root window

1 files changed, 63 insertions, 0 deletions

diff --git a/src/FbRootWindow.cc b/src/FbRootWindow.cc
new file mode 100644
index 0000000..d555f7f
--- /dev/null
+++ b/src/FbRootWindow.cc
@@ -0,0 +1,63 @@
+// FbRootWindow.cc
+// Copyright (c) 2003 Henrik Kinnunen (fluxgen<at>users.sourceforge.net)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: FbRootWindow.cc,v 1.1 2003/05/10 22:50:19 fluxgen Exp $
+
+#include "FbRootWindow.hh"
+#include "App.hh"
+
+#include <X11/Xutil.h>
+
+FbRootWindow::FbRootWindow(int screen_num):
+    FbTk::FbWindow(RootWindow(FbTk::App::instance()->display(), screen_num)),
+    m_visual(0),
+    m_colormap(0) {
+
+    Display *disp = FbTk::App::instance()->display();
+
+    // search for a TrueColor Visual... if we can't find one... we will use the
+    // default visual for the screen
+    XVisualInfo vinfo_template, *vinfo_return;
+    int vinfo_nitems;
+
+    vinfo_template.screen = screen_num;
+    vinfo_template.c_class = TrueColor;
+    if ((vinfo_return = XGetVisualInfo(disp,
+                                       VisualScreenMask | VisualClassMask,
+                                       &vinfo_template, &vinfo_nitems)) &&
+        vinfo_nitems > 0) {
+
+        for (int i = 0; i < vinfo_nitems; i++) {
+            if (DefaultDepth(disp, screen_num) < vinfo_return[i].depth)
+                m_visual = vinfo_return[i].visual;
+        }
+
+        XFree(vinfo_return);
+    }
+
+    if (m_visual) {
+        m_colormap = XCreateColormap(disp, window(),
+                                     m_visual, AllocNone);
+    } else {
+        m_visual = DefaultVisual(disp, screen_num);
+        m_colormap = DefaultColormap(disp, screen_num);
+    }
+}