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Diffstat (limited to 'src/com/android/inputmethod/latin/LatinKeyboard.java')
-rw-r--r--src/com/android/inputmethod/latin/LatinKeyboard.java762
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diff --git a/src/com/android/inputmethod/latin/LatinKeyboard.java b/src/com/android/inputmethod/latin/LatinKeyboard.java
deleted file mode 100644
index 58e1dc767..000000000
--- a/src/com/android/inputmethod/latin/LatinKeyboard.java
+++ /dev/null
@@ -1,762 +0,0 @@
-/*
- * Copyright (C) 2008-2009 Google Inc.
- *
- * 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;
-
-import java.util.List;
-import java.util.Locale;
-
-import android.content.Context;
-import android.content.res.Resources;
-import android.content.res.TypedArray;
-import android.content.res.XmlResourceParser;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.ColorFilter;
-import android.graphics.Paint;
-import android.graphics.PixelFormat;
-import android.graphics.PorterDuff;
-import android.graphics.Rect;
-import android.graphics.Paint.Align;
-import android.graphics.drawable.BitmapDrawable;
-import android.graphics.drawable.Drawable;
-import android.inputmethodservice.Keyboard;
-import android.text.TextPaint;
-import android.util.Log;
-import android.view.ViewConfiguration;
-import android.view.inputmethod.EditorInfo;
-
-public class LatinKeyboard extends Keyboard {
-
- private static final boolean DEBUG_PREFERRED_LETTER = false;
- private static final String TAG = "LatinKeyboard";
-
- private Drawable mShiftLockIcon;
- private Drawable mShiftLockPreviewIcon;
- private Drawable mOldShiftIcon;
- private Drawable mOldShiftPreviewIcon;
- private Drawable mSpaceIcon;
- private Drawable mSpacePreviewIcon;
- private Drawable mMicIcon;
- private Drawable mMicPreviewIcon;
- private Drawable m123MicIcon;
- private Drawable m123MicPreviewIcon;
- private Drawable mButtonArrowLeftIcon;
- private Drawable mButtonArrowRightIcon;
- private Key mShiftKey;
- private Key mEnterKey;
- private Key mF1Key;
- private Key mSpaceKey;
- private Key m123Key;
- private int mSpaceKeyIndex = -1;
- private int mSpaceDragStartX;
- private int mSpaceDragLastDiff;
- /* package */ Locale mLocale;
- private LanguageSwitcher mLanguageSwitcher;
- private Resources mRes;
- private Context mContext;
- private int mMode;
- // Whether this keyboard has voice icon on it
- private boolean mHasVoiceButton;
- // Whether voice icon is enabled at all
- private boolean mVoiceEnabled;
- private boolean mIsAlphaKeyboard;
- private CharSequence m123Label;
- private boolean mCurrentlyInSpace;
- private SlidingLocaleDrawable mSlidingLocaleIcon;
- private Rect mBounds = new Rect();
- private int[] mPrefLetterFrequencies;
- private boolean mPreemptiveCorrection;
- private int mPrefLetter;
- private int mPrefLetterX;
- private int mPrefLetterY;
- private int mPrefDistance;
-
- private int mExtensionResId;
-
- private static final int SHIFT_OFF = 0;
- private static final int SHIFT_ON = 1;
- private static final int SHIFT_LOCKED = 2;
-
- private int mShiftState = SHIFT_OFF;
-
- private static final float SPACEBAR_DRAG_THRESHOLD = 0.8f;
- private static final float OVERLAP_PERCENTAGE_LOW_PROB = 0.70f;
- private static final float OVERLAP_PERCENTAGE_HIGH_PROB = 0.85f;
