Example usage for android.graphics Canvas translate

List of usage examples for android.graphics Canvas translate

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  6. translate

Introduction

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

Prototype

public void translate(float dx, float dy)

Source Link

Document

Preconcat the current matrix with the specified translation

Usage

From source file:com.support.chikeong.centerviewpager.lib.CenterViewPager.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();
            final int width = getWidth();

            canvas.rotate(270);/*from   ww  w  .  j a  v a2s  . co m*/
            canvas.translate(-height + getPaddingTop(),
                    mFirstOffset * width - (getWidth() - getWidth() * mAdapter.getPageWidth(mCurItem)) / 2);
            mLeftEdge.setSize(height, width);

            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();

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width
                    - (getWidth() - getWidth() * mAdapter.getPageWidth(mCurItem)) / 2);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

From source file:com.my.infiniteviewpager.view.InfiniteViewPager.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)) {
        if (!mLeftEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();
            final int width = getWidth();

            canvas.rotate(270);/*from w w w  .  ja va2  s. co  m*/
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            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();

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

From source file:com.suning.boxcontroller.control.ExViewPager.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();
            final int width = getWidth();

            canvas.rotate(ANGLE_ONE);/*ww w  .j a v a  2  s  .  c  o  m*/
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            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();

            canvas.rotate(ANGLE_TWO);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

From source file:eu.kanade.tachiyomi.ui.reader.viewer.pager.vertical.VerticalViewPagerImpl.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 (!mTopEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.translate(getPaddingLeft(), mFirstOffset * height);
            mTopEdge.setSize(width, height);
            needsInvalidate |= mTopEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }/*from w  w  w .  j av  a  2 s .c om*/
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.rotate(180);
            canvas.translate(-width - getPaddingLeft(), -(mLastOffset + 1) * height);
            mBottomEdge.setSize(width, height);
            needsInvalidate |= mBottomEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

From source file:fr.magistry.taigime.CandidateView.java

/**
 * If the canvas is null, then only touch calculations are performed to pick the target
 * candidate.//from ww  w . j a v a  2s. c  o m
 */
@Override
protected void onDraw(Canvas canvas) {
    if (canvas != null) {
        super.onDraw(canvas);
    }
    mTotalWidth = 0;
    if (mSuggestions == null)
        return;

    if (mBgPadding == null) {
        mBgPadding = new Rect(0, 0, 0, 0);
        if (getBackground() != null) {
            getBackground().getPadding(mBgPadding);
        }
    }
    int x = 0;
    final int count = mSuggestions.size();
    final int height = getHeight();
    final Rect bgPadding = mBgPadding;
    final Paint paint = mPaint;
    final int touchX = mTouchX;
    final int scrollX = getScrollX();
    final boolean scrolled = mScrolled;
    final int y; //= (int) ( - mPaint.ascent() + mVerticalPadding);
    final int y2; //= (int) (height - mPaintTRS.descent()); // (y - mVerticalPadding - mPaint.descent() - mPaintTRS.ascent()) ;
    final float initialTRSsize = mPaintTRS.getTextSize();
    if (mOutputTRS) {
        y2 = (int) (-mPaintTRS.ascent() + mVerticalPadding);
        y = (int) (height - mPaint.descent());

    } else {
        y = (int) (-mPaint.ascent() + mVerticalPadding);
        y2 = (int) (height - mPaintTRS.descent());

    }
    for (int i = 0; i < count; i++) {
        Candidate suggestion = mSuggestions.get(i);
        String hanji = suggestion.getWord().getHanji();
        String trs = "";
        switch (ROMANISATION_OUTPUT_MODE) {
        case 0:
            trs = suggestion.getWord().getTailuo();
            break;
        case 1:
            trs = suggestion.getWord().getPOJ();
            break;
        case 2:
            trs = suggestion.getWord().getPOJ_safe();
            break;
        default:
            trs = suggestion.getWord().getTailuo();
        }
        float textWidth;
        if (i == 0) {
            hanji = "";
            trs = "";//hanji;//TODO: conversion?
            //if(mOutputTRS){
            trs = suggestion.getWord().getBopomo();
            if (trs != "")
                textWidth = mPaintBPM.measureText(trs);
            else
                textWidth = 3;
            //}
            //else {
            //   hanji = suggestion.getWord().getBopomo();
            //   textWidth = paint.measureText(hanji);
            //}
        } else
            textWidth = paint.measureText(hanji);
        if (textWidth == 0.0)
            textWidth = paint.measureText(" ");

