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The source code is released under:
Apache License
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package com.makeramen; /*from w w w. j a v a 2 s. c o m*/ import android.content.res.ColorStateList; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.BitmapShader; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.ColorFilter; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.Shader; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.LayerDrawable; import android.util.Log; import android.widget.ImageView.ScaleType; @SuppressWarnings("UnusedDeclaration") public class RoundedDrawable extends Drawable { public static final String TAG = "RoundedDrawable"; public static final int DEFAULT_BORDER_COLOR = Color.BLACK; private final RectF mBounds = new RectF(); private final RectF mDrawableRect = new RectF(); private final RectF mBitmapRect = new RectF(); private final BitmapShader mBitmapShader; private final Paint mBitmapPaint; private final int mBitmapWidth; private final int mBitmapHeight; private final RectF mBorderRect = new RectF(); private final Paint mBorderPaint; private final Matrix mShaderMatrix = new Matrix(); private float mCornerRadius = 0; private boolean mOval = false; private float mBorderWidth = 0; private ColorStateList mBorderColor = ColorStateList.valueOf(DEFAULT_BORDER_COLOR); private ScaleType mScaleType = ScaleType.FIT_CENTER; public RoundedDrawable(Bitmap bitmap) { mBitmapWidth = bitmap.getWidth(); mBitmapHeight = bitmap.getHeight(); mBitmapRect.set(0, 0, mBitmapWidth, mBitmapHeight); mBitmapShader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP); mBitmapShader.setLocalMatrix(mShaderMatrix); mBitmapPaint = new Paint(); mBitmapPaint.setStyle(Paint.Style.FILL); mBitmapPaint.setAntiAlias(true); mBitmapPaint.setShader(mBitmapShader); mBorderPaint = new Paint(); mBorderPaint.setStyle(Paint.Style.STROKE); mBorderPaint.setAntiAlias(true); mBorderPaint.setColor(mBorderColor.getColorForState(getState(), DEFAULT_BORDER_COLOR)); mBorderPaint.setStrokeWidth(mBorderWidth); } public static RoundedDrawable fromBitmap(Bitmap bitmap) { if (bitmap != null) { return new RoundedDrawable(bitmap); } else { return null; } } public static Drawable fromDrawable(Drawable drawable) { if (drawable != null) { if (drawable instanceof RoundedDrawable) { // just return if it's already a RoundedDrawable return drawable; } else if (drawable instanceof LayerDrawable) { LayerDrawable ld = (LayerDrawable) drawable; int num = ld.getNumberOfLayers(); // loop through layers to and change to RoundedDrawables if possible for (int i = 0; i < num; i++) { Drawable d = ld.getDrawable(i); ld.setDrawableByLayerId(ld.getId(i), fromDrawable(d)); } return ld; } // try to get a bitmap from the drawable and Bitmap bm = drawableToBitmap(drawable); if (bm != null) { return new RoundedDrawable(bm); } else { Log.w(TAG, "Failed to create bitmap from drawable!"); } } return drawable; } public static Bitmap drawableToBitmap(Drawable drawable) { if (drawable instanceof BitmapDrawable) { return ((BitmapDrawable) drawable).getBitmap(); } Bitmap bitmap; int width = Math.max(drawable.getIntrinsicWidth(), 1); int height = Math.max(drawable.getIntrinsicHeight(), 1); try { bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight()); drawable.draw(canvas); } catch (Exception e) { e.printStackTrace(); bitmap = null; } return bitmap; } @Override public boolean isStateful() { return mBorderColor.isStateful(); } @Override protected boolean onStateChange(int[] state) { int newColor = mBorderColor.getColorForState(state, 0); if (mBorderPaint.getColor() != newColor) { mBorderPaint.setColor(newColor); return true; } else { return super.onStateChange(state); } } private void updateShaderMatrix() { float scale; float dx; float dy; switch (mScaleType) { case CENTER: mBorderRect.set(mBounds); mBorderRect.inset((mBorderWidth) / 2, (mBorderWidth) / 2); mShaderMatrix.set(null); mShaderMatrix.setTranslate((int) ((mBorderRect.width() - mBitmapWidth) * 0.5f + 0.5f), (int) ((mBorderRect.height() - mBitmapHeight) * 0.5f + 0.5f)); break; case CENTER_CROP: mBorderRect.set(mBounds); mBorderRect.inset((mBorderWidth) / 2, (mBorderWidth) / 2); mShaderMatrix.set(null); dx = 0; dy = 0; if (mBitmapWidth * mBorderRect.height() > mBorderRect.width() * mBitmapHeight) { scale = mBorderRect.height() / (float) mBitmapHeight; dx = (mBorderRect.width() - mBitmapWidth * scale) * 0.5f; } else { scale = mBorderRect.width() / (float) mBitmapWidth; dy = (mBorderRect.height() - mBitmapHeight * scale) * 