-
- static int sSpacebarVerticalCorrection;
-
- public LatinKeyboard(Context context, int xmlLayoutResId) {
- this(context, xmlLayoutResId, 0);
- }
-
- public LatinKeyboard(Context context, int xmlLayoutResId, int mode) {
- super(context, xmlLayoutResId, mode);
- final Resources res = context.getResources();
- mContext = context;
- mMode = mode;
- mRes = res;
- mShiftLockIcon = res.getDrawable(R.drawable.sym_keyboard_shift_locked);
- mShiftLockPreviewIcon = res.getDrawable(R.drawable.sym_keyboard_feedback_shift_locked);
- mShiftLockPreviewIcon.setBounds(0, 0,
- mShiftLockPreviewIcon.getIntrinsicWidth(),
- mShiftLockPreviewIcon.getIntrinsicHeight());
- mSpaceIcon = res.getDrawable(R.drawable.sym_keyboard_space);
- mSpacePreviewIcon = res.getDrawable(R.drawable.sym_keyboard_feedback_space);
- mMicIcon = res.getDrawable(R.drawable.sym_keyboard_mic);
- mMicPreviewIcon = res.getDrawable(R.drawable.sym_keyboard_feedback_mic);
- setDefaultBounds(mMicPreviewIcon);
- mButtonArrowLeftIcon = res.getDrawable(R.drawable.sym_keyboard_language_arrows_left);
- mButtonArrowRightIcon = res.getDrawable(R.drawable.sym_keyboard_language_arrows_right);
- m123MicIcon = res.getDrawable(R.drawable.sym_keyboard_123_mic);
- m123MicPreviewIcon = res.getDrawable(R.drawable.sym_keyboard_feedback_123_mic);
- setDefaultBounds(m123MicPreviewIcon);
- sSpacebarVerticalCorrection = res.getDimensionPixelOffset(
- R.dimen.spacebar_vertical_correction);
- mIsAlphaKeyboard = xmlLayoutResId == R.xml.kbd_qwerty;
- mSpaceKeyIndex = indexOf((int) ' ');
- }
-
- public LatinKeyboard(Context context, int layoutTemplateResId,
- CharSequence characters, int columns, int horizontalPadding) {
- super(context, layoutTemplateResId, characters, columns, horizontalPadding);
- }
-
- @Override
- protected Key createKeyFromXml(Resources res, Row parent, int x, int y,
- XmlResourceParser parser) {
- Key key = new LatinKey(res, parent, x, y, parser);
- switch (key.codes[0]) {
- case 10:
- mEnterKey = key;
- break;
- case LatinKeyboardView.KEYCODE_F1:
- mF1Key = key;
- break;
- case 32:
- mSpaceKey = key;
- break;
- case KEYCODE_MODE_CHANGE:
- m123Key = key;
- m123Label = key.label;
- break;
- }
- return key;
- }
-
- void setImeOptions(Resources res, int mode, int options) {
- if (mEnterKey != null) {
- // Reset some of the rarely used attributes.
- mEnterKey.popupCharacters = null;
- mEnterKey.popupResId = 0;
- mEnterKey.text = null;
- switch (options&(EditorInfo.IME_MASK_ACTION|EditorInfo.IME_FLAG_NO_ENTER_ACTION)) {
- case EditorInfo.IME_ACTION_GO:
- mEnterKey.iconPreview = null;
- mEnterKey.icon = null;
- mEnterKey.label = res.getText(R.string.label_go_key);
- break;
- case EditorInfo.IME_ACTION_NEXT:
- mEnterKey.iconPreview = null;
- mEnterKey.icon = null;
- mEnterKey.label = res.getText(R.string.label_next_key);
- break;
- case EditorInfo.IME_ACTION_DONE:
- mEnterKey.iconPreview = null;
- mEnterKey.icon = null;
- mEnterKey.label = res.getText(R.string.label_done_key);
- break;
- case EditorInfo.IME_ACTION_SEARCH:
- mEnterKey.iconPreview = res.getDrawable(
- R.drawable.sym_keyboard_feedback_search);
- mEnterKey.icon = res.getDrawable(
- R.drawable.sym_keyboard_search);
- mEnterKey.label = null;
- break;
- case EditorInfo.IME_ACTION_SEND:
