java类android.graphics.Paint.FontMetricsInt的实例源码

/**
 * @param position The difference between the distance mCurrentSelected.
 * @param type     The difference from mCurrentSelected 1 means downward drawing, and -1 indicates upward rendering.
 */
private void drawOtherText(Canvas canvas, int position, int type) {
    float d = MARGIN_ALPHA * mMinTextSize * position + type * mMoveLen;
    float scale = parabola(mViewHeight / 4.0f, d);
    float size = (mMaxTextSize - mMinTextSize) * scale + mMinTextSize;
    nPaint.setTextSize(size);
    nPaint.setAlpha((int) ((mMaxTextAlpha - mMinTextAlpha) * scale + mMinTextAlpha));
    float y = (float) (mViewHeight / 2.0 + type * d);
    FontMetricsInt fmi = nPaint.getFontMetricsInt();
    float baseline = (float) (y - (fmi.bottom / 2.0 + fmi.top / 2.0));
    canvas.drawText(mDataList.get(mCurrentSelected + type * position),
            (float) (mViewWidth / 2.0), baseline, nPaint);
}

@Override public int getSize(Paint paint, CharSequence text, int start, int end,
                             FontMetricsInt fm)
{
  if (fm != null && this.fm != null) {
    fm.ascent  = this.fm.ascent;
    fm.descent = this.fm.descent;
    fm.top     = this.fm.top;
    fm.bottom  = this.fm.bottom;
    return size;
  } else {
    return super.getSize(paint, text, start, end, fm);
  }
}

/**
 * @param canvas
 * @param position 距离mCurrentSelected的差值
 * @param type     1表示向下绘制，-1表示向上绘制
 */
private void drawOtherText(Canvas canvas, int position, int type) {
    float d = (float) (MARGIN_ALPHA * mMinTextSize * position + type
            * mMoveLen);
    float scale = parabola(mViewHeight / 4.0f, d);
    float size = (mMaxTextSize - mMinTextSize) * scale + mMinTextSize;
    mPaint.setTextSize(size);
    mPaint.setAlpha((int) ((mMaxTextAlpha - mMinTextAlpha) * scale + mMinTextAlpha));
    float y = (float) (mViewHeight / 2.0 + type * d);
    FontMetricsInt fmi = mPaint.getFontMetricsInt();
    float baseline = (float) (y - (fmi.bottom / 2.0 + fmi.top / 2.0));
    canvas.drawText(mDataList.get(mCurrentSelected + type * position),
            (float) (mViewWidth / 2.0), baseline, mPaint);
}

@Override
public int getSize(Paint paint, CharSequence text, int start, int end,
        FontMetricsInt fm) {
    if (fm != null && this.fm != null) {
        fm.ascent = this.fm.ascent;
        fm.descent = this.fm.descent;
        fm.top = this.fm.top;
        fm.bottom = this.fm.bottom;
        return size;
    } else {
        return super.getSize(paint, text, start, end, fm);
    }
}

@Override
public int getSize(Paint paint, CharSequence text, int start, int end,
        FontMetricsInt fm) {
    if (fm != null && this.fm != null) {
        fm.ascent = this.fm.ascent;
        fm.descent = this.fm.descent;
        fm.top = this.fm.top;
        fm.bottom = this.fm.bottom;
        return size;
    } else {
        return super.getSize(paint, text, start, end, fm);
    }
}

