X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2e733ec74cdef0818ec171376f99049362b643b2..404b319a85dadd7decf7a5a5331020520031a41c:/src/msw/headerctrl.cpp

diff --git a/src/msw/headerctrl.cpp b/src/msw/headerctrl.cpp
index 2fb4dea8c1..6a5a417acc 100644
--- a/src/msw/headerctrl.cpp
+++ b/src/msw/headerctrl.cpp
@@ -23,7 +23,10 @@
     #pragma hdrstop
 #endif
 
+#if wxUSE_HEADERCTRL
+
 #ifndef WX_PRECOMP
+    #include "wx/app.h"
     #include "wx/log.h"
 #endif // WX_PRECOMP
 
@@ -36,6 +39,15 @@
 #include "wx/msw/wrapcctl.h"
 #include "wx/msw/private.h"
 
+#ifndef HDM_SETBITMAPMARGIN
+    #define HDM_SETBITMAPMARGIN 0x1234
+#endif
+
+#ifndef Header_SetBitmapMargin
+    #define Header_SetBitmapMargin(hwnd, margin) \
+            ::SendMessage((hwnd), HDM_SETBITMAPMARGIN, (WPARAM)(margin), 0)
+#endif
+
 // from src/msw/listctrl.cpp
 extern int WXDLLIMPEXP_CORE wxMSWGetColumnClicked(NMHDR *nmhdr, POINT *ptClick);
 
@@ -52,6 +64,7 @@ void wxHeaderCtrl::Init()
     m_numColumns = 0;
     m_imageList = NULL;
     m_scrollOffset = 0;
+    m_colBeingDragged = -1;
 }
 
 bool wxHeaderCtrl::Create(wxWindow *parent,
@@ -68,9 +81,19 @@ bool wxHeaderCtrl::Create(wxWindow *parent,
     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
         return false;
 
-    if ( !MSWCreateControl(WC_HEADER, _T(""), pos, size) )
+    if ( !MSWCreateControl(WC_HEADER, wxT(""), pos, size) )
         return false;
 
+    // special hack for margins when using comctl32.dll v6 or later: the
+    // default margin is too big and results in label truncation when the
+    // column width is just about right to show it together with the sort
+    // indicator, so reduce it to a smaller value (in principle we could even
+    // use 0 here but this starts to look ugly)
+    if ( wxApp::GetComCtl32Version() >= 600 )
+    {
+        Header_SetBitmapMargin(GetHwnd(), ::GetSystemMetrics(SM_CXEDGE));
+    }
+
     return true;
 }
 
@@ -78,13 +101,15 @@ WXDWORD wxHeaderCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 {
     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 
-    if ( style & wxHD_DRAGDROP )
+    if ( style & wxHD_ALLOW_REORDER )
         msStyle |= HDS_DRAGDROP;
 
     // the control looks nicer with these styles and there doesn't seem to be
     // any reason to not use them so we always do (as for HDS_HORZ it is 0
     // anyhow but include it for clarity)
-    msStyle |= HDS_HORZ | HDS_BUTTONS | HDS_FLAT | HDS_FULLDRAG | HDS_HOTTRACK;
+    // NOTE: don't use however HDS_FLAT because it makes the control look
+    //       non-native when running WinXP in classic mode
+    msStyle |= HDS_HORZ | HDS_BUTTONS | HDS_FULLDRAG | HDS_HOTTRACK;
 
     return msStyle;
 }
@@ -132,7 +157,7 @@ wxSize wxHeaderCtrl::DoGetBestSize() const
     HDLAYOUT layout = { &rc, &wpos };
     if ( !Header_Layout(GetHwnd(), &layout) )
     {
-        wxLogLastError(_T("Header_Layout"));
+        wxLogLastError(wxT("Header_Layout"));
         return wxControl::DoGetBestSize();
     }
 
@@ -172,7 +197,7 @@ void wxHeaderCtrl::DoSetCount(unsigned int count)
     {
         if ( !Header_DeleteItem(GetHwnd(), 0) )
         {
-            wxLogLastError(_T("Header_DeleteItem"));
+            wxLogLastError(wxT("Header_DeleteItem"));
         }
     }
 
@@ -244,7 +269,7 @@ void wxHeaderCtrl::DoInsertItem(const wxHeaderColumn& col, unsigned int idx)
     // notice that we need to store the string we use the pointer to until we
     // pass it to the control
     hdi.mask |= HDI_TEXT;
-    wxWxCharBuffer buf = col.GetTitle().wx_str();
+    wxWxCharBuffer buf = col.GetTitle().t_str();
     hdi.pszText = buf.data();
     hdi.cchTextMax = wxStrlen(buf);
 
