SharpDX/Samples/DirectWrite/TextDialog/TextDialog.cs at master · CSharpDev/SharpDX

346 lines (306 loc) · 13.1 KB
﻿// Copyright (c) 2010-2013 SharpDX - Alexandre Mutel
// 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.
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Globalization;
using System.Windows.Forms;
using SharpDX;
using SharpDX.Direct2D1;
using SharpDX.DirectWrite;
using SharpDX.DXGI;
using AlphaMode = SharpDX.Direct2D1.AlphaMode;
using Color = SharpDX.Color;
using Factory = SharpDX.Direct2D1.Factory;
using FontStyle = SharpDX.DirectWrite.FontStyle;
namespace TextDialog
    /// <summary>
    /// Shows font enumeration, changing of font family, size, weight, slope, and the displayed string of DirectWrite text with changes rendered in real time.
    /// Port of DirectWrite sample TextDialogSample from Windows 7 SDK samples.
    /// http://msdn.microsoft.com/en-us/library/dd742748%28v=VS.85%29.aspx
    /// </summary>
    public partial class TextDialog : Form
        public Factory Factory2D { get; private set; }
        public SharpDX.DirectWrite.Factory FactoryDWrite { get; private set; }
        public WindowRenderTarget RenderTarget2D { get; private set; }
        public SolidColorBrush SceneColorBrush { get; private set; }
        public string FontFamilyName { get { return comboBoxFont.SelectedItem.ToString();  } }
        public float FontSize { get { return trackBarFontSize.Value; } }
        public string FontText { get { return textBox.Text; } }
        public bool FontIsItalic { get { return checkBoxItalic.Checked; } }
        public bool FontIsBold { get { return checkBoxBold.Checked; } }
        public bool FontIsUnderline { get { return checkBoxUnderline.Checked; } }
        public TextFormat CurrentTextFormat { get; private set; }
        public TextLayout CurrentTextLayout { get; private set; }
        public TextRange CurrentTextRange { get { return new TextRange(0, FontText.Length); } }
        /// <summary>
        /// Initializes a new instance of the <see cref="TextDialog"/> class.
        /// </summary>
        public TextDialog()
            InitializeComponent();
                InitDirect2DAndDirectWrite();
                InitFontFamilyNames();
                UpdateTextFormatAndLayout();
            catch (Exception ex)
                LogException(ex);
                Environment.Exit(1);
            renderControl.Paint += RenderControlPaint;
            renderControl.Resize += new System.EventHandler(RenderControlResize);
        /// <summary>
        /// Inits the direct2D and direct write.
        /// </summary>
        private void InitDirect2DAndDirectWrite()
            Factory2D = new SharpDX.Direct2D1.Factory();
            FactoryDWrite = new SharpDX.DirectWrite.Factory();
            var properties = new HwndRenderTargetProperties();
            properties.Hwnd = renderControl.Handle;
            properties.PixelSize = new Size2(renderControl.ClientSize.Width, renderControl.ClientSize.Height);
            properties.PresentOptions = PresentOptions.None;
            RenderTarget2D = new WindowRenderTarget(Factory2D, new RenderTargetProperties(new PixelFormat(Format.Unknown, AlphaMode.Premultiplied)), properties);
            RenderTarget2D.AntialiasMode = AntialiasMode.PerPrimitive;
            RenderTarget2D.TextAntialiasMode = TextAntialiasMode.Cleartype;
            SceneColorBrush = new SolidColorBrush(RenderTarget2D, Color.Black);            
        /// <summary>
        /// Inits the font family names from DirectWrite
        /// </summary>
        private void InitFontFamilyNames()
            var fontCollection = FactoryDWrite.GetSystemFontCollection(false);
            var familyCount = fontCollection.FontFamilyCount;
            List<string> names = new List<string>();
            for (int i = 0; i < familyCount; i++)
                var fontFamily = fontCollection.GetFontFamily(i);
                var familyNames = fontFamily.FamilyNames;
                int index;
                if (!familyNames.FindLocaleName(CultureInfo.CurrentCulture.Name, out index))
                    familyNames.FindLocaleName("en-us", out index);
                names.Add(familyNames.GetString(index));     
            names.Sort();
            comboBoxFont.Items.AddRange(names.ToArray());
            comboBoxFont.SelectedItem = "Gabriola";
        /// <summary>
        /// Updates the TextFormat and TextLayout.
        /// </summary>
        private void UpdateTextFormatAndLayout()
                if (CurrentTextFormat != null)
                    CurrentTextFormat.Dispose();
                    CurrentTextFormat = null;
                if (CurrentTextLayout != null)
                    CurrentTextLayout.Dispose();
                    CurrentTextLayout = null;
                // Initialize a TextFormat
                CurrentTextFormat = new TextFormat(FactoryDWrite, FontFamilyName, FontSize) { TextAlignment = TextAlignment.Center, ParagraphAlignment = ParagraphAlignment.Center };
