make "force pseudotransparency" menu item work immediately

ChangeLog

@@ -1,6 +1,10 @@
  (Format: Year/Month/Day)
 Changes for 1.0rc3:
 *07/01/06:
+   * Changing session.forcePseudotransparency no longer requires restart,
+     also a little code cleanup in FbTk/Transparent.cc/hh
+     (Mark)
+     Slit.cc Menu.cc Toolbar.cc FbWinFrame.cc fluxbox.cc
    * Move triangle drawing into a generic function in FbDrawable (Simon)
      Make submenu triangles in MenuItems proportional to the icon size
      (alternate implementation of sf.net patch #1526813)

src/FbTk/Menu.cc

@@ -1099,14 +1099,18 @@ void Menu::keyPressEvent(XKeyEvent &event) {
 
 void Menu::reconfigure() {
 
-    if (FbTk::Transparent::haveComposite())
+    if (FbTk::Transparent::haveComposite()) {
         menu.window.setOpaque(alpha());
+        menu.title.setAlpha(255);
+        menu.frame.setAlpha(255);
+    } else {
+        menu.window.setOpaque(255);
+        menu.title.setAlpha(alpha());
+        menu.frame.setAlpha(alpha());
+    }
 
     m_need_update = true; // redraw items
 
-    menu.title.setAlpha(alpha());
-    menu.frame.setAlpha(alpha());
-
     menu.window.setBorderColor(theme().borderColor());
     menu.title.setBorderColor(theme().borderColor());
     menu.frame.setBorderColor(theme().borderColor());

src/FbTk/Transparent.cc

@@ -112,6 +112,7 @@ namespace FbTk {
 bool Transparent::s_init = false;
 bool Transparent::s_render = false;
 bool Transparent::s_composite = false;
+bool Transparent::s_use_composite = false;
 
 void Transparent::init() {
     Display *disp = FbTk::App::instance()->display();
@@ -119,48 +120,35 @@ void Transparent::init() {
     int major_opcode, first_event, first_error;
     if (XQueryExtension(disp, "RENDER",
                         &major_opcode,
-                        &first_event, &first_error) == False) {
-        s_render = false;
-        s_composite = false;
-    } else { // we have RENDER support
+                        &first_event, &first_error)) {
+        // we have XRENDER support
         s_render = true;
 
         if (XQueryExtension(disp, "Composite",
                             &major_opcode,
-                            &first_event, &first_error) == False) {
-            s_composite = false;
-        } else { // we have Composite support
+                            &first_event, &first_error)) {
+            // we have Composite support
             s_composite = true;
+            s_use_composite = true;
         }
     }
     s_init = true;
 }
 
-void Transparent::usePseudoTransparent(bool no_composite) {
-    if (s_composite != no_composite)
-        return;
-
-    s_init = false;
-    init(); // only use render if we have it
-
-    if (no_composite)
-        s_composite = false;
+void Transparent::usePseudoTransparent(bool force) {
+    if (!s_init)
+        init();
+    s_use_composite = (!force && s_composite);
 }
 
 bool Transparent::haveComposite(bool for_real) {
-    if (for_real) {
-        Display *disp = FbTk::App::instance()->display();
-        int major_opcode, first_event, first_error;
-
-        return (XQueryExtension(disp, "Composite",
-                               &major_opcode,
-                               &first_event, &first_error) == True);
-    } else {
-        if (!s_init)
-            init();
+    if (!s_init)
+        init();
 
+    if (for_real)
         return s_composite;
-    }
+    else
+        return s_use_composite;
 }
 
