forked from extern/Unexpected-Keyboard
4127aa6f03
There was no free bits left to add new modifiers. Instead of increasing the width of the 'flags' field, refactor the way modifiers are represented and used. Modifers are now represented as independent values and stored in the 'code' field. A flag is added to distinguish between modifiers and keys with a key event. The most notable change is that modifiers can no longer be or-ed into a single value but have to be represented as an array.
324 lines
9.4 KiB
Java
324 lines
9.4 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 Pointers.Modifiers _mods;
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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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_mods = Pointers.Modifiers.EMPTY;
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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, Pointers.Modifiers mods)
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{
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return KeyModifier.modify(k, mods);
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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, Pointers.Modifiers mods)
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{
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_config.handler.handleKeyUp(k, mods);
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invalidate();
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}
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public void onPointerHold(KeyValue k, Pointers.Modifiers mods)
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{
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_config.handler.handleKeyUp(k, mods);
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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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_mods = _pointers.getModifiers();
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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.modify(k, _mods);
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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.modify(k, _mods);
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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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