- mEnterKey.iconPreview = null;
- mEnterKey.icon = null;
- mEnterKey.label = res.getText(R.string.label_send_key);
- break;
- default:
- if (mode == KeyboardSwitcher.MODE_IM) {
- mEnterKey.icon = null;
- mEnterKey.iconPreview = null;
- mEnterKey.label = ":-)";
- mEnterKey.text = ":-) ";
- mEnterKey.popupResId = R.xml.popup_smileys;
- } else {
- mEnterKey.iconPreview = res.getDrawable(
- R.drawable.sym_keyboard_feedback_return);
- mEnterKey.icon = res.getDrawable(
- R.drawable.sym_keyboard_return);
- mEnterKey.label = null;
- }
- break;
- }
- // Set the initial size of the preview icon
- if (mEnterKey.iconPreview != null) {
- mEnterKey.iconPreview.setBounds(0, 0,
- mEnterKey.iconPreview.getIntrinsicWidth(),
- mEnterKey.iconPreview.getIntrinsicHeight());
- }
- }
- }
-
- void enableShiftLock() {
- int index = getShiftKeyIndex();
- if (index >= 0) {
- mShiftKey = getKeys().get(index);
- if (mShiftKey instanceof LatinKey) {
- ((LatinKey)mShiftKey).enableShiftLock();
- }
- mOldShiftIcon = mShiftKey.icon;
- mOldShiftPreviewIcon = mShiftKey.iconPreview;
- }
- }
-
- void setShiftLocked(boolean shiftLocked) {
- if (mShiftKey != null) {
- if (shiftLocked) {
- mShiftKey.on = true;
- mShiftKey.icon = mShiftLockIcon;
- mShiftState = SHIFT_LOCKED;
- } else {
- mShiftKey.on = false;
- mShiftKey.icon = mShiftLockIcon;
- mShiftState = SHIFT_ON;
- }
- }
- }
-
- boolean isShiftLocked() {
- return mShiftState == SHIFT_LOCKED;
- }
-
- @Override
- public boolean setShifted(boolean shiftState) {
- boolean shiftChanged = false;
- if (mShiftKey != null) {
- if (shiftState == false) {
- shiftChanged = mShiftState != SHIFT_OFF;
- mShiftState = SHIFT_OFF;
- mShiftKey.on = false;
- mShiftKey.icon = mOldShiftIcon;
- } else {
- if (mShiftState == SHIFT_OFF) {
- shiftChanged = mShiftState == SHIFT_OFF;
- mShiftState = SHIFT_ON;
- mShiftKey.icon = mShiftLockIcon;
- }
- }
- } else {
- return super.setShifted(shiftState);
- }
- return shiftChanged;
- }
-
- @Override
- public boolean isShifted() {
- if (mShiftKey != null) {
- return mShiftState != SHIFT_OFF;
- } else {
- return super.isShifted();
- }
- }
-
- public void setExtension(int resId) {
- mExtensionResId = resId;
- }
-
- public int getExtension() {
- return mExtensionResId;
- }
-
- private void setDefaultBounds(Drawable drawable) {
- drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
- }
-
- public void setVoiceMode(boolean hasVoiceButton, boolean hasVoice) {
- mHasVoiceButton = hasVoiceButton;
- mVoiceEnabled = hasVoice;
- updateF1Key();
- }
-
- private void updateF1Key() {
- if (mF1Key == null) return;
- if (m123Key != null && mIsAlphaKeyboard) {
- if (mVoiceEnabled && !mHasVoiceButton) {
- m123Key.icon = m123MicIcon;
- m123Key.iconPreview = m123MicPreviewIcon;
- m123Key.label = null;
- } else {
- m123Key.icon = null;
- m123Key.iconPreview = null;
- m123Key.label = m123Label;
- }
- }
-
- if (mHasVoiceButton && mVoiceEnabled) {
- mF1Key.codes = new int[] { LatinKeyboardView.KEYCODE_VOICE };
- mF1Key.label = null;
- mF1Key.icon = mMicIcon;
- mF1Key.iconPreview = mMicPreviewIcon;
- } else {
- mF1Key.label = ",";
- mF1Key.codes = new int[] { ',' };
- mF1Key.icon = null;
- mF1Key.iconPreview = null;
- }
- }
-
- private void updateSpaceBarForLocale() {
