@@ -22,6 +22,8 @@ 
 #include "ArrowButton.hh"
 #include "ButtonTheme.hh"
 
+#include "FbTk/Util.hh"
+
 ArrowButton::ArrowButton(FbTk::FbDrawable::TriangleType arrow_type,
                          const FbTk::FbWindow &parent,
                          int x, int y,
@@ -92,6 +94,6 @@ const ButtonTheme &btheme = static_cast<const ButtonTheme &>(theme);
 
     m_arrowscale = btheme.scale();
     if (m_arrowscale == 0) m_arrowscale = 250; // default is 0 => 300
-    else if (m_arrowscale < 100) m_arrowscale = 100; // otherwise clamp
-    else if (m_arrowscale > 100000) m_arrowscale = 100000; // clamp below overflow when *100
+
+    m_arrowscale = FbTk::Util::clamp(m_arrowscale, 100, 100000);
 }

@@ -35,6 +35,7 @@ #include "FbTk/CommandParser.hh"
 #include "FbTk/I18n.hh"
 #include "FbTk/stringstream.hh"
 #include "FbTk/StringUtil.hh"
+#include "FbTk/Util.hh"
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -250,8 +251,7 @@ void SetHeadCmd::real_execute() {
     int num = m_head;
     int total = fbwindow().screen().numHeads();
     if (num < 0) num += total + 1;
-    if (num < 1) num = 1;
-    if (num > total) num = total;
+    num = FbTk::Util::clamp(num, 1, total);
     fbwindow().setOnHead(num);
 }
 
@@ -259,8 +259,7 @@ void SendToWorkspaceCmd::real_execute() {
     int num = m_workspace_num;
     int total = fbwindow().screen().numberOfWorkspaces();
     if (num < 0) num += total + 1;
-    if (num < 1) num = 1;
-    if (num > total) num = total;
+    num = FbTk::Util::clamp(num, 1, total);
     fbwindow().screen().sendToWorkspace(num-1, &fbwindow(), m_take);
 }
 
@@ -281,8 +280,7 @@ 
 void GoToTabCmd::real_execute() {
     int num = m_tab_num;
     if (num < 0) num += fbwindow().numClients() + 1;
-    if (num < 1) num = 1;
-    if (num > fbwindow().numClients()) num = fbwindow().numClients();
+    num = FbTk::Util::clamp(num, 1, fbwindow().numClients());
 
     FluxboxWindow::ClientList::iterator it = fbwindow().clientList().begin();
 
@@ -670,22 +668,13 @@ fbwindow().setDefaultAlpha();
         return;
     }
 
-    int new_alpha;
-    if (m_relative) {
-        new_alpha = fbwindow().getFocusedAlpha() + m_focus;
-        if (new_alpha < 0) new_alpha = 0;
-        if (new_alpha > 255) new_alpha = 255;
-        fbwindow().setFocusedAlpha(new_alpha);
-    } else
-        fbwindow().setFocusedAlpha(m_focus);
+    fbwindow().setFocusedAlpha(m_relative 
+            ?  FbTk::Util::clamp(fbwindow().getFocusedAlpha() + m_focus, 0, 255)
+            : m_focus);
 
-    if (m_un_relative) {
-        new_alpha = fbwindow().getUnfocusedAlpha() + m_unfocus;
-        if (new_alpha < 0) new_alpha = 0;
-        if (new_alpha > 255) new_alpha = 255;
-        fbwindow().setUnfocusedAlpha(new_alpha);
-    } else
-        fbwindow().setUnfocusedAlpha(m_unfocus);
+    fbwindow().setUnfocusedAlpha(m_un_relative
+            ? FbTk::Util::clamp(fbwindow().getUnfocusedAlpha() + m_unfocus, 0, 255)
+            : m_unfocus);
 }
 
 REGISTER_COMMAND_WITH_ARGS(matches, MatchCmd, bool);

@@ -64,6 +64,7 @@ TypeAhead.hh SearchResult.hh SearchResult.cc ITypeAheadable.hh \
 	Select2nd.hh STLUtil.hh \
 	CachedPixmap.hh CachedPixmap.cc \
 	Slot.hh Signal.hh MemFun.hh RelaySignal.hh SelectArg.hh \
+	Util.hh \
 	${xpm_SOURCE} \
 	${xft_SOURCE} \
 	${xmb_SOURCE} \

@@ -26,6 +26,8 @@ #include "XLayerItem.hh"
 #include "App.hh"
 #include "FbWindow.hh"
 
