Example usage for android.graphics Canvas rotate

Introduction

In this page you can find the example usage for android.graphics Canvas rotate.

Prototype

public void rotate(float degrees) 

Source Link

Document

Preconcat the current matrix with the specified rotation.

Usage

From source file:com.hippo.largeimageview.LargeImageView.java

private int transformCanvas(Canvas canvas) {
    final int saved;
    switch (mOrientation) {
    case ORIENTATION_0:
        saved = 0;/*from w ww.j a  va2s.  c om*/
        break;
    case ORIENTATION_90:
        saved = canvas.save(Canvas.MATRIX_SAVE_FLAG);
        canvas.translate(getWidth(), 0);
        canvas.rotate(90);
        break;
    case ORIENTATION_180:
        saved = canvas.save(Canvas.MATRIX_SAVE_FLAG);
        canvas.translate(getWidth(), getHeight());
        canvas.rotate(180);
        break;
    case ORIENTATION_270:
        saved = canvas.save(Canvas.MATRIX_SAVE_FLAG);
        canvas.translate(0, getHeight());
        canvas.rotate(-90);
        break;
    default:
        throw new IllegalStateException("Unknown orientation: " + mOrientation);
    }
    return saved;
}

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From source file:co.jlabs.cersei_retailer.zxingfragmentlib.BarCodeScannerFragment.java

/**
 * Superimpose a line for 1D or dots for 2D to highlight the key features of the barcode.
 *
 * @param barcode     A bitmap of the captured image.
 * @param scaleFactor amount by which thumbnail was scaled
 * @param rawResult   The decoded results which contains the points to draw.
 *///from   w  w w.j  a  v  a 2s. c o m
private void drawResultPoints(Bitmap barcode, float scaleFactor, Result rawResult) {
    ResultPoint[] points = rawResult.getResultPoints();
    if (points != null && points.length > 0 && barcode != null) {
        Canvas canvas = new Canvas(barcode);
        Paint paint = new Paint();
        paint.setColor(getResources().getColor(R.color.result_points));

        if (points.length == 2) {
            paint.setStrokeWidth(4.0f);
            drawLine(canvas, paint, points[0], points[1], scaleFactor);
        } else if (points.length == 4 && (rawResult.getBarcodeFormat() == BarcodeFormat.UPC_A
                || rawResult.getBarcodeFormat() == BarcodeFormat.EAN_13)) {
            // Hacky special case -- draw two lines, for the barcode and metadata
            drawLine(canvas, paint, points[0], points[1], scaleFactor);
            drawLine(canvas, paint, points[2], points[3], scaleFactor);
        } else {
            paint.setStrokeWidth(10.0f);
            for (ResultPoint point : points) {
                canvas.drawPoint(scaleFactor * point.getX(), scaleFactor * point.getY(), paint);
            }
        }

        if (isPortrait()) {
            Log.d(TAG, "rotating results canvas");
            canvas.rotate(90);
        }
    }
}

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From source file:com.bitflake.counter.HorizontalPicker.java

private void drawEdgeEffect(Canvas canvas, EdgeEffect edgeEffect, int degrees) {

    if (canvas == null || edgeEffect == null || (degrees != 90 && degrees != 270)) {
        return;/*from   ww  w.j  ava 2s  . co  m*/
    }

    if (!edgeEffect.isFinished()) {
        final int restoreCount = canvas.getSaveCount();
        final int width = getWidth();
        final int height = getHeight();

        canvas.rotate(degrees);

        if (degrees == 270) {
            canvas.translate(-height, Math.max(0, getScrollX()));
        } else { // 90
            canvas.translate(0, -(Math.max(getScrollRange(), getScaleX()) + width));
        }

        edgeEffect.setSize(height, width);
        if (edgeEffect.draw(canvas)) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
                postInvalidateOnAnimation();
            } else {
                postInvalidate();
            }
        }

        canvas.restoreToCount(restoreCount);
    }

}

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From source file:com.aviary.android.feather.sdk.widget.AviaryWorkspace.java

private void drawEdges(Canvas canvas) {

    if (mEdgeGlowLeft != null) {

        final int width = getWidth();
        final int height = getHeight() - getPaddingTop() - getPaddingBottom();

        if (!mEdgeGlowLeft.isFinished()) {
            final int restoreCount = canvas.save();

            canvas.rotate(270);
            canvas.translate(-height + getPaddingTop(), 0);
            mEdgeGlowLeft.setSize(height, width);
            if (mEdgeGlowLeft.draw(canvas)) {
                postInvalidate();//from  ww  w  . ja va2  s .  c o  m
            }
            canvas.restoreToCount(restoreCount);
        }

        if (!mEdgeGlowRight.isFinished()) {
            final int restoreCount = canvas.save();

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -(mTouchX + width));
            mEdgeGlowRight.setSize(height, width);

            if (mEdgeGlowRight.draw(canvas)) {
                postInvalidate();
            }
            canvas.restoreToCount(restoreCount);
        }
    }
}

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From source file:com.acbelter.scheduleview.ScheduleView.java

private void drawEdgeEffects(Canvas canvas) {
    boolean needsInvalidate = false;

