mirror of
https://github.com/Julow/Unexpected-Keyboard.git
synced 2024-11-22 23:33:11 +01:00
350 lines
9.6 KiB
Java
350 lines
9.6 KiB
Java
package juloo.keyboard2;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.RectF;
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import android.graphics.Paint;
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import android.util.AttributeSet;
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import android.util.DisplayMetrics;
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import android.os.Vibrator;
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import android.view.MotionEvent;
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import android.view.View;
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import java.util.LinkedList;
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public class Keyboard2View extends View
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implements View.OnTouchListener
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{
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private static final float KEY_PER_ROW = 10;
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private static final float SUB_VALUE_DIST = 7f;
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private static final long VIBRATE_LONG = 25;
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private static final long VIBRATE_MIN_INTERVAL = 100;
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private static final long LONGPRESS_TIMEOUT = 800;
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private static final long LONGPRESS_INTERVAL = 90;
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private Keyboard2 _ime;
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private KeyboardData _keyboard;
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private LinkedList<KeyDown> _downKeys = new LinkedList<KeyDown>();
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private int _flags = 0;
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private Vibrator _vibratorService;
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private long _lastVibration = 0;
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private float _verticalMargin;
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private float _horizontalMargin;
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private float _keyWidth;
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private float _keyHeight;
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private float _keyPadding;
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private float _keyBgPadding;
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private float _keyRound;
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private Paint _keyBgPaint = new Paint();
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private Paint _keyDownBgPaint = new Paint();
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private Paint _keyLabelPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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private Paint _keyLabelLockedPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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private Paint _keySubLabelPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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public Keyboard2View(Context context, AttributeSet attrs)
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{
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super(context, attrs);
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_vibratorService = (Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE);
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_verticalMargin = getResources().getDimension(R.dimen.vertical_margin);
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_horizontalMargin = getResources().getDimension(R.dimen.horizontal_margin);
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_keyHeight = getResources().getDimension(R.dimen.key_height);
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_keyPadding = getResources().getDimension(R.dimen.key_padding);
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_keyBgPadding = getResources().getDimension(R.dimen.key_bg_padding);
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_keyRound = getResources().getDimension(R.dimen.key_round);
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_keyBgPaint.setColor(getResources().getColor(R.color.key_bg));
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_keyDownBgPaint.setColor(getResources().getColor(R.color.key_down_bg));
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_keyLabelPaint.setColor(getResources().getColor(R.color.key_label));
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_keyLabelPaint.setTextSize(getResources().getDimension(R.dimen.label_text_size));
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_keyLabelPaint.setTextAlign(Paint.Align.CENTER);
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_keyLabelLockedPaint.setColor(getResources().getColor(R.color.key_label_locked));
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_keyLabelLockedPaint.setTextSize(getResources().getDimension(R.dimen.label_text_size));
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_keyLabelLockedPaint.setTextAlign(Paint.Align.CENTER);
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_keySubLabelPaint.setColor(getResources().getColor(R.color.key_sub_label));
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_keySubLabelPaint.setTextSize(getResources().getDimension(R.dimen.sublabel_text_size));
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setOnTouchListener(this);
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}
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public void setKeyboard(Keyboard2 ime, KeyboardData keyboardData)
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{
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_ime = ime;
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_keyboard = keyboardData;
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}
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@Override
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public boolean onTouch(View v, MotionEvent event)
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{
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float x;
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float y;
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float keyW;
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int p;
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switch (event.getActionMasked())
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{
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case MotionEvent.ACTION_UP:
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case MotionEvent.ACTION_POINTER_UP:
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onTouchUp(event.getPointerId(event.getActionIndex()));
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break ;
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case MotionEvent.ACTION_DOWN:
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case MotionEvent.ACTION_POINTER_DOWN:
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p = event.getActionIndex();
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onTouchDown(event.getX(p), event.getY(p), event.getPointerId(p));
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break ;
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case MotionEvent.ACTION_MOVE:
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for (p = 0; p < event.getPointerCount(); p++)
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onTouchMove(event.getX(p), event.getY(p), event.getPointerId(p));
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break ;
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default:
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return (false);
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}
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return (true);
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}
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private KeyDown getKeyDown(int pointerId)
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{
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for (KeyDown k : _downKeys)
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{
