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:com.hippo.largeimageview.LargeImageView.java

@Override
protected void onDraw(Canvas canvas) {
    // Set max bitmap size
    if (mMaxBitmapSize == 0) {
        mMaxBitmapSize = getMaxBitmapSize(canvas);
        if (mImage != null) {
            mImage.setMaxBitmapSize(mMaxBitmapSize);
        }//from w w  w.j ava 2 s.co m
    }

    if (mImage == null || mDst.isEmpty()) {
        return;
    }
    if (mRectDirty) {
        applyRectInWindow();
    }
    if (!mSrcActual.isEmpty()) {
        final int saved = transformCanvas(canvas);
        mImage.draw(canvas, mSrcActual, mDstActual);
        if (saved != 0) {
            canvas.restoreToCount(saved);
        }
    }
}

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From source file:com.shizhefei.view.coolrefreshview.header.JellyHeader.java

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

    int totalDistance = totalDistance();
    int headerHeight;
    int pullHeight;
    int offsetToKeepHeaderWhileLoading = offsetToKeepHeaderWhileLoading();
    if (status == CoolRefreshView.PULL_STATUS_REFRESHING) {
        headerHeight = offsetToKeepHeaderWhileLoading;
        pullHeight = currentDistance;/*  w w w .ja  v  a  2 s  .  co m*/
    } else {
        headerHeight = Math.min(currentDistance / 2, offsetToKeepHeaderWhileLoading);
        pullHeight = currentDistance;
    }
    if (headerHeight == 0) {
        return;
    }

    int saveCount = canvas.save();
    canvas.translate(0, totalDistance - currentDistance);

    final int width = canvas.getWidth();
    //??touchx ????touchx??
    mPointX = width / 2;

    final float mDisplayX = (mPointX - width / 2f) * 0.5f + width / 2f;
    mPaint.setColor(mColor);

    mPath.rewind();
    // ?
    mPath.moveTo(0, 0);
    mPath.lineTo(0, headerHeight);
    // ???
    mPath.quadTo(mDisplayX, pullHeight, width, headerHeight);
    mPath.lineTo(width, 0);
    mPath.close();
    canvas.drawPath(mPath, mPaint);
    canvas.restoreToCount(saveCount);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        setOutlineProvider(mViewOutlineProvider);
    }
}

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From source file:cn.androidy.androiddevelopmentpatterns.interactivechart.InteractiveLineGraphView.java

/**
 * Draws the overscroll "glow" at the four edges of the chart region, if necessary. The edges
 * of the chart region are stored in {@link #mContentRect}.
 *
 * @see EdgeEffectCompat/*from   w  w w.j  a  va  2  s .co  m*/
 */
private void drawEdgeEffectsUnclipped(Canvas canvas) {
    // The methods below rotate and translate the canvas as needed before drawing the glow,
    // since EdgeEffectCompat always draws a top-glow at 0,0.

    boolean needsInvalidate = false;

    if (!mEdgeEffectTop.isFinished()) {
        final int restoreCount = canvas.save();
        canvas.translate(mContentRect.left, mContentRect.top);
        mEdgeEffectTop.setSize(mContentRect.width(), mContentRect.height());
        if (mEdgeEffectTop.draw(canvas)) {
            needsInvalidate = true;
        }
        canvas.restoreToCount(restoreCount);
    }

    if (!mEdgeEffectBottom.isFinished()) {
        final int restoreCount = canvas.save();
        canvas.translate(2 * mContentRect.left - mContentRect.right, mContentRect.bottom);
        canvas.rotate(180, mContentRect.width(), 0);
        mEdgeEffectBottom.setSize(mContentRect.width(), mContentRect.height());
        if (mEdgeEffectBottom.draw(canvas)) {
            needsInvalidate = true;
        }
        canvas.restoreToCount(restoreCount);
    }

    if (!mEdgeEffectLeft.isFinished()) {
        final int restoreCount = canvas.save();
        canvas.translate(mContentRect.left, mContentRect.bottom);
        canvas.rotate(-90, 0, 0);
        mEdgeEffectLeft.setSize(mContentRect.height(), mContentRect.width());
        if (mEdgeEffectLeft.draw(canvas)) {
            needsInvalidate = true;
        }
        canvas.restoreToCount(restoreCount);
    }

    if (!mEdgeEffectRight.isFinished()) {
        final int restoreCount = canvas.save();
        canvas.translate(mContentRect.right, mContentRect.top);
        canvas.rotate(90, 0, 0);
        mEdgeEffectRight.setSize(mContentRect.height(), mContentRect.width());
        if (mEdgeEffectRight.draw(canvas)) {
            needsInvalidate = true;
        }
        canvas.restoreToCount(restoreCount);
    }

