package com.ijoomer.menubuilder;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.GradientDrawable;
import android.util.AttributeSet;
import android.view.MotionEvent;
import com.ijoomer.src.R;
public class TopDrawer extends VerticalDrawer {
private int mIndicatorLeft;
TopDrawer(Activity activity, int dragMode) {
super(activity, dragMode);
}
public TopDrawer(Context context) {
super(context);
}
public TopDrawer(Context context, AttributeSet attrs) {
super(context, attrs);
}
public TopDrawer(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
public void openMenu(boolean animate) {
animateOffsetTo(mMenuSize, 0, animate);
}
@Override
public void closeMenu(boolean animate) {
animateOffsetTo(0, 0, animate);
}
@Override
public void setDropShadowColor(int color) {
final int endColor = color & 0x00FFFFFF;
mDropShadowDrawable = new GradientDrawable(GradientDrawable.Orientation.BOTTOM_TOP,
new int[] {
color,
endColor,
});
invalidate();
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
final int width = r - l;
final int height = b - t;
final int offsetPixels = (int) mOffsetPixels;
mMenuContainer.layout(0, 0, width, mMenuSize);
offsetMenu(offsetPixels);
if (USE_TRANSLATIONS) {
mContentContainer.layout(0, 0, width, height);
} else {
mContentContainer.layout(0, offsetPixels, width, height + offsetPixels);
}
}
/**
* Offsets the menu relative to its original position based on the position of the content.
*
* @param offsetPixels The number of pixels the content if offset.
*/
private void offsetMenu(int offsetPixels) {
if (mOffsetMenu && mMenuSize != 0) {
final int menuSize = mMenuSize;
final float openRatio = (menuSize - (float) offsetPixels) / menuSize;
if (USE_TRANSLATIONS) {
if (offsetPixels > 0) {
final int offset = (int) (0.25f * (-openRatio * menuSize));
mMenuContainer.setTranslationY(offset);
} else {
mMenuContainer.setTranslationY(-menuSize);
}
} else {
final int oldMenuTop = mMenuContainer.getTop();
final int offset = (int) (0.25f * (-openRatio * menuSize)) - oldMenuTop;
mMenuContainer.offsetTopAndBottom(offset);
mMenuContainer.setVisibility(offsetPixels == 0 ? INVISIBLE : VISIBLE);
}
}
}
@Override
protected void drawDropShadow(Canvas canvas, int offsetPixels) {
final int width = getWidth();
mDropShadowDrawable.setBounds(0, offsetPixels - mDropShadowSize, width, offsetPixels);
mDropShadowDrawable.draw(canvas);
}
@Override
protected void drawMenuOverlay(Canvas canvas, int offsetPixels) {
final int width = getWidth();
final float openRatio = ((float) offsetPixels) / mMenuSize;
mMenuOverlay.setBounds(0, 0, width, offsetPixels);
mMenuOverlay.setAlpha((int) (MAX_MENU_OVERLAY_ALPHA * (1.f - openRatio)));
mMenuOverlay.draw(canvas);
}
@Override
protected void drawIndicator(Canvas canvas, int offsetPixels) {
if (mActiveView != null && isViewDescendant(mActiveView)) {
Integer position = (Integer) mActiveView.getTag(R.id.mdActiveViewPosition);
final int pos = position == null ? 0 : position;
if (pos == mActivePosition) {
final int menuHeight = mMenuSize;
final int indicatorHeight = mActiveIndicator.getHeight();
final float openRatio = ((float) offsetPixels) / menuHeight;
mActiveView.getDrawingRect(mActiveRect);
offsetDescendantRectToMyCoords(mActiveView, mActiveRect);
final int indicatorWidth = mActiveIndicator.getWidth();
final float interpolatedRatio = 1.f - INDICATOR_INTERPOLATOR.getInterpolation((1.f - openRatio));
final int interpolatedHeight = (int) (indicatorHeight * interpolatedRatio);
final int indicatorTop = offsetPixels - interpolatedHeight;
if (mIndicatorAnimating) {
final int finalLeft = mActiveRect.left + ((mActiveRect.width() - indicatorWidth) / 2);
final int startLeft = mIndicatorStartPos;
final int diff = finalLeft - startLeft;
final int startOffset = (int) (diff * mIndicatorOffset);
mIndicatorLeft = startLeft + startOffset;
} else {
mIndicatorLeft = mActiveRect.left + ((mActiveRect.width() - indicatorWidth) / 2);
}
canvas.save();
canvas.clipRect(mIndicatorLeft, indicatorTop, mIndicatorLeft + indicatorWidth, offsetPixels);
canvas.drawBitmap(mActiveIndicator, mIndicatorLeft, indicatorTop, null);
canvas.restore();
}
}
}
@Override
protected int getIndicatorStartPos() {
return mIndicatorLeft;
}
@Override
protected void initPeekScroller() {
final int dx = mMenuSize / 3;
mPeekScroller.startScroll(0, 0, dx, 0, PEEK_DURATION);
}
@Override
protected void onOffsetPixelsChanged(int offsetPixels) {
if (USE_TRANSLATIONS) {
mContentContainer.setTranslationY(offsetPixels);
offsetMenu(offsetPixels);
invalidate();
} else {
mContentContainer.offsetTopAndBottom(offsetPixels - mContentContainer.getTop());
offsetMenu(offsetPixels);
invalidate();
}
}
//////////////////////////////////////////////////////////////////////
// Touch handling
//////////////////////////////////////////////////////////////////////
@Override
protected boolean isContentTouch(MotionEvent ev) {
return ev.getY() > mOffsetPixels;
}
@Override
protected boolean onDownAllowDrag(MotionEvent ev) {
return (!mMenuVisible && mInitialMotionY <= mTouchSize)
|| (mMenuVisible && mInitialMotionY >= mOffsetPixels);
}
@Override
protected boolean onMoveAllowDrag(MotionEvent ev, float diff) {
return (!mMenuVisible && mInitialMotionY <= mTouchSize && (diff > 0))
|| (mMenuVisible && mInitialMotionY >= mOffsetPixels);
}
@Override
protected void onMoveEvent(float dx) {
setOffsetPixels(Math.min(Math.max(mOffsetPixels + dx, 0), mMenuSize));
}
@Override
protected void onUpEvent(MotionEvent ev) {
final int offsetPixels = (int) mOffsetPixels;
if (mIsDragging) {
mVelocityTracker.computeCurrentVelocity(1000, mMaxVelocity);
final int initialVelocity = (int) mVelocityTracker.getXVelocity();
mLastMotionY = ev.getY();
animateOffsetTo(mVelocityTracker.getYVelocity() > 0 ? mMenuSize : 0, initialVelocity,
true);
// Close the menu when content is clicked while the menu is visible.
} else if (mMenuVisible && ev.getY() > offsetPixels) {
closeMenu();
}
}
}