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add AlphaBlend to GDIRenderer

This commit is contained in:
zeromus 2014-09-18 00:31:32 +00:00
parent 1bf77201d1
commit a32b5faf95
2 changed files with 33 additions and 3 deletions
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34
BizHawk.Client.EmuHawk/CustomControls/GDIRenderer.cs
View File

@ -65,12 +65,19 @@ namespace BizHawk.Client.EmuHawk.CustomControls
/// <summary>
/// Draw a bitmap object at the given position
/// </summary>
public void DrawBitmap(Bitmap bitmap, Point point)
public void DrawBitmap(Bitmap bitmap, Point point, bool blend = false)
{
IntPtr hbmp = bitmap.GetHbitmap();
var bitHDC = CreateCompatibleDC(CurrentHDC);
IntPtr old = new IntPtr(SelectObject(bitHDC, hbmp));
BitBlt(CurrentHDC, point.X, point.Y, bitmap.Width, bitmap.Height, bitHDC, 0, 0, 0xCC0020);
if (blend)
{
AlphaBlend(CurrentHDC, point.X, point.Y, bitmap.Width, bitmap.Height, bitHDC, 0, 0, bitmap.Width, bitmap.Height, new BLENDFUNCTION(AC_SRC_OVER, 0, 0xff, AC_SRC_ALPHA));
}
else
{
BitBlt(CurrentHDC, point.X, point.Y, bitmap.Width, bitmap.Height, bitHDC, 0, 0, 0xCC0020);
}
SelectObject(bitHDC, old);
DeleteDC(bitHDC);
}
@ -365,6 +372,29 @@ namespace BizHawk.Client.EmuHawk.CustomControls
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool BitBlt([In] IntPtr hdc, int nXDest, int nYDest, int nWidth, int nHeight, [In] IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);
[DllImport("gdi32.dll", EntryPoint = "GdiAlphaBlend")]
static extern bool AlphaBlend(IntPtr hdcDest, int nXOriginDest, int nYOriginDest, int nWidthDest, int nHeightDest, IntPtr hdcSrc, int nXOriginSrc, int nYOriginSrc, int nWidthSrc, int nHeightSrc, BLENDFUNCTION blendFunction);
[StructLayout(LayoutKind.Sequential)]
public struct BLENDFUNCTION
{
byte BlendOp;
byte BlendFlags;
byte SourceConstantAlpha;
byte AlphaFormat;
public BLENDFUNCTION(byte op, byte flags, byte alpha, byte format)
{
BlendOp = op;
BlendFlags = flags;
SourceConstantAlpha = alpha;
AlphaFormat = format;
}
}
const byte AC_SRC_OVER = 0x00;
const byte AC_SRC_ALPHA = 0x01;
[DllImport("gdi32.dll")]
static extern int SetBitmapBits(IntPtr hbmp, uint cBytes, byte[] lpBits);

2
BizHawk.Client.EmuHawk/tools/TAStudio/InputRoll.cs
View File

@ -632,7 +632,7 @@ namespace BizHawk.Client.EmuHawk
if (image != null)
{
Gdi.DrawBitmap(image, new Point(col.Left.Value, point.Y + 1));
Gdi.DrawBitmap(image, new Point(col.Left.Value, point.Y + 1),true);
}
else
{