>
> > I am writing a plugin for a system that supplies an X11
> > window ID and expects the plugin to render its UI inside
> > that. I want to, therefore, use CreatedWindow such that I am
> > able to use FLTK in it. The following is a testcase that
> > blows up in my face just like the real thing:
I lost the orginal message, but my eye just fell on this part.
I've done such thing before with fltk-1.3, but was never able
to run good tests. I just solved my problem.
I added an Fl_Window->attach(xid) member, to attach to an existing
X window. Fl_Window->detach() does the opposite. I leaves a window.
Kurt
Index: fltk-1.3.x-r8365/FL/Fl_Window.H
===================================================================
--- fltk-1.3.x-r8365.orig/FL/Fl_Window.H 2011-02-09 12:46:25.000000000
+0100
+++ fltk-1.3.x-r8365/FL/Fl_Window.H 2011-02-09 12:46:46.000000000 +0100
@@ -339,6 +339,17 @@
void icon(const char *xpm[]);
/**
+ API for attaching/detaching windows on X11
+ attach() is to be called _before_ show(), and may resize the window.
+ detach() removes some event from the mask, so other processes
+ may 'attach()' for full functionality.
+ @primary: indicate that the caller should get all events,
+ event those that can only be delivered to 1 client
+ */
+ void detach(void);
+ void attach(long xid, int primary=1);
+
+ /**
Returns non-zero if show() has been called (but not hide()
). You can tell if a window is iconified with (w->shown()
&& !w->visible()).
Index: fltk-1.3.x-r8365/src/Fl_mac.cxx
===================================================================
--- fltk-1.3.x-r8365.orig/src/Fl_mac.cxx 2010-11-29 19:18:27.000000000
+0100
+++ fltk-1.3.x-r8365/src/Fl_mac.cxx 2011-02-09 12:46:46.000000000 +0100
@@ -2395,6 +2395,15 @@
}
+void Fl_Window::detach(void) {
+ // stub function in win32
+}
+
+void Fl_Window::attach(long xid, int primary) {
+ // stub function in win32
+}
+
+
/**
* resize a window
*/
Index: fltk-1.3.x-r8365/src/Fl_win32.cxx
===================================================================
--- fltk-1.3.x-r8365.orig/src/Fl_win32.cxx 2011-02-02 13:42:47.000000000
+0100
+++ fltk-1.3.x-r8365/src/Fl_win32.cxx 2011-02-09 12:46:46.000000000 +0100
@@ -1811,6 +1811,14 @@
return fl_gc;
}
+void Fl_Window::detach(void) {
+ // stub function in win32
+}
+
+void Fl_Window::attach(long xid, int primary) {
+ // stub function in win32
+}
+
// make X drawing go into this window (called by subclass flush() impl.)
void Fl_Window::make_current() {
fl_GetDC(fl_xid(this));
Index: fltk-1.3.x-r8365/src/Fl_x.cxx
===================================================================
--- fltk-1.3.x-r8365.orig/src/Fl_x.cxx 2011-02-09 12:46:38.000000000 +0100
+++ fltk-1.3.x-r8365/src/Fl_x.cxx 2011-02-09 12:46:46.000000000 +0100
@@ -1553,6 +1553,38 @@
|EnterWindowMask|LeaveWindowMask
|PointerMotionMask;
+// mask of events that only 1 client can receive
+static const int uniqueEventMask =
+ButtonPressMask|ButtonReleaseMask
+;
+
+void Fl_Window::detach(void) {
+ if (parent() || !i)
+ return;
+
+ XSelectInput(fl_display, fl_xid(this), XEventMask & ~uniqueEventMask);
+}
+
+void Fl_Window::attach(long xid, int primary) {
+ XWindowAttributes wa;
+ long evmask = XEventMask;
+
+ if (!primary)
+ evmask &= ~uniqueEventMask;
+
+ fl_open_display();
+ if(XGetWindowAttributes(fl_display, xid, &wa))
+ this->resize(wa.x, wa.y, wa.width, wa.height);
+ (Fl_X::set_xid(this, xid))->setwindow(this);
+ XSelectInput(fl_display, xid, evmask);
+
+ this->damage(FL_DAMAGE_EXPOSE, 0, 0, wa.width, wa.height);
+ if (wa.map_state == IsViewable) {
+ this->set_visible();
+ Fl_X::i(this)->wait_for_expose = 0;
+ }
+}
+
void Fl_X::make_xid(Fl_Window* win, XVisualInfo *visual, Colormap colormap)
{
Fl_Group::current(0); // get rid of very common user bug: forgot end()
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