Example usage for android.text TextPaint getTextWidths

Introduction

In this page you can find the example usage for android.text TextPaint getTextWidths.

Prototype

public int getTextWidths(String text, float[] widths) 

Source Link

Document

Return the advance widths for the characters in the string.

Usage

From source file:com.android.ex.chips.RecipientEditTextView.java

private Bitmap createSelectedChip(final RecipientEntry contact, final TextPaint paint) {
    // Ellipsize the text so that it takes AT MOST the entire width of the
    // autocomplete text entry area. Make sure to leave space for padding
    // on the sides.
    final int height = (int) mChipHeight;
    final int deleteWidth = height;
    final float[] widths = new float[1];
    paint.getTextWidths(" ", widths);
    final String createChipDisplayText = createChipDisplayText(contact);
    final float calculateAvailableWidth = calculateAvailableWidth();
    final CharSequence ellipsizedText = ellipsizeText(createChipDisplayText, paint,
            calculateAvailableWidth - deleteWidth - widths[0]);
    // Make sure there is a minimum chip width so the user can ALWAYS
    // tap a chip without difficulty.
    final int width = Math.max(deleteWidth * 2,
            (int) Math.floor(paint.measureText(ellipsizedText, 0, ellipsizedText.length())) + mChipPadding * 2
                    + deleteWidth);/*ww  w.  j  av a  2 s . c  o m*/
    // Create the background of the chip.
    final Bitmap tmpBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(tmpBitmap);
    if (mChipBackgroundPressed != null) {
        mChipBackgroundPressed.setBounds(0, 0, width, height);
        mChipBackgroundPressed.draw(canvas);
        paint.setColor(sSelectedTextColor);
        // Vertically center the text in the chip.
        canvas.drawText(ellipsizedText, 0, ellipsizedText.length(), mChipPadding,
                getTextYOffset((String) ellipsizedText, paint, height), paint);
        // Make the delete a square.
        final Rect backgroundPadding = new Rect();
        mChipBackgroundPressed.getPadding(backgroundPadding);
        mChipDelete.setBounds(width - deleteWidth + backgroundPadding.left, 0 + backgroundPadding.top,
                width - backgroundPadding.right, height - backgroundPadding.bottom);
        mChipDelete.draw(canvas);
    } else
        Log.w(TAG, "Unable to draw a background for the chips as it was never set");
    return tmpBitmap;
}

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From source file:com.android.ex.chips.RecipientEditTextView.java

private Bitmap createUnselectedChip(final RecipientEntry contact, final TextPaint paint,
        final boolean leaveBlankIconSpacer) {
    // Ellipsize the text so that it takes AT MOST the entire width of the
    // autocomplete text entry area. Make sure to leave space for padding
    // on the sides.
    final int height = (int) mChipHeight;
    int iconWidth = height;
    final float[] widths = new float[1];
    paint.getTextWidths(" ", widths);
    final float availableWidth = calculateAvailableWidth();
    final String chipDisplayText = createChipDisplayText(contact);
    final CharSequence ellipsizedText = ellipsizeText(chipDisplayText, paint,
            availableWidth - iconWidth - widths[0]);
    // Make sure there is a minimum chip width so the user can ALWAYS
    // tap a chip without difficulty.
    final int width = Math.max(iconWidth * 2,
            (int) Math.floor(paint.measureText(ellipsizedText, 0, ellipsizedText.length())) + mChipPadding * 2
                    + iconWidth);//w  w w  . j  av  a2 s  . com
    // Create the background of the chip.
    final Bitmap tmpBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(tmpBitmap);
    final Drawable background = getChipBackground(contact);
    if (background != null) {
        background.setBounds(0, 0, width, height);
        background.draw(canvas);
        // Don't draw photos for recipients that have been typed in OR generated on the fly.
        final long contactId = contact.getContactId();
        final boolean drawPhotos = isPhoneQuery() ? contactId != RecipientEntry.INVALID_CONTACT
                : contactId != RecipientEntry.INVALID_CONTACT && contactId != RecipientEntry.GENERATED_CONTACT
                        && !TextUtils.isEmpty(contact.getDisplayName());
        if (drawPhotos) {
            byte[] photoBytes = contact.getPhotoBytes();
            // There may not be a photo yet if anything but the first contact address
            // was selected.
            if (photoBytes == null && contact.getPhotoThumbnailUri() != null) {
                // TODO: cache this in the recipient entry?
                getAdapter().fetchPhoto(contact, contact.getPhotoThumbnailUri());
                photoBytes = contact.getPhotoBytes();
            }
            Bitmap photo;
            if (photoBytes != null)
                photo = BitmapFactory.decodeByteArray(photoBytes, 0, photoBytes.length);
            else // TODO: can the scaled down default photo be cached?
                photo = mDefaultContactPhoto;
            // Draw the photo on the left side.
            if (photo != null) {
                final RectF src = new RectF(0, 0, photo.getWidth(), photo.getHeight());
                final Rect backgroundPadding = new Rect();
                mChipBackground.getPadding(backgroundPadding);
                final RectF dst = new RectF(width - iconWidth + backgroundPadding.left,
                        0 + backgroundPadding.top, width - backgroundPadding.right,
                        height - backgroundPadding.bottom);
                final Matrix matrix = new Matrix();
                matrix.setRectToRect(src, dst, Matrix.ScaleToFit.FILL);
                canvas.drawBitmap(photo, matrix, paint);
            }
        } else if (!leaveBlankIconSpacer || isPhoneQuery())
            iconWidth = 0;
        paint.setColor(ContextCompat.getColor(getContext(), android.R.color.black));
        // Vertically center the text in the chip.
        canvas.drawText(ellipsizedText, 0, ellipsizedText.length(), mChipPadding,
                getTextYOffset((String) ellipsizedText, paint, height), paint);
    } else
        Log.w(TAG, "Unable to draw a background for the chips as it was never set");
    return tmpBitmap;
}

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