/**
* Copyright (c) 2010, Gaudenz Alder, David Benson
*/
package com.mxgraph.shape;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.util.Map;
import javax.swing.CellRendererPane;
import com.mxgraph.canvas.mxGraphics2DCanvas;
import com.mxgraph.util.mxConstants;
import com.mxgraph.util.mxLightweightLabel;
import com.mxgraph.util.mxUtils;
import com.mxgraph.view.mxCellState;
/**
* To set global CSS for all HTML labels, use the following code:
*
* <pre>
* mxGraphics2DCanvas.putTextShape(mxGraphics2DCanvas.TEXT_SHAPE_HTML,
* new mxHtmlTextShape()
* {
* protected String createHtmlDocument(Map<String, Object> style, String text)
* {
* return mxUtils.createHtmlDocument(style, text, 1, 0,
* "<style type=\"text/css\">.selectRef { " +
* "font-size:9px;font-weight:normal; }</style>");
* }
* }
* );
* </pre>
*/
public class mxHtmlTextShape implements mxITextShape
{
/**
* Specifies if linefeeds should be replaced with breaks in HTML markup.
* Default is true.
*/
protected boolean replaceHtmlLinefeeds = true;
/**
* Returns replaceHtmlLinefeeds
*/
public boolean isReplaceHtmlLinefeeds()
{
return replaceHtmlLinefeeds;
}
/**
* Returns replaceHtmlLinefeeds
*/
public void setReplaceHtmlLinefeeds(boolean value)
{
replaceHtmlLinefeeds = value;
}
/**
*
*/
protected String createHtmlDocument(Map<String, Object> style, String text,
int w, int h)
{
String overflow = mxUtils.getString(style, mxConstants.STYLE_OVERFLOW, "");
if (overflow.equals("fill"))
{
return mxUtils.createHtmlDocument(style, text, 1, w, null, "height:" + h + "pt;");
}
else if (overflow.equals("width"))
{
return mxUtils.createHtmlDocument(style, text, 1, w);
}
else
{
return mxUtils.createHtmlDocument(style, text);
}
}
/**
*
*/
public void paintShape(mxGraphics2DCanvas canvas, String text,
mxCellState state, Map<String, Object> style)
{
mxLightweightLabel textRenderer = mxLightweightLabel
.getSharedInstance();
CellRendererPane rendererPane = canvas.getRendererPane();
Rectangle rect = state.getLabelBounds().getRectangle();
Graphics2D g = canvas.getGraphics();
if (textRenderer != null
&& rendererPane != null
&& (g.getClipBounds() == null || g.getClipBounds().intersects(
rect)))
{
double scale = canvas.getScale();
int x = rect.x;
int y = rect.y;
int w = rect.width;
int h = rect.height;
if (!mxUtils.isTrue(style, mxConstants.STYLE_HORIZONTAL, true))
{
g.rotate(-Math.PI / 2, x + w / 2, y + h / 2);
g.translate(w / 2 - h / 2, h / 2 - w / 2);
int tmp = w;
w = h;
h = tmp;
}
// Replaces the linefeeds with BR tags
if (isReplaceHtmlLinefeeds())
{
text = text.replaceAll("\n", "<br>");
}
// Renders the scaled text
textRenderer.setText(createHtmlDocument(style, text,
(int) Math.round(w / state.getView().getScale()),
(int) Math.round(h / state.getView().getScale())));
textRenderer.setFont(mxUtils.getFont(style, canvas.getScale()));
g.scale(scale, scale);
rendererPane.paintComponent(g, textRenderer, rendererPane,
(int) (x / scale) + mxConstants.LABEL_INSET,
(int) (y / scale) + mxConstants.LABEL_INSET,
(int) (w / scale), (int) (h / scale), true);
}
}
}