76 lines
2.2 KiB
Java
76 lines
2.2 KiB
Java
package org.thoughtcrime.securesms.components;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.graphics.Path;
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import android.graphics.PorterDuff;
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import android.graphics.PorterDuffXfermode;
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import android.graphics.RectF;
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import androidx.annotation.NonNull;
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import android.view.View;
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public class CornerMask {
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private final float[] radii = new float[8];
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private final Paint clearPaint = new Paint();
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private final Path outline = new Path();
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private final Path corners = new Path();
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private final RectF bounds = new RectF();
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public CornerMask(@NonNull View view) {
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view.setLayerType(View.LAYER_TYPE_HARDWARE, null);
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clearPaint.setColor(Color.BLACK);
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clearPaint.setStyle(Paint.Style.FILL);
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clearPaint.setAntiAlias(true);
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clearPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
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}
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public void mask(Canvas canvas) {
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bounds.left = 0;
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bounds.top = 0;
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bounds.right = canvas.getWidth();
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bounds.bottom = canvas.getHeight();
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corners.reset();
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corners.addRoundRect(bounds, radii, Path.Direction.CW);
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// Note: There's a bug in the P beta where most PorterDuff modes aren't working. But CLEAR does.
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// So we find and inverse path and use Mode.CLEAR.
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// See issue https://issuetracker.google.com/issues/111394085.
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outline.reset();
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outline.addRect(bounds, Path.Direction.CW);
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outline.op(corners, Path.Op.DIFFERENCE);
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canvas.drawPath(outline, clearPaint);
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}
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public void setRadius(int radius) {
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setRadii(radius, radius, radius, radius);
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}
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public void setRadii(int topLeft, int topRight, int bottomRight, int bottomLeft) {
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radii[0] = radii[1] = topLeft;
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radii[2] = radii[3] = topRight;
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radii[4] = radii[5] = bottomRight;
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radii[6] = radii[7] = bottomLeft;
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}
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public void setTopLeftRadius(int radius) {
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radii[0] = radii[1] = radius;
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}
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public void setTopRightRadius(int radius) {
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radii[2] = radii[3] = radius;
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}
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public void setBottomRightRadius(int radius) {
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radii[4] = radii[5] = radius;
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}
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public void setBottomLeftRadius(int radius) {
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radii[6] = radii[7] = radius;
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}
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}
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