Java Code Examples for android.graphics.Picture#draw()

/**
 * 截取所有网页内容到 Bitmap
 *
 * @return Bitmap
 */
Bitmap genCaptureBitmap() throws OutOfMemoryError {
    // @todo Future versions of WebView may not support use on other threads.
    try {
        Picture picture = getWebView().capturePicture();
        int height = picture.getHeight(), width = picture.getWidth();
        if (height == 0 || width == 0) {
            return null;
        }
        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        picture.draw(canvas);
        return bitmap;
    } catch (NullPointerException e) {
        return null;
    }
}
 

@Override
public Bitmap onLoadBitmap(final Config pBitmapConfig) {
	final Picture picture = this.mPicture;
	if(picture == null) {
		Debug.e("Failed loading Bitmap in " + this.getClass().getSimpleName() + ".");
		return null;
	}

	final Bitmap bitmap = Bitmap.createBitmap(this.mTextureWidth, this.mTextureHeight, pBitmapConfig);
	final Canvas canvas = new Canvas(bitmap);

	final float scaleX = (float)this.mTextureWidth / this.mPicture.getWidth();
	final float scaleY = (float)this.mTextureHeight / this.mPicture.getHeight();
	canvas.scale(scaleX, scaleY, 0, 0);

	picture.draw(canvas);

	return bitmap;
}
 

@Override
public void draw(Canvas canvas) {

    canvas.drawCircle(mBounds.centerX(), mBounds.centerY(), mBounds.centerX(), mBackgroundPaint);
    Picture picture = new Picture() ;
    picture.draw(canvas);
    canvas.save();
    canvas.rotate(180 * mRotation, (x(0) + x(1))/2, (y(0) + y(1))/2);
    canvas.drawLine(x(0), y(0), x(1), y(1), mLinePaint);
    canvas.restore();

    canvas.save();
    canvas.rotate(180 * mRotation, (x(2) + x(3)) / 2, (y(2) + y(3)) / 2);
    canvas.drawLine(x(2), y(2), x(3), y(3), mLinePaint);
    canvas.restore();

    canvas.save();
    canvas.rotate(180 * mRotation, (x(4) + x(5)) / 2, (y(4) + y(5)) / 2);
    canvas.drawLine(x(4), y(4), x(5), y(5), mLinePaint);
    canvas.restore();

}
 

@Override
public Bitmap onLoadBitmap(final Config pBitmapConfig) {
	final Picture picture = this.mPicture;
	if (picture == null) {
		Debug.e("Failed loading Bitmap in " + this.getClass().getSimpleName() + ".");
		return null;
	}

	final Bitmap bitmap = Bitmap.createBitmap(this.mTextureWidth, this.mTextureHeight, pBitmapConfig);
	final Canvas canvas = new Canvas(bitmap);

	final float scaleX = (float)this.mTextureWidth / this.mPicture.getWidth();
	final float scaleY = (float)this.mTextureHeight / this.mPicture.getHeight();
	canvas.scale(scaleX, scaleY, 0, 0);

	picture.draw(canvas);

	return bitmap;
}
 

/**
 * X5内核截取长图【暂时用不了】
 * @param webView               x5WebView的控件
 * @return                      返回bitmap对象
 *
 *        方法
 *        1. 使用X5内核方法snapshotWholePage(Canvas, boolean, boolean)；在X5内核中提供了一个截取整个
 *        WebView界面的方法snapshotWholePage(Canvas, boolean, boolean)，但是这个方法有个缺点，
 *        就是不以屏幕上WebView的宽高截图，只是以WebView的contentWidth和contentHeight为宽高截图，
 *        所以截出来的图片会不怎么清晰，但作为缩略图效果还是不错了。
 *        2. 使用capturePicture()截取清晰长图；如果想要在X5内核下截到清晰的长图，不能使用
 *        snapshotWholePage()，依然可以采用capturePicture()。X5内核下使用capturePicture()进行截图，
 *        可以直接拿到WebView的清晰长图，但这是个Deprecated的方法，使用的时候要做好异常处理。
 */
@Deprecated
public static Bitmap captureX5Picture(WebView webView) {
    if (webView == null) {
        return null;
    }
    try {
        Picture picture =  webView.capturePicture();
        int width = picture.getWidth();
        int height = picture.getHeight();
        if (width > 0 && height > 0) {
            Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
            Canvas canvas = new Canvas(bitmap);
            picture.draw(canvas);
            return bitmap;
        }
    } catch (Exception e){
        e.printStackTrace();
        return null;
    }
    return null;
}
 

