diff options
Diffstat (limited to 'java/src/com/android/inputmethod/latin/CandidateView.java')
| -rw-r--r-- | java/src/com/android/inputmethod/latin/CandidateView.java | 478 |
1 files changed, 316 insertions, 162 deletions
diff --git a/java/src/com/android/inputmethod/latin/CandidateView.java b/java/src/com/android/inputmethod/latin/CandidateView.java index a5bfea0f8..7ec18b38a 100644 --- a/java/src/com/android/inputmethod/latin/CandidateView.java +++ b/java/src/com/android/inputmethod/latin/CandidateView.java @@ -21,6 +21,7 @@ import android.content.res.Resources; import android.content.res.TypedArray; import android.graphics.Color; import android.graphics.Typeface; +import android.graphics.drawable.Drawable; import android.os.Message; import android.text.Spannable; import android.text.SpannableString; @@ -30,6 +31,7 @@ import android.text.TextUtils; import android.text.style.BackgroundColorSpan; import android.text.style.CharacterStyle; import android.text.style.ForegroundColorSpan; +import android.text.style.StyleSpan; import android.text.style.UnderlineSpan; import android.util.AttributeSet; import android.view.Gravity; @@ -38,7 +40,6 @@ import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnLongClickListener; import android.view.ViewGroup; -import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.PopupWindow; import android.widget.TextView; @@ -57,24 +58,29 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo public void pickSuggestionManually(int index, CharSequence word); } + private static final CharacterStyle BOLD_SPAN = new StyleSpan(Typeface.BOLD); private static final CharacterStyle UNDERLINE_SPAN = new UnderlineSpan(); // The maximum number of suggestions available. See {@link Suggest#mPrefMaxSuggestions}. private static final int MAX_SUGGESTIONS = 18; - private static final int MATCH_PARENT = MeasureSpec.makeMeasureSpec( - -1, MeasureSpec.UNSPECIFIED); + private static final int WRAP_CONTENT = ViewGroup.LayoutParams.WRAP_CONTENT; + private static final int MATCH_PARENT = ViewGroup.LayoutParams.MATCH_PARENT; private static final boolean DBG = LatinImeLogger.sDBG; - private final View mCandidatesStrip; - private static final int NUM_CANDIDATES_IN_STRIP = 3; - private final ImageView mExpandCandidatesPane; - private final ImageView mCloseCandidatesPane; + private final ViewGroup mCandidatesStrip; + private final int mCandidateCountInStrip; + private static final int DEFAULT_CANDIDATE_COUNT_IN_STRIP = 3; + private final ViewGroup mCandidatesPaneControl; + private final TextView mExpandCandidatesPane; + private final TextView mCloseCandidatesPane; private ViewGroup mCandidatesPane; private ViewGroup mCandidatesPaneContainer; private View mKeyboardView; + private final ArrayList<TextView> mWords = new ArrayList<TextView>(); private final ArrayList<TextView> mInfos = new ArrayList<TextView>(); private final ArrayList<View> mDividers = new ArrayList<View>(); + private final int mCandidateStripHeight; private final CharacterStyle mInvertedForegroundColorSpan; private final CharacterStyle mInvertedBackgroundColorSpan; @@ -85,6 +91,7 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo private final int mColorTypedWord; private final int mColorAutoCorrect; private final int mColorSuggestedCandidate; + private final PopupWindow mPreviewPopup; private final TextView mPreviewText; @@ -96,8 +103,9 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo private boolean mShowingAutoCorrectionInverted; private boolean mShowingAddToDictionary; - private static final float MIN_TEXT_XSCALE = 0.4f; - private static final String ELLIPSIS = "\u2026"; + private final CandidateViewLayoutParams mParams; + private static final int PUNCTUATIONS_IN_STRIP = 6; + private static final float MIN_TEXT_XSCALE = 0.75f; private final UiHandler mHandler = new UiHandler(this); @@ -150,6 +158,115 