577 lines
19 KiB
Java
577 lines
19 KiB
Java
package org.thoughtcrime.securesms.components.camera;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.graphics.Canvas;
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import android.graphics.Rect;
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import android.hardware.Camera;
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import android.os.Build.VERSION;
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import android.os.Build.VERSION_CODES;
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import android.support.annotation.NonNull;
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import android.support.v4.view.MotionEventCompat;
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import android.support.v4.view.ViewCompat;
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import android.support.v4.view.animation.FastOutSlowInInterpolator;
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import android.support.v4.widget.ViewDragHelper;
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import android.util.AttributeSet;
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import android.view.LayoutInflater;
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import android.view.MotionEvent;
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import android.view.Surface;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageButton;
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import com.nineoldandroids.animation.ObjectAnimator;
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import org.thoughtcrime.securesms.R;
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import org.thoughtcrime.securesms.components.InputAwareLayout.InputView;
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import org.thoughtcrime.securesms.components.KeyboardAwareLinearLayout;
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import org.thoughtcrime.securesms.components.camera.CameraView.CameraViewListener;
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import org.thoughtcrime.securesms.logging.Log;
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import org.thoughtcrime.securesms.util.ServiceUtil;
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import org.thoughtcrime.securesms.util.Util;
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import org.thoughtcrime.securesms.util.ViewUtil;
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public class QuickAttachmentDrawer extends ViewGroup implements InputView, CameraViewListener {
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private static final String TAG = QuickAttachmentDrawer.class.getSimpleName();
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private final ViewDragHelper dragHelper;
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private CameraView cameraView;
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private int coverViewPosition;
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private KeyboardAwareLinearLayout container;
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private View coverView;
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private View controls;
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private ImageButton fullScreenButton;
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private ImageButton swapCameraButton;
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private ImageButton shutterButton;
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private int slideOffset;
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private float initialMotionX;
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private float initialMotionY;
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private int rotation;
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private AttachmentDrawerListener listener;
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private int halfExpandedHeight;
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private ObjectAnimator animator;
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private DrawerState drawerState = DrawerState.COLLAPSED;
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private Rect drawChildrenRect = new Rect();
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private boolean paused = false;
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public QuickAttachmentDrawer(Context context) {
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this(context, null);
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}
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public QuickAttachmentDrawer(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public QuickAttachmentDrawer(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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dragHelper = ViewDragHelper.create(this, 1.f, new ViewDragHelperCallback());
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initializeView();
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updateHalfExpandedAnchorPoint();
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onConfigurationChanged();
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}
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private void initializeView() {
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inflate(getContext(), R.layout.quick_attachment_drawer, this);
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cameraView = ViewUtil.findById(this, R.id.quick_camera);
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updateControlsView();
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coverViewPosition = getChildCount();
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controls.setVisibility(GONE);
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cameraView.setVisibility(GONE);
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cameraView.addListener(this);
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}
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public static boolean isDeviceSupported(Context context) {
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return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA) &&
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Camera.getNumberOfCameras() > 0;
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}
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@Override
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public boolean isShowing() {
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return drawerState.isVisible();
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}
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@Override
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public void hide(boolean immediate) {
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setDrawerStateAndUpdate(DrawerState.COLLAPSED, immediate);
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}
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@Override
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public void show(int height, boolean immediate) {
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setDrawerStateAndUpdate(DrawerState.HALF_EXPANDED, immediate);
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}
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public void onConfigurationChanged() {
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int rotation = ServiceUtil.getWindowManager(getContext()).getDefaultDisplay().getRotation();
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final boolean rotationChanged = this.rotation != rotation;
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this.rotation = rotation;
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if (rotationChanged) {
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if (isShowing()) {
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cameraView.onPause();
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}
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updateControlsView();
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setDrawerStateAndUpdate(drawerState, true);
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}
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}
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private void updateControlsView() {
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Log.i(TAG, "updateControlsView()");
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View controls = LayoutInflater.from(getContext()).inflate(isLandscape() ? R.layout.quick_camera_controls_land
