添加图片预览控件 可放大

sobot_widget/sobot-widget-publish-mavencentral.gradle

@@ -13,7 +13,7 @@ ext {
     PUBLISH_GROUP_ID = "com.sobot.library"        //项目包名
     PUBLISH_ARTIFACT_ID = 'widget'            //项目名
 //    PUBLISH_ARTIFACT_ID = 'widget_x'            //项目名
-    PUBLISH_VERSION = '0.2'                    //版本号
+    PUBLISH_VERSION = '0.3'                    //版本号
 }
 
 

sobot_widget/src/main/java/com/sobot/widget/image/photoview/Compat.java

+/*
+ Copyright 2011, 2012 Chris Banes.
+
+ 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.sobot.widget.image.photoview;
+
+import android.annotation.TargetApi;
+import android.os.Build.VERSION;
+import android.os.Build.VERSION_CODES;
+import android.view.View;
+
+class Compat {
+
+    private static final int SIXTY_FPS_INTERVAL = 1000 / 60;
+
+    public static void postOnAnimation(View view, Runnable runnable) {
+        if (VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN) {
+            postOnAnimationJellyBean(view, runnable);
+        } else {
+            view.postDelayed(runnable, SIXTY_FPS_INTERVAL);
+        }
+    }
+
+    @TargetApi(16)
+    private static void postOnAnimationJellyBean(View view, Runnable runnable) {
+        view.postOnAnimation(runnable);
+    }
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/CustomGestureDetector.java

