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Diffstat (limited to 'java/src/com/android/inputmethod/latin/suggestions/SuggestionStripLayoutHelper.java')
| -rw-r--r-- | java/src/com/android/inputmethod/latin/suggestions/SuggestionStripLayoutHelper.java | 650 |
1 files changed, 0 insertions, 650 deletions
diff --git a/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripLayoutHelper.java b/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripLayoutHelper.java deleted file mode 100644 index 9577d0913..000000000 --- a/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripLayoutHelper.java +++ /dev/null @@ -1,650 +0,0 @@ -/* - * Copyright (C) 2013 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.android.inputmethod.latin.suggestions; - -import android.content.Context; -import android.content.res.Resources; -import android.content.res.TypedArray; -import android.graphics.Bitmap; -import android.graphics.Canvas; -import android.graphics.Color; -import android.graphics.Paint; -import android.graphics.Paint.Align; -import android.graphics.Rect; -import android.graphics.Typeface; -import android.graphics.drawable.BitmapDrawable; -import android.graphics.drawable.Drawable; -import android.text.Spannable; -import android.text.SpannableString; -import android.text.Spanned; -import android.text.TextPaint; -import android.text.TextUtils; -import android.text.style.CharacterStyle; -import android.text.style.StyleSpan; -import android.text.style.UnderlineSpan; -import android.util.AttributeSet; -import android.view.Gravity; -import android.view.View; -import android.view.ViewGroup; -import android.widget.LinearLayout; -import android.widget.TextView; - -import com.android.inputmethod.accessibility.AccessibilityUtils; -import com.android.inputmethod.annotations.UsedForTesting; -import com.android.inputmethod.latin.PunctuationSuggestions; -import com.android.inputmethod.latin.R; -import com.android.inputmethod.latin.SuggestedWords; -import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo; -import com.android.inputmethod.latin.settings.Settings; -import com.android.inputmethod.latin.settings.SettingsValues; -import com.android.inputmethod.latin.utils.ResourceUtils; -import com.android.inputmethod.latin.utils.ViewLayoutUtils; - -import java.util.ArrayList; - -import javax.annotation.Nonnull; -import javax.annotation.Nullable; - -final class SuggestionStripLayoutHelper { - private static final int DEFAULT_SUGGESTIONS_COUNT_IN_STRIP = 3; - private static final float DEFAULT_CENTER_SUGGESTION_PERCENTILE = 0.40f; - private static final int DEFAULT_MAX_MORE_SUGGESTIONS_ROW = 2; - private static final int PUNCTUATIONS_IN_STRIP = 5; - private static final float MIN_TEXT_XSCALE = 0.70f; - - public final int mPadding; - public final int mDividerWidth; - public final int mSuggestionsStripHeight; - private final int mSuggestionsCountInStrip; - public final int mMoreSuggestionsRowHeight; - private int mMaxMoreSuggestionsRow; - public final float mMinMoreSuggestionsWidth; - public final int mMoreSuggestionsBottomGap; - private boolean mMoreSuggestionsAvailable; - - // The index of these {@link ArrayList} is the position in the suggestion strip. The indices - // increase towards the right for LTR scripts and the left for RTL scripts, starting with 0. - // The position of the most important suggestion is in {@link #mCenterPositionInStrip} - private final ArrayList<TextView> mWordViews; - private final ArrayList<View> mDividerViews; - private final ArrayList<TextView> mDebugInfoViews; - - private final int mColorValidTypedWord; - private final int mColorTypedWord; - private final int mColorAutoCorrect; - private final int mColorSuggested; - private final float mAlphaObsoleted; - private final float mCenterSuggestionWeight; - private final int mCenterPositionInStrip; - private final int mTypedWordPositionWhenAutocorrect; - private final Drawable mMoreSuggestionsHint; - private static final String MORE_SUGGESTIONS_HINT = "\u2026"; - - private static final CharacterStyle BOLD_SPAN = new StyleSpan(Typeface.BOLD); - private static final CharacterStyle UNDERLINE_SPAN = new UnderlineSpan(); - - private final int mSuggestionStripOptions; - // These constants are the flag values of - // {@link R.styleable#SuggestionStripView_suggestionStripOptions} attribute. - private static final int AUTO_CORRECT_BOLD = 0x01; - private static final int AUTO_CORRECT_UNDERLINE = 0x02; - private static final int VALID_TYPED_WORD_BOLD = 0x04; - - public SuggestionStripLayoutHelper(final Context context, final AttributeSet attrs, - final int defStyle, final ArrayList<TextView> wordViews, - final ArrayList<View> dividerViews, final ArrayList<TextView> debugInfoViews) { - mWordViews = wordViews; - mDividerViews = dividerViews; - mDebugInfoViews = debugInfoViews; - - final TextView wordView = wordViews.get(0); - final View dividerView = dividerViews.get(0); - mPadding = wordView.getCompoundPaddingLeft() + wordView.getCompoundPaddingRight(); - dividerView.measure( - ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); - mDividerWidth = dividerView.getMeasuredWidth(); - - final Resources res = wordView.getResources(); - mSuggestionsStripHeight = res.getDimensionPixelSize( - R.dimen.config_suggestions_strip_height); - - final TypedArray a = context.obtainStyledAttributes(attrs, - R.styleable.SuggestionStripView, defStyle, R.style.SuggestionStripView); - mSuggestionStripOptions = a.getInt( - R.styleable.SuggestionStripView_suggestionStripOptions, 0); - mAlphaObsoleted = ResourceUtils.getFraction(a, - R.styleable.SuggestionStripView_alphaObsoleted, 1.0f); - mColorValidTypedWord = a.getColor(R.styleable.SuggestionStripView_colorValidTypedWord, 0); - mColorTypedWord = a.getColor(R.styleable.SuggestionStripView_colorTypedWord, 0); - mColorAutoCorrect = a.getColor(R.styleable.SuggestionStripView_colorAutoCorrect, 0); - mColorSuggested = a.getColor(R.styleable.SuggestionStripView_colorSuggested, 0); - mSuggestionsCountInStrip = a.getInt( - R.styleable.SuggestionStripView_suggestionsCountInStrip, - DEFAULT_SUGGESTIONS_COUNT_IN_STRIP); - mCenterSuggestionWeight = ResourceUtils.getFraction(a, - R.styleable.SuggestionStripView_centerSuggestionPercentile, - DEFAULT_CENTER_SUGGESTION_PERCENTILE); - mMaxMoreSuggestionsRow = a.getInt( - R.styleable.SuggestionStripView_maxMoreSuggestionsRow, - DEFAULT_MAX_MORE_SUGGESTIONS_ROW); - mMinMoreSuggestionsWidth = ResourceUtils.getFraction(a, - R.styleable.SuggestionStripView_minMoreSuggestionsWidth, 1.0f); - a.recycle(); - - mMoreSuggestionsHint = getMoreSuggestionsHint(res, - res.getDimension(R.dimen.config_more_suggestions_hint_text_size), - mColorAutoCorrect); - mCenterPositionInStrip = mSuggestionsCountInStrip / 2; - // Assuming there are at least three suggestions. Also, note that the suggestions are - // laid out according to script direction, so this is left of the center for LTR scripts - // and right of the center for RTL scripts. - mTypedWordPositionWhenAutocorrect = mCenterPositionInStrip - 1; - mMoreSuggestionsBottomGap = res.getDimensionPixelOffset( - R.dimen.config_more_suggestions_bottom_gap); - mMoreSuggestionsRowHeight = res.getDimensionPixelSize( - R.dimen.config_more_suggestions_row_height); - } - - public int getMaxMoreSuggestionsRow() { - return mMaxMoreSuggestionsRow; - } - - private int getMoreSuggestionsHeight() { - return mMaxMoreSuggestionsRow * mMoreSuggestionsRowHeight + mMoreSuggestionsBottomGap; - } - - public void setMoreSuggestionsHeight(final int remainingHeight) { - final int currentHeight = getMoreSuggestionsHeight(); - if (currentHeight <= remainingHeight) { - return; - } - - mMaxMoreSuggestionsRow = (remainingHeight - mMoreSuggestionsBottomGap) - / mMoreSuggestionsRowHeight; - } - - private static Drawable getMoreSuggestionsHint(final Resources res, final float textSize, - final int color) { - final Paint paint = new