mirror of
https://github.com/ShareX/ShareX.git
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189 lines
No EOL
7.1 KiB
C#
189 lines
No EOL
7.1 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (C) 2008-2013 ShareX Developers
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using HelpersLib;
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Design;
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using System.Drawing.Drawing2D;
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using System.Drawing.Text;
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using System.IO;
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using System.Windows.Forms;
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namespace ImageEffectsLib
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{
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[Description("Text")]
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internal class DrawText : ImageEffect
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{
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[DefaultValue(PositionType.Bottom_Right), TypeConverter(typeof(EnumDescriptionConverter))]
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public PositionType Position { get; set; }
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[DefaultValue(5)]
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public int Offset { get; set; }
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[DefaultValue(false), Description("If watermark size bigger than source image then don't draw it.")]
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public bool AutoHide { get; set; }
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[DefaultValue("getsharex.com")]
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public string Text { get; set; }
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private FontSafe textFontSafe = new FontSafe();
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// Workaround for "System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
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[DefaultValue(typeof(Font), "Arial, 10pt")]
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public Font TextFont
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{
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get
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{
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return textFontSafe.GetFont();
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}
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set
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{
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using (value)
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{
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textFontSafe.SetFont(value);
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}
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}
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}
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[DefaultValue(typeof(Color), "White"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
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public Color TextColor { get; set; }
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[DefaultValue(true)]
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public bool DrawBackground { get; set; }
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[DefaultValue(5)]
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public int BackgroundPadding { get; set; }
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[DefaultValue(4)]
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public int CornerRadius { get; set; }
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[DefaultValue(typeof(Color), "Black"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
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public Color BorderColor { get; set; }
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[DefaultValue(typeof(Color), "100, 100, 100"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
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public Color BackgroundColor { get; set; }
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[DefaultValue(true)]
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public bool UseGradient { get; set; }
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[DefaultValue(typeof(Color), "Black"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
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public Color BackgroundColor2 { get; set; }
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[DefaultValue(LinearGradientMode.Vertical)]
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public LinearGradientMode GradientType { get; set; }
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public DrawText()
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{
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this.ApplyDefaultPropertyValues();
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}
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public override Image Apply(Image img)
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{
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if (string.IsNullOrEmpty(Text))
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{
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return img;
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}
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using (Font textFont = TextFont)
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{
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if (textFont == null || textFont.Size < 1)
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{
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return img;
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}
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NameParser parser = new NameParser(NameParserType.Text) { Picture = img };
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string parsedText = parser.Parse(Text);
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Size textSize = Helpers.MeasureText(parsedText, textFont);
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Size watermarkSize = new Size(textSize.Width + BackgroundPadding * 2, textSize.Height + BackgroundPadding * 2);
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if (AutoHide && ((watermarkSize.Width + Offset > img.Width) || (watermarkSize.Height + Offset > img.Height)))
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{
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return img;
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}
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using (Bitmap bmpWatermark = new Bitmap(watermarkSize.Width, watermarkSize.Height))
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using (Graphics gWatermark = Graphics.FromImage(bmpWatermark))
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{
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gWatermark.SetHighQuality();
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if (DrawBackground)
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{
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using (GraphicsPath backgroundPath = new GraphicsPath())
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{
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Rectangle backgroundRect = new Rectangle(0, 0, watermarkSize.Width, watermarkSize.Height);
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backgroundPath.AddRoundedRectangle(backgroundRect, CornerRadius);
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Brush backgroundBrush = null;
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try
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{
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if (UseGradient)
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{
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backgroundBrush = new LinearGradientBrush(backgroundRect, BackgroundColor, BackgroundColor2, GradientType);
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}
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else
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{
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backgroundBrush = new SolidBrush(BackgroundColor);
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}
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gWatermark.FillPath(backgroundBrush, backgroundPath);
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}
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finally
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{
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if (backgroundBrush != null) backgroundBrush.Dispose();
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}
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using (Pen borderPen = new Pen(BorderColor))
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{
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gWatermark.DrawPath(borderPen, backgroundPath);
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}
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}
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}
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gWatermark.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
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using (Brush textBrush = new SolidBrush(TextColor))
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using (StringFormat sf = new StringFormat { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center })
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{
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gWatermark.DrawString(parsedText, textFont, textBrush, bmpWatermark.Width / 2f, bmpWatermark.Height / 2f, sf);
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}
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using (Graphics gResult = Graphics.FromImage(img))
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{
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gResult.SetHighQuality();
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Point labelPosition = Helpers.GetPosition(Position, Offset, img.Size, watermarkSize);
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gResult.DrawImage(bmpWatermark, labelPosition.X, labelPosition.Y, bmpWatermark.Width, bmpWatermark.Height);
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}
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}
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}
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return img;
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}
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}
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} |