X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/75004dfbe5feb58ee30ae9f136daa08cf3869f6b..ba75967c9c0656ec0bcc342878cd9cdd27857ea9:/src/msw/choice.cpp

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index 6fc0e4cb3e..8abdba2c70 100644
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -30,6 +30,7 @@
 
 #ifndef WX_PRECOMP
     #include "wx/utils.h"
+    #include "wx/app.h"
     #include "wx/log.h"
     #include "wx/brush.h"
     #include "wx/settings.h"
@@ -117,8 +118,8 @@ bool wxChoice::Create(wxWindow *parent,
     wxASSERT_MSG( !(style & wxCB_DROPDOWN) &&
                   !(style & wxCB_READONLY) &&
                   !(style & wxCB_SIMPLE),
-                  _T("this style flag is ignored by wxChoice, you ")
-                  _T("probably want to use a wxComboBox") );
+                  wxT("this style flag is ignored by wxChoice, you ")
+                  wxT("probably want to use a wxComboBox") );
 
     return CreateAndInit(parent, id, pos, size, n, choices, style,
                          validator, name);
@@ -142,10 +143,6 @@ bool wxChoice::CreateAndInit(wxWindow *parent,
         return false;
 
 
-    // choice/combobox normally has "white" (depends on colour scheme, of
-    // course) background rather than inheriting the parent's background
-    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
-
     // initialize the controls contents
     for ( int i = 0; i < n; i++ )
     {
@@ -224,6 +221,39 @@ WXDWORD wxChoice::MSWGetStyle(long style, WXDWORD *exstyle) const
     return msStyle;
 }
 
+#ifndef EP_EDITTEXT
+    #define EP_EDITTEXT         1
+    #define ETS_NORMAL          1
+#endif
+
+wxVisualAttributes
+wxChoice::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
+{
+    // it is important to return valid values for all attributes from here,
+    // GetXXX() below rely on this
+    wxVisualAttributes attrs;
+
+    // FIXME: Use better dummy window?
+    wxWindow* wnd = wxTheApp->GetTopWindow();
+    if (!wnd)
+        return attrs;
+
+    attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
+
+    // there doesn't seem to be any way to get the text colour using themes
+    // API: TMT_TEXTCOLOR doesn't work neither for EDIT nor COMBOBOX
+    attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
+
+    // NB: use EDIT, not COMBOBOX (the latter works in XP but not Vista)
+    attrs.colBg = wnd->MSWGetThemeColour(L"EDIT",
+                                         EP_EDITTEXT, 
+                                         ETS_NORMAL,
+                                         ThemeColourBackground,
+                                         wxSYS_COLOUR_WINDOW);
+
+    return attrs;
+}
+
 wxChoice::~wxChoice()
 {
     Clear();
@@ -451,10 +481,24 @@ void* wxChoice::DoGetItemClientData(unsigned int n) const
 // wxMSW-specific geometry management
 // ----------------------------------------------------------------------------
 
+namespace
+{
+
+// there is a difference between the height passed to CB_SETITEMHEIGHT and the
+// real height of the combobox; it is probably not constant for all Windows
+// versions/settings but right now I don't know how to find what it is so it is
+// temporarily hardcoded to its value under XP systems with normal fonts sizes
+const int COMBO_HEIGHT_ADJ = 6;
+
+} // anonymous namespace
+
 void wxChoice::MSWUpdateVisibleHeight()
 {
     if ( m_heightOwn != wxDefaultCoord )
-        ::SendMessage(GetHwnd(), CB_SETITEMHEIGHT, (WPARAM)-1, m_heightOwn);
+    {
+        ::SendMessage(GetHwnd(), CB_SETITEMHEIGHT,
+                      (WPARAM)-1, m_heightOwn - COMBO_HEIGHT_ADJ);
+    }
 }
 
 #if wxUSE_DEFERRED_SIZING
@@ -495,63 +539,77 @@ void wxChoice::DoMoveWindow(int x, int y, int width, int height)
 
 void wxChoice::DoGetSize(int *w, int *h) const
 {
+    wxControl::DoGetSize(w, h);
+
     // this is weird: sometimes, the height returned by Windows is clearly the
     // total height of the control including the drop down list -- but only
-    // sometimes, and normally it isn't... I have no idea about what to do with
-    // this
-    wxControl::DoGetSize(w, h);
+    // sometimes, and sometimes it isn't so work around this here by using our
+    // own stored value if we have it
+    if ( h && m_heightOwn != wxDefaultCoord )
+        *h = m_heightOwn;
 }
 
 void wxChoice::DoSetSize(int x, int y,
                          int width, int height,
                          int sizeFlags)
 {
-    const int heightOrig = height;
+    const int heightBest = GetBestSize().y;
 
