X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7b6fefbed1ef1cb879b72950d9f8fa35da128827..404b319a85dadd7decf7a5a5331020520031a41c:/src/msw/statusbar.cpp?ds=sidebyside

diff --git a/src/msw/statusbar.cpp b/src/msw/statusbar.cpp
index a913d19308..321df1bb05 100644
--- a/src/msw/statusbar.cpp
+++ b/src/msw/statusbar.cpp
@@ -9,6 +9,14 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
 // for compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -27,15 +35,29 @@
     #include "wx/dcclient.h"
     #include "wx/intl.h"
     #include "wx/log.h"
+    #include "wx/control.h"
 #endif
 
 #include "wx/msw/private.h"
+#include "wx/tooltip.h"
 #include <windowsx.h>
 
 #if wxUSE_UXTHEME
     #include "wx/msw/uxtheme.h"
 #endif
 
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+namespace
+{
+
+// no idea for a default width, just choose something
+static const int DEFAULT_FIELD_WIDTH = 25;
+
+} // anonymous namespace
+
 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------
@@ -59,69 +81,59 @@ wxStatusBar::wxStatusBar()
     SetParent(NULL);
     m_hWnd = 0;
     m_windowId = 0;
+    m_pDC = NULL;
 }
 
-bool wxStatusBar::Create(wxWindow *parent,
-                         wxWindowID id,
-                         long style,
-                         const wxString& name)
+WXDWORD wxStatusBar::MSWGetStyle(long style, WXDWORD *exstyle) const
 {
-    wxCHECK_MSG( parent, false, wxT("status bar must have a parent") );
+    WXDWORD msStyle = wxStatusBarBase::MSWGetStyle(style, exstyle);
 
-    SetName(name);
-    SetWindowStyleFlag(style);
-    SetParent(parent);
-
-    parent->AddChild(this);
-
-    m_windowId = id == wxID_ANY ? NewControlId() : id;
-
-    DWORD wstyle = WS_CHILD | WS_VISIBLE;
-
-    if ( style & wxCLIP_SIBLINGS )
-        wstyle |= WS_CLIPSIBLINGS;
+    // wxSTB_SIZEGRIP is part of our default style but it doesn't make sense to
+    // show size grip if this is the status bar of a non-resizable TLW so turn
+    // it off in such case
+    wxWindow * const parent = GetParent();
+    wxCHECK_MSG( parent, msStyle, wxS("Status bar must have a parent") );
+    if ( parent->IsTopLevel() && !parent->HasFlag(wxRESIZE_BORDER) )
+        style &= ~wxSTB_SIZEGRIP;
 
     // setting SBARS_SIZEGRIP is perfectly useless: it's always on by default
     // (at least in the version of comctl32.dll I'm using), and the only way to
     // turn it off is to use CCS_TOP style - as we position the status bar
-    // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxST_SIZEGRIP
+    // manually anyhow (see DoMoveWindow), use CCS_TOP style if wxSTB_SIZEGRIP
     // is not given
-    if ( !(style & wxST_SIZEGRIP) )
+    if ( !(style & wxSTB_SIZEGRIP) )
     {
-        wstyle |= CCS_TOP;
+        msStyle |= CCS_TOP;
     }
     else
     {
 #ifndef __WXWINCE__
         // may be some versions of comctl32.dll do need it - anyhow, it won't
         // do any harm
-        wstyle |= SBARS_SIZEGRIP;
+       msStyle |= SBARS_SIZEGRIP;
 #endif
     }
 
-    m_hWnd = CreateWindow
-             (
-                STATUSCLASSNAME,
-                _T(""),
-                wstyle,
-                0, 0, 0, 0,
-                GetHwndOf(parent),
-                (HMENU)wxUIntToPtr(m_windowId.GetValue()),
-                wxGetInstance(),
-                NULL
-             );
-    if ( m_hWnd == 0 )
-    {
-        wxLogSysError(_("Failed to create a status bar."));
+    return msStyle;
+}
 
+bool wxStatusBar::Create(wxWindow *parent,
+                         wxWindowID id,
+                         long style,
+                         const wxString& name)
+{
+    if ( !CreateControl(parent, id, wxDefaultPosition, wxDefaultSize,
+                        style, wxDefaultValidator, name) )
+        return false;
+
+    if ( !MSWCreateControl(STATUSCLASSNAME, wxString(),
+                           wxDefaultPosition, wxDefaultSize) )
         return false;
-    }
 
     SetFieldsCount(1);
-    SubclassWin(m_hWnd);
-    InheritAttributes();
 
-    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_MENUBAR));
+    // cache the DC instance used by DoUpdateStatusText:
+    m_pDC = new wxClientDC(this);
 
