// Convert an image frame into an XImage.
public static IntPtr FrameToXImage(Screen screen, Frame frame)
{
int[] fpalette;
XPixel[] palette;
int index, color;
Colormap colormap = screen.DefaultColormap;
// Create a palette to use to render the image.
fpalette = frame.Palette;
if (fpalette != null)
{
// Convert the palette within the image frame itself.
palette = new XPixel [256];
for (index = 0; index < 256 && index < fpalette.Length;
++index)
{
color = fpalette[index];
palette[index] = colormap.RGBToPixel
(new Color((color >> 16) & 0xFF,
(color >> 8) & 0xFF, color & 0xFF));
}
}
else
{
// We have an RGB image: use a standard palette.
palette = colormap.GetStandardPalette();
}
// Convert the frame into an XImage and return it.
return(Xlib.XSharpCreateImageFromDIB
(screen.screen, frame.Width, frame.Height,
frame.Stride, (int)(frame.PixelFormat),
frame.Data, 0, palette));
}
// Convert an image frame into an XImage.
public static IntPtr FrameToXImage(Screen screen, Frame frame)
{
int[] fpalette;
XPixel[] palette;
int index, color;
Colormap colormap = screen.DefaultColormap;
// Create a palette to use to render the image.
fpalette = frame.Palette;
if(fpalette != null)
{
// Convert the palette within the image frame itself.
palette = new XPixel [256];
for(index = 0; index < 256 && index < fpalette.Length;
++index)
{
color = fpalette[index];
palette[index] = colormap.RGBToPixel
(new Color((color >> 16) & 0xFF,
(color >> 8) & 0xFF, color & 0xFF));
}
}
else
{
// We have an RGB image: use a standard palette.
palette = colormap.GetStandardPalette();
}
// Convert the frame into an XImage and return it.
return Xlib.XSharpCreateImageFromDIB
(screen.screen, frame.Width, frame.Height,
frame.Stride, (int)(frame.PixelFormat),
frame.Data, 0, palette);
}
extern public static XStatus XagCreateEmbeddedApplicationGroup (IntPtr display, XVisualID root_visual, XColormap default_colormap, XPixel black_pixel, XPixel white_pixel, out XAppGroup app_group);
extern public static IntPtr XSharpCreateImageFromDIB (IntPtr screen, int width, int height, int stride, int pixelFormat, byte[] data, int isMask, XPixel[] palette);
extern public static int XSetBackground (IntPtr display, IntPtr gc, XPixel background);
extern public static int XSetForeground (IntPtr display, IntPtr gc, XPixel foreground);
extern public static int XSetWindowBackground (IntPtr display, XWindow w, XPixel background_pixel);
// Draw a radio button.
private void DrawRadio(IntPtr display,
int x, int y, int width, int height,
XPixel topShadow,
XPixel topShadowEnhanced,
XPixel bottomShadow,
XPixel bottomShadowEnhanced,
XPixel foreground,
XPixel background)
{
// Adjust the top-left position of the radio button.
x += (width - BuiltinBitmaps.RadioWidth) / 2;
y += (height - BuiltinBitmaps.RadioHeight) / 2;
width = BuiltinBitmaps.RadioWidth;
height = BuiltinBitmaps.RadioHeight;
// Draw the bitmaps.
BuiltinBitmaps bitmaps = dpy.bitmaps;
Xlib.XSetStipple(display, gc, bitmaps.RadioBottom);
Xlib.XSetTSOrigin(display, gc, x, y);
Xlib.XSetForeground(display, gc, bottomShadow);
Xlib.XSetFillStyle(display, gc, (int)(FillStyle.FillStippled));
Xlib.XFillRectangle(display, drawableHandle, gc,
x, y, width, height);
Xlib.XSetStipple(display, gc, bitmaps.RadioBottomEnhanced);
Xlib.XSetForeground(display, gc, bottomShadowEnhanced);
Xlib.XFillRectangle(display, drawableHandle, gc,
x, y, width, height);
Xlib.XSetStipple(display, gc, bitmaps.RadioTop);
Xlib.XSetForeground(display, gc, topShadow);
Xlib.XFillRectangle(display, drawableHandle, gc,
x, y, width, height);
Xlib.XSetStipple(display, gc, bitmaps.RadioTopEnhanced);
Xlib.XSetForeground(display, gc, topShadowEnhanced);
Xlib.XFillRectangle(display, drawableHandle, gc,
x, y, width, height);
Xlib.XSetStipple(display, gc, bitmaps.RadioForeground);
Xlib.XSetForeground(display, gc, foreground);
Xlib.XFillRectangle(display, drawableHandle, gc,
x, y, width, height);
Xlib.XSetStipple(display, gc, bitmaps.RadioBackground);
Xlib.XSetForeground(display, gc, background);
Xlib.XFillRectangle(display, drawableHandle, gc,
x, y, width, height);
// Restore the previously stipple pixmap.
if(stipple != null)
{
Xlib.XSetStipple(display, gc, stipple.GetPixmapHandle());
}
}