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.example.view.VerticalViewPager.java

@Override
public void draw(Canvas canvas) {
    // XXX//from  w w  w.  j a v  a2  s  .c  om
    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();

            canvas.rotate(270);
            canvas.translate(-width + getPaddingLeft(), 0);
            mTopEdge.setSize(width, getHeight());
            needsInvalidate |= mTopEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        } /* end of if */
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();
            final int height = getHeight();
            final int itemCount = mAdapter != null ? mAdapter.getCount() : 1;

            canvas.rotate(180);
            canvas.translate(-width + getPaddingLeft(), -itemCount * (height + mPageMargin) + mPageMargin);
            mBottomEdge.setSize(width, height);
            needsInvalidate |= mBottomEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        } /* end of if */
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    } /* end of if */

    if (needsInvalidate) {
        // Keep animating
        invalidate();
    } /* end of if */
}

---

From source file:interactive.view.pagereader.VerticalViewPager.java

@Override
public void draw(Canvas canvas) {
    // XXX ?/*from   w w w . j av a  2  s .  c  o m*/
    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();

            canvas.rotate(270);
            canvas.translate(-width + getPaddingLeft(), 0);
            mTopEdge.setSize(width, getHeight());
            needsInvalidate |= mTopEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        } /* end of if */
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();
            final int height = getHeight();
            final int itemCount = mAdapter != null ? mAdapter.getCount() : 1;

            canvas.rotate(180);
            canvas.translate(-width + getPaddingLeft(), -itemCount * (height + mPageMargin) + mPageMargin);
            mBottomEdge.setSize(width, height);
            needsInvalidate |= mBottomEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        } /* end of if */
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    } /* end of if */

    if (needsInvalidate) {
        // Keep animating
        invalidate();
    } /* end of if */
}

---

From source file:chan.android.app.bitwise.util.StaggeredGridView.java

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

    if (mTopEdge != null) {
        boolean needsInvalidate = false;
        if (!mTopEdge.isFinished()) {
            mTopEdge.draw(canvas);//w  ww  .ja v  a  2  s.  co  m
            needsInvalidate = true;
        }
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            canvas.translate(-width, getHeight());
            canvas.rotate(180, width, 0);
            mBottomEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
            needsInvalidate = true;
        }

        if (needsInvalidate) {
            invalidate();
        }
    }

    //        drawSelector(canvas);
}

---

From source file:com.bitflake.counter.HorizontalPicker.java

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

    int saveCount = canvas.getSaveCount();
    canvas.save();/*from  w  ww. ja v  a 2  s .c o  m*/

    int selectedItem = this.selectedItem;

    float itemWithPadding = itemWidth + dividerSize;

    // translate horizontal to center
    canvas.translate(itemWithPadding * sideItems, 0);

    if (values != null) {
        for (int i = 0; i < values.length; i++) {

            // set text color for item
            textPaint.setColor(getTextColor(i));

            // get text layout
            BoringLayout layout = layouts[i];

            int saveCountHeight = canvas.getSaveCount();
            canvas.save();

            float x = 0;

            float lineWidth = layout.getLineWidth(0);
            if (lineWidth > itemWidth) {
                if (isRtl(values[i])) {
                    x += (lineWidth - itemWidth) / 2;
                } else {
                    x -= (lineWidth - itemWidth) / 2;
                }
            }

            if (marquee != null && i == selectedItem) {
                x += marquee.getScroll();
            }

            // translate vertically to center
            canvas.translate(-x, (canvas.getHeight() - layout.getHeight()) / 2);

            RectF clipBounds;
            if (x == 0) {
                clipBounds = itemClipBounds;
            } else {
                clipBounds = itemClipBoundsOffset;
                clipBounds.set(itemClipBounds);
                clipBounds.offset(x, 0);
            }

            canvas.clipRect(clipBounds);
            layout.draw(canvas);

            if (marquee != null && i == selectedItem && marquee.shouldDrawGhost()) {
                canvas.translate(marquee.getGhostOffset(), 0);
                layout.draw(canvas);
            }

            // restore vertical translation
            canvas.restoreToCount(saveCountHeight);

            // translate horizontal for 1 item
            canvas.translate(itemWithPadding, 0);
        }
    }

