.styleable.DiscreteSeekBar_dsb_indicatorFormatter);
ColorStateList trackColor = a.getColorStateList(R.styleable.DiscreteSeekBar_dsb_trackColor);
ColorStateList progressColor =
a.getColorStateList(R.styleable.DiscreteSeekBar_dsb_progressColor);
ColorStateList rippleColor = a.getColorStateList(R.styleable.DiscreteSeekBar_dsb_rippleColor);
boolean editMode = isInEditMode();
if (editMode || rippleColor == null) {
rippleColor = new ColorStateList(new int[][] {new int[] {}}, new int[] {Color.DKGRAY});
}
if (editMode || trackColor == null) {
trackColor = new ColorStateList(new int[][] {new int[] {}}, new int[] {Color.GRAY});
}
if (editMode || progressColor == null) {
progressColor =
new ColorStateList(new int[][] {new int[] {}}, new int[] {DEFAULT_THUMB_COLOR});
}
mRipple = SeekBarCompat.getRipple(rippleColor);
if (isLollipopOrGreater) {
SeekBarCompat.setBackground(this, mRipple);
} else {
mRipple.setCallback(this);
}
TrackRectDrawable shapeDrawable = new TrackRectDrawable(trackColor);
mTrack = shapeDrawable;
mTrack.setCallback(this);
shapeDrawable = new TrackRectDrawable(progressColor);
mScrubber = shapeDrawable;
mScrubber.setCallback(this);
mThumb = new ThumbDrawable(progressColor, thumbSize);
mThumb.setCallback(this);
mThumb.setBounds(0, 0, mThumb.getIntrinsicWidth(), mThumb.getIntrinsicHeight());
if (!editMode) {
mIndicator = new PopupIndicator(context, attrs, defStyleAttr, convertValueToMessage(mMax));
mIndicator.setListener(mFloaterListener);
}
a.recycle();
setNumericTransformer(new DefaultNumericTransformer());
}