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

---

From source file:de.telekom.pde.codelibrary.ui.layout.PDESwipeRefreshLayout.java

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

    int width = mBounds.width();
    int height = mBounds.height();
    int cx = width / 2;
    int cy = height / 2;

    int restoreCount = canvas.save();
    canvas.clipRect(mBounds);// ww w.j av a 2  s  .c om

    if (mRunning) {
        long now = AnimationUtils.currentAnimationTimeMillis();
        long elapsed = (now - mStartTime) % mAnimationDuration;
        float currentAngle = (elapsed / (mAnimationDuration / 100f)) * 3.6f;

        canvas.drawCircle(cx, cy, PDEBuildingUnits.BU(), mPaint);

        canvas.save();
        canvas.rotate(currentAngle, cx, cy);
        canvas.drawPath(mCirclePath, mWhitePaint);
        canvas.restore();

        ViewCompat.postInvalidateOnAnimation(this);
    } else {
        // Otherwise if we're in the middle of a trigger, draw that.
        if (mTriggerPercentage > 0 && mTriggerPercentage <= 1.0) {
            drawTrigger(canvas, cx, cy);
        }
    }
    canvas.restoreToCount(restoreCount);
}

---

From source file:com.cocosw.accessory.views.layout.CollapsingTitleLayout.java

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

    final int toolbarHeight = mToolbar.getHeight();
    canvas.clipRect(0, 0, canvas.getWidth(), interpolate(canvas.getHeight(), toolbarHeight, mScrollOffset));

    // Now call super and let it draw the background, etc
    super.draw(canvas);

    if (mTitleToDraw != null) {
        float x = mTextLeft;
        float y = mTextTop;

        if (!mUseTexture) {
            // If we're not drawing a texture, we need to properly offset the text
            x -= mDrawnTextBounds.left;/*  w  ww  .  j a va 2  s. com*/
            y -= mDrawnTextBounds.top;
        }

        if (DEBUG_DRAW) {
            // Just a debug tool, which drawn a Magneta rect in the text bounds
            canvas.drawRect(mTextLeft, mTextTop, mTextRight, mTextTop + mDrawnTextBounds.height(),
                    DEBUG_DRAW_PAINT);
        }

        if (mScale != 1f) {
            canvas.scale(mScale, mScale, x, y);
        }

        if (mUseTexture && mExpandedTitleTexture != null) {
            // If we should use a texture, draw it instead of text
            canvas.drawBitmap(mExpandedTitleTexture, x, y, mTexturePaint);
        } else {
            canvas.drawText(mTitleToDraw, x, y, mTextPaint);
        }
    }

    canvas.restoreToCount(saveCount);
}

---

From source file:com.android.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   ww  w  . j  a v  a 2  s .  c o  m*/
        mTmpRect.bottom = Math.min(mTmpRect.bottom, mSlideableView.getTop());
        canvas.clipRect(mTmpRect);
    }

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

    canvas.restoreToCount(save);

    return result;
}

---

From source file:com.h6ah4i.android.materialshadowninepatch.MaterialShadowContainerView.java

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

    if ((getChildCount() > 0) && (getChildAt(0).getVisibility() == View.VISIBLE)) {
        if (mUseAmbientShadow) {
            if (mCurrentAmbientShadowDrawable1 != null) {
                mCurrentAmbientShadowDrawable1.draw(canvas);
            }//from   www .j ava2  s .co m
            if (mCurrentAmbientShadowDrawable2 != null) {
                mCurrentAmbientShadowDrawable2.draw(canvas);
            }
        }

        if (mUseSpotShadow && (mCurrentSpotShadowDrawable1 != null || mCurrentSpotShadowDrawable2 != null)) {
            final int savedCount = canvas.save(Canvas.MATRIX_SAVE_FLAG);

            canvas.translate(mSpotShadowTranslationX, mSpotShadowTranslationY);

            if (mCurrentSpotShadowDrawable1 != null) {
                mCurrentSpotShadowDrawable1.draw(canvas);
            }

            if (mCurrentSpotShadowDrawable2 != null) {
                mCurrentSpotShadowDrawable2.draw(canvas);
            }

            canvas.restoreToCount(savedCount);
        }
    }
}

---

From source file:com.ameron32.apps.tapnotes._trial.ui.CollapsingTitleLayout.java

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

    final int toolbarHeight = mToolbar.getHeight();
    canvas.clipRect(0, 0, canvas.getWidth(), interpolate(canvas.getHeight(), toolbarHeight, mScrollOffset));

