gui: experimental Z order for root widgets

[enigma2.git] / lib / gui / ewidgetdesktop.cpp

diff --git a/lib/gui/ewidgetdesktop.cpp b/lib/gui/ewidgetdesktop.cpp
index c89cd270a0296226fba55039df2611597f0bf213..223b5c8672b02c906399a94225fb157084ec1fb6 100644 (file)
--- a/lib/gui/ewidgetdesktop.cpp
+++ b/lib/gui/ewidgetdesktop.cpp
@@ -5,18 +5,27 @@
 
 extern void dumpRegion(const gRegion &region);
 
-void eWidgetDesktop::addRootWidget(eWidget *root, int top)
+void eWidgetDesktop::addRootWidget(eWidget *root)
 {
        assert(!root->m_desktop);
        
+       int invert_sense = 0;
                /* buffered mode paints back-to-front, while immediate mode is front-to-back. */
        if (m_comp_mode == cmBuffered)
-               top = !top;
+               invert_sense = 1;
+       
+       ePtrList<eWidget>::iterator insert_position = m_root.begin();
+       
+       for (;;)
+       {
+               if ((insert_position == m_root.end()) || (invert_sense ^ (insert_position->m_z_position > root->m_z_position)))
+               {
+                       m_root.insert(insert_position, root);
+                       break;
+               }
+               ++insert_position;
+       }
        
-       if (top)
-               m_root.push_back(root);
-       else
-               m_root.push_front(root);
        root->m_desktop = this;
 
                /* the creation will be postponed. */
@@ -325,6 +334,12 @@ eWidgetDesktop::eWidgetDesktop(eSize size): m_mainloop(0), m_timer(0)
 
 eWidgetDesktop::~eWidgetDesktop()
 {
+               /* tell registered root windows that they no longer have a desktop. */
+       for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); )
+       {
+               i->m_desktop = 0;
+               i = m_root.erase(i);
+       }
                /* destroy all buffers */
        setCompositionMode(-1);
 }