package com.android.launcher3.icons; import android.content.res.Resources; import android.content.res.Resources.Theme; import android.graphics.Canvas; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.DrawableWrapper; import android.util.AttributeSet; import org.xmlpull.v1.XmlPullParser; /** * Extension of {@link DrawableWrapper} which scales the child drawables by a fixed amount. */ public class FixedScaleDrawable extends DrawableWrapper { // TODO b/33553066 use the constant defined in MaskableIconDrawable private static final float LEGACY_ICON_SCALE = .7f * .6667f; private float mScaleX, mScaleY; public FixedScaleDrawable() { super(new ColorDrawable()); mScaleX = LEGACY_ICON_SCALE; mScaleY = LEGACY_ICON_SCALE; } @Override public void draw(Canvas canvas) { int saveCount = canvas.save(); canvas.scale(mScaleX, mScaleY, getBounds().exactCenterX(), getBounds().exactCenterY()); super.draw(canvas); canvas.restoreToCount(saveCount); } @Override public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs) { } @Override public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs, Theme theme) { } public void setScale(float scale) { float h = getIntrinsicHeight(); float w = getIntrinsicWidth(); mScaleX = scale * LEGACY_ICON_SCALE; mScaleY = scale * LEGACY_ICON_SCALE; if (h > w && w > 0) { mScaleX *= w / h; } else if (w > h && h > 0) { mScaleY *= h / w; } } }