List of usage examples for android.text TextPaint measureText
public float measureText(char[] text, int index, int count)
From source file:cn.dreamtobe.emoji.ellipsize.helper.SpanEllipsizeEndHelper.java
@TargetApi(Build.VERSION_CODES.JELLY_BEAN) public static CharSequence matchMaxWidth(SpannableString targetText, TextView textView) { if (targetText.length() <= 0) { return targetText; }// w w w .j a v a 2s . com if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) { return targetText; } if (textView == null) { return targetText; } final int maxWidth = textView.getMaxWidth(); if (maxWidth <= 0 || maxWidth >= Integer.MAX_VALUE) { return targetText; } if (textView.getEllipsize() != TextUtils.TruncateAt.END) { return targetText; } //TODO Multi-lines support if (textView.getMaxLines() != 1) { return targetText; } final String maxWidthKey = getMaxWidthKey(targetText, textView); SpannableString tmpText = SPAN_MAXWIDTH_CACHE.get(maxWidthKey); if (tmpText != null) { removeClickableSpan(tmpText); return tmpText; } TextPaint textPaint = textView.getPaint(); if (textPaint == null) { return targetText; } final int totalWidth = (int) textPaint.measureText(targetText, 0, targetText.length()); if (totalWidth <= maxWidth) { return targetText; } final long startTime = System.currentTimeMillis(); // deal maxwitdh final int dotWidth = (int) textPaint.measureText("..."); tmpText = targetText; int start = 0; int end = targetText.length(); // targetX is maxWidth - "...".length int targetX = maxWidth - dotWidth; //dichotomy: get x most touch targetX int middle = targetText.length(); int x = 0; while (start <= end) { // tx = targetX, tl = targetLength // width: 0 x // length: 0 middle end // -------------|------------- middle = (start + end) / 2; int emojiDraW = 0; int emojiStrW = 0; int emojiExcursion = 1; final Object[] tmpSpans = tmpText.getSpans(0, middle, Object.class); if (tmpSpans != null) { for (Object tmpSpan : tmpSpans) { final int tmpStart = tmpText.getSpanStart(tmpSpan); final int tmpEnd = tmpText.getSpanEnd(tmpSpan); //middle in (tmpStart, tmpEnd) if (tmpStart < middle && tmpEnd > middle) { middle = tmpEnd; emojiExcursion = tmpEnd - tmpStart; } } // TextPaint#measure do not attention span, so adjust by ourselves for (Object tmpSpan : tmpSpans) { final int tmpStart = tmpText.getSpanStart(tmpSpan); final int tmpEnd = tmpText.getSpanEnd(tmpSpan); // TODO support other span if (tmpStart < middle && tmpSpan instanceof ImageSpan) { emojiDraW += ((ImageSpan) tmpSpan).getDrawable().getBounds().width(); emojiStrW += textPaint.measureText(tmpText, tmpStart, tmpEnd); } } } x = (int) textPaint.measureText(tmpText, 0, middle); x = x - emojiStrW + emojiDraW; // x = (int) (textPaint.measureText(pureStr, 0, pureStr.length()) + emojiWidth); // Log.d(TAG, String.format("targetX: %d, currentX: %d, currentLength: %d, totalLength: %d, emojiStrW[%d], emojiDraW[%d]", targetX, x, middle, targetText.length(), emojiStrW, emojiDraW)); if (x > targetX) { // width: 0 tx x // length: start tl middle end // ----|---------|------------- // TO: start | *end // ----|--------|-------------- end = middle - emojiExcursion; } else if (x < targetX) { // width: 0 x tx // length: start middle tl end // --------------|-------|------ // TO: *start | end // ---------------|------|------ start = middle + 1; } else { break; } } // adjust x larger targetX while (x > targetX && middle > 0) { x = (int) textPaint.measureText(tmpText, 0, --middle); } // adjust x middle emoji span final Object[] ajustSpans = tmpText.getSpans(0, tmpText.length(), Object.class); for (Object adjustSpan : ajustSpans) { final int adjustStart = tmpText.getSpanStart(adjustSpan); final int adjustEnd = tmpText.getSpanEnd(adjustSpan); //[adjustStart, adjustEnd) if (middle >= adjustStart && middle < adjustEnd) { middle = adjustStart - 1; break; } } // finnal middle // sub sequence [0, middle + 1) & remove [middle +1, length] spans tmpText = (SpannableString) tmpText.subSequence(0, middle + 1); // Log.d(TAG, String.format("sub Sequence[0, %d), [%s] to [%s]", middle + 1, targetText, tmpText)); // add ... final SpannableString maxWidthSS = new SpannableString(tmpText + "..."); final Object[] maxWidthSpans = tmpText.getSpans(0, tmpText.length(), Object.class); if (maxWidthSpans != null) { for (Object maxWidthSpan : maxWidthSpans) { final int mwSpanStart = tmpText.getSpanStart(maxWidthSpan); final int mwSpanEnd = tmpText.getSpanEnd(maxWidthSpan); final int mwSpanFlag = tmpText.getSpanFlags(maxWidth); maxWidthSS.setSpan(maxWidthSpan, mwSpanStart, mwSpanEnd, mwSpanFlag); } } targetText = maxWidthSS; SPAN_MAXWIDTH_CACHE.put(maxWidthKey, targetText); Log.d(TAG, String.format("deal maxWidth %d", System.currentTimeMillis() - startTime)); return targetText; }
From source file:Main.java
/** * Recursive binary search to find the best size for the text. *//* w w w . j a v a2 s . c om*/ private static float getAutofitTextSize(CharSequence text, TextPaint paint, float targetWidth, int maxLines, float low, float high, float precision, DisplayMetrics displayMetrics) { float mid = (low + high) / 2.0f; int lineCount = 1; StaticLayout layout = null; paint.setTextSize(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX, mid, displayMetrics)); if (maxLines != 1) { layout = new StaticLayout(text, paint, (int) targetWidth, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, true); lineCount = layout.getLineCount(); } if (SPEW) Log.d(TAG, "low=" + low + " high=" + high + " mid=" + mid + " target=" + targetWidth + " maxLines=" + maxLines + " lineCount=" + lineCount); if (lineCount > maxLines) { // For the case that `text` has more newline characters than `maxLines`. if ((high - low) < precision) { return low; } return getAutofitTextSize(text, paint, targetWidth, maxLines, low, mid, precision, displayMetrics); } else if (lineCount < maxLines) { return getAutofitTextSize(text, paint, targetWidth, maxLines, mid, high, precision, displayMetrics); } else { float maxLineWidth = 0; if (maxLines == 1) { maxLineWidth = paint.measureText(text, 0, text.length()); } else { for (int i = 0; i < lineCount; i++) { if (layout.getLineWidth(i) > maxLineWidth) { maxLineWidth = layout.getLineWidth(i); } } } if ((high - low) < precision) { return low; } else if (maxLineWidth > targetWidth) { return getAutofitTextSize(text, paint, targetWidth, maxLines, low, mid, precision, displayMetrics); } else if (maxLineWidth < targetWidth) { return getAutofitTextSize(text, paint, targetWidth, maxLines, mid, high, precision, displayMetrics); } else { return mid; } } }
From source file:org.chromium.chrome.browser.omnibox.SuggestionView.java
