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Diffstat (limited to 'common/src/com/android/tv/common/ui/setup/leanback/PagingIndicator.java')
-rw-r--r--common/src/com/android/tv/common/ui/setup/leanback/PagingIndicator.java377
1 files changed, 0 insertions, 377 deletions
diff --git a/common/src/com/android/tv/common/ui/setup/leanback/PagingIndicator.java b/common/src/com/android/tv/common/ui/setup/leanback/PagingIndicator.java
deleted file mode 100644
index e2c9be72..00000000
--- a/common/src/com/android/tv/common/ui/setup/leanback/PagingIndicator.java
+++ /dev/null
@@ -1,377 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.tv.common.ui.setup.leanback;
-
-import android.animation.Animator;
-import android.animation.AnimatorInflater;
-import android.animation.AnimatorSet;
-import android.content.Context;
-import android.content.res.Resources;
-import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
-import android.graphics.Canvas;
-import android.graphics.Color;
-import android.graphics.Paint;
-import android.graphics.Rect;
-import android.os.Build;
-import android.support.annotation.ColorInt;
-import android.support.annotation.VisibleForTesting;
-import android.util.AttributeSet;
-import android.view.View;
-
-import com.android.tv.common.R;
-import com.android.tv.common.annotation.UsedByReflection;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * A page indicator with dots.
- * @hide
- */
-public class PagingIndicator extends View {
- // attribute
- private final int mDotDiameter;
- private final int mDotRadius;
- private final int mDotGap;
- private final int mArrowDiameter;
- private final int mArrowRadius;
- private final int mArrowGap;
- private final int mShadowRadius;
- private Dot[] mDots;
- // X position when the dot is selected.
- private int[] mDotSelectedX;
- // X position when the dot is located to the left of the selected dot.
- private int[] mDotSelectedLeftX;
- // X position when the dot is located to the right of the selected dot.
- private int[] mDotSelectedRightX;
- private int mDotCenterY;
-
- // state
- private int mPageCount;
- private int mCurrentPage;
- private int mPreviousPage;
-
- // drawing
- @ColorInt
- private final int mDotFgSelectColor;
- private final Paint mBgPaint;
- private final Paint mFgPaint;
- private final Animator mShowAnimator;
- private final Animator mHideAnimator;
- private final AnimatorSet mAnimator = new AnimatorSet();
- private final Bitmap mArrow;
- private final Rect mArrowRect;
- private final float mArrowToBgRatio;
-
- public PagingIndicator(Context context) {
- this(context, null, 0);
- }
-
- public PagingIndicator(Context context, AttributeSet attrs) {
- this(context, attrs, 0);
- }
-
- public PagingIndicator(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
- Resources res = getResources();
- mDotRadius = res.getDimensionPixelSize(R.dimen.lb_page_indicator_dot_radius);
- mDotDiameter = mDotRadius * 2;
- mDotGap = res.getDimensionPixelSize(R.dimen.lb_page_indicator_dot_gap);
- mArrowGap = res.getDimensionPixelSize(R.dimen.lb_page_indicator_arrow_gap);
- mArrowDiameter = res.getDimensionPixelSize(R.dimen.lb_page_indicator_arrow_diameter);
- mArrowRadius = mArrowDiameter / 2;
- mBgPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
- mDotFgSelectColor = res.getColor(R.color.lb_page_indicator_arrow_background);
- int bgColor = res.getColor(R.color.lb_page_indicator_dot);
- int shadowColor = res.getColor(R.color.lb_page_indicator_arrow_shadow);
- mBgPaint.setColor(bgColor);
- mShadowRadius = res.getDimensionPixelSize(R.dimen.lb_page_indicator_arrow_shadow_radius);
- mFgPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
- int shadowOffset = res.getDimensionPixelSize(R.dimen.lb_page_indicator_arrow_shadow_offset);
- mFgPaint.setShadowLayer(mShadowRadius, shadowOffset, shadowOffset, shadowColor);
- mArrow = BitmapFactory.decodeResource(res, R.drawable.lb_ic_nav_arrow);
- mArrowRect = new Rect(0, 0, mArrow.getWidth(), mArrow.getHeight());
- mArrowToBgRatio = (float) mArrow.getWidth() / (float) mArrowDiameter;
- // Initialize animations.
