Examples with ReplacementSpan android.text.style.ReplacementSpan used on opensource projects

Example 36 with ReplacementSpan

use of android.text.style.ReplacementSpan in project android_frameworks_base by DirtyUnicorns.

the class BaseKeyListener method adjustReplacementSpan.

// Returns the offset of the replacement span edge if the offset is inside of the replacement
// span.  Otherwise, does nothing and returns the input offset value.
private static int adjustReplacementSpan(CharSequence text, int offset, boolean moveToStart) {
    if (!(text instanceof Spanned)) {
        return offset;
    }
    ReplacementSpan[] spans = ((Spanned) text).getSpans(offset, offset, ReplacementSpan.class);
    for (int i = 0; i < spans.length; i++) {
        final int start = ((Spanned) text).getSpanStart(spans[i]);
        final int end = ((Spanned) text).getSpanEnd(spans[i]);
        if (start < offset && end > offset) {
            offset = moveToStart ? start : end;
        }
    }
    return offset;
}

Example 37 with ReplacementSpan

use of android.text.style.ReplacementSpan in project android_frameworks_base by ResurrectionRemix.

the class Layout method getOffsetAtStartOf.

private int getOffsetAtStartOf(int offset) {
    // zero-width characters, look at callers
    if (offset == 0)
        return 0;
    CharSequence text = mText;
    char c = text.charAt(offset);
    if (c >= '�' && c <= '�') {
        char c1 = text.charAt(offset - 1);
        if (c1 >= '�' && c1 <= '�')
            offset -= 1;
    }
    if (mSpannedText) {
        ReplacementSpan[] spans = ((Spanned) text).getSpans(offset, offset, ReplacementSpan.class);
        for (int i = 0; i < spans.length; i++) {
            int start = ((Spanned) text).getSpanStart(spans[i]);
            int end = ((Spanned) text).getSpanEnd(spans[i]);
            if (start < offset && end > offset)
                offset = start;
        }
    }
    return offset;
}

Example 38 with ReplacementSpan

use of android.text.style.ReplacementSpan in project android_frameworks_base by ResurrectionRemix.

the class MeasuredText method setPara.

/**
     * Analyzes text for bidirectional runs.  Allocates working buffers.
     */
void setPara(CharSequence text, int start, int end, TextDirectionHeuristic textDir, StaticLayout.Builder builder) {
    mBuilder = builder;
    mText = text;
    mTextStart = start;
    int len = end - start;
    mLen = len;
    mPos = 0;
    if (mWidths == null || mWidths.length < len) {
        mWidths = ArrayUtils.newUnpaddedFloatArray(len);
    }
    if (mChars == null || mChars.length < len) {
        mChars = ArrayUtils.newUnpaddedCharArray(len);
    }
    TextUtils.getChars(text, start, end, mChars, 0);
    if (text instanceof Spanned) {
        Spanned spanned = (Spanned) text;
        ReplacementSpan[] spans = spanned.getSpans(start, end, ReplacementSpan.class);
        for (int i = 0; i < spans.length; i++) {
            int startInPara = spanned.getSpanStart(spans[i]) - start;
            int endInPara = spanned.getSpanEnd(spans[i]) - start;
            // The span interval may be larger and must be restricted to [start, end[
            if (startInPara < 0)
                startInPara = 0;
            if (endInPara > len)
                endInPara = len;
            for (int j = startInPara; j < endInPara; j++) {
                // object replacement character
                mChars[j] = '';
            }
        }
    }
    if ((textDir == TextDirectionHeuristics.LTR || textDir == TextDirectionHeuristics.FIRSTSTRONG_LTR || textDir == TextDirectionHeuristics.ANYRTL_LTR) && TextUtils.doesNotNeedBidi(mChars, 0, len)) {
        mDir = Layout.DIR_LEFT_TO_RIGHT;
        mEasy = true;
    } else {
        if (mLevels == null || mLevels.length < len) {
            mLevels = ArrayUtils.newUnpaddedByteArray(len);
        }
        int bidiRequest;
        if (textDir == TextDirectionHeuristics.LTR) {
            bidiRequest = Layout.DIR_REQUEST_LTR;
        } else if (textDir == TextDirectionHeuristics.RTL) {
            bidiRequest = Layout.DIR_REQUEST_RTL;
        } else if (textDir == TextDirectionHeuristics.FIRSTSTRONG_LTR) {
            bidiRequest = Layout.DIR_REQUEST_DEFAULT_LTR;
        } else if (textDir == TextDirectionHeuristics.FIRSTSTRONG_RTL) {
            bidiRequest = Layout.DIR_REQUEST_DEFAULT_RTL;
        } else {
            boolean isRtl = textDir.isRtl(mChars, 0, len);
            bidiRequest = isRtl ? Layout.DIR_REQUEST_RTL : Layout.DIR_REQUEST_LTR;
        }
        mDir = AndroidBidi.bidi(bidiRequest, mChars, mLevels, len, false);
        mEasy = false;
    }
}

Example 39 with ReplacementSpan

use of android.text.style.ReplacementSpan in project android_frameworks_base by ResurrectionRemix.

the class MeasuredText method addStyleRun.

