Initial checkin of AOSP Messaging app.

b/23110861 Change-Id: I11db999bd10656801e618f78ab2b2ef74136fff1
2015-08-12 12:47:26 -07:00
parent ef8c7abbcf
commit d3b009ae55
1645 changed files with 186271 additions and 0 deletions
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+/*
+ * Copyright (C) 2015 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.messaging.ui.mediapicker;
+
+import android.content.Context;
+import android.hardware.Camera;
+import android.os.Parcelable;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.View;
+
+import java.io.IOException;
+
+/**
+ * A software rendered preview surface for the camera.  This renders slower and causes more jank, so
+ * HardwareCameraPreview is preferred if possible.
+ *
+ * There is a significant amount of duplication between HardwareCameraPreview and
+ * SoftwareCameraPreview which we can't easily share due to a lack of multiple inheritance, The
+ * implementations of the shared methods are delegated to CameraPreview
+ */
+public class SoftwareCameraPreview extends SurfaceView implements CameraPreview.CameraPreviewHost {
+    private final CameraPreview mPreview;
+
+    public SoftwareCameraPreview(final Context context) {
+        super(context);
+        mPreview = new CameraPreview(this);
+        getHolder().addCallback(new SurfaceHolder.Callback() {
+            @Override
+            public void surfaceCreated(final SurfaceHolder surfaceHolder) {
+                CameraManager.get().setSurface(mPreview);
+            }
+
+            @Override
+            public void surfaceChanged(final SurfaceHolder surfaceHolder, final int format, final int width,
+                                       final int height) {
+                CameraManager.get().setSurface(mPreview);
+            }
+
+            @Override
+            public void surfaceDestroyed(final SurfaceHolder surfaceHolder) {
+                CameraManager.get().setSurface(null);
+            }
+        });
+    }
+
+
+    @Override
+    protected void onVisibilityChanged(final View changedView, final int visibility) {
+        super.onVisibilityChanged(changedView, visibility);
+        mPreview.onVisibilityChanged(visibility);
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+        mPreview.onDetachedFromWindow();
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        mPreview.onAttachedToWindow();
+    }
+
+    @Override
+    protected void onRestoreInstanceState(final Parcelable state) {
+        super.onRestoreInstanceState(state);
+        mPreview.onRestoreInstanceState();
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        widthMeasureSpec = mPreview.getWidthMeasureSpec(widthMeasureSpec, heightMeasureSpec);
+        heightMeasureSpec = mPreview.getHeightMeasureSpec(widthMeasureSpec, heightMeasureSpec);
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    }
+
+    @Override
+    public View getView() {
+        return this;
+    }
+
+    @Override
+    public boolean isValid() {
+        return getHolder() != null;
+    }
+
+    @Override
+    public void startPreview(final Camera camera) throws IOException {
+        camera.setPreviewDisplay(getHolder());
+    }
+
+    @Override
+    public void onCameraPermissionGranted() {
+        mPreview.onCameraPermissionGranted();
+    }
+}
+
+