Java tutorial
/* Copyright (c) 2010, Carl Burch. License information is located in the * com.cburch.logisim.Main source code and at www.cburch.com/logisim/. */ package com.cburch.draw.shapes; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.util.Arrays; import java.util.List; import org.apache.commons.collections15.list.UnmodifiableList; import org.w3c.dom.Document; import org.w3c.dom.Element; import com.cburch.draw.model.CanvasObject; import com.cburch.draw.model.AbstractCanvasObject; import com.cburch.draw.model.Handle; import com.cburch.draw.model.HandleGesture; import com.cburch.draw.util.EditableLabel; import com.cburch.logisim.data.Attribute; import com.cburch.logisim.data.AttributeOption; import com.cburch.logisim.data.Bounds; import com.cburch.logisim.data.Location; import static com.cburch.logisim.util.LocaleString.*; public class Text extends AbstractCanvasObject { private EditableLabel label; public Text(int x, int y, String text) { this(x, y, EditableLabel.LEFT, EditableLabel.BASELINE, text, DrawAttr.DEFAULT_FONT, Color.BLACK); } private Text(int x, int y, int halign, int valign, String text, Font font, Color color) { label = new EditableLabel(x, y, text, font); label.setColor(color); label.setHorizontalAlignment(halign); label.setVerticalAlignment(valign); } @Override public Text clone() { Text ret = (Text) super.clone(); ret.label = this.label.clone(); return ret; } @Override public boolean matches(CanvasObject other) { if (other instanceof Text) { Text that = (Text) other; return this.label.equals(that.label); } else { return false; } } @Override public int matchesHashCode() { return label.hashCode(); } @Override public Element toSvgElement(Document doc) { return SvgCreator.createText(doc, this); } public Location getLocation() { return Location.create(label.getX(), label.getY()); } public String getText() { return label.getText(); } public EditableLabel getLabel() { return label; } public void setText(String value) { label.setText(value); } @Override public String getDisplayName() { return _("shapeText"); } @Override public List<Attribute<?>> getAttributes() { return DrawAttr.ATTRS_TEXT; } @Override @SuppressWarnings("unchecked") public <V> V getValue(Attribute<V> attr) { if (attr == DrawAttr.FONT) { return (V) label.getFont(); } else if (attr == DrawAttr.FILL_COLOR) { return (V) label.getColor(); } else if (attr == DrawAttr.ALIGNMENT) { int halign = label.getHorizontalAlignment(); AttributeOption h; if (halign == EditableLabel.LEFT) { h = DrawAttr.ALIGN_LEFT; } else if (halign == EditableLabel.RIGHT) { h = DrawAttr.ALIGN_RIGHT; } else { h = DrawAttr.ALIGN_CENTER; } return (V) h; } else { return null; } } @Override public void updateValue(Attribute<?> attr, Object value) { if (attr == DrawAttr.FONT) { label.setFont((Font) value); } else if (attr == DrawAttr.FILL_COLOR) { label.setColor((Color) value); } else if (attr == DrawAttr.ALIGNMENT) { Integer intVal = (Integer) ((AttributeOption) value).getValue(); label.setHorizontalAlignment(intVal.intValue()); } } @Override public Bounds getBounds() { return label.getBounds(); } @Override public boolean contains(Location loc, boolean assumeFilled) { return label.contains(loc.getX(), loc.getY()); } @Override public void translate(int dx, int dy) { label.setLocation(label.getX() + dx, label.getY() + dy); } public List<Handle> getHandles() { Bounds bds = label.getBounds(); int x = bds.getX(); int y = bds.getY(); int w = bds.getWidth(); int h = bds.getHeight(); return UnmodifiableList.decorate(Arrays.asList(new Handle[] { new Handle(this, x, y), new Handle(this, x + w, y), new Handle(this, x + w, y + h), new Handle(this, x, y + h) })); } @Override public List<Handle> getHandles(HandleGesture gesture) { return getHandles(); } @Override public void paint(Graphics g, HandleGesture gesture) { label.paint(g); } }