@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.button:
            String time = Tools.getCurrentTime();
            String version = Tools.getAppVersion(mContext);
            String name = Tools.getName(mContext);
            String currentUrl = mWebView.getUrl();
            String info = "Application Info: \n\n version: " + version
                    + "\n name: " + name
                    + "\n curTime: " + time
                    + "\n curUrl: " + currentUrl;
            mWebView.loadUrl("javascript:showAlert('" + info + "')");
            break;
        case R.id.save:
            Picture snapShot = mWebView.capturePicture();
            Bitmap bmp = Bitmap.createBitmap(snapShot.getWidth(), snapShot.getHeight(), Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(bmp);
            snapShot.draw(canvas);
            if (!TextUtils.isEmpty(FileUtil.savaBitmap2SDcard(mContext, bmp, "1111"))) {
                TT.showSToast(mContext, "success");
            }
            break;
        default:
            break;
    }
}
 

private Bitmap getBitmapFromWebView(WebView webView) {
    try {
        float scale = 1.0f / getResources().getDisplayMetrics().density;
        Picture picture = webView.capturePicture();
        Bitmap bitmap = Bitmap.createBitmap((int) (picture.getWidth() * scale), (int) (picture.getHeight() * scale), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        canvas.scale(scale, scale);
        picture.draw(canvas);
        return bitmap;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}
 

/**
 * shoot the web view
 */
public static Bitmap shoot(WebView webView) {
    Picture snapShot = webView.capturePicture();
    Bitmap bitmap = Bitmap.createBitmap(snapShot.getWidth(), snapShot.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    snapShot.draw(canvas);
    return bitmap;
}
 

private static Bitmap captureWebView(WebView webView) {
    Picture snapShot = webView.capturePicture();
    if (snapShot == null) {
        return null;
    }
    Bitmap bmp = Bitmap.createBitmap(snapShot.getWidth(),
            snapShot.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bmp);
    snapShot.draw(canvas);
    return bmp;
}
 

public Bitmap getScreenView(){
    Picture snapShot = webView.capturePicture();
    Bitmap bmp = Bitmap.createBitmap(snapShot.getWidth(),snapShot.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bmp);
    snapShot.draw(canvas);
    return bmp;
}
 

@Override
public final void drawPicture(@NonNull Picture picture) {
    picture.endRecording();
    int restoreCount = save();
    picture.draw(this);
    restoreToCount(restoreCount);
}
 

/**
 * Android5.0以下版本
 * 对WebView进行截屏，虽然使用过期方法，
 * 但在当前Android版本中测试可行
 * @param webView               WebView控件
 * @return                      返回bitmap对象
 */
public static Bitmap captureWebViewKitKat(WebView webView) {
    Picture picture = webView.capturePicture();
    int width = picture.getWidth();
    int height = picture.getHeight();
    if (width > 0 && height > 0) {
        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
        Canvas canvas = new Canvas(bitmap);
        picture.draw(canvas);
        return bitmap;
    }
    return null;
}
 

/**
 * Returns a bitmap of a given WebView.
 *  
 * @param webView the webView to save a bitmap from
 * @return a bitmap of the given web view
 * 
 */

private Bitmap getBitmapOfWebView(final WebView webView){
	Picture picture = webView.capturePicture();
	Bitmap b = Bitmap.createBitmap( picture.getWidth(), picture.getHeight(), Bitmap.Config.ARGB_8888);
	Canvas c = new Canvas(b);
	picture.draw(c);
	return b;
}
 

/**
 * 绘制picture
 *
 * @param canvas
 * @param pictures
 */
public static void draw(Canvas canvas, Picture... pictures) {
    if (!isDraw) {
        return;
    }

    for (Picture picture : pictures) {
        picture.draw(canvas);
    }
}
 

private static Bitmap createType1(WebView webView, FileHelper.OnSavedToGalleryListener listener) {
    Picture picture = webView.capturePicture();
    int width = picture.getWidth();
    int height = picture.getHeight();
    Bitmap bitmap = null;
    if (width > 0 && height > 0) {
        bitmap = Bitmap.createBitmap(width, height, Config.RGB_565);
        Canvas canvas = new Canvas(bitmap);
        picture.draw(canvas);
    }
    return bitmap;
}
 

private Bitmap captureWebView(WebView webView) {
    Picture picture = webView.capturePicture();
    int width = picture.getWidth();
    int height = picture.getHeight();
    if (width > 0 && height > 0) {
        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        picture.draw(canvas);
        return bitmap;
    }
    return null;
}
 

