save the current status text for each pane inside wxStatusBarPane: native controls now store the (eventually) ellipsized version of the string; remove code for managing the status strings currently inside the [native|generic] control; add ellipsization support under wxMSW; now that all SetFieldsCount() implementation rrely on wxStatusBarBase::SetFieldsCount document how it behaves when adding new panes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58786 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/statusbr.h

@@ -50,7 +50,6 @@ public:
 
     // Set status line text
     virtual void SetStatusText(const wxString& text, int number = 0);
-    virtual wxString GetStatusText(int number = 0) const;
 
     // Set status line widths
     virtual void SetStatusWidths(int n, const int widths_field[]);
@@ -97,9 +96,6 @@ protected:
     // common part of all ctors
     void Init();
 
-    // the array of the currently displayed strings
-    wxArrayString     m_statusStrings;
-
     // the last known height of the client rect
     int               m_lastClientHeight;
 

include/wx/msw/statusbar.h

@@ -14,6 +14,8 @@
 
 #if wxUSE_NATIVE_STATUSBAR
 
+class WXDLLIMPEXP_CORE wxClientDC;
+
 class WXDLLIMPEXP_CORE wxStatusBar : public wxStatusBarBase
 {
 public:
@@ -39,7 +41,6 @@ public:
 
     // each field of status line has it's own text
     virtual void     SetStatusText(const wxString& text, int number = 0);
-    virtual wxString GetStatusText(int number = 0) const;
 
     // set status line fields' widths
     virtual void SetStatusWidths(int n, const int widths_field[]);
@@ -57,17 +58,23 @@ public:
     virtual int GetBorderX() const;
     virtual int GetBorderY() const;
 
+    virtual bool SetFont(const wxFont& font);
+
     virtual WXLRESULT MSWWindowProc(WXUINT nMsg,
                                     WXWPARAM wParam,
                                     WXLPARAM lParam);
 protected:
     void CopyFieldsWidth(const int widths[]);
     void SetFieldsWidth();
+    void UpdateFieldText(int nField);
 
     // override some base class virtuals
     virtual wxSize DoGetBestSize() const;
     virtual void DoMoveWindow(int x, int y, int width, int height);
 
+    // used by UpdateFieldText
+    wxClientDC *m_pDC;
+
 private:
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxStatusBar)
 };

include/wx/osx/statusbr.h

@@ -28,8 +28,9 @@ class WXDLLIMPEXP_CORE wxStatusBarMac : public wxStatusBarGeneric
               long style = wxST_SIZEGRIP,
               const wxString& name = wxStatusBarNameStr);
 
-    virtual void DrawFieldText(wxDC& dc, int i);
-    virtual void DrawField(wxDC& dc, int i);
+    virtual void DrawFieldText(wxDC& dc, const wxRect& rc, int i, int textHeight);
+    virtual void DrawField(wxDC& dc, int i, int textHeight);
+
     virtual void SetStatusText(const wxString& text, int number = 0);
 
     // Implementation

include/wx/statusbr.h

@@ -39,14 +39,16 @@ class wxStatusBarPane
 {
 public:
     wxStatusBarPane(int style = wxSB_NORMAL, size_t width = 0)
-        : nStyle(style), nWidth(width) {}
+        : nStyle(style), nWidth(width) { arrStack.Add(wxEmptyString); }
 
     int nStyle;
     int nWidth;     // the width maybe negative, indicating a variable-width field
 
     // this is the array of the stacked strings of this pane; note that this
-    // stack does not include the string currently displayed in this pane
-    // as it's stored in the native status bar control
+    // stack does include also the string currently displayed in this pane
+    // as the version stored in the native status bar control is possibly
+    // ellipsized; note that arrStack.Last() is the top of the stack
+    // (i.e. the string shown in the status bar)
     wxArrayString arrStack;
 };
 
@@ -74,8 +76,10 @@ public:
     // field text
     // ----------
 
-    virtual void SetStatusText(const wxString& text, int number = 0) = 0;
-    virtual wxString GetStatusText(int number = 0) const = 0;
+    virtual void SetStatusText(const wxString& text, int number = 0)
+        { m_panes[number].arrStack.Last() = text; }
+    virtual wxString GetStatusText(int number = 0) const
+        { return m_panes[number].arrStack.Last(); }
 
     void PushStatusText(const wxString& text, int number = 0);
     void PopStatusText(int number = 0);

include/wx/univ/statusbr.h

@@ -46,7 +46,6 @@ public:
 
     // get/set the text of the given field
     virtual void SetStatusText(const wxString& text, int number = 0);
-    virtual wxString GetStatusText(int number = 0) const;
 
     // Get the position and size of the field's internal bounding rectangle
     virtual bool GetFieldRect(int i, wxRect& rect) const;
@@ -96,7 +95,7 @@ protected:
 
 private:
     // the current status fields strings
-    wxArrayString m_statusText;
+    //wxArrayString m_statusText;
 
     // the absolute status fields widths
     wxArrayInt m_widthsAbs;

interface/wx/statusbr.h

@@ -121,7 +121,8 @@ public:
         Sets the number of fields, and optionally the field widths.
 