    // restore horizontal translation
    canvas.restoreToCount(saveCount);

    drawEdgeEffect(canvas, leftEdgeEffect, 270);
    drawEdgeEffect(canvas, rightEdgeEffect, 90);
}

---

From source file:kr.selfcontrol.selflocklauncher.picker.HorizontalPicker.java

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

    int saveCount = canvas.getSaveCount();
    canvas.save();//from  w w  w .  j a v a 2  s. c  o m

    int selectedItem = mSelectedItem;

    float itemWithPadding = mItemWidth + mDividerSize;

    // translate horizontal to center
    canvas.translate(itemWithPadding * mSideItems, 0);

    if (mValues != null) {
        for (int i = 0; i < mValues.length; i++) {

            // set text color for item
            mTextPaint.setColor(getTextColor(i));

            // get text layout
            BoringLayout layout = mLayouts[i];

            int saveCountHeight = canvas.getSaveCount();
            canvas.save();

            float x = 0;

            float lineWidth = layout.getLineWidth(0);
            if (lineWidth > mItemWidth) {
                if (isRtl(mValues[i])) {
                    x += (lineWidth - mItemWidth) / 2;
                } else {
                    x -= (lineWidth - mItemWidth) / 2;
                }
            }

            if (mMarquee != null && i == selectedItem) {
                x += mMarquee.getScroll();
            }

            // translate vertically to center
            canvas.translate(-x, (canvas.getHeight() - layout.getHeight()) / 2);

            RectF clipBounds;
            if (x == 0) {
                clipBounds = mItemClipBounds;
            } else {
                clipBounds = mItemClipBoundsOffser;
                clipBounds.set(mItemClipBounds);
                clipBounds.offset(x, 0);
            }

            canvas.clipRect(clipBounds);
            layout.draw(canvas);

            if (mMarquee != null && i == selectedItem && mMarquee.shouldDrawGhost()) {
                canvas.translate(mMarquee.getGhostOffset(), 0);
                layout.draw(canvas);
            }

            // restore vertical translation
            canvas.restoreToCount(saveCountHeight);

            // translate horizontal for 1 item
            canvas.translate(itemWithPadding, 0);
        }
    }

    // restore horizontal translation
    canvas.restoreToCount(saveCount);

    drawEdgeEffect(canvas, mLeftEdgeEffect, 270);
    drawEdgeEffect(canvas, mRightEdgeEffect, 90);
}

---

From source file:com.aizou.core.widget.pagerIndicator.indicator.FixedIndicatorView.java

private void drawSlideBar(Canvas canvas) {
    if (mAdapter == null || scrollBar == null) {
        return;/*  ww  w. j  a  v a2s . co  m*/
    }
    final int count = mAdapter.getCount();
    if (count == 0) {
        return;
    }
    if (getCurrentItem() >= count) {
        setCurrentItem(count - 1);
        return;
    }
    float offsetX = 0;
    int offsetY = 0;
    switch (this.scrollBar.getGravity()) {
    case CENTENT_BACKGROUND:
    case CENTENT:
        offsetY = (getHeight() - scrollBar.getHeight(getHeight())) / 2;

        break;
    case TOP:
    case TOP_FLOAT:
        offsetY = 0;
        break;
    case BOTTOM:
    case BOTTOM_FLOAT:
    default:
        offsetY = getHeight() - scrollBar.getHeight(getHeight());
        break;
    }
    View currentView = null;
    if (!inRun.isFinished() && inRun.computeScrollOffset()) {
        offsetX = inRun.getCurrentX();
        int position = 0;
        for (int i = 0; i < count; i++) {
            currentView = getChildAt(i);
            if (currentView.getLeft() <= offsetX && offsetX < currentView.getRight()) {
                position = i;
                break;
            }
        }
        int width = currentView.getWidth();
        int positionOffsetPixels = (int) (offsetX - currentView.getLeft());
        float positionOffset = (offsetX - currentView.getLeft()) / width;
        notifyPageScrolled(position, positionOffset, positionOffsetPixels);
    } else if (mPositionOffset - 0.0f > 0.01) {
        currentView = getChildAt(mPosition);
        int width = currentView.getWidth();
        offsetX = currentView.getLeft() + width * mPositionOffset;
        notifyPageScrolled(mPosition, mPositionOffset, mPositionOffsetPixels);
    } else {
        currentView = getChildAt(mSelectedTabIndex);
        if (currentView == null) {
            return;
        }
        offsetX = currentView.getLeft();
    }
    int tabWidth = currentView.getWidth();
    int width = scrollBar.getWidth(tabWidth);
    width = Math.min(tabWidth, width);
    offsetX += (tabWidth - width) / 2;
    int saveCount = canvas.save();
    canvas.translate(offsetX, offsetY);
    canvas.clipRect(0, 0, width, scrollBar.getHeight(getHeight())); // needed