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if (k.pointerId == pointerId)
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return (k);
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}
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return (null);
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}
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private KeyDown getKeyDown(KeyboardData.Key key)
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{
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for (KeyDown k : _downKeys)
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{
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if (k.key == key)
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return (k);
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}
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return (null);
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}
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private void onTouchMove(float moveX, float moveY, int pointerId)
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{
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KeyDown key = getKeyDown(pointerId);
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KeyValue newValue;
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if (key != null)
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{
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moveX -= key.downX;
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moveY -= key.downY;
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if ((Math.abs(moveX) + Math.abs(moveY)) < SUB_VALUE_DIST)
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newValue = key.key.key0;
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else if (moveX < 0)
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newValue = (moveY < 0) ? key.key.key1 : key.key.key3;
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else if (moveY < 0)
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newValue = key.key.key2;
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else
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newValue = key.key.key4;
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if (newValue != null && newValue != key.value)
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{
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key.setValue(newValue);
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updateFlags();
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vibrate();
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}
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else if (key.value != null && (key.flags & KeyValue.FLAG_NOCHAR) == 0)
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{
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long now = System.currentTimeMillis();
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if (now >= key.nextPress)
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{
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key.nextPress = now + LONGPRESS_INTERVAL;
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_ime.handleKeyUp(key.value, _flags);
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vibrate();
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}
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}
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}
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}
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private void onTouchDown(float touchX, float touchY, int pointerId)
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{
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float x;
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float y;
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float keyW;
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y = _verticalMargin - _keyHeight;
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for (KeyboardData.Row row : _keyboard.getRows())
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{
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y += _keyHeight;
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if (touchY < y || touchY >= (y + _keyHeight))
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continue ;
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x = (KEY_PER_ROW * _keyWidth - row.getWidth(_keyWidth)) / 2 + _horizontalMargin;
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for (KeyboardData.Key key : row)
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{
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keyW = _keyWidth * key.width;
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if (touchX >= x && touchX < (x + keyW))
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{
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KeyDown down = getKeyDown(key);
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if (down != null)
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{
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if ((down.flags & KeyValue.FLAG_LOCK) != 0)
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{
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down.flags ^= KeyValue.FLAG_LOCK;
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down.flags |= KeyValue.FLAG_LOCKED;
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}
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else if (down.pointerId == -1)
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down.pointerId = pointerId;
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}
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else
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_downKeys.add(new KeyDown(pointerId, key, touchX, touchY));
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vibrate();
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updateFlags();
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invalidate();
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return ;
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}
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x += keyW;
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}
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}
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}
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private void onTouchUp(int pointerId)
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{
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KeyDown k = getKeyDown(pointerId);
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if (k != null)
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{
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if ((k.flags & KeyValue.FLAG_KEEP_ON) != 0)
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{
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k.flags ^= KeyValue.FLAG_KEEP_ON;
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k.pointerId = -1;
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return ;
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}
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for (int i = 0; i < _downKeys.size(); i++)
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{
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KeyDown downKey = _downKeys.get(i);
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if (downKey.pointerId == -1 && (downKey.flags & KeyValue.FLAG_LOCKED) == 0)
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_downKeys.remove(i--);
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else if ((downKey.flags & KeyValue.FLAG_KEEP_ON) != 0)
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downKey.flags ^= KeyValue.FLAG_KEEP_ON;
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}
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if (k.value != null && (k.flags & (KeyValue.FLAG_LOCKED | KeyValue.FLAG_NOCHAR)) == 0)
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_ime.handleKeyUp(k.value, _flags);
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_downKeys.remove(k);
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updateFlags();
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invalidate();
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return ;
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}
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}
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private void updateFlags()