Paint(); - paint.setAntiAlias(true); - paint.setTextAlign(Align.CENTER); - paint.setTextSize(textSize); - paint.setColor(color); - final Rect bounds = new Rect(); - paint.getTextBounds(MORE_SUGGESTIONS_HINT, 0, MORE_SUGGESTIONS_HINT.length(), bounds); - final int width = Math.round(bounds.width() + 0.5f); - final int height = Math.round(bounds.height() + 0.5f); - final Bitmap buffer = Bitmap.createBitmap(width, (height * 3 / 2), Bitmap.Config.ARGB_8888); - final Canvas canvas = new Canvas(buffer); - canvas.drawText(MORE_SUGGESTIONS_HINT, width / 2, height, paint); - BitmapDrawable bitmapDrawable = new BitmapDrawable(res, buffer); - bitmapDrawable.setTargetDensity(canvas); - return bitmapDrawable; - } - - private CharSequence getStyledSuggestedWord(final SuggestedWords suggestedWords, - final int indexInSuggestedWords) { - if (indexInSuggestedWords >= suggestedWords.size()) { - return null; - } - final String word = suggestedWords.getLabel(indexInSuggestedWords); - // TODO: don't use the index to decide whether this is the auto-correction/typed word, as - // this is brittle - final boolean isAutoCorrection = suggestedWords.mWillAutoCorrect - && indexInSuggestedWords == SuggestedWords.INDEX_OF_AUTO_CORRECTION; - final boolean isTypedWordValid = suggestedWords.mTypedWordValid - && indexInSuggestedWords == SuggestedWords.INDEX_OF_TYPED_WORD; - if (!isAutoCorrection && !isTypedWordValid) { - return word; - } - - final Spannable spannedWord = new SpannableString(word); - final int options = mSuggestionStripOptions; - if ((isAutoCorrection && (options & AUTO_CORRECT_BOLD) != 0) - || (isTypedWordValid && (options & VALID_TYPED_WORD_BOLD) != 0)) { - addStyleSpan(spannedWord, BOLD_SPAN); - } - if (isAutoCorrection && (options & AUTO_CORRECT_UNDERLINE) != 0) { - addStyleSpan(spannedWord, UNDERLINE_SPAN); - } - return spannedWord; - } - - /** - * Convert an index of {@link SuggestedWords} to position in the suggestion strip. - * @param indexInSuggestedWords the index of {@link SuggestedWords}. - * @param suggestedWords the suggested words list - * @return Non-negative integer of the position in the suggestion strip. - * Negative integer if the word of the index shouldn't be shown on the suggestion strip. - */ - private int getPositionInSuggestionStrip(final int indexInSuggestedWords, - final SuggestedWords suggestedWords) { - final SettingsValues settingsValues = Settings.getInstance().getCurrent(); - final boolean shouldOmitTypedWord = shouldOmitTypedWord(suggestedWords.mInputStyle, - settingsValues.mGestureFloatingPreviewTextEnabled, - settingsValues.mShouldShowLxxSuggestionUi); - return getPositionInSuggestionStrip(indexInSuggestedWords, suggestedWords.mWillAutoCorrect, - settingsValues.mShouldShowLxxSuggestionUi && shouldOmitTypedWord, - mCenterPositionInStrip, mTypedWordPositionWhenAutocorrect); - } - - @UsedForTesting - static boolean shouldOmitTypedWord(final int inputStyle, - final boolean gestureFloatingPreviewTextEnabled, - final boolean shouldShowUiToAcceptTypedWord) { - final boolean omitTypedWord = (inputStyle == SuggestedWords.INPUT_STYLE_TYPING) - || (inputStyle == SuggestedWords.INPUT_STYLE_TAIL_BATCH) - || (inputStyle == SuggestedWords.INPUT_STYLE_UPDATE_BATCH - && gestureFloatingPreviewTextEnabled); - return shouldShowUiToAcceptTypedWord && omitTypedWord; - } - - @UsedForTesting - static int getPositionInSuggestionStrip(final int indexInSuggestedWords, - final boolean willAutoCorrect, final boolean omitTypedWord, - final int centerPositionInStrip, final int typedWordPositionWhenAutoCorrect) { - if (omitTypedWord) { - if (indexInSuggestedWords == SuggestedWords.INDEX_OF_TYPED_WORD) { - // Ignore. - return -1; - } - if (indexInSuggestedWords == SuggestedWords.INDEX_OF_AUTO_CORRECTION) { - // Center in the suggestion strip. - return centerPositionInStrip; - } - // If neither of those, the order in the suggestion strip is left of the center first - // then right of the center, to both edges of the suggestion strip. - // For example, center-1, center+1, center-2, center+2, and