Example usage for android.text StaticLayout getLineEnd

Introduction

In this page you can find the example usage for android.text StaticLayout getLineEnd.

Prototype

public final int getLineEnd(int line) 

Source Link

Document

Return the text offset after the last character on the specified line.

Usage

From source file:android.support.v7.widget.AppCompatTextViewAutoSizeHelper.java

private boolean suggestedSizeFitsInSpace(int suggestedSizeInPx, RectF availableSpace) {
    CharSequence text = mTextView.getText();
    TransformationMethod transformationMethod = mTextView.getTransformationMethod();
    if (transformationMethod != null) {
        CharSequence transformedText = transformationMethod.getTransformation(text, mTextView);
        if (transformedText != null) {
            text = transformedText;/* ww  w  .  j  a  va2s  .c  o m*/
        }
    }

    final int maxLines = Build.VERSION.SDK_INT >= 16 ? mTextView.getMaxLines() : -1;
    if (mTempTextPaint == null) {
        mTempTextPaint = new TextPaint();
    } else {
        mTempTextPaint.reset();
    }
    mTempTextPaint.set(mTextView.getPaint());
    mTempTextPaint.setTextSize(suggestedSizeInPx);

    // Needs reflection call due to being private.
    Layout.Alignment alignment = invokeAndReturnWithDefault(mTextView, "getLayoutAlignment",
            Layout.Alignment.ALIGN_NORMAL);
    final StaticLayout layout = Build.VERSION.SDK_INT >= 23
            ? createStaticLayoutForMeasuring(text, alignment, Math.round(availableSpace.right), maxLines)
            : createStaticLayoutForMeasuringPre23(text, alignment, Math.round(availableSpace.right));
    // Lines overflow.
    if (maxLines != -1 && (layout.getLineCount() > maxLines
            || (layout.getLineEnd(layout.getLineCount() - 1)) != text.length())) {
        return false;
    }

    // Height overflow.
    if (layout.getHeight() > availableSpace.bottom) {
        return false;
    }

    return true;
}

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From source file:net.opacapp.multilinecollapsingtoolbar.CollapsingTextHelper.java

private void calculateUsingTextSize(final float textSize) {
    if (mText == null)
        return;/*from w ww  .  java  2s .  com*/
    final float availableWidth;
    final float newTextSize;
    boolean updateDrawText = false;
    // BEGIN MODIFICATION: Add maxLines variable
    int maxLines;
    // END MODIFICATION
    if (isClose(textSize, mCollapsedTextSize)) {
        availableWidth = mCollapsedBounds.width();
        newTextSize = mCollapsedTextSize;
        mScale = 1f;
        if (mCurrentTypeface != mCollapsedTypeface) {
            mCurrentTypeface = mCollapsedTypeface;
            updateDrawText = true;
        }
        // BEGIN MODIFICATION: Set maxLines variable
        maxLines = 1;
        // END MODIFICATION
    } else {
        availableWidth = mExpandedBounds.width();
        newTextSize = mExpandedTextSize;
        if (mCurrentTypeface != mExpandedTypeface) {
            mCurrentTypeface = mExpandedTypeface;
            updateDrawText = true;
        }
        if (isClose(textSize, mExpandedTextSize)) {
            // If we're close to the expanded text size, snap to it and use a scale of 1
            mScale = 1f;
        } else {
            // Else, we'll scale down from the expanded text size
            mScale = textSize / mExpandedTextSize;
        }
        // BEGIN MODIFICATION: Set maxLines variable
        maxLines = this.maxLines;
        // END MODIFICATION
    }
    if (availableWidth > 0) {
        updateDrawText = (mCurrentTextSize != newTextSize) || mBoundsChanged || updateDrawText;
        mCurrentTextSize = newTextSize;
        mBoundsChanged = false;
    }
    if (mTextToDraw == null || updateDrawText) {
        mTextPaint.setTextSize(mCurrentTextSize);
        mTextPaint.setTypeface(mCurrentTypeface);

        // BEGIN MODIFICATION: Text layout creation and text truncation
        StaticLayout layout = new StaticLayout(mText, mTextPaint, (int) availableWidth,
                Layout.Alignment.ALIGN_NORMAL, 1, 0, false);
        CharSequence truncatedText;
        if (layout.getLineCount() > maxLines) {
            int lastLine = maxLines - 1;
            CharSequence textBefore = lastLine > 0 ? mText.subSequence(0, layout.getLineEnd(lastLine - 1)) : "";
            CharSequence lineText = mText.subSequence(layout.getLineStart(lastLine),
                    layout.getLineEnd(lastLine));
            // if last char in line is space, move it behind the ellipsis
            CharSequence lineEnd = "";
            if (lineText.charAt(lineText.length() - 1) == ' ') {
                lineEnd = lineText.subSequence(lineText.length() - 1, lineText.length());
                lineText = lineText.subSequence(0, lineText.length() - 1);
            }
            // insert ellipsis character
            lineText = TextUtils.concat(lineText, "\u2026", lineEnd);
            // if the text is too long, truncate it
            CharSequence truncatedLineText = TextUtils.ellipsize(lineText, mTextPaint, availableWidth,
                    TextUtils.TruncateAt.END);
            truncatedText = TextUtils.concat(textBefore, truncatedLineText);

        } else {
            truncatedText = mText;
        }
        if (!TextUtils.equals(truncatedText, mTextToDraw)) {
            mTextToDraw = truncatedText;
            mIsRtl = calculateIsRtl(mTextToDraw);
        }

        final Layout.Alignment alignment;

        // Don't rectify gravity for RTL languages, Layout.Alignment does it already.
        switch (mExpandedTextGravity & GravityCompat.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
        case Gravity.CENTER_HORIZONTAL:
            alignment = Layout.Alignment.ALIGN_CENTER;
            break;
        case Gravity.RIGHT:
        case Gravity.END:
            alignment = Layout.Alignment.ALIGN_OPPOSITE;
            break;
        case Gravity.LEFT:
        case Gravity.START:
        default:
            alignment = Layout.Alignment.ALIGN_NORMAL;
            break;
        }

        mTextLayout = new StaticLayout(mTextToDraw, mTextPaint, (int) availableWidth, alignment, 1, 0, false);
        // END MODIFICATION
    }
}

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