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: R.layout.quick_camera_controls,
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this, false);
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shutterButton = (ImageButton) controls.findViewById(R.id.shutter_button);
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swapCameraButton = (ImageButton) controls.findViewById(R.id.swap_camera_button);
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fullScreenButton = (ImageButton) controls.findViewById(R.id.fullscreen_button);
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if (cameraView.isMultiCamera()) {
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swapCameraButton.setVisibility(View.VISIBLE);
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swapCameraButton.setImageResource(cameraView.isRearCamera() ? R.drawable.quick_camera_front
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: R.drawable.quick_camera_rear);
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swapCameraButton.setOnClickListener(new CameraFlipClickListener());
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}
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shutterButton.setOnClickListener(new ShutterClickListener());
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fullScreenButton.setOnClickListener(new FullscreenClickListener());
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ViewUtil.swapChildInPlace(this, this.controls, controls, indexOfChild(cameraView) + 1);
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this.controls = controls;
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}
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private boolean isLandscape() {
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return rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270;
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}
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private View getCoverView() {
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if (coverView == null) coverView = getChildAt(coverViewPosition);
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return coverView;
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}
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private KeyboardAwareLinearLayout getContainer() {
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if (container == null) container = (KeyboardAwareLinearLayout)getParent();
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return container;
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}
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private void updateHalfExpandedAnchorPoint() {
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if (getContainer() != null) {
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halfExpandedHeight = getContainer().getKeyboardHeight();
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}
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}
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@Override
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protected void onLayout(boolean changed, int l, int t, int r, int b) {
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if (changed && drawerState == DrawerState.FULL_EXPANDED) {
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setSlideOffset(getMeasuredHeight());
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}
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final int paddingLeft = getPaddingLeft();
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final int paddingTop = getPaddingTop();
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for (int i = 0; i < getChildCount(); i++) {
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final View child = getChildAt(i);
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final int childHeight = child.getMeasuredHeight();
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int childTop = paddingTop;
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int childLeft = paddingLeft;
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int childBottom;
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if (child == cameraView) {
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childTop = computeCameraTopPosition(slideOffset);
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childBottom = childTop + childHeight;
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if (cameraView.getMeasuredWidth() < getMeasuredWidth())
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childLeft = (getMeasuredWidth() - cameraView.getMeasuredWidth()) / 2 + paddingLeft;
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} else if (child == controls) {
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childBottom = getMeasuredHeight();
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} else {
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childTop = computeCoverTopPosition(slideOffset);
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childBottom = childTop + childHeight;
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}
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final int childRight = childLeft + child.getMeasuredWidth();
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child.layout(childLeft, childTop, childRight, childBottom);
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}
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
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final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
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final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
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final int heightSize = MeasureSpec.getSize(heightMeasureSpec);
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if (widthMode != MeasureSpec.EXACTLY) {
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throw new IllegalStateException("Width must have an exact value or MATCH_PARENT");
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} else if (heightMode != MeasureSpec.EXACTLY) {
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throw new IllegalStateException("Height must have an exact value or MATCH_PARENT");
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}
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int layoutHeight = heightSize - getPaddingTop() - getPaddingBottom();
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for (int i = 0; i < getChildCount(); i++) {
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final View child = getChildAt(i);
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final LayoutParams lp = child.getLayoutParams();
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if (child.getVisibility() == GONE && i == 0) {
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continue;
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}
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int childWidthSpec;
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switch (lp.width) {
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case LayoutParams.WRAP_CONTENT:
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childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.AT_MOST);
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break;
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case LayoutParams.MATCH_PARENT:
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childWidthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY);
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break;
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default:
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childWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
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break;
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}
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int childHeightSpec;
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switch (lp.height) {
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case LayoutParams.WRAP_CONTENT:
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childHeightSpec = MeasureSpec.makeMeasureSpec(layoutHeight, MeasureSpec.AT_MOST);
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break;
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case LayoutParams.MATCH_PARENT:
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childHeightSpec = MeasureSpec.makeMeasureSpec(layoutHeight, MeasureSpec.EXACTLY);
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break;
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default:
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childHeightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
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break;
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}
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child.measure(childWidthSpec, childHeightSpec);
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}
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setMeasuredDimension(widthSize, heightSize);
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}
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@Override
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protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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super.onSizeChanged(w, h, oldw, oldh);
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if (h != oldh) updateHalfExpandedAnchorPoint();
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}
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@Override
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protected boolean drawChild(@NonNull Canvas canvas, @NonNull View child, long drawingTime) {
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boolean result;
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final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);
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canvas.getClipBounds(drawChildrenRect);
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if (child == coverView) {
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drawChildrenRect.bottom = Math.min(drawChildrenRect.bottom, child.getBottom());
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} else if (coverView != null) {
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drawChildrenRect.top = Math.max(drawChildrenRect.top, coverView.getBottom());
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}
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canvas.clipRect(drawChildrenRect);
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result = super.drawChild(canvas, child, drawingTime);
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canvas.restoreToCount(save);
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return result;
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}
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@Override
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public void computeScroll() {
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if (dragHelper.continueSettling(true)) {
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ViewCompat.postInvalidateOnAnimation(this);
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}
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if (slideOffset == 0 && cameraView.isStarted()) {
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cameraView.onPause();
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controls.setVisibility(GONE);
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cameraView.setVisibility(GONE);
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} else if (slideOffset != 0 && !cameraView.isStarted() & !paused) {
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controls.setVisibility(VISIBLE);
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cameraView.setVisibility(VISIBLE);
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cameraView.onResume();
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}
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}
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private void setDrawerState(DrawerState drawerState) {
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switch (drawerState) {
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case COLLAPSED:
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fullScreenButton.setImageResource(R.drawable.quick_camera_fullscreen);
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break;
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case HALF_EXPANDED:
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if (isLandscape()) {
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setDrawerState(DrawerState.FULL_EXPANDED);
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return;
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}
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fullScreenButton.setImageResource(R.drawable.quick_camera_fullscreen);
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break;
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case FULL_EXPANDED:
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fullScreenButton.setImageResource(isLandscape() ? R.drawable.quick_camera_hide
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: R.drawable.quick_camera_exit_fullscreen);
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break;
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}
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if (listener != null && drawerState != this.drawerState) {
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this.drawerState = drawerState;
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listener.onAttachmentDrawerStateChanged(drawerState);
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}
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}
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@SuppressWarnings("unused")
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public void setSlideOffset(int slideOffset) {
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this.slideOffset = slideOffset;
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requestLayout();
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}
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public int getTargetSlideOffset() {
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switch (drawerState) {
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case FULL_EXPANDED: return getMeasuredHeight();
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case HALF_EXPANDED: return halfExpandedHeight;
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default: return 0;
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}
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}
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public void setDrawerStateAndUpdate(final DrawerState requestedDrawerState) {
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setDrawerStateAndUpdate(requestedDrawerState, false);
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}
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public void setDrawerStateAndUpdate(final DrawerState requestedDrawerState, boolean instant) {
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DrawerState oldDrawerState = this.drawerState;
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setDrawerState(requestedDrawerState);
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if (oldDrawerState != drawerState) {
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updateHalfExpandedAnchorPoint();
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slideTo(getTargetSlideOffset(), instant);
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}
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}
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public void setListener(AttachmentDrawerListener listener) {
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this.listener = listener;
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cameraView.addListener(listener);
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}
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@Override
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public void onImageCapture(@NonNull byte[] imageBytes) {}
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@Override
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public void onCameraFail() {
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swapCameraButton.setEnabled(false);
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shutterButton.setEnabled(false);
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}
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@Override
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public void onCameraStart() {