- if (mLocale != null) {
- // Create the graphic for spacebar
- Bitmap buffer = Bitmap.createBitmap(mSpaceKey.width, mSpaceIcon.getIntrinsicHeight(),
- Bitmap.Config.ARGB_8888);
- Canvas canvas = new Canvas(buffer);
- drawSpaceBar(canvas, buffer.getWidth(), buffer.getHeight(), 255);
- mSpaceKey.icon = new BitmapDrawable(mRes, buffer);
- mSpaceKey.repeatable = mLanguageSwitcher.getLocaleCount() < 2;
- } else {
- mSpaceKey.icon = mRes.getDrawable(R.drawable.sym_keyboard_space);
- mSpaceKey.repeatable = true;
- }
- }
-
- private void drawSpaceBar(Canvas canvas, int width, int height, int opacity) {
- canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
- Paint paint = new Paint();
- paint.setAntiAlias(true);
- paint.setAlpha(opacity);
- // Get the text size from the theme
- paint.setTextSize(getTextSizeFromTheme(android.R.style.TextAppearance_Small, 14));
- paint.setTextAlign(Align.CENTER);
- //// Draw a drop shadow for the text
- //paint.setShadowLayer(2f, 0, 0, 0xFF000000);
- final String language = getInputLanguage(mSpaceKey.width, paint);
- final int ascent = (int) -paint.ascent();
- paint.setColor(0x80000000);
- canvas.drawText(language,
- width / 2, ascent - 1, paint);
- paint.setColor(0xFF808080);
- canvas.drawText(language,
- width / 2, ascent, paint);
- // Put arrows on either side of the text
- if (mLanguageSwitcher.getLocaleCount() > 1) {
- Rect bounds = new Rect();
- paint.getTextBounds(language, 0, language.length(), bounds);
- drawButtonArrow(mButtonArrowLeftIcon, canvas,
- (mSpaceKey.width - bounds.right) / 2
- - mButtonArrowLeftIcon.getIntrinsicWidth(),
- (int) paint.getTextSize());
- drawButtonArrow(mButtonArrowRightIcon, canvas,
- (mSpaceKey.width + bounds.right) / 2, (int) paint.getTextSize());
- }
- // Draw the spacebar icon at the bottom
- int x = (width - mSpaceIcon.getIntrinsicWidth()) / 2;
- int y = height - mSpaceIcon.getIntrinsicHeight();
- mSpaceIcon.setBounds(x, y,
- x + mSpaceIcon.getIntrinsicWidth(), y + mSpaceIcon.getIntrinsicHeight());
- mSpaceIcon.draw(canvas);
- }
-
- private void drawButtonArrow(Drawable arrow, Canvas canvas, int x, int bottomY) {
- arrow.setBounds(x, bottomY - arrow.getIntrinsicHeight(), x + arrow.getIntrinsicWidth(),
- bottomY);
- arrow.draw(canvas);
- }
-
- private String getInputLanguage(int widthAvail, Paint paint) {
- return chooseDisplayName(mLanguageSwitcher.getInputLocale(), widthAvail, paint);
- }
-
- private String getNextInputLanguage(int widthAvail, Paint paint) {
- return chooseDisplayName(mLanguageSwitcher.getNextInputLocale(), widthAvail, paint);
- }
-
- private String getPrevInputLanguage(int widthAvail, Paint paint) {
- return chooseDisplayName(mLanguageSwitcher.getPrevInputLocale(), widthAvail, paint);
- }
-
- private String chooseDisplayName(Locale locale, int widthAvail, Paint paint) {
- if (widthAvail < (int) (.35 * getMinWidth())) {
- return LanguageSwitcher.toTitleCase(locale.getLanguage().substring(0, 2));
- } else {
- return LanguageSwitcher.toTitleCase(locale.getDisplayLanguage(locale));
- }
- }
-
- private void updateLocaleDrag(int diff) {
- if (mSlidingLocaleIcon == null) {
- mSlidingLocaleIcon = new SlidingLocaleDrawable(mSpacePreviewIcon, mSpaceKey.width,
- mSpacePreviewIcon.getIntrinsicHeight());