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo } } + private static class CandidateViewLayoutParams { + public final TextPaint mPaint; + public final int mPadding; + public final int mDividerWidth; + public final int mDividerHeight; + public final int mControlWidth; + private final int mAutoCorrectHighlight; + + public final ArrayList<CharSequence> mTexts = new ArrayList<CharSequence>(); + + public int mCountInStrip; + // True if the mCountInStrip suggestions can fit in suggestion strip in equally divided + // width without squeezing the text. + public boolean mCanUseFixedWidthColumns; + public int mMaxWidth; + public int mAvailableWidthForWords; + public int mConstantWidthForPaddings; + public int mVariableWidthForWords; + public float mScaleX; + + public CandidateViewLayoutParams(Resources res, TextView word, View divider, View control, + int autoCorrectHighlight) { + mPaint = new TextPaint(); + final float textSize = res.getDimension(R.dimen.candidate_text_size); + mPaint.setTextSize(textSize); + mPadding = word.getCompoundPaddingLeft() + word.getCompoundPaddingRight(); + divider.measure(WRAP_CONTENT, MATCH_PARENT); + mDividerWidth = divider.getMeasuredWidth(); + mDividerHeight = divider.getMeasuredHeight(); + mControlWidth = control.getMeasuredWidth(); + mAutoCorrectHighlight = autoCorrectHighlight; + } + + public void layoutStrip(SuggestedWords suggestions, int maxWidth, int maxCount) { + final int size = suggestions.size(); + setupTexts(suggestions, size, mAutoCorrectHighlight); + mCountInStrip = Math.min(maxCount, size); + mScaleX = 1.0f; + + do { + mMaxWidth = maxWidth; + if (size > mCountInStrip) { + mMaxWidth -= mControlWidth; + } + + tryLayout(); + + if (mCanUseFixedWidthColumns) { + return; + } + if (mVariableWidthForWords <= mAvailableWidthForWords) { + return; + } + + final float scaleX = mAvailableWidthForWords / (float)mVariableWidthForWords; + if (scaleX >= MIN_TEXT_XSCALE) { + mScaleX = scaleX; + return; + } + + mCountInStrip--; + } while (mCountInStrip > 1); + } + + public void tryLayout() { + final int maxCount = mCountInStrip; + final int dividers = mDividerWidth * (maxCount - 1); + mConstantWidthForPaddings = dividers + mPadding * maxCount; + mAvailableWidthForWords = mMaxWidth - mConstantWidthForPaddings; + + mPaint.setTextScaleX(mScaleX); + final int maxFixedWidthForWord = (mMaxWidth - dividers) / maxCount - mPadding; + mCanUseFixedWidthColumns = true; + mVariableWidthForWords = 0; + for (int i = 0; i < maxCount; i++) { + final int width = getTextWidth(mTexts.get(i), mPaint); + if (width > maxFixedWidthForWord) + mCanUseFixedWidthColumns = false; + mVariableWidthForWords += width; + } + } + + private void setupTexts(SuggestedWords suggestions, int count, int autoCorrectHighlight) { + mTexts.clear(); + for (int i = 0; i < count; i++) { + final CharSequence suggestion = suggestions.getWord(i); + if (suggestion == null) continue; + + final boolean isAutoCorrect = suggestions.mHasMinimalSuggestion + && ((i == 1 && !suggestions.mTypedWordValid) + || (i == 0 && suggestions.mTypedWordValid)); + // HACK: even if i == 0, we use mColorOther when this suggestion's length is 1 + // and there are multiple suggestions, such as the default punctuation list. + // TODO: Need to revisit this logic with bigram suggestions + final CharSequence styled = getStyledCandidateWord(suggestion, isAutoCorrect, + autoCorrectHighlight); + mTexts.add(styled); + } + } + + @Override + public String toString() { + return String.format( + "count=%d width=%d avail=%d fixcol=%s scaleX=%4.2f const=%d var=%d", + mCountInStrip, mMaxWidth, mAvailableWidthForWords, mCanUseFixedWidthColumns, + mScaleX, mConstantWidthForPaddings, mVariableWidthForWords); + } + } + /** * Construct a CandidateView for showing suggested words for completion. * @param context @@ -173,6 +290,16 