public static Bitmap GetBitmapForSpriteResizedKeepingAspectRatio(Sprite sprite, int width, int height, bool centreInNewCanvas, bool drawOutline, Color backgroundColour)
{
float targetWidthHeightRatio = (float)width / (float)height;
float spriteWidthHeightRatio = (float)sprite.Width / (float)sprite.Height;
int newWidth, newHeight;
if ((sprite.Width < width / 2) && (sprite.Height < height / 2))
{
newWidth = sprite.Width * 2;
newHeight = sprite.Height * 2;
}
else if (spriteWidthHeightRatio > targetWidthHeightRatio)
{
newWidth = width;
newHeight = (int)(((float)width / (float)sprite.Width) * (float)sprite.Height);
}
else
{
newHeight = height;
newWidth = (int)(((float)height / (float)sprite.Height) * (float)sprite.Width);
}
// correct size if a very wide/tall image (eg. 400x2) is shrunk
if (newWidth < 1)
{
newWidth = 1;
}
if (newHeight < 1)
{
newHeight = 1;
}
Bitmap newBmp = new Bitmap(width, height, PixelFormat.Format32bppRgb);
using (Graphics g = Graphics.FromImage(newBmp))
{
g.Clear(backgroundColour);
int x = 0, y = 0;
using (Bitmap bitmapToDraw = Factory.NativeProxy.GetBitmapForSprite(sprite.Number, newWidth, newHeight))
{
Bitmap bmp = bitmapToDraw ?? SpriteTools.GetPlaceHolder();
if (centreInNewCanvas)
{
x = width / 2 - bmp.Width / 2;
y = height - bmp.Height;
}
g.DrawImage(bmp, x, y, bmp.Width, bmp.Height);
}
if (drawOutline)
{
g.DrawRectangle(Pens.Brown, x, y, newWidth - 1, newHeight - 1);
}
}
return(newBmp);
}
private void cmbFilenames_SelectedIndexChanged(object sender, EventArgs e)
{
string filename = imageLookup[cmbFilenames.SelectedIndex];
try
{
image = SpriteTools.LoadFirstImageFromFile(filename);
}
catch (Types.InvalidDataException ex)
{
// use a placeholder in-case of bad data
Factory.GUIController.ShowMessage(ex.Message, MessageBoxIconType.Error);
image = SpriteTools.GetPlaceHolder();
}
PostImageLoad();
}