121 lines
3.6 KiB
Java
121 lines
3.6 KiB
Java
package org.fox.ttrss.util;
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// https://gist.github.com/JakeWharton/0a251d67649305d84e8a
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Canvas;
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import android.graphics.drawable.Drawable;
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import android.os.Build;
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import android.util.AttributeSet;
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import android.widget.ImageView;
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import org.fox.ttrss.R;
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public class ForegroundImageView extends ImageView {
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private Drawable foreground;
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public ForegroundImageView(Context context) {
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this(context, null);
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}
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public ForegroundImageView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public ForegroundImageView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ForegroundImageView);
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Drawable foreground = a.getDrawable(R.styleable.ForegroundImageView_android_foreground);
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if (foreground != null) {
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setForeground(foreground);
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}
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a.recycle();
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}
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/**
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* Supply a drawable resource that is to be rendered on top of all of the child
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* views in the frame layout.
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*
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* @param drawableResId The drawable resource to be drawn on top of the children.
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*/
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public void setForegroundResource(int drawableResId) {
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setForeground(getContext().getResources().getDrawable(drawableResId));
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}
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/**
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* Supply a Drawable that is to be rendered on top of all of the child
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* views in the frame layout.
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*
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* @param drawable The Drawable to be drawn on top of the children.
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*/
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public void setForeground(Drawable drawable) {
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if (foreground == drawable) {
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return;
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}
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if (foreground != null) {
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foreground.setCallback(null);
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unscheduleDrawable(foreground);
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}
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foreground = drawable;
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if (drawable != null) {
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drawable.setCallback(this);
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if (drawable.isStateful()) {
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drawable.setState(getDrawableState());
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}
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}
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requestLayout();
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invalidate();
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}
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@Override protected boolean verifyDrawable(Drawable who) {
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return super.verifyDrawable(who) || who == foreground;
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}
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@Override public void jumpDrawablesToCurrentState() {
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super.jumpDrawablesToCurrentState();
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if (foreground != null) foreground.jumpToCurrentState();
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}
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@Override protected void drawableStateChanged() {
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super.drawableStateChanged();
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if (foreground != null && foreground.isStateful()) {
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foreground.setState(getDrawableState());
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}
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}
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@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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if (foreground != null) {
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foreground.setBounds(0, 0, getMeasuredWidth(), getMeasuredHeight());
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invalidate();
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}
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}
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@Override protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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super.onSizeChanged(w, h, oldw, oldh);
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if (foreground != null) {
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foreground.setBounds(0, 0, w, h);
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invalidate();
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}
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}
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@Override public void draw(Canvas canvas) {
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super.draw(canvas);
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if (foreground != null) {
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foreground.draw(canvas);
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}
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}
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@Override public void drawableHotspotChanged(float x, float y) {
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super.drawableHotspotChanged(x, y);
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if (foreground != null && android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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foreground.setHotspot(x, y);
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}
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}
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} |