#region License Information (GPL v3)
/*
ShareX - A program that allows you to take screenshots and share any file type
Copyright (c) 2007-2016 ShareX Team
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Optionally you can also view the license at .
*/
#endregion License Information (GPL v3)
#region License Information (Greenshot)
/*
* Greenshot - a free and open source screenshot tool
* Copyright (C) 2007-2013 Thomas Braun, Jens Klingen, Robin Krom
*
* For more information see: http://getgreenshot.org/
* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
#endregion License Information (Greenshot)
using Greenshot;
using Greenshot.Drawing;
using Greenshot.IniFile;
using Greenshot.Plugin;
using GreenshotPlugin.Core;
using GreenshotPlugin.UnmanagedHelpers;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
namespace ShareX.HelpersLib
{
public static class ImageHelpers
{
public static Image ResizeImage(Image img, Size size)
{
return ResizeImage(img, size.Width, size.Height);
}
public static Image ResizeImage(Image img, int width, int height)
{
if (width < 1 || height < 1 || (img.Width == width && img.Height == height))
{
return img;
}
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);
bmp.SetResolution(img.HorizontalResolution, img.VerticalResolution);
using (img)
using (Graphics g = Graphics.FromImage(bmp))
{
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.SmoothingMode = SmoothingMode.HighQuality;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.CompositingQuality = CompositingQuality.HighQuality;
g.CompositingMode = CompositingMode.SourceOver;
using (ImageAttributes ia = new ImageAttributes())
{
ia.SetWrapMode(WrapMode.TileFlipXY);
g.DrawImage(img, new Rectangle(0, 0, width, height), 0, 0, img.Width, img.Height, GraphicsUnit.Pixel, ia);
}
}
return bmp;
}
public static Image ResizeImageByPercentage(Image img, float percentage)
{
return ResizeImageByPercentage(img, percentage, percentage);
}
public static Image ResizeImageByPercentage(Image img, float percentageWidth, float percentageHeight)
{
int width = (int)(percentageWidth / 100 * img.Width);
int height = (int)(percentageHeight / 100 * img.Height);
return ResizeImage(img, width, height);
}
public static Image ResizeImage(Image img, Size size, bool allowEnlarge, bool centerImage = true)
{
return ResizeImage(img, size.Width, size.Height, allowEnlarge, centerImage);
}
public static Image ResizeImage(Image img, int width, int height, bool allowEnlarge, bool centerImage = true)
{
return ResizeImage(img, width, height, allowEnlarge, centerImage, Color.Transparent);
}
public static Image ResizeImage(Image img, int width, int height, bool allowEnlarge, bool centerImage, Color backColor)
{
double ratio;
int newWidth, newHeight;
if (!allowEnlarge && img.Width <= width && img.Height <= height)
{
ratio = 1.0;
newWidth = img.Width;
newHeight = img.Height;
}
else
{
double ratioX = (double)width / img.Width;
double ratioY = (double)height / img.Height;
ratio = ratioX < ratioY ? ratioX : ratioY;
newWidth = (int)(img.Width * ratio);
newHeight = (int)(img.Height * ratio);
}
int newX = 0;
int newY = 0;
if (centerImage)
{
newX += (int)((width - (img.Width * ratio)) / 2);
newY += (int)((height - (img.Height * ratio)) / 2);
}
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);
bmp.SetResolution(img.HorizontalResolution, img.VerticalResolution);
using (Graphics g = Graphics.FromImage(bmp))
using (img)
{
g.Clear(backColor);
g.SetHighQuality();
g.DrawImage(img, newX, newY, newWidth, newHeight);
}
return bmp;
}
public static Image ResizeImageLimit(Image img, Size size)
{
return ResizeImageLimit(img, size.Width, size.Height);
}
/// If image size bigger than "size" then resize it and keep aspect ratio else return image.