-    // the height which we must pass to Windows should be the total height of
-    // the control including the drop down list while the height given to us
-    // is, of course, just the height of the permanently visible part of it
-    if ( height != wxDefaultCoord )
+    // we need the real height below so get the current one if it's not given
+    if ( height == wxDefaultCoord )
+    {
+        // height not specified, use the same as before
+        DoGetSize(NULL, &height);
+    }
+    else if ( height == heightBest )
+    {
+        // we don't need to manually manage our height, let the system use the
+        // default one
+        m_heightOwn = wxDefaultCoord;
+    }
+    else // non-default height specified
     {
         // set our new own height but be careful not to make it too big: the
         // native control apparently stores it as a single byte and so setting
         // own height to 256 pixels results in default height being used (255
         // is still ok)
-        if ( height > UCHAR_MAX )
-            height = UCHAR_MAX;
         m_heightOwn = height;
 
-        // don't make the drop down list too tall, arbitrarily limit it to 30
-        // items max and also don't make it too small if it's currently empty
-        size_t nItems = GetCount();
+        if ( m_heightOwn > UCHAR_MAX )
+            m_heightOwn = UCHAR_MAX;
+        // nor too small: see MSWUpdateVisibleHeight()
+        else if ( m_heightOwn < COMBO_HEIGHT_ADJ )
+            m_heightOwn = COMBO_HEIGHT_ADJ;
+    }
+
+
+    // the height which we must pass to Windows should be the total height of
+    // the control including the drop down list while the height given to us
+    // is, of course, just the height of the permanently visible part of it so
+    // add the drop down height to it
+
+    // don't make the drop down list too tall, arbitrarily limit it to 30
+    // items max and also don't make it too small if it's currently empty
+    size_t nItems = GetCount();
+    if (!HasFlag(wxCB_SIMPLE))
+    {
         if ( !nItems )
             nItems = 9;
         else if ( nItems > 30 )
             nItems = 30;
-
-        // add space for the drop down list
-        const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
-        height += hItem*(nItems + 1);
     }
+
+    const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
+    int heightWithItems = 0;
+    if (!HasFlag(wxCB_SIMPLE))
+        heightWithItems = height + hItem*nItems;
     else
-    {
-        // We cannot pass wxDefaultCoord as height to wxControl. wxControl uses
-        // wxGetWindowRect() to determine the current height of the combobox,
-        // and then again sets the combobox's height to that value. Unfortunately,
-        // wxGetWindowRect doesn't include the dropdown list's height (at least
-        // on Win2K), so this would result in a combobox with dropdown height of
-        // 1 pixel. We have to determine the default height ourselves and call
-        // wxControl with that value instead.
-        int w, h;
-        RECT r;
-        DoGetSize(&w, &h);
-        if (::SendMessage(GetHwnd(), CB_GETDROPPEDCONTROLRECT, 0, (LPARAM) &r) != 0)
-        {
-            height = h + r.bottom - r.top;
-        }
-    }
+        heightWithItems = SetHeightSimpleComboBox(nItems);
+
+
+    // do resize the native control
+    wxControl::DoSetSize(x, y, width, heightWithItems, sizeFlags);
 
-    wxControl::DoSetSize(x, y, width, height, sizeFlags);
 
     // make the control itself of the requested height: notice that this
     // must be done after changing its size or it has no effect (apparently
@@ -568,7 +626,7 @@ void wxChoice::DoSetSize(int x, int y,
     {
         // we need to report the size of the visible part of the control back
         // in GetSize() and not height stored by DoSetSize() in m_pendingSize
-        m_pendingSize = wxSize(width, heightOrig);
+        m_pendingSize = wxSize(width, height);
     }
 #else // !wxUSE_DEFERRED_SIZING
     // always update the visible height immediately
@@ -580,6 +638,7 @@ wxSize wxChoice::DoGetBestSize() const
 {
     // find the widest string
     int wChoice = 0;
+    int hChoice;
     const unsigned int nItems = GetCount();
     for ( unsigned int i = 0; i < nItems; i++ )
     {
@@ -596,12 +655,26 @@ wxSize wxChoice::DoGetBestSize() const
 
     // the combobox should be slightly larger than the widest string
     wChoice += 5*GetCharWidth();
+    if( HasFlag( wxCB_SIMPLE ) )
+    {
+        hChoice = SetHeightSimpleComboBox( nItems );
+    }
+    else
+        hChoice = EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight());
 
-    wxSize best(wChoice, EDIT_HEIGHT_FROM_CHAR_HEIGHT(GetCharHeight()));
+    wxSize best(wChoice, hChoice);
     CacheBestSize(best);
     return best;
 }
 
+int wxChoice::SetHeightSimpleComboBox(int nItems) const
+{
+    int cx, cy;
+    wxGetCharSize( GetHWND(), &cx, &cy, GetFont() );
+    int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, (WPARAM)-1, 0);
+    return EDIT_HEIGHT_FROM_CHAR_HEIGHT( cy ) * wxMin( wxMax( nItems, 3 ), 6 ) + hItem - 1;
+}
+
 // ----------------------------------------------------------------------------
 // MSW message handlers
 // ----------------------------------------------------------------------------