/// <summary>
/// Creates a Display instance.
/// </summary>
/// <param name="settings">ScreenSettings object</param>
/// <param name="startupWindow"></param>
public Display(ScreenSettings settings, bool startupWindow)
{
ScreenSettings = settings;
_startupWindow = startupWindow;
InitializeComponent();
Paint += new PaintEventHandler(Display_Paint);
}
/// <summary>
/// Gets a Screen instance from the provided screen ScreenSettings.
/// </summary>
/// <param name="screenSettings">screen settings</param>
/// <returns>Screen instance</returns>
public static Screen GetScreen(ScreenSettings screenSettings)
{
var screens = from screen in Screen.AllScreens where screen.DeviceName == screenSettings.ScreenID select screen;
return screens.Count() == 1 ? screens.First() : null;
}
/// <summary>
/// Draw image for a single screen using the provided ScreenSettings.
/// </summary>
/// <param name="screenSettings">screen settings</param>
/// <returns>background image</returns>
public static Image DesktopImage(ScreenSettings screenSettings)
{
Screen screen = GetScreen(screenSettings);
Image image = new Bitmap(screen.Bounds.Width, screen.Bounds.Height);
Graphics graphics = Graphics.FromImage(image);
if (!string.IsNullOrEmpty(screenSettings.WallpaperPath))
{
// give a better error for missing files
if (!File.Exists(screenSettings.WallpaperPath))
throw new FileNotFoundException(string.Format("The file '{0}' could not be found.", screenSettings.WallpaperPath),
screenSettings.WallpaperPath);
Image wallpaper = Image.FromFile(screenSettings.WallpaperPath);
float ratio;
Rectangle newImageBounds = Rectangle.Empty;
// test to see if the image is the same size as the screen
// this should happen often enough that I thought I'd make it more efficient if there was an exact match
// all that math isn't necessary if the screen and image are the same size
bool imageIsSameAsScreenSize = wallpaper.Width != screen.Bounds.Width || wallpaper.Height != screen.Bounds.Height;
if (!imageIsSameAsScreenSize)
{
// get image resize ratio
ratio = Math.Min((float)screen.Bounds.Height / (float)wallpaper.Height, (float)screen.Bounds.Width / (float)wallpaper.Width);
// get the image bounds based on the new ratio
newImageBounds = new Rectangle(screen.Bounds.Width / 2 - (int)((float)(wallpaper.Width / 2) * ratio), screen.Bounds.Height / 2 - (int)((float)
(wallpaper.Height / 2) * ratio), (int)((float)wallpaper.Width * ratio), (int)((float)wallpaper.Height * ratio));
}
switch (screenSettings.Style)
{
case WallPaperStyle.FitToScreen:
if (!imageIsSameAsScreenSize)
{
// fill background color
graphics.FillRectangle(new SolidBrush(screenSettings.BackgroundColor), 0, 0, screen.Bounds.Width, screen.Bounds.Height);
graphics.DrawImage(wallpaper, newImageBounds);
}
else
graphics.DrawImage(wallpaper, new Rectangle(0, 0, screen.Bounds.Width, screen.Bounds.Height));
break;
case WallPaperStyle.FillScreen:
if (!imageIsSameAsScreenSize)
{
// fill background color
graphics.FillRectangle(new SolidBrush(screenSettings.BackgroundColor), 0, 0, screen.Bounds.Width, screen.Bounds.Height);
graphics.DrawImage(wallpaper, newImageBounds);
}
else
graphics.DrawImage(wallpaper, new Rectangle(0, 0, screen.Bounds.Width, screen.Bounds.Height));
break;
case WallPaperStyle.StretchToFillScreen:
graphics.DrawImage(wallpaper, new Rectangle(0, 0, screen.Bounds.Width, screen.Bounds.Height));
break;
case WallPaperStyle.Center:
// only fill if image is smaller than background
if (screen.Bounds.Width > wallpaper.Width && screen.Bounds.Height > wallpaper.Height)
graphics.FillRegion(new SolidBrush(screenSettings.BackgroundColor), new Region(screen.Bounds));
graphics.DrawImage(wallpaper, screen.Bounds.Width / 2 - wallpaper.Width / 2, screen.Bounds.Height / 2 - wallpaper.Height / 2,
wallpaper.Width, wallpaper.Height);
break;
case WallPaperStyle.Tile:
// create new texture brush
TextureBrush texture = new TextureBrush(wallpaper, WrapMode.Tile);
// if image is not same as screen size, translate texture to start from the center
if (!imageIsSameAsScreenSize)
texture.TranslateTransform(screen.Bounds.Width / 2 - wallpaper.Width / 2, screen.Bounds.Height / 2 - wallpaper.Height / 2);
graphics.FillRegion(texture, new Region(new Rectangle(0, 0, screen.Bounds.Width, screen.Bounds.Height)));
break;
}
}
else
// no image, just color fill
graphics.FillRegion(new SolidBrush(screenSettings.BackgroundColor), new Region(screen.Bounds));
return image;
}
