Add Fl::screen_count() and Fl::screen_xywh() APIs to support multi-

screen displays (currently only X11 support with Xinerama)



git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4223 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 147 insertions, 0 deletions

diff --git a/src/screen_xywh.cxx b/src/screen_xywh.cxx
new file mode 100644
index 000000000..947f01910
--- /dev/null
+++ b/src/screen_xywh.cxx
@@ -0,0 +1,147 @@
+//
+// "$Id$"
+//
+// Screen/monitor bounding box API for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2005 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
+//
+
+
+#include <FL/Fl.H>
+#include <FL/x.H>
+#include <config.h>
+
+#ifdef HAVE_XINERAMA
+#  include <X11/extensions/Xinerama.h>
+#endif // HAVE_XINERAMA
+
+
+// Return the number of screens...
+int Fl::screen_count() {
+}
+
+// Return the screen bounding rect for the given mouse position...
+void Fl::screen_xywh(int &x, int &y, int &w, int &h, int mx, int my) {
+#ifdef WIN32
+#elif defined(__APPLE__)
+#elif defined(HAVE_XINERAMA)
+  if (!fl_display) fl_open_display();
+
+  if (XineramaIsActive(fl_display)) {
+    int			i,
+			num_rects;
+    XineramaScreenInfo	*rects;
+
+
+    rects = XineramaQueryScreens(fl_display, &num_rects);
+
+#  ifdef DEBUG
+    printf("num_rects = %d\n", num_rects);
+    printf("window_->x_root() = %d, y_root() = %d\n",
+           window_->x_root(), window_->y_root());
+#  endif // DEBUG
+
+    for (i = 0; i < num_rects; i ++) {
+#  ifdef DEBUG
+      printf("rects[%d] = [%d %d %d %d]\n", i,
+	     rects[i].x_org, rects[i].y_org, rects[i].width,
+	     rects[i].height);
+#  endif // DEBUG
+
+      if (mx >= rects[i].x_org &&
+	  mx < (rects[i].x_org + rects[i].width) &&
+	  my >= rects[i].y_org &&
+	  my < (rects[i].y_org + rects[i].height))
+      {
+	x = rects[i].x_org;
+	y = rects[i].y_org;
+	w = rects[i].width;
+	h = rects[i].height;
+	break;
+      }
+    }
+
+    XFree(rects);
+  }
+#endif // WIN32
+
+  x = Fl::x();
+  y = Fl::y();
+  w = Fl::w();
+  h = Fl::h();
+}
+
+// Return the screen bounding rect for the given screen...
+void Fl::screen_xywh(int &x, int &y, int &w, int &h, int n) {
+#ifdef WIN32
+#elif defined(__APPLE__)
+#elif defined(HAVE_XINERAMA)
+  if (!fl_display) fl_open_display();
+
+  if (XineramaIsActive(fl_display)) {
+    int			i,
+			num_rects;
+    XineramaScreenInfo	*rects;
+
+
+    rects = XineramaQueryScreens(fl_display, &num_rects);
+
+#  ifdef DEBUG
+    printf("num_rects = %d\n", num_rects);
+    printf("window_->x_root() = %d, y_root() = %d\n",
+           window_->x_root(), window_->y_root());
+#  endif // DEBUG
+
+    for (i = 0; i < num_rects; i ++) {
+#  ifdef DEBUG
+      printf("rects[%d] = [%d %d %d %d]\n", i,
+	     rects[i].x_org, rects[i].y_org, rects[i].width,
+	     rects[i].height);
+#  endif // DEBUG
+
+      if (mx >= rects[i].x_org &&
+	  mx < (rects[i].x_org + rects[i].width) &&
+	  my >= rects[i].y_org &&
+	  my < (rects[i].y_org + rects[i].height))
+      {
+	x = rects[i].x_org;
+	y = rects[i].y_org;
+	w = rects[i].width;
+	h = rects[i].height;
+	break;
+      }
+    }
+
+    XFree(rects);
+  }
+#endif // WIN32
+
+  x = Fl::x();
+  y = Fl::y();
+  w = Fl::w();
+  h = Fl::h();
+}
+
+
+//
+// End of "$Id$".
+//