public static Image ResizeImageLimit(Image img, int width, int height)
{
if (img.Width <= width && img.Height <= height)
{
return img;
}
int newWidth, newHeight;
double ratioX = (double)width / img.Width;
double ratioY = (double)height / img.Height;
if (ratioX < ratioY)
{
newWidth = width;
newHeight = (int)(img.Height * ratioX);
}
else
{
newWidth = (int)(img.Width * ratioY);
newHeight = height;
}
return ResizeImage(img, newWidth, newHeight);
}
public static Image ResizeImageLimit(Image img, int maxPixels)
{
double ratio = (double)img.Width / img.Height;
double x = Math.Sqrt(maxPixels / ratio);
int width, height;
if (ratio > 1)
{
width = (int)(ratio * x);
height = (int)(width / ratio);
}
else
{
height = (int)(ratio * x);
width = (int)(height / ratio);
}
return ResizeImage(img, width, height);
}
public static Image CropImage(Image img, Rectangle rect)
{
if (img != null && rect.X >= 0 && rect.Y >= 0 && rect.Width > 0 && rect.Height > 0 && new Rectangle(0, 0, img.Width, img.Height).Contains(rect))
{
using (Bitmap bmp = new Bitmap(img))
{
return bmp.Clone(rect, bmp.PixelFormat);
}
}
return null;
}
public static Bitmap CropBitmap(Bitmap bmp, Rectangle rect)
{
if (bmp != null && rect.X >= 0 && rect.Y >= 0 && rect.Width > 0 && rect.Height > 0 && new Rectangle(0, 0, bmp.Width, bmp.Height).Contains(rect))
{
return bmp.Clone(rect, bmp.PixelFormat);
}
return null;
}
public static Image CropImage(Image img, Rectangle rect, GraphicsPath gp)
{
if (img != null && rect.Width > 0 && rect.Height > 0 && gp != null)
{
Bitmap bmp = new Bitmap(rect.Width, rect.Height);
bmp.SetResolution(img.HorizontalResolution, img.VerticalResolution);
using (Graphics g = Graphics.FromImage(bmp))
{
g.SetHighQuality();
using (Region region = new Region(gp))
{
g.Clip = region;
g.DrawImage(img, new Rectangle(0, 0, rect.Width, rect.Height), rect, GraphicsUnit.Pixel);
}
}
return bmp;
}
return null;
}
public static Image DrawOutline(Image img, GraphicsPath gp)
{
if (img != null && gp != null)
{
Bitmap bmp = new Bitmap(img);
using (Graphics g = Graphics.FromImage(bmp))
{
g.SmoothingMode = SmoothingMode.HighQuality;
gp.WindingModeOutline();
g.DrawPath(Pens.Black, gp);
}
return bmp;
}
return null;
}
public static Bitmap AddSkew(Image img, int x, int y)
{
Bitmap result = img.CreateEmptyBitmap(Math.Abs(x), Math.Abs(y));
using (Graphics g = Graphics.FromImage(result))
using (img)
{
g.SetHighQuality();
int startX = -Math.Min(0, x);
int startY = -Math.Min(0, y);
int endX = Math.Max(0, x);
int endY = Math.Max(0, y);
Point[] destinationPoints = { new Point(startX, startY), new Point(startX + img.Width - 1, endY), new Point(endX, startY + img.Height - 1) };
g.DrawImage(img, destinationPoints);
}
return result;
}
public static Image AddCanvas(Image img, Padding margin)
{
Bitmap bmp = img.CreateEmptyBitmap(margin.Horizontal, margin.Vertical);
using (Graphics g = Graphics.FromImage(bmp))
using (img)
{
g.SetHighQuality();
g.DrawImage(img, margin.Left, margin.Top, img.Width, img.Height);
}
return bmp;
}
public static Image RoundedCorners(Image img, int cornerRadius)
{
Bitmap bmp = img.CreateEmptyBitmap();
using (Graphics g = Graphics.FromImage(bmp))
using (img)
{
g.SmoothingMode = SmoothingMode.AntiAlias;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
using (GraphicsPath gp = new GraphicsPath())
{
gp.AddRoundedRectangle(new RectangleF(0, 0, img.Width, img.Height), cornerRadius);
using (TextureBrush brush = new TextureBrush(img))
{
g.FillPath(brush, gp);
}
}
}
return bmp;
}
public static Image Outline(Image img, int borderSize, Color borderColor)
{
Bitmap result = img.CreateEmptyBitmap(borderSize * 2, borderSize * 2);
ColorMatrix maskMatrix = new ColorMatrix();
maskMatrix.Matrix00 = 0;
maskMatrix.Matrix11 = 0;
maskMatrix.Matrix22 = 0;
maskMatrix.Matrix33 = 1;
maskMatrix.Matrix40 = ((float)borderColor.R).Remap(0, 255, 0, 1);
maskMatrix.Matrix41 = ((float)borderColor.G).Remap(0, 255, 0, 1);
maskMatrix.Matrix42 = ((float)borderColor.B).Remap(0, 255, 0, 1);
using (img)
using (Image shadow = maskMatrix.Apply(img))
using (Graphics g = Graphics.FromImage(result))
{
for (int i = 0; i <= borderSize * 2; i++)
{
g.DrawImage(shadow, new Rectangle(i, 0, shadow.Width, shadow.Height));
g.DrawImage(shadow, new Rectangle(i, borderSize * 2, shadow.Width, shadow.Height));
