Chauffeurs Name Board Version 4.0

package au.id.rupert.chauffeurs_name_board;

//Version 15
//Based on code from
//http://catchthecows.com/?p=72
//See also https://github.com/catchthecows/BigTextButton
//https://github.com/catchthecows/BigTextButton.git
//http://stackoverflow.com/questions/13800009/hide-android-status-bar-for-my-application-on-android-4-0-4

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.widget.ImageButton;
import android.widget.Toast;

public class BigTextButton extends ImageButton {
String mText = "";
Paint mTextPaint;

int mViewWidth;
int mViewHeight;
int mTextBaseline;

public BigTextButton(Context context) {
super(context);
init();
this.setBackgroundColor(Color.BLACK);

}

public BigTextButton(Context context, AttributeSet attrs) {
super(context, attrs);
parseAttrs(attrs);
init();
this.setBackgroundColor(Color.BLACK);

}

public BigTextButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
parseAttrs(attrs);
init();
this.setBackgroundColor(Color.BLACK);

}

/**
* Dig out Attributes to find text setting
*
* This could be expanded to pull out settings for textColor, etc if desired
*
* @param attrs
*/

private void parseAttrs(AttributeSet attrs) {
for (int i = 0; i < attrs.getAttributeCount(); i++) {
String s = attrs.getAttributeName(i);
if (s.equalsIgnoreCase("text")) {
mText = attrs.getAttributeValue(i);
}
}
}

public void setText(CharSequence text) {
mText = text.toString();
onSizeChanged(getWidth(), getHeight(), getWidth(), getHeight());
}

/**
* initialize Paint for text, it will be modified when the view size is set
*/
private void init() {
mTextPaint = new TextPaint();
mTextPaint.setTextAlign(Paint.Align.CENTER);
mTextPaint.setAntiAlias(true);
mTextPaint.setTypeface(Typeface.SERIF);
// Set text colour to White
mTextPaint.setColor(0xFFFFFFFF);
}

/**
* set the scale of the text Paint objects so that the text will draw and
* take up the full screen width
*/
void adjustTextScale() {
// do calculation with scale of 1.0 (no scale)
mTextPaint.setTextScaleX(1.0f);
Rect bounds = new Rect();
// ask the paint for the bounding rect if it were to draw this
// text.
mTextPaint.getTextBounds(mText, 0, mText.length(), bounds);

// determine the width
int w = bounds.right - bounds.left;

// calculate the baseline to use so that the
// entire text is visible including the descenders
int text_h = bounds.bottom - bounds.top;
mTextBaseline = bounds.bottom + ((mViewHeight - text_h) / 2);

// determine how much to scale the width to fit the view
float xscale = ((float) (mViewWidth - getPaddingLeft() - getPaddingRight())) / w;

// set the scale for the text paint
mTextPaint.setTextScaleX(xscale);
}

/**
* determine the proper text size to use to fill the full height
*/
void adjustTextSize() {
if (mText.isEmpty()) {
return;
}
mTextPaint.setTextSize(100);
mTextPaint.setTextScaleX(1.0f);
Rect bounds = new Rect();
// ask the paint for the bounding rect if it were to draw this
// text
mTextPaint.getTextBounds(mText, 0, mText.length(), bounds);

// get the height that would have been produced
int h = bounds.bottom - bounds.top;

// make the text text up 70% of the height
float target = (float) mViewHeight * .7f;

// figure out what textSize setting would create that height
// of text
float size = ((target / h) * 100f);

// and set it into the paint
mTextPaint.setTextSize(size);
}

/**
* When the view size is changed, recalculate the paint settings to have the
* text on the fill the view area
*/
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);

// save view size
mViewWidth = w;
mViewHeight = h;

// first determine font point size
adjustTextSize();
// then determine width scaling
// this is done in two steps in case the
// point size change affects the width boundary
adjustTextScale();
}

@Override
protected void onDraw(Canvas canvas) {
// let the ImageButton paint background as normal
super.onDraw(canvas);

// draw the text
// position is centered on width
// and the baseline is calculated to be positioned from the
// view bottom
canvas.drawText(mText, mViewWidth / 2, mViewHeight - mTextBaseline,
mTextPaint);

}

public void update() {
// TODO Auto-generated method stub

// Redraws the screen with the new text
invalidate();
}
}