float addStyleRun(TextPaint paint, MetricAffectingSpan[] spans, int len, Paint.FontMetricsInt fm) {
    TextPaint workPaint = mWorkPaint;
    workPaint.set(paint);
    // XXX paint should not have a baseline shift, but...
    workPaint.baselineShift = 0;
    ReplacementSpan replacement = null;
    for (int i = 0; i < spans.length; i++) {
        MetricAffectingSpan span = spans[i];
        if (span instanceof ReplacementSpan) {
            replacement = (ReplacementSpan) span;
        } else {
            span.updateMeasureState(workPaint);
        }
    }
    float wid;
    if (replacement == null) {
        wid = addStyleRun(workPaint, len, fm);
    } else {
        // Use original text.  Shouldn't matter.
        wid = replacement.getSize(workPaint, mText, mTextStart + mPos, mTextStart + mPos + len, fm);
        if (mBuilder == null) {
            float[] w = mWidths;
            w[mPos] = wid;
            for (int i = mPos + 1, e = mPos + len; i < e; i++) w[i] = 0;
        } else {
            mBuilder.addReplacementRun(mPos, mPos + len, wid);
        }
        mPos += len;
    }
    if (fm != null) {
        if (workPaint.baselineShift < 0) {
            fm.ascent += workPaint.baselineShift;
            fm.top += workPaint.baselineShift;
        } else {
            fm.descent += workPaint.baselineShift;
            fm.bottom += workPaint.baselineShift;
        }
    }
    return wid;
}

Example 40 with ReplacementSpan

use of android.text.style.ReplacementSpan in project android_frameworks_base by ResurrectionRemix.

the class TextLine method handleRun.

/**
     * Utility function for handling a unidirectional run.  The run must not
     * contain tabs but can contain styles.
     *
     *
     * @param start the line-relative start of the run
     * @param measureLimit the offset to measure to, between start and limit inclusive
     * @param limit the limit of the run
     * @param runIsRtl true if the run is right-to-left
     * @param c the canvas, can be null
     * @param x the end of the run closest to the leading margin
     * @param top the top of the line
     * @param y the baseline
     * @param bottom the bottom of the line
     * @param fmi receives metrics information, can be null
     * @param needWidth true if the width is required
     * @return the signed width of the run based on the run direction; only
     * valid if needWidth is true
     */
private float handleRun(int start, int measureLimit, int limit, boolean runIsRtl, Canvas c, float x, int top, int y, int bottom, FontMetricsInt fmi, boolean needWidth) {
    // Case of an empty line, make sure we update fmi according to mPaint
    if (start == measureLimit) {
        TextPaint wp = mWorkPaint;
        wp.set(mPaint);
        if (fmi != null) {
            expandMetricsFromPaint(fmi, wp);
        }
        return 0f;
    }
    if (mSpanned == null) {
        TextPaint wp = mWorkPaint;
        wp.set(mPaint);
        final int mlimit = measureLimit;
        return handleText(wp, start, limit, start, limit, runIsRtl, c, x, top, y, bottom, fmi, needWidth || mlimit < measureLimit, mlimit);
    }
    mMetricAffectingSpanSpanSet.init(mSpanned, mStart + start, mStart + limit);
    mCharacterStyleSpanSet.init(mSpanned, mStart + start, mStart + limit);
    // Shaping needs to take into account context up to metric boundaries,
    // but rendering needs to take into account character style boundaries.
    // So we iterate through metric runs to get metric bounds,
    // then within each metric run iterate through character style runs
    // for the run bounds.
    final float originalX = x;
    for (int i = start, inext; i < measureLimit; i = inext) {
        TextPaint wp = mWorkPaint;
        wp.set(mPaint);
        inext = mMetricAffectingSpanSpanSet.getNextTransition(mStart + i, mStart + limit) - mStart;
        int mlimit = Math.min(inext, measureLimit);
        ReplacementSpan replacement = null;
        for (int j = 0; j < mMetricAffectingSpanSpanSet.numberOfSpans; j++) {
            // empty by construction. This special case in getSpans() explains the >= & <= tests
            if ((mMetricAffectingSpanSpanSet.spanStarts[j] >= mStart + mlimit) || (mMetricAffectingSpanSpanSet.spanEnds[j] <= mStart + i))
                continue;
            MetricAffectingSpan span = mMetricAffectingSpanSpanSet.spans[j];
            if (span instanceof ReplacementSpan) {
                replacement = (ReplacementSpan) span;
            } else {
                // We might have a replacement that uses the draw
                // state, otherwise measure state would suffice.
                span.updateDrawState(wp);
            }
        }
        if (replacement != null) {
            x += handleReplacement(replacement, wp, i, mlimit, runIsRtl, c, x, top, y, bottom, fmi, needWidth || mlimit < measureLimit);
            continue;
        }
        for (int j = i, jnext; j < mlimit; j = jnext) {
            jnext = mCharacterStyleSpanSet.getNextTransition(mStart + j, mStart + inext) - mStart;
            int offset = Math.min(jnext, mlimit);
            wp.set(mPaint);
            for (int k = 0; k < mCharacterStyleSpanSet.numberOfSpans; k++) {
                // Intentionally using >= and <= as explained above
                if ((mCharacterStyleSpanSet.spanStarts[k] >= mStart + offset) || (mCharacterStyleSpanSet.spanEnds[k] <= mStart + j))
                    continue;
                CharacterStyle span = mCharacterStyleSpanSet.spans[k];
                span.updateDrawState(wp);
            }
            // Only draw hyphen on last run in line
            if (jnext < mLen) {
                wp.setHyphenEdit(0);
            }
            x += handleText(wp, j, jnext, i, inext, runIsRtl, c, x, top, y, bottom, fmi, needWidth || jnext < measureLimit, offset);
        }
    }
    return x - originalX;
}