Include a stripped-down version of FLTK in tree and add a USE_INCLUDED_FLTK option to build against it.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4603 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/fltk/src/Fl_Overlay_Window.cxx b/common/fltk/src/Fl_Overlay_Window.cxx
new file mode 100644
index 0000000..f75a3d9
--- /dev/null
+++ b/common/fltk/src/Fl_Overlay_Window.cxx
@@ -0,0 +1,176 @@
+//
+// "$Id: Fl_Overlay_Window.cxx 8198 2011-01-06 10:24:58Z manolo $"
+//
+// Overlay window code for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2010 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+// http://www.fltk.org/str.php
+//
+
+/** \fn virtual void Fl_Overlay_Window::draw_overlay() = 0
+ You must subclass Fl_Overlay_Window and provide this method.
+ It is just like a draw() method, except it draws the overlay.
+ The overlay will have already been "cleared" when this is called. You
+ can use any of the routines described in <FL/fl_draw.H>.
+*/
+
+// A window using double-buffering and able to draw an overlay
+// on top of that. Uses the hardware to draw the overlay if
+// possible, otherwise it just draws in the front buffer.
+
+#include <config.h>
+#include <FL/Fl.H>
+#include <FL/Fl_Overlay_Window.H>
+#include <FL/fl_draw.H>
+#include <FL/x.H>
+
+void Fl_Overlay_Window::show() {
+ Fl_Double_Window::show();
+ if (overlay_ && overlay_ != this) overlay_->show();
+}
+
+void Fl_Overlay_Window::hide() {
+ Fl_Double_Window::hide();
+}
+
+void Fl_Overlay_Window::flush() {
+#ifdef BOXX_BUGS
+ if (overlay_ && overlay_ != this && overlay_->shown()) {
+ // all drawing to windows hidden by overlay windows is ignored, fix this
+ XUnmapWindow(fl_display, fl_xid(overlay_));
+ Fl_Double_Window::flush(0);
+ XMapWindow(fl_display, fl_xid(overlay_));
+ return;
+ }
+#endif
+ int erase_overlay = (damage()&FL_DAMAGE_OVERLAY) | (overlay_ == this);
+ clear_damage((uchar)(damage()&~FL_DAMAGE_OVERLAY));
+ Fl_Double_Window::flush(erase_overlay);
+ if (overlay_ == this) draw_overlay();
+}
+
+void Fl_Overlay_Window::resize(int X, int Y, int W, int H) {
+ Fl_Double_Window::resize(X,Y,W,H);
+ if (overlay_ && overlay_!=this) overlay_->resize(0,0,w(),h());
+}
+
+/**
+ Destroys the window and all child widgets.
+*/
+Fl_Overlay_Window::~Fl_Overlay_Window() {
+ hide();
+// delete overlay; this is done by ~Fl_Group
+}
+
+#if !HAVE_OVERLAY
+
+int Fl_Overlay_Window::can_do_overlay() {return 0;}
+
+/**
+ Call this to indicate that the overlay data has changed and needs to
+ be redrawn. The overlay will be clear until the first time this is
+ called, so if you want an initial display you must call this after
+ calling show().
+*/
+void Fl_Overlay_Window::redraw_overlay() {
+ overlay_ = this;
+ clear_damage((uchar)(damage()|FL_DAMAGE_OVERLAY));
+ Fl::damage(FL_DAMAGE_CHILD);
+}
+
+#else
+
+extern XVisualInfo *fl_find_overlay_visual();
+extern XVisualInfo *fl_overlay_visual;
+extern Colormap fl_overlay_colormap;
+extern unsigned long fl_transparent_pixel;
+static GC gc; // the GC used by all X windows
+extern uchar fl_overlay; // changes how fl_color(x) works
+
+class _Fl_Overlay : public Fl_Window {
+ friend class Fl_Overlay_Window;
+ void flush();
+ void show();
+public:
+ _Fl_Overlay(int x, int y, int w, int h) :
+ Fl_Window(x,y,w,h) {set_flag(INACTIVE);}
+};
+
+int Fl_Overlay_Window::can_do_overlay() {
+ return fl_find_overlay_visual() != 0;
+}
+
+void _Fl_Overlay::show() {
+ if (shown()) {Fl_Window::show(); return;}
+ fl_background_pixel = int(fl_transparent_pixel);
+ Fl_X::make_xid(this, fl_overlay_visual, fl_overlay_colormap);
+ fl_background_pixel = -1;
+ // find the outermost window to tell wm about the colormap:
+ Fl_Window *w = window();
+ for (;;) {Fl_Window *w1 = w->window(); if (!w1) break; w = w1;}
+ XSetWMColormapWindows(fl_display, fl_xid(w), &(Fl_X::i(this)->xid), 1);
+}
+
+void _Fl_Overlay::flush() {
+ fl_window = fl_xid(this);
+ if (!gc) {
+ gc = XCreateGC(fl_display, fl_xid(this), 0, 0);
+ }
+ fl_gc = gc;
+#if defined(FLTK_USE_CAIRO)
+ if (Fl::cairo_autolink_context()) Fl::cairo_make_current(this); // capture gc changes automatically to update the cairo context adequately
+#endif
+ fl_overlay = 1;
+ Fl_Overlay_Window *w = (Fl_Overlay_Window *)parent();
+ Fl_X *myi = Fl_X::i(this);
+ if (damage() != FL_DAMAGE_EXPOSE) XClearWindow(fl_display, fl_xid(this));
+ fl_clip_region(myi->region); myi->region = 0;
+ w->draw_overlay();
+ fl_overlay = 0;
+}
+
+void Fl_Overlay_Window::redraw_overlay() {
+ if (!fl_display) return; // this prevents fluid -c from opening display
+ if (!overlay_) {
+ if (can_do_overlay()) {
+ Fl_Group::current(this);
+ overlay_ = new _Fl_Overlay(0,0,w(),h());
+ Fl_Group::current(0);
+ } else {
+ overlay_ = this; // fake the overlay
+ }
+ }
+ if (shown()) {
+ if (overlay_ == this) {
+ clear_damage(damage()|FL_DAMAGE_OVERLAY);
+ Fl::damage(FL_DAMAGE_CHILD);
+ } else if (!overlay_->shown())
+ overlay_->show();
+ else
+ overlay_->redraw();
+ }
+}
+
+#endif
+
+//
+// End of "$Id: Fl_Overlay_Window.cxx 8198 2011-01-06 10:24:58Z manolo $".
+//