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo setBackgroundDrawable(LinearLayoutCompatUtils.getBackgroundDrawable( context, attrs, defStyle, R.style.CandidateViewStyle)); + final TypedArray a = context.obtainStyledAttributes( + attrs, R.styleable.CandidateView, defStyle, R.style.CandidateViewStyle); + mAutoCorrectHighlight = a.getInt(R.styleable.CandidateView_autoCorrectHighlight, 0); + mColorTypedWord = a.getColor(R.styleable.CandidateView_colorTypedWord, 0); + mColorAutoCorrect = a.getColor(R.styleable.CandidateView_colorAutoCorrect, 0); + mColorSuggestedCandidate = a.getColor(R.styleable.CandidateView_colorSuggested, 0); + mCandidateCountInStrip = a.getInt( + R.styleable.CandidateView_candidateCountInStrip, DEFAULT_CANDIDATE_COUNT_IN_STRIP); + a.recycle(); + Resources res = context.getResources(); LayoutInflater inflater = LayoutInflater.from(context); inflater.inflate(R.layout.candidates_strip, this); @@ -184,74 +311,57 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo mPreviewPopup.setContentView(mPreviewText); mPreviewPopup.setBackgroundDrawable(null); - mCandidatesStrip = findViewById(R.id.candidates_strip); + mCandidatesStrip = (ViewGroup)findViewById(R.id.candidates_strip); mCandidateStripHeight = res.getDimensionPixelOffset(R.dimen.candidate_strip_height); for (int i = 0; i < MAX_SUGGESTIONS; i++) { - final TextView word, info; - switch (i) { - case 0: - word = (TextView)findViewById(R.id.word_left); - info = (TextView)findViewById(R.id.info_left); - break; - case 1: - word = (TextView)findViewById(R.id.word_center); - info = (TextView)findViewById(R.id.info_center); - break; - case 2: - word = (TextView)findViewById(R.id.word_right); - info = (TextView)findViewById(R.id.info_right); - break; - default: - word = (TextView)inflater.inflate(R.layout.candidate_word, null); - info = (TextView)inflater.inflate(R.layout.candidate_info, null); - break; - } + final TextView word = (TextView)inflater.inflate(R.layout.candidate_word, null); word.setTag(i); word.setOnClickListener(this); if (i == 0) word.setOnLongClickListener(this); mWords.add(word); - mInfos.add(info); - if (i > 0) { - final View divider = inflater.inflate(R.layout.candidate_divider, null); - divider.measure(MATCH_PARENT, MATCH_PARENT); - mDividers.add(divider); - } + mInfos.add((TextView)inflater.inflate(R.layout.candidate_info, null)); + mDividers.add(inflater.inflate(R.layout.candidate_divider, null)); } mTouchToSave = findViewById(R.id.touch_to_save); mWordToSave = (TextView)findViewById(R.id.word_to_save); mWordToSave.setOnClickListener(this); - final TypedArray a = context.obtainStyledAttributes( - attrs, R.styleable.CandidateView, defStyle, R.style.CandidateViewStyle); - mAutoCorrectHighlight = a.getInt(R.styleable.CandidateView_autoCorrectHighlight, 0); - mColorTypedWord = a.getColor(R.styleable.CandidateView_colorTypedWord, 0); - mColorAutoCorrect = a.getColor(R.styleable.CandidateView_colorAutoCorrect, 0); - mColorSuggestedCandidate = a.getColor(R.styleable.CandidateView_colorSuggested, 0); mInvertedForegroundColorSpan = new ForegroundColorSpan(mColorTypedWord ^ 0x00ffffff); mInvertedBackgroundColorSpan = new BackgroundColorSpan(mColorTypedWord); - mExpandCandidatesPane = (ImageView)findViewById(R.id.expand_candidates_pane); - mExpandCandidatesPane.setImageDrawable( - a.getDrawable(R.styleable.CandidateView_iconExpandPane)); + final TypedArray keyboardViewAttr = context.obtainStyledAttributes( + attrs, R.styleable.KeyboardView, R.attr.keyboardViewStyle, R.style.KeyboardView); + final Drawable keyBackground = keyboardViewAttr.getDrawable( + R.styleable.KeyboardView_keyBackground); + final int keyTextColor = keyboardViewAttr.getColor( + R.styleable.KeyboardView_keyTextColor, 0xFF000000); + keyboardViewAttr.recycle(); + + mCandidatesPaneControl = (ViewGroup)findViewById(R.id.candidates_pane_control); + mExpandCandidatesPane = (TextView)findViewById(R.id.expand_candidates_pane); + mExpandCandidatesPane.setBackgroundDrawable(keyBackground); + mExpandCandidatesPane.setTextColor(keyTextColor); mExpandCandidatesPane.