/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.systemui.bubbles;
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import static android.graphics.Paint.ANTI_ALIAS_FLAG;
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import static android.graphics.Paint.FILTER_BITMAP_FLAG;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Point;
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import android.graphics.Rect;
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import android.util.Log;
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import com.android.systemui.R;
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// XXX: Mostly opied from launcher code / can we share?
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/**
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* Contains parameters necessary to draw a badge for an icon (e.g. the size of the badge).
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*/
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public class BadgeRenderer {
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private static final String TAG = "BadgeRenderer";
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/** The badge sizes are defined as percentages of the app icon size. */
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private static final float SIZE_PERCENTAGE = 0.38f;
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/** Extra scale down of the dot. */
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private static final float DOT_SCALE = 0.6f;
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private final float mDotCenterOffset;
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private final float mCircleRadius;
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private final Paint mCirclePaint = new Paint(ANTI_ALIAS_FLAG | FILTER_BITMAP_FLAG);
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public BadgeRenderer(Context context) {
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mDotCenterOffset = getDotCenterOffset(context);
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mCircleRadius = getDotRadius(mDotCenterOffset);
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}
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/** Space between the center of the dot and the top or left of the bubble stack. */
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static float getDotCenterOffset(Context context) {
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final int iconSizePx =
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context.getResources().getDimensionPixelSize(R.dimen.individual_bubble_size);
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return SIZE_PERCENTAGE * iconSizePx;
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}
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static float getDotRadius(float dotCenterOffset) {
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int size = (int) (DOT_SCALE * dotCenterOffset);
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return size / 2f;
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}
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/**
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* Draw a circle in the top right corner of the given bounds.
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*
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* @param color The color (based on the icon) to use for the badge.
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* @param iconBounds The bounds of the icon being badged.
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* @param badgeScale The progress of the animation, from 0 to 1.
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* @param spaceForOffset How much space to offset the badge up and to the left or right.
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* @param onLeft Whether the badge should be draw on left or right side.
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*/
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public void draw(Canvas canvas, int color, Rect iconBounds, float badgeScale,
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Point spaceForOffset, boolean onLeft) {
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if (iconBounds == null) {
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Log.e(TAG, "Invalid null argument(s) passed in call to draw.");
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return;
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}
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canvas.save();
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// We draw the badge relative to its center.
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int x = onLeft ? iconBounds.left : iconBounds.right;
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float offset = onLeft ? (mDotCenterOffset / 2) : -(mDotCenterOffset / 2);
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float badgeCenterX = x + offset;
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float badgeCenterY = iconBounds.top + mDotCenterOffset / 2;
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canvas.translate(badgeCenterX + spaceForOffset.x, badgeCenterY - spaceForOffset.y);
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canvas.scale(badgeScale, badgeScale);
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mCirclePaint.setColor(color);
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canvas.drawCircle(0, 0, mCircleRadius, mCirclePaint);
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canvas.restore();
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}
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}
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