public unsafe Cursor(FileSystemEntry entry, float windowScale)
{
var cursorFile = CursorFile.FromFileSystemEntry(entry);
_animationFrames = cursorFile.AnimationFrames;
_surfaces = new Sdl2Interop.SDL_Surface[cursorFile.Images.Length];
_cursors = new Sdl2Interop.SDL_Cursor[cursorFile.Images.Length];
for (var i = 0; i < cursorFile.Images.Length; i++)
{
var image = cursorFile.Images[i];
var width = (int)image.Width;
var height = (int)image.Height;
Sdl2Interop.SDL_Surface surface;
if (windowScale == 1.0f)
{
fixed(byte *pixelsPtr = image.PixelsBgra)
{
surface = Sdl2Interop.SDL_CreateRGBSurfaceWithFormatFrom(
pixelsPtr,
width,
height,
32,
width * 4,
Sdl2Interop.SDL_PixelFormat.SDL_PIXELFORMAT_ABGR8888);
}
}
else
{
var scaledWidth = (int)(windowScale * width);
var scaledHeight = (int)(windowScale * height);
var scaledImage = Image.LoadPixelData <Bgra32>(image.PixelsBgra, width, height);
scaledImage.Mutate(x => x.Resize(scaledWidth, scaledHeight));
if (!scaledImage.TryGetSinglePixelSpan(out Span <Bgra32> pixelSpan))
{
throw new InvalidOperationException("Unable to get image pixelspan.");
}
fixed(void *pin = &MemoryMarshal.GetReference(pixelSpan))
{
surface = Sdl2Interop.SDL_CreateRGBSurfaceWithFormatFrom(
(byte *)pin,
scaledWidth,
scaledHeight,
32,
scaledWidth * 4,
Sdl2Interop.SDL_PixelFormat.SDL_PIXELFORMAT_ABGR8888);
}
}
AddDisposeAction(() => Sdl2Interop.SDL_FreeSurface(surface));
_surfaces[i] = surface;
var cursor = Sdl2Interop.SDL_CreateColorCursor(
_surfaces[i],
(int)(image.HotspotX * windowScale),
(int)(image.HotspotY * windowScale));
AddDisposeAction(() => Sdl2Interop.SDL_FreeCursor(cursor));
_cursors[i] = cursor;
}
}
public unsafe Cursor(FileSystemEntry entry, GameWindow window)
{
var cursorFile = CursorFile.FromFileSystemEntry(entry);
_animationFrames = cursorFile.AnimationFrames;
_surfaces = new Sdl2Interop.SDL_Surface[cursorFile.Images.Length];
_cursors = new Sdl2Interop.SDL_Cursor[cursorFile.Images.Length];
var windowScale = window.WindowScale;
for (var i = 0; i < cursorFile.Images.Length; i++)
{
var image = cursorFile.Images[i];
var width = (int)image.Width;
var height = (int)image.Height;
fixed(byte *pixelsPtr = image.PixelsBgra)
{
var surface = Sdl2Interop.SDL_CreateRGBSurfaceWithFormatFrom(
pixelsPtr,
width,
height,
32,
width * 4,
Sdl2Interop.SDL_PixelFormat.SDL_PIXELFORMAT_ABGR8888);
if (windowScale != 1.0f)
{
var scaledWidth = (int)(windowScale * width);
var scaledHeight = (int)(windowScale * height);
var scaledSurface = Sdl2Interop.SDL_CreateRGBSurfaceWithFormat(
0,
scaledWidth,
scaledHeight,
32,
Sdl2Interop.SDL_PixelFormat.SDL_PIXELFORMAT_ABGR8888);
Sdl2Interop.SDL_BlitScaled(
surface,
new Sdl2Interop.SDL_Rect(0, 0, width, height),
scaledSurface,
new Sdl2Interop.SDL_Rect(0, 0, scaledWidth, scaledHeight));
Sdl2Interop.SDL_FreeSurface(surface);
surface = scaledSurface;
}
AddDisposeAction(() => Sdl2Interop.SDL_FreeSurface(surface));
_surfaces[i] = surface;
}
var cursor = Sdl2Interop.SDL_CreateColorCursor(
_surfaces[i],
(int)(image.HotspotX * windowScale),
(int)(image.HotspotY * windowScale));
AddDisposeAction(() => Sdl2Interop.SDL_FreeCursor(cursor));
_cursors[i] = cursor;
}
}