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { expandCandidatesPane(); } }); - mCloseCandidatesPane = (ImageView)findViewById(R.id.close_candidates_pane); - mCloseCandidatesPane.setImageDrawable( - a.getDrawable(R.styleable.CandidateView_iconClosePane)); + mCloseCandidatesPane = (TextView)findViewById(R.id.close_candidates_pane); + mCloseCandidatesPane.setBackgroundDrawable(keyBackground); + mCloseCandidatesPane.setTextColor(keyTextColor); mCloseCandidatesPane.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { closeCandidatesPane(); } }); + mCandidatesPaneControl.measure(WRAP_CONTENT, WRAP_CONTENT); - a.recycle(); + mParams = new CandidateViewLayoutParams(res, + mWords.get(0), mDividers.get(0), mCandidatesPaneControl, mAutoCorrectHighlight); } /** @@ -272,6 +382,7 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo if (suggestions == null) return; mSuggestions = suggestions; + mExpandCandidatesPane.setEnabled(false); if (mShowingAutoCorrectionInverted) { mHandler.postUpdateSuggestions(); } else { @@ -279,15 +390,14 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo } } - private CharSequence getStyledCandidateWord(CharSequence word, TextView v, - boolean isAutoCorrect) { - v.setTypeface(Typeface.DEFAULT); + private static CharSequence getStyledCandidateWord(CharSequence word, boolean isAutoCorrect, + int autoCorrectHighlight) { if (!isAutoCorrect) return word; final Spannable spannedWord = new SpannableString(word); - if ((mAutoCorrectHighlight & AUTO_CORRECT_BOLD) != 0) - v.setTypeface(Typeface.DEFAULT_BOLD); - if ((mAutoCorrectHighlight & AUTO_CORRECT_UNDERLINE) != 0) + if ((autoCorrectHighlight & AUTO_CORRECT_BOLD) != 0) + spannedWord.setSpan(BOLD_SPAN, 0, word.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE); + if ((autoCorrectHighlight & AUTO_CORRECT_UNDERLINE) != 0) spannedWord.setSpan(UNDERLINE_SPAN, 0, word.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE); return spannedWord; } @@ -313,113 +423,164 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo private void updateSuggestions() { final SuggestedWords suggestions = mSuggestions; final List<SuggestedWordInfo> suggestedWordInfoList = suggestions.mSuggestedWordInfoList; + final int paneWidth = getWidth(); + final CandidateViewLayoutParams params = mParams; clear(); - final int paneWidth = getWidth(); - final int dividerWidth = mDividers.get(0).getMeasuredWidth(); - final int dividerHeight = mDividers.get(0).getMeasuredHeight(); - int x = 0; - int y = 0; - int fromIndex = NUM_CANDIDATES_IN_STRIP; - final int count = Math.min(mWords.size(), suggestions.size()); closeCandidatesPane(); - mExpandCandidatesPane.setVisibility(count > NUM_CANDIDATES_IN_STRIP ? VISIBLE : GONE); + if (suggestions.size() == 0) + return; + + params.layoutStrip(suggestions, paneWidth, suggestions.isPunctuationSuggestions() + ? PUNCTUATIONS_IN_STRIP : mCandidateCountInStrip); + + final int count = Math.min(mWords.size(), suggestions.size()); + if (count <= params.mCountInStrip && !DBG) { + mCandidatesPaneControl.setVisibility(GONE); + } else { + mCandidatesPaneControl.setVisibility(VISIBLE); + mExpandCandidatesPane.setVisibility(VISIBLE); + mExpandCandidatesPane.setEnabled(true); + } + + final int countInStrip = params.mCountInStrip; + View centeringFrom = null, lastView = null; + int x = 0, y = 0, infoX = 0; for (int i = 0; i < count; i++) { - final CharSequence suggestion = suggestions.getWord(i); + final int pos; + if (i <= 1) { + final boolean willAutoCorrect = !suggestions.mTypedWordValid + && suggestions.mHasMinimalSuggestion; + pos = willAutoCorrect ? 