Example usage for android.graphics Canvas restoreToCount

Introduction

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

Prototype

public void restoreToCount(int saveCount) 

Source Link

Document

Efficient way to pop any calls to save() that happened after the save count reached saveCount.

Usage

From source file:ticwear.design.widget.CoordinatorLayout.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);
    if (mEdgeGlowTop != null) {
        if (!mEdgeGlowTop.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();

            int edgeY = Math.min(0, getScrollY());
            canvas.translate(0, edgeY);/*from  w  ww  .j a v  a  2s.co  m*/
            mEdgeGlowTop.setSize(width, getHeight());
            if (mEdgeGlowTop.draw(canvas)) {
                invalidate(0, 0, getWidth(), mEdgeGlowTop.getMaxHeight() + getPaddingTop());
            }
            canvas.restoreToCount(restoreCount);
        }
        if (!mEdgeGlowBottom.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight();

            int edgeX = -width;
            int edgeY = Math.max(height, getScrollY() + height);
            canvas.translate(edgeX, edgeY);
            canvas.rotate(180, width, 0);
            mEdgeGlowBottom.setSize(width, height);
            if (mEdgeGlowBottom.draw(canvas)) {
                invalidate(0, getHeight() - getPaddingBottom() - mEdgeGlowBottom.getMaxHeight(), getWidth(),
                        getHeight());
            }
            canvas.restoreToCount(restoreCount);
        }
    }
}

---

From source file:com.gelakinetic.mtgfam.helpers.IndeterminateProgressBar.java

public void draw(Canvas canvas) {
    final int width = mBounds.width();
    final int height = mBounds.height();
    final int cx = width / 2;
    final int cy = height / 2;
    int restoreCount = canvas.save();
    canvas.clipRect(mBounds);//from w  ww  . java2  s . com

    if (mRunning || (mFinishTime > 0)) {
        long now = AnimationUtils.currentAnimationTimeMillis();
        long elapsed = (now - mStartTime) % ANIMATION_DURATION_MS;
        float rawProgress = (elapsed / (ANIMATION_DURATION_MS / 100f));

        // If we're not running anymore, that means we're running through the finish animation.
        if (!mRunning) {
            // If the finish animation is done, don't draw anything, and don't re-post.
            if ((now - mFinishTime) >= FINISH_ANIMATION_DURATION_MS) {
                mFinishTime = 0;
                return;
            }

            // Otherwise, use a 0 opacity alpha layer to clear the animation
            // from the inside out. This layer will prevent the circles from
            // drawing within its bounds.
            long finishElapsed = (now - mFinishTime) % FINISH_ANIMATION_DURATION_MS;
            float finishProgress = (finishElapsed / (FINISH_ANIMATION_DURATION_MS / 100f));
            float pct = (finishProgress / 100f);
            // Radius of the circle is half of the screen.
            float clearRadius = width / 2 * INTERPOLATOR.getInterpolation(pct);
            mClipRect.set(cx - clearRadius, 0, cx + clearRadius, height);
            canvas.saveLayerAlpha(mClipRect, 0, 0);
        }

        if (rawProgress >= 0 && rawProgress < 25) {
            canvas.drawColor(mColor4);
        } else if (rawProgress >= 25 && rawProgress < 50) {
            canvas.drawColor(mColor1);
        } else if (rawProgress >= 50 && rawProgress < 75) {
            canvas.drawColor(mColor2);
        } else {
            canvas.drawColor(mColor3);
        }

        // Then draw up to 4 overlapping concentric circles of varying radii, based on how far
        // along we are in the cycle.
        // progress 0-50 draw mColor2
        // progress 25-75 draw mColor3
        // progress 50-100 draw mColor4
        // progress 75 (wrap to 25) draw mColor1
        if ((rawProgress >= 0 && rawProgress <= 25)) {
            float pct = (((rawProgress + 25) * 2) / 100f);
            drawCircle(canvas, cx, cy, mColor1, pct);
        }
        if (rawProgress >= 0 && rawProgress <= 50) {
            float pct = ((rawProgress * 2) / 100f);
            drawCircle(canvas, cx, cy, mColor2, pct);
        }
        if (rawProgress >= 25 && rawProgress <= 75) {
            float pct = (((rawProgress - 25) * 2) / 100f);
            drawCircle(canvas, cx, cy, mColor3, pct);
        }
        if (rawProgress >= 50 && rawProgress <= 100) {
            float pct = (((rawProgress - 50) * 2) / 100f);
            drawCircle(canvas, cx, cy, mColor4, pct);
        }
        if ((rawProgress >= 75 && rawProgress <= 100)) {
            float pct = (((rawProgress - 75) * 2) / 100f);
            drawCircle(canvas, cx, cy, mColor1, pct);
        }
        // Keep running until we finish out the last cycle.
        ViewCompat.postInvalidateOnAnimation(mParent);
    }
    canvas.restoreToCount(restoreCount);
}

