X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/58385af01650f2218cff7d64b58140a8aafdf8e0..2b9a7d4cc2f5f55df3d83f7cf2160cf9a509a4f2:/src/msw/statbox.cpp

diff --git a/src/msw/statbox.cpp b/src/msw/statbox.cpp
index cd21abe857..deb7761c26 100644
--- a/src/msw/statbox.cpp
+++ b/src/msw/statbox.cpp
@@ -38,15 +38,11 @@
 #include "wx/statbox.h"
 #include "wx/notebook.h"
 #include "wx/sysopt.h"
+#include "wx/image.h"
+#include "wx/dcmemory.h"
 
 #include "wx/msw/private.h"
 
-// under CE this style is not defined but we don't need to make static boxes
-// transparent there neither
-#ifndef WS_EX_TRANSPARENT
-    #define WS_EX_TRANSPARENT 0
-#endif
-
 // ----------------------------------------------------------------------------
 // wxWin macros
 // ----------------------------------------------------------------------------
@@ -125,6 +121,8 @@ bool wxStaticBox::Create(wxWindow *parent,
     if ( !MSWCreateControl(wxT("BUTTON"), label, pos, size) )
         return false;
 
+    Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBox::OnPaint));
+
     return true;
 }
 
@@ -132,8 +130,12 @@ WXDWORD wxStaticBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 {
     long styleWin = wxStaticBoxBase::MSWGetStyle(style, exstyle);
 
+    // no need for it anymore, must be removed for wxRadioBox child
+    // buttons to be able to repaint themselves
+    styleWin &= ~WS_CLIPCHILDREN;
+
     if ( exstyle )
-        *exstyle = WS_EX_TRANSPARENT;
+        *exstyle = 0;
 
     return styleWin | BS_GROUPBOX;
 }
@@ -194,5 +196,149 @@ void wxStaticBox::GetBordersForSizer(int *borderTop, int *borderOther) const
 #endif // !wxDIALOG_UNIT_COMPATIBILITY
 }
 
+// MSWGetRegionWithoutSelf helper: removes the given rectangle from region
+static inline void
+SubtractRectFromRgn(HRGN hrgn, int left, int top, int right, int bottom)
+{
+    AutoHRGN hrgnRect(::CreateRectRgn(left, top, right, bottom));
+    if ( !hrgnRect )
+    {
+        wxLogLastError(_T("CreateRectRgn()"));
+        return;
+    }
+
+    ::CombineRgn(hrgn, hrgn, hrgnRect, RGN_DIFF);
+}
+
+void wxStaticBox::MSWGetRegionWithoutSelf(WXHRGN hRgn, int w, int h)
+{
+    HRGN hrgn = (HRGN)hRgn;
+
+    // remove the area occupied by the static box borders from the region
+    int borderTop, border;
+    GetBordersForSizer(&borderTop, &border);
+
+    // top
+    SubtractRectFromRgn(hrgn, 0, 0, w, borderTop);
+
+    // bottom
+    SubtractRectFromRgn(hrgn, 0, h - border, w, h);
+
+    // left
+    SubtractRectFromRgn(hrgn, 0, 0, border, h);
+
+    // right
+    SubtractRectFromRgn(hrgn, w - border, 0, w, h);
+}
+
+WXHRGN wxStaticBox::MSWGetRegionWithoutChildren()
+{
+    RECT rc;
+    ::GetWindowRect(GetHwnd(), &rc);
+    HRGN hrgn = ::CreateRectRgn(rc.left, rc.top, rc.right + 1, rc.bottom + 1);
+
+    // iterate over all child windows (not just wxWindows but all windows)
+    for ( HWND child = ::GetWindow(GetHwndOf(GetParent()), GW_CHILD);
+          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) )
+        {
+            ::GetWindowRect(child, &rc);
+            if ( ::RectInRegion(hrgn, &rc) )
+            {
+                // 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);
+            }
+        }
+    }
+
+    return (WXHRGN)hrgn;
+}
+
+// helper for OnPaint()
+void wxStaticBox::PaintBackground(wxDC& dc, const RECT& rc)
+{
+    HBRUSH hbr = (HBRUSH)DoMSWControlColor(GetHdcOf(dc), wxNullColour);
+    if ( !hbr )
+    {
+        wxBrush *
+            brush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour());
+        if ( brush )
+            hbr = GetHbrushOf(*brush);
+    }
+
+    if ( hbr )
+        ::FillRect(GetHdcOf(dc), &rc, hbr);
+}
+
+void wxStaticBox::OnPaint(wxPaintEvent& WXUNUSED(event))
+{
+    wxPaintDC dc(this);
+    RECT rc;
+    ::GetClientRect(GetHwnd(), &rc);
+
+    // draw the entire box in a memory DC, but only blit the bits not redrawn
+    // either by our children windows nor by FillRect() painting the background
+    // below
+    wxMemoryDC memdc;
+    wxBitmap bitmap(rc.right, rc.bottom);
+    memdc.SelectObject(bitmap);
+
+    PaintBackground(memdc, rc);
+    MSWDefWindowProc(WM_PAINT, (WPARAM)GetHdcOf(memdc), 0);
+
+    int borderTop, border;
+    GetBordersForSizer(&borderTop, &border);
+
+    // top
+    dc.Blit(border, 0, rc.right - border, borderTop,
+            &memdc, border, 0);
+    // bottom
+    dc.Blit(border, rc.bottom - border, rc.right - border, rc.bottom,
+            &memdc, border, rc.bottom - border);
+    // left
+    dc.Blit(0, 0, border, rc.bottom,
+            &memdc, 0, 0);
+    // right
+    dc.Blit(rc.right - border, 0, rc.right, rc.bottom,
+            &memdc, rc.right - border, 0);
+
+    AutoHRGN hrgn((HRGN)MSWGetRegionWithoutChildren());
+    RECT rcWin;
+    ::GetWindowRect(GetHwnd(), &rcWin);
+    ::OffsetRgn(hrgn, -rcWin.left, -rcWin.top);
+
+
+    // now remove the box itself
+    MSWGetRegionWithoutSelf((WXHRGN) hrgn, rc.right, rc.bottom);
+
+    // and paint the inside of the box (excluding child controls)
+    ::SelectClipRgn(GetHdcOf(dc), hrgn);
+    PaintBackground(dc, rc);
+    ::SelectClipRgn(GetHdcOf(dc), NULL);
+}
+
 #endif // wxUSE_STATBOX