Example usage for android.graphics Canvas restoreToCount

List of usage examples for android.graphics Canvas restoreToCount

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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:mega.privacy.android.app.components.SlidingUpPanelLayout.java

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

    if (mSlideableView != child) { // if main view
        // Clip against the slider; no sense drawing what will immediately be covered,
        // Unless the panel is set to overlay content
        canvas.getClipBounds(mTmpRect);/*from  w  w  w . j  a v  a 2 s. c om*/
        if (!mOverlayContent) {
            if (mIsSlidingUp) {
                mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
            } else {
                mTmpRect.top = Math.max(mTmpRect.top, mSlideableView.getBottom());
            }
        }
        if (mClipPanel) {
            canvas.clipRect(mTmpRect);
        }

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

        if (mCoveredFadeColor != 0 && mSlideOffset > 0) {
            final int baseAlpha = (mCoveredFadeColor & 0xff000000) >>> 24;
            final int imag = (int) (baseAlpha * mSlideOffset);
            final int color = imag << 24 | (mCoveredFadeColor & 0xffffff);
            mCoveredFadePaint.setColor(color);
            canvas.drawRect(mTmpRect, mCoveredFadePaint);
        }
    } else {
        result = super.drawChild(canvas, child, drawingTime);
    }

    canvas.restoreToCount(save);

    return result;
}

From source file:lewa.support.v7.widget.SwitchCompat.java

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

    final Rect padding = mTempRect;
    final Drawable trackDrawable = mTrackDrawable;
    if (trackDrawable != null) {
        trackDrawable.getPadding(padding);
    } else {//from  ww w .j av  a 2  s .  c o  m
        padding.setEmpty();
    }

    final int switchTop = mSwitchTop;
    final int switchBottom = mSwitchBottom;
    final int switchInnerTop = switchTop + padding.top;
    final int switchInnerBottom = switchBottom - padding.bottom;

    final Drawable thumbDrawable = mThumbDrawable;
    if (trackDrawable != null) {
        trackDrawable.draw(canvas);
    }

    final int saveCount = canvas.save();

    if (thumbDrawable != null) {
        thumbDrawable.draw(canvas);
    }

    final Layout switchText = getTargetCheckedState() ? mOnLayout : mOffLayout;
    if (switchText != null) {
        final int drawableState[] = getDrawableState();
        if (mTextColors != null) {
            mTextPaint.setColor(mTextColors.getColorForState(drawableState, 0));
        }
        mTextPaint.drawableState = drawableState;

        final int cX;
        if (thumbDrawable != null) {
            final Rect bounds = thumbDrawable.getBounds();
            cX = bounds.left + bounds.right;
        } else {
            cX = getWidth();
        }

        final int left = cX / 2 - switchText.getWidth() / 2;
        final int top = (switchInnerTop + switchInnerBottom) / 2 - switchText.getHeight() / 2;
        canvas.translate(left, top);
        switchText.draw(canvas);
    }

    canvas.restoreToCount(saveCount);
}

From source file:com.actionbarsherlock.custom.widget.VerticalDrawerLayout.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final int width = getWidth();
    final boolean drawingContent = isContentView(child);
    int clipTop = 0, clipBottom = getHeight();

    final int restoreCount = canvas.save();
    if (drawingContent) {
        final int childCount = getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View v = getChildAt(i);
            if (v == child || v.getVisibility() != VISIBLE || !hasOpaqueBackground(v) || !isDrawerView(v)
                    || v.getWidth() < width) {
                continue;
            }//from www . j  a  v  a  2  s . co m

            if (checkDrawerViewGravity(v, Gravity.TOP)) {
                final int vbottom = v.getBottom();
                if (vbottom > clipTop)
                    clipTop = vbottom;
            } else {
                final int vtop = v.getTop();
                if (vtop < clipBottom)
                    clipBottom = vtop;
            }
        }
        canvas.clipRect(0, clipTop, getWidth(), clipBottom);
    }
    final boolean result = super.drawChild(canvas, child, drawingTime);
    canvas.restoreToCount(restoreCount);

    if (mScrimOpacity > 0 && drawingContent) {
        final int baseAlpha = (mScrimColor & 0xff000000) >>> 24;
        final int imag = (int) (baseAlpha * mScrimOpacity);
        final int color = imag << 24 | (mScrimColor & 0xffffff);
        mScrimPaint.setColor(color);

