static CursorTexture loadStatic(this IRenderDevice renderDevice, string resource, int idealSize)
{
using (var stm = openResource(resource))
using (var unzip = new GZipStream(stm, CompressionMode.Decompress))
using (var file = new CursorFile(unzip))
{
int index = findBestCursor(file, idealSize);
return(file.load(renderDevice, index));
}
}
protected override void OnStart(AppHost host)
{
var sampleButton = new LayoutFarm.CustomWidgets.Box(30, 30);
host.AddChild(sampleButton);
sampleButton.MouseDown += ((s, e2) =>
{
//click to create custom cursor
if (!_showCustomCursor)
{
if (_myCursor == null)
{
using (MemBitmap temp = new MemBitmap(16, 16))
using (Tools.BorrowAggPainter(temp, out AggPainter p))
{
//1. create a simple bitmap for our cursor
p.Clear(Color.FromArgb(0, Color.White));
p.FillRect(1, 1, 10, 10, Color.FromArgb(150, Color.Green));
p.FillRect(3, 3, 4, 4, Color.Yellow);
//-------
//create cursor file
CursorFile curFile = new CursorFile();
var iconBmp = new WindowBitmap(temp.Width, temp.Height);
iconBmp.RawBitmapData = MemBitmap.CopyImgBuffer(temp);
curFile.AddBitmap(iconBmp, 1, 1); //add bitmap with hotspot
curFile.Save("myicon.cur"); //save to temp file
_myCursor = UIPlatform.CreateCursor(new CursorRequest("myicon.cur", 16));
}
}
e2.CustomMouseCursor = _myCursor;
_showCustomCursor = true;
}
else
{
_showCustomCursor = false;
e2.MouseCursorStyle = MouseCursorStyle.Default;
}
});
sampleButton.MouseMove += ((s, e2) =>
{
if (_showCustomCursor && _myCursor != null)
{
e2.CustomMouseCursor = _myCursor;
}
});
}
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;
}
}
static int findBestCursor(CursorFile file, int size)
{
return(file.images.minIndex(ii => Math.Abs(ii.size.cx - size)));
}
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;
}
}