        final int wordWidth = (int) textWidth + X_GAP * 2;
        mWordX[i] = x;
        mWordWidth[i] = wordWidth;
        mPaintTRS.setTextSize(initialTRSsize);
        mPaintTRS.setTextSize(reduceTextSizeFromWidth(mPaintTRS, trs, textWidth));
        paint.setColor(mColorNormal);
        if (touchX + scrollX >= x && touchX + scrollX < x + wordWidth && !scrolled) {
            if (canvas != null) {
                canvas.translate(x, 0);
                mSelectionHighlight.setBounds(0, bgPadding.top, wordWidth, height);
                mSelectionHighlight.draw(canvas);
                canvas.translate(-x, 0);
            }
            mSelectedIndex = i;
        }

        if (canvas != null) {
            Paint activePaint = null;
            Paint secondPaint = null;
            if (mOutputTRS) {
                activePaint = mPaintTRS;
                secondPaint = paint;
            } else {
                activePaint = paint;
                secondPaint = mPaintTRS;
            }
            if (i == 0) {
                activePaint = mPaintBPM;
            }
            secondPaint.setAlpha(150);
            if ((i == mCursor)) {
                activePaint.setFakeBoldText(true);
                activePaint.setColor(mColorRecommended);
            } else if (i != 0) {
                activePaint.setColor(mColorOther);
            }
            if (i == 0) {
                canvas.drawText(trs, x + X_GAP, y2, mPaintBPM);
            } else {
                canvas.drawText(hanji, x + X_GAP, y, paint);
                canvas.drawText(trs, x + X_GAP, y2, mPaintTRS);
            }
            activePaint.setColor(mColorOther);
            canvas.drawLine(x + wordWidth + 0.5f, bgPadding.top, x + wordWidth + 0.5f, height + 1, paint);
            activePaint.setFakeBoldText(false);
            secondPaint.setAlpha(255);
        }
        x += wordWidth;
        mPaintTRS.setTextSize(initialTRSsize);
    }
    mTotalWidth = x;
    if (mTargetScrollX != getScrollX()) {
        scrollToTarget();
    }
}

From source file:com.dian.diabetes.widget.VerticalViewPager.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);
    boolean needsInvalidate = false;

    //jelle disabled edge effect
    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {

        final int height = getHeight();
        final int width = getWidth() - getPaddingLeft() - getPaddingRight();

        if (!mTopEdge.isFinished()) {
            mTopEdge.setSize(width, height);
            needsInvalidate |= mTopEdge.draw(canvas);
        }//  ww  w. jav  a  2 s  .c om
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            canvas.translate(-width + getPaddingLeft(), getScrollY() + height);
            canvas.rotate(180, width, 0);
            mBottomEdge.setSize(width, height);

            needsInvalidate |= mBottomEdge.draw(canvas);

            canvas.restoreToCount(restoreCount);
        }
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

From source file:com.bloomimpact.bancus.ui.views.VerticalViewPager.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 (!mTopEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();
            final int height = getHeight();

            canvas.rotate(270);// w ww  .  j  a  v a  2 s  . c o m
            canvas.translate(mFirstOffset * height, -width + getPaddingLeft());
            mTopEdge.setSize(width, height);
            needsInvalidate |= mTopEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
        if (!mBottomEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.rotate(90);
            canvas.translate(-(mLastOffset + 1) * height, -getPaddingLeft());
            mBottomEdge.setSize(width, height);
            needsInvalidate |= mBottomEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mTopEdge.finish();
        mBottomEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

From source file:com.tct.mail.browse.ConversationItemView.java

@Override
protected void onDraw(Canvas canvas) {
    // TS: jin.dongjin 2015-06-23 EMAIL BUGFIX_1015610 MOD_S
    if (mCoordinates == null) {
        LogUtils.e(LOG_TAG, "null coordinates in ConversationItemView#onDraw");
        return;// w  w  w .  ja  v  a 2 s  . c  o  m
    }
    // TS: jin.dongjin 2015-06-23 EMAIL BUGFIX_1015610 MOD_E

    Utils.traceBeginSection("CIVC.draw");

    // Contact photo
    if (mGadgetMode == ConversationItemViewCoordinates.GADGET_CONTACT_PHOTO) {
        canvas.save();
        Utils.traceBeginSection("draw senders image");
        drawSendersImage(canvas);
        Utils.traceEndSection();
        canvas.restore();
    }