        canvas.drawRect(0, clipTop, getWidth(), clipBottom, mScrimPaint);
    } else if (mShadowTop != null && checkDrawerViewGravity(child, Gravity.TOP)) {
        final int shadowHeight = mShadowTop.getIntrinsicHeight();
        final int childBottom = child.getBottom();
        final int drawerPeekDistance = mTopDragger.getEdgeSize();
        final float alpha = Math.max(0, Math.min((float) childBottom / drawerPeekDistance, 1.f));
        mShadowTop.setBounds(child.getLeft(), childBottom, child.getRight(), childBottom + shadowHeight);
        mShadowTop.setAlpha((int) (0xff * alpha));
        mShadowTop.draw(canvas);
    } else if (mShadowBottom != null && checkDrawerViewGravity(child, Gravity.BOTTOM)) {
        final int shadowHeight = mShadowBottom.getIntrinsicHeight();
        final int childTop = child.getTop();
        final int showing = getHeight() - childTop;
        final int drawerPeekDistance = mBottomDragger.getEdgeSize();
        final float alpha = Math.max(0, Math.min((float) showing / drawerPeekDistance, 1.f));
        mShadowTop.setBounds(child.getLeft(), childTop - shadowHeight, child.getRight(), childTop);
        mShadowBottom.setAlpha((int) (0xff * alpha));
        mShadowBottom.draw(canvas);
    }
    return result;
}

From source file:com.ruesga.timelinechart.TimelineChartView.java

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

    if (mEdgeEffectLeft != null && !mEdgeEffectLeft.isFinished()) {
        final int restoreCount = c.save();
        c.rotate(270);//from  w ww  .  ja  v  a2 s. c  om
        c.translate(-mGraphArea.height() - mGraphArea.top, mGraphArea.left);
        mEdgeEffectLeft.setSize((int) mGraphArea.height(), (int) mGraphArea.width());
        needsInvalidate = mEdgeEffectLeft.draw(c);
        c.restoreToCount(restoreCount);
    }

    if (mEdgeEffectRight != null && !mEdgeEffectRight.isFinished()) {
        final int restoreCount = c.save();
        c.rotate(90);
        c.translate(mGraphArea.top, -getWidth() + (getWidth() - mGraphArea.right));
        mEdgeEffectRight.setSize((int) mGraphArea.height(), (int) mGraphArea.width());
        needsInvalidate |= mEdgeEffectRight.draw(c);
        c.restoreToCount(restoreCount);
    }

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

From source file:com.abewy.android.apps.klyph.widget.KlyphDrawerLayout.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final int height = getHeight();
    final boolean drawingContent = isContentView(child);
    int clipLeft = 0, clipRight = getWidth();

    final int restoreCount = canvas.save();
    if (drawingContent) {
        final int childCount = getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View v = getChildAt(i);
            if (v == child || v.getVisibility() != VISIBLE || !hasOpaqueBackground(v) || !isDrawerView(v)
                    || v.getHeight() < height) {
                continue;
            }/*from  www .  j ava  2s  . c  o m*/

            if (checkDrawerViewGravity(v, Gravity.LEFT)) {
                final int vright = v.getRight();
                if (vright > clipLeft)
                    clipLeft = vright;
            } else {
                final int vleft = v.getLeft();
                if (vleft < clipRight)
                    clipRight = vleft;
            }
        }
        canvas.clipRect(clipLeft, 0, clipRight, getHeight());
    }
    final boolean result = super.drawChild(canvas, child, drawingTime);
    canvas.restoreToCount(restoreCount);

    if (mScrimOpacity > 0 && drawingContent) {
        final int baseAlpha = (mScrimColor & 0xff000000) >>> 24;
        final int imag = (int) (baseAlpha * mScrimOpacity);
        final int color = imag << 24 | (mScrimColor & 0xffffff);
        mScrimPaint.setColor(color);

        canvas.drawRect(clipLeft, 0, clipRight, getHeight(), mScrimPaint);
    } else if (mShadowLeft != null && checkDrawerViewGravity(child, Gravity.LEFT)) {
        final int shadowWidth = mShadowLeft.getIntrinsicWidth();
        final int childRight = child.getRight();
        final int drawerPeekDistance = mLeftDragger.getEdgeSize();
        final float alpha = Math.max(0, Math.min((float) childRight / drawerPeekDistance, 1.f));
        mShadowLeft.setBounds(childRight, child.getTop(), childRight + shadowWidth, child.getBottom());
        mShadowLeft.setAlpha((int) (0xff * alpha));
        mShadowLeft.draw(canvas);
    } else if (mShadowRight != null && checkDrawerViewGravity(child, Gravity.RIGHT)) {
        final int shadowWidth = mShadowRight.getIntrinsicWidth();
        final int childLeft = child.getLeft();
        final int showing = getWidth() - childLeft;
        final int drawerPeekDistance = mRightDragger.getEdgeSize();
        final float alpha = Math.max(0, Math.min((float) showing / drawerPeekDistance, 1.f));
        mShadowRight.setBounds(childLeft - shadowWidth, child.getTop(), childLeft, child.getBottom());
        mShadowRight.setAlpha((int) (0xff * alpha));
        mShadowRight.draw(canvas);
    }
    return result;
}