g.DrawImage(shadow, new Rectangle(0, i, shadow.Width, shadow.Height));
g.DrawImage(shadow, new Rectangle(borderSize * 2, i, shadow.Width, shadow.Height));
}
g.DrawImage(img, new Rectangle(borderSize, borderSize, img.Width, img.Height));
}
return result;
}
public static Image DrawReflection(Image img, int percentage, int maxAlpha, int minAlpha, int offset, bool skew, int skewSize)
{
Bitmap reflection = AddReflection(img, percentage, maxAlpha, minAlpha);
if (skew)
{
reflection = AddSkew(reflection, skewSize, 0);
}
Bitmap result = new Bitmap(reflection.Width, img.Height + reflection.Height + offset);
using (Graphics g = Graphics.FromImage(result))
{
g.SetHighQuality();
g.DrawImage(img, 0, 0, img.Width, img.Height);
g.DrawImage(reflection, 0, img.Height + offset, reflection.Width, reflection.Height);
img.Dispose();
}
return result;
}
public static Bitmap AddReflection(Image img, int percentage, int maxAlpha, int minAlpha)
{
percentage = percentage.Between(1, 100);
maxAlpha = maxAlpha.Between(0, 255);
minAlpha = minAlpha.Between(0, 255);
Bitmap reflection;
using (Bitmap bitmapRotate = (Bitmap)img.Clone())
{
bitmapRotate.RotateFlip(RotateFlipType.RotateNoneFlipY);
reflection = bitmapRotate.Clone(new Rectangle(0, 0, bitmapRotate.Width, (int)(bitmapRotate.Height * ((float)percentage / 100))), PixelFormat.Format32bppArgb);
}
using (UnsafeBitmap unsafeBitmap = new UnsafeBitmap(reflection, true))
{
int alphaAdd = maxAlpha - minAlpha;
float reflectionHeight = reflection.Height - 1;
for (int y = 0; y < reflection.Height; ++y)
{
for (int x = 0; x < reflection.Width; ++x)
{
ColorBgra color = unsafeBitmap.GetPixel(x, y);
byte alpha = (byte)(maxAlpha - (alphaAdd * (y / reflectionHeight)));
if (color.Alpha > alpha)
{
color.Alpha = alpha;
unsafeBitmap.SetPixel(x, y, color);
}
}
}
}
return reflection;
}
public static Image DrawBorder(Image img, Color borderColor, int borderSize, BorderType borderType)
{
using (Pen borderPen = new Pen(borderColor, borderSize) { Alignment = PenAlignment.Inset })
{
return DrawBorder(img, borderPen, borderType);
}
}
public static Image DrawBorder(Image img, Color fromBorderColor, Color toBorderColor, LinearGradientMode gradientType, int borderSize, BorderType borderType)
{
int width = img.Width;
int height = img.Height;
if (borderType == BorderType.Outside)
{
width += borderSize * 2;
height += borderSize * 2;
}
using (LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, width, height), fromBorderColor, toBorderColor, gradientType))
using (Pen borderPen = new Pen(brush, borderSize) { Alignment = PenAlignment.Inset })
{
return DrawBorder(img, borderPen, borderType);
}
}
public static Image DrawBorder(Image img, Pen borderPen, BorderType borderType)
{
Bitmap bmp;
if (borderType == BorderType.Inside)
{
bmp = (Bitmap)img;
using (Graphics g = Graphics.FromImage(bmp))
{
g.DrawRectangleProper(borderPen, 0, 0, img.Width, img.Height);
}
}
else
{
int borderSize = (int)borderPen.Width;
bmp = img.CreateEmptyBitmap(borderSize * 2, borderSize * 2);
using (Graphics g = Graphics.FromImage(bmp))
using (img)
{
g.DrawRectangleProper(borderPen, 0, 0, bmp.Width, bmp.Height);
g.SetHighQuality();
g.DrawImage(img, borderSize, borderSize, img.Width, img.Height);
}
}
return bmp;
}
public static Bitmap FillBackground(Image img, Color color)
{
using (Brush brush = new SolidBrush(color))
{
return FillBackground(img, brush);
}
}
public static Bitmap FillBackground(Image img, Color fromColor, Color toColor, LinearGradientMode gradientType)
{
using (LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, img.Width, img.Height), fromColor, toColor, gradientType))
{
return FillBackground(img, brush);
}
}
public static Bitmap FillBackground(Image img, Brush brush)
{
Bitmap result = img.CreateEmptyBitmap();
using (Graphics g = Graphics.FromImage(result))
using (img)
{
g.FillRectangle(brush, 0, 0, result.Width, result.Height);
g.SetHighQuality();
g.DrawImage(img, 0, 0, result.Width, result.Height);
}
return result;
}
public static Image DrawCheckers(Image img)
{
return DrawCheckers(img, 10, Color.LightGray, Color.White);
}
public static Image DrawCheckers(Image img, int size, Color color1, Color color2)
{
Bitmap bmp = img.CreateEmptyBitmap();
