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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 Keyboard2 _ime;
private KeyboardData _keyboard;
private KeyValue _downValue;
private float _verticalMargin;
private float _horizontalMargin;
private float _keyWidth;
private float _keyHeight;
private float _keyPadding;
private float _keyBgPadding;
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();
_downValue = null;
_verticalMargin = getResources().getDimension(R.dimen.vertical_margin);
_horizontalMargin = getResources().getDimension(R.dimen.horizontal_margin);
_keyHeight = getResources().getDimension(R.dimen.key_height);
_keyPadding = getResources().getDimension(R.dimen.key_padding);
_keyBgPadding = getResources().getDimension(R.dimen.key_bg_padding);
_keyWidth = (dm.widthPixels - (_horizontalMargin * 2)) / KEY_PER_ROW;
_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(getResources().getDimension(R.dimen.label_text_size));
_keyLabelPaint.setTextAlign(Paint.Align.CENTER);
_keySubLabelPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
_keySubLabelPaint.setColor(getResources().getColor(R.color.key_sub_label));
_keySubLabelPaint.setTextSize(getResources().getDimension(R.dimen.sublabel_text_size));
_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;
if (v != null)
_downValue = v;
}
}
}
}
}
private void onTouchDown(float touchX, float touchY, int pointerId)
{
float x;
float y;
float keyW;
y = _verticalMargin - _keyHeight;
for (KeyboardData.Row row : _keyboard.getRows())
{
y += _keyHeight;
if (touchY < y || touchY >= (y + _keyHeight))
continue ;
x = (KEY_PER_ROW * _keyWidth - row.getWidth(_keyWidth)) / 2 + _horizontalMargin;
for (KeyboardData.Key k : row)
{
keyW = _keyWidth * k.width;
if (touchX >= x && touchX < (x + keyW) && k.downPointer == -1)
{
if (k.key0 != null)
_downValue = k.key0;
k.downPointer = pointerId;
k.downValue = k.key0;
k.downX = touchX;
k.downY = touchY;
invalidate();
return ;
}
x += keyW;
}
}
}
private void onTouchUp(int pointerId)
{
for (KeyboardData.Row row : _keyboard.getRows())
{
for (KeyboardData.Key k : row)
{
if (k.downPointer == pointerId)
{
if (k.downValue != null)
_ime.handleKey(k.downValue);
_downValue = null;
k.downPointer = -1;
nextDownValue();
invalidate();
return ;
}
}
}
}
private void nextDownValue()
{
for (keyboardData.Row row : _keyboard.getRows())
{
for (KeyboardData.Key k : row)
{
if (k.downPointer != -1)
{
_downValue = k.downValue;
return ;
}
}
}
}
@Override
public void onMeasure(int wSpec, int hSpec)
{
int height;
if (_keyboard.getRows() == null)
height = 0;
else
height = (int)(_keyHeight * ((float)_keyboard.getRows().size())
+ (_verticalMargin * 2));
setMeasuredDimension(MeasureSpec.getSize(wSpec), height);
}
@Override
protected void onDraw(Canvas canvas)
{
float x;
float y;
y = _verticalMargin;
for (KeyboardData.Row row : _keyboard.getRows())
{
x = (KEY_PER_ROW * _keyWidth - row.getWidth(_keyWidth)) / 2 + _horizontalMargin;
for (KeyboardData.Key k : row)
{
float keyW = _keyWidth * k.width;
if (k.downPointer != -1)
canvas.drawRect(x + _keyBgPadding, y + _keyBgPadding,
x + keyW - _keyBgPadding, y + _keyHeight - _keyBgPadding, _keyDownBgPaint);
else
canvas.drawRect(x + _keyBgPadding, y + _keyBgPadding,
x + keyW - _keyBgPadding, y + _keyHeight - _keyBgPadding, _keyBgPaint);
if (k.key0 != null)
canvas.drawText(k.key0.getSymbol(), keyW / 2 + x,
(_keyHeight + _keyLabelPaint.getTextSize()) / 2 + y, _keyLabelPaint);
float textOffsetY = _keySubLabelPaint.getTextSize() / 2;
float subPadding = _keyPadding + _keyBgPadding;
if (k.key1 != null)
canvas.drawText(k.key1.getSymbol(), x + subPadding,
y + subPadding + textOffsetY, _keySubLabelPaint);
if (k.key2 != null)
canvas.drawText(k.key2.getSymbol(), x + keyW - subPadding,
y + subPadding + textOffsetY, _keySubLabelPaint);
textOffsetY /= 2; // lol
if (k.key3 != null)
canvas.drawText(k.key3.getSymbol(), x + subPadding,
y + _keyHeight - subPadding + textOffsetY, _keySubLabelPaint);
if (k.key4 != null)
canvas.drawText(k.key4.getSymbol(), x + keyW - subPadding,
y + _keyHeight - subPadding + textOffsetY, _keySubLabelPaint);
x += keyW;
}
y += _keyHeight;
}
}
}
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