forked from extern/Unexpected-Keyboard
324 lines
9.3 KiB
Java
324 lines
9.3 KiB
Java
package juloo.keyboard2;
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import android.content.Context;
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import android.content.ContextWrapper;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.RectF;
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import android.inputmethodservice.InputMethodService;
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import android.os.Build.VERSION;
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import android.os.Vibrator;
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import android.util.AttributeSet;
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import android.util.DisplayMetrics;
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import android.view.KeyEvent;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.Window;
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public class Keyboard2View extends View
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implements View.OnTouchListener, Pointers.IPointerEventHandler
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{
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private static final long VIBRATE_MIN_INTERVAL = 100;
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private KeyboardData _keyboard;
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private Pointers _pointers;
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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 static int _currentWhat = 0;
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private Config _config;
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private float _keyWidth;
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private Theme _theme;
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private static RectF _tmpRect = new RectF();
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enum Vertical
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{
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TOP,
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CENTER,
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BOTTOM
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}
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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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_theme = new Theme(getContext(), attrs);
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_config = Config.globalConfig();
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_pointers = new Pointers(this, _config);
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refresh_navigation_bar(context);
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setOnTouchListener(this);
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reset();
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}
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private Window getParentWindow(Context context)
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{
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if (context instanceof InputMethodService)
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return ((InputMethodService)context).getWindow().getWindow();
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if (context instanceof ContextWrapper)
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return getParentWindow(((ContextWrapper)context).getBaseContext());
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return null;
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}
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public void refresh_navigation_bar(Context context)
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{
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if (VERSION.SDK_INT < 21)
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return;
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// The intermediate Window is a [Dialog].
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Window w = getParentWindow(context);
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int uiFlags = getSystemUiVisibility();
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if (_theme.isLightNavBar)
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uiFlags |= View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
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else
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uiFlags &= ~View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
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w.setNavigationBarColor(_theme.colorNavBar);
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setSystemUiVisibility(uiFlags);
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}
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public void setKeyboard(KeyboardData kw)
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{
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_keyboard = _config.modify_layout(kw);
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reset();
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}
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public void reset()
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{
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_flags = 0;
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_pointers.clear();
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requestLayout();
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invalidate();
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}
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public KeyValue modifyKey(KeyValue k, int flags)
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{
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return KeyModifier.handleFlags(k, flags);
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}
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public void onPointerDown(boolean isSwipe)
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{
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invalidate();
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vibrate();
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}
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public void onPointerUp(KeyValue k, int flags)
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{
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_config.handler.handleKeyUp(k, flags);
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invalidate();
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}
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public void onPointerHold(KeyValue k, int flags)
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{
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_config.handler.handleKeyUp(k, flags);
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}
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public void onPointerFlagsChanged()
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{
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invalidate();
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}
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private void updateFlags()
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{
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_flags = _pointers.getFlags();
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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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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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_pointers.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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float tx = event.getX(p);
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float ty = event.getY(p);
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KeyboardData.Key key = getKeyAtPosition(tx, ty);
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if (key != null)
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_pointers.onTouchDown(tx, ty, event.getPointerId(p), key);
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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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_pointers.onTouchMove(event.getX(p), event.getY(p), event.getPointerId(p));
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break;
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case MotionEvent.ACTION_CANCEL:
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_pointers.onTouchCancel(event.getPointerId(event.getActionIndex()));
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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 KeyboardData.Row getRowAtPosition(float ty)
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{
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float y = _config.marginTop;
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if (ty < y)
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return null;
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for (KeyboardData.Row row : _keyboard.rows)
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{
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y += (row.shift + row.height) * _config.keyHeight;
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if (ty < y)
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return row;
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}
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return null;
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}
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private KeyboardData.Key getKeyAtPosition(float tx, float ty)
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{
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KeyboardData.Row row = getRowAtPosition(ty);
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float x = _config.horizontalMargin;
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if (row == null || tx < x)