     // we must refresh the frame size when the statusbar is created, because
     // its client area might change
@@ -140,67 +152,121 @@ wxStatusBar::~wxStatusBar()
     // frame is not - otherwise statusbar leaves a hole in the place it used to
     // occupy
     PostSizeEventToParent();
+
+#if wxUSE_TOOLTIPS
+    // delete existing tooltips
+    for (size_t i=0; i<m_tooltips.size(); i++)
+    {
+        wxDELETE(m_tooltips[i]);
+    }
+#endif // wxUSE_TOOLTIPS
+
+    wxDELETE(m_pDC);
+}
+
+bool wxStatusBar::SetFont(const wxFont& font)
+{
+    if (!wxWindow::SetFont(font))
+        return false;
+
+    if (m_pDC) m_pDC->SetFont(font);
+    return true;
 }
 
 void wxStatusBar::SetFieldsCount(int nFields, const int *widths)
 {
     // this is a Windows limitation
-    wxASSERT_MSG( (nFields > 0) && (nFields < 255), _T("too many fields") );
+    wxASSERT_MSG( (nFields > 0) && (nFields < 255), "too many fields" );
+
+    // keep in synch also our m_tooltips array
+
+#if wxUSE_TOOLTIPS
+    // reset all current tooltips
+    for (size_t i=0; i<m_tooltips.size(); i++)
+    {
+        wxDELETE(m_tooltips[i]);
+    }
+
+    // shrink/expand the array:
+    m_tooltips.resize(nFields, NULL);
+#endif // wxUSE_TOOLTIPS
 
     wxStatusBarBase::SetFieldsCount(nFields, widths);
 
-    SetFieldsWidth();
+    MSWUpdateFieldsWidths();
 }
 
 void wxStatusBar::SetStatusWidths(int n, const int widths[])
 {
     wxStatusBarBase::SetStatusWidths(n, widths);
 
-    SetFieldsWidth();
+    MSWUpdateFieldsWidths();
 }
 
-void wxStatusBar::SetFieldsWidth()
+void wxStatusBar::MSWUpdateFieldsWidths()
 {
     if ( m_panes.IsEmpty() )
         return;
 
-    int aBorders[3];
-    SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
+    const int count = m_panes.GetCount();
+
+    const int extraWidth = MSWGetBorderWidth() + MSWGetMetrics().textMargin;
+
+    // compute the effectively available amount of space:
+    int widthAvailable = GetClientSize().x;     // start with the entire width
+    widthAvailable -= extraWidth*(count - 1);   // extra space between fields
+    widthAvailable -= MSWGetMetrics().textMargin;   // and for the last field
+
+    // Deal with the grip: we shouldn't overflow onto the space occupied by it
+    // so the effectively available space is smaller.
+    const int gripWidth = HasFlag(wxSTB_SIZEGRIP) ? MSWGetMetrics().gripWidth
+                                                  : 0;
+    widthAvailable -= gripWidth;
+
+    // distribute the available space (client width) among the various fields:
 
-    int extraWidth = aBorders[2]; // space between fields
+    wxArrayInt widthsAbs = CalculateAbsWidths(widthAvailable);
 
-    wxArrayInt widthsAbs =
-        CalculateAbsWidths(GetClientSize().x - extraWidth*(m_panes.GetCount() - 1));
 
-    int *pWidths = new int[m_panes.GetCount()];
+    // update the field widths in the native control:
+
+    int *pWidths = new int[count];
 
     int nCurPos = 0;
-    for ( int i = 0; i < m_panes.GetCount(); i++ ) {
+    int i;
+    for ( i = 0; i < count; i++ )
+    {
         nCurPos += widthsAbs[i] + extraWidth;
         pWidths[i] = nCurPos;
     }
 
-    if ( !StatusBar_SetParts(GetHwnd(), m_panes.GetCount(), pWidths) ) {
-        wxLogLastError(wxT("StatusBar_SetParts"));
+    // The total width of the panes passed to Windows must be equal to the
+    // total width available, including the grip. Otherwise we get an extra
+    // separator line just before it.
+    pWidths[count - 1] += gripWidth;
+
+    if ( !StatusBar_SetParts(GetHwnd(), count, pWidths) )
+    {
+        wxLogLastError("StatusBar_SetParts");
+    }
+
+    // Now that all parts have been created, set their text.
+    for ( i = 0; i < count; i++ )
+    {
+        DoUpdateStatusText(i);
     }
 
     delete [] pWidths;
 }
 
-void wxStatusBar::SetStatusText(const wxString& strText, int nField)
+void wxStatusBar::DoUpdateStatusText(int nField)
 {
-    wxCHECK_RET( (nField >= 0) && (nField < m_nFields),
-                 _T("invalid statusbar field index") );
-
-    if ( strText == GetStatusText(nField) )
-    {
-       // don't call StatusBar_SetText() to avoid flicker
-       return;
-    }
+    if (!m_pDC)
+        return;
 
     // Get field style, if any
     int style;
-    switch(m_panes[nField].nStyle)
+    switch(m_panes[nField].GetStyle())
     {
     case wxSB_RAISED:
         style = SBT_POPOUT;
@@ -215,66 +281,168 @@ void wxStatusBar::SetStatusText(const wxString& strText, int nField)
         break;
     }
 
