/// <summary>
/// Gets the name for the cached version of the specified image.
/// </summary>
/// <param name="imagePath">The image path to cache.</param>
/// <returns>The name of the associated cached image</returns>
private string GetCachedImageName(string imagePath)
{
var desktopSize = DesktopHelper.GetPrimaryDesktopSize();
var imageName = Path.GetFileNameWithoutExtension(imagePath)
+ "."
+ desktopSize.Width
+ "x"
+ desktopSize.Height
+ "."
+ File.GetLastWriteTime(imagePath).ToString("yyyyMMddhhmmss");
if (ApplyMedianFilter)
{
imageName += ".median";
}
imageName += ".jpg";
return(Path.Combine(Path.GetTempPath(), imageName));
}
/// <summary>
/// Sets the current desktop wallpaper to the specified image.
/// </summary>
/// <param name="imagePath">The path of the image to set as the wallpaper.</param>
public void SetWallpaper(string imagePath)
{
if (_settingWallpaper)
{
return;
}
if (!File.Exists(imagePath))
{
return;
}
_settingWallpaper = true;
try
{
// get name cached
var cachedImageName = GetCachedImageName(imagePath);
// generate cached image if one doesn't exist
if (!File.Exists(cachedImageName))
{
var desktopSize = DesktopHelper.GetPrimaryDesktopSize();
var image = Image.FromFile(imagePath);
ExifRotate(image);
Image wallpaper;
if (LandscapeOnly)
{
if (image.Width < image.Height)
{
_settingWallpaper = false;
ChangeWallpaper();
return;
}
}
var cropWallpaper = false;
if (desktopSize.Width > desktopSize.Height && image.Width > image.Height)
{
cropWallpaper = true;
}
else if (desktopSize.Width < desktopSize.Height && image.Width < image.Height)
{
cropWallpaper = true;
}
if (cropWallpaper)
{
wallpaper = ImageHelper.ScaleAndCropImageToFit(image, desktopSize);
}
else
{
var smallDesktopSize = new Size(desktopSize.Width / 4, desktopSize.Height / 4);
var scaledBackgroundImage = ImageHelper.ScaleAndCropImageToFit(image, smallDesktopSize);
var darkBackgroundImage = ImageHelper.DarkenImage(scaledBackgroundImage, 0.5);
var blurredBackgroundImage = ImageHelper.BlurFilter(darkBackgroundImage, 10);
wallpaper = ImageHelper.ScaleAndCropImageToFit(blurredBackgroundImage, desktopSize);
var scaledImage = ImageHelper.ScaleImageToFit(image, desktopSize);
using (var graphics = Graphics.FromImage(wallpaper))
{
var x = (desktopSize.Width - scaledImage.Width) / 2;
var y = (desktopSize.Height - scaledImage.Height) / 2;
var imageLocation = new Point(x, y);
graphics.DrawImage(scaledImage, imageLocation);
}
scaledImage.Dispose();
scaledBackgroundImage.Dispose();
blurredBackgroundImage.Dispose();
darkBackgroundImage.Dispose();
}
if (ApplyMedianFilter)
{
using (var medianImage = ImageHelper.MedianFilter(wallpaper, 4))
{
medianImage.Save(cachedImageName, ImageFormat.Jpeg);
}
}
else
{
wallpaper.Save(cachedImageName, ImageFormat.Jpeg);
}
wallpaper.Dispose();
image.Dispose();
}
// get name for wallpaper bitmap in temp folder
var wallpaperPath = Path.Combine(Path.GetTempPath(), "Wallpaper.bmp");
// save cached image as wallpaper file and set as current wallpaper
using (var image = Image.FromFile(cachedImageName))
{
image.Save(wallpaperPath, ImageFormat.Bmp);
}
WallpaperHelper.SetWallpaper(wallpaperPath);
// set as recent wallpaper
CurrentWallpaperImage = imagePath;
AddToRecentWallpaperList(imagePath);
}
catch (Exception e)
{
var message = $"Error setting wallpaper'{imagePath}'\r\n{e}";
AddLogEntry(message);
SaveLog();
}
finally
{
_settingWallpaper = false;
}
}