// Set this cursor on a widget.
internal void SetCursor(Widget widget)
{
Display dpy = widget.dpy;
try
{
IntPtr display = dpy.Lock();
XWindow window = widget.GetWidgetHandle();
if (source != null)
{
if (cursor == XCursor.Zero)
{
XColor foreground = new XColor();
foreground.red = (ushort)0;
foreground.green = (ushort)0;
foreground.blue = (ushort)0;
foreground.flags =
(XColor.DoRed | XColor.DoGreen | XColor.DoBlue);
XColor background = new XColor();
background.red = (ushort)0xFFFF;
background.green = (ushort)0xFFFF;
background.blue = (ushort)0xFFFF;
background.flags =
(XColor.DoRed | XColor.DoGreen | XColor.DoBlue);
if (reverse)
{
cursor = Xlib.XCreatePixmapCursor
(display,
source.GetPixmapHandle(),
mask.GetPixmapHandle(),
ref background, ref foreground,
(uint)hotspotX, (uint)hotspotY);
}
else
{
cursor = Xlib.XCreatePixmapCursor
(display,
source.GetPixmapHandle(),
mask.GetPixmapHandle(),
ref foreground, ref background,
(uint)hotspotX, (uint)hotspotY);
}
}
Xlib.XDefineCursor(display, window, cursor);
}
else if (type == CursorType.XC_inherit_parent)
{
Xlib.XUndefineCursor(display, window);
}
else
{
Xlib.XDefineCursor
(display, window, dpy.GetCursor(type));
}
}
finally
{
dpy.Unlock();
}
}
private void AddFrame(Window child)
{
const int frame_width = 3;
const int title_height = 20;
const int inner_border = 1;
if (this.WindowIndexByClient.ContainsKey(child))
{
return; // Window has already been framed.
}
var Name = String.Empty;
Xlib.XFetchName(this.display, child, ref Name);
Log.Debug($"Framing {Name}");
Xlib.XGetWindowAttributes(this.display, child, out var attr);
var title = Xlib.XCreateSimpleWindow(this.display, this.root, attr.x, attr.y, attr.width - (2 * inner_border),
(title_height - 2 * inner_border), inner_border, this.Colours.InactiveTitleColor, this.Colours.InactiveTitleBorder);
// Try to keep the child window in the same place, unless this would push the window decorations off screen.
var adjusted_x_loc = (attr.x - frame_width < 0) ? 0 : attr.x - frame_width;
var adjusted_y_loc = (attr.y - (title_height + frame_width) < 0) ? 0 : (attr.y - (title_height + frame_width));
var frame = Xlib.XCreateSimpleWindow(this.display, this.root, adjusted_x_loc,
adjusted_y_loc, attr.width, attr.height + title_height,
3, this.Colours.InactiveFrameColor, this.Colours.WindowBackground);
Xlib.XSelectInput(this.display, title, EventMask.ButtonPressMask | EventMask.ButtonReleaseMask
| EventMask.Button1MotionMask | EventMask.ExposureMask);
Xlib.XSelectInput(this.display, frame, EventMask.ButtonPressMask | EventMask.ButtonReleaseMask
| EventMask.Button1MotionMask | EventMask.FocusChangeMask | EventMask.SubstructureRedirectMask | EventMask.SubstructureNotifyMask);
Xlib.XDefineCursor(this.display, title, this.Cursors.TitleCursor);
Xlib.XDefineCursor(this.display, frame, this.Cursors.FrameCursor);
Xlib.XReparentWindow(this.display, title, frame, 0, 0);
Xlib.XReparentWindow(this.display, child, frame, 0, title_height);
Xlib.XMapWindow(this.display, title);
Xlib.XMapWindow(this.display, frame);
// Ensure the child window survives the untimely death of the window manager.
Xlib.XAddToSaveSet(this.display, child);
// Grab left click events from the client, so we can focus & raise on click
SetFocusTrap(child);
var wg = new WindowGroup {
child = child, frame = frame, title = title
};
this.WindowIndexByClient[child] = wg;
this.WindowIndexByTitle[title] = wg;
this.WindowIndexByFrame[frame] = wg;
}
public WindowManager(SimpleLogger.LogLevel level)
{
this.Log = new SimpleLogger(level);
var pDisplayText = Xlib.XDisplayName(null);
var DisplayText = Marshal.PtrToStringAnsi(pDisplayText);
if (DisplayText == String.Empty)
{
Log.Error("No display configured for X11; check the value of the DISPLAY variable is set correctly");
Environment.Exit(1);
}
Log.Info($"Connecting to X11 Display {DisplayText}");
this.display = Xlib.XOpenDisplay(null);
if (display == IntPtr.Zero)
{
Log.Error("Unable to open the default X display");
Environment.Exit(1);
}
this.root = Xlib.XDefaultRootWindow(display);
OnError = this.ErrorHandler;
Xlib.XSetErrorHandler(OnError);
// This will trigger a bad access error if another window manager is already running
Xlib.XSelectInput(this.display, this.root,
EventMask.SubstructureRedirectMask | EventMask.SubstructureNotifyMask |
EventMask.ButtonPressMask | EventMask.KeyPressMask);
Xlib.XSync(this.display, false);
// Setup cursors
this.Cursors.DefaultCursor = Xlib.XCreateFontCursor(this.display, FontCursor.XC_left_ptr);
this.Cursors.TitleCursor = Xlib.XCreateFontCursor(this.display, FontCursor.XC_fleur);
this.Cursors.FrameCursor = Xlib.XCreateFontCursor(this.display, FontCursor.XC_sizing);
Xlib.XDefineCursor(this.display, this.root, this.Cursors.DefaultCursor);
// Setup colours
this.Colours.DesktopBackground = GetPixelByName("black");
this.Colours.WindowBackground = GetPixelByName("white");
this.Colours.InactiveTitleBorder = GetPixelByName("light slate grey");
this.Colours.InactiveTitleColor = GetPixelByName("slate grey");
this.Colours.InactiveFrameColor = GetPixelByName("dark slate grey");
this.Colours.ActiveFrameColor = GetPixelByName("dark goldenrod");
this.Colours.ActiveTitleColor = GetPixelByName("gold");
this.Colours.ActiveTitleBorder = GetPixelByName("saddle brown");
Xlib.XSetWindowBackground(this.display, this.root, this.Colours.DesktopBackground);
Xlib.XClearWindow(this.display, this.root); // force a redraw with the new background color
}