/** * Sets the text of the first line of the omnibox suggestion. * * @param suggestionItem The item containing the suggestion data. * @param showDescriptionIfPresent Whether to show the description text of the suggestion if * the item contains valid data. * @param isUrlQuery Whether this suggestion is showing an URL. * @param isUrlHighlighted Whether the URL contains any highlighted matching sections. *//*from ww w . ja v a2 s . c om*/ private void setSuggestedQuery(OmniboxResultItem suggestionItem, boolean showDescriptionIfPresent, boolean isUrlQuery, boolean isUrlHighlighted) { String userQuery = suggestionItem.getMatchedQuery(); String suggestedQuery = null; List<MatchClassification> classifications; OmniboxSuggestion suggestion = suggestionItem.getSuggestion(); if (showDescriptionIfPresent && !TextUtils.isEmpty(suggestion.getUrl()) && !TextUtils.isEmpty(suggestion.getDescription())) { suggestedQuery = suggestion.getDescription(); classifications = suggestion.getDescriptionClassifications(); } else { suggestedQuery = suggestion.getDisplayText(); classifications = suggestion.getDisplayTextClassifications(); } if (suggestedQuery == null) { assert false : "Invalid suggestion sent with no displayable text"; suggestedQuery = ""; classifications = new ArrayList<MatchClassification>(); classifications.add(new MatchClassification(0, MatchClassificationStyle.NONE)); } if (mSuggestion.getType() == OmniboxSuggestionType.SEARCH_SUGGEST_TAIL) { String fillIntoEdit = mSuggestion.getFillIntoEdit(); // Data sanity checks. if (fillIntoEdit.startsWith(userQuery) && fillIntoEdit.endsWith(suggestedQuery) && fillIntoEdit.length() < userQuery.length() + suggestedQuery.length()) { final String ellipsisPrefix = "\u2026 "; suggestedQuery = ellipsisPrefix + suggestedQuery; // Offset the match classifications by the length of the ellipsis prefix to ensure // the highlighting remains correct. for (int i = 0; i < classifications.size(); i++) { classifications.set(i, new MatchClassification( classifications.get(i).offset + ellipsisPrefix.length(), classifications.get(i).style)); } classifications.add(0, new MatchClassification(0, MatchClassificationStyle.NONE)); if (DeviceFormFactor.isTablet(getContext())) { TextPaint tp = mContentsView.mTextLine1.getPaint(); mContentsView.mRequiredWidth = tp.measureText(fillIntoEdit, 0, fillIntoEdit.length()); mContentsView.mMatchContentsWidth = tp.measureText(suggestedQuery, 0, suggestedQuery.length()); // Update the max text widths values in SuggestionList. These will be passed to // the contents view on layout. mSuggestionDelegate.onTextWidthsUpdated(mContentsView.mRequiredWidth, mContentsView.mMatchContentsWidth); } } } Spannable str = SpannableString.valueOf(suggestedQuery); if (!isUrlHighlighted) applyHighlightToMatchRegions(str, classifications); mContentsView.mTextLine1.setText(str, BufferType.SPANNABLE); }
From source file:com.android.contacts.common.list.ShortcutIntentBuilder.java
/** * Generates a phone number shortcut icon. Adds an overlay describing the type of the phone * number, and if there is a photo also adds the call action icon. *//*from w w w . j a v a 2 s . co m*/ private Bitmap generatePhoneNumberIcon(Drawable photo, int phoneType, String phoneLabel, int actionResId) { final Resources r = mContext.getResources(); final float density = r.getDisplayMetrics().density; Bitmap phoneIcon = ((BitmapDrawable) r.getDrawableForDensity(actionResId, mIconDensity)).getBitmap(); Bitmap icon = generateQuickContactIcon(photo); Canvas canvas = new Canvas(icon); // Copy in the photo Paint photoPaint = new Paint(); photoPaint.setDither(true); photoPaint.setFilterBitmap(true); Rect dst = new Rect(0, 0, mIconSize, mIconSize); // Create an overlay for the phone number type CharSequence overlay = Phone.getTypeLabel(r, phoneType, phoneLabel); if (overlay != null) { TextPaint textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); textPaint.setTextSize(r.getDimension(R.dimen.shortcut_overlay_text_size)); textPaint.setColor(r.getColor(R.color.textColorIconOverlay)); textPaint.setShadowLayer(4f, 