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return null;
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for (KeyboardData.Key key : row.keys)
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{
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x += (key.shift + key.width) * _keyWidth;
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if (tx < x)
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return key;
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}
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return null;
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}
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private void vibrate()
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{
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if (!_config.vibrateEnabled)
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return ;
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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(_config.vibrateDuration);
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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 width = dm.widthPixels;
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int height =
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(int)(_config.keyHeight * _keyboard.keysHeight
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+ _keyboard.rows.size()
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+ _config.marginTop + _config.marginBottom);
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setMeasuredDimension(width, height);
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_keyWidth = (width - (_config.horizontalMargin * 2)) / _keyboard.keysWidth;
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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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updateFlags();
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float y = _config.marginTop + _config.keyVerticalInterval / 2;
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for (KeyboardData.Row row : _keyboard.rows)
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{
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y += row.shift * _config.keyHeight;
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float x = _config.horizontalMargin + _config.keyHorizontalInterval / 2;
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float keyH = row.height * _config.keyHeight - _config.keyVerticalInterval;
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for (KeyboardData.Key k : row.keys)
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{
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x += k.shift * _keyWidth;
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float keyW = _keyWidth * k.width - _config.keyHorizontalInterval;
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boolean isKeyDown = _pointers.isKeyDown(k);
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_tmpRect.set(x, y, x + keyW, y + keyH);
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canvas.drawRoundRect(_tmpRect, _theme.keyBorderRadius, _theme.keyBorderRadius,
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isKeyDown ? _theme.keyDownBgPaint : _theme.keyBgPaint);
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drawLabel(canvas, k.key0, keyW / 2f + x, y, keyH, isKeyDown);
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if (k.edgekeys)
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{
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drawSubLabel(canvas, k.key1, x, y, keyW, keyH, Paint.Align.CENTER, Vertical.TOP, isKeyDown);
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drawSubLabel(canvas, k.key3, x, y, keyW, keyH, Paint.Align.LEFT, Vertical.CENTER, isKeyDown);
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drawSubLabel(canvas, k.key2, x, y, keyW, keyH, Paint.Align.RIGHT, Vertical.CENTER, isKeyDown);
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drawSubLabel(canvas, k.key4, x, y, keyW, keyH, Paint.Align.CENTER, Vertical.BOTTOM, isKeyDown);
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}
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else
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{
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drawSubLabel(canvas, k.key1, x, y, keyW, keyH, Paint.Align.LEFT, Vertical.TOP, isKeyDown);
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drawSubLabel(canvas, k.key3, x, y, keyW, keyH, Paint.Align.LEFT, Vertical.BOTTOM, isKeyDown);
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drawSubLabel(canvas, k.key2, x, y, keyW, keyH, Paint.Align.RIGHT, Vertical.TOP, isKeyDown);
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drawSubLabel(canvas, k.key4, x, y, keyW, keyH, Paint.Align.RIGHT, Vertical.BOTTOM, isKeyDown);
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}
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x += _keyWidth * k.width;
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}
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y += row.height * _config.keyHeight;
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}
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}
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@Override
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public void onDetachedFromWindow()
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{
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super.onDetachedFromWindow();
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}
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private int labelColor(KeyValue k, boolean isKeyDown, int defaultColor)
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{
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if (isKeyDown && (k.flags & KeyValue.FLAG_LATCH) != 0)
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{
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int flags = _pointers.getKeyFlags(k);
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if (flags != -1)
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{
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if ((flags & KeyValue.FLAG_LOCKED) != 0)
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return _theme.lockedColor;
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if ((flags & KeyValue.FLAG_LATCH) == 0)
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return _theme.activatedColor;
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}
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}
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return defaultColor;
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}
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private void drawLabel(Canvas canvas, KeyValue k, float x, float y, float keyH, boolean isKeyDown)
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{
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k = KeyModifier.handleFlags(k, _flags);
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if (k == null)
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return;
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float textSize = scaleTextSize(k, _config.labelTextSize, keyH);
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Paint p = _theme.labelPaint(((k.flags & KeyValue.FLAG_KEY_FONT) != 0));
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p.setColor(labelColor(k, isKeyDown, _theme.labelColor));
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p.setTextSize(textSize);
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canvas.drawText(k.symbol, x, (keyH - p.ascent() - p.descent()) / 2f + y, p);
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}
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private void drawSubLabel(Canvas canvas, KeyValue k, float x, float y, float keyW, float keyH, Paint.Align a, Vertical v, boolean isKeyDown)
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{
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k = KeyModifier.handleFlags(k, _flags);
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if (k == null)
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return;
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float textSize = scaleTextSize(k, _config.sublabelTextSize, keyH);
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Paint p = _theme.subLabelPaint(((k.flags & KeyValue.FLAG_KEY_FONT) != 0), a);
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p.setColor(labelColor(k, isKeyDown, _theme.subLabelColor));
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p.setTextSize(textSize);
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float subPadding = _config.keyPadding;
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if (v == Vertical.CENTER)
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y += (keyH - p.ascent() - p.descent()) / 2f;
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else
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y += (v == Vertical.TOP) ? subPadding - p.ascent() : keyH - subPadding - p.descent();
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if (a == Paint.Align.CENTER)
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x += keyW / 2f;
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else
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x += (a == Paint.Align.LEFT) ? subPadding : keyW - subPadding;
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canvas.drawText(k.symbol, x, y, p);
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}
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private float scaleTextSize(KeyValue k, float rel_size, float keyH)
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{
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float smaller_font = ((k.flags & KeyValue.FLAG_SMALLER_FONT) == 0) ? 1.f : 0.75f;
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return keyH * rel_size * smaller_font * _config.characterSize;
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}
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}
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