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.github.shareme.gwsmaterialuikit.library.advancerv.draggable.BaseEdgeEffectDecorator.java

private static boolean drawGlow(Canvas c, RecyclerView parent, int dir, EdgeEffectCompat edge) {
    if (edge.isFinished()) {
        return false;
    }//  ww w  .  ja v a  2 s .c o m

    final int restore = c.save();
    final boolean clipToPadding = getClipToPadding(parent);

    switch (dir) {
    case EDGE_TOP:
        if (clipToPadding) {
            c.translate(parent.getPaddingLeft(), parent.getPaddingTop());
        }
        break;
    case EDGE_BOTTOM:
        c.rotate(180);
        if (clipToPadding) {
            c.translate(-parent.getWidth() + parent.getPaddingRight(),
                    -parent.getHeight() + parent.getPaddingBottom());
        } else {
            c.translate(-parent.getWidth(), -parent.getHeight());
        }
        break;
    case EDGE_LEFT:
        c.rotate(-90);
        if (clipToPadding) {
            c.translate(-parent.getHeight() + parent.getPaddingTop(), parent.getPaddingLeft());
        } else {
            c.translate(-parent.getHeight(), 0);
        }
        break;
    case EDGE_RIGHT:
        c.rotate(90);
        if (clipToPadding) {
            c.translate(parent.getPaddingTop(), -parent.getWidth() + parent.getPaddingRight());
        } else {
            c.translate(0, -parent.getWidth());
        }
        break;
    }

    boolean needsInvalidate = edge.draw(c);

    c.restoreToCount(restore);

    return needsInvalidate;
}

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From source file:com.github.czy1121.view.CornerLabelView.java

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

    float xy = mHeight / SQRT2;
    canvas.save();/*from   ww w  . ja  v  a 2  s. c o m*/
    canvas.translate(xy, xy);
    canvas.rotate((mIsTop ? 1 : -1) * (mIsLeft ? -45 : 45));
    canvas.drawPath(calcPath(), mPaint);

    mText1.draw(canvas, mPaddingBottom, mIsTop);
    if (mIsTriangle) {
        mText2.draw(canvas, mPaddingBottom + mPaddingCenter + mText1.height, mIsTop);
    }
    canvas.restore();
}

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From source file:com.khoai.bus.ui.IconGenerator.java

/**
 * Creates an icon with the current content and style.
 * <p/>/*ww  w. ja v  a2s .co  m*/
 * This method is useful if a custom view has previously been set, or if text content is not
 * applicable.
 */
public Bitmap makeIcon() {
    int measureSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
    mContainer.measure(measureSpec, measureSpec);

    int measuredWidth = mContainer.getMeasuredWidth();
    int measuredHeight = mContainer.getMeasuredHeight();

    mContainer.layout(0, 0, measuredWidth, measuredHeight);

    if (mRotation == 1 || mRotation == 3) {
        measuredHeight = mContainer.getMeasuredWidth();
        measuredWidth = mContainer.getMeasuredHeight();
    }

    Bitmap r = Bitmap.createBitmap(measuredWidth, measuredHeight, Bitmap.Config.ARGB_8888);
    r.eraseColor(Color.TRANSPARENT);

    Canvas canvas = new Canvas(r);

    if (mRotation == 0) {
        // do nothing
    } else if (mRotation == 1) {
        canvas.translate(measuredWidth, 0);
        canvas.rotate(90);
    } else if (mRotation == 2) {
        canvas.rotate(180, measuredWidth / 2, measuredHeight / 2);
    } else {
        canvas.translate(0, measuredHeight);
        canvas.rotate(270);
    }
    mContainer.draw(canvas);
    return r;
}

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From source file:com.anl.wxb.jieqi.view.VerticalSeekBar.java

@Override
protected synchronized void onDraw(Canvas canvas) {
    if (!useViewRotation()) {
        switch (mRotationAngle) {
        case ROTATION_ANGLE_CW_90:
            canvas.rotate(90);
            canvas.translate(0, -super.getWidth());
            break;
        case ROTATION_ANGLE_CW_270:
            canvas.rotate(-90);/*from  w w w .  j  a  v  a2  s  .  c  o  m*/
            canvas.translate(-super.getHeight(), 0);
            break;
        }
    }

    super.onDraw(canvas);
}

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From source file:com.h6ah4i.android.widget.advrecyclerview.draggable.EdgeEffectDecorator.java

