104 lines
3.0 KiB
Java
104 lines
3.0 KiB
Java
package app.fedilab.android.helper;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.ColorFilter;
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import android.graphics.Paint;
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import android.graphics.PixelFormat;
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import android.graphics.Rect;
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import android.graphics.Typeface;
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import android.graphics.drawable.Drawable;
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import androidx.annotation.NonNull;
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import androidx.core.content.ContextCompat;
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import app.fedilab.android.R;
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public class CountDrawable extends Drawable {
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private final Paint mBadgePaint;
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private final Paint mTextPaint;
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private final Rect mTxtRect = new Rect();
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private String mCount = "";
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private boolean mWillDraw;
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public CountDrawable(Context context) {
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float mTextSize = context.getResources().getDimension(R.dimen.badge_count_textsize);
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mBadgePaint = new Paint();
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mBadgePaint.setColor(ContextCompat.getColor(context, R.color.red_1));
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mBadgePaint.setAntiAlias(true);
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mBadgePaint.setStyle(Paint.Style.FILL);
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mTextPaint = new Paint();
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mTextPaint.setColor(Color.WHITE);
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mTextPaint.setTypeface(Typeface.DEFAULT);
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mTextPaint.setTextSize(mTextSize);
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mTextPaint.setAntiAlias(true);
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mTextPaint.setTextAlign(Paint.Align.CENTER);
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}
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@Override
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public void draw(@NonNull Canvas canvas) {
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if (!mWillDraw) {
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return;
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}
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Rect bounds = getBounds();
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float width = bounds.right - bounds.left;
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float height = bounds.bottom - bounds.top;
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// Position the badge in the top-right quadrant of the icon.
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/*Using Math.max rather than Math.min */
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float radius = ((Math.max(width, height) / 2)) / 2;
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float centerX = (width - radius - 1) + 5;
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float centerY = radius - 5;
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if (mCount.length() <= 2) {
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// Draw badge circle.
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canvas.drawCircle(centerX, centerY, (int) (radius + 5.5), mBadgePaint);
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} else {
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canvas.drawCircle(centerX, centerY, (int) (radius + 6.5), mBadgePaint);
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}
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// Draw badge count text inside the circle.
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mTextPaint.getTextBounds(mCount, 0, mCount.length(), mTxtRect);
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float textHeight = mTxtRect.bottom - mTxtRect.top;
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float textY = centerY + (textHeight / 2f);
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if (mCount.length() > 2)
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canvas.drawText("99+", centerX, textY, mTextPaint);
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else
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canvas.drawText(mCount, centerX, textY, mTextPaint);
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}
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/*
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Sets the count (i.e notifications) to display.
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*/
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public void setCount(String count) {
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mCount = count;
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// Only draw a badge if there are notifications.
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mWillDraw = !count.equalsIgnoreCase("0");
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invalidateSelf();
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}
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@Override
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public void setAlpha(int alpha) {
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// do nothing
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}
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@Override
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public void setColorFilter(ColorFilter cf) {
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// do nothing
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}
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@Override
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public int getOpacity() {
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return PixelFormat.UNKNOWN;
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}
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}
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