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256 lines
No EOL
7.8 KiB
C#
256 lines
No EOL
7.8 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) 2007-2020 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;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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namespace ShareX.ScreenCaptureLib
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{
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public class LineDrawingShape : BaseDrawingShape
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{
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public const int MaximumCenterPointCount = 5;
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private const int MinimumCollisionSize = 10;
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public override ShapeType ShapeType { get; } = ShapeType.DrawingLine;
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public Point[] Points { get; private set; } = new Point[2];
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public bool CenterNodeActive { get; private set; }
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public int CenterPointCount { get; private set; }
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public override bool IsValidShape => Rectangle.Width >= Options.MinimumSize || Rectangle.Height >= Options.MinimumSize;
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protected override void UseLightResizeNodes()
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{
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ChangeNodeShape(NodeShape.Circle);
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}
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private void AdjustPoints(int centerPointCount)
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{
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Point[] newPoints = new Point[2 + centerPointCount];
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if (Points != null)
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{
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newPoints[0] = Points[0];
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newPoints[newPoints.Length - 1] = Points[Points.Length - 1];
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}
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Points = newPoints;
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}
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private void AutoPositionCenterPoints()
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{
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if (!CenterNodeActive)
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{
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for (int i = 1; i < Points.Length - 1; i++)
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{
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Points[i] = new Point((int)MathHelpers.Lerp(Points[0].X, Points[Points.Length - 1].X, i / (CenterPointCount + 1f)),
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(int)MathHelpers.Lerp(Points[0].Y, Points[Points.Length - 1].Y, i / (CenterPointCount + 1f)));
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}
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}
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}
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public override void OnConfigLoad()
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{
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base.OnConfigLoad();
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int previousCenterPointCount = CenterPointCount;
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CenterPointCount = AnnotationOptions.LineCenterPointCount.Clamp(0, MaximumCenterPointCount);
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if (CenterPointCount != previousCenterPointCount)
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{
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AdjustPoints(CenterPointCount);
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CenterNodeActive = false;
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AutoPositionCenterPoints();
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}
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if (Manager.NodesVisible)
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{
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OnNodeVisible();
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}
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}
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public override void OnConfigSave()
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{
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base.OnConfigSave();
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AnnotationOptions.LineCenterPointCount = CenterPointCount;
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}
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public override void OnUpdate()
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{
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base.OnUpdate();
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if (Manager.IsCreating)
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{
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Points[0] = StartPosition;
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Points[Points.Length - 1] = EndPosition;
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}
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else
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{
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AutoPositionCenterPoints();
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CalculateRectangle();
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}
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}
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private void CalculateRectangle()
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{
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Rectangle = Points.CreateRectangle();
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if (Rectangle.Width < MinimumCollisionSize)
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{
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Rectangle = new Rectangle(Rectangle.X - (MinimumCollisionSize / 2), Rectangle.Y, Rectangle.Width + MinimumCollisionSize, Rectangle.Height);
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}
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if (Rectangle.Height < MinimumCollisionSize)
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{
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Rectangle = new Rectangle(Rectangle.X, Rectangle.Y - (MinimumCollisionSize / 2), Rectangle.Width, Rectangle.Height + MinimumCollisionSize);
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}
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}
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public override void OnDraw(Graphics g)
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{
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DrawLine(g);
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}
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protected void DrawLine(Graphics g)
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{
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int borderSize = Math.Max(BorderSize, 1);
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if (Shadow)
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{
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Point[] shadowPoints = new Point[Points.Length];
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for (int i = 0; i < shadowPoints.Length; i++)
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{
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shadowPoints[i] = Points[i].Add(ShadowOffset);
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}
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DrawLine(g, ShadowColor, borderSize, shadowPoints);
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}
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DrawLine(g, BorderColor, borderSize, Points);
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}
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protected void DrawLine(Graphics g, Color borderColor, int borderSize, Point[] points)
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{
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if (borderSize > 0 && borderColor.A > 0)
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{
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g.SmoothingMode = SmoothingMode.HighQuality;
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if (borderSize.IsEvenNumber())
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{
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g.PixelOffsetMode = PixelOffsetMode.Half;
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}
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using (Pen pen = CreatePen(borderColor, borderSize))
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{
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if (CenterNodeActive && points.Length > 2)
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{
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g.DrawCurve(pen, points);
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}
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else
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{
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g.DrawLine(pen, points[0], points[points.Length - 1]);
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}
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}
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g.SmoothingMode = SmoothingMode.None;
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g.PixelOffsetMode = PixelOffsetMode.Default;
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}
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}
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protected virtual Pen CreatePen(Color borderColor, int borderSize)
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{
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return new Pen(borderColor, borderSize)
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{
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StartCap = LineCap.Round,
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EndCap = LineCap.Round,
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LineJoin = LineJoin.Round
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};
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}
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public override void Move(int x, int y)
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{
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base.Move(x, y);
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for (int i = 0; i < Points.Length; i++)
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{
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Points[i] = Points[i].Add(x, y);
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}
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}
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public override void Resize(int x, int y, bool fromBottomRight)
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{
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if (fromBottomRight)
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{
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Points[Points.Length - 1] = Points[Points.Length - 1].Add(x, y);
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}
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else
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{
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Points[0] = Points[0].Add(x, y);
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}
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}
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public override void OnNodeVisible()
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{
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for (int i = 0; i < Manager.ResizeNodes.Length; i++)
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{
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Manager.ResizeNodes[i].Visible = i < Points.Length;
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}
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}
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public override void OnNodeUpdate()
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{
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for (int i = 0; i < Points.Length; i++)
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{
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if (Manager.ResizeNodes[i].IsDragging)
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{
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Manager.IsResizing = true;
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if (i > 0 && i < Points.Length - 1)
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{
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CenterNodeActive = true;
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}
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Points[i] = InputManager.ClientMousePosition;
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}
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}
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}
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public override void OnNodePositionUpdate()
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{
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for (int i = 0; i < Points.Length; i++)
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{
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Manager.ResizeNodes[i].Position = Points[i];
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if (i < Points.Length - 1)
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{
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Manager.ResizeNodes[i].Visible = !Manager.ResizeNodes[i].Rectangle.IntersectsWith(Manager.ResizeNodes[Points.Length - 1].Rectangle);
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}
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}
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}
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}
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} |