235 lines
9.0 KiB
C#
235 lines
9.0 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 System;
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using PdfSharp.Drawing;
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using MigraDoc.DocumentObjectModel.Shapes;
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using MigraDoc.DocumentObjectModel.publics;
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namespace MigraDoc.Rendering
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{
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/// <summary>
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/// Renders a shape to an XGraphics object.
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/// </summary>
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public abstract class ShapeRenderer : Renderer
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{
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public ShapeRenderer(XGraphics gfx, Shape shape, FieldInfos fieldInfos)
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: base(gfx, shape, fieldInfos)
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{
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_shape = shape;
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LineFormat lf = (LineFormat)_shape.GetValue("LineFormat", GV.ReadOnly);
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_lineFormatRenderer = new LineFormatRenderer(lf, gfx);
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}
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public ShapeRenderer(XGraphics gfx, RenderInfo renderInfo, FieldInfos fieldInfos)
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: base(gfx, renderInfo, fieldInfos)
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{
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_shape = (Shape)renderInfo.DocumentObject;
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LineFormat lf = (LineFormat)_shape.GetValue("LineFormat", GV.ReadOnly);
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_lineFormatRenderer = new LineFormatRenderer(lf, gfx);
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FillFormat ff = (FillFormat)_shape.GetValue("FillFormat", GV.ReadOnly);
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_fillFormatRenderer = new FillFormatRenderer(ff, gfx);
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}
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public override LayoutInfo InitialLayoutInfo
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{
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get
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{
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LayoutInfo layoutInfo = new LayoutInfo();
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layoutInfo.MarginTop = _shape.WrapFormat.DistanceTop.Point;
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layoutInfo.MarginLeft = _shape.WrapFormat.DistanceLeft.Point;
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layoutInfo.MarginBottom = _shape.WrapFormat.DistanceBottom.Point;
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layoutInfo.MarginRight = _shape.WrapFormat.DistanceRight.Point;
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layoutInfo.KeepTogether = true;
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layoutInfo.KeepWithNext = false;
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layoutInfo.PageBreakBefore = false;
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layoutInfo.VerticalReference = GetVerticalReference();
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layoutInfo.HorizontalReference = GetHorizontalReference();
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layoutInfo.Floating = GetFloating();
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if (layoutInfo.Floating == Floating.TopBottom && !_shape.Top.Position.IsEmpty)
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layoutInfo.MarginTop = Math.Max(layoutInfo.MarginTop, _shape.Top.Position);
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return layoutInfo;
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}
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}
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Floating GetFloating()
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{
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if (_shape.RelativeVertical != RelativeVertical.Line && _shape.RelativeVertical != RelativeVertical.Paragraph)
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return Floating.None;
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switch (_shape.WrapFormat.Style)
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{
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case WrapStyle.None:
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case WrapStyle.Through:
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return Floating.None;
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}
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return Floating.TopBottom;
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}
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/// <summary>
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/// Gets the shape width including line width.
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/// </summary>
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protected virtual XUnit ShapeWidth
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{
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get { return _shape.Width + _lineFormatRenderer.GetWidth(); }
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}
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/// <summary>
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/// Gets the shape height including line width.
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/// </summary>
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protected virtual XUnit ShapeHeight
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{
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get { return _shape.Height + _lineFormatRenderer.GetWidth(); }
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}
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/// <summary>
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/// Formats the shape.