@@ -261,6 +286,7 @@ void wxHeaderCtrl::DoInsertItem(const wxHeaderColumn& col, unsigned int idx)
             if ( !m_imageList )
             {
                 m_imageList = new wxImageList(bmpWidth, bmpHeight);
+                (void) // suppress mingw32 warning about unused computed value
                 Header_SetImageList(GetHwnd(), GetHimagelistOf(m_imageList));
             }
             else // already have an image list
@@ -285,7 +311,7 @@ void wxHeaderCtrl::DoInsertItem(const wxHeaderColumn& col, unsigned int idx)
 
     if ( col.GetAlignment() != wxALIGN_NOT )
     {
-        hdi.mask |= HDI_FORMAT;
+        hdi.mask |= HDI_FORMAT | HDF_LEFT;
         switch ( col.GetAlignment() )
         {
             case wxALIGN_LEFT:
@@ -324,7 +350,7 @@ void wxHeaderCtrl::DoInsertItem(const wxHeaderColumn& col, unsigned int idx)
     if ( ::SendMessage(GetHwnd(), HDM_INSERTITEM,
                        MSWToNativeIdx(idx), (LPARAM)&hdi) == -1 )
     {
-        wxLogLastError(_T("Header_InsertItem()"));
+        wxLogLastError(wxT("Header_InsertItem()"));
     }
 }
 
@@ -342,7 +368,7 @@ void wxHeaderCtrl::DoSetColumnsOrder(const wxArrayInt& order)
 
     if ( !Header_SetOrderArray(GetHwnd(), orderShown.size(), &orderShown[0]) )
     {
-        wxLogLastError(_T("Header_GetOrderArray"));
+        wxLogLastError(wxT("Header_GetOrderArray"));
     }
 
     m_colIndices = order;
@@ -500,6 +526,9 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         case HDN_ITEMCLICK:
         case HDN_ITEMDBLCLICK:
             evtType = GetClickEventType(code == HDN_ITEMDBLCLICK, nmhdr->iButton);
+
+            // We're not dragging any more.
+            m_colBeingDragged = -1;
             break;
 
             // although we should get the notifications about the right clicks
@@ -513,7 +542,12 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                 if ( idx != wxNOT_FOUND )
                 {
                     idx = MSWFromNativeIdx(idx);
-                    evtType = GetClickEventType(code == NM_RDBLCLK, 1);
+
+                    // due to a bug in mingw32 headers NM_RDBLCLK is signed
+                    // there so we need a cast to avoid warnings about signed/
+                    // unsigned comparison
+                    evtType = GetClickEventType(
+                                code == static_cast<UINT>(NM_RDBLCLK), 1);
                 }
                 //else: ignore clicks outside any column
             }
@@ -531,7 +565,7 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         // ASCII and Unicode versions of this message
         case HDN_BEGINTRACKA:
         case HDN_BEGINTRACKW:
-            // non-resizeable columns can't be resized no matter what, don't
+            // non-resizable columns can't be resized no matter what, don't
             // even generate any events for them
             if ( !GetColumn(idx).IsResizeable() )
             {
@@ -557,6 +591,11 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             }
             break;
 
+            // The control is not supposed to send HDN_TRACK when using
+            // HDS_FULLDRAG (which we do use) but apparently some versions of
+            // comctl32.dll still do it, see #13506, so catch both messages
+            // just in case we are dealing with one of these buggy versions.
+        case HDN_TRACK:
         case HDN_ITEMCHANGING:
             if ( nmhdr->pitem && (nmhdr->pitem->mask & HDI_WIDTH) )
             {
@@ -587,8 +626,18 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             if ( nmhdr->iItem == -1 )
                 break;
 
+            // If we are dragging a column that is not draggable and the mouse
+            // is moved over a different column then we get the column number from
+            // the column under the mouse. This results in an unexpected behaviour
+            // if this column is draggable. To prevent this remember the column we
+            // are dragging for the complete drag and drop cycle.
+            if ( m_colBeingDragged == -1 )
+            {
+                m_colBeingDragged = idx;
+            }
+
             // column must have the appropriate flag to be draggable
-            if ( !GetColumn(idx).IsReorderable() )
+            if ( !GetColumn(m_colBeingDragged).IsReorderable() )
             {
                 veto = true;
                 break;
@@ -609,10 +658,16 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
             order = MSWFromNativeOrder(order);
 
             evtType = wxEVT_COMMAND_HEADER_END_REORDER;
+
+            // We (successfully) ended dragging the column.
+            m_colBeingDragged = -1;
             break;
 
         case NM_RELEASEDCAPTURE:
             evtType = wxEVT_COMMAND_HEADER_DRAGGING_CANCELLED;
+
+            // Dragging the column was cancelled.
+            m_colBeingDragged = -1;
             break;
     }
 
@@ -627,22 +682,24 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
         if ( order != -1 )
             event.SetNewOrder(order);
 
-        if ( GetEventHandler()->ProcessEvent(event) )
-        {
-            if ( event.IsAllowed() )
-                return true;    // skip default message handling below
+        const bool processed = GetEventHandler()->ProcessEvent(event);
 
-            // we need to veto the default handling of this message, don't
-            // return to execute the code in the "if veto" branch below
+        if ( processed && !event.IsAllowed() )
             veto = true;
-        }
-        else // not processed
+
+        if ( !veto )
         {
             // special post-processing for HDN_ENDDRAG: we need to update the
             // internal column indices array if this is allowed to go ahead as
             // the native control is going to reorder its columns now
             if ( evtType == wxEVT_COMMAND_HEADER_END_REORDER )
                 MoveColumnInOrderArray(m_colIndices, idx, order);
+
+            if ( processed )
+            {
+                // skip default processing below
+                return true;
+            }
         }
     }
 
@@ -660,3 +717,5 @@ bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 }
 
 #endif // wxHAS_GENERIC_HEADERCTRL
+
+#endif // wxUSE_HEADERCTRL