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302 lines
12 KiB
C#
302 lines
12 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) 2007-2023 ShareX Team
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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 ShareX.HelpersLib;
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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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namespace ShareX.ImageEffectsLib
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{
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[Description("Text")]
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public class DrawTextEx : ImageEffect
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{
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[DefaultValue("Text"), Editor(typeof(NameParserEditor), typeof(UITypeEditor))]
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public string Text { get; set; }
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[DefaultValue(ContentAlignment.TopLeft), TypeConverter(typeof(EnumProperNameConverter))]
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public ContentAlignment Placement { get; set; }
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[DefaultValue(typeof(Point), "0, 0")]
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public Point Offset { get; set; }
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[DefaultValue(0)]
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public int Angle { get; set; }
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[DefaultValue(false), Description("If text size bigger than source image then don't draw it.")]
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public bool AutoHide { get; set; }
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private FontSafe fontSafe = 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, 36pt")]
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public Font Font
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{
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get
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{
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return fontSafe.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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fontSafe.SetFont(value);
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}
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}
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}
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[DefaultValue(typeof(Color), "235, 235, 235"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
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public Color Color { get; set; }
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[DefaultValue(false)]
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public bool UseGradient { get; set; }
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[Editor(typeof(GradientEditor), typeof(UITypeEditor))]
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public GradientInfo Gradient { get; set; }
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[DefaultValue(false)]
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public bool Outline { get; set; }
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[DefaultValue(5)]
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public int OutlineSize { get; set; }
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[DefaultValue(typeof(Color), "235, 0, 0"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
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public Color OutlineColor { get; set; }
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[DefaultValue(false)]
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public bool OutlineUseGradient { get; set; }
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[Editor(typeof(GradientEditor), typeof(UITypeEditor))]
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public GradientInfo OutlineGradient { get; set; }
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[DefaultValue(false)]
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public bool Shadow { get; set; }
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[DefaultValue(typeof(Point), "0, 5")]
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public Point ShadowOffset { get; set; }
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[DefaultValue(typeof(Color), "125, 0, 0, 0"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
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public Color ShadowColor { get; set; }
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[DefaultValue(false)]
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public bool ShadowUseGradient { get; set; }
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[Editor(typeof(GradientEditor), typeof(UITypeEditor))]
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public GradientInfo ShadowGradient { get; set; }
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public DrawTextEx()
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{
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this.ApplyDefaultPropertyValues();
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Gradient = AddDefaultGradient();
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OutlineGradient = AddDefaultGradient();
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ShadowGradient = AddDefaultGradient();
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}
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private GradientInfo AddDefaultGradient()
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{
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GradientInfo gradientInfo = new GradientInfo();
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gradientInfo.Type = LinearGradientMode.Horizontal;
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switch (RandomFast.Next(0, 2))
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{
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case 0:
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gradientInfo.Colors.Add(new GradientStop(Color.FromArgb(0, 187, 138), 0f));
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gradientInfo.Colors.Add(new GradientStop(Color.FromArgb(0, 105, 163), 100f));
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break;
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case 1:
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gradientInfo.Colors.Add(new GradientStop(Color.FromArgb(255, 3, 135), 0f));
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gradientInfo.Colors.Add(new GradientStop(Color.FromArgb(255, 143, 3), 100f));
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break;
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case 2:
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gradientInfo.Colors.Add(new GradientStop(Color.FromArgb(184, 11, 195), 0f));
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gradientInfo.Colors.Add(new GradientStop(Color.FromArgb(98, 54, 255), 100f));
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break;
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}
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return gradientInfo;
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}
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public override Bitmap Apply(Bitmap bmp)
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{
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if (string.IsNullOrEmpty(Text))
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{
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return bmp;
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}
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using (Font font = Font)
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{
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if (font == null || font.Size < 1)
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{
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return bmp;
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}
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NameParser parser = new NameParser(NameParserType.Text);
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parser.ImageWidth = bmp.Width;
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parser.ImageHeight = bmp.Height;
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string parsedText = parser.Parse(Text);
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using (Graphics g = Graphics.FromImage(bmp))
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using (GraphicsPath gp = new GraphicsPath())
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{
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g.SmoothingMode = SmoothingMode.HighQuality;
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g.PixelOffsetMode = PixelOffsetMode.Half;
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gp.FillMode = FillMode.Winding;
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float emSize = g.DpiY * font.SizeInPoints / 72;
