Metro/FooEditEngine/Print/D2DPrintPreviewRender.cs

   1 /*
   2  * Copyright (C) 2013 FooProject
   3  * * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
   4  * the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
   5
   6  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
   7  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   8
   9 You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
  10  */
  11 using System;
  12 using System.Collections.Generic;
  13 using Windows.Graphics.Display;
  14 using Windows.UI.Xaml.Media;
  15 using Windows.UI.Xaml.Media.Imaging;
  16 using SharpDX;
  17 using SharpDX.WIC;
  18 using DXGI = SharpDX.DXGI;
  19 using D2D = SharpDX.Direct2D1;
  20 using D3D = SharpDX.Direct3D;
  21 using D3D11 = SharpDX.Direct3D11;
  22 using FooEditEngine.Metro;
  23 using DotNetTextStore;
  24 using DotNetTextStore.UnmanagedAPI.TSF;
  25 using DotNetTextStore.UnmanagedAPI.WinDef;
  26
  27 namespace FooEditEngine
  28 {
  29     sealed class D2DPrintPreviewRender : D2DRenderBase, ITextRender, IPrintableTextRender
  30     {
  31         DXGI.Surface Surface;
  32         D3D11.Texture2D Texture;
  33         D2D.Device D2DDevice;
  34         D2D.DeviceContext D2DContext;
  35         D2D.Bitmap1 Bitmap;
  36         Size Size;
  37         float dpi;
  38
  39         public D2DPrintPreviewRender(string fontName, double fontSize, Size size,float dpi)
  40             : base()
  41         {
  42             this.Size = size;
  43             this.dpi = dpi;
  44
  45             base.ConstructDeviceResource(size.Width, size.Height);
  46             base.InitTextFormat(fontName, (float)fontSize);
  47         }
  48
  49         public override void GetDpi(out float dpix, out float dpiy)
  50         {
  51             dpix = this.dpi;
  52             dpiy = this.dpi;
  53         }
  54
  55         public void DrawContent(PrintableView view, IPrintPreviewDxgiPackageTarget target, uint page)
  56         {
  57             base.BegineDraw();
  58             view.Draw(view.PageBound);
  59             base.EndDraw();
  60             target.DrawPage(page, this.Surface.NativePointer, this.dpi, this.dpi);
  61         }
  62
  63         public void Resize(float width,float height)
  64         {
  65             this.ReConstructDeviceResource(width, height);
  66         }
  67
  68         public void SetScale(float scale)
  69         {
  70             this.D2DContext.Transform = Matrix3x2.Scaling(1/scale);
  71         }
  72
  73         protected override D2D.RenderTarget ConstructRender(D2D.Factory1 factory, D2D.RenderTargetProperties prop, double width, double height)
  74         {
  75             D3D11.Texture2DDescription desc = new D3D11.Texture2DDescription();
  76             desc.Width = (int)(width * this.dpi / 96);
  77             desc.Height = (int)(height * this.dpi / 96);
  78             desc.Format = DXGI.Format.B8G8R8A8_UNorm;
  79             desc.BindFlags = D3D11.BindFlags.RenderTarget | D3D11.BindFlags.ShaderResource;
  80             desc.ArraySize = 1;
  81             desc.MipLevels = 1;
  82             desc.Usage = D3D11.ResourceUsage.Default;
  83             desc.CpuAccessFlags = 0;
  84             desc.SampleDescription = new DXGI.SampleDescription(1, 0);
  85             this.Texture = new D3D11.Texture2D(base.D3DDevice, desc);
  86
  87             this.Surface = this.Texture.QueryInterface<DXGI.Surface>();
  88
  89             this.D2DDevice = new D2D.Device(factory, this.DXGIDevice);
  90
  91             this.D2DContext = new D2D.DeviceContext(this.D2DDevice, D2D.DeviceContextOptions.None);
  92
  93             this.D2DContext.DotsPerInch = new Size2F(this.dpi, this.dpi);
  94
  95             D2D.BitmapProperties1 bmpProp = new D2D.BitmapProperties1();
  96             bmpProp.BitmapOptions = D2D.BitmapOptions.Target | D2D.BitmapOptions.CannotDraw;
  97             bmpProp.PixelFormat = new D2D.PixelFormat(DXGI.Format.B8G8R8A8_UNorm, D2D.AlphaMode.Premultiplied);
  98
  99             this.Bitmap = new D2D.Bitmap1(this.D2DContext, this.Surface, bmpProp);
 100
 101             this.D2DContext.Target = this.Bitmap;
 102
 103             return this.D2DContext;
 104         }
 105
 106         protected override void ConstrctedResource()
 107         {
 108         }
 109
 110         protected override void DestructRender()
 111         {
 112             if (this.Texture != null)
 113                 this.Texture.Dispose();
 114             if (this.Surface != null)
 115                 this.Surface.Dispose();
 116             if (this.Bitmap != null)
 117                 this.Bitmap.Dispose();
 118             if (this.D2DDevice != null)
 119                 this.D2DDevice.Dispose();
 120             if (this.D2DContext != null)
 121                 this.D2DContext.Dispose();
 122         }
 123
 124         protected override void ReCreateTarget()
 125         {
 126         }
 127
 128         public float HeaderHeight
 129         {
 130             get { return (float)this.emSize.Height; }
 131         }
 132
 133         public float FooterHeight
 134         {
 135             get { return (float)this.emSize.Height; }
 136         }
 137     }
 138 }