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{
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_flags = 0;
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for (KeyDown k : _downKeys)
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_flags |= k.flags;
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}
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private void vibrate()
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{
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long now = System.currentTimeMillis();
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if ((now - _lastVibration) > VIBRATE_MIN_INTERVAL)
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{
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_lastVibration = now;
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try
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{
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_vibratorService.vibrate(VIBRATE_LONG);
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}
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catch (Exception e)
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{
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e.printStackTrace();
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}
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}
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}
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@Override
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public void onMeasure(int wSpec, int hSpec)
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{
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DisplayMetrics dm = getContext().getResources().getDisplayMetrics();
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int height;
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if (_keyboard.getRows() == null)
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height = 0;
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else
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height = (int)(_keyHeight * ((float)_keyboard.getRows().size())
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+ (_verticalMargin * 2));
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setMeasuredDimension(dm.widthPixels, height);
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_keyWidth = (getWidth() - (_horizontalMargin * 2)) / KEY_PER_ROW;
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}
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@Override
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protected void onDraw(Canvas canvas)
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{
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float x;
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float y;
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boolean upperCase = ((_flags & KeyValue.FLAG_SHIFT) != 0);
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y = _verticalMargin;
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for (KeyboardData.Row row : _keyboard.getRows())
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{
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x = (KEY_PER_ROW * _keyWidth - row.getWidth(_keyWidth)) / 2f + _horizontalMargin;
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for (KeyboardData.Key k : row)
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{
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float keyW = _keyWidth * k.width;
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KeyDown keyDown = getKeyDown(k);
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if (keyDown != null)
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canvas.drawRect(x + _keyBgPadding, y + _keyBgPadding,
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x + keyW - _keyBgPadding, y + _keyHeight - _keyBgPadding, _keyDownBgPaint);
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else
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canvas.drawRoundRect(new RectF(x + _keyBgPadding, y + _keyBgPadding,
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x + keyW - _keyBgPadding, y + _keyHeight - _keyBgPadding), _keyRound, _keyRound, _keyBgPaint);
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if (k.key0 != null)
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canvas.drawText(k.key0.getSymbol(upperCase), keyW / 2f + x,
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(_keyHeight + _keyLabelPaint.getTextSize()) / 2f + y,
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(keyDown != null && (keyDown.flags & KeyValue.FLAG_LOCKED) != 0)
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? _keyLabelLockedPaint : _keyLabelPaint);
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float subPadding = _keyBgPadding + _keyPadding;
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_keySubLabelPaint.setTextAlign(Paint.Align.LEFT);
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if (k.key1 != null)
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canvas.drawText(k.key1.getSymbol(upperCase), x + subPadding,
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y + subPadding - _keySubLabelPaint.ascent(), _keySubLabelPaint);
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if (k.key3 != null)
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canvas.drawText(k.key3.getSymbol(upperCase), x + subPadding,
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y + _keyHeight - subPadding - _keySubLabelPaint.descent(), _keySubLabelPaint);
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_keySubLabelPaint.setTextAlign(Paint.Align.RIGHT);
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if (k.key2 != null)
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canvas.drawText(k.key2.getSymbol(upperCase), x + keyW - subPadding,
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y + subPadding - _keySubLabelPaint.ascent(), _keySubLabelPaint);
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if (k.key4 != null)
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canvas.drawText(k.key4.getSymbol(upperCase), x + keyW - subPadding,
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y + _keyHeight - subPadding - _keySubLabelPaint.descent(), _keySubLabelPaint);
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x += keyW;
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}
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y += _keyHeight;
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}
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}
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private class KeyDown
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{
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public int pointerId;
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public KeyValue value;
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public KeyboardData.Key key;
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public float downX;
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public float downY;
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public int flags;
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public long nextPress;
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public KeyDown(int pointerId, KeyboardData.Key key, float x, float y)
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{
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this.pointerId = pointerId;
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this.key = key;
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downX = x;
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downY = y;
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setValue(key.key0);
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}
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public void setValue(KeyValue v)
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{
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value = v;
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flags = (value == null) ? 0 : v.getFlags();
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nextPress = System.currentTimeMillis() + LONGPRESS_TIMEOUT;
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}
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}
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}
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