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103 lines
4.2 KiB
C#
103 lines
4.2 KiB
C#
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/*
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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 GreenshotPlugin.Core;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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namespace Greenshot.Drawing.Filters
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{
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[Serializable()]
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public class PixelizationFilter : AbstractFilter
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{
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public PixelizationFilter(DrawableContainer parent)
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: base(parent)
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{
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AddField(GetType(), FieldType.PIXEL_SIZE, 5);
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}
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public override void Apply(Graphics graphics, Bitmap applyBitmap, Rectangle rect, RenderMode renderMode)
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{
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int pixelSize = GetFieldValueAsInt(FieldType.PIXEL_SIZE);
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Rectangle applyRect = ImageHelper.CreateIntersectRectangle(applyBitmap.Size, rect, Invert);
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if (pixelSize <= 1 || rect.Width == 0 || rect.Height == 0)
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{
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// Nothing to do
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return;
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}
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if (rect.Width < pixelSize)
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{
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pixelSize = rect.Width;
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}
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if (rect.Height < pixelSize)
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{
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pixelSize = rect.Height;
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}
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using (IFastBitmap dest = FastBitmap.CreateCloneOf(applyBitmap, rect))
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{
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using (IFastBitmap src = FastBitmap.Create(applyBitmap, rect))
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{
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List<Color> colors = new List<Color>();
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int halbPixelSize = pixelSize / 2;
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for (int y = src.Top - halbPixelSize; y < src.Bottom + halbPixelSize; y = y + pixelSize)
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{
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for (int x = src.Left - halbPixelSize; x <= src.Right + halbPixelSize; x = x + pixelSize)
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{
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colors.Clear();
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for (int yy = y; yy < y + pixelSize; yy++)
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{
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if (yy >= src.Top && yy < src.Bottom)
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{
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for (int xx = x; xx < x + pixelSize; xx++)
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{
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if (xx >= src.Left && xx < src.Right)
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{
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colors.Add(src.GetColorAt(xx, yy));
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}
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}
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}
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}
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Color currentAvgColor = Colors.Mix(colors);
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for (int yy = y; yy <= y + pixelSize; yy++)
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{
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if (yy >= src.Top && yy < src.Bottom)
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{
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for (int xx = x; xx <= x + pixelSize; xx++)
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{
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if (xx >= src.Left && xx < src.Right)
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{
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dest.SetColorAt(xx, yy, currentAvgColor);
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}
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}
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}
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}
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}
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}
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}
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dest.DrawTo(graphics, rect.Location);
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}
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}
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}
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}
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