+#include "Util.hh"
+
 using namespace FbTk;
 
 MultLayers::MultLayers(int numlayers) :
@@ -56,11 +58,7 @@ 
 }
 
 void MultLayers::addToTop(XLayerItem &item, int layernum) {
-    if (layernum < 0)
-        layernum = 0;
-    else if (layernum >= static_cast<signed>(m_layers.size()))
-        layernum = m_layers.size()-1;
-
+    layernum = FbTk::Util::clamp(layernum, 0, static_cast<signed>(m_layers.size()) - 1);
     m_layers[layernum]->insert(item);
     restack();
 }
@@ -108,12 +106,7 @@ // do nothing if the item already is in the requested layer
     if (curr_layer.getLayerNum() == layernum)
         return;
 
-    // clamp layer number
-    if (layernum < 0)
-        layernum = 0;
-    else if (layernum >= static_cast<signed>(m_layers.size()))
-        layernum = m_layers.size()-1;
-    // remove item from old layer and insert it into the
+    layernum = FbTk::Util::clamp(layernum, 0, static_cast<signed>(m_layers.size()) - 1);
     item.setLayer(*m_layers[layernum]);
 }
 

@@ -0,0 +1,43 @@ 
+// Util.hh for fluxbox 
+// Copyright (c) 2010 Mathias Gumz (akira at fluxbox org)
+// 
+// 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.
+
+#ifndef FBTK_UTIL_HH
+#define FBTK_UTIL_HH
+
+namespace FbTk {
+
+namespace Util {
+
+template<typename T>
+inline T clamp(const T& value, const T& lower, const T& upper) {
+    if (value < lower)
+        return lower;
+    else if (value > upper)
+        return upper;
+    return value;
+}
+
+} // end namespace Util
+
+} // end namespace FbTk
+
+
+#endif // FBTK_UTIL_HH

@@ -21,6 +21,7 @@ // DEALINGS IN THE SOFTWARE.
 
 #include "FbWinFrameTheme.hh"
 #include "FbTk/App.hh"
+#include "FbTk/Util.hh"
 
 #include "IconbarTheme.hh"
 
@@ -88,16 +89,10 @@ return false;
 }
 
 void FbWinFrameTheme::reconfigTheme() {
-    if (*m_bevel_width > 20)
-        *m_bevel_width = 20;
-    else if (*m_bevel_width < 0)
-        *m_bevel_width = 0;
-
-    if (*m_handle_width > 200)
-        *m_handle_width = 200;
-    else if (*m_handle_width < 0)
+    *m_bevel_width = FbTk::Util::clamp(*m_bevel_width, 0, 20);
+    if (*m_handle_width < 0)
         *m_handle_width = 1;
-
+    *m_handle_width = FbTk::Util::clamp(*m_handle_width, 0, 200);
     m_button_pic_gc.setForeground(*m_button_color);
     m_iconbar_theme.reconfigTheme();
 }

@@ -47,6 +47,7 @@ #include "FbTk/SimpleCommand.hh"
 #include "FbTk/ImageControl.hh"
 #include "FbTk/MacroCommand.hh"
 #include "FbTk/MenuSeparator.hh"
+#include "FbTk/Util.hh"
 
 #include <typeinfo>
 #include <iterator>
@@ -389,12 +390,8 @@ return;
     }
 
     m_icon_container.setAlignment(*m_rc_alignment);
-    // clamp to normal values
-    if (*m_rc_client_width < 1)
-        *m_rc_client_width = 10;
-    else if (*m_rc_client_width > 400)
-        *m_rc_client_width = 400;
 
+    *m_rc_client_width = FbTk::Util::clamp(*m_rc_client_width, 10, 400);
     m_icon_container.setMaxSizePerClient(*m_rc_client_width);
 
     if (subj == &m_focused_theme.reconfigSig() ||

@@ -41,6 +41,7 @@ #include "FbTk/stringstream.hh"
 #include "FbTk/Transparent.hh"
 #include "FbTk/AutoReloadHelper.hh"
 #include "FbTk/RefCount.hh"
+#include "FbTk/Util.hh"
 