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
    boolean needsInvalidate = false;

    if (mTopGlow != null && !mTopGlow.isFinished()) {
        final int restore = c.save();
        if (getClipToPadding(parent)) {
            c.translate(parent.getPaddingLeft(), parent.getPaddingTop());
        }/* w w w  .  java 2s. c  om*/
        //noinspection ConstantConditions
        needsInvalidate |= mTopGlow.draw(c);
        c.restoreToCount(restore);
    }

    if (mBottomGlow != null && !mBottomGlow.isFinished()) {
        final int restore = c.save();
        c.rotate(180);
        if (getClipToPadding(parent)) {
            c.translate(-parent.getWidth() + parent.getPaddingRight(),
                    -parent.getHeight() + parent.getPaddingBottom());
        } else {
            c.translate(-parent.getWidth(), -parent.getHeight());
        }
        needsInvalidate |= mBottomGlow.draw(c);
        c.restoreToCount(restore);
    }

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

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From source file:com.evilduck.piano.views.instrument.PianoView.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)) {
        if (!leftEdgeEffect.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();
            final int width = getWidth();

            canvas.rotate(270);
            canvas.translate(-height + getPaddingTop(), 0);
            leftEdgeEffect.setSize(height, width);
            needsInvalidate |= leftEdgeEffect.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }/*w  ww  .j  av  a2  s.  c om*/
        if (!rightEdgeEffect.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -width);
            rightEdgeEffect.setSize(height, width);
            needsInvalidate |= rightEdgeEffect.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        leftEdgeEffect.finish();
        rightEdgeEffect.finish();
    }

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

---

From source file:com.ttxgps.zoom.GestureImageView.java

@Override
protected void onDraw(Canvas canvas) {
    if (layout) {
        if (drawable != null && !isRecycled()) {
            canvas.save();//  w  ww  .ja  v a 2 s  .co m

            float adjustedScale = scale * scaleAdjust;

            canvas.translate(x, y);

            if (rotation != 0.0f) {
                canvas.rotate(rotation);
            }

            if (adjustedScale != 1.0f) {
                canvas.scale(adjustedScale, adjustedScale);
            }

            drawable.draw(canvas);

            canvas.restore();
        }

        if (drawLock.availablePermits() <= 0) {
            drawLock.release();
        }
    }
}

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From source file:om.sstvencoder.CropView.java

private void drawBitmap(Canvas canvas) {
    int w = mImageWidth;
    int h = mImageHeight;
    for (int i = 0; i < mOrientation / 90; ++i) {
        int tmp = w;
        w = h;/*  ww  w  .j  a v  a 2  s  . c  om*/
        h = tmp;
        //noinspection SuspiciousNameCombination
        mImageDrawRect.set(mImageDrawRect.top, h - mImageDrawRect.left, mImageDrawRect.bottom,
                h - mImageDrawRect.right);
        //noinspection SuspiciousNameCombination
        mCanvasDrawRect.set(mCanvasDrawRect.top, -mCanvasDrawRect.right, mCanvasDrawRect.bottom,
                -mCanvasDrawRect.left);
    }
    mImageDrawRect.sort();
    canvas.save();
    canvas.rotate(mOrientation);
    if (!mSmallImage) {
        int sampleSize = getSampleSize();
        if (sampleSize < mCacheSampleSize || !mCacheRect.contains(mImageDrawRect)) {
            if (mCacheBitmap != null)
                mCacheBitmap.recycle();
            int cacheWidth = mImageDrawRect.width();
            int cacheHeight = mImageDrawRect.height();
            while (cacheWidth * cacheHeight < (sampleSize * 1024 * sampleSize * 1024)) {
                cacheWidth += mImageDrawRect.width();
                cacheHeight += mImageDrawRect.height();
            }
            mCacheRect.set(Math.max(0, ~(sampleSize - 1) & (mImageDrawRect.centerX() - cacheWidth / 2)),
                    Math.max(0, ~(sampleSize - 1) & (mImageDrawRect.centerY() - cacheHeight / 2)),
                    Math.min(mRegionDecoder.getWidth(),
                            ~(sampleSize - 1) & (mImageDrawRect.centerX() + cacheWidth / 2 + sampleSize - 1)),
                    Math.min(mRegionDecoder.getHeight(),
                            ~(sampleSize - 1) & (mImageDrawRect.centerY() + cacheHeight / 2 + sampleSize - 1)));
            mBitmapOptions.inSampleSize = mCacheSampleSize = sampleSize;
            mCacheBitmap = mRegionDecoder.decodeRegion(mCacheRect, mBitmapOptions);
        }
        mImageDrawRect.offset(-mCacheRect.left, -mCacheRect.top);
        mImageDrawRect.left /= mCacheSampleSize;
        mImageDrawRect.top /= mCacheSampleSize;
        mImageDrawRect.right /= mCacheSampleSize;
        mImageDrawRect.bottom /= mCacheSampleSize;
    }
    canvas.drawBitmap(mCacheBitmap, mImageDrawRect, mCanvasDrawRect, mPaint);
    canvas.restore();
}

