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package juloo.keyboard2;
import android.content.Context;
import android.content.res.XmlResourceParser;
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;
import java.util.ArrayList;
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 = 6;
private static final float KEY_HEIGHT_DPI = 40;
private static final float KEY_LABEL_DPI = 16;
private static final float KEY_SUBLABEL_DPI = 12;
private ArrayList<Row> _rows;
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);
_rows = null;
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();
_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();
_keySubLabelPaint.setColor(getResources().getColor(R.color.key_label));
_keySubLabelPaint.setTextSize(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, KEY_SUBLABEL_DPI, dm));
_keySubLabelPaint.setTextAlign(Paint.Align.CENTER);
setOnTouchListener(this);
}
public void loadKeyboard(int res)
{
XmlResourceParser parser = getContext().getResources().getXml(res);
ArrayList<Row> rows = new ArrayList<Row>();
try
{
int status;
while (parser.next() != XmlResourceParser.START_TAG)
continue ;
if (!parser.getName().equals("keyboard"))
throw new Exception("Unknow tag: " + parser.getName());
while ((status = parser.next()) != XmlResourceParser.END_DOCUMENT)
{
if (status == XmlResourceParser.START_TAG)
{
String tag = parser.getName();
if (tag.equals("row"))
rows.add(new Row(parser, _keyWidth, _keyMargin));
else
throw new Exception("Unknow keyboard tag: " + tag);
}
}
_rows = rows;
}
catch (Exception e)
{
e.printStackTrace();
}
}
@Override
public boolean onTouch(View v, MotionEvent event)
{
float x;
float y;
float keyW;
boolean key_down;
int pointer_up;
if (event.getAction() == MotionEvent.ACTION_UP || event.getAction() == MotionEvent.ACTION_POINTER_UP)
pointer_up = event.getActionIndex();
else
pointer_up = -1;
y = _keyMargin;
for (Row row : _rows)
{
x = (KEY_PER_ROW * (_keyMargin + _keyWidth) - _keyMargin - row.getWidth()) / 2 + _keyMargin;
for (Key k : row)
{
key_down = k.down;
keyW = _keyWidth * k.width;
for (int p = 0; p < event.getPointerCount(); p++)
{
if (pointer_up != p && event.getX(p) >= x && event.getX(p) < (x + keyW)
&& event.getY(p) >= y && event.getY(p) < (y + _keyHeight))
{
if (!k.down && !key_down)
{
if (k.key0 != null)
Keyboard2.log("Key down " + k.key0.getName());
key_down = true;
invalidate();
}
}
else if (k.down && key_down)
{
if (k.key0 != null)
Keyboard2.log("Key up " + k.key0.getName());
key_down = false;
invalidate();
}
}
k.down = key_down;
x += keyW + _keyMargin;
}
y += _keyHeight + _keyMargin;
}
return (true);
}
@Override
public void onMeasure(int wSpec, int hSpec)
{
int height;
if (_rows == null)
height = 0;
else
height = (int)((_keyHeight + _keyMargin) * (float)_rows.size() + _keyMargin);
setMeasuredDimension(MeasureSpec.getSize(wSpec), height);
}
@Override
protected void onDraw(Canvas canvas)
{
float x;
float y;
if (_rows == null)
return ;
y = _keyMargin;
for (Row row : _rows)
{
x = (KEY_PER_ROW * (_keyMargin + _keyWidth) - _keyMargin - row.getWidth()) / 2 + _keyMargin;
for (Key k : row)
{
float keyW = _keyWidth * k.width;
if (k.down)
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);
if (k.key1 != null)
canvas.drawText(new char[]{k.key1.getChar()}, 0, 1,
x + _keyPadding, y + _keyPadding, _keySubLabelPaint);
if (k.key2 != null)
canvas.drawText(new char[]{k.key2.getChar()}, 0, 1,
x + keyW - _keyPadding, y + _keyPadding, _keySubLabelPaint);
if (k.key3 != null)
canvas.drawText(new char[]{k.key3.getChar()}, 0, 1,
x + _keyPadding, y + _keyHeight - _keyPadding, _keySubLabelPaint);
if (k.key4 != null)
canvas.drawText(new char[]{k.key4.getChar()}, 0, 1,
x + keyW - _keyPadding, y + _keyHeight - _keyPadding, _keySubLabelPaint);
x += keyW + _keyMargin;
}
y += _keyHeight + _keyMargin;
}
}
private class Row extends ArrayList<Key>
{
private float _width;
public Row(XmlResourceParser parser, float keyWidth, float keyMargin) throws Exception
{
super();
int status;
_width = 0;
while ((status = parser.next()) != XmlResourceParser.END_TAG)
{
if (status == XmlResourceParser.START_TAG)
{
String tag = parser.getName();
if (tag.equals("key"))
{
Key k = new Key(parser);
if (_width != 0f)
_width += keyMargin;
_width += keyWidth * k.width;
add(k);
}
else
throw new Exception("Unknow row tag: " + tag);
}
}
}
public float getWidth()
{
return (_width);
}
}
private class Key
{
public KeyValue key0;
public KeyValue key1;
public KeyValue key2;
public KeyValue key3;
public KeyValue key4;
public float width;
public boolean down;
public Key(XmlResourceParser parser) throws Exception
{
down = false;
key0 = KeyValue.getKeyByName(parser.getAttributeValue(null, "key0"));
key1 = KeyValue.getKeyByName(parser.getAttributeValue(null, "key1"));
key2 = KeyValue.getKeyByName(parser.getAttributeValue(null, "key2"));
key3 = KeyValue.getKeyByName(parser.getAttributeValue(null, "key3"));
key4 = KeyValue.getKeyByName(parser.getAttributeValue(null, "key4"));
try
{
width = parser.getAttributeFloatValue(null, "width", 1f);
}
catch (Exception e)
{
width = 1f;
}
while (parser.next() != XmlResourceParser.END_TAG)
continue ;
}
}
}
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