         @param number
-            The number of fields.
+            The number of fields. If this is greater than the previous number,
+            then new fields with empty strings will be added to the status bar.
         @param widths
             An array of n integers interpreted in the same way as
             in SetStatusWidths().

src/common/statbar.cpp

@@ -194,12 +194,15 @@ void wxStatusBarBase::PushStatusText(const wxString& text, int number)
     // save current status text in the stack
     m_panes[number].arrStack.push_back(GetStatusText(number));
 
-    // update current status text
     SetStatusText(text, number);
+        // update current status text (eventually also in the native control)
 }
 
 void wxStatusBarBase::PopStatusText(int number)
 {
+    wxASSERT_MSG(m_panes[number].arrStack.GetCount() == 1,
+                 "can't pop any further string");
+
     wxString text = m_panes[number].arrStack.back();
     m_panes[number].arrStack.pop_back();  // also remove it from the stack
 

src/generic/statusbr.cpp

@@ -119,21 +119,9 @@ void wxStatusBarGeneric::SetFieldsCount(int number, const int *widths)
 {
     wxASSERT_MSG( number >= 0, _T("negative number of fields in wxStatusBar?") );
 
-    // enlarge the m_statusStrings array if needed:
-    for (size_t i = m_panes.GetCount(); i < (size_t)number; ++i)
-        m_statusStrings.Add( wxEmptyString );
-
-    // shrink the m_statusStrings array if needed:
-    for (int j = (int)m_panes.GetCount() - 1; j >= number; --j)
-        m_statusStrings.RemoveAt(j);
-
-    // forget the old cached pixel widths
-    m_widthsAbs.Empty();
-
+    // this will result in a call to SetStatusWidths() and thus an update to our
+    // m_widthsAbs cache
     wxStatusBarBase::SetFieldsCount(number, widths);
-
-    wxASSERT_MSG( m_panes.GetCount() == m_statusStrings.GetCount(),
-                  _T("This really should never happen, can we do away with m_panes.GetCount() here?") );
 }
 
 void wxStatusBarGeneric::SetStatusText(const wxString& text, int number)
@@ -141,10 +129,10 @@ void wxStatusBarGeneric::SetStatusText(const wxString& text, int number)
     wxCHECK_RET( (number >= 0) && ((size_t)number < m_panes.GetCount()),
                  _T("invalid status bar field index") );
 
-    wxString oldText = m_statusStrings[number];
+    wxString oldText = GetStatusText(number);
     if (oldText != text)
     {
-        m_statusStrings[number] = text;
+        wxStatusBarBase::SetStatusText(text, number);
 
         wxRect rect;
         GetFieldRect(number, rect);
@@ -158,23 +146,17 @@ void wxStatusBarGeneric::SetStatusText(const wxString& text, int number)
     }
 }
 
-wxString wxStatusBarGeneric::GetStatusText(int n) const
-{
-    wxCHECK_MSG( (n >= 0) && ((size_t)n < m_panes.GetCount()), wxEmptyString,
-                 _T("invalid status bar field index") );
-
-    return m_statusStrings[n];
-}
-
 void wxStatusBarGeneric::SetStatusWidths(int n, const int widths_field[])
 {
     // only set status widths when n == number of statuswindows
     wxCHECK_RET( (size_t)n == m_panes.GetCount(), _T("status bar field count mismatch") );
 
-    // forget the old cached pixel widths
-    m_widthsAbs.Empty();
-
     wxStatusBarBase::SetStatusWidths(n, widths_field);
+
+    // update cache
+    int width;
+    GetClientSize(&width, &m_lastClientHeight);
+    m_widthsAbs = CalculateAbsWidths(width);
 }
 
 bool wxStatusBarGeneric::ShowsSizeGrip() const

src/msw/statusbar.cpp

@@ -36,6 +36,9 @@
     #include "wx/msw/uxtheme.h"
 #endif
 
+// no idea for a default width, just choose something
+#define DEFAULT_FIELD_WIDTH 25
+
 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------
@@ -59,6 +62,7 @@ wxStatusBar::wxStatusBar()
     SetParent(NULL);
     m_hWnd = 0;
     m_windowId = 0;
+    m_pDC = NULL;
 }
 
 bool wxStatusBar::Create(wxWindow *parent,
@@ -131,6 +135,9 @@ bool wxStatusBar::Create(wxWindow *parent,
     // work correctly, we need to wait until we return to the main loop
     PostSizeEventToParent();
 
