AutoFocusMarker (#484)
* Create AutoFocusMarker and DefaultAutoFocusMarker * Ensure onFocusEnd is called * Add cameraAutoFocusMarker XML tag * Update docs * Fix changelog and migration guide * Fix testspull/488/head
Mattia Iavarone
6 years ago
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GitHub
parent
cd5f0a12bf
commit
ecd2cdba13
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package com.otaliastudios.cameraview.markers; |
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import android.graphics.PointF; |
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import com.otaliastudios.cameraview.CameraView; |
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import androidx.annotation.NonNull; |
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/** |
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* A marker for the autofocus operations. Receives callback when focus starts, |
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* ends successfully or failed, and can be used to draw on screen. |
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* |
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* The point coordinates are meant with respect to {@link CameraView} width and height, |
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* so a 0, 0 point means that focus is happening on the top-left visible corner. |
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*/ |
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public interface AutoFocusMarker extends Marker { |
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/** |
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* Called when the autofocus process has started. |
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* |
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* @param trigger the autofocus trigger |
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* @param point coordinates |
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*/ |
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void onAutoFocusStart(@NonNull AutoFocusTrigger trigger, @NonNull PointF point); |
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/** |
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* Called when the autofocus process has ended, and the camera converged |
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* to a new focus or failed while trying to do so. |
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* |
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* @param trigger the autofocus trigger |
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* @param successful whether the operation succeeded |
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* @param point coordinates |
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*/ |
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void onAutoFocusEnd(@NonNull AutoFocusTrigger trigger, boolean successful, @NonNull PointF point); |
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} |
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package com.otaliastudios.cameraview.markers; |
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import com.otaliastudios.cameraview.CameraView; |
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import com.otaliastudios.cameraview.gesture.GestureAction; |
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/** |
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* Gives information about what triggered the autofocus operation. |
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*/ |
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public enum AutoFocusTrigger { |
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/** |
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* Autofocus was triggered by {@link GestureAction#AUTO_FOCUS}. |
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*/ |
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GESTURE, |
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/** |
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* Autofocus was triggered by the {@link CameraView#startAutoFocus(float, float)} method. |
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*/ |
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METHOD |
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} |
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package com.otaliastudios.cameraview.markers; |
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import android.animation.Animator; |
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import android.animation.AnimatorListenerAdapter; |
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import android.content.Context; |
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import android.graphics.PointF; |
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import android.view.LayoutInflater; |
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import android.view.View; |
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import android.view.ViewGroup; |
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import com.otaliastudios.cameraview.R; |
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import androidx.annotation.NonNull; |
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import androidx.annotation.Nullable; |
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/** |
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* A default implementation of {@link AutoFocusMarker}. |
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* You can call {@link com.otaliastudios.cameraview.CameraView#setAutoFocusMarker(AutoFocusMarker)} |
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* passing in this class to have basic marker drawing. |
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*/ |
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public class DefaultAutoFocusMarker implements AutoFocusMarker { |
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private View mContainer; |
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private View mFill; |
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@Nullable |
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@Override |
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public View onAttach(@NonNull Context context, @NonNull ViewGroup container) { |
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View view = LayoutInflater.from(context).inflate(R.layout.cameraview_layout_focus_marker, container, false); |
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mContainer = view.findViewById(R.id.focusMarkerContainer); |
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mFill = view.findViewById(R.id.focusMarkerFill); |
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return view; |
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} |
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@Override |
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public void onAutoFocusStart(@NonNull AutoFocusTrigger trigger, @NonNull PointF point) { |
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if (trigger == AutoFocusTrigger.METHOD) return; |
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mContainer.clearAnimation(); |
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mFill.clearAnimation(); |
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mContainer.setScaleX(1.36f); |
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mContainer.setScaleY(1.36f); |
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mContainer.setAlpha(1f); |
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mFill.setScaleX(0); |
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mFill.setScaleY(0); |
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mFill.setAlpha(1f); |
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animate(mContainer, 1, 1, 300, 0, null); |
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animate(mFill, 1, 1, 300, 0, null); |
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} |
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@Override |
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public void onAutoFocusEnd(@NonNull AutoFocusTrigger trigger, boolean successful, @NonNull PointF point) { |
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if (trigger == AutoFocusTrigger.METHOD) return; |
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if (successful) { |
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animate(mContainer, 1, 0, 500, 0, null); |
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animate(mFill, 1, 0, 500, 0, null); |
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} else { |
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animate(mFill, 0, 0, 500, 0, null); |
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animate(mContainer, 1.36f, 1, 500, 0, new AnimatorListenerAdapter() { |
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@Override |
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public void onAnimationEnd(Animator animation) { |
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super.onAnimationEnd(animation); |
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animate(mContainer, 1.36f, 0, 200, 1000, null); |
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} |
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}); |
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} |
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} |
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private static void animate(@NonNull View view, float scale, float alpha, long duration, |
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long delay, @Nullable Animator.AnimatorListener listener) { |
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view.animate() |
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.scaleX(scale) |
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.scaleY(scale) |
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.alpha(alpha) |
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.setDuration(duration) |
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.setStartDelay(delay) |
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.setListener(listener) |
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.start(); |
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} |
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} |
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package com.otaliastudios.cameraview.markers; |
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import android.content.Context; |
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import android.view.View; |
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import android.view.ViewGroup; |
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import com.otaliastudios.cameraview.CameraView; |
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import androidx.annotation.NonNull; |
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import androidx.annotation.Nullable; |
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/** |
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* A marker is an overlay over the {@link CameraView} preview, which should be drawn |
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* at specific times during the camera lifecycle. |
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* Currently only {@link AutoFocusMarker} is available. |
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*/ |
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public interface Marker { |
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/** |
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* Marker is being attached to the CameraView. If a {@link View} is returned, |
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* it becomes part of the hierarchy and is automatically translated (if possible) |
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* to match the event place on screen, for example the point where autofocus was started |
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* by the user finger. |
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* |
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* @param context a context |
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* @param container a container |
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* @return a view or null |
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*/ |
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@Nullable |
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View onAttach(@NonNull Context context, @NonNull ViewGroup container); |
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} |
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package com.otaliastudios.cameraview.markers; |
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import android.annotation.SuppressLint; |
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import android.content.Context; |
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import android.graphics.PointF; |
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import android.view.View; |
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import android.view.ViewGroup; |
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import android.widget.FrameLayout; |
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import java.util.HashMap; |
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import androidx.annotation.NonNull; |
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import androidx.annotation.Nullable; |
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/** |
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* Manages markers and provides an hierarchy / Canvas for them. |
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* It is responsible for calling {@link Marker#onAttach(Context, ViewGroup)}. |
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*/ |
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public final class MarkerLayout extends FrameLayout { |
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public final static int TYPE_AUTOFOCUS = 1; |
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@SuppressLint("UseSparseArrays") |
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private final HashMap<Integer, View> mViews = new HashMap<>(); |
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public MarkerLayout(@NonNull Context context) { |
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super(context); |
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} |
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/** |
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* Notifies that a new marker was added, possibly replacing another one. |
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* @param type the marker type |
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* @param marker the marker |
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*/ |
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public void onMarker(int type, @Nullable Marker marker) { |
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// First check if we have a view for a previous marker of this type.