using (Graphics g = Graphics.FromImage(bmp))
using (Image checker = CreateCheckers(size, color1, color2))
using (Brush checkerBrush = new TextureBrush(checker, WrapMode.Tile))
using (img)
{
g.FillRectangle(checkerBrush, new Rectangle(0, 0, bmp.Width, bmp.Height));
g.SetHighQuality();
g.DrawImage(img, 0, 0, img.Width, img.Height);
}
return bmp;
}
public static Image DrawCheckers(int width, int height)
{
Bitmap bmp = new Bitmap(width, height);
using (Graphics g = Graphics.FromImage(bmp))
using (Image checker = CreateCheckers())
using (Brush checkerBrush = new TextureBrush(checker, WrapMode.Tile))
{
g.FillRectangle(checkerBrush, new Rectangle(0, 0, bmp.Width, bmp.Height));
}
return bmp;
}
public static Image CreateCheckers()
{
return CreateCheckers(10, Color.LightGray, Color.White);
}
public static Image CreateCheckers(int size, Color color1, Color color2)
{
return CreateCheckers(size, size, color1, color2);
}
public static Image CreateCheckers(int width, int height, Color color1, Color color2)
{
Bitmap bmp = new Bitmap(width * 2, height * 2);
using (Graphics g = Graphics.FromImage(bmp))
using (Brush brush1 = new SolidBrush(color1))
using (Brush brush2 = new SolidBrush(color2))
{
g.FillRectangle(brush1, 0, 0, width, height);
g.FillRectangle(brush1, width, height, width, height);
g.FillRectangle(brush2, width, 0, width, height);
g.FillRectangle(brush2, 0, height, width, height);
}
return bmp;
}
public static void DrawTextWithOutline(Graphics g, string text, PointF position, Font font, Color textColor, Color borderColor, int borderSize = 2)
{
SmoothingMode tempMode = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.HighQuality;
using (GraphicsPath gp = new GraphicsPath())
{
using (StringFormat sf = new StringFormat())
{
gp.AddString(text, font.FontFamily, (int)font.Style, font.Size, position, sf);
}
using (Pen borderPen = new Pen(borderColor, borderSize) { LineJoin = LineJoin.Round })
{
g.DrawPath(borderPen, gp);
}
using (Brush textBrush = new SolidBrush(textColor))
{
g.FillPath(textBrush, gp);
}
}
g.SmoothingMode = tempMode;
}
public static void DrawTextWithShadow(Graphics g, string text, PointF position, Font font, Color textColor, Color shadowColor, int shadowOffset = 1)
{
using (Brush textBrush = new SolidBrush(textColor))
using (Brush shadowBrush = new SolidBrush(shadowColor))
{
DrawTextWithShadow(g, text, position, font, textBrush, shadowBrush, shadowOffset);
}
}
public static void DrawTextWithShadow(Graphics g, string text, PointF position, Font font, Brush textBrush, Brush shadowBrush, int shadowOffset = 1)
{
g.DrawString(text, font, shadowBrush, position.X + shadowOffset, position.Y + shadowOffset);
g.DrawString(text, font, textBrush, position.X, position.Y);
}
public static bool IsImagesEqual(Bitmap bmp1, Bitmap bmp2)
{
using (UnsafeBitmap unsafeBitmap1 = new UnsafeBitmap(bmp1))
using (UnsafeBitmap unsafeBitmap2 = new UnsafeBitmap(bmp2))
{
return unsafeBitmap1 == unsafeBitmap2;
}
}
public static bool AddMetadata(Image img, int id, string text)
{
PropertyItem pi;
try
{
pi = (PropertyItem)typeof(PropertyItem).GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, new Type[] { }, null).Invoke(null);
pi.Id = id;
pi.Len = text.Length + 1;
pi.Type = 2;
byte[] bytesText = Encoding.ASCII.GetBytes(text + " ");
bytesText[bytesText.Length - 1] = 0;
pi.Value = bytesText;
if (pi != null)
{
img.SetPropertyItem(pi);
return true;
}
}
catch (Exception e)
{
DebugHelper.WriteException(e, "Reflection fail");
}
return false;
}
public static void CopyMetadata(Image fromImage, Image toImage)
{
PropertyItem[] propertyItems = fromImage.PropertyItems;
foreach (PropertyItem pi in propertyItems)
{
try
{
toImage.SetPropertyItem(pi);
}
catch (Exception e)
{
DebugHelper.WriteException(e);
}
}
}
///
/// Method to rotate an Image object. The result can be one of three cases:
/// - upsizeOk = true: output image will be larger than the input and no clipping occurs
/// - upsizeOk = false & clipOk = true: output same size as input, clipping occurs
/// - upsizeOk = false & clipOk = false: output same size as input, image reduced, no clipping
///
/// Note that this method always returns a new Bitmap object, even if rotation is zero - in
/// which case the returned object is a clone of the input object.
