compress resize signals

typically buttons will call for this quite some, eg. when switching
workspace or (now) when altering the focused window. This compresses
various changes happening at the same time and re-layout the toolbar
only once for them

2 files changed, 17 insertions, 3 deletions

diff --git a/src/IconbarTool.cc b/src/IconbarTool.cc
index 84c91ef..6e561dc 100644
--- a/src/IconbarTool.cc
+++ b/src/IconbarTool.cc
@@ -287,6 +287,12 @@ IconbarTool::IconbarTool(const FbTk::FbWindow &parent, IconbarTheme &theme,
             FbTk::MemFun(*this, &IconbarTool::themeReconfigured));
     m_tracker.join(screen.reconfigureSig(),
             FbTk::MemFunIgnoreArgs(*this, &IconbarTool::updateIconifiedPattern));
+
+    m_resizeSig_timer.setTimeout(100 * FbTk::FbTime::IN_MILLISECONDS);
+    m_resizeSig_timer.fireOnce(true);
+    FbTk::RefCount<FbTk::Command<void> > ers(new FbTk::SimpleCommand<IconbarTool>(*this, &IconbarTool::emitResizeSig));
+    m_resizeSig_timer.setCommand(ers);
+
     themeReconfigured();
 }
 
@@ -360,7 +366,7 @@ void IconbarTool::setMode(string mode) {
     }
     reset();
 
-    resizeSig().emit();
+    m_resizeSig_timer.start();
 
     // unlock graphics update
     m_icon_container.setUpdateLock(false);
@@ -372,6 +378,10 @@ void IconbarTool::setMode(string mode) {
     m_menu.reconfigure();
 }
 
+void IconbarTool::emitResizeSig() {
+    resizeSig().emit();
+}
+
 unsigned int IconbarTool::width() const {
     return m_icon_container.width();
 }
@@ -427,7 +437,7 @@ void IconbarTool::update(UpdateReason reason, Focusable *win) {
             break;
     }
 
-    resizeSig().emit();
+    m_resizeSig_timer.start();
     const unsigned int maxsize = (m_icon_container.orientation() & 1) ? height() : width();
     m_icon_container.setMaxTotalSize(maxsize);
     m_icon_container.setMaxSizePerClient(maxsize/std::max(1, m_icon_container.size()));
@@ -482,7 +492,7 @@ void IconbarTool::insertWindow(Focusable &win, int pos) {
     }
 
     m_icon_container.insertItem(button, pos);
-    m_tracker.join(button->titleChanged(), FbTk::MemFun(resizeSig(), &FbTk::Signal<>::emit));
+    m_tracker.join(button->titleChanged(), FbTk::MemFun(m_resizeSig_timer, &FbTk::Timer::start));
 }
 
 void IconbarTool::reset() {
diff --git a/src/IconbarTool.hh b/src/IconbarTool.hh
index 6044005..a461ce5 100644
--- a/src/IconbarTool.hh
+++ b/src/IconbarTool.hh
@@ -29,6 +29,7 @@
 #include "FbTk/Container.hh"
 #include "FbTk/CachedPixmap.hh"
 #include "FbTk/Resource.hh"
+#include "FbTk/Timer.hh"
 
 #include <map>
 
@@ -104,6 +105,9 @@ private:
 
     void themeReconfigured();
 
+    FbTk::Timer m_resizeSig_timer;
+    void emitResizeSig();
+
     BScreen &m_screen;
     FbTk::Container m_icon_container;
     IconbarTheme &m_theme;