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August 5, 2021 08:29
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PageIndicator.java modified (will delete it soon)
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package com.android.systemui.qs; | |
import android.content.Context; | |
import android.content.res.ColorStateList; | |
import android.content.res.TypedArray; | |
import android.graphics.drawable.AnimatedVectorDrawable; | |
import android.net.Uri; | |
import android.provider.Settings; | |
import android.util.AttributeSet; | |
import android.util.Log; | |
import android.view.View; | |
import android.view.ViewGroup; | |
import android.widget.ImageView; | |
import com.android.systemui.R; | |
import java.util.ArrayList; | |
public class PageIndicator extends ViewGroup { | |
private static final String TAG = "PageIndicator"; | |
private static final boolean DEBUG = false; | |
private static final long ANIMATION_DURATION = 250; | |
// The size of a single dot in relation to the whole animation. | |
private static final float SINGLE_SCALE = .4f; | |
private static final float MINOR_ALPHA = .42f; | |
private final ArrayList<Integer> mQueuedPositions = new ArrayList<>(); | |
private final int mPageIndicatorWidth; | |
private final int mPageIndicatorHeight; | |
private final int mPageDotWidth; | |
private int mPosition = -1; | |
private boolean mAnimating; | |
public PageIndicator(Context context, AttributeSet attrs) { | |
super(context, attrs); | |
mPageIndicatorWidth = | |
(int) mContext.getResources().getDimension(R.dimen.qs_page_indicator_width); | |
mPageIndicatorHeight = | |
(int) mContext.getResources().getDimension(R.dimen.qs_page_indicator_height); | |
mPageDotWidth = (int) (mPageIndicatorWidth * SINGLE_SCALE); | |
} | |
public void setNumPages(int numPages) { | |
TypedArray array = getContext().obtainStyledAttributes( | |
new int[]{android.R.attr.colorControlActivated}); | |
int color = array.getColor(0, 0); | |
array.recycle(); | |
setNumPages(numPages, color); | |
} | |
public void setNumPages(int numPages, int color) { | |
boolean show = Settings.System.getInt(mContext.getContentResolver(), | |
Settings.System.QS_FOOTER_PAGE_INDICATOR, 1) != 0; | |
setNumPages(numPages, color, show); | |
} | |
/** Overload of setNumPages that allows the indicator color to be specified.*/ | |
public void setNumPages(int numPages, int color, boolean show) { | |
setVisibility(numPages > 1 ? (show ? View.VISIBLE : View.GONE) : View.GONE); | |
if (numPages == getChildCount()) { | |
return; | |
} | |
if (mAnimating) { | |
Log.w(TAG, "setNumPages during animation"); | |
} | |
while (numPages < getChildCount()) { | |
removeViewAt(getChildCount() - 1); | |
} | |
while (numPages > getChildCount()) { | |
ImageView v = new ImageView(mContext); | |
v.setImageResource(R.drawable.minor_a_b); | |
v.setImageTintList(ColorStateList.valueOf(color)); | |
addView(v, new LayoutParams(mPageIndicatorWidth, mPageIndicatorHeight)); | |
} | |
// Refresh state. | |
setIndex(mPosition >> 1); | |
} | |
public void setLocation(float location) { | |
int index = (int) location; | |
setContentDescription(getContext().getString(R.string.accessibility_quick_settings_page, | |
(index + 1), getChildCount())); | |
int position = index << 1 | ((location != index) ? 1 : 0); | |
if (DEBUG) Log.d(TAG, "setLocation " + location + " " + index + " " + position); | |
int lastPosition = mPosition; | |
if (mQueuedPositions.size() != 0) { | |
lastPosition = mQueuedPositions.get(mQueuedPositions.size() - 1); | |
} | |
if (position == lastPosition) return; | |
if (mAnimating) { | |
if (DEBUG) Log.d(TAG, "Queueing transition to " + Integer.toHexString(position)); | |
mQueuedPositions.add(position); | |
return; | |
} | |
setPosition(position); | |
} | |
private void setPosition(int position) { | |
if (isVisibleToUser() && Math.abs(mPosition - position) == 1) { | |
animate(mPosition, position); | |
} else { | |
if (DEBUG) Log.d(TAG, "Skipping animation " + isVisibleToUser() + " " + mPosition | |
+ " " + position); | |
setIndex(position >> 1); | |
} | |
mPosition = position; | |
} | |
private void setIndex(int index) { | |