///
/// input Image object, is not modified
/// angle of rotation, in degrees
/// see comments above
/// see comments above, not used if upsizeOk = true
/// new Bitmap object, may be larger than input image
public static Bitmap RotateImage(Image inputImage, float angleDegrees, bool upsize, bool clip)
{
// Test for zero rotation and return a clone of the input image
if (angleDegrees == 0f)
return (Bitmap)inputImage.Clone();
// Set up old and new image dimensions, assuming upsizing not wanted and clipping OK
int oldWidth = inputImage.Width;
int oldHeight = inputImage.Height;
int newWidth = oldWidth;
int newHeight = oldHeight;
float scaleFactor = 1f;
// If upsizing wanted or clipping not OK calculate the size of the resulting bitmap
if (upsize || !clip)
{
double angleRadians = angleDegrees * Math.PI / 180d;
double cos = Math.Abs(Math.Cos(angleRadians));
double sin = Math.Abs(Math.Sin(angleRadians));
newWidth = (int)Math.Round(oldWidth * cos + oldHeight * sin);
newHeight = (int)Math.Round(oldWidth * sin + oldHeight * cos);
}
// If upsizing not wanted and clipping not OK need a scaling factor
if (!upsize && !clip)
{
scaleFactor = Math.Min((float)oldWidth / newWidth, (float)oldHeight / newHeight);
newWidth = oldWidth;
newHeight = oldHeight;
}
// Create the new bitmap object.
Bitmap newBitmap = new Bitmap(newWidth, newHeight, PixelFormat.Format32bppArgb);
newBitmap.SetResolution(inputImage.HorizontalResolution, inputImage.VerticalResolution);
// Create the Graphics object that does the work
using (Graphics graphicsObject = Graphics.FromImage(newBitmap))
{
graphicsObject.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphicsObject.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphicsObject.SmoothingMode = SmoothingMode.HighQuality;
// Set up the built-in transformation matrix to do the rotation and maybe scaling
graphicsObject.TranslateTransform(newWidth / 2f, newHeight / 2f);
if (scaleFactor != 1f)
graphicsObject.ScaleTransform(scaleFactor, scaleFactor);
graphicsObject.RotateTransform(angleDegrees);
graphicsObject.TranslateTransform(-oldWidth / 2f, -oldHeight / 2f);
// Draw the result
graphicsObject.DrawImage(inputImage, 0, 0, inputImage.Width, inputImage.Height);
}
return newBitmap;
}
public static Image AnnotateImage(Image img, string imgPath, bool allowSave, string configPath,
Action clipboardCopyRequested,
Action imageUploadRequested,
Action imageSaveRequested,
Func imageSaveAsRequested,
Action printImageRequested)
{
if (!IniConfig.isInitialized)
{
IniConfig.AllowSave = allowSave;
IniConfig.Init(configPath);
}
using (Image cloneImage = img != null ? (Image)img.Clone() : LoadImage(imgPath))
using (ICapture capture = new Capture { Image = cloneImage })
using (Surface surface = new Surface(capture))
using (ImageEditorForm editor = new ImageEditorForm(surface, true))
{
editor.IsTaskWork = img != null;
editor.SetImagePath(imgPath);
editor.ClipboardCopyRequested += clipboardCopyRequested;
editor.ImageUploadRequested += imageUploadRequested;
editor.ImageSaveRequested += imageSaveRequested;
editor.ImageSaveAsRequested += imageSaveAsRequested;
editor.PrintImageRequested += printImageRequested;
DialogResult result = editor.ShowDialog();
if (result == DialogResult.OK && editor.IsTaskWork)
{
using (img)
{
return editor.GetImageForExport();
}
}
if (result == DialogResult.Abort)
{
return null;
}
}
return img;
}
public static Bitmap AddShadow(Image sourceImage, float opacity, int size)
{
return AddShadow(sourceImage, opacity, size, 1, Color.Black, new Point(0, 0));
}
public static Bitmap AddShadow(Image sourceImage, float opacity, int size, float darkness, Color color, Point offset)
{
Image shadowImage = null;
try
{
shadowImage = sourceImage.CreateEmptyBitmap(size * 2, size * 2);
ColorMatrix maskMatrix = new ColorMatrix();
maskMatrix.Matrix00 = 0;
maskMatrix.Matrix11 = 0;
maskMatrix.Matrix22 = 0;
maskMatrix.Matrix33 = opacity;
maskMatrix.Matrix40 = ((float)color.R).Remap(0, 255, 0, 1);
maskMatrix.Matrix41 = ((float)color.G).Remap(0, 255, 0, 1);
maskMatrix.Matrix42 = ((float)color.B).Remap(0, 255, 0, 1);
Rectangle shadowRectangle = new Rectangle(size, size, sourceImage.Width, sourceImage.Height);
maskMatrix.Apply(sourceImage, shadowImage, shadowRectangle);
if (size > 0)
{
Blur((Bitmap)shadowImage, size);
}
if (darkness > 1)
{
ColorMatrix alphaMatrix = new ColorMatrix();
alphaMatrix.Matrix33 = darkness;
Image shadowImage2 = alphaMatrix.Apply(shadowImage);
shadowImage.Dispose();
shadowImage = shadowImage2;
}
Bitmap result = shadowImage.CreateEmptyBitmap(Math.Abs(offset.X), Math.Abs(offset.Y));
using (Graphics g = Graphics.FromImage(result))
{