- List<Animator> animators = new ArrayList<>();
- mShowAnimator = AnimatorInflater.loadAnimator(getContext(),
- R.animator.lb_page_indicator_dot_show);
- mHideAnimator = AnimatorInflater.loadAnimator(getContext(),
- R.animator.lb_page_indicator_dot_hide);
- animators.add(mShowAnimator);
- animators.add(mHideAnimator);
- mAnimator.playTogether(animators);
- // Use software layer to show shadows.
- setLayerType(View.LAYER_TYPE_SOFTWARE, null);
- }
-
- /**
- * Sets the page count.
- */
- public void setPageCount(int pages) {
- if (pages <= 0) {
- throw new IllegalArgumentException("The page count should be a positive integer");
- }
- mPageCount = pages;
- mDots = new Dot[mPageCount];
- for (int i = 0; i < mPageCount; ++i) {
- mDots[i] = new Dot();
- }
- calculateDotPositions();
- setSelectedPage(0);
- }
-
- /**
- * Called when the page has been selected.
- */
- public void onPageSelected(int pageIndex, boolean withAnimation) {
- if (mCurrentPage == pageIndex) {
- return;
- }
- if (mAnimator.isStarted()) {
- mAnimator.end();
- }
- mPreviousPage = mCurrentPage;
- if (withAnimation) {
- mHideAnimator.setTarget(mDots[mPreviousPage]);
- mShowAnimator.setTarget(mDots[pageIndex]);
- mAnimator.start();
- }
- setSelectedPage(pageIndex);
- }
-
- private void calculateDotPositions() {
- int left = getPaddingLeft();
- int top = getPaddingTop();
- int right = getWidth() - getPaddingRight();
- int requiredWidth = getRequiredWidth();
- int mid = (left + right) / 2;
- int startLeft = mid - requiredWidth / 2;
- mDotSelectedX = new int[mPageCount];
- mDotSelectedLeftX = new int[mPageCount];
- mDotSelectedRightX = new int[mPageCount];
- // mDotSelectedX[0] should be mDotSelectedLeftX[-1] + mArrowGap
- mDotSelectedX[0] = startLeft + mDotRadius - mDotGap + mArrowGap;
- mDotSelectedLeftX[0] = startLeft + mDotRadius;
- mDotSelectedRightX[0] = 0;
- for (int i = 1; i < mPageCount; i++) {
- mDotSelectedX[i] = mDotSelectedLeftX[i - 1] + mArrowGap;
- mDotSelectedLeftX[i] = mDotSelectedLeftX[i - 1] + mDotGap;
- mDotSelectedRightX[i] = mDotSelectedX[i - 1] + mArrowGap;
- }
- mDotCenterY = top + mArrowRadius;
- adjustDotPosition();
- }
-
- @VisibleForTesting
- int getPageCount() {
- return mPageCount;
- }
-
- @VisibleForTesting
- int[] getDotSelectedX() {
- return mDotSelectedX;
- }
-
- @VisibleForTesting
- int[] getDotSelectedLeftX() {
- return mDotSelectedLeftX;
- }
-
- @VisibleForTesting
- int[] getDotSelectedRightX() {
- return mDotSelectedRightX;
- }
-
- @Override
- protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
- int desiredHeight = getDesiredHeight();
- int height;
- switch (MeasureSpec.getMode(heightMeasureSpec)) {
- case MeasureSpec.EXACTLY:
- height = MeasureSpec.getSize(heightMeasureSpec);
- break;
- case MeasureSpec.AT_MOST:
- height = Math.min(desiredHeight, MeasureSpec.getSize(heightMeasureSpec));
- break;
- case MeasureSpec.UNSPECIFIED:
- default:
- height = desiredHeight;
- break;
- }
- int desiredWidth = getDesiredWidth();
- int width;
- switch (MeasureSpec.getMode(widthMeasureSpec)) {
- case MeasureSpec.EXACTLY:
- width = MeasureSpec.getSize(widthMeasureSpec);
- break;
- case MeasureSpec.AT_MOST:
- width = Math.min(desiredWidth, MeasureSpec.getSize(widthMeasureSpec));
- break;
- case MeasureSpec.UNSPECIFIED:
- default:
- width = desiredWidth;
- break;
- }
- setMeasuredDimension(width, height);
- }
-
- @Override
- protected void onSizeChanged(int width, int height, int oldWidth, int oldHeight) {