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swapCameraButton.setEnabled(true);
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shutterButton.setEnabled(true);
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}
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@Override
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public void onCameraStop() {
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swapCameraButton.setEnabled(false);
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shutterButton.setEnabled(false);
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}
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public interface AttachmentDrawerListener extends CameraViewListener {
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void onAttachmentDrawerStateChanged(DrawerState drawerState);
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}
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private class ViewDragHelperCallback extends ViewDragHelper.Callback {
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@Override
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public boolean tryCaptureView(View child, int pointerId) {
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return child == controls;
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}
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@Override
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public void onViewDragStateChanged(int state) {
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if (dragHelper.getViewDragState() == ViewDragHelper.STATE_IDLE) {
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setDrawerState(drawerState);
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slideOffset = getTargetSlideOffset();
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requestLayout();
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}
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}
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@Override
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public void onViewCaptured(View capturedChild, int activePointerId) {
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}
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@Override
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public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
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slideOffset = Util.clamp(slideOffset - dy, 0, getMeasuredHeight());
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requestLayout();
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}
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@Override
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public void onViewReleased(View releasedChild, float xvel, float yvel) {
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if (releasedChild == controls) {
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float direction = -yvel;
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DrawerState drawerState = DrawerState.COLLAPSED;
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if (direction > 1) {
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drawerState = DrawerState.FULL_EXPANDED;
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} else if (direction < -1) {
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boolean halfExpand = (slideOffset > halfExpandedHeight && !isLandscape());
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drawerState = halfExpand ? DrawerState.HALF_EXPANDED : DrawerState.COLLAPSED;
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} else if (!isLandscape()) {
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if (slideOffset >= (halfExpandedHeight + getMeasuredHeight()) / 2) {
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drawerState = DrawerState.FULL_EXPANDED;
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} else if (slideOffset >= halfExpandedHeight / 2) {
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drawerState = DrawerState.HALF_EXPANDED;
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}
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}
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setDrawerState(drawerState);
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int slideOffset = getTargetSlideOffset();
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dragHelper.captureChildView(coverView, 0);
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dragHelper.settleCapturedViewAt(coverView.getLeft(), computeCoverTopPosition(slideOffset));
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dragHelper.captureChildView(cameraView, 0);
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dragHelper.settleCapturedViewAt(cameraView.getLeft(), computeCameraTopPosition(slideOffset));
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ViewCompat.postInvalidateOnAnimation(QuickAttachmentDrawer.this);
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}
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}
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@Override
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public int getViewVerticalDragRange(View child) {
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return getMeasuredHeight();
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}
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@Override
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public int clampViewPositionVertical(View child, int top, int dy) {
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return top;
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}
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}
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@Override
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public boolean onInterceptTouchEvent(MotionEvent event) {
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final int action = MotionEventCompat.getActionMasked(event);
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if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
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dragHelper.cancel();
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return false;
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}
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final float x = event.getX();
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final float y = event.getY();
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switch (action) {
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case MotionEvent.ACTION_DOWN:
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initialMotionX = x;
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initialMotionY = y;
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break;
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case MotionEvent.ACTION_MOVE:
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final float adx = Math.abs(x - initialMotionX);
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final float ady = Math.abs(y - initialMotionY);
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final int dragSlop = dragHelper.getTouchSlop();
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if (adx > dragSlop && ady < dragSlop) {
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return super.onInterceptTouchEvent(event);
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}
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if ((ady > dragSlop && adx > ady) || !isDragViewUnder((int) initialMotionX, (int) initialMotionY)) {
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dragHelper.cancel();
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return false;
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}
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break;
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}
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return dragHelper.shouldInterceptTouchEvent(event);
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}
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@Override
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public boolean onTouchEvent(@NonNull MotionEvent event) {
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dragHelper.processTouchEvent(event);
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return true;
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}
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// NOTE: Android Studio bug misreports error, squashing the warning.
