Example usage for android.graphics Canvas save

Introduction

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

Prototype

public int save(@Saveflags int saveFlags) 

Source Link

Document

Based on saveFlags, can save the current matrix and clip onto a private stack.

Usage

From source file:vc908.stickerfactory.ui.advancedrecyclerview.decoration.ItemShadowDecorator.java

@Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
    final int childCount = parent.getChildCount();

    if (childCount == 0) {
        return;//ww w .  j a  v a  2  s .  c o  m
    }

    int savedCount = c.save(Canvas.CLIP_SAVE_FLAG);

    c.clipRect(parent.getLeft() + Math.max(0, parent.getPaddingLeft() - mShadowPadding.left),
            parent.getTop()/* + Math.max(0, parent.getPaddingTop() - mShadowPadding.top)*/,
            parent.getRight() - Math.max(0, parent.getPaddingRight() - mShadowPadding.right),
            parent.getBottom()/* - Math.max(0, parent.getPaddingBottom() - mShadowPadding.bottom)*/);

    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);

        if (!shouldDrawDropShadow(child)) {
            continue;
        }

        final int tx = (int) (ViewCompat.getTranslationX(child) + 0.5f);
        final int ty = (int) (ViewCompat.getTranslationY(child) + 0.5f);

        final int left = child.getLeft() - mShadowPadding.left;
        final int right = child.getRight() + mShadowPadding.right;
        final int top = child.getTop() - mShadowPadding.top;
        final int bottom = child.getBottom() + mShadowPadding.bottom;

        mShadowDrawable.setBounds(left + tx, top + ty, right + tx, bottom + ty);
        mShadowDrawable.draw(c);
    }

    c.restoreToCount(savedCount);

    ViewCompat.postInvalidateOnAnimation(parent);
}

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From source file:com.example.nwilde.myfirstapp.SimpleListDividerDecorator.java

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
    final int childCount = parent.getChildCount();
    final float yPositionThreshold = (mOverlap) ? 1.0f : (mDividerHeight + 1.0f); // [px]
    final float zPositionThreshold = 1.0f; // [px]

    if (childCount == 0) {
        return;//ww w  .jav a 2s  . c  om
    }

    int savedCount = c.save(Canvas.CLIP_SAVE_FLAG);

    c.clipRect(parent.getLeft() + parent.getPaddingLeft(), parent.getTop() + parent.getPaddingTop(),
            parent.getRight() - parent.getPaddingRight(), parent.getBottom() + parent.getPaddingBottom());

    for (int i = 0; i < childCount - 1; i++) {
        final View child = parent.getChildAt(i);
        final View nextChild = parent.getChildAt(i + 1);

        if ((child.getVisibility() != View.VISIBLE) || (nextChild.getVisibility() != View.VISIBLE)) {
            continue;
        }

        // check if the next item is placed at the bottom
        final float childBottom = child.getBottom() + ViewCompat.getTranslationY(child);
        final float nextChildTop = nextChild.getTop() + ViewCompat.getTranslationY(nextChild);

        if (!(Math.abs(nextChildTop - childBottom) < yPositionThreshold)) {
            continue;
        }

        // check if the next item is placed on the same plane
        final float childZ = ViewCompat.getTranslationZ(child) + ViewCompat.getElevation(child);
        final float nextChildZ = ViewCompat.getTranslationZ(nextChild) + ViewCompat.getElevation(nextChild);

        if (!(Math.abs(nextChildZ - childZ) < zPositionThreshold)) {
            continue;
        }

        final float childAlpha = ViewCompat.getAlpha(child);
        final float nextChildAlpha = ViewCompat.getAlpha(nextChild);

        final int tx = (int) (ViewCompat.getTranslationX(child) + 0.5f);
        final int ty = (int) (ViewCompat.getTranslationY(child) + 0.5f);
        final int left = child.getLeft();
        final int right = child.getRight();
        final int top = child.getBottom();
        final int bottom = top + mDividerHeight;

        mDividerDrawable.setAlpha((int) ((0.5f * 255) * (childAlpha + nextChildAlpha) + 0.5f));
        mDividerDrawable.setBounds(left + tx, top + ty, right + tx, bottom + ty);
        mDividerDrawable.draw(c);
    }

    c.restoreToCount(savedCount);
}

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From source file:net.networksaremadeofstring.rhybudd.RhybuddDock.java

private void drawGaugeNeedle(Canvas canvas, int count, int Scale) {
    canvas.save(Canvas.MATRIX_SAVE_FLAG);
    float divisor = 360.0f / Scale;

    canvas.rotate((float) (divisor * count), 100, 100);

    //Inside//from  ww w. j  a  v a  2  s  .c  o  m
    Paint needleInsidePaint = new Paint();
    needleInsidePaint.setStyle(Paint.Style.FILL_AND_STROKE);
    needleInsidePaint.setColor(Color.WHITE);
    needleInsidePaint.setStrokeWidth(4);
    needleInsidePaint.setAntiAlias(true);

    Paint needleEdgePaint = new Paint();
    needleEdgePaint.setStyle(Paint.Style.STROKE);
    needleEdgePaint.setColor(Color.DKGRAY);
    needleEdgePaint.setStrokeWidth(0.5f);
    needleEdgePaint.setAntiAlias(true);

    canvas.drawOval(new RectF(95, 95, 105, 105), needleInsidePaint);
    canvas.drawOval(new RectF(95, 96, 105, 105), needleEdgePaint);

    Path needleInside = new Path();
    needleInside.moveTo(98, 98);
    needleInside.lineTo(100, 20);
    needleInside.lineTo(102, 102);
    canvas.drawPath(needleInside, needleInsidePaint);