    //TS: yanhua.chen 2015-9-2 EMAIL CR_ID MOD_S
    // Subject.
    boolean isUnread = mHeader.unread;
    // Old style subject; apply text colors/ sizes/ styling.
    canvas.save();
    if (mHeader.subjectDisplayLayout != null) {
        sPaint.setTextSize(mCoordinates.subjectFontSize);
        sPaint.setTypeface(Typeface.DEFAULT);
        // [FEATURE]-ADD-BEGIN by TSNJ,zhujian.shao,10/23/2014,FR-736411(porting from FR622697)
        canvas.translate(mSubjectWidth - mPriorityX,
                mCoordinates.subjectY + mHeader.subjectDisplayLayout.getTopPadding());
        // [FEATURE]-ADD-END by TSNJ,zhujian.shao,10/23/2014,FR-736411
        mHeader.subjectDisplayLayout.draw(canvas);
    } else {
        drawSubject(canvas);
    }
    canvas.restore();

    // Sender.
    sPaint.setTypeface(Typeface.DEFAULT);
    canvas.save();
    drawSenders(canvas);
    canvas.restore();
    //TS: yanhua.chen 2015-9-2 EMAIL CR_ID MOD_E

    canvas.save();
    drawSnippet(canvas);
    canvas.restore();

    // Folders.
    if (mConfig.areFoldersVisible()) {
        mHeader.folderDisplayer.drawFolders(canvas, mCoordinates, ViewUtils.isViewRtl(this));
    }

    // If this folder has a color (combined view/Email), show it here
    if (mConfig.isColorBlockVisible()) {
        sFoldersPaint.setColor(mHeader.conversation.color);
        sFoldersPaint.setStyle(Paint.Style.FILL);
        canvas.drawRect(mCoordinates.colorBlockX, mCoordinates.colorBlockY,
                mCoordinates.colorBlockX + mCoordinates.colorBlockWidth,
                mCoordinates.colorBlockY + mCoordinates.colorBlockHeight, sFoldersPaint);
    }

    // Draw the reply state. Draw nothing if neither replied nor forwarded.
    if (mConfig.isReplyStateVisible()) {
        if (mHeader.hasBeenRepliedTo && mHeader.hasBeenForwarded) {
            canvas.drawBitmap(STATE_REPLIED_AND_FORWARDED, mCoordinates.replyStateX, mCoordinates.replyStateY,
                    null);
        } else if (mHeader.hasBeenRepliedTo) {
            canvas.drawBitmap(STATE_REPLIED, mCoordinates.replyStateX, mCoordinates.replyStateY, null);
        } else if (mHeader.hasBeenForwarded) {
            canvas.drawBitmap(STATE_FORWARDED, mCoordinates.replyStateX, mCoordinates.replyStateY, null);
        } else if (mHeader.isInvite) {
            canvas.drawBitmap(STATE_CALENDAR_INVITE, mCoordinates.replyStateX, mCoordinates.replyStateY, null);
        }
    }

    if (mConfig.isPersonalIndicatorVisible()) {
        canvas.drawBitmap(mHeader.personalLevelBitmap, mCoordinates.personalIndicatorX,
                mCoordinates.personalIndicatorY, null);
    }

    // Info icon
    if (mHeader.infoIcon != null) {
        canvas.drawBitmap(mHeader.infoIcon, mInfoIconX, mCoordinates.infoIconY, sPaint);
    }

    // Date.
    sPaint.setTextSize(mCoordinates.dateFontSize);
    sPaint.setTypeface(isUnread ? Typeface.SANS_SERIF : SANS_SERIF_LIGHT);
    sPaint.setColor(isUnread ? sDateTextColorUnread : sDateTextColorRead);
    drawText(canvas, mHeader.dateText, mDateX, mCoordinates.dateYBaseline, sPaint);
    //TS: yanhua.chen 2015-6-19 EMAIL BUGFIX_305581 MOD_S
    //TS: wenggangjin 2015-01-27 EMAIL BUGFIX_-888881 MOD_S
    //TS: wenggangjin 2015-01-15 EMAIL BUGFIX_886241 MOD_S
    //        if (mHeader.conversation.hasAttachments && !mDisplayedFolder.isSearch()) {
    if (mHeader.conversation.hasAttachments) {
        mHeader.paperclip = ATTACHMENT;
    } else {
        mHeader.paperclip = null;
    }
    //TS: wenggangjin 2015-01-15 EMAIL BUGFIX_886241 MOD_E
    //TS: wenggangjin 2015-01-27 EMAIL BUGFIX_-888881 MOD_S
    //TS: yanhua.chen 2015-6-19 EMAIL BUGFIX_305581 MOD_E
    // Paper clip icon.
    if (mHeader.paperclip != null) {
        canvas.drawBitmap(mHeader.paperclip, mPaperclipX, mCoordinates.paperclipY, sPaint);
    }

