/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.css2.widget;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.FigureUtilities;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.jst.pagedesigner.css2.ICSSStyle;
import org.eclipse.jst.pagedesigner.css2.font.ICSSFont;
import org.eclipse.jst.pagedesigner.css2.layout.TextLayoutSupport;
import org.eclipse.jst.pagedesigner.css2.property.ICSSPropertyID;
import org.eclipse.jst.pagedesigner.css2.provider.DimensionInfo;
import org.eclipse.jst.pagedesigner.css2.style.DefaultStyle;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;
/**
* @author mengbo
* @version 1.5
*/
public class TextAreaWidgetProvider extends AbstractWidgetProvider {
private static final int DEFAULTCOLUMN = 20;
private static final int DEFAULTROWS = 2;
private static final int VERTICAL_PADDING = 2;
private static final int HORIZONTAL_PADDING = 2;
private static int ARRAWWIDTH = 16;
private static int ARROWHEIGHT = 16;
private int _columns = DEFAULTCOLUMN;
private int _rows = DEFAULTROWS;
private String _value;
/**
* @param style
*/
public TextAreaWidgetProvider(ICSSStyle style) {
super(style);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.css2.provider.ICSSWidgetProvider#getPreferredDimension(int,
* int)
*/
public DimensionInfo getPreferredDimension(int width, int height) {
if (width <= 0) {
width = getDefaultWidth();
}
if (height <= 0) {
height = getDefaultHeight();
}
return new DimensionInfo(width, height, -1);
}
/**
* @return
*/
private int getDefaultHeight() {
ICSSStyle style = this.getCSSStyle();
if (style == null) {
style = DefaultStyle.getInstance();
}
ICSSFont font = style.getCSSFont();
Font swtfont = font.getSwtFont();
int fontHeight = FigureUtilities.getFontMetrics(swtfont).getHeight();
return (fontHeight) * _rows + VERTICAL_PADDING;
}
/**
* @return
*/
private int getDefaultWidth() {
ICSSStyle style = this.getCSSStyle();
if (style == null) {
style = DefaultStyle.getInstance();
}
ICSSFont font = style.getCSSFont();
int fontWidth = FigureUtilities.getFontMetrics(font.getSwtFont())
.getAverageCharWidth();
return _columns * fontWidth + ARRAWWIDTH + HORIZONTAL_PADDING;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.css2.provider.ICSSWidgetProvider#paintFigure(org.eclipse.draw2d.Graphics,
* org.eclipse.draw2d.geometry.Rectangle)
*/
public void paintFigure(Graphics g, Rectangle rect) {
if (_value != null) {
g.clipRect(rect);
ICSSStyle style = this.getCSSStyle();
if (style == null) {
style = DefaultStyle.getInstance();
}
int decoration = ((Integer) style
.getStyleProperty(ICSSPropertyID.ATTR_TEXTDECORATION))
.intValue();
ICSSFont font = style.getCSSFont();
g.setFont(font.getSwtFont());
Color newColor = null;
Object color = style.getColor();
if (color instanceof Color) {
g.setForegroundColor((Color) color);
} else if (color instanceof RGB) {
newColor = new Color(Display.getCurrent(), (RGB) color);
g.setForegroundColor(newColor);
} else {
g.setForegroundColor(ColorConstants.black);
}
Object textAlign = style
.getStyleProperty(ICSSPropertyID.ATTR_TEXTALIGN);
int begin = 0;
int end = 0;
int fontHeight = FigureUtilities.getFontMetrics(font.getSwtFont())
.getHeight();
int fontWidth = FigureUtilities.getFontMetrics(font.getSwtFont())
.getAverageCharWidth();
int columns = (rect.width - HORIZONTAL_PADDING) / fontWidth;
int i = 0;
while (true) {
int y = rect.y + VERTICAL_PADDING / 2 + fontHeight * i;
if (y >= rect.bottom()) {
break;
}
end += columns;
if (end > _value.length()) {
end = _value.length();
}
end = getTextCount(begin, end, g.getFont(), rect.width
- ARRAWWIDTH);
String text = _value.substring(begin, end);
int width = FigureUtilities.getTextWidth(text, g.getFont());
int x = TextLayoutSupport.getBeginX(textAlign, rect, width);
g.drawString(text, x, y);
TextLayoutSupport.paintTextDecoration(g, new Rectangle(x, y,
width, fontHeight), decoration);
begin = end;
if (end == _value.length()) {
break;
}
i++;
}
if (newColor != null) {
newColor.dispose();
}
}
int borderThick = 2;
BorderUtil
.drawVertialBar(g, ARRAWWIDTH, ARROWHEIGHT, borderThick, rect);
}
private int getTextCount(int begin, int end, Font swtFont, int textWidth) {
while (FigureUtilities.getTextWidth(_value.substring(begin, end),
swtFont) > textWidth) {
end--;
}
return end;
}
/**
* @param columns
*/
public void setColumns(int columns) {
this._columns = (columns > 0 ? columns : DEFAULTCOLUMN);
}
/**
* @param rows
*/
public void setRows(int rows) {
this._rows = (rows > 0 ? rows : DEFAULTROWS);
}
/**
* @param value
*/
public void setValue(String value) {
this._value = value;
}
}