    Path needleEdge = new Path();
    needleInside.moveTo(99, 99);
    needleInside.lineTo(99, 19);
    needleInside.lineTo(103, 103);

    canvas.drawPath(needleEdge, needleEdgePaint);
    canvas.restore();
}

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From source file:me.lizheng.deckview.views.DeckChildViewHeader.java

@SuppressLint("DrawAllocation")
@Override/* w w  w  . j  av a2s.co  m*/
protected void onDraw(Canvas canvas) {
    // Draw the highlight at the top edge (but put the bottom edge just out of view)
    float offset = (float) Math.ceil(mConfig.taskViewHighlightPx / 2f);
    float radius = mConfig.taskViewRoundedCornerRadiusPx;
    int count = canvas.save(Canvas.CLIP_SAVE_FLAG);
    canvas.clipRect(0, 0, getMeasuredWidth(), getMeasuredHeight());
    canvas.drawRoundRect(
            new RectF(-offset, 0f, (float) getMeasuredWidth() + offset, getMeasuredHeight() + radius), radius,
            radius, sHighlightPaint);
    canvas.restoreToCount(count);
}

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From source file:com.github.shareme.gwsmaterialuikit.library.advancerv.draggable.DraggingItemDecorator.java

private Bitmap createDraggingItemImage(View v, NinePatchDrawable shadow) {
    int width = v.getWidth() + mShadowPadding.left + mShadowPadding.right;
    int height = v.getHeight() + mShadowPadding.top + mShadowPadding.bottom;

    final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    final Canvas canvas = new Canvas(bitmap);

    if (shadow != null) {
        shadow.setBounds(0, 0, width, height);
        shadow.draw(canvas);//from w  w  w.j  a v  a  2s  .  co  m
    }

    final int savedCount = canvas.save(Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG);
    // NOTE: Explicitly set clipping rect. This is required on Gingerbread.
    canvas.clipRect(mShadowPadding.left, mShadowPadding.top, width - mShadowPadding.right,
            height - mShadowPadding.bottom);
    canvas.translate(mShadowPadding.left, mShadowPadding.top);
    v.draw(canvas);
    canvas.restoreToCount(savedCount);

    return bitmap;
}

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From source file:com.appsimobile.appsii.module.home.SunriseDrawable.java

private float drawArc(Canvas canvas, Rect bounds) {
    canvas.drawPath(mArc, mArcPaint);//from w w  w .ja v a2  s. c  o m

    int minuteSinceStart = mNowMinutes - mRiseMinutes;
    int totalMinutes = mSetMinutes - mRiseMinutes;
    float pct = (minuteSinceStart / (float) totalMinutes);

    int r = bounds.right - mRightOffset;
    int l = bounds.left + mLeftOffset;

    int px = (int) (pct * (r - l));

    mClipRect.set(0, 0, l + px, bounds.bottom);
    canvas.save(Canvas.CLIP_SAVE_FLAG);
    canvas.clipRect(mClipRect);
    canvas.drawPath(mArcFill, mArcFillPaint);
    canvas.restore();

    return pct;
}

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From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ?? ??/*from   w w w. j a v  a  2s . c o  m*/
 * 
 * @param src
 *            the bitmap object you want proecss
 * @param watermark
 *            the water mark above the src
 * @return return a bitmap object ,if paramter's length is 0,return null
 */
public static Bitmap createWatermarkBitmap(Bitmap src, Bitmap watermark) {
    if (src == null) {
        return null;
    }

    int w = src.getWidth();
    int h = src.getHeight();
    int ww = watermark.getWidth();
    int wh = watermark.getHeight();
    // create the new blank bitmap
    Bitmap newb = Bitmap.createBitmap(w, h, Config.ARGB_8888);// SRC?
    Canvas cv = new Canvas(newb);
    // draw src into
    cv.drawBitmap(src, 0, 0, null);//  00??src
    // draw watermark into
    cv.drawBitmap(watermark, w - ww + 5, h - wh + 5, null);// src??
    // save all clip
    cv.save(Canvas.ALL_SAVE_FLAG);// ?
    // store
    cv.restore();// 
    return newb;
}

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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 w w. j a  va 2 s .c o  m*/
        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:com.android.widget.SlidingPaneLayout.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    boolean result;
    final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);

    if (mCanSlide && !lp.slideable && mSlideableView != null) {
        // Clip against the slider; no sense drawing what will immediately be covered.
        canvas.getClipBounds(mTmpRect);//from www  .j a  v a2 s .com
        mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
        canvas.clipRect(mTmpRect);
    }

    result = super.drawChild(canvas, child, drawingTime);

    canvas.restoreToCount(save);

    return result;
}

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From source file:uk.ac.kent.jb509.shopper.utils.SlidingUpPanelLayout.java

@Override
protected boolean drawChild(final Canvas canvas, final View child, final long drawingTime) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    boolean result;
    final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);

    boolean drawScrim = false;

    if (mCanSlide && !lp.slideable && mSlideableView != null) {
        // Clip against the slider; no sense drawing what will immediately
        // be covered.
        canvas.getClipBounds(mTmpRect);/* w  w  w. ja v a2 s  . co m*/
        mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());

        if (!mIsTransparent) {
            canvas.clipRect(mTmpRect);
        }

        if (mSlideOffset < 1) {
            drawScrim = true;
        }
    }

    result = super.drawChild(canvas, child, drawingTime);
    canvas.restoreToCount(save);

    if (drawScrim) {
        final int baseAlpha = (mCoveredFadeColor & 0xff000000) >>> 24;
        final int imag = (int) (baseAlpha * (1 - mSlideOffset));
        final int color = imag << 24 | mCoveredFadeColor & 0xffffff;
        mCoveredFadePaint.setColor(color);
        canvas.drawRect(mTmpRect, mCoveredFadePaint);
    }

    return result;
}

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