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From source file:com.android.photos.views.GalleryThumbnailView.java

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

    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());
        if (mLeftEdge.draw(canvas)) {
            postInvalidateOnAnimation();
        }/*from  www. j a  va  2  s .c o  m*/
        canvas.restoreToCount(restoreCount);
    }
    if (!mRightEdge.isFinished()) {
        final int restoreCount = canvas.save();
        final int width = getWidth();
        final int height = getHeight() - getPaddingTop() - getPaddingBottom();

        canvas.rotate(90);
        canvas.translate(-getPaddingTop(), width);
        mRightEdge.setSize(height, width);
        if (mRightEdge.draw(canvas)) {
            postInvalidateOnAnimation();
        }
        canvas.restoreToCount(restoreCount);
    }
}

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From source file:me.lizheng.deckview.helpers.FakeShadowDrawable.java

private void drawShadow(Canvas canvas) {
    final float edgeShadowTop = -mCornerRadius - mShadowSize;
    final float inset = mCornerRadius + mInsetShadow + mRawShadowSize / 2;
    final boolean drawHorizontalEdges = mCardBounds.width() - 2 * inset > 0;
    final boolean drawVerticalEdges = mCardBounds.height() - 2 * inset > 0;
    // LT//from   w  ww .ja v a2  s  .  co  m
    int saved = canvas.save();
    canvas.translate(mCardBounds.left + inset, mCardBounds.top + inset);
    canvas.drawPath(mCornerShadowPath, mCornerShadowPaint);
    if (drawHorizontalEdges) {
        canvas.drawRect(0, edgeShadowTop, mCardBounds.width() - 2 * inset, -mCornerRadius, mEdgeShadowPaint);
    }
    canvas.restoreToCount(saved);
    // RB
    saved = canvas.save();
    canvas.translate(mCardBounds.right - inset, mCardBounds.bottom - inset);
    canvas.rotate(180f);
    canvas.drawPath(mCornerShadowPath, mCornerShadowPaint);
    if (drawHorizontalEdges) {
        canvas.drawRect(0, edgeShadowTop, mCardBounds.width() - 2 * inset, -mCornerRadius + mShadowSize,
                mEdgeShadowPaint);
    }
    canvas.restoreToCount(saved);
    // LB
    saved = canvas.save();
    canvas.translate(mCardBounds.left + inset, mCardBounds.bottom - inset);
    canvas.rotate(270f);
    canvas.drawPath(mCornerShadowPath, mCornerShadowPaint);
    if (drawVerticalEdges) {
        canvas.drawRect(0, edgeShadowTop, mCardBounds.height() - 2 * inset, -mCornerRadius, mEdgeShadowPaint);
    }
    canvas.restoreToCount(saved);
    // RT
    saved = canvas.save();
    canvas.translate(mCardBounds.right - inset, mCardBounds.top + inset);
    canvas.rotate(90f);
    canvas.drawPath(mCornerShadowPath, mCornerShadowPaint);
    if (drawVerticalEdges) {
        canvas.drawRect(0, edgeShadowTop, mCardBounds.height() - 2 * inset, -mCornerRadius, mEdgeShadowPaint);
    }
    canvas.restoreToCount(saved);
}

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