if (index == (mPosition >> 1)) { | |
post(() -> requestLayout()); | |
} | |
final int N = getChildCount(); | |
for (int i = 0; i < N; i++) { | |
ImageView v = (ImageView) getChildAt(i); | |
// Clear out any animation positioning. | |
v.setTranslationX(0); | |
v.setImageResource(R.drawable.major_a_b); | |
v.setAlpha(getAlpha(i == index)); | |
} | |
} | |
private void animate(int from, int to) { | |
if (DEBUG) Log.d(TAG, "Animating from " + Integer.toHexString(from) + " to " | |
+ Integer.toHexString(to)); | |
int fromIndex = from >> 1; | |
int toIndex = to >> 1; | |
// Set the position of everything, then we will manually control the two views involved | |
// in the animation. | |
setIndex(fromIndex); | |
boolean fromTransition = (from & 1) != 0; | |
boolean isAState = fromTransition ? from > to : from < to; | |
int firstIndex = Math.min(fromIndex, toIndex); | |
int secondIndex = Math.max(fromIndex, toIndex); | |
if (secondIndex == firstIndex) { | |
secondIndex++; | |
} | |
ImageView first = (ImageView) getChildAt(firstIndex); | |
ImageView second = (ImageView) getChildAt(secondIndex); | |
if (first == null || second == null) { | |
// may happen during reInflation or other weird cases | |
return; | |
} | |
// Lay the two views on top of each other. | |
second.setTranslationX(first.getX() - second.getX()); | |
playAnimation(first, getTransition(fromTransition, isAState, false)); | |
first.setAlpha(getAlpha(false)); | |
playAnimation(second, getTransition(fromTransition, isAState, true)); | |
second.setAlpha(getAlpha(true)); | |
mAnimating = true; | |
} | |
private float getAlpha(boolean isMajor) { | |
return isMajor ? 1 : MINOR_ALPHA; | |
} | |
private void playAnimation(ImageView imageView, int res) { | |
final AnimatedVectorDrawable avd = (AnimatedVectorDrawable) getContext().getDrawable(res); | |
imageView.setImageDrawable(avd); | |
avd.forceAnimationOnUI(); | |
avd.start(); | |
// TODO: Figure out how to user an AVD animation callback instead, which doesn't | |
// seem to be working right now... | |
postDelayed(mAnimationDone, ANIMATION_DURATION); | |
} | |
private int getTransition(boolean fromB, boolean isMajorAState, boolean isMajor) { | |
if (isMajor) { | |
if (fromB) { | |
if (isMajorAState) { | |
return R.drawable.major_b_a_animation; | |
} else { | |
return R.drawable.major_b_c_animation; | |
} | |
} else { | |
if (isMajorAState) { | |
return R.drawable.major_a_b_animation; | |
} else { | |
return R.drawable.major_c_b_animation; | |
} | |
} | |
} else { | |
if (fromB) { | |
if (isMajorAState) { | |
return R.drawable.minor_b_c_animation; | |
} else { | |
return R.drawable.minor_b_a_animation; | |
} | |
} else { | |
if (isMajorAState) { | |
return R.drawable.minor_c_b_animation; | |
} else { | |
return R.drawable.minor_a_b_animation; | |
} | |
} | |
} | |
} | |
@Override | |
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { | |
final int N = getChildCount(); | |
if (N == 0) { | |
super.onMeasure(widthMeasureSpec, heightMeasureSpec); | |
return; | |
} | |
final int widthChildSpec = MeasureSpec.makeMeasureSpec(mPageIndicatorWidth, | |
MeasureSpec.EXACTLY); | |
final int heightChildSpec = MeasureSpec.makeMeasureSpec(mPageIndicatorHeight, | |
MeasureSpec.EXACTLY); | |
for (int i = 0; i < N; i++) { | |
getChildAt(i).measure(widthChildSpec, heightChildSpec); | |
} | |
int width = (mPageIndicatorWidth - mPageDotWidth) * (N - 1) + mPageDotWidth; | |
setMeasuredDimension(width, mPageIndicatorHeight); | |
} | |
@Override | |
protected void onLayout(boolean changed, int l, int t, int r, int b) { | |
final int N = getChildCount(); | |
if (N == 0) { | |
return; | |
} | |
for (int i = 0; i < N; i++) { | |
int left = (mPageIndicatorWidth - mPageDotWidth) * i; | |
getChildAt(i).layout(left, 0, mPageIndicatorWidth + left, mPageIndicatorHeight); | |
} | |
} | |
private final Runnable mAnimationDone = new Runnable() { | |
@Override | |
public void run() { | |
if (DEBUG) Log.d(TAG, "onAnimationEnd - queued: " + mQueuedPositions.size()); | |
mAnimating = false; | |
if (mQueuedPositions.size() != 0) { | |
setPosition(mQueuedPositions.remove(0)); | |
} | |
} | |
}; | |
} |
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