+/*
+ Copyright 2011, 2012 Chris Banes.
+ <p/>
+ 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
+ <p/>
+ http://www.apache.org/licenses/LICENSE-2.0
+ <p/>
+ 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.sobot.widget.image.photoview;
+
+import android.content.Context;
+import android.view.MotionEvent;
+import android.view.ScaleGestureDetector;
+import android.view.VelocityTracker;
+import android.view.ViewConfiguration;
+
+/**
+ * Does a whole lot of gesture detecting.
+ */
+class CustomGestureDetector {
+
+    private static final int INVALID_POINTER_ID = -1;
+
+    private int mActivePointerId = INVALID_POINTER_ID;
+    private int mActivePointerIndex = 0;
+    private final ScaleGestureDetector mDetector;
+
+    private VelocityTracker mVelocityTracker;
+    private boolean mIsDragging;
+    private float mLastTouchX;
+    private float mLastTouchY;
+    private final float mTouchSlop;
+    private final float mMinimumVelocity;
+    private OnGestureListener mListener;
+
+    CustomGestureDetector(Context context, OnGestureListener listener) {
+        final ViewConfiguration configuration = ViewConfiguration
+                .get(context);
+        mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
+        mTouchSlop = configuration.getScaledTouchSlop();
+
+        mListener = listener;
+        ScaleGestureDetector.OnScaleGestureListener mScaleListener = new ScaleGestureDetector.OnScaleGestureListener() {
+            private float lastFocusX, lastFocusY = 0;
+
+            @Override
+            public boolean onScale(ScaleGestureDetector detector) {
+                float scaleFactor = detector.getScaleFactor();
+
+                if (Float.isNaN(scaleFactor) || Float.isInfinite(scaleFactor))
+                    return false;
+             
+                if (scaleFactor >= 0) {
+                    mListener.onScale(scaleFactor,
+                            detector.getFocusX(),
+                            detector.getFocusY(),
+                            detector.getFocusX() - lastFocusX,
+                            detector.getFocusY() - lastFocusY
+                    );
+                    lastFocusX = detector.getFocusX();
+                    lastFocusY = detector.getFocusY();
+                }
+                return true;
+            }
+
+            @Override
+            public boolean onScaleBegin(ScaleGestureDetector detector) {
+                lastFocusX = detector.getFocusX();
+                lastFocusY = detector.getFocusY();
+                return true;
+            }
+
+            @Override
+            public void onScaleEnd(ScaleGestureDetector detector) {
+                // NO-OP
+            }
+        };
+        mDetector = new ScaleGestureDetector(context, mScaleListener);
+    }
+
+    private float getActiveX(MotionEvent ev) {
+        try {
+            return ev.getX(mActivePointerIndex);
+        } catch (Exception e) {
+            return ev.getX();
+        }
+    }
+
+    private float getActiveY(MotionEvent ev) {
+        try {
+            return ev.getY(mActivePointerIndex);
+        } catch (Exception e) {
+            return ev.getY();
+        }
+    }
+
+    public boolean isScaling() {
+        return mDetector.isInProgress();
+    }
+
+    public boolean isDragging() {
+        return mIsDragging;
+    }
+
+    public boolean onTouchEvent(MotionEvent ev) {
+        try {
+            mDetector.onTouchEvent(ev);
+            return processTouchEvent(ev);
+        } catch (IllegalArgumentException e) {
+            // Fix for support lib bug, happening when onDestroy is called
+            return true;
+        }
+    }
+
+    private boolean processTouchEvent(MotionEvent ev) {
+        final int action = ev.getAction();
+        switch (action & MotionEvent.ACTION_MASK) {
+            case MotionEvent.ACTION_DOWN:
+                mActivePointerId = ev.getPointerId(0);
+
+                mVelocityTracker = VelocityTracker.obtain();
+                if (null != mVelocityTracker) {
+                    mVelocityTracker.addMovement(ev);
+                }
+
+                mLastTouchX = getActiveX(ev);
+                mLastTouchY = getActiveY(ev);
+                mIsDragging = false;
+                break;
+            case MotionEvent.ACTION_MOVE:
+                final float x = getActiveX(ev);
+                final float y = getActiveY(ev);
+                final float dx = x - mLastTouchX, dy = y - mLastTouchY;
+
+                if (!mIsDragging) {
+                    // Use Pythagoras to see if drag length is larger than
+                    // touch slop
+                    mIsDragging = Math.sqrt((dx * dx) + (dy * dy)) >= mTouchSlop;
+                }
+
+                if (mIsDragging) {
+                    mListener.onDrag(dx, dy);
+                    mLastTouchX = x;
+                    mLastTouchY = y;
+
+                    if (null != mVelocityTracker) {
+                        mVelocityTracker.addMovement(ev);
+                    }
+                }
+                break;
+            case MotionEvent.ACTION_CANCEL:
+                mActivePointerId = INVALID_POINTER_ID;
+                // Recycle Velocity Tracker
+                if (null != mVelocityTracker) {
+                    mVelocityTracker.recycle();
+                    mVelocityTracker = null;
+                }
+                break;
+            case MotionEvent.ACTION_UP:
+                mActivePointerId = INVALID_POINTER_ID;
+                if (mIsDragging) {
+                    if (null != mVelocityTracker) {
+                        mLastTouchX = getActiveX(ev);
+                        mLastTouchY = getActiveY(ev);
+
+                        // Compute velocity within the last 1000ms
+                        mVelocityTracker.addMovement(ev);
+                        mVelocityTracker.computeCurrentVelocity(1000);
+
+                        final float vX = mVelocityTracker.getXVelocity(), vY = mVelocityTracker
+                                .getYVelocity();
+
+                        // If the velocity is greater than minVelocity, call
+                        // listener
+                        if (Math.max(Math.abs(vX), Math.abs(vY)) >= mMinimumVelocity) {
+                            mListener.onFling(mLastTouchX, mLastTouchY, -vX,
+                                    -vY);
+                        }
+                    }
+                }
+
+                // Recycle Velocity Tracker
+                if (null != mVelocityTracker) {
+                    mVelocityTracker.recycle();
+                    mVelocityTracker = null;
+                }
+                break;
+            case MotionEvent.ACTION_POINTER_UP:
+                final int pointerIndex = Util.getPointerIndex(ev.getAction());
+                final int pointerId = ev.getPointerId(pointerIndex);
+                if (pointerId == mActivePointerId) {
+                    // This was our active pointer going up. Choose a new
+                    // active pointer and adjust accordingly.
+                    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
+                    mActivePointerId = ev.getPointerId(newPointerIndex);
+                    mLastTouchX = ev.getX(newPointerIndex);
+                    mLastTouchY = ev.getY(newPointerIndex);
+                }
+                break;
+        }
+
+        mActivePointerIndex = ev
+                .findPointerIndex(mActivePointerId != INVALID_POINTER_ID ? mActivePointerId
+                        : 0);
+        return true;
+    }
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnGestureListener.java

+/*
+ Copyright 2011, 2012 Chris Banes.
+
+ 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.sobot.widget.image.photoview;
+
+interface OnGestureListener {
+
+    void onDrag(float dx, float dy);
+
+    void onFling(float startX, float startY, float velocityX,
+                 float velocityY);
+
+    void onScale(float scaleFactor, float focusX, float focusY);
+
+    void onScale(float scaleFactor, float focusX, float focusY, float dx, float dy);
+}
\ No newline at end of file

