diff options
Diffstat (limited to 'java/com/android/dialer/callcomposer/camera/camerafocus/RenderOverlay.java')
-rw-r--r-- | java/com/android/dialer/callcomposer/camera/camerafocus/RenderOverlay.java | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/java/com/android/dialer/callcomposer/camera/camerafocus/RenderOverlay.java b/java/com/android/dialer/callcomposer/camera/camerafocus/RenderOverlay.java new file mode 100644 index 000000000..c38ae6c81 --- /dev/null +++ b/java/com/android/dialer/callcomposer/camera/camerafocus/RenderOverlay.java @@ -0,0 +1,153 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.dialer.callcomposer.camera.camerafocus; + +import android.annotation.SuppressLint; +import android.content.Context; +import android.graphics.Canvas; +import android.util.AttributeSet; +import android.view.MotionEvent; +import android.view.View; +import android.widget.FrameLayout; +import java.util.ArrayList; +import java.util.List; + +/** Focusing overlay. */ +public class RenderOverlay extends FrameLayout { + + /** Render interface. */ + interface Renderer { + boolean handlesTouch(); + + boolean onTouchEvent(MotionEvent evt); + + void setOverlay(RenderOverlay overlay); + + void layout(int left, int top, int right, int bottom); + + void draw(Canvas canvas); + } + + private RenderView mRenderView; + private List<Renderer> mClients; + + // reverse list of touch clients + private List<Renderer> mTouchClients; + private int[] mPosition = new int[2]; + + public RenderOverlay(Context context, AttributeSet attrs) { + super(context, attrs); + mRenderView = new RenderView(context); + addView(mRenderView, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); + mClients = new ArrayList<>(10); + mTouchClients = new ArrayList<>(10); + setWillNotDraw(false); + + addRenderer(new PieRenderer(context)); + } + + public PieRenderer getPieRenderer() { + for (Renderer renderer : mClients) { + if (renderer instanceof PieRenderer) { + return (PieRenderer) renderer; + } + } + return null; + } + + public void addRenderer(Renderer renderer) { + mClients.add(renderer); + renderer.setOverlay(this); + if (renderer.handlesTouch()) { + mTouchClients.add(0, renderer); + } + renderer.layout(getLeft(), getTop(), getRight(), getBottom()); + } + + public void addRenderer(int pos, Renderer renderer) { + mClients.add(pos, renderer); + renderer.setOverlay(this); + renderer.layout(getLeft(), getTop(), getRight(), getBottom()); + } + + public void remove(Renderer renderer) { + mClients.remove(renderer); + renderer.setOverlay(null); + } + + @Override + public boolean dispatchTouchEvent(MotionEvent m) { + return false; + } + + private void adjustPosition() { + getLocationInWindow(mPosition); + } + + public void update() { + mRenderView.invalidate(); + } + + @SuppressLint("ClickableViewAccessibility") + private class RenderView extends View { + + public RenderView(Context context) { + super(context); + setWillNotDraw(false); + } + + @Override + public boolean onTouchEvent(MotionEvent evt) { + if (mTouchClients != null) { + boolean res = false; + for (Renderer client : mTouchClients) { + res |= client.onTouchEvent(evt); + } + return res; + } + return false; + } + + @Override + public void onLayout(boolean changed, int left, int top, int right, int bottom) { + adjustPosition(); + super.onLayout(changed, left, top, right, bottom); + if (mClients == null) { + return; + } + for (Renderer renderer : mClients) { + renderer.layout(left, top, right, bottom); + } + } + + @Override + public void draw(Canvas canvas) { + super.draw(canvas); + if (mClients == null) { + return; + } + boolean redraw = false; + for (Renderer renderer : mClients) { + renderer.draw(canvas); + redraw = redraw || ((OverlayRenderer) renderer).isVisible(); + } + if (redraw) { + invalidate(); + } + } + } +} |