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() 

Source Link

Document

Saves the current matrix and clip onto a private stack.

Usage

From source file:com.ziv.recyclerview.gridview.vertical.DividerGridItemDecoration.java

/**
 * Draw vertical divider/*  ww  w  .  j a  v  a  2 s. c om*/
 *
 * @param canvas Canvas to draw into
 * @param parent RecyclerView this ItemDecoration is drawing into
 */
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private void drawVertical(Canvas canvas, RecyclerView parent) {
    canvas.save();
    final int left;
    final int right;
    if (parent.getClipToPadding()) {
        left = parent.getPaddingLeft();
        right = parent.getWidth() - parent.getPaddingRight();
        canvas.clipRect(left, parent.getPaddingTop(), right, parent.getHeight() - parent.getPaddingBottom());
    } else {
        left = 0;
        right = parent.getWidth();
    }

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        parent.getDecoratedBoundsWithMargins(child, mBounds);
        final int bottom = mBounds.bottom + Math.round(ViewCompat.getTranslationY(child));
        final int top = bottom - mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(canvas);
    }
    canvas.restore();
}

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From source file:com.ziv.recyclerview.gridview.vertical.DividerGridItemDecoration.java

/**
 * Draw horizontal divider/*  w  ww. ja v a 2  s  . c  o m*/
 *
 * @param canvas Canvas to draw into
 * @param parent RecyclerView this ItemDecoration is drawing into
 */
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private void drawHorizontal(Canvas canvas, RecyclerView parent) {
    canvas.save();
    final int top;
    final int bottom;
    if (parent.getClipToPadding()) {
        top = parent.getPaddingTop();
        bottom = parent.getHeight() - parent.getPaddingBottom();
        canvas.clipRect(parent.getPaddingLeft(), top, parent.getWidth() - parent.getPaddingRight(), bottom);
    } else {
        top = 0;
        bottom = parent.getHeight();
    }

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        parent.getLayoutManager().getDecoratedBoundsWithMargins(child, mBounds);
        final int right = mBounds.right + Math.round(ViewCompat.getTranslationX(child));
        final int left = right - mDivider.getIntrinsicWidth();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(canvas);
    }
    canvas.restore();
}

---

From source file:com.holmes.ponderosa.ui.debug.NonConsumingScrimInsetsFrameLayout.java

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

    int width = getWidth();
    int height = getHeight();
    if (insets != null && insetForeground != null) {
        int sc = canvas.save();
        canvas.translate(getScrollX(), getScrollY());

        // Top// www .  j  a  v a 2  s . c o  m
        tempRect.set(0, 0, width, insets.top);
        insetForeground.setBounds(tempRect);
        insetForeground.draw(canvas);

        // Bottom
        tempRect.set(0, height - insets.bottom, width, height);
        insetForeground.setBounds(tempRect);
        insetForeground.draw(canvas);

        // Left
        tempRect.set(0, insets.top, insets.left, height - insets.bottom);
        insetForeground.setBounds(tempRect);
        insetForeground.draw(canvas);

        // Right
        tempRect.set(width - insets.right, insets.top, width, height - insets.bottom);
        insetForeground.setBounds(tempRect);
        insetForeground.draw(canvas);

        canvas.restoreToCount(sc);
    }
}

---

From source file:io.github.sin3hz.wifispinnerview.WifiSpinnerDrawable.java

@Override
public void draw(Canvas canvas) {
    canvas.save();
    canvas.rotate(mGlobalAngle, mBounds.centerX(), mBounds.centerY());
    for (int i = 0; i < mSpinnerCount; i++) {
        canvas.drawPath(mSpinners[i].path, mSpinners[i].paint);
    }//ww w .  j av  a 2 s  .co  m
    canvas.restore();
}

---

From source file:android.support.design.internal.ScrimInsetsFrameLayout.java

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

    int width = getWidth();
    int height = getHeight();
    if (mInsets != null && mInsetForeground != null) {
        int sc = canvas.save();
        canvas.translate(getScrollX(), getScrollY());

        // Top/*from www. jav  a  2 s . com*/
        mTempRect.set(0, 0, width, mInsets.top);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        // Bottom
        mTempRect.set(0, height - mInsets.bottom, width, height);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        // Left
        mTempRect.set(0, mInsets.top, mInsets.left, height - mInsets.bottom);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        // Right
        mTempRect.set(width - mInsets.right, mInsets.top, width, height - mInsets.bottom);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        canvas.restoreToCount(sc);
    }
}

---

From source file:ar.worq.microturistas.view.ScrimInsetsFrameLayout.java

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

    int width = getWidth();
    int height = getHeight();
    if (mInsets != null && mInsetForeground != null) {
        int sc = canvas.save();
        canvas.translate(getScrollX(), getScrollY());