 Transparent::Transparent(Drawable src, Drawable dest, unsigned char alpha, int screen_num):

src/FbTk/Transparent.hh

@@ -53,7 +53,7 @@ public:
 
     static bool haveComposite(bool for_real = false);
     static bool haveRender() { if (!s_init) init(); return s_render; }
-    static void usePseudoTransparent(bool no_composite);
+    static void usePseudoTransparent(bool force);
 
 private:
     void freeAlpha();
@@ -67,6 +67,7 @@ private:
     static bool s_init;
     static bool s_render; ///< wheter we have RENDER support
     static bool s_composite; ///< wheter we have Composite support
+    static bool s_use_composite; ///< whether or not to use Composite
     static void init();
 };
 

src/FbWinFrame.cc

@@ -508,9 +508,11 @@ void FbWinFrame::setFocus(bool newvalue) {
     if (FbTk::Transparent::haveRender() && theme().focusedAlpha() != theme().unfocusedAlpha()) {
         unsigned char alpha = (m_focused?theme().focusedAlpha():theme().unfocusedAlpha());
         if (FbTk::Transparent::haveComposite()) {
+            m_tab_container.setAlpha(255);
             m_window.setOpaque(alpha);
         } else {
             m_tab_container.setAlpha(alpha);
+            m_window.setOpaque(255);
         }
     }
 
@@ -521,9 +523,7 @@ void FbWinFrame::setFocus(bool newvalue) {
             applyActiveLabel(*m_current_label);
     }
 
-    applyTitlebar();
-    applyHandles();
-    applyTabContainer();
+    applyAll();
     clearAll();
 }
 
@@ -1053,6 +1053,18 @@ void FbWinFrame::reconfigure() {
 
     // render the theme
     if (isVisible()) {
+        // update transparency settings
+        if (FbTk::Transparent::haveRender()) {
+            unsigned char alpha =
+                (m_focused ? theme().focusedAlpha() : theme().unfocusedAlpha());
+            if (FbTk::Transparent::haveComposite()) {
+                m_tab_container.setAlpha(255);
+                m_window.setOpaque(alpha);
+            } else {
+                m_tab_container.setAlpha(alpha);
+                m_window.setOpaque(255);
+            }
+        }
         renderAll();
         applyAll();
         clearAll();
@@ -1391,13 +1403,6 @@ void FbWinFrame::applyButtons() {
 
 void FbWinFrame::init() {
 
-    if (FbTk::Transparent::haveComposite()) {
-        if (m_focused)
-            m_window.setOpaque(theme().focusedAlpha());
-        else
-            m_window.setOpaque(theme().unfocusedAlpha());
-    }
-
     if (theme().handleWidth() == 0)
         m_use_handle = false;
 

src/Slit.cc

@@ -707,10 +707,13 @@ void Slit::reconfigure() {
     if (tmp)
         image_ctrl.removeImage(tmp);
 
+    // could have changed types, so we must set both
     if (FbTk::Transparent::haveComposite()) {
+        frame.window.setAlpha(255);
         frame.window.setOpaque(*m_rc_alpha);
     } else {
         frame.window.setAlpha(*m_rc_alpha);
+        frame.window.setOpaque(255);
     }
     // reposition clears the bg
     reposition();

src/Toolbar.cc

@@ -477,9 +477,12 @@ void Toolbar::reconfigure() {
     frame.window.setBorderWidth(theme().border().width());
 
     bool have_composite = FbTk::Transparent::haveComposite();
+    // have_composite could have changed, so we need to change both
     if (have_composite) {
         frame.window.setOpaque(alpha());
+        frame.window.setAlpha(255);
     } else {
+        frame.window.setOpaque(255);
         frame.window.setAlpha(alpha());
     }
     frame.window.clear();

src/fluxbox.cc

@@ -1569,8 +1569,7 @@ void Fluxbox::load_rc() {
     if (m_rc_menufile->empty())
         m_rc_menufile.setDefaultValue();
 
-    if (FbTk::Transparent::haveComposite())
-        FbTk::Transparent::usePseudoTransparent(*m_rc_pseudotrans);
+    FbTk::Transparent::usePseudoTransparent(*m_rc_pseudotrans);
 
     if (!m_rc_slitlistfile->empty()) {
         *m_rc_slitlistfile = StringUtil::expandFilename(*m_rc_slitlistfile);
@@ -1670,6 +1669,8 @@ void Fluxbox::reconfigure() {
 
 void Fluxbox::real_reconfigure() {
 
+    FbTk::Transparent::usePseudoTransparent(*m_rc_pseudotrans);
+
     ScreenList::iterator screen_it = m_screen_list.begin();
     ScreenList::iterator screen_it_end = m_screen_list.end();
     for (; screen_it != screen_it_end; ++screen_it)