    // Now call super and let it draw the background, etc
    super.draw(canvas);

    if (mTitleToDraw != null) {
        float x = mTextLeft;
        float y = mTextTop;

        final float ascent = mTextPaint.ascent() * mScale;
        final float descent = mTextPaint.descent() * mScale;
        final float h = descent - ascent;

        if (DEBUG_DRAW) {
            // Just a debug tool, which drawn a Magneta rect in the text bounds
            canvas.drawRect(mTextLeft, y - h + descent, mTextRight, y + descent, DEBUG_DRAW_PAINT);
        }//from  w  w w.j a  v a 2 s. com

        if (mUseTexture) {
            y = y - h + descent;
        }

        if (mScale != 1f) {
            canvas.scale(mScale, mScale, x, y);
        }

        if (mUseTexture && mExpandedTitleTexture != null) {
            // If we should use a texture, draw it instead of text
            canvas.drawBitmap(mExpandedTitleTexture, x, y, mTexturePaint);
        } else {
            canvas.drawText(mTitleToDraw, x, y, mTextPaint);
        }
    }

    canvas.restoreToCount(saveCount);
}

---

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

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

    // draw the photo
    if (mDrawable != null) {
        int saveCount = canvas.getSaveCount();
        canvas.save();/*from  ww  w  .  j a  va 2s . com*/

        if (mDrawMatrix != null) {
            canvas.concat(mDrawMatrix);
        }
        mDrawable.draw(canvas);

        canvas.restoreToCount(saveCount);

        if (mVideoBlob != null) {
            final Bitmap videoImage = (mVideoReady ? sVideoImage : sVideoNotReadyImage);
            final int drawLeft = (getWidth() - videoImage.getWidth()) / 2;
            final int drawTop = (getHeight() - videoImage.getHeight()) / 2;
            canvas.drawBitmap(videoImage, drawLeft, drawTop, null);
        }

        // Extract the drawable's bounds (in our own copy, to not alter the image)
        mTranslateRect.set(mDrawable.getBounds());
        if (mDrawMatrix != null) {
            mDrawMatrix.mapRect(mTranslateRect);
        }

        if (mAllowCrop) {
            int previousSaveCount = canvas.getSaveCount();
            canvas.drawRect(0, 0, getWidth(), getHeight(), sCropDimPaint);
            canvas.save();
            canvas.clipRect(mCropRect);

            if (mDrawMatrix != null) {
                canvas.concat(mDrawMatrix);
            }

            mDrawable.draw(canvas);
            canvas.restoreToCount(previousSaveCount);
            canvas.drawRect(mCropRect, sCropPaint);
        }
    }
}

---

From source file:martin.app.bitunion.widget.PhotoView.java

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

    // draw the photo
    if (mDrawable != null) {
        int saveCount = canvas.getSaveCount();
        canvas.save();/*from  ww w  .  j a  v a2 s .  c  o  m*/

        if (mDrawMatrix != null) {
            canvas.concat(mDrawMatrix);
        }
        mDrawable.draw(canvas);

        canvas.restoreToCount(saveCount);

        if (mVideoBlob != null) {
            final Bitmap videoImage = (mVideoReady ? sVideoImage : sVideoNotReadyImage);
            final int drawLeft = (getWidth() - videoImage.getWidth()) / 2;
            final int drawTop = (getHeight() - videoImage.getHeight()) / 2;
            canvas.drawBitmap(videoImage, drawLeft, drawTop, null);
        }

        // Extract the drawable's bounds (in our own copy, to not alter the image)
        mTranslateRect.set(mDrawable.getBounds());
        if (mDrawMatrix != null) {
            mDrawMatrix.mapRect(mTranslateRect);
        }

        if (mAllowCrop) {
            int previousSaveCount = canvas.getSaveCount();
            canvas.drawRect(0, 0, getWidth(), getHeight(), sCropDimPaint);
            canvas.save();
            canvas.clipRect(mCropRect);

            if (mDrawMatrix != null) {
                canvas.concat(mDrawMatrix);
            }

            mDrawable.draw(canvas);
            canvas.restoreToCount(previousSaveCount);
            canvas.drawRect(mCropRect, sCropPaint);
        }
    }
}

---

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