2016-08-25 03:34:02 +12:00
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#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) 2007-2016 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 SpeechBalloonDrawingShape : TextDrawingShape
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{
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public override ShapeType ShapeType { get; } = ShapeType.DrawingSpeechBalloon;
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private Point tailPosition;
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public Point TailPosition
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{
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get
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{
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return tailPosition;
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}
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private set
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{
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tailPosition = value;
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TailNode.Position = tailPosition;
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}
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}
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public bool TailVisible => !Rectangle.Contains(TailPosition);
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internal ResizeNode TailNode => Manager.ResizeNodes[(int)NodePosition.Extra];
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// If rectangle average size is 100px then tail width will be 30px
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protected const float TailWidthMultiplier = 0.3f;
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public override void OnCreated()
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{
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base.OnCreated();
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TailPosition = Rectangle.Location.Add(0, Rectangle.Height + 30);
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}
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public override void OnNodeVisible()
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{
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base.OnNodeVisible();
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TailNode.Position = TailPosition;
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TailNode.Shape = NodeShape.Circle;
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TailNode.Visible = true;
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}
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public override void OnNodeUpdate()
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{
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base.OnNodeUpdate();
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if (TailNode.IsDragging)
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{
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TailPosition = InputManager.MousePosition0Based;
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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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TailPosition = TailPosition.Add(x, y);
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}
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public override void OnDraw(Graphics g)
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{
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if (Rectangle.Width > 10 && Rectangle.Height > 10)
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{
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GraphicsPath gpTail = null;
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if (TailVisible)
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{
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gpTail = CreateTailPath();
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}
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if (FillColor.A > 0)
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{
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using (Brush brush = new SolidBrush(FillColor))
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{
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g.FillRectangle(brush, Rectangle);
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}
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}
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if (gpTail != null)
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{
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g.SmoothingMode = SmoothingMode.HighQuality;
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if (FillColor.A > 0)
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{
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g.ExcludeClip(Rectangle);
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using (Brush brush = new SolidBrush(FillColor))
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{
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g.FillPath(brush, gpTail);
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}
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g.ResetClip();
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}
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if (BorderSize > 0 && BorderColor.A > 0)
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{
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g.ExcludeClip(Rectangle.Offset(-1));
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using (Pen pen = new Pen(BorderColor, BorderSize))
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{
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g.DrawPath(pen, gpTail);
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}
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g.ResetClip();
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}
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g.SmoothingMode = SmoothingMode.None;
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}
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if (BorderSize > 0 && BorderColor.A > 0)
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{
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if (gpTail != null)
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{
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using (Region region = new Region(gpTail))
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{
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g.ExcludeClip(region);
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}
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}
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Rectangle rect = Rectangle.Offset(BorderSize - 1);
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using (Pen pen = new Pen(BorderColor, BorderSize) { Alignment = PenAlignment.Inset })
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{
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g.DrawRectangleProper(pen, rect);
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}
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g.ResetClip();
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}
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if (gpTail != null)
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{
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gpTail.Dispose();
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}
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DrawText(g);
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}
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}
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protected GraphicsPath CreateTailPath()
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{
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GraphicsPath gpTail = new GraphicsPath();
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Point center = Rectangle.Center();
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int rectAverageSize = (Rectangle.Width + Rectangle.Height) / 2;
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int tailWidth = (int)(TailWidthMultiplier * rectAverageSize);
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tailWidth = Math.Min(Math.Min(tailWidth, Rectangle.Width), Rectangle.Height);
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int tailOrigin = tailWidth / 2;
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int tailLength = (int)MathHelpers.Distance(center, TailPosition);
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gpTail.AddLine(0, -tailOrigin, 0, tailOrigin);
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gpTail.AddLine(0, tailOrigin, tailLength, 0);
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gpTail.CloseFigure();
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using (Matrix matrix = new Matrix())
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{
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matrix.Translate(center.X, center.Y);
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float tailDegree = MathHelpers.LookAtDegree(center, TailPosition);
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matrix.Rotate(tailDegree);
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gpTail.Transform(matrix);
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}
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return gpTail;
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}
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}
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}
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