Don't consider fully opaque bitmaps as having alpha in wxMSW.

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

diff --git a/src/msw/stattext.cpp b/src/msw/stattext.cpp
index 0da7ce60b3feec6ce3c08e1e2e322c6c54c1992f..0a08d82b9db69e128974c098f99561b2eeaefb6a 100644 (file)
--- a/src/msw/stattext.cpp
+++ b/src/msw/stattext.cpp
@@ -9,10 +9,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "stattext.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -22,17 +18,17 @@
 
 #if wxUSE_STATTEXT
 
 
 #if wxUSE_STATTEXT
 

+#include "wx/stattext.h"
+

 #ifndef WX_PRECOMP
 #ifndef WX_PRECOMP

-#include "wx/event.h"
-#include "wx/app.h"
-#include "wx/brush.h"
+    #include "wx/event.h"
+    #include "wx/app.h"
+    #include "wx/brush.h"
+    #include "wx/dcclient.h"
+    #include "wx/settings.h"

 #endif
 
 #endif
 

-#include "wx/stattext.h"

 #include "wx/msw/private.h"
 #include "wx/msw/private.h"

-#include <stdio.h>
-
-IMPLEMENT_DYNAMIC_CLASS(wxStaticText, wxControl)

 
 bool wxStaticText::Create(wxWindow *parent,
                           wxWindowID id,
 
 bool wxStaticText::Create(wxWindow *parent,
                           wxWindowID id,


@@ -43,12 +39,26 @@ bool wxStaticText::Create(wxWindow *parent,
                           const wxString& name)
 {
     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
                           const wxString& name)
 {
     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )

-        return FALSE;
+        return false;

 
 

-    if ( !MSWCreateControl(wxT("STATIC"), label, pos, size) )
-        return FALSE;
+    if ( !MSWCreateControl(wxT("STATIC"), wxEmptyString, pos, size) )
+        return false;

 
 

-    return TRUE;
+    // we set the label here and not through MSWCreateControl() because we
+    // need to do many operation on it for ellipsization&markup support
+    SetLabel(label);
+
+    // as we didn't pass the correct label to MSWCreateControl(), it didn't set
+    // the initial size correctly -- do it now
+    InvalidateBestSize();
+    SetInitialSize(size);
+
+    // NOTE: if the label contains ampersand characters which are interpreted as
+    //       accelerators, they will be rendered (at least on WinXP) only if the
+    //       static text is placed inside a window class which correctly handles
+    //       focusing by TAB traversal (e.g. wxPanel).
+
+    return true;

 }
 
 WXDWORD wxStaticText::MSWGetStyle(long style, WXDWORD *exstyle) const
 }
 
 WXDWORD wxStaticText::MSWGetStyle(long style, WXDWORD *exstyle) const


@@ -66,114 +76,159 @@ WXDWORD wxStaticText::MSWGetStyle(long style, WXDWORD *exstyle) const
     else
         msStyle |= SS_LEFT;
 
     else
         msStyle |= SS_LEFT;
 

+#ifdef SS_ENDELLIPSIS
+    // this style is necessary to receive mouse events
+    // Win NT and later have the SS_ENDELLIPSIS style which is useful to us:
+    if (wxGetOsVersion() == wxOS_WINDOWS_NT)
+    {
+        // for now, add the SS_ENDELLIPSIS style if wxST_ELLIPSIZE_END is given;
+        // we may need to remove it later in ::SetLabel() if the given label
+        // has newlines
+        if ( style & wxST_ELLIPSIZE_END )
+            msStyle |= SS_ENDELLIPSIS;
+    }
+#endif // SS_ENDELLIPSIS
+
+    msStyle |= SS_NOTIFY;
+

     return msStyle;
 }
 
     return msStyle;
 }
 

-wxSize wxStaticText::DoGetBestSize() const
+wxSize wxStaticText::DoGetBestClientSize() const