g.SetHighQuality();
g.DrawImage(shadowImage, Math.Max(0, offset.X), Math.Max(0, offset.Y), shadowImage.Width, shadowImage.Height);
g.DrawImage(sourceImage, Math.Max(size, -offset.X + size), Math.Max(size, -offset.Y + size), sourceImage.Width, sourceImage.Height);
}
return result;
}
finally
{
if (sourceImage != null) sourceImage.Dispose();
if (shadowImage != null) shadowImage.Dispose();
}
}
public static void Blur(Bitmap sourceImage, int radius)
{
if (GDIplus.isBlurPossible(radius))
{
GDIplus.ApplyBlur(sourceImage, new Rectangle(0, 0, sourceImage.Width, sourceImage.Height), radius, false);
}
else
{
ImageHelper.ApplyBoxBlur(sourceImage, radius);
}
}
public static Bitmap Pixelate(Bitmap sourceImage, int pixelSize)
{
pixelSize = Math.Min(pixelSize, sourceImage.Width);
pixelSize = Math.Min(pixelSize, sourceImage.Height);
Bitmap result = sourceImage.CreateEmptyBitmap();
using (IFastBitmap src = FastBitmap.Create(sourceImage, new Rectangle(0, 0, sourceImage.Width, sourceImage.Height)))
using (IFastBitmap dest = FastBitmap.Create(result))
{
List colors = new List();
int halbPixelSize = pixelSize / 2;
for (int y = src.Top - halbPixelSize; y < src.Bottom + halbPixelSize; y = y + pixelSize)
{
for (int x = src.Left - halbPixelSize; x <= src.Right + halbPixelSize; x = x + pixelSize)
{
colors.Clear();
for (int yy = y; yy < y + pixelSize; yy++)
{
if (yy >= src.Top && yy < src.Bottom)
{
for (int xx = x; xx < x + pixelSize; xx++)
{
if (xx >= src.Left && xx < src.Right)
{
colors.Add(src.GetColorAt(xx, yy));
}
}
}
}
Color currentAvgColor = ColorHelpers.Mix(colors);
for (int yy = y; yy <= y + pixelSize; yy++)
{
if (yy >= src.Top && yy < src.Bottom)
{
for (int xx = x; xx <= x + pixelSize; xx++)
{
if (xx >= src.Left && xx < src.Right)
{
dest.SetColorAt(xx, yy, currentAvgColor);
}
}
}
}
}
}
}
return result;
}
public static Image CreateTornEdge(Image sourceImage, int toothHeight, int horizontalToothRange, int verticalToothRange, AnchorStyles sides)
{
Image result = sourceImage.CreateEmptyBitmap();
using (GraphicsPath path = new GraphicsPath())
{
Random random = new Random();
int horizontalRegions = sourceImage.Width / horizontalToothRange;
int verticalRegions = sourceImage.Height / verticalToothRange;
Point previousEndingPoint = new Point(horizontalToothRange, random.Next(1, toothHeight));
Point newEndingPoint;
if (sides.HasFlag(AnchorStyles.Top))
{
for (int i = 0; i < horizontalRegions; i++)
{
int x = previousEndingPoint.X + horizontalToothRange;
int y = random.Next(1, toothHeight);
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
}
else
{
previousEndingPoint = new Point(0, 0);
newEndingPoint = new Point(sourceImage.Width, 0);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
if (sides.HasFlag(AnchorStyles.Right))
{
for (int i = 0; i < verticalRegions; i++)
{
int x = sourceImage.Width - random.Next(1, toothHeight);
int y = previousEndingPoint.Y + verticalToothRange;
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
}
else
{
previousEndingPoint = new Point(sourceImage.Width, 0);
newEndingPoint = new Point(sourceImage.Width, sourceImage.Height);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
if (sides.HasFlag(AnchorStyles.Bottom))
{
for (int i = 0; i < horizontalRegions; i++)
{
int x = previousEndingPoint.X - horizontalToothRange;
int y = sourceImage.Height - random.Next(1, toothHeight);
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
}
else
{
previousEndingPoint = new Point(sourceImage.Width, sourceImage.Height);
newEndingPoint = new Point(0, sourceImage.Height);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
if (sides.HasFlag(AnchorStyles.Left))
{
for (int i = 0; i < verticalRegions; i++)
{
int x = random.Next(1, toothHeight);
int y = previousEndingPoint.Y - verticalToothRange;
newEndingPoint = new Point(x, y);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
}
else
{
previousEndingPoint = new Point(0, sourceImage.Height);
newEndingPoint = new Point(0, 0);
path.AddLine(previousEndingPoint, newEndingPoint);
previousEndingPoint = newEndingPoint;
}
path.CloseFigure();
using (Graphics graphics = Graphics.FromImage(result))
{
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
// Draw the created figure with the original image by using a TextureBrush so we have anti-aliasing
using (Brush brush = new TextureBrush(sourceImage))
{
graphics.FillPath(brush, path);
}
}
}
return result;
}
public static Bitmap Sharpen(Image image, double strength)
{
using (Bitmap bitmap = (Bitmap)image)
{
if (bitmap != null)
{
Bitmap sharpenImage = bitmap.Clone() as Bitmap;
int width = image.Width;
int height = image.Height;
// Create sharpening filter.