so on. - final int n = indexInSuggestedWords; - final int offsetFromCenter = (n % 2) == 0 ? -(n / 2) : (n / 2); - final int positionInSuggestionStrip = centerPositionInStrip + offsetFromCenter; - return positionInSuggestionStrip; - } - final int indexToDisplayMostImportantSuggestion; - final int indexToDisplaySecondMostImportantSuggestion; - if (willAutoCorrect) { - indexToDisplayMostImportantSuggestion = SuggestedWords.INDEX_OF_AUTO_CORRECTION; - indexToDisplaySecondMostImportantSuggestion = SuggestedWords.INDEX_OF_TYPED_WORD; - } else { - indexToDisplayMostImportantSuggestion = SuggestedWords.INDEX_OF_TYPED_WORD; - indexToDisplaySecondMostImportantSuggestion = SuggestedWords.INDEX_OF_AUTO_CORRECTION; - } - if (indexInSuggestedWords == indexToDisplayMostImportantSuggestion) { - // Center in the suggestion strip. - return centerPositionInStrip; - } - if (indexInSuggestedWords == indexToDisplaySecondMostImportantSuggestion) { - // Center-1. - return typedWordPositionWhenAutoCorrect; - } - // If neither of those, the order in the suggestion strip is right of the center first - // then left of the center, to both edges of the suggestion strip. - // For example, Center+1, center-2, center+2, center-3, and so on. - final int n = indexInSuggestedWords + 1; - final int offsetFromCenter = (n % 2) == 0 ? -(n / 2) : (n / 2); - final int positionInSuggestionStrip = centerPositionInStrip + offsetFromCenter; - return positionInSuggestionStrip; - } - - private int getSuggestionTextColor(final SuggestedWords suggestedWords, - final int indexInSuggestedWords) { - // Use identity for strings, not #equals : it's the typed word if it's the same object - final boolean isTypedWord = suggestedWords.getInfo(indexInSuggestedWords).isKindOf( - SuggestedWordInfo.KIND_TYPED); - - final int color; - if (indexInSuggestedWords == SuggestedWords.INDEX_OF_AUTO_CORRECTION - && suggestedWords.mWillAutoCorrect) { - color = mColorAutoCorrect; - } else if (isTypedWord && suggestedWords.mTypedWordValid) { - color = mColorValidTypedWord; - } else if (isTypedWord) { - color = mColorTypedWord; - } else { - color = mColorSuggested; - } - if (suggestedWords.mIsObsoleteSuggestions && !isTypedWord) { - return applyAlpha(color, mAlphaObsoleted); - } - return color; - } - - private static int applyAlpha(final int color, final float alpha) { - final int newAlpha = (int)(Color.alpha(color) * alpha); - return Color.argb(newAlpha, Color.red(color), Color.green(color), Color.blue(color)); - } - - private static void addDivider(final ViewGroup stripView, final View dividerView) { - stripView.addView(dividerView); - final LinearLayout.LayoutParams params = - (LinearLayout.LayoutParams)dividerView.getLayoutParams(); - params.gravity = Gravity.CENTER; - } - - /** - * Layout suggestions to the suggestions strip. And returns the start index of more - * suggestions. - * - * @param suggestedWords suggestions to be shown in the suggestions strip. - * @param stripView the suggestions strip view. - * @param placerView the view where the debug info will be placed. - * @return the start index of more suggestions. - */ - public int layoutAndReturnStartIndexOfMoreSuggestions( - final Context context, - final SuggestedWords suggestedWords, - final ViewGroup stripView, - final ViewGroup placerView) { - if (suggestedWords.isPunctuationSuggestions()) { - return layoutPunctuationsAndReturnStartIndexOfMoreSuggestions( - (PunctuationSuggestions)suggestedWords, stripView); - } - - final int wordCountToShow = suggestedWords.getWordCountToShow( - Settings.getInstance().getCurrent().mShouldShowLxxSuggestionUi); - final int startIndexOfMoreSuggestions = setupWordViewsAndReturnStartIndexOfMoreSuggestions( - suggestedWords, mSuggestionsCountInStrip); - final TextView centerWordView = mWordViews.get(mCenterPositionInStrip); - final int stripWidth = stripView.getWidth(); - final int centerWidth = getSuggestionWidth(mCenterPositionInStrip, stripWidth); - if (wordCountToShow == 1 || getTextScaleX(centerWordView.getText(), centerWidth, - centerWordView.getPaint()) < MIN_TEXT_XSCALE) { - // Layout only the most relevant suggested word at the center of the suggestion strip - // by consolidating all slots in the strip. - final int countInStrip = 1; - mMoreSuggestionsAvailable = (wordCountToShow > countInStrip); - layoutWord(context, mCenterPositionInStrip, stripWidth - mPadding); - stripView.addView(centerWordView); - setLayoutWeight(centerWordView, 1.0f, ViewGroup.LayoutParams.MATCH_PARENT); - if (SuggestionStripView.DBG) { - layoutDebugInfo(mCenterPositionInStrip, placerView, stripWidth); - } - final Integer lastIndex = (Integer)centerWordView.getTag(); - return (lastIndex == null ? 0 : lastIndex) + 1; - } - - final int countInStrip = mSuggestionsCountInStrip; - mMoreSuggestionsAvailable = (wordCountToShow > countInStrip); - @SuppressWarnings("unused") - int x = 0; - for (int positionInStrip = 0; positionInStrip < countInStrip; positionInStrip++) { - if (positionInStrip != 0) { - final View divider = mDividerViews.get(positionInStrip); - // Add divider if this isn't the left most suggestion in suggestions strip. - addDivider(stripView, divider); - x += divider.getMeasuredWidth(); - } - - final int width = getSuggestionWidth(positionInStrip, stripWidth); - final TextView wordView = layoutWord(context, positionInStrip, width); - stripView.addView(wordView); - setLayoutWeight(wordView, getSuggestionWeight(positionInStrip), - ViewGroup.LayoutParams.MATCH_PARENT); - x += wordView.getMeasuredWidth(); - - if (SuggestionStripView.DBG) { - layoutDebugInfo(positionInStrip, placerView, x); - } - } - return startIndexOfMoreSuggestions; - } - - /** - * Format appropriately the suggested word in {@link #mWordViews} specified by - * <code>positionInStrip</code>. When the suggested word doesn't exist, the corresponding - * {@link TextView} will be disabled and never respond to user interaction. The suggested word - * may be shrunk or ellipsized to fit in the specified width. - * - * The <code>positionInStrip</code> argument is the index in the suggestion strip. The indices - * increase towards the right for LTR scripts and the left for RTL scripts, starting with 0. - * The position of the most important suggestion is in {@link #mCenterPositionInStrip}. This - * usually doesn't match the index in <code>suggedtedWords</code> -- see - * {@link #getPositionInSuggestionStrip(int,SuggestedWords)}. - * - * @param positionInStrip the position in the suggestion strip. - * @param width the maximum width for layout in pixels. - * @return the {@link TextView} containing the suggested word appropriately formatted. - */ - private TextView layoutWord(final Context context, final int positionInStrip, final int width) { - final TextView wordView = mWordViews.get(positionInStrip); - final CharSequence word = wordView.getText(); - if (positionInStrip == mCenterPositionInStrip && mMoreSuggestionsAvailable) { - // TODO: This "more suggestions hint" should have a nicely designed icon. - wordView.setCompoundDrawablesWithIntrinsicBounds( - null, null, null, mMoreSuggestionsHint); - // HACK: Align with other TextViews that have no compound drawables. - wordView.setCompoundDrawablePadding(-mMoreSuggestionsHint.getIntrinsicHeight()); - } else { - wordView.setCompoundDrawablesWithIntrinsicBounds(null, null, null, null); - } - // {@link StyleSpan} in a content description may cause an issue of TTS/TalkBack. - // Use a simple {@link String} to avoid the issue. - wordView.setContentDescription( - TextUtils.isEmpty(word) - ? context.getResources().getString(R.string.spoken_empty_suggestion) - : word.toString()); - final CharSequence text = getEllipsizedTextWithSettingScaleX( - word, width, wordView.getPaint()); - final float scaleX = wordView.getTextScaleX(); - wordView.setText(text); // TextView.setText() resets text scale x to 1.0. - wordView.setTextScaleX(scaleX); - // A <code>wordView</code> should be disabled when <code>word</code> is empty in order to - // make it unclickable. - // With accessibility touch exploration on, <code>wordView</code> should be enabled even - // when it is empty to avoid announcing as "disabled". - wordView.setEnabled(!TextUtils.isEmpty(word) - || AccessibilityUtils.getInstance().isTouchExplorationEnabled()); - return wordView; - } - - private void layoutDebugInfo(final int positionInStrip, final ViewGroup placerView, - final int x) { - final TextView debugInfoView = mDebugInfoViews.get(positionInStrip); - final CharSequence debugInfo = debugInfoView.getText(); - if (debugInfo == null) { - return; - } - placerView.addView(debugInfoView); - debugInfoView.measure( - ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); - final int infoWidth = debugInfoView.getMeasuredWidth(); - final int y = debugInfoView.getMeasuredHeight(); - ViewLayoutUtils.placeViewAt( - debugInfoView, x - infoWidth, y, infoWidth, debugInfoView.getMeasuredHeight()); - } - - private int getSuggestionWidth(final int positionInStrip, final int maxWidth) { - final int paddings = mPadding * mSuggestionsCountInStrip; - final int dividers = mDividerWidth * (mSuggestionsCountInStrip - 1); - final int availableWidth = maxWidth - paddings - dividers; - return (int)(availableWidth * getSuggestionWeight(positionInStrip)); - } - - private float getSuggestionWeight(final int positionInStrip) { - if (positionInStrip == mCenterPositionInStrip) { - return mCenterSuggestionWeight; - } - // TODO: Revisit this for cases of 5 or more suggestions - return (1.0f - mCenterSuggestionWeight) / (mSuggestionsCountInStrip - 1); - } - - private int setupWordViewsAndReturnStartIndexOfMoreSuggestions( - final SuggestedWords suggestedWords, final int maxSuggestionInStrip) { - // Clear all suggestions first - for (int positionInStrip = 0; positionInStrip < maxSuggestionInStrip; ++positionInStrip) { - final TextView wordView = mWordViews.get(positionInStrip); - wordView.setText(null); - wordView.setTag(null); - // Make this inactive for touches in {@link #layoutWord(int,int)}. - if (SuggestionStripView.DBG) { - mDebugInfoViews.get(positionInStrip).setText(null); - } - } - int count = 0; - int indexInSuggestedWords; - for (indexInSuggestedWords = 0; indexInSuggestedWords < suggestedWords.size() - && count < maxSuggestionInStrip; indexInSuggestedWords++) { - final int positionInStrip = - getPositionInSuggestionStrip(indexInSuggestedWords, suggestedWords); - if (positionInStrip < 0) { - continue; - } - final TextView wordView = mWordViews.get(positionInStrip); - // {@link TextView#getTag()} is used to get the index in suggestedWords at - // {@link SuggestionStripView#onClick(View)}. - wordView.setTag(indexInSuggestedWords); - wordView.setText(getStyledSuggestedWord(suggestedWords, indexInSuggestedWords)); - wordView.setTextColor(getSuggestionTextColor(suggestedWords, indexInSuggestedWords)); - if (SuggestionStripView.DBG) { - mDebugInfoViews.get(positionInStrip).setText( - suggestedWords.getDebugString(indexInSuggestedWords)); - } - count++; - } - return indexInSuggestedWords; - } - - private int layoutPunctuationsAndReturnStartIndexOfMoreSuggestions( - final PunctuationSuggestions punctuationSuggestions, final ViewGroup stripView) { - final int countInStrip = Math.min(punctuationSuggestions.size(), PUNCTUATIONS_IN_STRIP); - for (int positionInStrip = 0; positionInStrip < countInStrip; positionInStrip++) { - if (positionInStrip != 0) { - // Add divider if this isn't the left most suggestion in suggestions strip. - addDivider(stripView, mDividerViews.get(positionInStrip)); - } - - final TextView wordView = mWordViews.get(positionInStrip); - final String punctuation = punctuationSuggestions.getLabel(positionInStrip); - // {@link TextView#getTag()} is used to get the index in suggestedWords at - // {@link