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Add support for hardware cursors.

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This commit is contained in:
Paul Chote
2014-11-13 22:03:53 +13:00
committed by Paul Chote
parent 75b046ae2a
commit 1317101662
6 changed files with 194 additions and 1 deletions
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46
OpenRA.Renderer.Sdl2/Sdl2GraphicsDevice.cs
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@@ -10,6 +10,8 @@
using System;
using System.Drawing;
using System.IO;
using System.Runtime.InteropServices;
using OpenRA;
using OpenRA.Graphics;
using OpenTK.Graphics.OpenGL;
@@ -80,7 +82,6 @@ namespace OpenRA.Renderer.Sdl2
SDL.SDL_SetHint(SDL.SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS, "0");
}
SDL.SDL_ShowCursor(0);
context = SDL.SDL_GL_CreateContext(window);
SDL.SDL_GL_MakeCurrent(window, context);
GL.LoadAll();
@@ -103,10 +104,53 @@ namespace OpenRA.Renderer.Sdl2
input = new Sdl2Input();
}
public IHardwareCursor CreateHardwareCursor(string name, Size size, byte[] data, int2 hotspot)
{
var c = new SDL2HardwareCursor(size, data, hotspot);
if (c.Cursor == IntPtr.Zero)
throw new InvalidDataException("Failed to create hardware cursor `{0}`: {1}".F(name, SDL.SDL_GetError()));
return c;
}
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);
}
}
class SDL2HardwareCursor : IHardwareCursor
{
public readonly IntPtr Cursor;
readonly IntPtr surface;
public SDL2HardwareCursor(Size size, byte[] data, int2 hotspot)
{
surface = SDL.SDL_CreateRGBSurface(0, size.Width, size.Height, 32, 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000);
var sur = (SDL2.SDL.SDL_Surface)Marshal.PtrToStructure(surface, typeof(SDL2.SDL.SDL_Surface));
Marshal.Copy(data, 0, sur.pixels, data.Length);
Cursor = SDL.SDL_CreateColorCursor(surface, hotspot.X, hotspot.Y);
}
public void Dispose()
{
SDL.SDL_FreeCursor(Cursor);
SDL.SDL_FreeSurface(surface);
}
}
public void Dispose()
{
if (disposed)
return;
disposed = true;
if (context != IntPtr.Zero)
{