---

From source file:eu.kanade.tachiyomi.ui.reader.viewer.pager.vertical.VerticalViewPagerImpl.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 (!mTopEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.translate(getPaddingLeft(), mFirstOffset * height);
            mTopEdge.setSize(width, height);
            needsInvalidate |= mTopEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }/*from w ww . j  a v a 2  s .com*/
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.rotate(180);
            canvas.translate(-width - getPaddingLeft(), -(mLastOffset + 1) * height);
            mBottomEdge.setSize(width, height);
            needsInvalidate |= mBottomEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.my.infiniteviewpager.view.InfiniteViewPager.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)) {
        if (!mLeftEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();
            final int width = getWidth();

            canvas.rotate(270);/*from w  w w.  j  a v  a2 s. co m*/
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            needsInvalidate |= mLeftEdge.draw(canvas);
            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(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.suning.boxcontroller.control.ExViewPager.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();
            final int width = getWidth();

            canvas.rotate(ANGLE_ONE);/*ww w  . jav a  2 s . c o  m*/
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            needsInvalidate |= mLeftEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
        if (!mRightEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();

            canvas.rotate(ANGLE_TWO);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.bloomimpact.bancus.ui.views.VerticalViewPager.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 (!mTopEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();
            final int height = getHeight();

            canvas.rotate(270);//from w  w  w. ja v a  2 s  . c  o m
            canvas.translate(mFirstOffset * height, -width + getPaddingLeft());
            mTopEdge.setSize(width, height);
            needsInvalidate |= mTopEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.rotate(90);
            canvas.translate(-(mLastOffset + 1) * height, -getPaddingLeft());
            mBottomEdge.setSize(width, height);
            needsInvalidate |= mBottomEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:net.opacapp.multilinecollapsingtoolbar.CollapsingTextHelper.java

public void draw(Canvas canvas) {
    final int saveCount = canvas.save();

    if (mTextToDraw != null && mDrawTitle) {
        float x = mCurrentDrawX;
        float y = mCurrentDrawY;

        final boolean drawTexture = mUseTexture && mExpandedTitleTexture != null;
        final float ascent;
        // MODIFICATION: removed now unused "descent" variable declaration

        // Update the TextPaint to the current text size
        mTextPaint.setTextSize(mCurrentTextSize);

        // BEGIN MODIFICATION: new drawing code
        if (drawTexture) {
            ascent = 0;/*ww  w .ja v  a  2 s . co m*/
        } else {
            ascent = mTextPaint.ascent() * mScale;
        }

        if (DEBUG_DRAW) {
            // Just a debug tool, which drawn a Magneta rect in the text bounds
            canvas.drawRect(mCurrentBounds.left, y, mCurrentBounds.right, y + mTextLayout.getHeight() * mScale,
                    DEBUG_DRAW_PAINT);
        }
        if (mScale != 1f) {
            canvas.scale(mScale, mScale, x, y);
        }

        // Compute where to draw mTextLayout for this frame
        final float currentExpandedX = mCurrentDrawX + mTextLayout.getLineLeft(0) - mExpandedFirstLineDrawX * 2;
        if (drawTexture) {
            // If we should use a texture, draw it instead of text
            // Expanded text
            mTexturePaint.setAlpha((int) (mExpandedTextBlend * 255));
            canvas.drawBitmap(mExpandedTitleTexture, currentExpandedX, y, mTexturePaint);
            // Collapsed text
            mTexturePaint.setAlpha((int) (mCollapsedTextBlend * 255));
            canvas.drawBitmap(mCollapsedTitleTexture, x, y, mTexturePaint);
            // Cross-section between both texts (should stay at alpha = 255)
            mTexturePaint.setAlpha(255);
            canvas.drawBitmap(mCrossSectionTitleTexture, x, y, mTexturePaint);
        } else {
            // positon expanded text appropriately
            canvas.translate(currentExpandedX, y);
            // Expanded text
            mTextPaint.setAlpha((int) (mExpandedTextBlend * 255));
            mTextLayout.draw(canvas);

            // position the overlays
            canvas.translate(x - currentExpandedX, 0);

            // Collapsed text
            mTextPaint.setAlpha((int) (mCollapsedTextBlend * 255));
            canvas.drawText(mTextToDrawCollapsed, 0, mTextToDrawCollapsed.length(), 0, -ascent / mScale,
                    mTextPaint);
            // Cross-section between both texts (should stay at alpha = 255)
            mTextPaint.setAlpha(255);
            canvas.drawText(mTextToDraw, mTextLayout.getLineStart(0), mTextLayout.getLineEnd(0), 0,
                    -ascent / mScale, mTextPaint);
        }
        // END MODIFICATION
    }
    canvas.restoreToCount(saveCount);
}

---

From source file:com.support.chikeong.centerviewpager.lib.CenterViewPager.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();
            final int width = getWidth();

            canvas.rotate(270);// w  ww  .j a va2 s. c  o m
            canvas.translate(-height + getPaddingTop(),
                    mFirstOffset * width - (getWidth() - getWidth() * mAdapter.getPageWidth(mCurItem)) / 2);
            mLeftEdge.setSize(height, width);

            needsInvalidate |= mLeftEdge.draw(canvas);
            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(), -(mLastOffset + 1) * width
                    - (getWidth() - getWidth() * mAdapter.getPageWidth(mCurItem)) / 2);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.dian.diabetes.widget.VerticalViewPager.java

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

    //jelle disabled edge effect
    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {

        final int height = getHeight();
        final int width = getWidth() - getPaddingLeft() - getPaddingRight();

        if (!mTopEdge.isFinished()) {
            mTopEdge.setSize(width, height);
            needsInvalidate |= mTopEdge.draw(canvas);
        }/*  w  w  w.  j  ava 2  s . co m*/
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            canvas.translate(-width + getPaddingLeft(), getScrollY() + height);
            canvas.rotate(180, width, 0);
            mBottomEdge.setSize(width, height);

            needsInvalidate |= mBottomEdge.draw(canvas);

            canvas.restoreToCount(restoreCount);
        }
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.ifnoif.androidtestdemo.customview.VViewPager.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();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.rotate(270);/*from ww w .j a  va2s .c  o  m*/
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            needsInvalidate |= mLeftEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
        if (!mRightEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();

            canvas.rotate(180);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

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