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View oldView = mViews.get(type); |
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if (oldView != null) removeView(oldView); |
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// If new marker is null, we're done.
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if (marker == null) return; |
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// Now see if we have a new view.
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View newView = marker.onAttach(getContext(), this); |
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if (newView != null) { |
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mViews.put(type, newView); |
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addView(newView); |
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} |
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} |
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/** |
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* The event that should trigger the drawing is about to be dispatched to |
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* markers. If we have a valid View, cancel any animations on it and reposition |
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* it. |
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* @param type the event type |
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* @param points the position |
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*/ |
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public void onEvent(int type, @NonNull PointF[] points) { |
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View view = mViews.get(type); |
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if (view == null) return; |
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view.clearAnimation(); |
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if (type == TYPE_AUTOFOCUS) { |
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// TODO can't be sure that getWidth and getHeight are available here.
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PointF point = points[0]; |
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float x = (int) (point.x - view.getWidth() / 2); |
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float y = (int) (point.y - view.getHeight() / 2); |
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view.setTranslationX(x); |
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view.setTranslationY(y); |
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} |
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} |
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} |
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@ -0,0 +1,41 @@ |
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package com.otaliastudios.cameraview.markers; |
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import android.content.Context; |
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import android.content.res.TypedArray; |
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import com.otaliastudios.cameraview.R; |
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import com.otaliastudios.cameraview.controls.Audio; |
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import com.otaliastudios.cameraview.controls.Facing; |
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import com.otaliastudios.cameraview.controls.Flash; |
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import com.otaliastudios.cameraview.controls.Grid; |
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import com.otaliastudios.cameraview.controls.Hdr; |
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import com.otaliastudios.cameraview.controls.Mode; |
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import com.otaliastudios.cameraview.controls.Preview; |
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import com.otaliastudios.cameraview.controls.VideoCodec; |
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import com.otaliastudios.cameraview.controls.WhiteBalance; |
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import androidx.annotation.NonNull; |
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import androidx.annotation.Nullable; |
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/** |
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* Parses markers from XML attributes. |
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*/ |
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public class MarkerParser { |
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private AutoFocusMarker autoFocusMarker = null; |
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public MarkerParser(@NonNull TypedArray array) { |
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String autoFocusName = array.getString(R.styleable.CameraView_cameraAutoFocusMarker); |
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if (autoFocusName != null) { |
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try { |
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Class<?> autoFocusClass = Class.forName(autoFocusName); |
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autoFocusMarker = (AutoFocusMarker) autoFocusClass.newInstance(); |
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} catch (Exception ignore) { } |
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} |
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} |
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@Nullable |
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public AutoFocusMarker getAutoFocusMarker() { |
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return autoFocusMarker; |
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} |
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} |
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@ -1,25 +1,17 @@ |
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<?xml version="1.0" encoding="utf-8"?> |
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<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" |
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android:layout_width="match_parent" |
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android:layout_height="match_parent"> |
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<FrameLayout |
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xmlns:android="http://schemas.android.com/apk/res/android" |
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android:id="@+id/focusMarkerContainer" |
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android:alpha="0" |
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android:layout_width="55dp" |
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android:layout_height="55dp"> |
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<ImageView |
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android:id="@+id/fill" |
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android:id="@+id/focusMarkerFill" |
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android:layout_width="match_parent" |
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android:layout_height="match_parent" |
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android:src="@drawable/focus_marker_fill" /> |
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android:src="@drawable/cameraview_focus_marker_fill" /> |
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<ImageView |
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android:layout_width="match_parent" |
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android:layout_height="match_parent" |
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android:src="@drawable/focus_marker_outline" /> |
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</FrameLayout> |
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android:src="@drawable/cameraview_focus_marker_outline" /> |
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</FrameLayout> |
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<?xml version="1.0" encoding="utf-8"?> |
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<resources> |
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<string name="cameraview_default_autofocus_marker">com.otaliastudios.cameraview.markers.DefaultAutoFocusMarker</string> |
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</resources> |
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