+    // cache the DC instance used by UpdateFieldText
+    m_pDC = new wxClientDC(this);
+
     return true;
 }
 
@@ -142,6 +149,15 @@ wxStatusBar::~wxStatusBar()
     PostSizeEventToParent();
 }
 
+bool wxStatusBar::SetFont(const wxFont& font)
+{
+    if (!wxWindow::SetFont(font))
+        return false;
+
+    m_pDC->SetFont(font);
+    return true;
+}
+
 void wxStatusBar::SetFieldsCount(int nFields, const int *widths)
 {
     // this is a Windows limitation
@@ -198,6 +214,16 @@ void wxStatusBar::SetStatusText(const wxString& strText, int nField)
        return;
     }
 
+    wxStatusBarBase::SetStatusText(strText, nField);
+
+    UpdateFieldText(nField);
+}
+
+void wxStatusBar::UpdateFieldText(int nField)
+{
+    if (!m_pDC)
+        return;
+
     // Get field style, if any
     int style;
     switch(m_panes[nField].nStyle)
@@ -215,29 +241,30 @@ void wxStatusBar::SetStatusText(const wxString& strText, int nField)
         break;
     }
 
+    wxRect rc;
+    GetFieldRect(nField, rc);
+
+    int margin;
+    if (nField == GetFieldsCount()-1)
+        margin = -6;        // windows reports a smaller rect for the last field; enlarge it
+    else
+        margin = 4;
+
+    // do we need to ellipsize this string?
+    wxString ellipsizedStr =
+        wxControl::Ellipsize(GetStatusText(nField), *m_pDC,
+            GetLayoutDirection() == wxLayout_RightToLeft ? wxELLIPSIZE_START : wxELLIPSIZE_END,
+            rc.GetWidth() - margin,    // leave a small margin
+            wxELLIPSIZE_EXPAND_TAB);
+
     // Pass both field number and style. MSDN library doesn't mention
     // that nField and style have to be 'ORed'
-    if ( !StatusBar_SetText(GetHwnd(), nField | style, strText.wx_str()) )
+    if ( !StatusBar_SetText(GetHwnd(), nField | style, ellipsizedStr.wx_str()) )
     {
         wxLogLastError(wxT("StatusBar_SetText"));
     }
 }
 
-wxString wxStatusBar::GetStatusText(int nField) const
-{
-    wxCHECK_MSG( (nField >= 0) && ((size_t)nField < m_panes.GetCount()), wxEmptyString,
-                 _T("invalid statusbar field index") );
-
-    wxString str;
-    int len = StatusBar_GetTextLen(GetHwnd(), nField);
-    if ( len > 0 )
-    {
-        StatusBar_GetText(GetHwnd(), nField, wxStringBuffer(str, len));
-    }
-
-    return str;
-}
-
 int wxStatusBar::GetBorderX() const
 {
     int aBorders[3];
@@ -295,9 +322,6 @@ bool wxStatusBar::GetFieldRect(int i, wxRect& rect) const
     return true;
 }
 
-// no idea for a default width, just choose something
-#define DEFAULT_FIELD_WIDTH 25
-
 wxSize wxStatusBar::DoGetBestSize() const
 {
     int borders[3];
@@ -330,7 +354,6 @@ wxSize wxStatusBar::DoGetBestSize() const
         width = 2*DEFAULT_FIELD_WIDTH;
     }
 
-
     // calculate height
     int height;
     wxGetCharSize(GetHWND(), NULL, &height, GetFont());
@@ -454,6 +477,14 @@ wxStatusBar::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
     }
 #endif
 
+    if ( nMsg == WM_SIZE )
+    {
+        for (int i=0; i<GetFieldsCount(); i++)
+            UpdateFieldText(i);
+            // re-set the field text, in case we need to ellipsize
+            // (or de-ellipsize) some parts of it
+    }
+
     return wxStatusBarBase::MSWWindowProc(nMsg, wParam, lParam);
 }
 

src/osx/carbon/statbrma.cpp

@@ -23,6 +23,9 @@
 
 #include "wx/osx/private.h"
 
+// Margin between the field text and the field rect
+#define wxFIELD_TEXT_MARGIN 2
+
 
 BEGIN_EVENT_TABLE(wxStatusBarMac, wxStatusBarGeneric)
     EVT_PAINT(wxStatusBarMac::OnPaint)
@@ -67,55 +70,60 @@ bool wxStatusBarMac::Create(wxWindow *parent, wxWindowID id,
     return true;
 }
 