0, 2f, r.getColor(R.color.textColorIconOverlayShadow)); final FontMetricsInt fmi = textPaint.getFontMetricsInt(); // First fill in a darker background around the text to be drawn final Paint workPaint = new Paint(); workPaint.setColor(mOverlayTextBackgroundColor); workPaint.setStyle(Paint.Style.FILL); final int textPadding = r.getDimensionPixelOffset(R.dimen.shortcut_overlay_text_background_padding); final int textBandHeight = (fmi.descent - fmi.ascent) + textPadding * 2; dst.set(0, mIconSize - textBandHeight, mIconSize, mIconSize); canvas.drawRect(dst, workPaint); overlay = TextUtils.ellipsize(overlay, textPaint, mIconSize, TruncateAt.END); final float textWidth = textPaint.measureText(overlay, 0, overlay.length()); canvas.drawText(overlay, 0, overlay.length(), (mIconSize - textWidth) / 2, mIconSize - fmi.descent - textPadding, textPaint); } // Draw the phone action icon as an overlay Rect src = new Rect(0, 0, phoneIcon.getWidth(), phoneIcon.getHeight()); int iconWidth = icon.getWidth(); dst.set(iconWidth - ((int) (20 * density)), -1, iconWidth, ((int) (19 * density))); canvas.drawBitmap(phoneIcon, src, dst, photoPaint); canvas.setBitmap(null); return icon; }
From source file:com.silentcircle.contacts.list.ShortcutIntentBuilder.java
/** * Generates a phone number shortcut icon. Adds an overlay describing the type of the phone * number, and if there is a photo also adds the call action icon. *///from w ww . j a va 2 s . co m private Bitmap generatePhoneNumberIcon(Drawable photo, int phoneType, String phoneLabel, int actionResId) { final Resources r = mContext.getResources(); final float density = r.getDisplayMetrics().density; Bitmap phoneIcon = ((BitmapDrawable) r.getDrawableForDensity(actionResId, mIconDensity)).getBitmap(); Bitmap icon = generateQuickContactIcon(photo); Canvas canvas = new Canvas(icon); // Copy in the photo Paint photoPaint = new Paint(); photoPaint.setDither(true); photoPaint.setFilterBitmap(true); Rect dst = new Rect(0, 0, mIconSize, mIconSize); // Create an overlay for the phone number type CharSequence overlay = Phone.getTypeLabel(r, phoneType, phoneLabel); if (overlay != null) { TextPaint textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); textPaint.setTextSize(r.getDimension(R.dimen.shortcut_overlay_text_size)); textPaint.setColor(ContextCompat.getColor(mContext, R.color.textColorIconOverlay)); textPaint.setShadowLayer(4f, 0, 2f, ContextCompat.getColor(mContext, R.color.textColorIconOverlayShadow)); final FontMetricsInt fmi = textPaint.getFontMetricsInt(); // First fill in a darker background around the text to be drawn final Paint workPaint = new Paint(); workPaint.setColor(mOverlayTextBackgroundColor); workPaint.setStyle(Paint.Style.FILL); final int textPadding = r.getDimensionPixelOffset(R.dimen.shortcut_overlay_text_background_padding); final int textBandHeight = (fmi.descent - fmi.ascent) + textPadding * 2; dst.set(0, mIconSize - textBandHeight, mIconSize, mIconSize); canvas.drawRect(dst, workPaint); overlay = TextUtils.ellipsize(overlay, textPaint, mIconSize, TruncateAt.END); final float textWidth = textPaint.measureText(overlay, 0, overlay.length()); canvas.drawText(overlay, 0, overlay.length(), (mIconSize - textWidth) / 2, mIconSize - fmi.descent - textPadding, textPaint); } // Draw the phone action icon as an overlay Rect src = new Rect(0, 0, phoneIcon.getWidth(), phoneIcon.getHeight()); int iconWidth = icon.getWidth(); dst.set(iconWidth - ((int) (20 * density)), -1, iconWidth, ((int) (19 * density))); canvas.drawBitmap(phoneIcon, src, dst, photoPaint); canvas.setBitmap(null); return icon; }
