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https://github.com/ShareX/ShareX.git
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136 lines
No EOL
5.2 KiB
C#
136 lines
No EOL
5.2 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2013 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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using Greenshot.Drawing.Fields;
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using Greenshot.Helpers;
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using Greenshot.Plugin.Drawing;
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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 Greenshot.Drawing
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{
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/// <summary>
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/// Description of EllipseContainer.
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/// </summary>
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[Serializable()]
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public class EllipseContainer : DrawableContainer
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{
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public EllipseContainer(Surface parent)
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: base(parent)
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{
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AddField(GetType(), FieldType.LINE_THICKNESS, 2);
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AddField(GetType(), FieldType.LINE_COLOR, Color.Red);
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AddField(GetType(), FieldType.FILL_COLOR, Color.Transparent);
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AddField(GetType(), FieldType.SHADOW, true);
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}
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public override void Draw(Graphics graphics, RenderMode renderMode)
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{
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graphics.SmoothingMode = SmoothingMode.HighQuality;
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graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
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graphics.CompositingQuality = CompositingQuality.HighQuality;
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graphics.PixelOffsetMode = PixelOffsetMode.None;
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int lineThickness = GetFieldValueAsInt(FieldType.LINE_THICKNESS);
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Color lineColor = GetFieldValueAsColor(FieldType.LINE_COLOR);
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Color fillColor = GetFieldValueAsColor(FieldType.FILL_COLOR);
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bool shadow = GetFieldValueAsBool(FieldType.SHADOW);
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bool lineVisible = (lineThickness > 0 && Colors.IsVisible(lineColor));
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// draw shadow before anything else
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if (shadow && (lineVisible || Colors.IsVisible(fillColor)))
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{
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int basealpha = 100;
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int alpha = basealpha;
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int steps = 5;
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int currentStep = lineVisible ? 1 : 0;
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while (currentStep <= steps)
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{
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using (Pen shadowPen = new Pen(Color.FromArgb(alpha, 100, 100, 100)))
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{
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shadowPen.Width = lineVisible ? lineThickness : 1;
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Rectangle shadowRect = GuiRectangle.GetGuiRectangle(Left + currentStep, Top + currentStep, Width, Height);
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graphics.DrawEllipse(shadowPen, shadowRect);
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currentStep++;
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alpha = alpha - basealpha / steps;
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}
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}
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}
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//draw the original shape
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Rectangle rect = GuiRectangle.GetGuiRectangle(Left, Top, Width, Height);
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if (Colors.IsVisible(fillColor))
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{
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using (Brush brush = new SolidBrush(fillColor))
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{
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graphics.FillEllipse(brush, rect);
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}
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}
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if (lineVisible)
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{
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using (Pen pen = new Pen(lineColor, lineThickness))
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{
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graphics.DrawEllipse(pen, rect);
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}
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}
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}
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public override bool Contains(int x, int y)
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{
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double xDistanceFromCenter = x - (Left + Width / 2);
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double yDistanceFromCenter = y - (Top + Height / 2);
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// ellipse: x^2/a^2 + y^2/b^2 = 1
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return Math.Pow(xDistanceFromCenter, 2) / Math.Pow(Width / 2, 2) + Math.Pow(yDistanceFromCenter, 2) / Math.Pow(Height / 2, 2) < 1;
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}
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public override bool ClickableAt(int x, int y)
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{
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Rectangle rect = GuiRectangle.GetGuiRectangle(Left, Top, Width, Height);
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int lineThickness = GetFieldValueAsInt(FieldType.LINE_THICKNESS) + 10;
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Color fillColor = GetFieldValueAsColor(FieldType.FILL_COLOR);
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// If we clicked inside the rectangle and it's visible we are clickable at.
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if (!Color.Transparent.Equals(fillColor))
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{
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if (Contains(x, y))
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{
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return true;
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}
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}
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// check the rest of the lines
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if (lineThickness > 0)
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{
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using (Pen pen = new Pen(Color.White, lineThickness))
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{
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using (GraphicsPath path = new GraphicsPath())
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{
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path.AddEllipse(rect);
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return path.IsOutlineVisible(x, y, pen);
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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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return false;
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}
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}
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}
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} |