const int filterSize = 5;
var filter = new double[,]
{
{-1, -1, -1, -1, -1},
{-1, 2, 2, 2, -1},
{-1, 2, 16, 2, -1},
{-1, 2, 2, 2, -1},
{-1, -1, -1, -1, -1}
};
double bias = 1.0 - strength;
double factor = strength / 16.0;
const int s = filterSize / 2;
var result = new Color[image.Width, image.Height];
// Lock image bits for read/write.
if (sharpenImage != null)
{
BitmapData pbits = sharpenImage.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
// Declare an array to hold the bytes of the bitmap.
int bytes = pbits.Stride * height;
var rgbValues = new byte[bytes];
// Copy the RGB values into the array.
Marshal.Copy(pbits.Scan0, rgbValues, 0, bytes);
int rgb;
// Fill the color array with the new sharpened color values.
for (int x = s; x < width - s; x++)
{
for (int y = s; y < height - s; y++)
{
double red = 0.0, green = 0.0, blue = 0.0;
for (int filterX = 0; filterX < filterSize; filterX++)
{
for (int filterY = 0; filterY < filterSize; filterY++)
{
int imageX = (x - s + filterX + width) % width;
int imageY = (y - s + filterY + height) % height;
rgb = imageY * pbits.Stride + 3 * imageX;
red += rgbValues[rgb + 2] * filter[filterX, filterY];
green += rgbValues[rgb + 1] * filter[filterX, filterY];
blue += rgbValues[rgb + 0] * filter[filterX, filterY];
}
rgb = y * pbits.Stride + 3 * x;
int r = Math.Min(Math.Max((int)(factor * red + (bias * rgbValues[rgb + 2])), 0), 255);
int g = Math.Min(Math.Max((int)(factor * green + (bias * rgbValues[rgb + 1])), 0), 255);
int b = Math.Min(Math.Max((int)(factor * blue + (bias * rgbValues[rgb + 0])), 0), 255);
result[x, y] = Color.FromArgb(r, g, b);
}
}
}
// Update the image with the sharpened pixels.
for (int x = s; x < width - s; x++)
{
for (int y = s; y < height - s; y++)
{
rgb = y * pbits.Stride + 3 * x;
rgbValues[rgb + 2] = result[x, y].R;
rgbValues[rgb + 1] = result[x, y].G;
rgbValues[rgb + 0] = result[x, y].B;
}
}
// Copy the RGB values back to the bitmap.
Marshal.Copy(rgbValues, 0, pbits.Scan0, bytes);
// Release image bits.