private String getFileAddedWatermark(String path, String text, String voice) {
    if (!new File(path).exists()) {
        return null;
    }
    Options options = new Options();
    options.inJustDecodeBounds = false;
    Bitmap bitmap0 = BitmapFactory.decodeFile(path, options);
    int width = options.outWidth;
    int height = options.outHeight;
    Bitmap bitmapPic = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmapPic);
    canvas.drawBitmap(bitmap0, null, new Rect(0, 0, width, height), null);
    Paint textPaint = new Paint();
    textPaint.setColor(-1);
    textPaint.setTextSize((float) getTextSize());
    textPaint.setFlags(2);
    canvas.drawText(text, 0, text.length(), 30.0f, 50.0f, textPaint);
    Rect rect = new Rect(0, height - getTextBgHeight(), width, height);
    if (!isOrigPicMode) {
        Paint voiceBgPaint = new Paint();
        voiceBgPaint.setColor(getResources().getColor(2131493164));
        voiceBgPaint.setStyle(Style.FILL);
        voiceBgPaint.setFlags(2);
        canvas.drawRect(rect, voiceBgPaint);
        voiceBgPaint.setColor(-1);
        voiceBgPaint.setTextSize((float) getTextSize());
        voiceBgPaint.setTextAlign(Align.CENTER);
        FontMetricsInt fontMetrics = voiceBgPaint.getFontMetricsInt();
        int baseline = (rect.top + ((((rect.bottom - rect.top) - fontMetrics.bottom) + fontMetrics.top) / 2)) - fontMetrics.top;
        canvas.drawText(voice, (float) rect.centerX(), (float) baseline, voiceBgPaint);
    }
    return saveBitmap(bitmapPic);
}

private boolean saveFileAddedVoice(String path, String voice, String savePath) {
    LogInfo.log("fornia", "voice:" + voice);
    if (!new File(path).exists()) {
        return false;
    }
    Options options = new Options();
    options.inJustDecodeBounds = false;
    Bitmap bitmap0 = BitmapFactory.decodeFile(path, options);
    int width = options.outWidth;
    int height = options.outHeight;
    Bitmap bitmapPic = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmapPic);
    canvas.drawBitmap(bitmap0, null, new Rect(0, 0, width, height), null);
    Rect targetBgRect = new Rect(0, height - getTextBgHeight(), width, height);
    if (!isOrigPicMode) {
        Paint voiceBgPaint = new Paint();
        voiceBgPaint.setColor(getResources().getColor(2131493164));
        voiceBgPaint.setStyle(Style.FILL);
        voiceBgPaint.setFlags(2);
        canvas.drawRect(targetBgRect, voiceBgPaint);
        voiceBgPaint.setColor(-1);
        voiceBgPaint.setTextSize((float) getTextSize());
        voiceBgPaint.setTextAlign(Align.CENTER);
        FontMetricsInt fontMetrics = voiceBgPaint.getFontMetricsInt();
        String str = voice;
        canvas.drawText(str, (float) targetBgRect.centerX(), (float) ((targetBgRect.top + ((((targetBgRect.bottom - targetBgRect.top) - fontMetrics.bottom) + fontMetrics.top) / 2)) - fontMetrics.top), voiceBgPaint);
    }
    return FileUtils.saveBitmapByUser(this.mContext, bitmapPic);
}

@Override public int getSize(@NonNull Paint paint, CharSequence text, int start, int end, FontMetricsInt fm) {
    setupFontMetrics(text, start, end, fm, paint);
    if (fm != null) {
        final int padding = dims.getPadding();
        final int margin = dims.getMarginTop();
        fm.ascent = Math.min(fm.top, fm.ascent - padding) - margin;
        fm.descent = Math.max(fm.bottom, padding);
        fm.top = fm.ascent;
        fm.bottom = fm.descent;
    }
    return measureWidth(txtPaint, text, start, end, dims.isRtl());
}

private void setupFontMetrics(CharSequence text, int start, int end, FontMetricsInt fm, Paint p) {
    txtPaint.set(p);
    final CharacterStyle[] otherSpans = ((Spanned) text).getSpans(start, end, CharacterStyle.class);
    for (CharacterStyle otherSpan : otherSpans) {
        otherSpan.updateDrawState(txtPaint);
    }
    txtPaint.setTextSize(p.getTextSize());
    if (fm != null) {
        txtPaint.getFontMetricsInt(fm);
    }
}

/**
 * @param wp
 */
private static void expandMetricsFromPaint(FontMetricsInt fmi, TextPaint wp) {
  final int previousTop = fmi.top;
  final int previousAscent = fmi.ascent;
  final int previousDescent = fmi.descent;
  final int previousBottom = fmi.bottom;
  final int previousLeading = fmi.leading;

  wp.getFontMetricsInt(fmi);

  updateMetrics(fmi, previousTop, previousAscent, previousDescent, previousBottom,
      previousLeading);
}