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnMatrixChangedListener.java

+package com.sobot.widget.image.photoview;
+
+import android.graphics.RectF;
+
+/**
+ * Interface definition for a callback to be invoked when the internal Matrix has changed for
+ * this View.
+ */
+public interface OnMatrixChangedListener {
+
+    /**
+     * Callback for when the Matrix displaying the Drawable has changed. This could be because
+     * the View's bounds have changed, or the user has zoomed.
+     *
+     * @param rect - Rectangle displaying the Drawable's new bounds.
+     */
+    void onMatrixChanged(RectF rect);
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnOutsidePhotoTapListener.java

+package com.sobot.widget.image.photoview;
+
+import android.widget.ImageView;
+
+/**
+ * Callback when the user tapped outside of the photo
+ */
+public interface OnOutsidePhotoTapListener {
+
+    /**
+     * The outside of the photo has been tapped
+     */
+    void onOutsidePhotoTap(ImageView imageView);
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnPhotoTapListener.java

+package com.sobot.widget.image.photoview;
+
+import android.widget.ImageView;
+
+/**
+ * A callback to be invoked when the Photo is tapped with a single
+ * tap.
+ */
+public interface OnPhotoTapListener {
+
+    /**
+     * A callback to receive where the user taps on a photo. You will only receive a callback if
+     * the user taps on the actual photo, tapping on 'whitespace' will be ignored.
+     *
+     * @param view ImageView the user tapped.
+     * @param x    where the user tapped from the of the Drawable, as percentage of the
+     *             Drawable width.
+     * @param y    where the user tapped from the top of the Drawable, as percentage of the
+     *             Drawable height.
+     */
+    void onPhotoTap(ImageView view, float x, float y);
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnScaleChangedListener.java

+package com.sobot.widget.image.photoview;
+
+
+/**
+ * Interface definition for callback to be invoked when attached ImageView scale changes
+ */
+public interface OnScaleChangedListener {
+
+    /**
+     * Callback for when the scale changes
+     *
+     * @param scaleFactor the scale factor (less than 1 for zoom out, greater than 1 for zoom in)
+     * @param focusX      focal point X position
+     * @param focusY      focal point Y position
+     */
+    void onScaleChange(float scaleFactor, float focusX, float focusY);
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnSingleFlingListener.java

+package com.sobot.widget.image.photoview;
+
+import android.view.MotionEvent;
+
+/**
+ * A callback to be invoked when the ImageView is flung with a single
+ * touch
+ */
+public interface OnSingleFlingListener {
+
+    /**
+     * A callback to receive where the user flings on a ImageView. You will receive a callback if
+     * the user flings anywhere on the view.
+     *
+     * @param e1        MotionEvent the user first touch.
+     * @param e2        MotionEvent the user last touch.
+     * @param velocityX distance of user's horizontal fling.
+     * @param velocityY distance of user's vertical fling.
+     */
+    boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY);
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnViewDragListener.java

+package com.sobot.widget.image.photoview;
+
+/**
+ * Interface definition for a callback to be invoked when the photo is experiencing a drag event
+ */
+public interface OnViewDragListener {
+
+    /**
+     * Callback for when the photo is experiencing a drag event. This cannot be invoked when the
+     * user is scaling.
+     *
+     * @param dx The change of the coordinates in the x-direction
+     * @param dy The change of the coordinates in the y-direction
+     */
+    void onDrag(float dx, float dy);
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/OnViewTapListener.java

+package com.sobot.widget.image.photoview;
+
+import android.view.View;
+
+public interface OnViewTapListener {
+
+    /**
+     * A callback to receive where the user taps on a ImageView. You will receive a callback if
+     * the user taps anywhere on the view, tapping on 'whitespace' will not be ignored.
+     *
+     * @param view - View the user tapped.
+     * @param x    - where the user tapped from the left of the View.
+     * @param y    - where the user tapped from the top of the View.
+     */
+    void onViewTap(View view, float x, float y);
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/SobotPhotoView.java

