Windows/FooEditEngine/D2DTextRender.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 System.Linq;
  14 using System.Text;
  15 using System.Windows;
  16 using System.Drawing;
  17 using FooEditEngine;
  18 using SharpDX;
  19 using D2D = SharpDX.Direct2D1;
  20 using DW = SharpDX.DirectWrite;
  21 using DXGI = SharpDX.DXGI;
  22 using System.Runtime.InteropServices;
  23
  24 namespace FooEditEngine.Windows
  25 {
  26
  27     sealed class D2DTextRender : D2DRenderCommon, IEditorRender, IDisposable
  28     {
  29         FooTextBox TextBox;
  30         string fontName;
  31         float fontSize;
  32
  33         public D2DTextRender(FooTextBox textbox)
  34         {
  35             this.TextBox = textbox;
  36
  37             textbox.SizeChanged += new EventHandler(textbox_SizeChanged);
  38             textbox.FontChanged += new EventHandler(textbox_FontChanged);
  39
  40             Size size = textbox.Size;
  41             this.fontName = textbox.Font.Name;
  42             this.fontSize = textbox.Font.Size;
  43             this.InitTextFormat(textbox.Font.Name, (float)textbox.Font.Size);
  44             //初期化ができないので適当なサイズで作る
  45             this.ReConstructDeviceResource(100, 100);
  46         }
  47
  48         public override void GetDpi(out float dpix, out float dpiy)
  49         {
  50             IntPtr hDc = NativeMethods.GetDC(IntPtr.Zero);
  51             dpix = NativeMethods.GetDeviceCaps(hDc, NativeMethods.LOGPIXELSX);
  52             dpiy = NativeMethods.GetDeviceCaps(hDc, NativeMethods.LOGPIXELSY);
  53             NativeMethods.ReleaseDC(IntPtr.Zero, hDc);
  54         }
  55
  56         void textbox_FontChanged(object sender, EventArgs e)
  57         {
  58             FooTextBox textbox = (FooTextBox)sender;
  59             Font font = textbox.Font;
  60             this.fontName = font.Name;
  61             this.fontSize = font.Size;
  62             DW.FontWeight weigth = font.Bold ? DW.FontWeight.Bold : DW.FontWeight.Normal;
  63             DW.FontStyle style = font.Italic ? DW.FontStyle.Italic : DW.FontStyle.Normal;
  64             this.InitTextFormat(font.Name, font.Size,weigth,style);
  65         }
  66
  67         void textbox_SizeChanged(object sender, EventArgs e)
  68         {
  69             FooTextBox textbox = (FooTextBox)sender;
  70             this.ReConstructDeviceResource(this.TextBox.Width, this.TextBox.Height);
  71         }
  72
  73         public static Color4 ToColor4(System.Drawing.Color color)
  74         {
  75             return new Color4(color.R / 255.0f, color.G / 255.0f, color.B / 255.0f, color.A / 255.0f);
  76         }
  77
  78
  79         public void DrawOneLine(LineToIndexTable lti, int row, double x, double y, IEnumerable<Selection> SelectRanges)
  80         {
  81             this.DrawOneLine(lti,
  82                 row,
  83                 x,
  84                 y,
  85                 SelectRanges,
  86                 null);
  87         }
  88
  89         public override void DrawCachedBitmap(Rectangle rect)
  90         {
  91             if (this.render == null || this.render.IsDisposed)
  92                 return;
  93             render.DrawBitmap(this.cachedBitMap, rect, 1.0f, D2D.BitmapInterpolationMode.Linear, rect);
  94         }
  95
  96         public override void CacheContent()
  97         {
  98             if (this.render == null || this.cachedBitMap == null || this.cachedBitMap.IsDisposed || this.render.IsDisposed)
  99                 return;
 100             //render.Flush();
 101             this.cachedBitMap.CopyFromRenderTarget(this.render, new SharpDX.Point(), new SharpDX.Rectangle(0, 0, (int)this.renderSize.Width, (int)this.renderSize.Height));
 102             this.hasCache = true;
 103         }
 104
 105         public void DrawContent(EditView view,Rectangle updateRect)
 106         {
 107             base.BegineDraw();
 108             view.Draw(updateRect);
 109             base.EndDraw();
 110         }
 111
 112         D2D.WindowRenderTarget WindowRender;
 113
 114         protected override D2D.RenderTarget ConstructRender(D2D.Factory factory, D2D.RenderTargetProperties prop, double width, double height)
 115         {
 116             D2D.HwndRenderTargetProperties hwndProp = new D2D.HwndRenderTargetProperties();
 117             hwndProp.Hwnd = this.TextBox.Handle;
 118             hwndProp.PixelSize = new SharpDX.Size2(this.TextBox.Size.Width,this.TextBox.Size.Height);
 119             hwndProp.PresentOptions = D2D.PresentOptions.Immediately;
 120             this.WindowRender = new D2D.WindowRenderTarget(factory,prop,hwndProp);
 121             return this.WindowRender;
 122         }
 123
 124         protected override void ConstrctedResource()
 125         {
 126             this.Foreground = ToColor4(this.TextBox.Foreground);
 127             this.Background = ToColor4(this.TextBox.Background);
 128             this.ControlChar = ToColor4(this.TextBox.ControlChar);
 129             this.Url = ToColor4(this.TextBox.Url);
 130             this.Keyword1 = ToColor4(this.TextBox.Keyword1);
 131             this.Keyword2 = ToColor4(this.TextBox.Keyword2);
 132             this.Literal = ToColor4(this.TextBox.Literal);
 133             this.Comment = ToColor4(this.TextBox.Comment);
 134             this.Hilight = ToColor4(this.TextBox.Hilight);
 135             this.LineMarker = ToColor4(this.TextBox.LineMarker);
 136             this.InsertCaret = ToColor4(this.TextBox.InsertCaret);
 137             this.OverwriteCaret = ToColor4(this.TextBox.OverwriteCaret);
 138             this.UpdateArea = ToColor4(this.TextBox.UpdateArea);
 139         }
 140
 141         protected override void DestructRender()
 142         {
 143             if (this.WindowRender != null)
 144                 this.WindowRender.Dispose();
 145         }
 146     }
 147
 148     internal static class NativeMethods
 149     {
 150         public const int LOGPIXELSX = 88;
 151         public const int LOGPIXELSY = 90;
 152
 153         [DllImport("gdi32.dll")]
 154         public static extern int GetDeviceCaps(IntPtr hDc, int nIndex);
 155
 156         [DllImport("user32.dll")]
 157         public static extern IntPtr GetDC(IntPtr hWnd);
 158
 159         [DllImport("user32.dll")]
 160         public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDc);
 161     }
 162 }