public void CopyToImage(X11Image image)
{
if (image.Height != height || image.Width != width)
{
throw new InvalidOperationException($"Source size ({width} x {height}) does not match image size ({image.Width} x {image.Height}).");
}
using (X11Bitmap xBitmap = X11Bitmap.Create(image.Display, image.Visual, width, height))
{
if (pixelFormat == PixelFormat.RGBA_32)
{
PixelConverter.Convert_RGBA_32BE_To_PARGB_32(dataPtr, stride, xBitmap.ImageData, 4 * width, width, height);
}
else if (pixelFormat == PixelFormat.RGB_24)
{
PixelConverter.Convert_RGB_24BE_To_ARGB_32(dataPtr, stride, xBitmap.ImageData, 4 * width, width, height);
}
else
{
throw new InvalidOperationException($"Unexpected pixel format: {pixelFormat}.");
}
var gcValues = new XGCValues();
var gc = LibX11.XCreateGC(image.Display, image.PixmapId, 0, ref gcValues);
try
{
LibX11.XPutImage(image.Display, image.PixmapId, gc, xBitmap.XImage, 0, 0, 0, 0, (uint)width, (uint)height);
}
finally
{
LibX11.XFreeGC(image.Display, gc);
}
}
}
private void WithExtraCanvas(Rectangle rect, Action <X11Canvas> action)
{
using (X11Image tempImage = X11Image.Create(display, visual, drawableId, rect.Width, rect.Height))
{
var gcValues = new XGCValues();
gcValues.foreground = ToPArgb(Color.Transparent);
var gcValueMask = XGCValueMask.GCForeground;
var gc = LibX11.XCreateGC(display, drawableId, gcValueMask, ref gcValues);
try
{
// todo: check int -> uint conversion
LibX11.XFillRectangle(display, tempImage.PixmapId, gc, 0, 0, (uint)rect.Width, (uint)rect.Height);
}
finally
{
LibX11.XFreeGC(display, gc);
}
using (var innerCanvas = X11Canvas.CreateForDrawable(display, screenNum, objectCache, visual, colormap, pictFormatPtr, tempImage.PixmapId))
{
action(innerCanvas);
DrawImage(tempImage, rect.X + origin.X, rect.Y + origin.Y);
}
}
}
private void FillEllipseXLib(Color color, int x, int y, int width, int height)
{
var gcValues = new XGCValues();
gcValues.foreground = ToPArgb(color);
var gcValueMask = XGCValueMask.GCForeground;
var gc = LibX11.XCreateGC(display, drawableId, gcValueMask, ref gcValues);
try
{
if (clipRectangles != null)
{
LibX11.XSetClipRectangles(display, gc, 0, 0, clipRectangles, clipRectangles.Length, 0);
}
LibX11.XDrawArc(display, drawableId, gc, x, y, (uint)width - 1, (uint)height - 1, 0, 360 * 64);
LibX11.XFillArc(display, drawableId, gc, x, y, (uint)width - 1, (uint)height - 1, 0, 360 * 64);
}
finally
{
LibX11.XFreeGC(display, gc);
}
}
private void DrawPathWithXLibDirectly(Color color, int width, Point[] points)
{
var gcValues = new XGCValues();
gcValues.cap_style = X11CapStyle.CapRound;
gcValues.join_style = X11JoinStyle.JoinRound;
gcValues.foreground = ToPArgb(color);
gcValues.line_width = width;
var gcValueMask = XGCValueMask.GCCapStyle | XGCValueMask.GCForeground | XGCValueMask.GCJoinStyle | XGCValueMask.GCLineWidth;
var gc = LibX11.XCreateGC(display, drawableId, gcValueMask, ref gcValues);
try
{
if (clipRectangles != null)
{
LibX11.XSetClipRectangles(display, gc, 0, 0, clipRectangles, clipRectangles.Length, 0);
}
XPoint[] xPoints = new XPoint[points.Length];
for (int i = 0; i < points.Length; i++)
{
var point = points[i];
xPoints[i] = new XPoint(point.X, point.Y);
}
LibX11.XDrawLines(display, drawableId, gc, xPoints, xPoints.Length, X11CoordinateMode.CoordModeOrigin);
}
finally
{
LibX11.XFreeGC(display, gc);
}
}
public void CopyFromBitmap(Rectangle imageArea, IntPtr bitmap, int bitmapStride)
{
// todo: create separate validation ?
NativeBitmapSourceParameterValidation.CopyToBitmap(this, imageArea, bitmap, bitmapStride, out _);
using (X11Bitmap xBitmap = X11Bitmap.Create(Display, Visual, imageArea.Width, imageArea.Height))
{
PixelConverter.Convert_ARGB_32_To_PARGB_32(bitmap, bitmapStride, xBitmap.ImageData, imageArea.Width * 4, imageArea.Width, imageArea.Height);
var gcValues = new XGCValues();
var gc = LibX11.XCreateGC(Display, PixmapId, 0, ref gcValues);
try
{
LibX11.XPutImage(Display, PixmapId, gc, xBitmap.XImage, 0, 0, imageArea.X, imageArea.Y, (uint)imageArea.Width, (uint)imageArea.Height);
}
finally
{
LibX11.XFreeGC(Display, gc);
}
}
}
public static extern GC XCreateGC(
DisplayPtr display,
Drawable d,
XGCValueMask valuemask,
[In] ref XGCValues values
);
