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package juloo.keyboard2;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
public class Keyboard2View extends View
implements View.OnTouchListener
{
private static final float KEY_PER_ROW = 10;
private static final float KEY_MARGIN_DPI = 2;
private static final float KEY_PADDING_DPI = 5;
private static final float KEY_HEIGHT_DPI = 40;
private static final float KEY_LABEL_DPI = 16;
private static final float KEY_SUBLABEL_DPI = 10;
private Keyboard2 _ime;
private KeyboardData _keyboard;
private float _keyWidth;
private float _keyHeight;
private float _keyMargin;
private float _keyPadding;
private Paint _keyBgPaint;
private Paint _keyDownBgPaint;
private Paint _keyLabelPaint;
private Paint _keySubLabelPaint;
public Keyboard2View(Context context, AttributeSet attrs)
{
super(context, attrs);
DisplayMetrics dm = context.getResources().getDisplayMetrics();
_keyMargin = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, KEY_MARGIN_DPI, dm);
_keyHeight = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, KEY_HEIGHT_DPI, dm);
_keyPadding = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, KEY_PADDING_DPI, dm);
_keyWidth = (dm.widthPixels - _keyMargin) / KEY_PER_ROW - _keyMargin;
_keyBgPaint = new Paint();
_keyBgPaint.setColor(getResources().getColor(R.color.key_bg));
_keyDownBgPaint = new Paint();
_keyDownBgPaint.setColor(getResources().getColor(R.color.key_down_bg));
_keyLabelPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
_keyLabelPaint.setColor(getResources().getColor(R.color.key_label));
_keyLabelPaint.setTextSize(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, KEY_LABEL_DPI, dm));
_keyLabelPaint.setTextAlign(Paint.Align.CENTER);
_keySubLabelPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
_keySubLabelPaint.setColor(getResources().getColor(R.color.key_sub_label));
_keySubLabelPaint.setTextSize(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, KEY_SUBLABEL_DPI, dm));
_keySubLabelPaint.setTextAlign(Paint.Align.CENTER);
setOnTouchListener(this);
}
public void setKeyboard(Keyboard2 ime, KeyboardData keyboardData)
{
_ime = ime;
_keyboard = keyboardData;
}
@Override
public boolean onTouch(View v, MotionEvent event)
{
float x;
float y;
float keyW;
int p;
switch (event.getActionMasked())
{
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_UP:
onTouchUp(event.getPointerId(event.getActionIndex()));
break ;
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_POINTER_DOWN:
p = event.getActionIndex();
onTouchDown(event.getX(p), event.getY(p), event.getPointerId(p));
break ;
case MotionEvent.ACTION_MOVE:
for (p = 0; p < event.getPointerCount(); p++)
onTouchMove(event.getX(p), event.getY(p), event.getPointerId(p));
break ;
default:
return (false);
}
return (true);
}
private void onTouchMove(float moveX, float moveY, int pointerId)
{
for (KeyboardData.Row row : _keyboard.getRows())
{
for (KeyboardData.Key k : row)
{
if (k.downPointer == pointerId)
{
KeyValue v = k.getDownValue(moveX, moveY);
if (v != k.downValue)
{
k.downValue = v;
Keyboard2.log("Key down " + v.getName());
}
}
}
}
}
private void onTouchDown(float touchX, float touchY, int pointerId)
{
float x;
float y;
float keyW;
y = -_keyHeight;
for (KeyboardData.Row row : _keyboard.getRows())
{
y += _keyHeight + _keyMargin;
if (touchY < y || touchY >= (y + _keyHeight))
continue ;
x = (KEY_PER_ROW * (_keyMargin + _keyWidth) - _keyMargin - row.getWidth(_keyWidth, _keyMargin)) / 2 + _keyMargin;
for (KeyboardData.Key k : row)
{
keyW = _keyWidth * k.width;
if (touchX >= x && touchX < (x + keyW) && k.downPointer == -1)
{
if (k.key0 != null)
Keyboard2.log("Key down " + k.key0.getName());
k.downPointer = pointerId;
k.downValue = k.key0;
k.downX = touchX;
k.downY = touchY;
invalidate();
return ;
}
x += keyW + _keyMargin;
}
}
}
private void onTouchUp(int pointerId)
{
for (KeyboardData.Row row : _keyboard.getRows())
{
for (KeyboardData.Key k : row)
{
if (k.downPointer == pointerId)
{
if (k.downValue != null)
Keyboard2.log("Key up " + k.downValue.getName());
k.downPointer = -1;
invalidate();
}
}
}
}
@Override
public void onMeasure(int wSpec, int hSpec)
{
int height;
if (_keyboard.getRows() == null)
height = 0;
else
height = (int)((_keyHeight + _keyMargin) * ((float)_keyboard.getRows().size()) + _keyMargin);
setMeasuredDimension(MeasureSpec.getSize(wSpec), height);
}
@Override
protected void onDraw(Canvas canvas)
{
float x;
float y;
y = _keyMargin;
for (KeyboardData.Row row : _keyboard.getRows())
{
x = (KEY_PER_ROW * (_keyMargin + _keyWidth) - _keyMargin - row.getWidth(_keyWidth, _keyMargin)) / 2 + _keyMargin;
for (KeyboardData.Key k : row)
{
float keyW = _keyWidth * k.width;
if (k.downPointer != -1)
canvas.drawRect(x, y, x + keyW, y + _keyHeight, _keyDownBgPaint);
else
canvas.drawRect(x, y, x + keyW, y + _keyHeight, _keyBgPaint);
if (k.key0 != null)
canvas.drawText(new char[]{k.key0.getChar()}, 0, 1,
keyW / 2 + x, (_keyHeight + _keyLabelPaint.getTextSize()) / 2 + y, _keyLabelPaint);
float textOffsetY = _keySubLabelPaint.getTextSize() / 2;
if (k.key1 != null)
canvas.drawText(new char[]{k.key1.getChar()}, 0, 1,
x + _keyPadding, y + _keyPadding + textOffsetY, _keySubLabelPaint);
if (k.key2 != null)
canvas.drawText(new char[]{k.key2.getChar()}, 0, 1,
x + keyW - _keyPadding, y + _keyPadding + textOffsetY, _keySubLabelPaint);
textOffsetY /= 2; // WTF it work
if (k.key3 != null)
canvas.drawText(new char[]{k.key3.getChar()}, 0, 1,
x + _keyPadding, y + _keyHeight - _keyPadding + textOffsetY, _keySubLabelPaint);
if (k.key4 != null)
canvas.drawText(new char[]{k.key4.getChar()}, 0, 1,
x + keyW - _keyPadding, y + _keyHeight - _keyPadding + textOffsetY, _keySubLabelPaint);
x += keyW + _keyMargin;
}
y += _keyHeight + _keyMargin;
}
}
}
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