/**
 * 对WebView进行截图
 *
 * @param webView
 * @return
 */
private Bitmap captureWebView1(WebView webView) {
    Picture snapShot = webView.capturePicture();
    Bitmap bmp = Bitmap.createBitmap(snapShot.getWidth(), snapShot.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bmp);
    snapShot.draw(canvas);
    return bmp;
}
 

private Drawable rasterizeSVG(MapMarker aiMarker, SVG markerSvg) {
  SVG.Svg svg = markerSvg.getRootElement();
  final float density = view.getContext().getResources().getDisplayMetrics().density;
  float height = aiMarker.Height() <= 0 ? getBestGuessHeight(svg) : aiMarker.Height();
  float width = aiMarker.Width() <= 0 ? getBestGuessWidth(svg) : aiMarker.Width();
  float scaleH = height / getBestGuessHeight(svg);
  float scaleW = width / getBestGuessWidth(svg);
  float scale = (float) Math.sqrt(scaleH * scaleH + scaleW * scaleW);

  // update fill color of SVG <path>
  Paint fillPaint = new Paint();
  Paint strokePaint = new Paint();
  PaintUtil.changePaint(fillPaint, aiMarker.FillColor());
  PaintUtil.changePaint(strokePaint, aiMarker.StrokeColor());
  SVG.Length strokeWidth = new SVG.Length(aiMarker.StrokeWidth() / scale);
  for (SVG.SvgObject element : svg.getChildren()) {
    if (element instanceof SVG.SvgConditionalElement) {
      SVG.SvgConditionalElement path = (SVG.SvgConditionalElement) element;
      path.baseStyle.fill = new SVG.Colour(fillPaint.getColor());
      path.baseStyle.fillOpacity = fillPaint.getAlpha()/255.0f;
      path.baseStyle.stroke = new SVG.Colour(strokePaint.getColor());
      path.baseStyle.strokeOpacity = strokePaint.getAlpha()/255.0f;
      path.baseStyle.strokeWidth = strokeWidth;
      path.baseStyle.specifiedFlags = 0x3d;
      if (path.style != null) {
        if ((path.style.specifiedFlags & SPECIFIED_FILL) == 0) {
          path.style.fill = new SVG.Colour(fillPaint.getColor());
          path.style.specifiedFlags |= SPECIFIED_FILL;
        }
        if ((path.style.specifiedFlags & SPECIFIED_FILL_OPACITY) == 0) {
          path.style.fillOpacity = fillPaint.getAlpha()/255.0f;
          path.style.specifiedFlags |= SPECIFIED_FILL_OPACITY;
        }
        if ((path.style.specifiedFlags & SPECIFIED_STROKE) == 0) {
          path.style.stroke = new SVG.Colour(strokePaint.getColor());
          path.style.specifiedFlags |= SPECIFIED_STROKE;
        }
        if ((path.style.specifiedFlags & SPECIFIED_STROKE_OPACITY) == 0) {
          path.style.strokeOpacity = strokePaint.getAlpha()/255.0f;
          path.style.specifiedFlags |= SPECIFIED_STROKE_OPACITY;
        }
        if ((path.style.specifiedFlags & SPECIFIED_STROKE_WIDTH) == 0) {
          path.style.strokeWidth = strokeWidth;
          path.style.specifiedFlags |= SPECIFIED_STROKE_WIDTH;
        }
      }
    }
  }

  // draw SVG to Picture and create a BitmapDrawable for rendering
  Picture picture = markerSvg.renderToPicture();
  Picture scaledPicture = new Picture();
  Canvas canvas = scaledPicture.beginRecording((int)((width + 2.0f * aiMarker.StrokeWidth()) * density),
      (int)((height + 2.0f * aiMarker.StrokeWidth()) * density));
  canvas.scale(density * scaleW, density * scaleH);
  canvas.translate(strokeWidth.floatValue(), strokeWidth.floatValue());
  picture.draw(canvas);
  scaledPicture.endRecording();
  return new PictureDrawable(scaledPicture);
}