private void showPress(MotionEvent event, boolean pressed) {
int touchZone = getTouchZone(event);
if (touchZone != MIDDLE_ZONE) {
TextView view = (TextView) getChildAt(mDisplayedPage + getTouchZone(event));
view.setTextColor(pressed ? mActiveTextColor.getColor() : mInactiveTextColor.getColor());
}
}
public void add(int index, String label) {
TextView textView = new TextView(mContext);
textView.setTextColor(mInactiveTextColor.getColor());
textView.setTextSize(16);
textView.setText(label);
addView(textView);
}
public PagerHeader(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
Resources resources = context.getResources();
mDisplayMetrics = resources.getDisplayMetrics();
// Get attributes from the layout xml
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PagerHeader, 0, 0);
// mActiveTextColor = new ColorSet(
// a.getColor(R.styleable.PagerHeader_activeTextColor, Color.GREEN));
mActiveTextColor = new ColorSet(resources.getColor(R.color.cputuner_green));
mInactiveTextColor =
new ColorSet(a.getColor(R.styleable.PagerHeader_inactiveTextColor, Color.LTGRAY));
mTabColor =
new ColorSet(a.getColor(R.styleable.PagerHeader_tabColor, mActiveTextColor.getColor()));
mTabHeight = a.getDimensionPixelSize(R.styleable.PagerHeader_tabHeight, dipToPixels(4));
mTabPadding = a.getDimensionPixelSize(R.styleable.PagerHeader_tabPadding, dipToPixels(10));
mPaddingPush = a.getDimensionPixelSize(R.styleable.PagerHeader_paddingPush, dipToPixels(50));
mFadingEdgeLength =
a.getDimensionPixelSize(R.styleable.PagerHeader_fadingEdgeLength, dipToPixels(30));
mShowTopShadow = a.getBoolean(R.styleable.PagerHeader_showTopShadow, true);
mShowBottomBar = a.getBoolean(R.styleable.PagerHeader_showBottomBar, true);
mShowTab = a.getBoolean(R.styleable.PagerHeader_showTab, true);
ColorSet fadingEdgeColorHint = new ColorSet(0);
int backgroundColor = a.getColor(R.styleable.PagerHeader_backgroundColor, Color.DKGRAY);
setBackgroundColor(backgroundColor);
fadingEdgeColorHint.setColor(backgroundColor);
mTabDrawable = new ShapeDrawable(new RectShape());
mTabDrawable.getPaint().setColor(mTabColor.getColor());
mBottomBar = new ShapeDrawable(new RectShape());
mBottomBar.getPaint().setColor(mTabColor.getColor());
mBottomBarHeight = dipToPixels(2);
mShadow =
new GradientDrawable(
GradientDrawable.Orientation.TOP_BOTTOM, new int[] {0x88000000, 0x00000000});
mShadowHeight = dipToPixels(3);
int[] fadingEdgeGradient =
new int[] {fadingEdgeColorHint.getColor(), fadingEdgeColorHint.getColor(0)};
mFadingEdgeLeft =
new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, fadingEdgeGradient);
mFadingEdgeRight =
new GradientDrawable(GradientDrawable.Orientation.RIGHT_LEFT, fadingEdgeGradient);
final ViewConfiguration config = ViewConfiguration.get(context);
int touchSlop = config.getScaledTouchSlop();
mTouchSlopSquare = touchSlop * touchSlop;
}
public void setPosition(int position, float positionOffset, int positionOffsetPixels) {
mTouchZonesAccurate = false;
int width = getWidth();
int center = width / 2;
// Move the view at position. This will be the label for the left
// of the two fragments that may be on the screen
if (position >= 0 && position < getChildCount()) {
TextView view = (TextView) getChildAt(position);
int viewWidth = view.getWidth();
int leftMin = 0;
if (position + 1 < getChildCount()) {
int nextViewWidth = getChildAt(position + 1).getWidth();
leftMin = Math.min(0, center - (nextViewWidth / 2) - mPaddingPush - viewWidth);
}
int leftMax = center - (viewWidth / 2);
int newLeft = map(positionOffset, 1, 0, leftMin, leftMax);
view.layout(newLeft, view.getTop(), newLeft + viewWidth, view.getBottom());
view.setTextColor(
Color.rgb(
map(positionOffset, 1, 0, mInactiveTextColor.red, mActiveTextColor.red),
map(positionOffset, 1, 0, mInactiveTextColor.green, mActiveTextColor.green),
map(positionOffset, 1, 0, mInactiveTextColor.blue, mActiveTextColor.blue)));
}
// Move the view at position + 1. This will be the label for the
// right of the two fragments that may be visible on screen
if ((position + 1) < getChildCount()) {
TextView view = (TextView) getChildAt(position + 1);
int viewWidth = view.getWidth();
int prevViewWidth = getChildAt(position).getWidth();
int leftMin = center - (viewWidth / 2);
int leftMax = Math.max(width - viewWidth, center + (prevViewWidth / 2) + mPaddingPush);
int newLeft = map(positionOffset, 1, 0, leftMin, leftMax);
view.layout(newLeft, view.getTop(), newLeft + viewWidth, view.getBottom());
view.setTextColor(
Color.rgb(
map(positionOffset, 1, 0, mActiveTextColor.red, mInactiveTextColor.red),
map(positionOffset, 1, 0, mActiveTextColor.green, mInactiveTextColor.green),
map(positionOffset, 1, 0, mActiveTextColor.blue, mInactiveTextColor.blue)));
}
// Move the view at position - 1. This will be the label for the
// fragment that is off the screen to the left, if it exists
if (position > 0) {
TextView view = (TextView) getChildAt(position - 1);
int plusOneLeft = getChildAt(position).getLeft();
int newLeft = view.getLeft();
int viewWidth = view.getWidth();
if (plusOneLeft < newLeft + viewWidth + mPaddingPush || newLeft < 0) {
newLeft = Math.min(0, plusOneLeft - viewWidth - mPaddingPush);
view.layout(newLeft, view.getTop(), newLeft + viewWidth, view.getBottom());
int alpha = map(positionOffset, 1, 0, 0, 255);
view.setTextColor(mInactiveTextColor.getColor(alpha));
}
}
// Move the view at position + 2. This will be the label for the
// fragment that is off the screen to the right, if it exists
if ((position + 2) < getChildCount()) {
TextView view = (TextView) getChildAt(position + 2);
int minusOneRight = getChildAt(position + 1).getRight();
int newLeft = view.getLeft();
int viewWidth = view.getWidth();
if (minusOneRight > (newLeft - mPaddingPush) || newLeft + viewWidth > width) {
newLeft = Math.max(minusOneRight + mPaddingPush, width - viewWidth);
view.layout(newLeft, view.getTop(), newLeft + viewWidth, view.getBottom());
int alpha = map(positionOffset, 0, 1, 0, 255);
view.setTextColor(mInactiveTextColor.getColor(alpha));
}
}
// Draw the tab under the active or oncoming TextView based on the
// positionOffset
View view = getChildAt(positionOffset < 0.5f ? position : position + 1);
int viewLeft = view.getLeft();
int viewRight = view.getRight();
float percent = (Math.abs(positionOffset - 0.5f) / 0.5f);
int tabHeight = (int) (mTabHeight * percent);
int alpha = (int) (255 * percent);
mTabDrawable.setBounds(
viewLeft - mTabPadding, getHeight() - tabHeight, viewRight + mTabPadding, getHeight());
mTabDrawable.setAlpha(alpha);
}