- setMeasuredDimension(width, height);
- calculateDotPositions();
- }
-
- private int getDesiredHeight() {
- return getPaddingTop() + mArrowDiameter + getPaddingBottom() + mShadowRadius;
- }
-
- private int getRequiredWidth() {
- return 2 * mDotRadius + 2 * mArrowGap + (mPageCount - 3) * mDotGap;
- }
-
- private int getDesiredWidth() {
- return getPaddingLeft() + getRequiredWidth() + getPaddingRight();
- }
-
- @Override
- protected void onDraw(Canvas canvas) {
- for (int i = 0; i < mPageCount; ++i) {
- mDots[i].draw(canvas);
- }
- }
-
- private void setSelectedPage(int now) {
- if (now == mCurrentPage) {
- return;
- }
-
- mCurrentPage = now;
- adjustDotPosition();
- }
-
- private void adjustDotPosition() {
- for (int i = 0; i < mCurrentPage; ++i) {
- mDots[i].deselect();
- mDots[i].mDirection = i == mPreviousPage ? Dot.LEFT : Dot.RIGHT;
- mDots[i].mCenterX = mDotSelectedLeftX[i];
- }
- mDots[mCurrentPage].select();
- mDots[mCurrentPage].mDirection = mPreviousPage < mCurrentPage ? Dot.LEFT : Dot.RIGHT;
- mDots[mCurrentPage].mCenterX = mDotSelectedX[mCurrentPage];
- for (int i = mCurrentPage + 1; i < mPageCount; ++i) {
- mDots[i].deselect();
- mDots[i].mDirection = Dot.RIGHT;
- mDots[i].mCenterX = mDotSelectedRightX[i];
- }
- }
-
- public class Dot {
- static final float LEFT = -1;
- static final float RIGHT = 1;
-
- float mAlpha;
- @ColorInt
- int mBgColor;
- @ColorInt
- int mFgColor;
- float mTranslationX;
- float mCenterX;
- float mDiameter;
- float mRadius;
- float mArrowImageRadius;
- float mDirection = RIGHT;
-
- void select() {
- mTranslationX = 0.0f;
- mCenterX = 0.0f;
- mDiameter = mArrowDiameter;
- mRadius = mArrowRadius;
- mArrowImageRadius = mRadius * mArrowToBgRatio;
- mAlpha = 1.0f;
- adjustAlpha();
- }
-
- void deselect() {
- mTranslationX = 0.0f;
- mCenterX = 0.0f;
- mDiameter = mDotDiameter;
- mRadius = mDotRadius;
- mArrowImageRadius = mRadius * mArrowToBgRatio;
- mAlpha = 0.0f;
- adjustAlpha();
- }
-
- public void adjustAlpha() {
- int alpha = Math.round(0xFF * mAlpha);
- int red = Color.red(mDotFgSelectColor);
- int green = Color.green(mDotFgSelectColor);
- int blue = Color.blue(mDotFgSelectColor);
- mFgColor = Color.argb(alpha, red, green, blue);
- }
-
- @UsedByReflection
- public float getAlpha() {
- return mAlpha;
- }
-
- @UsedByReflection
- public void setAlpha(float alpha) {
- this.mAlpha = alpha;
- adjustAlpha();
- invalidate();
- }
-
- @UsedByReflection
- public float getTranslationX() {
- return mTranslationX;
- }
-
- @UsedByReflection
- public void setTranslationX(float translationX) {
- this.mTranslationX = translationX * mDirection;
- invalidate();
- }
-
- @UsedByReflection
- public float getDiameter() {
- return mDiameter;
- }
-
- @UsedByReflection
- public void setDiameter(float diameter) {
- this.mDiameter = diameter;
- this.mRadius = diameter / 2;
- this.mArrowImageRadius = diameter / 2 * mArrowToBgRatio;
- invalidate();
- }
-
- void draw(Canvas canvas) {
- float centerX = mCenterX + mTranslationX;
- canvas.drawCircle(centerX, mDotCenterY, mRadius, mBgPaint);
- if (mAlpha > 0) {
- mFgPaint.setColor(mFgColor);
- canvas.drawCircle(centerX, mDotCenterY, mRadius, mFgPaint);
- canvas.drawBitmap(mArrow, mArrowRect, new Rect((int) (centerX - mArrowImageRadius),
- (int) (mDotCenterY - mArrowImageRadius),
- (int) (centerX + mArrowImageRadius),
- (int) (mDotCenterY + mArrowImageRadius)), null);
- }
- }
- }
-}
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