393 lines
14 KiB
C#
393 lines
14 KiB
C#
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#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Stefan Lange
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//
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// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.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 System.ComponentModel;
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using PdfSharp.Internal;
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#if GDI
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using GdiLinearGradientBrush = System.Drawing.Drawing2D.LinearGradientBrush;
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#endif
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#if WPF
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using System.Windows;
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using System.Windows.Media;
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using SysPoint = System.Windows.Point;
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using SysSize = System.Windows.Size;
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using SysRect = System.Windows.Rect;
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using WpfBrush = System.Windows.Media.Brush;
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using WpfLinearGradientBrush = System.Windows.Media.LinearGradientBrush;
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#endif
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#if UWP
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using Windows.UI;
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using Windows.UI.Xaml.Media;
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using Microsoft.Graphics.Canvas;
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using Microsoft.Graphics.Canvas.Brushes;
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#endif
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// ReSharper disable RedundantNameQualifier because it is required for hybrid build
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namespace PdfSharp.Drawing
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{
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/// <summary>
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/// Defines a Brush with a linear gradient.
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/// </summary>
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public sealed class XLinearGradientBrush : XBrush
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{
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#if GDI
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(System.Drawing.Point point1, System.Drawing.Point point2, XColor color1, XColor color2)
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: this(new XPoint(point1), new XPoint(point2), color1, color2)
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{ }
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(PointF point1, PointF point2, XColor color1, XColor color2)
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: this(new XPoint(point1), new XPoint(point2), color1, color2)
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{ }
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#endif
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#if WPF
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(SysPoint point1, SysPoint point2, XColor color1, XColor color2)
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: this(new XPoint(point1), new XPoint(point2), color1, color2)
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{ }
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#endif
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(XPoint point1, XPoint point2, XColor color1, XColor color2)
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{
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_point1 = point1;
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_point2 = point2;
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_color1 = color1;
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_color2 = color2;
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}
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#if GDI
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(Rectangle rect, XColor color1, XColor color2, XLinearGradientMode linearGradientMode)
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: this(new XRect(rect), color1, color2, linearGradientMode)
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{ }
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(RectangleF rect, XColor color1, XColor color2, XLinearGradientMode linearGradientMode)
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: this(new XRect(rect), color1, color2, linearGradientMode)
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{ }
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#endif
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#if WPF
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(Rect rect, XColor color1, XColor color2, XLinearGradientMode linearGradientMode)
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: this(new XRect(rect), color1, color2, linearGradientMode)
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{ }
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#endif
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/// <summary>
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/// Initializes a new instance of the <see cref="XLinearGradientBrush"/> class.
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/// </summary>
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public XLinearGradientBrush(XRect rect, XColor color1, XColor color2, XLinearGradientMode linearGradientMode)
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{
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if (!Enum.IsDefined(typeof(XLinearGradientMode), linearGradientMode))
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throw new InvalidEnumArgumentException("linearGradientMode", (int)linearGradientMode, typeof(XLinearGradientMode));
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if (rect.Width == 0 || rect.Height == 0)
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throw new ArgumentException("Invalid rectangle.", "rect");
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_useRect = true;
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_color1 = color1;
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_color2 = color2;
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_rect = rect;
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_linearGradientMode = linearGradientMode;
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}
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// TODO:
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//public XLinearGradientBrush(Rectangle rect, XColor color1, XColor color2, double angle);
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//public XLinearGradientBrush(RectangleF rect, XColor color1, XColor color2, double angle);
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//public XLinearGradientBrush(Rectangle rect, XColor color1, XColor color2, double angle, bool isAngleScaleable);
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//public XLinearGradientBrush(RectangleF rect, XColor color1, XColor color2, double angle, bool isAngleScaleable);
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//public XLinearGradientBrush(RectangleF rect, XColor color1, XColor color2, double angle, bool isAngleScaleable);
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//private Blend _GetBlend();
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//private ColorBlend _GetInterpolationColors();
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//private XColor[] _GetLinearColors();
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//private RectangleF _GetRectangle();
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//private Matrix _GetTransform();
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//private WrapMode _GetWrapMode();
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//private void _SetBlend(Blend blend);
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//private void _SetInterpolationColors(ColorBlend blend);
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//private void _SetLinearColors(XColor color1, XColor color2);
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//private void _SetTransform(Matrix matrix);
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//private void _SetWrapMode(WrapMode wrapMode);
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//public override object Clone();
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/// <summary>
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/// Gets or sets an XMatrix that defines a local geometric transform for this LinearGradientBrush.
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/// </summary>
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public XMatrix Transform
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{
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get { return _matrix; }
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set { _matrix = value; }
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}
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/// <summary>
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/// Translates the brush with the specified offset.
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/// </summary>
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public void TranslateTransform(double dx, double dy)
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{
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_matrix.TranslatePrepend(dx, dy);
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}
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/// <summary>
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/// Translates the brush with the specified offset.
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/// </summary>
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public void TranslateTransform(double dx, double dy, XMatrixOrder order)
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{
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_matrix.Translate(dx, dy, order);
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}
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/// <summary>
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/// Scales the brush with the specified scalars.
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/// </summary>
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public void ScaleTransform(double sx, double sy)
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{
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_matrix.ScalePrepend(sx, sy);
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}
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/// <summary>
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/// Scales the brush with the specified scalars.
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/// </summary>
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public void ScaleTransform(double sx, double sy, XMatrixOrder order)
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{
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_matrix.Scale(sx, sy, order);
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}
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/// <summary>
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/// Rotates the brush with the specified angle.
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/// </summary>
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public void RotateTransform(double angle)
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{
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_matrix.RotatePrepend(angle);
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}
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/// <summary>
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/// Rotates the brush with the specified angle.