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/// </summary>
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/// <param name="area">The area to fit in the shape.</param>
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/// <param name="previousFormatInfo"></param>
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public override void Format(Area area, FormatInfo previousFormatInfo)
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{
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Floating floating = GetFloating();
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bool fits = floating == Floating.None || ShapeHeight <= area.Height;
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((ShapeFormatInfo)_renderInfo.FormatInfo).Fits = fits;
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FinishLayoutInfo(area);
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}
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void FinishLayoutInfo(Area area)
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{
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LayoutInfo layoutInfo = _renderInfo.LayoutInfo;
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Area contentArea = new Rectangle(area.X, area.Y, ShapeWidth, ShapeHeight);
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layoutInfo.ContentArea = contentArea;
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layoutInfo.MarginTop = _shape.WrapFormat.DistanceTop.Point;
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layoutInfo.MarginLeft = _shape.WrapFormat.DistanceLeft.Point;
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layoutInfo.MarginBottom = _shape.WrapFormat.DistanceBottom.Point;
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layoutInfo.MarginRight = _shape.WrapFormat.DistanceRight.Point;
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layoutInfo.KeepTogether = true;
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layoutInfo.KeepWithNext = false;
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layoutInfo.PageBreakBefore = false;
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layoutInfo.MinWidth = ShapeWidth;
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if (_shape.Top.ShapePosition == ShapePosition.Undefined)
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layoutInfo.Top = _shape.Top.Position.Point;
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layoutInfo.VerticalAlignment = GetVerticalAlignment();
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layoutInfo.HorizontalAlignment = GetHorizontalAlignment();
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if (_shape.Left.ShapePosition == ShapePosition.Undefined)
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layoutInfo.Left = _shape.Left.Position.Point;
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layoutInfo.HorizontalReference = GetHorizontalReference();
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layoutInfo.VerticalReference = GetVerticalReference();
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layoutInfo.Floating = GetFloating();
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}
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HorizontalReference GetHorizontalReference()
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{
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switch (_shape.RelativeHorizontal)
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{
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case RelativeHorizontal.Margin:
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return HorizontalReference.PageMargin;
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case RelativeHorizontal.Page:
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return HorizontalReference.Page;
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}
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return HorizontalReference.AreaBoundary;
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}
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VerticalReference GetVerticalReference()
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{
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switch (_shape.RelativeVertical)
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{
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case RelativeVertical.Margin:
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return VerticalReference.PageMargin;
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case RelativeVertical.Page:
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return VerticalReference.Page;
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}
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return VerticalReference.PreviousElement;
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}
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ElementAlignment GetVerticalAlignment()
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{
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switch (_shape.Top.ShapePosition)
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{
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case ShapePosition.Center:
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return ElementAlignment.Center;
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case ShapePosition.Bottom:
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return ElementAlignment.Far;
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}
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return ElementAlignment.Near;
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}
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protected void RenderFilling()
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{
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Area contentArea = _renderInfo.LayoutInfo.ContentArea;
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XUnit lineWidth = _lineFormatRenderer.GetWidth();
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// Half of the line is drawn outside the shape, the other half inside the shape.
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// Therefore we have to reduce the position of the filling by 0.5 lineWidth and width and height by 2 lineWidth.
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_fillFormatRenderer.Render(contentArea.X + lineWidth / 2, contentArea.Y + lineWidth / 2,
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contentArea.Width - 2 * lineWidth, contentArea.Height - 2 * lineWidth);
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}
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protected void RenderLine()
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{
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Area contentArea = _renderInfo.LayoutInfo.ContentArea;
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XUnit lineWidth = _lineFormatRenderer.GetWidth();
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XUnit width = contentArea.Width - lineWidth;
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XUnit height = contentArea.Height - lineWidth;
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_lineFormatRenderer.Render(contentArea.X, contentArea.Y, width, height);
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}
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ElementAlignment GetHorizontalAlignment()
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{
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switch (_shape.Left.ShapePosition)
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{
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case ShapePosition.Center:
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return ElementAlignment.Center;
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case ShapePosition.Right:
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return ElementAlignment.Far;
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case ShapePosition.Outside:
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return ElementAlignment.Outside;
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case ShapePosition.Inside:
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return ElementAlignment.Inside;
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}
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return ElementAlignment.Near;
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}
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protected LineFormatRenderer _lineFormatRenderer;
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protected FillFormatRenderer _fillFormatRenderer;
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protected Shape _shape;
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}
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}
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