- mSlidingLocaleIcon.setBounds(0, 0, mSpaceKey.width,
- mSpacePreviewIcon.getIntrinsicHeight());
- mSpaceKey.iconPreview = mSlidingLocaleIcon;
- }
- mSlidingLocaleIcon.setDiff(diff);
- if (Math.abs(diff) == Integer.MAX_VALUE) {
- mSpaceKey.iconPreview = mSpacePreviewIcon;
- } else {
- mSpaceKey.iconPreview = mSlidingLocaleIcon;
- }
- mSpaceKey.iconPreview.invalidateSelf();
- }
-
- public int getLanguageChangeDirection() {
- if (mSpaceKey == null || mLanguageSwitcher.getLocaleCount() < 2
- || Math.abs(mSpaceDragLastDiff) < mSpaceKey.width * SPACEBAR_DRAG_THRESHOLD ) {
- return 0; // No change
- }
- return mSpaceDragLastDiff > 0 ? 1 : -1;
- }
-
- public void setLanguageSwitcher(LanguageSwitcher switcher) {
- mLanguageSwitcher = switcher;
- Locale locale = mLanguageSwitcher.getLocaleCount() > 0
- ? mLanguageSwitcher.getInputLocale()
- : null;
- if (mLocale != null && mLocale.equals(locale)) return;
- mLocale = locale;
- updateSpaceBarForLocale();
- }
-
- boolean isCurrentlyInSpace() {
- return mCurrentlyInSpace;
- }
-
- void setPreferredLetters(int[] frequencies) {
- mPrefLetterFrequencies = frequencies;
- mPrefLetter = 0;
- }
-
- void keyReleased() {
- mCurrentlyInSpace = false;
- mSpaceDragLastDiff = 0;
- mPrefLetter = 0;
- mPrefLetterX = 0;
- mPrefLetterY = 0;
- mPrefDistance = Integer.MAX_VALUE;
- if (mSpaceKey != null) {
- updateLocaleDrag(Integer.MAX_VALUE);
- }
- }
-
- /**
- * Does the magic of locking the touch gesture into the spacebar when
- * switching input languages.
- */
- boolean isInside(LatinKey key, int x, int y) {
- final int code = key.codes[0];
- if (code == KEYCODE_SHIFT ||
- code == KEYCODE_DELETE) {
- y -= key.height / 10;
- if (code == KEYCODE_SHIFT) x += key.width / 6;
- if (code == KEYCODE_DELETE) x -= key.width / 6;
- } else if (code == LatinIME.KEYCODE_SPACE) {
- y += LatinKeyboard.sSpacebarVerticalCorrection;
- if (mLanguageSwitcher.getLocaleCount() > 1) {
- if (mCurrentlyInSpace) {
- int diff = x - mSpaceDragStartX;
- if (Math.abs(diff - mSpaceDragLastDiff) > 0) {
- updateLocaleDrag(diff);
- }
- mSpaceDragLastDiff = diff;
- return true;
- } else {
- boolean insideSpace = key.isInsideSuper(x, y);
- if (insideSpace) {
- mCurrentlyInSpace = true;
- mSpaceDragStartX = x;
- updateLocaleDrag(0);
- }
- return insideSpace;
- }
- }
- } else if (mPrefLetterFrequencies != null) {
- // New coordinate? Reset
- if (mPrefLetterX != x || mPrefLetterY != y) {
- mPrefLetter = 0;
- mPrefDistance = Integer.MAX_VALUE;
- }
- // Handle preferred next letter
- final int[] pref = mPrefLetterFrequencies;
- if (mPrefLetter > 0) {
- if (DEBUG_PREFERRED_LETTER && mPrefLetter == code
- && !key.isInsideSuper(x, y)) {
- Log.d(TAG, "CORRECTED !!!!!!");
- }
- return mPrefLetter == code;
- } else {
- final boolean inside = key.isInsideSuper(x, y);
- int[] nearby = getNearestKeys(x, y);
- List<Key> nearbyKeys = getKeys();
- if (inside) {
- // If it's a preferred letter
- if (inPrefList(code, pref)) {
- // Check if its frequency is much lower than a nearby key
- mPrefLetter = code;
- mPrefLetterX = x;
- mPrefLetterY = y;
- for (int i = 0; i < nearby.length; i++) {
- Key k = nearbyKeys.get(nearby[i]);
- if (k != key && inPrefList(k.codes[0], pref)) {
- final int dist = distanceFrom(k, x, y);
- if (dist < (int) (k.width * OVERLAP_PERCENTAGE_LOW_PROB) &&