sharpenImage.UnlockBits(pbits);
}
return sharpenImage;
}
}
return null;
}
public static string OpenImageFileDialog()
{
string[] images = OpenImageFileDialog(false);
if (images != null && images.Length > 0)
{
return images[0];
}
return null;
}
public static string[] OpenImageFileDialog(bool multiselect)
{
using (OpenFileDialog ofd = new OpenFileDialog())
{
ofd.Filter = "Image files (*.png, *.jpg, *.jpeg, *.jpe, *.jfif, *.gif, *.bmp, *.tif, *.tiff)|*.png;*.jpg;*.jpeg;*.jpe;*.jfif;*.gif;*.bmp;*.tif;*.tiff|" +
"PNG (*.png)|*.png|JPEG (*.jpg, *.jpeg, *.jpe, *.jfif)|*.jpg;*.jpeg;*.jpe;*.jfif|GIF (*.gif)|*.gif|BMP (*.bmp)|*.bmp|TIFF (*.tif, *.tiff)|*.tif;*.tiff|" +
"All files (*.*)|*.*";
ofd.Multiselect = multiselect;
if (ofd.ShowDialog() == DialogResult.OK)
{
return ofd.FileNames;
}
}
return null;
}
public static ImageFormat GetImageFormat(string filePath)
{
ImageFormat imageFormat = ImageFormat.Png;
string ext = Helpers.GetFilenameExtension(filePath);
if (!string.IsNullOrEmpty(ext))
{
switch (ext)
{
default:
case "png":
imageFormat = ImageFormat.Png;
break;
case "jpg":
case "jpeg":
case "jpe":
case "jfif":
imageFormat = ImageFormat.Jpeg;
break;
case "gif":
imageFormat = ImageFormat.Gif;
break;
case "bmp":
imageFormat = ImageFormat.Bmp;
break;
case "tif":
case "tiff":
imageFormat = ImageFormat.Tiff;
break;
}
}
return imageFormat;
}
public static void SaveImage(Image img, string filePath)
{
img.Save(filePath, GetImageFormat(filePath));
}
public static string SaveImageFileDialog(Image img, string filePath = "")
{
using (SaveFileDialog sfd = new SaveFileDialog())
{
if (!string.IsNullOrEmpty(filePath))
{
string folder = Path.GetDirectoryName(filePath);
if (!string.IsNullOrEmpty(folder))
{
sfd.InitialDirectory = folder;
}
sfd.FileName = Path.GetFileNameWithoutExtension(filePath);
}
sfd.DefaultExt = "png";
sfd.Filter = "PNG (*.png)|*.png|JPEG (*.jpg, *.jpeg, *.jpe, *.jfif)|*.jpg;*.jpeg;*.jpe;*.jfif|GIF (*.gif)|*.gif|BMP (*.bmp)|*.bmp|TIFF (*.tif, *.tiff)|*.tif;*.tiff";
if (sfd.ShowDialog() == DialogResult.OK)
{
SaveImage(img, sfd.FileName);
return sfd.FileName;
}
}
return null;
}
// http://stackoverflow.com/questions/788335/why-does-image-fromfile-keep-a-file-handle-open-sometimes
public static Image LoadImage(string filePath)
{
try
{
if (!string.IsNullOrEmpty(filePath) && Helpers.IsImageFile(filePath) && File.Exists(filePath))
{
return Image.FromStream(new MemoryStream(File.ReadAllBytes(filePath)));
}
}
catch (Exception e)
{
DebugHelper.WriteException(e);
}
return null;
}
public static Image CombineImages(IEnumerable images, Orientation orientation = Orientation.Vertical, int space = 0)
{
int width, height;
int spaceSize = space * (images.Count() - 1);
if (orientation == Orientation.Vertical)
{
width = images.Max(x => x.Width);
height = images.Sum(x => x.Height) + spaceSize;
}
else
{
width = images.Sum(x => x.Width) + spaceSize;
height = images.Max(x => x.Height);
}
Bitmap bmp = new Bitmap(width, height);
using (Graphics g = Graphics.FromImage(bmp))
{
g.SetHighQuality();
int position = 0;
foreach (Image image in images)
{
Rectangle rect;
if (orientation == Orientation.Vertical)
{
rect = new Rectangle(0, position, image.Width, image.Height);
position += image.Height + space;
}
else
{
rect = new Rectangle(position, 0, image.Width, image.Height);
position += image.Width + space;
}
g.DrawImage(image, rect);
}
}
return bmp;
}
public static Image CreateColorPickerIcon(Color color, Rectangle rect)
{
Bitmap bmp = new Bitmap(rect.Width, rect.Height);
using (Graphics g = Graphics.FromImage(bmp))
{
DrawColorPickerIcon(g, color, rect);
}
return bmp;
}
public static void DrawColorPickerIcon(Graphics g, Color color, Rectangle rect)
{
if (color.A < 255)
{
using (Image checker = CreateCheckers(rect.Width / 2, rect.Height / 2, Color.LightGray, Color.White))
{
g.DrawImage(checker, rect);
}
}
using (SolidBrush brush = new SolidBrush(color))
{
g.FillRectangle(brush, rect);
}
g.DrawRectangleProper(Pens.Black, rect);
}
public static void HighlightImage(Bitmap bmp)
{
HighlightImage(bmp, new Rectangle(0, 0, bmp.Width, bmp.Height));
}
public static void HighlightImage(Bitmap bmp, Rectangle rect)
{
HighlightImage(bmp, rect, Color.Yellow);
}
public static void HighlightImage(Bitmap bmp, Rectangle rect, Color highlightColor)
{
using (UnsafeBitmap unsafeBitmap = new UnsafeBitmap(bmp, true))
{
for (int y = rect.Y; y < rect.Height; y++)
{
for (int x = rect.X; x < rect.Width; x++)
{
ColorBgra color = unsafeBitmap.GetPixel(x, y);
color.Red = Math.Min(color.Red, highlightColor.R);
color.Green = Math.Min(color.Green, highlightColor.G);
color.Blue = Math.Min(color.Blue, highlightColor.B);
unsafeBitmap.SetPixel(x, y, color);
}
}
}
}
}
}