    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS) {
        if (!mTopEdgeEffect.isFinished()) {
            int saveCount = canvas.save();
            int width = mViewWidth - getPaddingLeft() - getPaddingRight();
            int height = mViewHeight - getPaddingTop() - getPaddingBottom();

            canvas.translate(0, getPaddingTop());

            mTopEdgeEffect.setSize(width, height);
            needsInvalidate |= mTopEdgeEffect.draw(canvas);
            canvas.restoreToCount(saveCount);
        }/* w  w w. ja  v a2 s .c  o  m*/
        if (!mBottomEdgeEffect.isFinished()) {
            int saveCount = canvas.save();
            int width = mViewWidth - getPaddingLeft() - getPaddingRight();
            int height = mViewHeight - getPaddingTop() - getPaddingBottom();

            canvas.translate(mViewWidth, mViewHeight - getPaddingBottom());
            canvas.rotate(180);

            mBottomEdgeEffect.setSize(width, height);
            needsInvalidate |= mBottomEdgeEffect.draw(canvas);
            canvas.restoreToCount(saveCount);
        }
    } else {
        mTopEdgeEffect.finish();
        mBottomEdgeEffect.finish();
    }

    if (needsInvalidate) {
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.comcast.freeflow.core.FreeFlowContainer.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    boolean needsInvalidate = false;

    final int height = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
    final int width = getMeasuredWidth();

    if (!mLeftEdge.isFinished()) {
        final int restoreCount = canvas.save();

        canvas.rotate(270);
        canvas.translate(-height + getPaddingTop(), 0);// width);
        mLeftEdge.setSize(height, width);

        needsInvalidate = mLeftEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }/*from   w ww  .  java  2 s. c o  m*/

    if (!mTopEdge.isFinished()) {
        final int restoreCount = canvas.save();

        mTopEdge.setSize(width, height);

        needsInvalidate = mTopEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }

    if (!mRightEdge.isFinished()) {
        final int restoreCount = canvas.save();

        canvas.rotate(90);
        canvas.translate(0, -width);// width);
        mRightEdge.setSize(height, width);

        needsInvalidate = mRightEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }

    if (!mBottomEdge.isFinished()) {
        final int restoreCount = canvas.save();

        canvas.rotate(180);
        canvas.translate(-width + getPaddingTop(), -height);

        mBottomEdge.setSize(width, height);

        needsInvalidate = mBottomEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }

    if (needsInvalidate)
        postInvalidateOnAnimation();

}

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From source file:com.marshalchen.common.uimodule.freeflow.core.FreeFlowContainer.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);

    boolean needsInvalidate = false;

    final int height = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
    final int width = getMeasuredWidth();

    if (!mLeftEdge.isFinished()) {
        final int restoreCount = canvas.save();

        canvas.rotate(270);
        canvas.translate(-height + getPaddingTop(), 0);// width);
        mLeftEdge.setSize(height, width);

        needsInvalidate = mLeftEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }//ww  w .  j  a  v  a 2 s .  c  o  m

    if (!mTopEdge.isFinished()) {
        final int restoreCount = canvas.save();

        mTopEdge.setSize(width, height);

        needsInvalidate = mTopEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }

    if (!mRightEdge.isFinished()) {
        final int restoreCount = canvas.save();

        canvas.rotate(90);
        canvas.translate(0, -width);// width);
        mRightEdge.setSize(height, width);

        needsInvalidate = mRightEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }

    if (!mBottomEdge.isFinished()) {
        final int restoreCount = canvas.save();

        canvas.rotate(180);
        canvas.translate(-width + getPaddingTop(), -height);

        mBottomEdge.setSize(width, height);

        needsInvalidate = mBottomEdge.draw(canvas);
        canvas.restoreToCount(restoreCount);
    }

    if (needsInvalidate) {
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

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From source file:com.jzh.stuapp.view.MyViewPager.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);
    boolean needsInvalidate = false;

    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {
        if (!mLeftEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();

            canvas.rotate(270);
            canvas.translate(-height + getPaddingTop(), 0);
            mLeftEdge.setSize(height, getWidth());
            needsInvalidate |= mLeftEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }/*from  w  w w  . jav  a  2s  .c  om*/
        if (!mRightEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();
            final int itemCount = mAdapter != null ? mAdapter.getCount() : 1;

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -itemCount * (width + mPageMargin) + mPageMargin);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        invalidate();
    }
}

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From source file:com.yimeng.babymom.view.LazyViewPager.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);
    boolean needsInvalidate = false;

    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {
        if (!mLeftEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();

            canvas.rotate(270);
            canvas.translate(-height + getPaddingTop(), 0);
            mLeftEdge.setSize(getWidth(), height);
            needsInvalidate = mLeftEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }/*from  w  w w .j a  v a  2 s .co  m*/
        if (!mRightEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();
            final int itemCount = mAdapter != null ? mAdapter.getCount() : 1;

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -itemCount * (width + mPageMargin) + mPageMargin);
            mRightEdge.setSize(width, height);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        invalidate();
    }
}

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From source file:com.cnpeng.cnpeng_mydemosfrom2016_12.a_12_GetLocalFiles_VP_FM.CustomNoPreLoadViewPager.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);
    boolean needsInvalidate = false;

    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {
        if (!mLeftEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();

            canvas.rotate(270);
            canvas.translate(-height + getPaddingTop(), 0);
            mLeftEdge.setSize(height, getWidth());
            needsInvalidate |= mLeftEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }//from  www .jav a 2s .c  o m
        if (!mRightEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();
            final int itemCount = mAdapter != null ? mAdapter.getCount() : 1;

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -itemCount * (width + mPageMargin) + mPageMargin);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating  
        invalidate();
    }
}

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