+/*
+ Copyright 2011, 2012 Chris Banes.
+ <p>
+ 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
+ <p>
+ http://www.apache.org/licenses/LICENSE-2.0
+ <p>
+ 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.sobot.widget.image.photoview;
+
+import android.content.Context;
+import android.graphics.Matrix;
+import android.graphics.RectF;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.support.v7.widget.AppCompatImageView;
+import android.util.AttributeSet;
+import android.view.GestureDetector;
+
+public class SobotPhotoView extends AppCompatImageView {
+
+    private PhotoViewAttacher attacher;
+    private ScaleType pendingScaleType;
+
+    public SobotPhotoView(Context context) {
+        this(context, null);
+    }
+
+    public SobotPhotoView(Context context, AttributeSet attr) {
+        this(context, attr, 0);
+    }
+
+    public SobotPhotoView(Context context, AttributeSet attr, int defStyle) {
+        super(context, attr, defStyle);
+        init();
+    }
+
+    private void init() {
+        attacher = new PhotoViewAttacher(this);
+        //We always pose as a Matrix scale type, though we can change to another scale type
+        //via the attacher
+        super.setScaleType(ScaleType.MATRIX);
+        //apply the previously applied scale type
+        if (pendingScaleType != null) {
+            setScaleType(pendingScaleType);
+            pendingScaleType = null;
+        }
+    }
+
+    /**
+     * Get the current {@link PhotoViewAttacher} for this view. Be wary of holding on to references
+     * to this attacher, as it has a reference to this view, which, if a reference is held in the
+     * wrong place, can cause memory leaks.
+     *
+     * @return the attacher.
+     */
+    public PhotoViewAttacher getAttacher() {
+        return attacher;
+    }
+
+    @Override
+    public ScaleType getScaleType() {
+        return attacher.getScaleType();
+    }
+
+    @Override
+    public Matrix getImageMatrix() {
+        return attacher.getImageMatrix();
+    }
+
+    @Override
+    public void setOnLongClickListener(OnLongClickListener l) {
+        attacher.setOnLongClickListener(l);
+    }
+
+    @Override
+    public void setOnClickListener(OnClickListener l) {
+        attacher.setOnClickListener(l);
+    }
+
+    @Override
+    public void setScaleType(ScaleType scaleType) {
+        if (attacher == null) {
+            pendingScaleType = scaleType;
+        } else {
+            attacher.setScaleType(scaleType);
+        }
+    }
+
+    @Override
+    public void setImageDrawable(Drawable drawable) {
+        super.setImageDrawable(drawable);
+        // setImageBitmap calls through to this method
+        if (attacher != null) {
+            attacher.update();
+        }
+    }
+
+    @Override
+    public void setImageResource(int resId) {
+        super.setImageResource(resId);
+        if (attacher != null) {
+            attacher.update();
+        }
+    }
+
+    @Override
+    public void setImageURI(Uri uri) {
+        super.setImageURI(uri);
+        if (attacher != null) {
+            attacher.update();
+        }
+    }
+
+    @Override
+    protected boolean setFrame(int l, int t, int r, int b) {
+        boolean changed = super.setFrame(l, t, r, b);
+        if (changed) {
+            attacher.update();
+        }
+        return changed;
+    }
+
+    public void setRotationTo(float rotationDegree) {
+        attacher.setRotationTo(rotationDegree);
+    }
+
+    public void setRotationBy(float rotationDegree) {
+        attacher.setRotationBy(rotationDegree);
+    }
+
+    public boolean isZoomable() {
+        return attacher.isZoomable();
+    }
+
+    public void setZoomable(boolean zoomable) {
+        attacher.setZoomable(zoomable);
+    }
+
+    public RectF getDisplayRect() {
+        return attacher.getDisplayRect();
+    }
+
+    public void getDisplayMatrix(Matrix matrix) {
+        attacher.getDisplayMatrix(matrix);
+    }
+
+    @SuppressWarnings("UnusedReturnValue")
+    public boolean setDisplayMatrix(Matrix finalRectangle) {
+        return attacher.setDisplayMatrix(finalRectangle);
+    }
+
+    public void getSuppMatrix(Matrix matrix) {
+        attacher.getSuppMatrix(matrix);
+    }
+
+    public boolean setSuppMatrix(Matrix matrix) {
+        return attacher.setDisplayMatrix(matrix);
+    }
+
+    public float getMinimumScale() {
+        return attacher.getMinimumScale();
+    }
+
+    public float getMediumScale() {
+        return attacher.getMediumScale();
+    }
+
+    public float getMaximumScale() {
+        return attacher.getMaximumScale();
+    }
+
+    public float getScale() {
+        return attacher.getScale();
+    }
+
+    public void setAllowParentInterceptOnEdge(boolean allow) {
+        attacher.setAllowParentInterceptOnEdge(allow);
+    }
+
+    public void setMinimumScale(float minimumScale) {
+        attacher.setMinimumScale(minimumScale);
+    }
+
+    public void setMediumScale(float mediumScale) {
+        attacher.setMediumScale(mediumScale);
+    }
+
+    public void setMaximumScale(float maximumScale) {
+        attacher.setMaximumScale(maximumScale);
+    }
+
+    public void setScaleLevels(float minimumScale, float mediumScale, float maximumScale) {
+        attacher.setScaleLevels(minimumScale, mediumScale, maximumScale);
+    }
+
+    public void setOnMatrixChangeListener(OnMatrixChangedListener listener) {
+        attacher.setOnMatrixChangeListener(listener);
+    }
+
+    public void setOnPhotoTapListener(OnPhotoTapListener listener) {
+        attacher.setOnPhotoTapListener(listener);
+    }
+
+    public void setOnOutsidePhotoTapListener(OnOutsidePhotoTapListener listener) {
+        attacher.setOnOutsidePhotoTapListener(listener);
+    }
+
+    public void setOnViewTapListener(OnViewTapListener listener) {
+        attacher.setOnViewTapListener(listener);
+    }
+
+    public void setOnViewDragListener(OnViewDragListener listener) {
+        attacher.setOnViewDragListener(listener);
+    }
+
+    public void setScale(float scale) {
+        attacher.setScale(scale);
+    }
+
+    public void setScale(float scale, boolean animate) {
+        attacher.setScale(scale, animate);
+    }
+
+    public void setScale(float scale, float focalX, float focalY, boolean animate) {
+        attacher.setScale(scale, focalX, focalY, animate);
+    }
+
+    public void setZoomTransitionDuration(int milliseconds) {
+        attacher.setZoomTransitionDuration(milliseconds);
+    }
+
+    public void setOnDoubleTapListener(GestureDetector.OnDoubleTapListener onDoubleTapListener) {
+        attacher.setOnDoubleTapListener(onDoubleTapListener);
+    }
+
+    public void setOnScaleChangeListener(OnScaleChangedListener onScaleChangedListener) {
+        attacher.setOnScaleChangeListener(onScaleChangedListener);
+    }
+
+    public void setOnSingleFlingListener(OnSingleFlingListener onSingleFlingListener) {
+        attacher.setOnSingleFlingListener(onSingleFlingListener);
+    }
+}

