Take src x, y into account when blitting with alpha

[wxWidgets.git] / src / msw / statbox.cpp

diff --git a/src/msw/statbox.cpp b/src/msw/statbox.cpp
index 1aa091a7b1e34cd6650803413d5991fe4246f5a5..88e485e64b57e19ecc41ab01e546dedf816c041c 100644 (file)
--- a/src/msw/statbox.cpp
+++ b/src/msw/statbox.cpp
@@ -40,6 +40,7 @@
 #include "wx/sysopt.h"
 #include "wx/image.h"
 #include "wx/dcmemory.h"
+#include "wx/sysopt.h"
 
 #include "wx/msw/private.h"
 #include "wx/msw/missing.h"
@@ -123,7 +124,8 @@ bool wxStaticBox::Create(wxWindow *parent,
         return false;
 
 #ifndef __WXWINCE__
-    Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBox::OnPaint));
+    if (!wxSystemOptions::IsFalse(wxT("msw.staticbox.optimized-paint")))
+        Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBox::OnPaint));
 #endif // !__WXWINCE__
 
     return true;
@@ -143,7 +145,12 @@ WXDWORD wxStaticBox::MSWGetStyle(long style, WXDWORD *exstyle) const
     styleWin &= ~WS_CLIPCHILDREN;
 
     if ( exstyle )
-        *exstyle = 0;
+    {
+        if (wxSystemOptions::IsFalse(wxT("msw.staticbox.optimized-paint")))
+            *exstyle = WS_EX_TRANSPARENT;
+        else
+            *exstyle = 0;
+    }
 
     return styleWin | BS_GROUPBOX;
 }
@@ -258,35 +265,44 @@ WXHRGN wxStaticBox::MSWGetRegionWithoutChildren()
           child;
           child = ::GetWindow(child, GW_HWNDNEXT) )
     {
-        wxWindow *childWindow = wxGetWindowFromHWND((WXHWND) child);
-
-        // can't just test for (this != child) here since if a wxStaticBox
-        // overlaps another wxStaticBox then neither are drawn. The overlapping
-        // region will flicker but we shouldn't have overlapping windows anyway.
-        if ( !childWindow || !wxDynamicCast(childWindow, wxStaticBox) )
+        if ( ! ::IsWindowVisible(child) )
+        {
+            // if the window isn't visible then it doesn't need clipped
+            continue;
+        }
+        
+        LONG style = ::GetWindowLong(child, GWL_STYLE);
+        wxString str(wxGetWindowClass(child));
+        str.UpperCase();
+        if ( str == wxT("BUTTON") && (style & BS_GROUPBOX) == BS_GROUPBOX )
         {
-            ::GetWindowRect(child, &rc);
-            if ( ::RectInRegion(hrgn, &rc) )
+            // Don't clip any static boxes, not just this one.  This will
+            // result in flicker in overlapping static boxes, but at least
+            // they will all be drawn correctly and we shouldn't have
+            // overlapping windows anyway.
+            continue;
+        }
+        
+        ::GetWindowRect(child, &rc);
+        if ( ::RectInRegion(hrgn, &rc) )
+        {
+            // need to remove WS_CLIPSIBLINGS from all sibling windows
+            // that are within this staticbox if set
+            if ( style & WS_CLIPSIBLINGS )
             {
-                // need to remove WS_CLIPSIBLINGS from all sibling windows
-                // that are within this staticbox if set
-                LONG style = ::GetWindowLong(child, GWL_STYLE);
-                if ( style & WS_CLIPSIBLINGS )
-                {
-                    style &= ~WS_CLIPSIBLINGS;
-                    ::SetWindowLong(child, GWL_STYLE, style);
-
-                    // MSDN: "If you have changed certain window data using
-                    // SetWindowLong, you must call SetWindowPos to have the
-                    // changes take effect."
-                    ::SetWindowPos(child, NULL, 0, 0, 0, 0,
-                                   SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
-                                   SWP_FRAMECHANGED);
-                }
-
-                AutoHRGN hrgnChild(::CreateRectRgnIndirect(&rc));
-                ::CombineRgn(hrgn, hrgn, hrgnChild, RGN_DIFF);
+                style &= ~WS_CLIPSIBLINGS;
+                ::SetWindowLong(child, GWL_STYLE, style);
+                
+                // MSDN: "If you have changed certain window data using
+                // SetWindowLong, you must call SetWindowPos to have the
+                // changes take effect."
+                ::SetWindowPos(child, NULL, 0, 0, 0, 0,
+                               SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
+                               SWP_FRAMECHANGED);
             }
+
+            AutoHRGN hrgnChild(::CreateRectRgnIndirect(&rc));
+            ::CombineRgn(hrgn, hrgn, hrgnChild, RGN_DIFF);
         }
     }
 
@@ -321,6 +337,15 @@ void wxStaticBox::PaintBackground(wxDC& dc, const RECT& rc)
     ::FillRect(GetHdcOf(dc), &rc, hbr);
 }
 
+void wxStaticBox::PaintForeground(wxDC& dc, const RECT& WXUNUSED(rc))
+{
+    // NB: neither setting the text colour nor transparent background mode
+    //     doesn't change anything: the static box def window proc still
+    //     draws the label in its own colours, so if we want to have control
+    //     over this we really have to draw everything ourselves
+    MSWDefWindowProc(WM_PAINT, (WPARAM)GetHdcOf(dc), 0);
+}
+
 void wxStaticBox::OnPaint(wxPaintEvent& WXUNUSED(event))
 {
     RECT rc;
@@ -332,13 +357,7 @@ void wxStaticBox::OnPaint(wxPaintEvent& WXUNUSED(event))
     memdc.SelectObject(bitmap);
 
     PaintBackground(memdc, rc);
-
-    // NB: neither setting the text colour nor transparent background mode
-    //     doesn't change anything: the static box def window proc still
-    //     draws the label in its own colours, so if we want to have control
-    //     over this we really have to draw everything ourselves
-    MSWDefWindowProc(WM_PAINT, (WPARAM)GetHdcOf(memdc), 0);
-
+    PaintForeground(memdc, rc);
 
     // now only blit the static box border itself, not the interior, to avoid
     // flicker when background is drawn below