hzuapps#4 hzuapps#324 第四次实验

students/soft1714080902219/app/src/main/AndroidManifest.xml

@@ -4,7 +4,7 @@
 
     <application
         android:allowBackup="true"
-        android:icon="@mipmap/ic_launcher"
+        android:icon="@mipmap/logo"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"

students/soft1714080902219/app/src/main/java/edu/hzuapps/androidlabs/Soft1714080902219/CircleImageView.java

@@ -0,0 +1,239 @@
+package edu.hzuapps.androidlabs.Soft1714080902219;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Bitmap;
+import android.graphics.BitmapShader;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.Shader;
+import android.graphics.SweepGradient;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.text.TextPaint;
+import android.util.AttributeSet;
+import android.util.FloatMath;
+import android.widget.ImageView;
+
+public class CircleImageView extends android.support.v7.widget.AppCompatImageView {
+
+
+    private static final ScaleType SCALE_TYPE = ScaleType.CENTER_CROP;
+
+    private static final Bitmap.Config BITMAP_CONFIG = Bitmap.Config.ARGB_8888;
+    private static final int COLORDRAWABLE_DIMENSION = 1;
+
+    private static final int DEFAULT_BORDER_WIDTH = 0;
+    private static final int DEFAULT_BORDER_COLOR = Color.BLACK;
+
+    private final RectF mDrawableRect = new RectF();
+    private final RectF mBorderRect = new RectF();
+
+    private final Matrix mShaderMatrix = new Matrix();
+    private final Paint mBitmapPaint = new Paint();
+    private final Paint mBorderPaint = new Paint();
+
+    private int mBorderColor = DEFAULT_BORDER_COLOR;
+    private int mBorderWidth = DEFAULT_BORDER_WIDTH;
+
+    private Bitmap mBitmap;
+    private BitmapShader mBitmapShader;
+    private int mBitmapWidth;
+    private int mBitmapHeight;
+
+    private float mDrawableRadius;
+    private float mBorderRadius;
+
+    private boolean mReady;
+    private boolean mSetupPending;
+
+    public CircleImageView(Context context) {
+        super(context);
+    }
+
+    public CircleImageView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public CircleImageView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        super.setScaleType(SCALE_TYPE);
+
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CircleImageView, defStyle, 0);
+
+        mBorderWidth = a.getDimensionPixelSize(R.styleable.CircleImageView_border_width, DEFAULT_BORDER_WIDTH);
+        mBorderColor = a.getColor(R.styleable.CircleImageView_border_color, DEFAULT_BORDER_COLOR);
+
+        a.recycle();
+
+        mReady = true;
+
+        if (mSetupPending) {
+            setup();
+            mSetupPending = false;
+        }
+    }
+
+    @Override
+    public ScaleType getScaleType() {
+        return SCALE_TYPE;
+    }
+
+    @Override
+    public void setScaleType(ScaleType scaleType) {
+        if (scaleType != SCALE_TYPE) {
+            throw new IllegalArgumentException(String.format("ScaleType %s not supported.", scaleType));
+        }
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        if (getDrawable() == null) {
+            return;
+        }
+
+        canvas.drawCircle(getWidth() / 2, getHeight() / 2, mDrawableRadius, mBitmapPaint);
+        canvas.drawCircle(getWidth() / 2, getHeight() / 2, mBorderRadius, mBorderPaint);
+    }
+
+    @Override
+    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+        super.onSizeChanged(w, h, oldw, oldh);
+        setup();
+    }
+
+    public int getBorderColor() {
+        return mBorderColor;
+    }
+
+    public void setBorderColor(int borderColor) {
+        if (borderColor == mBorderColor) {
+            return;
+        }
+
+        mBorderColor = borderColor;
+        mBorderPaint.setColor(mBorderColor);
+        invalidate();
+    }
+
+    public int getBorderWidth() {
+        return mBorderWidth;
+    }
+
+    public void setBorderWidth(int borderWidth) {
+        if (borderWidth == mBorderWidth) {
+            return;
+        }
+
+        mBorderWidth = borderWidth;
+        setup();
+    }
+
+    @Override
+    public void setImageBitmap(Bitmap bm) {
+        super.setImageBitmap(bm);
+        mBitmap = bm;
+        setup();
+    }
+
+    @Override
+    public void setImageDrawable(Drawable drawable) {
+        super.setImageDrawable(drawable);
+        mBitmap = getBitmapFromDrawable(drawable);
+        setup();
+    }
+
+    @Override
+    public void setImageResource(int resId) {
+        super.setImageResource(resId);
+        mBitmap = getBitmapFromDrawable(getDrawable());
+        setup();
+    }
+
+    private Bitmap getBitmapFromDrawable(Drawable drawable) {
+        if (drawable == null) {
+            return null;
+        }
+
+        if (drawable instanceof BitmapDrawable) {
+            return ((BitmapDrawable) drawable).getBitmap();
+        }
+
+        try {
+            Bitmap bitmap;
+
+            if (drawable instanceof ColorDrawable) {
+                bitmap = Bitmap.createBitmap(COLORDRAWABLE_DIMENSION, COLORDRAWABLE_DIMENSION, BITMAP_CONFIG);
+            } else {
+                bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), BITMAP_CONFIG);
+            }
+
+            Canvas canvas = new Canvas(bitmap);
+            drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
+            drawable.draw(canvas);
+            return bitmap;
+        } catch (OutOfMemoryError e) {
+            return null;
+        }
+    }
+
+    private void setup() {
+        if (!mReady) {
+            mSetupPending = true;
+            return;
+        }
+
+        if (mBitmap == null) {
+            return;
+        }
+
+        mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
+
+        mBitmapPaint.setAntiAlias(true);
+        mBitmapPaint.setShader(mBitmapShader);
+
+        mBorderPaint.setStyle(Paint.Style.STROKE);
+        mBorderPaint.setAntiAlias(true);
+        mBorderPaint.setColor(mBorderColor);
+        mBorderPaint.setStrokeWidth(mBorderWidth);
+
+        mBitmapHeight = mBitmap.getHeight();
+        mBitmapWidth = mBitmap.getWidth();
+
+        mBorderRect.set(0, 0, getWidth(), getHeight());
+        mBorderRadius = Math.min((mBorderRect.height() - mBorderWidth) / 2, (mBorderRect.width() - mBorderWidth) / 2);
+
+        mDrawableRect.set(mBorderWidth, mBorderWidth, mBorderRect.width() - mBorderWidth, mBorderRect.height() - mBorderWidth);
+        mDrawableRadius = Math.min(mDrawableRect.height() / 2, mDrawableRect.width() / 2);
+
+        updateShaderMatrix();
+        invalidate();
+    }
+
+    private void updateShaderMatrix() {
+        float scale;
+        float dx = 0;
+        float dy = 0;
+
+        mShaderMatrix.set(null);
+
+        if (mBitmapWidth * mDrawableRect.height() > mDrawableRect.width() * mBitmapHeight) {
+            scale = mDrawableRect.height() / (float) mBitmapHeight;
+            dx = (mDrawableRect.width() - mBitmapWidth * scale) * 0.5f;
+        } else {
+            scale = mDrawableRect.width() / (float) mBitmapWidth;
+            dy = (mDrawableRect.height() - mBitmapHeight * scale) * 0.5f;
+        }
+
+        mShaderMatrix.setScale(scale, scale);
+        mShaderMatrix.postTranslate((int) (dx + 0.5f) + mBorderWidth, (int) (dy + 0.5f) + mBorderWidth);
+
+        mBitmapShader.setLocalMatrix(mShaderMatrix);
+    }
+}