From source file:com.android.contacts.ShortcutIntentBuilder.java
/** * Generates a phone number shortcut icon. Adds an overlay describing the type of the phone * number, and if there is a photo also adds the call action icon. *//* ww w . ja v a2 s . c o m*/ private Bitmap generatePhoneNumberIcon(Drawable photo, int phoneType, String phoneLabel, int actionResId) { final Resources r = mContext.getResources(); final float density = r.getDisplayMetrics().density; final Drawable phoneDrawable = r.getDrawableForDensity(actionResId, mIconDensity); // These icons have the same height and width so either is fine for the size. final Bitmap phoneIcon = BitmapUtil.drawableToBitmap(phoneDrawable, phoneDrawable.getIntrinsicHeight()); Bitmap icon = generateQuickContactIcon(photo); Canvas canvas = new Canvas(icon); // Copy in the photo Paint photoPaint = new Paint(); photoPaint.setDither(true); photoPaint.setFilterBitmap(true); Rect dst = new Rect(0, 0, mIconSize, mIconSize); // Create an overlay for the phone number type if we're pre-O. O created shortcuts have the // app badge which overlaps the type overlay. CharSequence overlay = Phone.getTypeLabel(r, phoneType, phoneLabel); if (!BuildCompat.isAtLeastO() && overlay != null) { TextPaint textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); textPaint.setTextSize(r.getDimension(R.dimen.shortcut_overlay_text_size)); textPaint.setColor(r.getColor(R.color.textColorIconOverlay)); textPaint.setShadowLayer(4f, 0, 2f, r.getColor(R.color.textColorIconOverlayShadow)); final FontMetricsInt fmi = textPaint.getFontMetricsInt(); // First fill in a darker background around the text to be drawn final Paint workPaint = new Paint(); workPaint.setColor(mOverlayTextBackgroundColor); workPaint.setStyle(Paint.Style.FILL); final int textPadding = r.getDimensionPixelOffset(R.dimen.shortcut_overlay_text_background_padding); final int textBandHeight = (fmi.descent - fmi.ascent) + textPadding * 2; dst.set(0, mIconSize - textBandHeight, mIconSize, mIconSize); canvas.drawRect(dst, workPaint); overlay = TextUtils.ellipsize(overlay, textPaint, mIconSize, TruncateAt.END); final float textWidth = textPaint.measureText(overlay, 0, overlay.length()); canvas.drawText(overlay, 0, overlay.length(), (mIconSize - textWidth) / 2, mIconSize - fmi.descent - textPadding, textPaint); } // Draw the phone action icon as an overlay int iconWidth = icon.getWidth(); if (BuildCompat.isAtLeastO()) { // On O we need to calculate where the phone icon goes slightly differently. The whole // canvas area is 108dp, a centered circle with a diameter of 66dp is the "safe zone". // So we start the drawing the phone icon at // 108dp - 21 dp (distance from right edge of safe zone to the edge of the canvas) // - 24 dp (size of the phone icon) on the x axis (left) // The y axis is simply 21dp for the distance to the safe zone (top). // See go/o-icons-eng for more details and a handy picture. final int left = (int) (mIconSize - (45 * density)); final int top = (int) (21 * density); canvas.drawBitmap(phoneIcon, left, top, photoPaint); } else { dst.set(iconWidth - ((int) (20 * density)), -1, iconWidth, ((int) (19 * density))); canvas.drawBitmap(phoneIcon, null, dst, photoPaint); } canvas.setBitmap(null); return icon; }
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. ja v a2 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; }
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);//from w w w .j a v a2s . co m // 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; }