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gp.AddString(parsedText, font.FontFamily, (int)font.Style, emSize, Point.Empty, StringFormat.GenericDefault);
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if (Angle != 0)
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{
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using (Matrix matrix = new Matrix())
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{
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matrix.Rotate(Angle);
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gp.Transform(matrix);
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}
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}
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RectangleF pathRect = gp.GetBounds();
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if (pathRect.IsEmpty)
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{
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return bmp;
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}
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Size textSize = pathRect.Size.ToSize().Offset(1);
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Point textPosition = Helpers.GetPosition(Placement, Offset, bmp.Size, textSize);
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Rectangle textRectangle = new Rectangle(textPosition, textSize);
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if (AutoHide && !new Rectangle(0, 0, bmp.Width, bmp.Height).Contains(textRectangle))
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{
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return bmp;
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}
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using (Matrix matrix = new Matrix())
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{
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matrix.Translate(textRectangle.X - pathRect.X, textRectangle.Y - pathRect.Y);
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gp.Transform(matrix);
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}
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// Draw text shadow
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if (Shadow && ((!ShadowUseGradient && ShadowColor.A > 0) || (ShadowUseGradient && ShadowGradient.IsVisible)))
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{
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using (Matrix matrix = new Matrix())
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{
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matrix.Translate(ShadowOffset.X, ShadowOffset.Y);
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gp.Transform(matrix);
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if (Outline && OutlineSize > 0)
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{
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if (ShadowUseGradient)
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{
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using (LinearGradientBrush textShadowBrush = ShadowGradient.GetGradientBrush(
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Rectangle.Round(textRectangle).Offset(OutlineSize + 1).LocationOffset(ShadowOffset)))
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using (Pen textShadowPen = new Pen(textShadowBrush, OutlineSize) { LineJoin = LineJoin.Round })
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{
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g.DrawPath(textShadowPen, gp);
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}
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}
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else
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{
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using (Pen textShadowPen = new Pen(ShadowColor, OutlineSize) { LineJoin = LineJoin.Round })
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{
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g.DrawPath(textShadowPen, gp);
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}
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}
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}
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else
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{
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if (ShadowUseGradient)
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{
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using (Brush textShadowBrush = ShadowGradient.GetGradientBrush(
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Rectangle.Round(textRectangle).Offset(1).LocationOffset(ShadowOffset)))
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{
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g.FillPath(textShadowBrush, gp);
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}
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}
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else
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{
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using (Brush textShadowBrush = new SolidBrush(ShadowColor))
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{
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g.FillPath(textShadowBrush, gp);
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}
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}
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}
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matrix.Reset();
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matrix.Translate(-ShadowOffset.X, -ShadowOffset.Y);
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gp.Transform(matrix);
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}
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}
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// Draw text outline
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if (Outline && OutlineSize > 0)
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{
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if (OutlineUseGradient)
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{
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if (OutlineGradient.IsVisible)
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{
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using (LinearGradientBrush textOutlineBrush = OutlineGradient.GetGradientBrush(Rectangle.Round(textRectangle).Offset(OutlineSize + 1)))
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using (Pen textOutlinePen = new Pen(textOutlineBrush, OutlineSize) { LineJoin = LineJoin.Round })
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{
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g.DrawPath(textOutlinePen, gp);
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}
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}
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}
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else if (OutlineColor.A > 0)
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{
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using (Pen textOutlinePen = new Pen(OutlineColor, OutlineSize) { LineJoin = LineJoin.Round })
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{
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g.DrawPath(textOutlinePen, gp);
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}
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}
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}
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// Draw text
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if (UseGradient)
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{
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if (Gradient.IsVisible)
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{
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using (Brush textBrush = Gradient.GetGradientBrush(Rectangle.Round(textRectangle).Offset(1)))
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{
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g.FillPath(textBrush, gp);
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}
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}
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}
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else if (Color.A > 0)
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{
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using (Brush textBrush = new SolidBrush(Color))
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{
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g.FillPath(textBrush, gp);
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}
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}
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}
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return bmp;
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}
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}
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}
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} |