146 lines
4.9 KiB
Java
146 lines
4.9 KiB
Java
package com.annimon.everlastingsummer;
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import java.util.Locale;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.Color;
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import android.graphics.drawable.ColorDrawable;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.LayerDrawable;
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import android.util.AttributeSet;
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import android.util.SparseArray;
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import android.widget.ImageView;
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import com.annimon.everlastingsummer.drawables.TransitionAnimationDrawable;
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import com.annimon.everlastingsummer.transitions.Dissolve;
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import com.annimon.everlastingsummer.transitions.Fade;
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import com.annimon.everlastingsummer.transitions.Transition;
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import com.annimon.everlastingsummer.transitions.Transitions;
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/**
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* ImageView с поддержкой анимации переходов.
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* @author aNNiMON
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*/
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public class AnimatableImageView extends ImageView {
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private static final SparseArray<Drawable> colors;
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static {
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colors = new SparseArray<Drawable>();
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colors.append(Color.WHITE, new ColorDrawable(Color.WHITE));
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colors.append(Color.BLACK, new ColorDrawable(Color.BLACK));
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colors.append(0xFFEE1111, new ColorDrawable(0xFFEE1111));
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}
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private Drawable previous;
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public AnimatableImageView(Context context) {
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super(context);
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}
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public AnimatableImageView(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public AnimatableImageView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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public void setImageResource(int resId) {
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setImageResource(resId, "");
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}
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public int setImageResource(int resId, String effect) {
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previous = getDrawable();
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super.setImageResource(resId);
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return setAnimationEffect(effect);
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}
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@Override
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public void setImageDrawable(Drawable drawable) {
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setImageDrawable(drawable, "");
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}
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public int setImageDrawable(Drawable drawable, String effect) {
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previous = getDrawable();
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super.setImageDrawable(drawable);
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return setAnimationEffect("");
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}
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@Override
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public void setImageBitmap(Bitmap bm) {
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setImageBitmap(bm, "");
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}
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public int setImageBitmap(Bitmap bm, String effect) {
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previous = getDrawable();
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super.setImageBitmap(bm);
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return setAnimationEffect(effect);
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}
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@Override
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public Drawable getDrawable() {
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final Drawable result = super.getDrawable();
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if (result == null) return new ColorDrawable();
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if (result instanceof LayerDrawable) {
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final LayerDrawable ld = (LayerDrawable) result;
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return ld.getDrawable(ld.getNumberOfLayers() - 1);
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}
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return result;
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}
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private int setAnimationEffect(String animEffect) {
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final String effect = animEffect.toLowerCase(Locale.ENGLISH);
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if (!Transitions.contains(effect)) return 0;
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final Transition transition = Transitions.get(effect);
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switch (transition.type()) {
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case Transition.TYPE_FADE: {
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final TransitionAnimationDrawable drawable = fade((Fade) transition);
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setImageDrawable(drawable);
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drawable.startTransition();
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return drawable.getFullDuration();
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}
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case Transition.TYPE_DISSOLVE: {
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final Dissolve dissolve = (Dissolve) transition;
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final int delay = dissolve.getDelay();
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final TransitionAnimationDrawable drawable =
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new TransitionAnimationDrawable(delay, previous, getDrawable());
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setImageDrawable(drawable);
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drawable.setCrossFadeEnabled(true);
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drawable.startTransition();
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return drawable.getFullDuration();
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}
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default:
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return 0;
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}
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}
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private TransitionAnimationDrawable fade(Fade fade) {
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final int fadeColor = fade.getColor();
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// Достаём ColorDrawable из кэша или создаём новый и кладём в кэш
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Drawable fadeColorDrawable;
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if (colors.indexOfKey(fadeColor) < 0) {
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fadeColorDrawable = new ColorDrawable(fadeColor);
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colors.put(fadeColor, fadeColorDrawable);
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} else {
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fadeColorDrawable = colors.get(fadeColor);
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}
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final TransitionAnimationDrawable.Builder builder = new TransitionAnimationDrawable.Builder();
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builder.add(0, previous);
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// img1 -> color
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builder.add(fade.getOutTime(), fadeColorDrawable);
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if (fade.getHoldTime() > 0) {
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// color ~ color
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builder.add(fade.getHoldTime(), new ColorDrawable(fadeColor)); // копия обязательна!
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}
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// color -> img2
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builder.add(fade.getInTime(), getDrawable());
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return builder.build();
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}
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}
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