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:com.ylw.split.splitview.view.SplitView.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);
    //            if (isLayoutRtlSupport()) {
    //                mTmpRect.left = Math.max(mTmpRect.left, mSlideableView.getRight());
    //            } else {
    //                mTmpRect.right = Math.min(mTmpRect.right, mSlideableView.getLeft());
    //            }
    //            canvas.clipRect(mTmpRect);
    //        }//www.j  av  a 2  s.  com

    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.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);//from w ww. ja  v a  2 s  .c om

        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;
}

---

From source file:com.quran.labs.androidquran.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,
        // 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());
            }//w  ww. j  a  v  a 2s  .com
            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: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 w w .  jav a2s.  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;
}

---

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);/*from  w w  w .  jav a2  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;
}

---

From source file:com.waz.zclient.pages.main.conversationpager.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 (canSlide && !lp.slideable && slideableView != null) {
        // Clip against the slider; no sense drawing what will immediately be covered.
        canvas.getClipBounds(tmpRect);//from w  ww  .j  a v a 2  s  . c om
        if (isLayoutRtlSupport()) {
            tmpRect.left = Math.max(tmpRect.left, slideableView.getRight());
        } else {
            tmpRect.right = Math.min(tmpRect.right, slideableView.getLeft());
        }
        canvas.clipRect(tmpRect);
    }

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && slideOffset > 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 {
                Timber.e("drawChild: child view %s returned null drawing cache", child);
                result = super.drawChild(canvas, child, drawingTime);
            }
        } else {
            if (child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(false);
            }
            result = super.drawChild(canvas, child, drawingTime);
        }
    }

    canvas.restoreToCount(save);

    return result;
}

---

From source file:com.appeaser.sublimepickerlibrary.timepicker.RadialTimePickerView.java

private void drawMinutes(Canvas canvas, float alphaMod) {
    final int minutesAlpha = (int) (mAlpha[MINUTES].getValue() * alphaMod + 0.5f);
    if (minutesAlpha > 0) {
        // Draw the minute selector under the elements.
        drawSelector(canvas, MINUTES, mSelectorPath, alphaMod);

        // Exclude the selector region, then draw minutes with no
        // activated states.
        canvas.save(Canvas.CLIP_SAVE_FLAG);
        canvas.clipPath(mSelectorPath, Region.Op.DIFFERENCE);
        drawTextElements(canvas, mTextSize[MINUTES], mTypeface, mTextColor[MINUTES], mMinutesText,
                mOuterTextX[MINUTES], mOuterTextY[MINUTES], mPaint[MINUTES], minutesAlpha, false, 0, false);
        canvas.restore();/*w ww  .  j  a va2 s  .com*/

        // Intersect the selector region, then draw minutes with only
        // activated states.
        canvas.save(Canvas.CLIP_SAVE_FLAG);
        canvas.clipPath(mSelectorPath, Region.Op.INTERSECT);
        drawTextElements(canvas, mTextSize[MINUTES], mTypeface, mTextColor[MINUTES], mMinutesText,
                mOuterTextX[MINUTES], mOuterTextY[MINUTES], mPaint[MINUTES], minutesAlpha, true,
                mSelectionDegrees[MINUTES], true);
        canvas.restore();
    }
}

---

From source file:com.example.zhaozhu.practisecustomview.customviewgroup.HSlidingPaneLayout.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);

    if (this.mCanSlide && !lp.slideable && (this.mSlideableView != null)) {
        // Clip against the slider; no sense drawing what will immediately
        // be covered.
        canvas.getClipBounds(this.mTmpRect);
        this.mTmpRect.right = Math.min(this.mTmpRect.right, this.mSlideableView.getLeft());
        canvas.clipRect(this.mTmpRect);
    }//from  w  ww .  ja  va  2s .c  o  m

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && (this.mSlideOffset > 0)) {
            if (!child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(true);
            }
            Bitmap cache = child.getDrawingCache();
            if (cache != null && !cache.isRecycled()) {
                canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
                result = false;
            } else {
                Log.e(HSlidingPaneLayout.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;
}

---

From source file:rp3.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   w ww . jav  a2  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;
}

---

From source file:com.example.zhaozhu.practisecustomview.customviewgroup.HSlidingPaneLayout2.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);

    if (this.mCanSlide && !lp.slideable && (this.mSlideableView != null)) {
        // Clip against the slider; no sense drawing what will immediately
        // be covered.
        canvas.getClipBounds(this.mTmpRect);
        this.mTmpRect.right = Math.min(this.mTmpRect.right, this.mSlideableView.getLeft());
        canvas.clipRect(this.mTmpRect);
    }//from   w  w w. j  a v a2s. c o m

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && (this.mSlideOffset > 0)) {
            if (!child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(true);
            }
            Bitmap cache = child.getDrawingCache();
            if (cache != null && !cache.isRecycled()) {
                canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
                result = false;
            } else {
                Log.e(HSlidingPaneLayout2.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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