Example usage for android.graphics Canvas clipRect

Introduction

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

Prototype

public boolean clipRect(@NonNull Rect rect) 

Source Link

Document

Intersect the current clip with the specified rectangle, which is expressed in local coordinates.

Usage

From source file:com.android.dialer.widget.OverlappingPaneLayout.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);//w  w  w  . j a  v  a  2  s. com

        mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
        canvas.clipRect(mTmpRect);
    }

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (child.isDrawingCacheEnabled()) {
            child.setDrawingCacheEnabled(false);
        }
        result = super.drawChild(canvas, child, drawingTime);
    }

    canvas.restoreToCount(save);

    return result;
}

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From source file:org.androfarsh.widget.DragGridLayout.java

private boolean drawChildDrawable(BitmapDrawable childDrawable, Canvas canvas, View child, long drawingTime) {
    canvas.save();/*from  w  w  w .jav a  2 s .  co  m*/
    requestCurrentRect(mTmpRect, child);
    if (child.getAnimation() == null) {
        canvas.clipRect(mTmpRect);
    }

    final boolean result;
    if (mEditMode && (childDrawable != null) && !childDrawable.getBitmap().isRecycled()) {
        childDrawable.setBounds(mTmpRect);
        childDrawable.draw(canvas);
        result = false;
    } else {
        result = super.drawChild(canvas, child, drawingTime);
    }
    canvas.restore();
    return result;
}

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From source file:im.ene.lab.design.widget.coverflow.FeatureCoverFlow.java

@Override
protected void dispatchDraw(Canvas canvas) {
    mInvalidated = false; //last invalidate which marked redrawInProgress, caused this
    // dispatchDraw. Clear flag to prevent creating loop

    mReverseOrderIndex = -1;/*w  w  w.j a va2  s.c  o  m*/

    canvas.getClipBounds(mTempRect);
    mTempRect.top = 0;
    mTempRect.bottom = getHeight();
    canvas.clipRect(mTempRect);

    super.dispatchDraw(canvas);

    if (mScrollToPositionOnNextInvalidate != -1 && mAdapter != null && mAdapter.getCount() > 0) {
        final int lastCenterItemPosition = (mFirstItemPosition + mLastCenterItemIndex) % mAdapter.getCount();
        final int di = lastCenterItemPosition - mScrollToPositionOnNextInvalidate;
        mScrollToPositionOnNextInvalidate = -1;
        if (di != 0) {
            final int dst = (int) (di * mCoverWidth * mSpacing) - mCenterItemOffset;
            scrollBy(-dst, 0);
            shouldRepeat = true;
            postInvalidate();
            return;
        }
    }

    if (mTouchState == TOUCH_STATE_RESTING) {
        if (mAdapter != null) {
            final int lastCenterItemPosition = (mFirstItemPosition + mLastCenterItemIndex)
                    % mAdapter.getCount();
            if (mLastTouchState != TOUCH_STATE_RESTING || mlastCenterItemPosition != lastCenterItemPosition) {
                mLastTouchState = TOUCH_STATE_RESTING;
                mlastCenterItemPosition = lastCenterItemPosition;
                if (mOnScrollPositionListener != null)
                    mOnScrollPositionListener.onScrolledToPosition(lastCenterItemPosition);
            }
        }
    }

    if (mTouchState == TOUCH_STATE_SCROLLING && mLastTouchState != TOUCH_STATE_SCROLLING) {
        mLastTouchState = TOUCH_STATE_SCROLLING;
        if (mOnScrollPositionListener != null)
            mOnScrollPositionListener.onScrolling();
    }
    if (mTouchState == TOUCH_STATE_FLING && mLastTouchState != TOUCH_STATE_FLING) {
        mLastTouchState = TOUCH_STATE_FLING;
        if (mOnScrollPositionListener != null)
            mOnScrollPositionListener.onScrolling();
    }

    //make sure we never stay unaligned after last draw in resting state
    if (mTouchState == TOUCH_STATE_RESTING && mCenterItemOffset != 0) {
        scrollBy(mCenterItemOffset, 0);
        postInvalidate();
    }

    try {
        View v = getChildAt(mLastCenterItemIndex);
        if (v != null)
            v.requestFocus(FOCUS_FORWARD);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:ca.mymenuapp.ui.widgets.SlidingUpPanelLayout.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);

    boolean drawScrim = false;

    if (mCanSlide && !lp.slideable && mSlideableView != null) {
        // Clip against the slider; no sense drawing what will immediately be covered.
        canvas.getClipBounds(mTmpRect);/*from ww w  .ja  v  a  2 s.  c  om*/
        if (mIsSlidingUp) {
            mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
        } else {
            mTmpRect.top = Math.max(mTmpRect.top, mSlideableView.getBottom());
        }
        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;
}