                CurrentTextLayout = new TextLayout(FactoryDWrite, FontText, CurrentTextFormat, renderControl.Width, renderControl.Height);
                // Set a stylistic typography
                var typo = new Typography(FactoryDWrite);
                typo.AddFontFeature(new FontFeature(FontFeatureTag.StylisticSet7, 1));
                CurrentTextLayout.SetTypography(typo, CurrentTextRange);
                typo.Dispose();
                UpdateBold();
                UpdateItalic();
                UpdateUnderline();
                UpdateFontSize();
            catch (Exception ex)
                LogException(ex);
        private void LogException(Exception ex)
            MessageBox.Show(this, string.Format(System.Globalization.CultureInfo.InvariantCulture, "Unable to use the font {0}. Reason : {1}", FontFamilyName, ex), "Error while setting text layout", MessageBoxButtons.OK, MessageBoxIcon.Error);
        /// <summary>
        /// Updates the bold.
        /// </summary>
        private void UpdateBold()
                CurrentTextLayout.SetFontWeight(FontIsBold ? FontWeight.Bold : FontWeight.Normal, CurrentTextRange);
            catch (Exception ex)
                LogException(ex);
        /// <summary>
        /// Updates the italic.
        /// </summary>
        private void UpdateItalic()
                CurrentTextLayout.SetFontStyle(FontIsItalic ? FontStyle.Italic : FontStyle.Normal, CurrentTextRange);
            catch (Exception ex)
                LogException(ex);                
        /// <summary>
        /// Updates the underline.
        /// </summary>
        private void UpdateUnderline()
                CurrentTextLayout.SetUnderline(FontIsUnderline, CurrentTextRange);
            catch (Exception ex)
                LogException(ex);
        /// <summary>
        /// Updates the size of the font.
        /// </summary>
        private void UpdateFontSize()
                CurrentTextLayout.SetFontSize(FontSize, CurrentTextRange);
            catch (Exception ex)
                LogException(ex);                
        /// <summary>
        /// Handles the Resize event of the renderControl control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        void RenderControlResize(object sender, System.EventArgs e)
                RenderTarget2D.Resize(new Size2(renderControl.Size.Width, renderControl.Size.Height));
                CurrentTextLayout.MaxWidth = renderControl.Size.Width;
                CurrentTextLayout.MaxHeight = renderControl.Size.Height;
            catch (Exception ex)
                LogException(ex);
        /// <summary>
        /// Handles the Paint event of the renderControl control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.PaintEventArgs"/> instance containing the event data.</param>
        void RenderControlPaint(object sender, PaintEventArgs e)
                RenderTarget2D.BeginDraw();
                RenderTarget2D.Clear(Color.White);
                RenderTarget2D.DrawTextLayout(new Vector2(0, 0), CurrentTextLayout, SceneColorBrush);
                RenderTarget2D.EndDraw();
            catch (Exception ex)
                LogException(ex);
        /// <summary>
        /// Handles the SelectedIndexChanged event of the comboBoxFont control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void ComboBoxFontSelectedIndexChanged(object sender, System.EventArgs e)
            UpdateTextFormatAndLayout();
            Refresh();
        /// <summary>
        /// Handles the TextChanged event of the textBox control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void TextBoxTextChanged(object sender, System.EventArgs e)
            UpdateTextFormatAndLayout();
            Refresh();
        /// <summary>
        /// Handles the CheckedChanged event of the checkBoxBold control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void CheckBoxBoldCheckedChanged(object sender, System.EventArgs e)
            UpdateBold();
            Refresh();
        /// <summary>
        /// Handles the CheckedChanged event of the checkBoxItalic control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void CheckBoxItalicCheckedChanged(object sender, System.EventArgs e)
            UpdateItalic();
            Refresh();
        /// <summary>
        /// Handles the CheckedChanged event of the checkBoxUnderline control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void CheckBoxUnderlineCheckedChanged(object sender, System.EventArgs e)
            UpdateUnderline();
            Refresh();
        /// <summary>
        /// Handles the Scroll event of the trackBarFontSize control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        private void TrackBarFontSizeScroll(object sender, System.EventArgs e)
            labelFontSize.Text = "Font Size " + FontSize;
            UpdateFontSize();
            Refresh();
Provide feedback

Saved searches

Use saved searches to filter your results more quickly

FilesExpand file tree

TextDialog.cs

Latest commit

History

TextDialog.cs

File metadata and controls