sobot_widget/src/main/java/com/sobot/widget/image/photoview/Util.java

+package com.sobot.widget.image.photoview;
+
+import android.view.MotionEvent;
+import android.widget.ImageView;
+
+class Util {
+
+    static void checkZoomLevels(float minZoom, float midZoom,
+                                float maxZoom) {
+        if (minZoom >= midZoom) {
+            throw new IllegalArgumentException(
+                    "Minimum zoom has to be less than Medium zoom. Call setMinimumZoom() with a more appropriate value");
+        } else if (midZoom >= maxZoom) {
+            throw new IllegalArgumentException(
+                    "Medium zoom has to be less than Maximum zoom. Call setMaximumZoom() with a more appropriate value");
+        }
+    }
+
+    static boolean hasDrawable(ImageView imageView) {
+        return imageView.getDrawable() != null;
+    }
+
+    static boolean isSupportedScaleType(final ImageView.ScaleType scaleType) {
+        if (scaleType == null) {
+            return false;
+        }
+        switch (scaleType) {
+            case MATRIX:
+                throw new IllegalStateException("Matrix scale type is not supported");
+        }
+        return true;
+    }
+
+    static int getPointerIndex(int action) {
+        return (action & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
+    }
+}

sobot_widget/src/main/res/values/attrs.xml

@@ -179,4 +179,13 @@
 
     </declare-styleable>
 
+    <declare-styleable name="SobotSubsamplingScaleImageView">
+        <attr name="sobot_src" format="reference"/>
+        <attr name="sobot_assetName" format="string"/>
+        <attr name="sobot_panEnabled" format="boolean"/>
+        <attr name="sobot_zoomEnabled" format="boolean"/>
+        <attr name="sobot_quickScaleEnabled" format="boolean"/>
+        <attr name="sobot_tileBackgroundColor" format="color"/>
+    </declare-styleable>
+
 </resources>
\ No newline at end of file