---

From source file:org.androfarsh.widget.DragGridLayout.java

private void drawHighlight(final View child, final Canvas canvas) {
    if ((mHighlightDrawable != null)) {
        requestFreeCellRegion(mDragNode.view);
        if (!requestHoverRect(mTmpRect)) {
            return;
        }//from ww  w  .j a va2  s. c  o  m
        canvas.save();
        canvas.clipRect(mTmpRect);
        mHighlightDrawable.setBounds(mTmpRect);

        mTmpRegion.set(mFreeCellsRegion);
        mTmpRegion.op(mTmpRect, Op.INTERSECT);
        mTmpRegion.getBounds(mTmpRect);

        final boolean allowed = mTmpRegion.isRect() && (child.getWidth() <= mTmpRect.width())
                && (child.getHeight() <= mTmpRect.height());
        final int[] stateSet = new int[] { (allowed ? 1 : -1) * R.attr.state_drop_allow };

        mHighlightDrawable.setState(stateSet);
        mHighlightDrawable.draw(canvas);
        canvas.restore();
    }
}

---

From source file:com.zenithed.core.widget.scaledimageview.ScaledImageView.java

/**
 * Draw method should not be called until the view has dimensions so the first calls are used as triggers to calculate
 * the scaling and tiling required. Once the view is setup, tiles are displayed as they are loaded.
 *//*  www.  j  a  v  a 2 s .c  o  m*/
@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    // If image or view dimensions are not known yet, abort.
    if (mContentWidth == 0 || mContentHeight == 0 || mBitmapRegionDecoder == null || getWidth() == 0
            || getHeight() == 0) {
        return;
    }

    // On first render with no tile map ready, initialise it and kick off async base image loading.
    if (mTileMap == null) {
        initialiseBaseLayer();
        return;
    }

    // On first display of base image set up position, and in other cases make sure scale is correct.
    fitToBounds();

    // Everything is set up and coordinates are valid. Inform subclasses.
    if (!mImageReadyNotified) {
        setEnabled(true);
        onImageReady();
        mImageReadyNotified = true;
    }

    canvas.clipRect(mViewPortRect);

    // Optimum sample size for current scale
    final int sampleSize = Math.min(mFullImageSampleSize,
            calculateInSampleSize((int) (mContentWidth * mScale), (int) (mContentHeight * mScale)));

    // First check for missing tiles - if there are any we need the base layer underneath to avoid gaps
    boolean hasMissingTiles = false;

    final SparseArray<List<Tile>> tileMap = mTileMap;
    final int SIZE = mTileMap.size();

    for (int i = 0; i < SIZE; i++) {
        if (tileMap.keyAt(i) == sampleSize) {
            final List<Tile> tileList = tileMap.valueAt(i);
            for (Tile tile : tileList) {
                if (tile.visible && (tile.loading || tile.bitmap == null)) {
                    hasMissingTiles = true;
                }
            }
        }
    }

    // Render all loaded tiles. LinkedHashMap used for bottom up rendering - lower res tiles underneath.
    for (int i = 0; i < SIZE; i++) {
        if (tileMap.keyAt(i) == sampleSize || hasMissingTiles) {
            final List<Tile> tileList = tileMap.valueAt(i);
            for (Tile tile : tileList) {
                if (!tile.loading && tile.bitmap != null) {
                    canvas.drawBitmap(tile.bitmap, null, convertRect(sourceToViewRect(tile.sRect)),
                            sDrawingPaint);
                }
            }
        }
    }

}

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From source file:org.akop.crosswords.view.CrosswordView.java

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

    if (mPuzzleBitmap != null) {
        canvas.save();//from w  w w.  j  av a2 s  . com
        canvas.clipRect(mContentRect);
        canvas.translate(mBitmapOffset.x, mBitmapOffset.y);
        canvas.scale(mBitmapScale, mBitmapScale);
        canvas.drawBitmap(mPuzzleBitmap, 0, 0, mBitmapPaint);

        canvas.restore();
    }
}

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From source file:cn.emagsoftware.ui.BugFixedSlidingPaneLayout.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);//w ww  . ja  va2  s . c o  m
        mTmpRect.right = Math.min(mTmpRect.right, mSlideableView.getLeft());
        canvas.clipRect(mTmpRect);
    }

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && mSlideOffset > 0) {
            if (!child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(true);
            }
            final Bitmap cache = child.getDrawingCache();
            if (cache != null) {
                canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
                result = false;
            } else {
                Log.e(TAG, "drawChild: child view " + child + " returned null drawing cache");
                result = super.drawChild(canvas, child, drawingTime);
            }
        } else {
            if (child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(false);
            }
            result = super.drawChild(canvas, child, drawingTime);
        }
    }

    canvas.restoreToCount(save);

    return result;
}

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From source file:com.akshay.protocol10.asplayer.widget.SlidingUpPanelLayout.java

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

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

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

    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);
    }

    return result;
}

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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);/*  w ww  . j  a  v a 2  s .  c  o m*/
        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;
}

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