From source file:com.lansun.qmyo.view.DrawerLayout.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final int height = getHeight();
    final boolean drawingContent = isContentView(child);
    int clipLeft = 0, clipRight = getWidth();

    final int restoreCount = canvas.save();
    if (drawingContent) {
        final int childCount = getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View v = getChildAt(i);
            if (v == child || v.getVisibility() != VISIBLE || !hasOpaqueBackground(v) || !isDrawerView(v)
                    || v.getHeight() < height) {
                continue;
            }/*w  ww.  j a va  2s.co  m*/

            if (checkDrawerViewGravity(v, Gravity.LEFT)) {
                final int vright = v.getRight();
                if (vright > clipLeft)
                    clipLeft = vright;
            } else {
                final int vleft = v.getLeft();
                if (vleft < clipRight)
                    clipRight = vleft;
            }
        }
        canvas.clipRect(clipLeft, 0, clipRight, getHeight());
    }
    final boolean result = super.drawChild(canvas, child, drawingTime);
    canvas.restoreToCount(restoreCount);

    if (mScrimOpacity > 0 && drawingContent) {
        // final int baseAlpha = (mScrimColor & 0xff000000) >>> 24;
        // final int imag = (int) (baseAlpha * mScrimOpacity);
        // final int color = imag << 24 | (mScrimColor & 0xffffff);
        // mScrimPaint.setColor(color);
        //
        // canvas.drawRect(clipLeft, 0, clipRight, getHeight(), mScrimPaint);
    } else if (mShadowLeft != null && checkDrawerViewGravity(child, Gravity.LEFT)) {
        final int shadowWidth = mShadowLeft.getIntrinsicWidth();
        final int childRight = child.getRight();
        final int drawerPeekDistance = mLeftDragger.getEdgeSize();
        final float alpha = Math.max(0, Math.min((float) childRight / drawerPeekDistance, 1.f));
        mShadowLeft.setBounds(childRight, child.getTop(), childRight + shadowWidth, child.getBottom());
        mShadowLeft.setAlpha((int) (0xff * alpha));
        mShadowLeft.draw(canvas);
    } else if (mShadowRight != null && checkDrawerViewGravity(child, Gravity.RIGHT)) {
        final int shadowWidth = mShadowRight.getIntrinsicWidth();
        final int childLeft = child.getLeft();
        final int showing = getWidth() - childLeft;
        final int drawerPeekDistance = mRightDragger.getEdgeSize();
        final float alpha = Math.max(0, Math.min((float) showing / drawerPeekDistance, 1.f));
        mShadowRight.setBounds(childLeft - shadowWidth, child.getTop(), childLeft, child.getBottom());
        mShadowRight.setAlpha((int) (0xff * alpha));
        mShadowRight.draw(canvas);
    }
    return result;
}

From source file:co.codecrunch.musicplayerlite.slidinguppanelhelper.SlidingUpPanelLayout.java

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

    if (mSlideableView != child) { // if main view
        // Clip against the slider; no sense drawing what will immediately
        // be covered,
        // Unless the panel is set to overlay content
        canvas.getClipBounds(mTmpRect);/*from   w  ww . j  a  va  2  s . com*/
        if (!mOverlayContent) {
            if (mIsSlidingUp) {
                mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
            } else {
                mTmpRect.top = Math.max(mTmpRect.top, mSlideableView.getBottom());
            }
        }
        if (mClipPanel) {
            canvas.clipRect(mTmpRect);
        }

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

        if (mCoveredFadeColor != 0 && mSlideOffset > 0) {
            final int baseAlpha = (mCoveredFadeColor & 0xff000000) >>> 24;
            final int imag = (int) (baseAlpha * mSlideOffset);
            final int color = imag << 24 | (mCoveredFadeColor & 0xffffff);
            mCoveredFadePaint.setColor(color);
            canvas.drawRect(mTmpRect, mCoveredFadePaint);
        }
    } else {
        result = super.drawChild(canvas, child, drawingTime);
    }

    canvas.restoreToCount(save);

    return result;
}

From source file:com.shizhefei.view.largeimage.UpdateImageView.java

@SuppressLint("DrawAllocation")
@Override/*from   w  w w.j  a  va2 s .c  o m*/
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (getMeasuredWidth() == 0) {
        return;
    }
    if (mDrawable != null) {
        mDrawable.setBounds((int) mOffsetX, (int) mOffsetY, (int) (getMeasuredWidth() * mScale),
                (int) (getMeasuredHeight() * mScale));
        mDrawable.draw(canvas);
    } else if (mFactory != null) {
        Rect visibilityRect = tempRect;
        getVisibilityRect(visibilityRect);
        float width = mScale * getWidth();
        int imgWidth = imageBlockLoader.getWidth();

        float imageScale = imgWidth / width;