- (pref[k.codes[0]] > pref[mPrefLetter] * 3)) {
- mPrefLetter = k.codes[0];
- mPrefDistance = dist;
- if (DEBUG_PREFERRED_LETTER) {
- Log.d(TAG, "CORRECTED ALTHOUGH PREFERRED !!!!!!");
- }
- break;
- }
- }
- }
-
- return mPrefLetter == code;
- }
- }
-
- // Get the surrounding keys and intersect with the preferred list
- // For all in the intersection
- // if distance from touch point is within a reasonable distance
- // make this the pref letter
- // If no pref letter
- // return inside;
- // else return thiskey == prefletter;
-
- for (int i = 0; i < nearby.length; i++) {
- Key k = nearbyKeys.get(nearby[i]);
- if (inPrefList(k.codes[0], pref)) {
- final int dist = distanceFrom(k, x, y);
- if (dist < (int) (k.width * OVERLAP_PERCENTAGE_HIGH_PROB)
- && dist < mPrefDistance) {
- mPrefLetter = k.codes[0];
- mPrefLetterX = x;
- mPrefLetterY = y;
- mPrefDistance = dist;
- }
- }
- }
- // Didn't find any
- if (mPrefLetter == 0) {
- return inside;
- } else {
- return mPrefLetter == code;
- }
- }
- }
-
- // Lock into the spacebar
- if (mCurrentlyInSpace) return false;
-
- return key.isInsideSuper(x, y);
- }
-
- private boolean inPrefList(int code, int[] pref) {
- if (code < pref.length && code >= 0) return pref[code] > 0;
- return false;
- }
-
- private int distanceFrom(Key k, int x, int y) {
- if (y > k.y && y < k.y + k.height) {
- return Math.abs(k.x + k.width / 2 - x);
- } else {
- return Integer.MAX_VALUE;
- }
- }
-
- @Override
- public int[] getNearestKeys(int x, int y) {
- if (mCurrentlyInSpace) {
- return new int[] { mSpaceKeyIndex };
- } else {
- return super.getNearestKeys(x, y);
- }
- }
-
- private int indexOf(int code) {
- List<Key> keys = getKeys();
- int count = keys.size();
- for (int i = 0; i < count; i++) {
- if (keys.get(i).codes[0] == code) return i;
- }
- return -1;
- }
-
- private int getTextSizeFromTheme(int style, int defValue) {
- TypedArray array = mContext.getTheme().obtainStyledAttributes(
- style, new int[] { android.R.attr.textSize });
- int textSize = array.getDimensionPixelSize(array.getResourceId(0, 0), defValue);
- return textSize;
- }
-
- class LatinKey extends Keyboard.Key {
-
- private boolean mShiftLockEnabled;
-
- public LatinKey(Resources res, Keyboard.Row parent, int x, int y,
- XmlResourceParser parser) {
- super(res, parent, x, y, parser);
- if (popupCharacters != null && popupCharacters.length() == 0) {
- // If there is a keyboard with no keys specified in popupCharacters
- popupResId = 0;
- }
- }
-
- void enableShiftLock() {
- mShiftLockEnabled = true;
- }
-
- @Override
- public void onReleased(boolean inside) {
- if (!mShiftLockEnabled) {
- super.onReleased(inside);
- } else {
- pressed = !pressed;
- }
- }
-
- /**
- * Overriding this method so that we can reduce the target area for certain keys.
- */
- @Override
- public boolean isInside(int x, int y) {
- boolean result = LatinKeyboard.this.isInside(this, x, y);
- return result;
- }
-
- boolean isInsideSuper(int x, int y) {
- return super.isInside(x, y);
- }
- }
-
- /**
- * Animation to be displayed on the spacebar preview popup when switching
- * languages by swiping the spacebar. It draws the current, previous and
- * next languages and moves them by the delta of touch movement on the spacebar.