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// https://code.google.com/p/android/issues/detail?id=175977
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@SuppressWarnings("ResourceType")
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private boolean isDragViewUnder(int x, int y) {
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int[] viewLocation = new int[2];
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cameraView.getLocationOnScreen(viewLocation);
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int[] parentLocation = new int[2];
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this.getLocationOnScreen(parentLocation);
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int screenX = parentLocation[0] + x;
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int screenY = parentLocation[1] + y;
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return screenX >= viewLocation[0] && screenX < viewLocation[0] + cameraView.getWidth() &&
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screenY >= viewLocation[1] && screenY < viewLocation[1] + cameraView.getHeight();
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}
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private int computeCameraTopPosition(int slideOffset) {
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if (VERSION.SDK_INT < VERSION_CODES.ICE_CREAM_SANDWICH) {
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return getPaddingTop();
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}
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final int baseCameraTop = (cameraView.getMeasuredHeight() - halfExpandedHeight) / 2;
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final int baseOffset = getMeasuredHeight() - slideOffset - baseCameraTop;
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final float slop = Util.clamp((float)(slideOffset - halfExpandedHeight) / (getMeasuredHeight() - halfExpandedHeight),
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0f,
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1f);
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return baseOffset + (int)(slop * baseCameraTop);
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}
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private int computeCoverTopPosition(int slideOffset) {
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return getMeasuredHeight() - getPaddingBottom() - slideOffset - getCoverView().getMeasuredHeight();
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}
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private void slideTo(int slideOffset, boolean forceInstant) {
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if (animator != null) {
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animator.cancel();
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animator = null;
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}
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if (!forceInstant) {
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animator = ObjectAnimator.ofInt(this, "slideOffset", this.slideOffset, slideOffset);
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animator.setInterpolator(new FastOutSlowInInterpolator());
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animator.setDuration(400);
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animator.start();
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ViewCompat.postInvalidateOnAnimation(this);
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} else {
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this.slideOffset = slideOffset;
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requestLayout();
|
|
invalidate();
|
|
}
|
|
}
|
|
|
|
public void onPause() {
|
|
paused = true;
|
|
cameraView.onPause();
|
|
}
|
|
|
|
public void onResume() {
|
|
paused = false;
|
|
if (drawerState.isVisible()) cameraView.onResume();
|
|
}
|
|
|
|
public enum DrawerState {
|
|
COLLAPSED, HALF_EXPANDED, FULL_EXPANDED;
|
|
|
|
public boolean isVisible() {
|
|
return this != COLLAPSED;
|
|
}
|
|
}
|
|
|
|
private class ShutterClickListener implements OnClickListener {
|
|
@Override
|
|
public void onClick(View v) {
|
|
boolean crop = drawerState != DrawerState.FULL_EXPANDED;
|
|
int imageHeight = crop ? getContainer().getKeyboardHeight() : cameraView.getMeasuredHeight();
|
|
Rect previewRect = new Rect(0, 0, cameraView.getMeasuredWidth(), imageHeight);
|
|
cameraView.takePicture(previewRect);
|
|
}
|
|
}
|
|
|
|
private class CameraFlipClickListener implements OnClickListener {
|
|
@Override
|
|
public void onClick(View v) {
|
|
cameraView.flipCamera();
|
|
swapCameraButton.setImageResource(cameraView.isRearCamera() ? R.drawable.quick_camera_front
|
|
: R.drawable.quick_camera_rear);
|
|
}
|
|
}
|
|
|
|
private class FullscreenClickListener implements OnClickListener {
|
|
@Override
|
|
public void onClick(View v) {
|
|
if (drawerState != DrawerState.FULL_EXPANDED) {
|
|
setDrawerStateAndUpdate(DrawerState.FULL_EXPANDED);
|
|
} else if (isLandscape()) {
|
|
setDrawerStateAndUpdate(DrawerState.COLLAPSED);
|
|
} else {
|
|
setDrawerStateAndUpdate(DrawerState.HALF_EXPANDED);
|
|
}
|
|
}
|
|
}
|
|
}
|