    //[FEATURE]-Add-BEGIN by TSCD.chao zhang,04/17/2014,FR 631895(porting from FR514398)
    //priority icon
    Bitmap sPrio = sNormalPriorityIcon;
    mPriority = mHeader.conversation.flagPriority;
    if (mPriority == HIGH_PRIORITY) {
        sPrio = sHighPriorityIcon;
    } else if (mPriority == LOW_PRIORITY) {
        sPrio = sLowPriorityIcon;
    }
    // TS: zhaotianyong 2014-12-15 EMAIL BUGFIX_859814 ADD_S
    sPrio = resizeBitMap(sPrio, 0.6f, 0.6f);
    // TS: zhaotianyong 2014-12-15 EMAIL BUGFIX_859814 ADD_E
    canvas.drawBitmap(sPrio, mPriorityX, mCoordinates.paperclipY, null);

    //[FEATURE]-Add-END by TSCD.chao zhang

    if (mStarEnabled) {
        // Star.
        canvas.drawBitmap(getStarBitmap(), mCoordinates.starX, mCoordinates.starY, sPaint);
    }

    // right-side edge effect when in tablet conversation mode and the list is not collapsed
    if (Utils.getDisplayListRightEdgeEffect(mTabletDevice, mListCollapsible, mConfig.getViewMode())) {
        final boolean isRtl = ViewUtils.isViewRtl(this);
        RIGHT_EDGE_TABLET.setBounds((isRtl) ? 0 : getWidth() - RIGHT_EDGE_TABLET.getIntrinsicWidth(), 0,
                (isRtl) ? RIGHT_EDGE_TABLET.getIntrinsicWidth() : getWidth(), getHeight());
        RIGHT_EDGE_TABLET.draw(canvas);

        if (isActivated()) {
            final int w = VISIBLE_CONVERSATION_HIGHLIGHT.getIntrinsicWidth();
            VISIBLE_CONVERSATION_HIGHLIGHT.setBounds((isRtl) ? getWidth() - w : 0, 0, (isRtl) ? getWidth() : w,
                    getHeight());
            VISIBLE_CONVERSATION_HIGHLIGHT.draw(canvas);
        }
    }
    //TS: zheng.zou 2015-09-01 EMAIL BUGFIX_539892 MOD_S
    if (mWillDrawDivider) {
        // draw the inset divider
        sDividerPaint.setColor(sDividerColor);
        final int dividerBottomY = getHeight();
        final int dividerTopY = dividerBottomY - sDividerHeight;
        // AM: Kexue.Geng 2015-02-28 EMAIL BUGFIX_900927 MOD_S
        // canvas.drawRect(sDividerInset, dividerTopY, getWidth(), dividerBottomY, sDividerPaint);
        canvas.drawRect(mGadgetMode == ConversationItemViewCoordinates.GADGET_NONE ? 0 : sDividerInset,
                dividerTopY, getWidth(), dividerBottomY, sDividerPaint);
        // AM: Kexue.Geng 2015-02-28 EMAIL BUGFIX_900927 MOD_E
    }
    //TS: zheng.zou 2015-09-01 EMAIL BUGFIX_539892 MOD_E
    Utils.traceEndSection();
    // TS: chao.zhang 2015-09-14 EMAIL FEATURE-585337 ADD_S
    //draw the status
    canvas.save();
    drawStatus(canvas);
    canvas.restore();
    // TS: chao.zhang 2015-09-14 EMAIL FEATURE-585337 ADD_E
}

From source file:com.ifnoif.androidtestdemo.customview.VViewPager.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();
            final int width = getWidth() - getPaddingLeft() - getPaddingRight();

            canvas.rotate(270);/*from   ww  w  .  j  ava 2s  .co m*/
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            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();

            canvas.rotate(180);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

From source file:au.com.glassechidna.velocityviewpager.VelocityViewPager.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();
            final int width = getWidth();

            canvas.rotate(270);/*ww  w . ja v  a 2  s . c o m*/
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            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();

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}