0.5f; } mShaderMatrix.setScale(scale, scale); mShaderMatrix.postTranslate((int) (dx + 0.5f) + mBorderWidth, (int) (dy + 0.5f) + mBorderWidth); break; case CENTER_INSIDE: mShaderMatrix.set(null); if (mBitmapWidth <= mBounds.width() && mBitmapHeight <= mBounds.height()) { scale = 1.0f; } else { scale = Math.min(mBounds.width() / (float) mBitmapWidth, mBounds.height() / (float) mBitmapHeight); } dx = (int) ((mBounds.width() - mBitmapWidth * scale) * 0.5f + 0.5f); dy = (int) ((mBounds.height() - mBitmapHeight * scale) * 0.5f + 0.5f); mShaderMatrix.setScale(scale, scale); mShaderMatrix.postTranslate(dx, dy); mBorderRect.set(mBitmapRect); mShaderMatrix.mapRect(mBorderRect); mBorderRect.inset((mBorderWidth) / 2, (mBorderWidth) / 2); mShaderMatrix.setRectToRect(mBitmapRect, mBorderRect, Matrix.ScaleToFit.FILL); break; default: case FIT_CENTER: mBorderRect.set(mBitmapRect); mShaderMatrix.setRectToRect(mBitmapRect, mBounds, Matrix.ScaleToFit.CENTER); mShaderMatrix.mapRect(mBorderRect); mBorderRect.inset((mBorderWidth) / 2, (mBorderWidth) / 2); mShaderMatrix.setRectToRect(mBitmapRect, mBorderRect, Matrix.ScaleToFit.FILL); break; case FIT_END: mBorderRect.set(mBitmapRect); mShaderMatrix.setRectToRect(mBitmapRect, mBounds, Matrix.ScaleToFit.END); mShaderMatrix.mapRect(mBorderRect); mBorderRect.inset((mBorderWidth) / 2, (mBorderWidth) / 2); mShaderMatrix.setRectToRect(mBitmapRect, mBorderRect, Matrix.ScaleToFit.FILL); break; case FIT_START: mBorderRect.set(mBitmapRect); mShaderMatrix.setRectToRect(mBitmapRect, mBounds, Matrix.ScaleToFit.START); mShaderMatrix.mapRect(mBorderRect); mBorderRect.inset((mBorderWidth) / 2, (mBorderWidth) / 2); mShaderMatrix.setRectToRect(mBitmapRect, mBorderRect, Matrix.ScaleToFit.FILL); break; case FIT_XY: mBorderRect.set(mBounds); mBorderRect.inset((mBorderWidth) / 2, (mBorderWidth) / 2); mShaderMatrix.set(null); mShaderMatrix.setRectToRect(mBitmapRect, mBorderRect, Matrix.ScaleToFit.FILL); break; } mDrawableRect.set(mBorderRect); mBitmapShader.setLocalMatrix(mShaderMatrix); } @Override protected void onBoundsChange(Rect bounds) { super.onBoundsChange(bounds); mBounds.set(bounds); updateShaderMatrix(); } @Override public void draw(Canvas canvas) { if (mOval) { if (mBorderWidth > 0) { canvas.drawOval(mDrawableRect, mBitmapPaint); canvas.drawOval(mBorderRect, mBorderPaint); } else { canvas.drawOval(mDrawableRect, mBitmapPaint); } } else { if (mBorderWidth > 0) { canvas.drawRoundRect(mDrawableRect, Math.max(mCornerRadius, 0), Math.max(mCornerRadius, 0), mBitmapPaint); canvas.drawRoundRect(mBorderRect, mCornerRadius, mCornerRadius, mBorderPaint); } else { canvas.drawRoundRect(mDrawableRect, mCornerRadius, mCornerRadius, mBitmapPaint); } } } @Override public int getOpacity() { return PixelFormat.TRANSLUCENT; } @Override public void setAlpha(int alpha) { mBitmapPaint.setAlpha(alpha); invalidateSelf(); } @Override public void setColorFilter(ColorFilter cf) { mBitmapPaint.setColorFilter(cf); invalidateSelf(); } @Override public void setDither(boolean dither) { mBitmapPaint.setDither(dither); invalidateSelf(); } @Override public void setFilterBitmap(boolean filter) { mBitmapPaint.setFilterBitmap(filter); invalidateSelf(); } @Override public int getIntrinsicWidth() { return mBitmapWidth; } @Override public int getIntrinsicHeight() { return mBitmapHeight; } public float getCornerRadius() { return mCornerRadius; } public RoundedDrawable setCornerRadius(float radius) { mCornerRadius = radius; return this; } public float getBorderWidth() { return mBorderWidth; } public RoundedDrawable setBorderWidth(int width) { mBorderWidth = width; mBorderPaint.setStrokeWidth(mBorderWidth); return this; } public int getBorderColor() { return mBorderColor.getDefaultColor(); } public RoundedDrawable setBorderColor(int color) { return setBorderColors(ColorStateList.valueOf(color)); } public ColorStateList getBorderColors() { return mBorderColor; } public RoundedDrawable setBorderColors(ColorStateList colors) { mBorderColor = colors != null ? colors : ColorStateList.valueOf(0); mBorderPaint.setColor(mBorderColor.getColorForState(getState(), DEFAULT_BORDER_COLOR)); return this; } public boolean isOval() { return mOval; } public RoundedDrawable setOval(boolean oval) { mOval = oval; return this; } public ScaleType getScaleType() { return mScaleType; } public RoundedDrawable setScaleType(ScaleType scaleType) { if (scaleType == null) { scaleType = ScaleType.FIT_CENTER; } if (mScaleType != scaleType) { mScaleType = scaleType; updateShaderMatrix(); } return this; } public Bitmap toBitmap() { return drawableToBitmap(this); } }