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/// </summary>
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public void RotateTransform(double angle, XMatrixOrder order)
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{
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_matrix.Rotate(angle, order);
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}
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/// <summary>
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/// Multiply the brush transformation matrix with the specified matrix.
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/// </summary>
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public void MultiplyTransform(XMatrix matrix)
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{
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_matrix.Prepend(matrix);
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}
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/// <summary>
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/// Multiply the brush transformation matrix with the specified matrix.
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/// </summary>
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public void MultiplyTransform(XMatrix matrix, XMatrixOrder order)
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{
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_matrix.Multiply(matrix, order);
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}
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/// <summary>
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/// Resets the brush transformation matrix with identity matrix.
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/// </summary>
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public void ResetTransform()
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{
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_matrix = new XMatrix();
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}
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//public void SetBlendTriangularShape(double focus);
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//public void SetBlendTriangularShape(double focus, double scale);
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//public void SetSigmaBellShape(double focus);
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//public void SetSigmaBellShape(double focus, double scale);
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#if GDI
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internal override System.Drawing.Brush RealizeGdiBrush()
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{
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//if (dirty)
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//{
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// if (brush == null)
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// brush = new SolidBrush(color.ToGdiColor());
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// else
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// {
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// brush.Color = color.ToGdiColor();
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// }
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// dirty = false;
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//}
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// TODO: use dirty to optimize code
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GdiLinearGradientBrush brush;
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try
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{
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Lock.EnterGdiPlus();
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if (_useRect)
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{
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brush = new GdiLinearGradientBrush(_rect.ToRectangleF(),
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_color1.ToGdiColor(), _color2.ToGdiColor(), (LinearGradientMode)_linearGradientMode);
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}
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else
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{
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brush = new GdiLinearGradientBrush(
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_point1.ToPointF(), _point2.ToPointF(),
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_color1.ToGdiColor(), _color2.ToGdiColor());
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}
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if (!_matrix.IsIdentity)
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brush.Transform = _matrix.ToGdiMatrix();
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//brush.WrapMode = WrapMode.Clamp;
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}
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finally { Lock.ExitGdiPlus(); }
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return brush;
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}
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#endif
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#if WPF
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internal override WpfBrush RealizeWpfBrush()
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{
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//if (dirty)
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//{
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// if (brush == null)
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// brush = new SolidBrush(color.ToGdiColor());
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// else
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// {
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// brush.Color = color.ToGdiColor();
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// }
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// dirty = false;
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//}
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WpfLinearGradientBrush brush;
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if (_useRect)
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{
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#if !SILVERLIGHT
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brush = new WpfLinearGradientBrush(_color1.ToWpfColor(), _color2.ToWpfColor(), new SysPoint(0, 0), new SysPoint(1, 1));// rect.TopLeft, this.rect.BottomRight);
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//brush = new System.Drawing.Drawing2D.LinearGradientBrush(rect.ToRectangleF(),
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// color1.ToGdiColor(), color2.ToGdiColor(), (LinearGradientMode)linearGradientMode);
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#else
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GradientStop gs1 = new GradientStop();
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gs1.Color = _color1.ToWpfColor();
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gs1.Offset = 0;
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GradientStop gs2 = new GradientStop();
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gs2.Color = _color2.ToWpfColor();
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gs2.Offset = 1;
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GradientStopCollection gsc = new GradientStopCollection();
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gsc.Add(gs1);
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gsc.Add(gs2);
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brush = new LinearGradientBrush(gsc, 0);
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brush.StartPoint = new Point(0, 0);
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brush.EndPoint = new Point(1, 1);
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#endif
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}
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else
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{
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#if !SILVERLIGHT
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brush = new System.Windows.Media.LinearGradientBrush(_color1.ToWpfColor(), _color2.ToWpfColor(), _point1, _point2);
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//brush = new System.Drawing.Drawing2D.LinearGradientBrush(
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// point1.ToPointF(), point2.ToPointF(),
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// color1.ToGdiColor(), color2.ToGdiColor());
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#else
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GradientStop gs1 = new GradientStop();
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gs1.Color = _color1.ToWpfColor();
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gs1.Offset = 0;
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GradientStop gs2 = new GradientStop();
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gs2.Color = _color2.ToWpfColor();
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gs2.Offset = 1;
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GradientStopCollection gsc = new GradientStopCollection();
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gsc.Add(gs1);
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gsc.Add(gs2);
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brush = new LinearGradientBrush(gsc, 0);
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brush.StartPoint = _point1;
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brush.EndPoint = _point2;
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#endif
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}
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if (!_matrix.IsIdentity)
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{
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#if !SILVERLIGHT
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brush.Transform = new MatrixTransform(_matrix.ToWpfMatrix());
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#else
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MatrixTransform transform = new MatrixTransform();
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transform.Matrix = _matrix.ToWpfMatrix();
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brush.Transform = transform;
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#endif
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}
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return brush;
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}
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#endif
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#if UWP
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internal override ICanvasBrush RealizeCanvasBrush()
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{
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ICanvasBrush brush;
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brush = new CanvasSolidColorBrush(CanvasDevice.GetSharedDevice(), Colors.RoyalBlue);
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return brush;
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}
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#endif
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//public Blend Blend { get; set; }
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//public bool GammaCorrection { get; set; }
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//public ColorBlend InterpolationColors { get; set; }
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//public XColor[] LinearColors { get; set; }
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//public RectangleF Rectangle { get; }
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//public WrapMode WrapMode { get; set; }
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//private bool interpolationColorsWasSet;
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internal bool _useRect;
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internal XPoint _point1, _point2;
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internal XColor _color1, _color2;
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internal XRect _rect;
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internal XLinearGradientMode _linearGradientMode;
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internal XMatrix _matrix;
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}
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}
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