1 - i : i; + } else { + pos = i; + } + final CharSequence suggestion = suggestions.getWord(pos); if (suggestion == null) continue; final SuggestedWordInfo suggestionInfo = (suggestedWordInfoList != null) - ? suggestedWordInfoList.get(i) : null; + ? suggestedWordInfoList.get(pos) : null; final boolean isAutoCorrect = suggestions.mHasMinimalSuggestion - && ((i == 1 && !suggestions.mTypedWordValid) - || (i == 0 && suggestions.mTypedWordValid)); + && ((pos == 1 && !suggestions.mTypedWordValid) + || (pos == 0 && suggestions.mTypedWordValid)); // HACK: even if i == 0, we use mColorOther when this suggestion's length is 1 // and there are multiple suggestions, such as the default punctuation list. // TODO: Need to revisit this logic with bigram suggestions - final boolean isSuggestedCandidate = (i != 0); + final boolean isSuggestedCandidate = (pos != 0); final boolean isPunctuationSuggestions = (suggestion.length() == 1 && count > 1); - final TextView word = mWords.get(i); + final TextView word = mWords.get(pos); + final TextPaint paint = word.getPaint(); // TODO: Reorder candidates in strip as appropriate. The center candidate should hold // the word when space is typed (valid typed word or auto corrected word). word.setTextColor(getCandidateTextColor(isAutoCorrect, isSuggestedCandidate || isPunctuationSuggestions, suggestionInfo)); - final CharSequence text = getStyledCandidateWord(suggestion, word, isAutoCorrect); - if (i < NUM_CANDIDATES_IN_STRIP) { - final View parent = (View)word.getParent(); - final int width = parent.getWidth() - word.getPaddingLeft() - - word.getPaddingRight(); - setTextWithAutoScaleAndEllipsis(text, width, word); - } else { - setTextWithAutoScaleAndEllipsis(text, paneWidth, word); - } + final CharSequence styled = params.mTexts.get(pos); final TextView info; if (DBG && suggestionInfo != null && !TextUtils.isEmpty(suggestionInfo.getDebugString())) { info = mInfos.get(i); info.setText(suggestionInfo.getDebugString()); - info.setVisibility(View.VISIBLE); } else { info = null; } - if (i < NUM_CANDIDATES_IN_STRIP) { + final CharSequence text; + final float scaleX; + if (i < countInStrip) { + if (i == 0 && params.mCountInStrip == 1) { + text = getEllipsizedText(styled, params.mMaxWidth, paint); + scaleX = paint.getTextScaleX(); + } else { + text = styled; + scaleX = params.mScaleX; + } + word.setText(text); + word.setTextScaleX(scaleX); + if (i != 0) { + // Add divider if this isn't the left most suggestion in candidate strip. + mCandidatesStrip.addView(mDividers.get(i)); + } + mCandidatesStrip.addView(word); + if (params.mCanUseFixedWidthColumns) { + setLayoutWeight(word, 1.0f, mCandidateStripHeight); + } else { + final int width = getTextWidth(text, paint) + params.mPadding; + setLayoutWeight(word, width, mCandidateStripHeight); + } if (info != null) { - word.measure(MATCH_PARENT, MATCH_PARENT); - info.measure(MATCH_PARENT, MATCH_PARENT); - final int width = word.getMeasuredWidth(); - final int infoWidth = info.getMeasuredWidth(); - FrameLayoutCompatUtils.placeViewAt( - info, width - infoWidth, 0, infoWidth, info.getMeasuredHeight()); + mCandidatesPane.addView(info); + info.measure(WRAP_CONTENT, WRAP_CONTENT); + final int width = info.getMeasuredWidth(); + y = info.getMeasuredHeight(); + FrameLayoutCompatUtils.placeViewAt(info, infoX, 0, width, y); + infoX += width * 2; } } else { - word.measure(MATCH_PARENT, MATCH_PARENT); - final int width = word.getMeasuredWidth(); - final int height = word.getMeasuredHeight(); - // TODO: Handle overflow case. - if (dividerWidth + x + width >= paneWidth) { - centeringCandidates(fromIndex, i - 1, x, paneWidth); + paint.setTextScaleX(1.0f); + final int textWidth = getTextWidth(styled, paint); + int available = paneWidth - x - params.mPadding; + if (textWidth >= available) { + // Needs new row, centering previous row. + centeringCandidates(centeringFrom, lastView, x, paneWidth); x = 0; y += mCandidateStripHeight; - fromIndex = i; } if (x != 0) { - final View divider = mDividers.get(i - NUM_CANDIDATES_IN_STRIP); + // Add divider if this isn't the left most suggestion in current row. + final View divider = mDividers.get(i); mCandidatesPane.addView(divider); FrameLayoutCompatUtils.placeViewAt( - divider, x, y + (mCandidateStripHeight - dividerHeight) / 2, - dividerWidth, dividerHeight); - x += dividerWidth; + divider, x, y + (mCandidateStripHeight - params.mDividerHeight) / 2, + params.mDividerWidth, params.mDividerHeight); + x += params.mDividerWidth; } + available = paneWidth - x - params.mPadding; + text = getEllipsizedText(styled, available, paint); + scaleX = paint.getTextScaleX(); + word.setText(text); + word.setTextScaleX(scaleX); mCandidatesPane.addView(word); + lastView = word; + if (x == 0) centeringFrom = word; + word.measure(WRAP_CONTENT, + MeasureSpec.makeMeasureSpec(mCandidateStripHeight, MeasureSpec.EXACTLY)); + final int width = word.getMeasuredWidth(); + final int height = word.getMeasuredHeight(); FrameLayoutCompatUtils.placeViewAt( word, x, y + (mCandidateStripHeight - height) / 2, width, height); + x += width; if (info != null) { mCandidatesPane.addView(info); - info.measure(MATCH_PARENT, MATCH_PARENT); + lastView = info; + info.measure(WRAP_CONTENT, WRAP_CONTENT); final int infoWidth = info.getMeasuredWidth(); FrameLayoutCompatUtils.placeViewAt( - info, x + width - infoWidth, y, infoWidth, info.getMeasuredHeight()); + info, x - infoWidth, y, infoWidth, info.getMeasuredHeight()); } - x += width; } } if (x != 0) { // Centering last candidates row. - centeringCandidates(fromIndex, count - 1, x, paneWidth); + centeringCandidates(centeringFrom, lastView, x, paneWidth); } } - private void centeringCandidates(int from, int to, int width, int paneWidth) { - final ViewGroup pane = mCandidatesPane; - final int fromIndex = pane.indexOfChild(mWords.get(from)); - final int toIndex; - if (mInfos.get(to).getParent() != null) { - toIndex = pane.indexOfChild(mInfos.get(to)); - } else { - toIndex = pane.indexOfChild(mWords.get(to)); + private static void setLayoutWeight(View v, float weight, 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 void centeringCandidates(View from, View to, int width, int paneWidth) { + final ViewGroup pane = mCandidatesPane; + final int fromIndex = pane.indexOfChild(from); + final int toIndex = pane.indexOfChild(to); final int offset = (paneWidth - width) / 2; for (int index = fromIndex; index <= toIndex; index++) { offsetMargin(pane.getChildAt(index), offset, 0); @@ -436,73 +597,68 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo } } - private static void setTextWithAutoScaleAndEllipsis(CharSequence text, int w, TextView v) { - // To prevent partially rendered character at the end of text, subtract few extra pixels - // from the width. - final int width = w - 4; - - final TextPaint paint = v.getPaint(); - final int textWidth = getTextWidth(text, paint, 1.0f); - if (textWidth < width || textWidth == 0 || width <= 0) { - v.setTextScaleX(1.0f); - v.setText(text); - return; - } - - final float scaleX = Math.min((float)width / textWidth, 1.0f); + private static CharSequence getEllipsizedText(CharSequence text, int maxWidth, + TextPaint paint) { + paint.setTextScaleX(1.0f); + final int width = getTextWidth(text, paint); + final float scaleX = Math.min(maxWidth / (float)width, 1.0f); if (scaleX >= MIN_TEXT_XSCALE) { - v.setTextScaleX(scaleX); - v.setText(text); - return; + paint.setTextScaleX(scaleX); + return text; } - final int truncatedWidth = width - getTextWidth(ELLIPSIS, paint, MIN_TEXT_XSCALE); - final CharSequence ellipsized = getTextEllipsizedAtStart(text, paint, truncatedWidth); - v.setTextScaleX(MIN_TEXT_XSCALE); - v.setText(ELLIPSIS); - v.append(ellipsized); + // Note that TextUtils.ellipsize() use text-x-scale as 1.0 if