axisrenderer.cs

用C#實現能產生PDF格式文件的源碼

#region PDFsharp Charting - A .NET charting library based on PDFsharp
//
// Authors:
//   Niklas Schneider (mailto:[e-mail])
//
// Copyright (c) 2005-2007 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Diagnostics;
using PdfSharp.Drawing;

namespace PdfSharp.Charting.Renderers
{
  /// <summary>
  /// Represents the base for all specialized axis renderer. Initialization common too all
  /// axis renderer should come here.
  /// </summary>
  internal abstract class AxisRenderer : Renderer
  {
    /// <summary>
    /// Initializes a new instance of the AxisRenderer class with the specified renderer parameters.
    /// </summary>
    internal AxisRenderer(RendererParameters parms) : base(parms)
    {
    }

    /// <summary>
    /// Initializes the axis title of the rendererInfo. All missing font attributes will be taken
    /// from the specified defaultFont.
    /// </summary>
    protected void InitAxisTitle(AxisRendererInfo rendererInfo, XFont defaultFont)
    {
      if (rendererInfo.axis.title != null)
      {
        AxisTitleRendererInfo atri = new AxisTitleRendererInfo();
        rendererInfo.axisTitleRendererInfo = atri;

        atri.axisTitle = rendererInfo.axis.title;
        atri.AxisTitleText = rendererInfo.axis.title.caption;
        atri.AxisTitleAlignment = rendererInfo.axis.title.alignment;
        atri.AxisTitleVerticalAlignment = rendererInfo.axis.title.verticalAlignment;
        atri.AxisTitleFont = Converter.ToXFont(rendererInfo.axis.title.font, defaultFont);
        XColor fontColor = XColors.Black;
        if (rendererInfo.axis.title.font != null && !rendererInfo.axis.title.font.color.IsEmpty)
          fontColor = rendererInfo.axis.title.font.color;
        atri.AxisTitleBrush = new XSolidBrush(fontColor);
        atri.AxisTitleOrientation = rendererInfo.axis.title.orientation;
      }
    }

    /// <summary>
    /// Initializes the tick labels of the rendererInfo. All missing font attributes will be taken
    /// from the specified defaultFont.
    /// </summary>
    protected void InitTickLabels(AxisRendererInfo rendererInfo, XFont defaultFont)
    {
      if (rendererInfo.axis.tickLabels != null)
      {
        rendererInfo.TickLabelsFont = Converter.ToXFont(rendererInfo.axis.tickLabels.font, defaultFont);
        XColor fontColor = XColors.Black;
        if (rendererInfo.axis.tickLabels.font != null && !rendererInfo.axis.tickLabels.font.color.IsEmpty)
          fontColor = rendererInfo.axis.tickLabels.font.color;
        rendererInfo.TickLabelsBrush = new XSolidBrush(fontColor);

        rendererInfo.TickLabelsFormat = rendererInfo.axis.tickLabels.format;
        if (rendererInfo.TickLabelsFormat == null)
          rendererInfo.TickLabelsFormat = GetDefaultTickLabelsFormat();
      }
      else
      {
        rendererInfo.TickLabelsFont = defaultFont;
        rendererInfo.TickLabelsBrush = new XSolidBrush(XColors.Black);
        rendererInfo.TickLabelsFormat = GetDefaultTickLabelsFormat();
      }
    }
    
    /// <summary>
    /// Initializes the line format of the rendererInfo.
    /// </summary>
    protected void InitAxisLineFormat(AxisRendererInfo rendererInfo)
    {
      if (rendererInfo.axis.minorTickMarkInitialized)
        rendererInfo.MinorTickMark = rendererInfo.axis.MinorTickMark;

      if (rendererInfo.axis.majorTickMarkInitialized)
        rendererInfo.MajorTickMark = rendererInfo.axis.MajorTickMark;
      else
        rendererInfo.MajorTickMark = TickMarkType.Outside;

      if (rendererInfo.MinorTickMark != TickMarkType.None)
        rendererInfo.MinorTickMarkLineFormat = Converter.ToXPen(rendererInfo.axis.lineFormat, XColors.Black, DefaultMinorTickMarkLineWidth);

      if (rendererInfo.MajorTickMark != TickMarkType.None)
        rendererInfo.MajorTickMarkLineFormat = Converter.ToXPen(rendererInfo.axis.lineFormat, XColors.Black, DefaultMajorTickMarkLineWidth);

      if (rendererInfo.axis.lineFormat != null)
      {
        rendererInfo.LineFormat = Converter.ToXPen(rendererInfo.axis.LineFormat, XColors.Black, DefaultLineWidth);
        if (!rendererInfo.axis.majorTickMarkInitialized)
          rendererInfo.MajorTickMark = TickMarkType.Outside;
      }
    }
    
    /// <summary>
    /// Initializes the gridlines of the rendererInfo.
    /// </summary>
    protected void InitGridlines(AxisRendererInfo rendererInfo)
    {
      if (rendererInfo.axis.minorGridlines != null)
      {
        rendererInfo.MinorGridlinesLineFormat =
          Converter.ToXPen(rendererInfo.axis.minorGridlines.lineFormat, XColors.Black, DefaultGridLineWidth);
      }
      else if (rendererInfo.axis.hasMinorGridlines)
      {
        // No minor gridlines object are given, but user asked for.
        rendererInfo.MinorGridlinesLineFormat = new XPen(XColors.Black, DefaultGridLineWidth);
      }

      if (rendererInfo.axis.majorGridlines != null)
      {
        rendererInfo.MajorGridlinesLineFormat =
          Converter.ToXPen(rendererInfo.axis.majorGridlines.lineFormat, XColors.Black, DefaultGridLineWidth);
      }
      else if (rendererInfo.axis.hasMajorGridlines)
      {
        // No major gridlines object are given, but user asked for.
        rendererInfo.MajorGridlinesLineFormat = new XPen(XColors.Black, DefaultGridLineWidth);
      }
    }

    /// <summary>
    /// Default width for a variety of lines.
    /// </summary>
    protected const double DefaultLineWidth = 0.4; // 0.15 mm

    /// <summary>
    /// Default width for a gridlines.
    /// </summary>
    protected const double DefaultGridLineWidth = 0.15;

    /// <summary>
    /// Default width for major tick marks.
    /// </summary>
    protected const double DefaultMajorTickMarkLineWidth = 1;

    /// <summary>
    /// Default width for minor tick marks.
    /// </summary>
    protected const double DefaultMinorTickMarkLineWidth = 1;

    /// <summary>
    /// Default width of major tick marks.
    /// </summary>
    protected const double DefaultMajorTickMarkWidth = 4.3; // 1.5 mm

    /// <summary>
    /// Default width of minor tick marks.
    /// </summary>
    protected const double DefaultMinorTickMarkWidth = 2.8; // 1 mm

    /// <summary>
    /// Default width of space between label and tick mark.
    /// </summary>
    protected const double SpaceBetweenLabelAndTickmark = 2.1; // 0.7 mm

    protected abstract string GetDefaultTickLabelsFormat();
  }
}