- */
- class SlidingLocaleDrawable extends Drawable {
-
- private int mWidth;
- private int mHeight;
- private Drawable mBackground;
- private int mDiff;
- private TextPaint mTextPaint;
- private int mMiddleX;
- private int mAscent;
- private Drawable mLeftDrawable;
- private Drawable mRightDrawable;
- private boolean mHitThreshold;
- private int mThreshold;
- private String mCurrentLanguage;
- private String mNextLanguage;
- private String mPrevLanguage;
-
- public SlidingLocaleDrawable(Drawable background, int width, int height) {
- mBackground = background;
- mBackground.setBounds(0, 0,
- mBackground.getIntrinsicWidth(), mBackground.getIntrinsicHeight());
- mWidth = width;
- mHeight = height;
- mTextPaint = new TextPaint();
- int textSize = getTextSizeFromTheme(android.R.style.TextAppearance_Medium, 18);
- mTextPaint.setTextSize(textSize);
- mTextPaint.setColor(0);
- mTextPaint.setTextAlign(Align.CENTER);
- mTextPaint.setAlpha(255);
- mTextPaint.setAntiAlias(true);
- mAscent = (int) mTextPaint.ascent();
- mMiddleX = (mWidth - mBackground.getIntrinsicWidth()) / 2;
- mLeftDrawable =
- mRes.getDrawable(R.drawable.sym_keyboard_feedback_language_arrows_left);
- mRightDrawable =
- mRes.getDrawable(R.drawable.sym_keyboard_feedback_language_arrows_right);
- mLeftDrawable.setBounds(0, 0,
- mLeftDrawable.getIntrinsicWidth(), mLeftDrawable.getIntrinsicHeight());
- mRightDrawable.setBounds(mWidth - mRightDrawable.getIntrinsicWidth(), 0,
- mWidth, mRightDrawable.getIntrinsicHeight());
- mThreshold = ViewConfiguration.get(mContext).getScaledTouchSlop();
- }
-
- void setDiff(int diff) {
- if (diff == Integer.MAX_VALUE) {
- mHitThreshold = false;
- mCurrentLanguage = null;
- return;
- }
- mDiff = diff;
- if (mDiff > mWidth) mDiff = mWidth;
- if (mDiff < -mWidth) mDiff = -mWidth;
- if (Math.abs(mDiff) > mThreshold) mHitThreshold = true;
- invalidateSelf();
- }
-
- @Override
- public void draw(Canvas canvas) {
- canvas.save();
- if (mHitThreshold) {
- mTextPaint.setColor(0xFF000000);
- canvas.clipRect(0, 0, mWidth, mHeight);
- if (mCurrentLanguage == null) {
- mCurrentLanguage = getInputLanguage(mWidth, mTextPaint);
- mNextLanguage = getNextInputLanguage(mWidth, mTextPaint);
- mPrevLanguage = getPrevInputLanguage(mWidth, mTextPaint);
- }
- canvas.drawText(mCurrentLanguage,
- mWidth / 2 + mDiff, -mAscent + 4, mTextPaint);
- canvas.drawText(mNextLanguage,
- mDiff - mWidth / 2, -mAscent + 4, mTextPaint);
- canvas.drawText(mPrevLanguage,
- mDiff + mWidth + mWidth / 2, -mAscent + 4, mTextPaint);
- mLeftDrawable.draw(canvas);
- mRightDrawable.draw(canvas);
- }
- if (mBackground != null) {
- canvas.translate(mMiddleX, 0);
- mBackground.draw(canvas);
- }
- canvas.restore();
- }
-
- @Override
- public int getOpacity() {
- return PixelFormat.TRANSLUCENT;
- }
-
- @Override
- public void setAlpha(int alpha) {
- // Ignore
- }
-
- @Override
- public void setColorFilter(ColorFilter cf) {
- // Ignore
- }
-
- @Override
- public int getIntrinsicWidth() {
- return mWidth;
- }
-
- @Override
- public int getIntrinsicHeight() {
- return mHeight;
- }
- }
-}
generated by cgit v1.2.3-83-g751a (git 2.47.1) at 2025-06-03 13:02:48 +0000