 {
 {

-    wxString text(wxGetWindowText(GetHWND()));
-
-    int widthTextMax = 0, widthLine,
-        heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
-
-    bool lastWasAmpersand = FALSE;
-
-    wxString curLine;
-    for ( const wxChar *pc = text; ; pc++ )
-    {
-        if ( *pc == wxT('\n') || *pc == wxT('\0') )
-        {
-            if ( !curLine )
-            {
-                // we can't use GetTextExtent - it will return 0 for both width
-                // and height and an empty line should count in height
-                // calculation
-                if ( !heightLineDefault )
-                    heightLineDefault = heightLine;
-                if ( !heightLineDefault )
-                    GetTextExtent(_T("W"), NULL, &heightLineDefault);
-
-                heightTextTotal += heightLineDefault;
-            }
-            else
-            {
-                GetTextExtent(curLine, &widthLine, &heightLine);
-                if ( widthLine > widthTextMax )
-                    widthTextMax = widthLine;
-                heightTextTotal += heightLine;
-            }
-
-            if ( *pc == wxT('\n') )
-            {
-               curLine.Empty();
-            }
-            else
-            {
-               // the end of string
-               break;
-            }
-        }
-        else
-        {
-            // we shouldn't take into account the '&' which just introduces the
-            // mnemonic characters and so are not shown on the screen -- except
-            // when it is preceded by another '&' in which case it stands for a
-            // literal ampersand
-            if ( *pc == _T('&') )
-            {
-                if ( !lastWasAmpersand )
-                {
-                    lastWasAmpersand = TRUE;
-
-                    // skip the statement adding pc to curLine below
-                    continue;
-                }
-
-                // it is a literal ampersand
-                lastWasAmpersand = FALSE;
-            }
-
-            curLine += *pc;
-        }
-    }
+    wxClientDC dc(const_cast<wxStaticText *>(this));
+    wxFont font(GetFont());
+    if (!font.Ok())
+        font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
+
+    dc.SetFont(font);
+
+    wxCoord widthTextMax, heightTextTotal;
+    dc.GetMultiLineTextExtent(GetLabelText(), &widthTextMax, &heightTextTotal);
+
+#ifdef __WXWINCE__
+    if ( widthTextMax )
+        widthTextMax += 2;
+#endif // __WXWINCE__
+
+    // It looks like the static control needs "slightly" more vertical space
+    // than the character height and while the text isn't actually truncated if
+    // we use just the minimal height, it is positioned differently than when
+    // the control has enough space and this result in the text in edit and
+    // static controls not being aligned when the controls themselves are. As
+    // this is something you really should be able to count on, increase the
+    // space allocated for the control so that the base lines do align
+    // correctly. Notice that while the above is true at least for the single
+    // line controls, there doesn't seem to do any harm to allocate two extra
+    // pixels in multi-line case neither so do it always for consistency.
+    //
+    // I still have no idea why exactly is this needed nor why should we use 2
+    // and not something else. This seems to work in all the configurations
+    // though (small/large fonts, different OS versions, ...) so just hard code
+    // it for now. If we need something better later it might be worth looking
+    // at the height of the text control returned by ::GetComboBoxInfo() as it
+    // seems to be the "minimal acceptable" height.
+    heightTextTotal += 2;

 
     return wxSize(widthTextMax, heightTextTotal);
 }
 
 void wxStaticText::DoSetSize(int x, int y, int w, int h, int sizeFlags)
 {
 
     return wxSize(widthTextMax, heightTextTotal);
 }
 
 void wxStaticText::DoSetSize(int x, int y, int w, int h, int sizeFlags)
 {

-    // we need to refresh the window after changing its size as the standard
-    // control doesn't always update itself properly
+    // note: we first need to set the size and _then_ call UpdateLabel

     wxStaticTextBase::DoSetSize(x, y, w, h, sizeFlags);
 
     wxStaticTextBase::DoSetSize(x, y, w, h, sizeFlags);
 

+#ifdef SS_ENDELLIPSIS
+    // do we need to ellipsize the contents?
+    long styleReal = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+    if ( !(styleReal & SS_ENDELLIPSIS) )
+    {
+        // we don't have SS_ENDELLIPSIS style:
+        // we need to (eventually) do ellipsization ourselves
+        UpdateLabel();
+    }
+    //else: we don't or the OS will do it for us
+#endif // SS_ENDELLIPSIS
+
+    // we need to refresh the window after changing its size as the standard
+    // control doesn't always update itself properly