    int preHeight = scrollBar.getSlideView().getHeight();
    int preWidth = scrollBar.getSlideView().getWidth();
    if (preHeight != scrollBar.getHeight(getHeight()) || preWidth != scrollBar.getWidth(tabWidth)) {
        measureScrollBar(true);
    }

    scrollBar.getSlideView().draw(canvas);
    canvas.restoreToCount(saveCount);
}

---

From source file:com.mixiaoxiao.support.widget.SmoothSwitch.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (!isEnabled()) {//wangbin added this line
        if (mThumbDrawable != null) {
            mThumbDrawable.setColor(getDisableColor(isChecked() ? mThumbColorOn : mThumbColorOff));
        }//w  ww. j ava 2  s .  com
        if (mTrackDrawable != null) {
            mTrackDrawable.setColor(getDisableColor(isChecked() ? mTrackColorOn : mTrackColorOff));
        }
    }
    final Rect padding = mTempRect;
    final Drawable trackDrawable = mTrackDrawable;
    if (trackDrawable != null) {
        trackDrawable.getPadding(padding);
    } else {
        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.ionesmile.variousdemo.view.HorizontalPicker.java

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

    int saveCount = canvas.getSaveCount();
    canvas.save();//from   w  w  w . ja  v a  2s . c  o m

    int selectedItem = this.selectedItem;

    float itemWithPadding = itemWidth + dividerSize;

    // translate horizontal to center
    canvas.translate(itemWithPadding * sideItems, 0);

    if (values != null) {
        for (int i = 0; i < values.length; i++) {

            // set text color for item
            textPaint.setColor(getTextColor(i));
            textPaint.setTextSize(getTextSize(i));
            // get text layout
            BoringLayout layout = layouts[i];

            int saveCountHeight = canvas.getSaveCount();
            canvas.save();

            float x = 0;

            float lineWidth = layout.getLineWidth(0);
            if (lineWidth > itemWidth) {
                if (isRtl(values[i])) {
                    x += (lineWidth - itemWidth) / 2;
                } else {
                    x -= (lineWidth - itemWidth) / 2;
                }
            }

            if (marquee != null && i == selectedItem) {
                x += marquee.getScroll();
            }

            // translate vertically to center
            canvas.translate(-x, (canvas.getHeight() - layout.getHeight()) / 2);

            RectF clipBounds;
            if (x == 0) {
                clipBounds = itemClipBounds;
            } else {
                clipBounds = itemClipBoundsOffset;
                clipBounds.set(itemClipBounds);
                clipBounds.offset(x, 0);
            }

            canvas.clipRect(clipBounds);
            layout.draw(canvas);

            if (marquee != null && i == selectedItem && marquee.shouldDrawGhost()) {
                canvas.translate(marquee.getGhostOffset(), 0);
                layout.draw(canvas);
            }

            // restore vertical translation
            canvas.restoreToCount(saveCountHeight);

            // translate horizontal for 1 item
            canvas.translate(itemWithPadding, 0);
        }
    }

    // restore horizontal translation
    canvas.restoreToCount(saveCount);

    drawEdgeEffect(canvas, leftEdgeEffect, 270);
    drawEdgeEffect(canvas, rightEdgeEffect, 90);
}

---

From source file:cn.zmdx.kaka.locker.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  w w.j  a va2  s  .c  o m
        if (isLayoutRtlSupport()) {
            mTmpRect.left = Math.max(mTmpRect.left, mSlideableView.getRight());
        } else {
            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.mark.quick.ui.view.swipebacklayout.SwipeBackLayout.java

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

    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.ja v a 2s. c  o m*/
        if (isLayoutRtlSupport()) {
            mTmpRect.left = Math.max(mTmpRect.left, mSlideableView.getRight());
        } else {
            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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