ellipsize is needed. To get + // squeezed and ellipsezed text, passes enlarged width (maxWidth / MIN_TEXT_XSCALE). + final CharSequence ellipsized = TextUtils.ellipsize( + text, paint, maxWidth / MIN_TEXT_XSCALE, TextUtils.TruncateAt.MIDDLE); + paint.setTextScaleX(MIN_TEXT_XSCALE); + return ellipsized; } - private static int getTextWidth(CharSequence text, TextPaint paint, float scaleX) { + private static int getTextWidth(CharSequence text, TextPaint paint) { if (TextUtils.isEmpty(text)) return 0; + final Typeface savedTypeface = paint.getTypeface(); + paint.setTypeface(getTextTypeface(text)); final int len = text.length(); final float[] widths = new float[len]; - paint.setTextScaleX(scaleX); final int count = paint.getTextWidths(text, 0, len, widths); - float width = 0; + int width = 0; for (int i = 0; i < count; i++) { - width += widths[i]; + width += Math.round(widths[i] + 0.5f); } - return (int)Math.round(width + 0.5); + paint.setTypeface(savedTypeface); + return width; } - private static CharSequence getTextEllipsizedAtStart(CharSequence text, TextPaint paint, - int maxWidth) { - final int len = text.length(); - final float[] widths = new float[len]; - final int count = paint.getTextWidths(text, 0, len, widths); - float width = 0; - for (int i = count - 1; i >= 0; i--) { - width += widths[i]; - if (width > maxWidth) - return text.subSequence(i + 1, len); + private static Typeface getTextTypeface(CharSequence text) { + if (!(text instanceof SpannableString)) + return Typeface.DEFAULT; + + final SpannableString ss = (SpannableString)text; + final StyleSpan[] styles = ss.getSpans(0, text.length(), StyleSpan.class); + if (styles.length == 0) + return Typeface.DEFAULT; + + switch (styles[0].getStyle()) { + case Typeface.BOLD: return Typeface.DEFAULT_BOLD; + // TODO: BOLD_ITALIC, ITALIC case? + default: return Typeface.DEFAULT; } - return text; } private void expandCandidatesPane() { - mExpandCandidatesPane.setVisibility(View.GONE); - mCloseCandidatesPane.setVisibility(View.VISIBLE); + mExpandCandidatesPane.setVisibility(GONE); + mCloseCandidatesPane.setVisibility(VISIBLE); mCandidatesPaneContainer.setMinimumHeight(mKeyboardView.getMeasuredHeight()); - mCandidatesPaneContainer.setVisibility(View.VISIBLE); - mKeyboardView.setVisibility(View.GONE); + mCandidatesPaneContainer.setVisibility(VISIBLE); + mKeyboardView.setVisibility(GONE); } private void closeCandidatesPane() { - mExpandCandidatesPane.setVisibility(View.VISIBLE); - mCloseCandidatesPane.setVisibility(View.GONE); - mCandidatesPaneContainer.setVisibility(View.GONE); - mKeyboardView.setVisibility(View.VISIBLE); + mExpandCandidatesPane.setVisibility(VISIBLE); + mCloseCandidatesPane.setVisibility(GONE); + mCandidatesPaneContainer.setVisibility(GONE); + mKeyboardView.setVisibility(VISIBLE); } public void onAutoCorrectionInverted(CharSequence autoCorrectedWord) { @@ -526,8 +682,9 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo public void showAddToDictionaryHint(CharSequence word) { mWordToSave.setText(word); mShowingAddToDictionary = true; - mCandidatesStrip.setVisibility(View.GONE); - mTouchToSave.setVisibility(View.VISIBLE); + mCandidatesStrip.setVisibility(GONE); + mCandidatesPaneControl.setVisibility(GONE); + mTouchToSave.setVisibility(VISIBLE); } public boolean dismissAddToDictionaryHint() { @@ -543,12 +700,9 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo public void clear() { mShowingAddToDictionary = false; mShowingAutoCorrectionInverted = false; - for (int i = 0; i < NUM_CANDIDATES_IN_STRIP; i++) { - mWords.get(i).setText(null); - mInfos.get(i).setVisibility(View.GONE); - } - mTouchToSave.setVisibility(View.GONE); - mCandidatesStrip.setVisibility(View.VISIBLE); + mTouchToSave.setVisibility(GONE); + mCandidatesStrip.setVisibility(VISIBLE); + mCandidatesStrip.removeAllViews(); mCandidatesPane.removeAllViews(); } |