        // ?
        Rect imageRect = new Rect();
        imageRect.left = (int) Math.ceil((visibilityRect.left - mOffsetX) * imageScale);
        imageRect.top = (int) Math.ceil((visibilityRect.top - mOffsetY) * imageScale);
        imageRect.right = (int) Math.ceil((visibilityRect.right - mOffsetX) * imageScale);
        imageRect.bottom = (int) Math.ceil((visibilityRect.bottom - mOffsetY) * imageScale);

        List<DrawData> drawData = imageBlockLoader.getDrawData(imageScale, imageRect);

        if (drawData.isEmpty()) {
            if (defaultDrawable != null) {
                int height = (int) (1.0f * defaultDrawable.getIntrinsicHeight()
                        / defaultDrawable.getIntrinsicWidth() * getMeasuredWidth());
                int offset = (getMeasuredHeight() - height) / 2;
                defaultDrawable.setBounds((int) mOffsetX, (int) mOffsetY + offset,
                        (int) (getMeasuredWidth() * mScale), (int) (height * mScale));
                defaultDrawable.draw(canvas);
            }
        } else {
            int saveCount = canvas.save();
            for (DrawData data : drawData) {
                Rect drawRect = data.imageRect;
                drawRect.left = (int) (Math.ceil(drawRect.left / imageScale) + mOffsetX);
                drawRect.top = (int) (Math.ceil(drawRect.top / imageScale) + mOffsetY);
                drawRect.right = (int) (Math.ceil(drawRect.right / imageScale) + mOffsetX);
                drawRect.bottom = (int) (Math.ceil(drawRect.bottom / imageScale) + mOffsetY);
                canvas.drawBitmap(data.bitmap, data.srcRect, drawRect, null);
            }
            canvas.restoreToCount(saveCount);
        }
    }
}

From source file:com.chenglong.muscle.ui.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);/*from  w ww.  j a v a2 s  .c om*/
            canvas.translate(-height + getPaddingTop(), 0);
            mLeftEdge.setSize(height, getWidth());
            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();
            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();
    }
}

From source file:lagerimage.nicksong.view.largeimage.UpdateImageView.java

@SuppressLint("DrawAllocation")
@Override//from  w  w  w  .j  a  v  a 2 s  . co m
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (getMeasuredWidth() == 0) {
        return;
    }
    if (mDrawable != null) {
        mDrawable.setBounds((int) mOffsetX, (int) mOffsetY, (int) (getMeasuredWidth() * mScale),
                (int) (getMeasuredHeight() * mScale));
        mDrawable.draw(canvas);
    } else if (mFactory != null) {
        Rect visibilityRect = tempRect;
        getVisibilityRect(visibilityRect);
        float width = mScale * getWidth();
        int imgWidth = imageBlockLoader.getWidth();

        float imageScale = imgWidth / width;

        // ?
        Rect imageRect = new Rect();
        imageRect.left = (int) Math.ceil((visibilityRect.left - mOffsetX) * imageScale);
        imageRect.top = (int) Math.ceil((visibilityRect.top - mOffsetY) * imageScale);
        imageRect.right = (int) Math.ceil((visibilityRect.right - mOffsetX) * imageScale);
        imageRect.bottom = (int) Math.ceil((visibilityRect.bottom - mOffsetY) * imageScale);

        List<BlockImageLoader.DrawData> drawData = imageBlockLoader.getDrawData(imageScale, imageRect);

        if (drawData.isEmpty()) {
            if (defaultDrawable != null) {
                int height = (int) (1.0f * defaultDrawable.getIntrinsicHeight()
                        / defaultDrawable.getIntrinsicWidth() * getMeasuredWidth());
                int offset = (getMeasuredHeight() - height) / 2;
                defaultDrawable.setBounds((int) mOffsetX, (int) mOffsetY + offset,
                        (int) (getMeasuredWidth() * mScale), (int) (height * mScale));
                defaultDrawable.draw(canvas);
            }
        } else {
            int saveCount = canvas.save();
            for (BlockImageLoader.DrawData data : drawData) {
                Rect drawRect = data.imageRect;
                drawRect.left = (int) (Math.ceil(drawRect.left / imageScale) + mOffsetX);
                drawRect.top = (int) (Math.ceil(drawRect.top / imageScale) + mOffsetY);
                drawRect.right = (int) (Math.ceil(drawRect.right / imageScale) + mOffsetX);
                drawRect.bottom = (int) (Math.ceil(drawRect.bottom / imageScale) + mOffsetY);
                canvas.drawBitmap(data.bitmap, data.srcRect, drawRect, null);
            }
            canvas.restoreToCount(saveCount);
        }
    }
}