 #ifdef HAVE_CSTRING
   #include <cstring>
@@ -512,28 +513,18 @@ else
                     app.rememberDecostate((unsigned int)deco);
             } else if (str_key == "alpha") {
                 int focused_a, unfocused_a;
-                if (sscanf(str_label.c_str(), "%i %i", &focused_a, &unfocused_a) == 2)
-                {
-                    // clamp;
-                    if (focused_a > 255)
-                        focused_a = 255;
-                    if (unfocused_a > 255)
-                        unfocused_a = 255;
-                    if (focused_a <= 0)
-                        focused_a = 0;
-                    if (unfocused_a <= 0)
-                        unfocused_a = 0;
-
+                switch (sscanf(str_label.c_str(), "%i %i", &focused_a, &unfocused_a)) {
+                case 1: // 'alpha <focus>'
+                    unfocused_a = focused_a;
+                case 2: // 'alpha <focus> <unfocus>'
+                    focused_a = FbTk::Util::clamp(focused_a, 0, 255);
+                    unfocused_a = FbTk::Util::clamp(unfocused_a, 0, 255);
                     app.rememberAlpha(focused_a, unfocused_a);
-                } else if (sscanf(str_label.c_str(), "%i", &focused_a) == 1) {
-                    if (focused_a > 255)
-                        focused_a = 255;
-                    if (focused_a <= 0)
-                        focused_a = 0;
-                    app.rememberAlpha(focused_a, focused_a);
+                    break;
+                default:
+                    had_error = true;
+                    break;
                 }
-                else
-                    had_error = 1;
             } else if (str_key == "sticky") {
                 app.rememberStuckstate((strcasecmp(str_label.c_str(), "yes") == 0));
             } else if (str_key == "minimized") {

@@ -73,6 +73,7 @@ #include "FbTk/Compose.hh"
 #include "FbTk/FbString.hh"
 #include "FbTk/STLUtil.hh"
 #include "FbTk/KeyUtil.hh"
+#include "FbTk/Util.hh"
 
 //use GNU extensions
 #ifndef _GNU_SOURCE
@@ -202,6 +203,10 @@ private:
     BScreen &m_screen;
     FbWinFrame::TabPlacement m_place;
 };
+
+void clampMenuDelay(int& delay) {
+    delay = FbTk::Util::clamp(delay, 0, 5000);
+}
 
 } // end anonymous namespace
 
@@ -453,11 +458,8 @@ 
     focusedWinFrameTheme()->setAlpha(*resource.focused_alpha);
     unfocusedWinFrameTheme()->setAlpha(*resource.unfocused_alpha);
     m_menutheme->setAlpha(*resource.menu_alpha);
-    // clamp values
-    if (*resource.menu_delay > 5000)
-        *resource.menu_delay = 5000;
-    if (*resource.menu_delay < 0)
-        *resource.menu_delay = 0;
+
+    clampMenuDelay(*resource.menu_delay);
 
     m_menutheme->setDelay(*resource.menu_delay);
 
@@ -905,11 +907,7 @@ focusedWinFrameTheme()->setAlpha(*resource.focused_alpha);
     unfocusedWinFrameTheme()->setAlpha(*resource.unfocused_alpha);
     m_menutheme->setAlpha(*resource.menu_alpha);
 
-    // clamp values
-    if (*resource.menu_delay > 5000)
-        *resource.menu_delay = 5000;
-    if (*resource.menu_delay < 0)
-        *resource.menu_delay = 0;
+    clampMenuDelay(*resource.menu_delay);
 
     m_menutheme->setDelay(*resource.menu_delay);
 
@@ -2138,15 +2136,8 @@ int hy = getHeadY(head);
     int hw = getHeadWidth(head);
     int hh = getHeadHeight(head);
 
-    if (x + w > hx + hw)
-        x = hx + hw - w;
-    if (y + h > hy + hh)
-        y = hy + hh - h;
-
-    if (x < hx)
-        x = hx;
-    if (y < hy)
-       y = hy;
+    x = FbTk::Util::clamp(x, hx, hx + hw - w);
+    y = FbTk::Util::clamp(y, hy, hy + hh - h);
 
     return make_pair(x,y);
 }

@@ -246,10 +246,8 @@ if (min_aspect_y > 0 && w * min_aspect_y < min_aspect_x * h)
             w = increaseToMultiple(h * min_aspect_x / min_aspect_y, width_inc);
     }
 
-    unsigned int max_w = make_fit && (width < max_width || max_width == 0) ?
-                         width : max_width;
-    unsigned int max_h = make_fit && (height < max_height || max_height == 0) ?
-                         height : max_height;
+    unsigned int max_w = (make_fit && (width < max_width || max_width == 0)) ?  width : max_width;
+    unsigned int max_h = (make_fit && (height < max_height || max_height == 0)) ?  height : max_height;
 
     // Check maximum size
     if (max_w > 0 && w + base_width > max_w)