public HardwareCursor(CursorProvider cursorProvider)
{
this.cursorProvider = cursorProvider;
paletteReferences = new Cache <string, PaletteReference>(CreatePaletteReference);
foreach (var p in cursorProvider.Palettes)
{
hardwarePalette.AddPalette(p.Key, p.Value, false);
}
hardwarePalette.Initialize();
sheetBuilder = new SheetBuilder(SheetType.Indexed);
foreach (var kv in cursorProvider.Cursors)
{
var frames = kv.Value.Frames;
var palette = cursorProvider.Palettes[kv.Value.Palette];
// Hardware cursors have a number of odd platform-specific bugs/limitations.
// Reduce the number of edge cases by padding the individual frames such that:
// - the hotspot is inside the frame bounds (enforced by SDL)
// - all frames within a sequence have the same size (needed for macOS 10.15)
// - the frame size is a multiple of 8 (needed for Windows)
var sequenceBounds = Rectangle.FromLTRB(0, 0, 1, 1);
var frameHotspots = new int2[frames.Length];
for (var i = 0; i < frames.Length; i++)
{
// Hotspot relative to the center of the frame
frameHotspots[i] = kv.Value.Hotspot - frames[i].Offset.ToInt2() + new int2(frames[i].Size) / 2;
// Bounds relative to the hotspot
sequenceBounds = Rectangle.Union(sequenceBounds, new Rectangle(-frameHotspots[i], frames[i].Size));
}
// Pad bottom-right edge to make the frame size a multiple of 8
var paddedSize = 8 * new int2((sequenceBounds.Width + 7) / 8, (sequenceBounds.Height + 7) / 8);
var cursors = new IHardwareCursor[frames.Length];
var frameSprites = new Sprite[frames.Length];
for (var i = 0; i < frames.Length; i++)
{
// Software rendering is used when the cursor is locked
frameSprites[i] = sheetBuilder.Add(frames[i].Data, frames[i].Size, 0, frames[i].Offset);
// Calculate the padding to position the frame within sequenceBounds
var paddingTL = -(sequenceBounds.Location + frameHotspots[i]);
var paddingBR = paddedSize - new int2(frames[i].Size) - paddingTL;
cursors[i] = CreateCursor(kv.Key, frames[i], palette, paddingTL, paddingBR, -sequenceBounds.Location);
}
hardwareCursors.Add(kv.Key, cursors);
sprites.Add(kv.Key, frameSprites);
}
sheetBuilder.Current.ReleaseBuffer();
Update();
}
public void SetHardwareCursor(IHardwareCursor cursor)
{
VerifyThreadAffinity();
if (cursor is Sdl2HardwareCursor c)
{
SDL.SDL_ShowCursor((int)SDL.SDL_bool.SDL_TRUE);
SDL.SDL_SetCursor(c.Cursor);
}
else
{
SDL.SDL_ShowCursor((int)SDL.SDL_bool.SDL_FALSE);
}
}
public void SetHardwareCursor(IHardwareCursor cursor)
{
var c = cursor as SDL2HardwareCursor;
if (c == null)
{
SDL.SDL_ShowCursor(0);
}
else
{
SDL.SDL_ShowCursor(1);
SDL.SDL_SetCursor(c.Cursor);
}
}
public void SetHardwareCursor(IHardwareCursor cursor)
{
VerifyThreadAffinity();
var c = cursor as SDL2HardwareCursor;
if (c == null)
{
SDL.SDL_ShowCursor((int)SDL.SDL_bool.SDL_FALSE);
}
else
{
SDL.SDL_ShowCursor((int)SDL.SDL_bool.SDL_TRUE);
SDL.SDL_SetCursor(c.Cursor);
}
}
public void SetHardwareCursor(IHardwareCursor cursor)
{
VerifyThreadAffinity();
var c = cursor as SDL2HardwareCursor;
if (c == null)
SDL.SDL_ShowCursor((int)SDL.SDL_bool.SDL_FALSE);
else
{
SDL.SDL_ShowCursor((int)SDL.SDL_bool.SDL_TRUE);
SDL.SDL_SetCursor(c.Cursor);
}
}
public void SetHardwareCursor(IHardwareCursor cursor)
{
}
public void SetHardwareCursor(IHardwareCursor cursor)
{
var c = cursor as SDL2HardwareCursor;
if (c == null)
SDL.SDL_ShowCursor(0);
else
{
SDL.SDL_ShowCursor(1);
SDL.SDL_SetCursor(c.Cursor);
}
}
