private static Bitmap StretchButtonHorizontal(Bitmap bmp, int horizontalstretch)
{
// snap it in half, pull halves apart, slice off the inner edges and
// clone them along the gap
// Get as big a slice in the middle as we can (the highest common factor of the
// stretch and half the width)
int halfwidth = bmp.Width / 2;
int slicewidth = AppController.GetHighestCommonDenominator(horizontalstretch, halfwidth);
Bitmap newbitmap = new Bitmap(bmp.Width + horizontalstretch, bmp.Height);
using (Graphics g = Graphics.FromImage(newbitmap))
{
g.DrawImage(bmp, 0, 0, new Rectangle(0, 0, halfwidth, bmp.Height), GraphicsUnit.Pixel);
for (int i = 0; i < horizontalstretch; i += slicewidth)
{
g.DrawImage(bmp, halfwidth + i, 0, new Rectangle(halfwidth, 0, slicewidth, bmp.Height), GraphicsUnit.Pixel);
}
g.DrawImage(bmp, halfwidth + horizontalstretch - 1, 0,
new Rectangle(halfwidth, 0, halfwidth, bmp.Height), GraphicsUnit.Pixel);
}
bmp.Dispose();
return(newbitmap);
}
private static Bitmap StretchButtonVertical(Bitmap bmp, int verticalstretch)
{
// Same as horizontal more-or-less
int halfheight = bmp.Height / 2;
int sliceheight = AppController.GetHighestCommonDenominator(verticalstretch, halfheight);
Bitmap newbitmap = new Bitmap(bmp.Width, bmp.Height + verticalstretch);
using (Graphics g = Graphics.FromImage(newbitmap))
{
g.DrawImage(bmp, 0, 0, new Rectangle(0, 0, bmp.Width, halfheight), GraphicsUnit.Pixel);
for (int i = 0; i < verticalstretch; i += sliceheight)
{
g.DrawImage(bmp, 0, halfheight + i, new Rectangle(0, halfheight, bmp.Width, sliceheight), GraphicsUnit.Pixel);
}
g.DrawImage(bmp, 0, halfheight + verticalstretch - 1,
new Rectangle(0, halfheight, bmp.Width, halfheight), GraphicsUnit.Pixel);
}
bmp.Dispose();
return(newbitmap);
}