        // Top//from  w  w w  .jav  a 2 s  .  c o m
        mTempRect.set(0, 0, width, mInsets.top);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        // Bottom
        mTempRect.set(0, height - mInsets.bottom, width, height);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        // Left
        mTempRect.set(0, mInsets.top, mInsets.left, height - mInsets.bottom);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        // Right
        mTempRect.set(width - mInsets.right, mInsets.top, width, height - mInsets.bottom);
        mInsetForeground.setBounds(mTempRect);
        mInsetForeground.draw(canvas);

        canvas.restoreToCount(sc);
    }
}

---

From source file:com.hippo.widget.ProgressView.java

@Override
protected void onDraw(Canvas canvas) {
    int saved = canvas.save();
    canvas.rotate(mTrimRotation, mRectF.centerX(), mRectF.centerY());

    float startAngle = (mTrimStart + mTrimOffset) * 360.0f - 90;
    float sweepAngle = (mTrimEnd - mTrimStart) * 360.0f;
    canvas.drawArc(mRectF, startAngle, sweepAngle, false, mPaint);

    canvas.restoreToCount(saved);/*from w ww. j a v  a 2s . co  m*/

    if (mShouldStartAnimationDrawable) {
        mShouldStartAnimationDrawable = false;
        startAnimationActually();
    }
}

---

From source file:org.akvo.caddisfly.sensor.colorimetry.strip.widget.PercentageMeterView.java

@Override
public void onDraw(@NonNull Canvas canvas) {

    if (Float.isNaN(percentage)) {
        return;/*from   ww  w.ja  v  a 2s  .c om*/
    }

    double number = (100 - percentage) * NUMBER_OF_BARS * PERCENT;

    canvas.save();

    // Set each dot's diameter to half the canvas height
    canvas.translate(
            canvas.getWidth() / 2f - ((canvas.getHeight() / 2f + GUTTER_SPACE) * ((NUMBER_OF_BARS - 1) / 2f)),
            0);

    for (double i = 0; i < NUMBER_OF_BARS; i++) {

        // Reset color
        paint.setColor(Color.LTGRAY);

        if (number >= 0) {
            if (i < 2) {
                // Red if number is lower than i + 1
                // 2 red dots if number < 1 or 1 red dot if number > 1
                if (number <= i + 1) {
                    paint.setColor(red);
                }
            } else if (i < 4) {
                // Orange if number between 1 and 4
                // if number == 1.5 then 1 red followed by orange dot
                // if number == 2.5 then 2 orange dots
                // if number == 3.5 then 1 orange dot
                if (number >= i - 1 && number <= i + 2) {
                    paint.setColor(orange);
                }
            } else {
                if (number > i) {
                    // Green if number larger than 3 but yellow if number exceeds optimum
                    if (number > NUMBER_OF_BARS) {
                        paint.setColor(Color.YELLOW);
                    } else {
                        paint.setColor(green);
                    }
                }
            }
        }

        canvas.drawCircle(0, canvas.getHeight() / 2f, canvas.getHeight() / 4f, paint);

        // Position next circle
        canvas.translate(canvas.getHeight() / 2f + GUTTER_SPACE, 0);
    }

    canvas.restore();

    super.onDraw(canvas);
}

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From source file:cl.monsoon.s1next.widget.BezelImageView.java

@Override
protected void onDraw(@NonNull Canvas canvas) {
    if (mBounds == null) {
        return;//from w  w w .j  a va  2  s  .  c om
    }

    int width = mBounds.width();
    int height = mBounds.height();
    if (width == 0 || height == 0) {
        return;
    }

    if (!mCacheValid || mCachedWidth != width || mCachedHeight != height) {
        // need to redraw the cache
        if (mCachedWidth == width && mCachedHeight == height) {
            // have a correct-sized bitmap cache already allocated
            // just erase it
            mCacheBitmap.eraseColor(Color.TRANSPARENT);
        } else {
            // allocate a new bitmap with the correct dimensions
            mCacheBitmap.recycle();
            //noinspection AndroidLintDrawAllocation
            mCacheBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            mCachedWidth = width;
            mCachedHeight = height;
        }

        Canvas cacheCanvas = new Canvas(mCacheBitmap);
        if (mMaskDrawable != null) {
            int saveCount = cacheCanvas.save();
            mMaskDrawable.draw(cacheCanvas);
            cacheCanvas.saveLayer(mBoundsF, mMaskedPaint,
                    Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG);
            super.onDraw(cacheCanvas);
            cacheCanvas.restoreToCount(saveCount);
        } else {
            super.onDraw(cacheCanvas);
        }

        if (mBorderDrawable != null) {
            mBorderDrawable.draw(cacheCanvas);
        }
    }

    // draw from cache
    canvas.drawBitmap(mCacheBitmap, mBounds.left, mBounds.top, null);
}

---

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());
        }/*from   w ww  .j av a  2s .c  o m*/
        //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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