212 lines
8.8 KiB
C#
212 lines
8.8 KiB
C#
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#region MigraDoc - Creating Documents on the Fly
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//
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// Authors:
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// Klaus Potzesny
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//
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// Copyright (c) 2001-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.com
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// http://www.migradoc.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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using MigraDoc.DocumentObjectModel;
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using PdfSharp.Drawing;
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using MigraDoc.DocumentObjectModel.Tables;
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using MigraDoc.DocumentObjectModel.Shapes;
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using MigraDoc.DocumentObjectModel.Shapes.Charts;
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namespace MigraDoc.Rendering
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{
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/// <summary>
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/// Abstract base class for all renderers.
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/// </summary>
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public abstract class Renderer
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{
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/// <summary>
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/// Determines the maximum height a single element may have.
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/// </summary>
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public XUnit MaxElementHeight
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{
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get { return _maxElementHeight; }
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set { _maxElementHeight = value; }
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}
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public Renderer(XGraphics gfx, DocumentObject documentObject, FieldInfos fieldInfos)
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{
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_documentObject = documentObject;
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_gfx = gfx;
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_fieldInfos = fieldInfos;
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}
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public Renderer(XGraphics gfx, RenderInfo renderInfo, FieldInfos fieldInfos)
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{
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_documentObject = renderInfo.DocumentObject;
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_gfx = gfx;
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_renderInfo = renderInfo;
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_fieldInfos = fieldInfos;
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}
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/// <summary>
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/// In inherited classes, gets a layout info with only margin and break information set.
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/// It can be taken before the documen object is formatted.
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/// </summary>
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/// <remarks>
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/// In inherited classes, the following parts are set properly:
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/// MarginTop, MarginLeft, MarginRight, MarginBottom,
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/// KeepTogether, KeepWithNext, PagebreakBefore, Floating,
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/// VerticalReference, HorizontalReference.
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/// </remarks>
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public abstract LayoutInfo InitialLayoutInfo { get; }
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/// <summary>
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/// Renders the contents shifted to the given Coordinates.
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/// </summary>
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/// <param name="xShift">The x shift.</param>
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/// <param name="yShift">The y shift.</param>
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/// <param name="renderInfos">The render infos.</param>
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protected void RenderByInfos(XUnit xShift, XUnit yShift, RenderInfo[] renderInfos)
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{
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if (renderInfos == null)
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return;
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foreach (RenderInfo renderInfo in renderInfos)
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{
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XUnit savedX = renderInfo.LayoutInfo.ContentArea.X;
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XUnit savedY = renderInfo.LayoutInfo.ContentArea.Y;
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renderInfo.LayoutInfo.ContentArea.X += xShift;
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renderInfo.LayoutInfo.ContentArea.Y += yShift;
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Renderer renderer = Create(_gfx, _documentRenderer, renderInfo, _fieldInfos);
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renderer.Render();
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renderInfo.LayoutInfo.ContentArea.X = savedX;
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renderInfo.LayoutInfo.ContentArea.Y = savedY;
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}
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}
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protected void RenderByInfos(RenderInfo[] renderInfos)
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{
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RenderByInfos(0, 0, renderInfos);
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}
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/// <summary>
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/// Gets the render information necessary to render and position the object.
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/// </summary>
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public RenderInfo RenderInfo
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{
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get { return _renderInfo; }
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}
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protected RenderInfo _renderInfo;
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/// <summary>
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/// Sets the field infos object.
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/// </summary>
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/// <remarks>This property is set by the AreaProvider.</remarks>
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public FieldInfos FieldInfos
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{
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set { _fieldInfos = value; }
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}
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protected FieldInfos _fieldInfos;
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/// <summary>
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/// Renders (draws) the object to the Graphics object.
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/// </summary>
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public abstract void Render();
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/// <summary>
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/// Formats the object by calculating distances and linebreaks and stopping when the area is filled.
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/// </summary>
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/// <param name="area">The area to render into.</param>
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/// <param name="previousFormatInfo">An information object received from a previous call of Format().
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/// Null for the first call.</param>
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public abstract void Format(Area area, FormatInfo previousFormatInfo);
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/// <summary>
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/// Creates a fitting renderer for the given document object for formatting.
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/// </summary>
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/// <param name="gfx">The XGraphics object to do measurements on.</param>
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/// <param name="documentRenderer">The document renderer.</param>
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/// <param name="documentObject">the document object to format.</param>
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/// <param name="fieldInfos">The field infos.</param>
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/// <returns>The fitting Renderer.</returns>
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public static Renderer Create(XGraphics gfx, DocumentRenderer documentRenderer, DocumentObject documentObject, FieldInfos fieldInfos)
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{
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Renderer renderer = null;
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if (documentObject is Paragraph)
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renderer = new ParagraphRenderer(gfx, (Paragraph)documentObject, fieldInfos);
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else if (documentObject is Table)
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renderer = new TableRenderer(gfx, (Table)documentObject, fieldInfos);
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else if (documentObject is PageBreak)
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renderer = new PageBreakRenderer(gfx, (PageBreak)documentObject, fieldInfos);
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else if (documentObject is TextFrame)
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renderer = new TextFrameRenderer(gfx, (TextFrame)documentObject, fieldInfos);
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else if (documentObject is Chart)
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renderer = new ChartRenderer(gfx, (Chart)documentObject, fieldInfos);
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else if (documentObject is Image)
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renderer = new ImageRenderer(gfx, (Image)documentObject, fieldInfos);
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if (renderer != null)
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renderer._documentRenderer = documentRenderer;
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return renderer;
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}
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/// <summary>
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/// Creates a fitting renderer for the render info to render and layout with.
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/// </summary>
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/// <param name="gfx">The XGraphics object to render on.</param>
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/// <param name="documentRenderer">The document renderer.</param>
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/// <param name="renderInfo">The RenderInfo object stored after a previous call of Format().</param>
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/// <param name="fieldInfos">The field infos.</param>
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/// <returns>The fitting Renderer.</returns>
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public static Renderer Create(XGraphics gfx, DocumentRenderer documentRenderer, RenderInfo renderInfo, FieldInfos fieldInfos)
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{
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Renderer renderer = null;
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if (renderInfo.DocumentObject is Paragraph)
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renderer = new ParagraphRenderer(gfx, renderInfo, fieldInfos);
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else if (renderInfo.DocumentObject is Table)
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renderer = new TableRenderer(gfx, renderInfo, fieldInfos);
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else if (renderInfo.DocumentObject is PageBreak)
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renderer = new PageBreakRenderer(gfx, renderInfo, fieldInfos);
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else if (renderInfo.DocumentObject is TextFrame)
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renderer = new TextFrameRenderer(gfx, renderInfo, fieldInfos);
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else if (renderInfo.DocumentObject is Chart)
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renderer = new ChartRenderer(gfx, renderInfo, fieldInfos);
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//else if (renderInfo.DocumentObject is Chart)
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// renderer = new ChartRenderer(gfx, renderInfo, fieldInfos);
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else if (renderInfo.DocumentObject is Image)
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renderer = new ImageRenderer(gfx, renderInfo, fieldInfos);
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if (renderer != null)
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renderer._documentRenderer = documentRenderer;
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return renderer;
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}
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public readonly static XUnit Tolerance = XUnit.FromPoint(0.001);
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private XUnit _maxElementHeight = -1;
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protected DocumentObject _documentObject;
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protected DocumentRenderer _documentRenderer;
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protected XGraphics _gfx;
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}
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}
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