SuggestionStripView#onClick(View)}. - wordView.setTag(positionInStrip); - wordView.setText(punctuation); - wordView.setContentDescription(punctuation); - wordView.setTextScaleX(1.0f); - wordView.setCompoundDrawables(null, null, null, null); - wordView.setTextColor(mColorAutoCorrect); - stripView.addView(wordView); - setLayoutWeight(wordView, 1.0f, mSuggestionsStripHeight); - } - mMoreSuggestionsAvailable = (punctuationSuggestions.size() > countInStrip); - return countInStrip; - } - - public void layoutImportantNotice(final View importantNoticeStrip, - final String importantNoticeTitle) { - final TextView titleView = (TextView)importantNoticeStrip.findViewById( - R.id.important_notice_title); - final int width = titleView.getWidth() - titleView.getPaddingLeft() - - titleView.getPaddingRight(); - titleView.setTextColor(mColorAutoCorrect); - titleView.setText(importantNoticeTitle); // TextView.setText() resets text scale x to 1.0. - final float titleScaleX = getTextScaleX(importantNoticeTitle, width, titleView.getPaint()); - titleView.setTextScaleX(titleScaleX); - } - - static void setLayoutWeight(final View v, final float weight, final int height) { - final ViewGroup.LayoutParams lp = v.getLayoutParams(); - if (lp instanceof LinearLayout.LayoutParams) { - final LinearLayout.LayoutParams llp = (LinearLayout.LayoutParams)lp; - llp.weight = weight; - llp.width = 0; - llp.height = height; - } - } - - private static float getTextScaleX(@Nullable final CharSequence text, final int maxWidth, - final TextPaint paint) { - paint.setTextScaleX(1.0f); - final int width = getTextWidth(text, paint); - if (width <= maxWidth || maxWidth <= 0) { - return 1.0f; - } - return maxWidth / (float) width; - } - - @Nullable - private static CharSequence getEllipsizedTextWithSettingScaleX( - @Nullable final CharSequence text, final int maxWidth, @Nonnull final TextPaint paint) { - if (text == null) { - return null; - } - final float scaleX = getTextScaleX(text, maxWidth, paint); - if (scaleX >= MIN_TEXT_XSCALE) { - paint.setTextScaleX(scaleX); - return text; - } - - // <code>text</code> must be ellipsized with minimum text scale x. - paint.setTextScaleX(MIN_TEXT_XSCALE); - final boolean hasBoldStyle = hasStyleSpan(text, BOLD_SPAN); - final boolean hasUnderlineStyle = hasStyleSpan(text, UNDERLINE_SPAN); - // TextUtils.ellipsize erases any span object existed after ellipsized point. - // We have to restore these spans afterward. - final CharSequence ellipsizedText = TextUtils.ellipsize( - text, paint, maxWidth, TextUtils.TruncateAt.MIDDLE); - if (!hasBoldStyle && !hasUnderlineStyle) { - return ellipsizedText; - } - final Spannable spannableText = (ellipsizedText instanceof Spannable) - ? (Spannable)ellipsizedText : new SpannableString(ellipsizedText); - if (hasBoldStyle) { - addStyleSpan(spannableText, BOLD_SPAN); - } - if (hasUnderlineStyle) { - addStyleSpan(spannableText, UNDERLINE_SPAN); - } - return spannableText; - } - - private static boolean hasStyleSpan(@Nullable final CharSequence text, - final CharacterStyle style) { - if (text instanceof Spanned) { - return ((Spanned)text).getSpanStart(style) >= 0; - } - return false; - } - - private static void addStyleSpan(@Nonnull final Spannable text, final CharacterStyle style) { - text.removeSpan(style); - text.setSpan(style, 0, text.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE); - } - - private static int getTextWidth(@Nullable final CharSequence text, final TextPaint paint) { - if (TextUtils.isEmpty(text)) { - return 0; - } - final int length = text.length(); - final float[] widths = new float[length]; - final int count; - final Typeface savedTypeface = paint.getTypeface(); - try { - paint.setTypeface(getTextTypeface(text)); - count = paint.getTextWidths(text, 0, length, widths); - } finally { - paint.setTypeface(savedTypeface); - } - int width = 0; - for (int i = 0; i < count; i++) { - width += Math.round(widths[i] + 0.5f); - } - return width; - } - - private static Typeface getTextTypeface(@Nullable final CharSequence text) { - return hasStyleSpan(text, BOLD_SPAN) ? Typeface.DEFAULT_BOLD : Typeface.DEFAULT; - } -} |