     Refresh();
 }
 
 void wxStaticText::SetLabel(const wxString& label)
 {
     Refresh();
 }
 
 void wxStaticText::SetLabel(const wxString& label)
 {

-    wxStaticTextBase::SetLabel(label);
+#ifdef SS_ENDELLIPSIS
+    long styleReal = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+    if ( HasFlag(wxST_ELLIPSIZE_END) &&
+          wxGetOsVersion() == wxOS_WINDOWS_NT )
+    {
+        // adding SS_ENDELLIPSIS or SS_ENDELLIPSIS "disables" the correct
+        // newline handling in static texts: the newlines in the labels are
+        // shown as square. Thus we don't use it even on newer OS when
+        // the static label contains a newline.
+        if ( label.Contains(wxT('\n')) )
+            styleReal &= ~SS_ENDELLIPSIS;
+        else
+            styleReal |= SS_ENDELLIPSIS;
+
+        ::SetWindowLong(GetHwnd(), GWL_STYLE, styleReal);
+    }
+    else // style not supported natively
+    {
+        styleReal &= ~SS_ENDELLIPSIS;
+        ::SetWindowLong(GetHwnd(), GWL_STYLE, styleReal);
+    }
+#endif // SS_ENDELLIPSIS
+
+    // save the label in m_labelOrig with both the markup (if any) and
+    // the mnemonics characters (if any)
+    m_labelOrig = label;
+
+#ifdef SS_ENDELLIPSIS
+    if ( styleReal & SS_ENDELLIPSIS )
+        DoSetLabel(GetLabel());
+    else
+#endif // SS_ENDELLIPSIS
+        DoSetLabel(GetEllipsizedLabel());

 
     // adjust the size of the window to fit to the label unless autoresizing is
     // disabled
 
     // adjust the size of the window to fit to the label unless autoresizing is
     // disabled

-    if ( !(GetWindowStyle() & wxST_NO_AUTORESIZE) )
+    if ( !HasFlag(wxST_NO_AUTORESIZE) &&
+         !IsEllipsized() )  // if ellipsize is ON, then we don't want to get resized!

     {
     {

-        DoSetSize(-1, -1, -1, -1, wxSIZE_AUTO_WIDTH | wxSIZE_AUTO_HEIGHT);
+        InvalidateBestSize();
+        DoSetSize(wxDefaultCoord, wxDefaultCoord, wxDefaultCoord, wxDefaultCoord,
+                  wxSIZE_AUTO_WIDTH | wxSIZE_AUTO_HEIGHT);

     }
 }
 
     }
 }
 

-

 bool wxStaticText::SetFont(const wxFont& font)
 {
     bool ret = wxControl::SetFont(font);
 
     // adjust the size of the window to fit to the label unless autoresizing is
     // disabled
 bool wxStaticText::SetFont(const wxFont& font)
 {
     bool ret = wxControl::SetFont(font);
 
     // adjust the size of the window to fit to the label unless autoresizing is
     // disabled

-    if ( !(GetWindowStyle() & wxST_NO_AUTORESIZE) )
+    if ( !HasFlag(wxST_NO_AUTORESIZE) )

     {
     {

-        DoSetSize(-1, -1, -1, -1, wxSIZE_AUTO_WIDTH | wxSIZE_AUTO_HEIGHT);
+        InvalidateBestSize();
+        DoSetSize(wxDefaultCoord, wxDefaultCoord, wxDefaultCoord, wxDefaultCoord,
+                  wxSIZE_AUTO_WIDTH | wxSIZE_AUTO_HEIGHT);

     }
 
     return ret;
 }
 
     }
 
     return ret;
 }
 

+// for wxST_ELLIPSIZE_* support:
+
+wxString wxStaticText::DoGetLabel() const
+{
+    return wxGetWindowText(GetHwnd());
+}
+
+void wxStaticText::DoSetLabel(const wxString& str)
+{
+    SetWindowText(GetHwnd(), str.c_str());
+}
+
+

 #endif // wxUSE_STATTEXT
 #endif // wxUSE_STATTEXT