<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" type="topic" id="diagram" xml:lang="zh-CN">
  <info>
    <title type="sort">1</title>
  </info>
  <title>Diagrams</title>
  <p>
    Diagrams are present throughout the <app>gda-browser</app>, and are made of a canvas on which
    graphical items are displayed (like tables for example).
  </p>
  <figure>
    <title>Diagram</title>
    <desc>Diagram showing some tables and their relations represented by foreign key constraints (also see 
    <link xref="declared-fk">the declared foreign keys</link>)</desc>
    <media type="image" mime="image/png" src="figures/diagram.png"/>
  </figure>
  <p>
    The items can be moved around on the canvas (note that as long as the whole diagram fits in the
    canvas, it remains centered on it). Other manipulations are possible:
  </p>
  <list>
    <item><p>zooming in and out using the mouse's wheel, or through the contextual menu (right
	click on the canvas); a zoom to fit the canvas is also available in the contextual menu</p></item>
    <item><p>bring closer or moving away items from one another using the mouse's wheel while holding the
    <key>Shift</key> key</p></item>
    <item><p>arranging items linearly or radially, through the contextual menu</p></item>
    <item><p>printing, through the contextual menu</p></item>
    <item><p>exporting as PNG or SVG images, through the contextual menu</p></item>
    <item><p>adding items, through the contextual menu</p></item>
    <item><p>removing items, through the items's contextual menu</p></item>
  </list>
</page>