-void wxStatusBarMac::DrawFieldText(wxDC& dc, int i)
+void wxStatusBarMac::DrawFieldText(wxDC& dc, const wxRect& rect, int i, int textHeight)
 {
     int w, h;
     GetSize( &w , &h );
-    wxRect rect;
-    GetFieldRect( i, rect );
 
     if ( !MacIsReallyHilited() )
         dc.SetTextForeground( wxColour( 0x80, 0x80, 0x80 ) );
 
     wxString text(GetStatusText( i ));
 
-    wxCoord x, y;
-    dc.GetTextExtent(text, &x, &y);
+    /*wxCoord x, y;
+    dc.GetTextExtent(text, &x, &y);    -- seems unused (FM)*/
 
-    int leftMargin = 2;
-    int xpos = rect.x + leftMargin + 1;
+    int xpos = rect.x + wxFIELD_TEXT_MARGIN + 1;
     int ypos = 1;
 
     if ( MacGetTopLevelWindow()->GetExtraStyle() & wxFRAME_EX_METAL )
         ypos++;
 
     dc.SetClippingRegion(rect.x, 0, rect.width, h);
-
     dc.DrawText(text, xpos, ypos);
-
     dc.DestroyClippingRegion();
 }
 
-void wxStatusBarMac::DrawField(wxDC& dc, int i)
+void wxStatusBarMac::DrawField(wxDC& dc, int i, int textHeight)
 {
-    DrawFieldText(dc, i);
+    wxRect rect;
+    GetFieldRect(i, rect);
+
+    DrawFieldText(dc, rect, i, textHeight);
 }
 
 void wxStatusBarMac::SetStatusText(const wxString& text, int number)
 {
+    // NOTE: seems this function is identic to wxStatusBarGeneric::SetStatusText;
+    //       probably can be removed without problems (FM)
+
     wxCHECK_RET( (number >= 0) && ((size_t)number < m_panes.GetCount()),
         wxT("invalid status bar field index") );
 
-    if ( m_statusStrings[number] == text )
-        return ;
+    if ( GetStatusText(number) == text )
+        return;
+
+    wxStatusBarGeneric::SetStatusText(text, number);
 
-    m_statusStrings[number] = text;
     wxRect rect;
     GetFieldRect(number, rect);
+
     int w, h;
     GetSize( &w, &h );
+
     rect.y = 0;
     rect.height = h ;
+
     Refresh( true, &rect );
     Update();
 }
@@ -162,12 +170,15 @@ void wxStatusBarMac::OnPaint(wxPaintEvent& WXUNUSED(event))
         dc.DrawLine(0, 0, w, 0);
     }
 
-    if ( GetFont().Ok() )
+    if ( GetFont().IsOk() )
         dc.SetFont(GetFont());
     dc.SetBackgroundMode(wxTRANSPARENT);
 
+    // compute char height only once for all panes:
+    int textHeight = dc.GetCharHeight();
+
     for ( size_t i = 0; i < m_panes.GetCount(); i ++ )
-        DrawField(dc, i);
+        DrawField(dc, i, textHeight);
 }
 
 void wxStatusBarMac::MacHiliteChanged()

src/univ/statusbr.cpp

@@ -134,7 +134,7 @@ void wxStatusBarUniv::DoDraw(wxControlRenderer *renderer)
                 flags |= wxCONTROL_SIZEGRIP;
             }
 
-            m_renderer->DrawStatusField(dc, rect, m_statusText[n], flags, m_panes[n].nStyle);
+            m_renderer->DrawStatusField(dc, rect, GetStatusText(n), flags, m_panes[n].nStyle);
         }
 
         rect.x += rect.width + borderBetweenFields;
@@ -159,24 +159,17 @@ void wxStatusBarUniv::SetStatusText(const wxString& text, int number)
     wxCHECK_RET( number >= 0 && (size_t)number < m_panes.GetCount(),
                  _T("invalid status bar field index in SetStatusText()") );
 
-    if ( text == m_statusText[number] )
+    if ( text == GetStatusText(number) )
     {
         // nothing changed
         return;
     }
 
-    m_statusText[number] = text;
+    wxStatusBarBase::SetStatusText(text, number);
 
     RefreshField(number);
 }
 
-wxString wxStatusBarUniv::GetStatusText(int number) const
-{
-    wxCHECK_MSG( number >= 0 && (size_t)number < m_panes.GetCount(), wxEmptyString,
-                 _T("invalid status bar field index") );
-
-    return m_statusText[number];
-}
 
 // ----------------------------------------------------------------------------
 // fields count/widths
@@ -184,7 +177,6 @@ wxString wxStatusBarUniv::GetStatusText(int number) const
 
 void wxStatusBarUniv::SetFieldsCount(int number, const int *widths)
 {
-    m_statusText.SetCount(number);
     wxStatusBarBase::SetFieldsCount(number, widths);
 
     m_widthsAbs.Empty();