-    // 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()) )
+    wxRect rc;
+    GetFieldRect(nField, rc);
+
+    const int maxWidth = rc.GetWidth() - MSWGetMetrics().textMargin;
+
+    wxString text = GetStatusText(nField);
+
+    // do we need to ellipsize this string?
+    wxEllipsizeMode ellmode = (wxEllipsizeMode)-1;
+    if (HasFlag(wxSTB_ELLIPSIZE_START)) ellmode = wxELLIPSIZE_START;
+    else if (HasFlag(wxSTB_ELLIPSIZE_MIDDLE)) ellmode = wxELLIPSIZE_MIDDLE;
+    else if (HasFlag(wxSTB_ELLIPSIZE_END)) ellmode = wxELLIPSIZE_END;
+
+    if (ellmode == (wxEllipsizeMode)-1)
     {
-        wxLogLastError(wxT("StatusBar_SetText"));
+        // if we have the wxSTB_SHOW_TIPS we must set the ellipsized flag even if
+        // we don't ellipsize the text but just truncate it
+        if (HasFlag(wxSTB_SHOW_TIPS))
+            SetEllipsizedFlag(nField, m_pDC->GetTextExtent(text).GetWidth() > maxWidth);
+    }
+    else
+    {
+        text = wxControl::Ellipsize(text,
+                                     *m_pDC,
+                                     ellmode,
+                                     maxWidth,
+                                     wxELLIPSIZE_FLAGS_EXPAND_TABS);
+
+        // update the ellipsization status for this pane; this is used later to
+        // decide whether a tooltip should be shown or not for this pane
+        // (if we have wxSTB_SHOW_TIPS)
+        SetEllipsizedFlag(nField, text != GetStatusText(nField));
     }
-}
-
-wxString wxStatusBar::GetStatusText(int nField) const
-{
-    wxCHECK_MSG( (nField >= 0) && (nField < m_panes.GetCount()), wxEmptyString,
-                 _T("invalid statusbar field index") );
 
-    wxString str;
-    int len = StatusBar_GetTextLen(GetHwnd(), nField);
-    if ( len > 0 )
+    // Set the status text in the native control passing both field number and style.
+    // NOTE: MSDN library doesn't mention that nField and style have to be 'ORed'
+    if ( !StatusBar_SetText(GetHwnd(), nField | style, text.t_str()) )
     {
-        StatusBar_GetText(GetHwnd(), nField, wxStringBuffer(str, len));
+        wxLogLastError("StatusBar_SetText");
     }
 
-    return str;
+#if wxUSE_TOOLTIPS
+    if (HasFlag(wxSTB_SHOW_TIPS))
+    {
+        wxASSERT(m_tooltips.size() == m_panes.GetCount());
+
+        if (m_tooltips[nField])
+        {
+            if (GetField(nField).IsEllipsized())
+            {
+                // update the rect of this tooltip:
+                m_tooltips[nField]->SetRect(rc);
+
+                // update also the text:
+                m_tooltips[nField]->SetTip(GetStatusText(nField));
+            }
+            else
+            {
+                // delete the tooltip associated with this pane; it's not needed anymore
+                wxDELETE(m_tooltips[nField]);
+            }
+        }
+        else
+        {
+            // create a new tooltip for this pane if needed
+            if (GetField(nField).IsEllipsized())
+                m_tooltips[nField] = new wxToolTip(this, nField, GetStatusText(nField), rc);
+            //else: leave m_tooltips[nField]==NULL
+        }
+    }
+#endif // wxUSE_TOOLTIPS
 }
 
-int wxStatusBar::GetBorderX() const
+wxStatusBar::MSWBorders wxStatusBar::MSWGetBorders() const
 {
     int aBorders[3];
     SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
 
-    return aBorders[0];
+    MSWBorders borders;
+    borders.horz = aBorders[0];
+    borders.vert = aBorders[1];
+    borders.between = aBorders[2];
+    return borders;
+}
+
+int wxStatusBar::GetBorderX() const
+{
+    return MSWGetBorders().horz;
 }
 
 int wxStatusBar::GetBorderY() const
 {
-    int aBorders[3];
-    SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)aBorders);
+    return MSWGetBorders().vert;
+}
 
-    return aBorders[1];
+int wxStatusBar::MSWGetBorderWidth() const
+{
+    return MSWGetBorders().between;
+}
+
+/* static */
+const wxStatusBar::MSWMetrics& wxStatusBar::MSWGetMetrics()
+{
+    static MSWMetrics s_metrics = { 0, 0 };
+    if ( !s_metrics.textMargin )
+    {
+        // Grip size should be self explanatory (the only problem with it is
+        // that it's hard coded as we don't know how to find its size using
+        // API) but the margin might merit an explanation: Windows offsets the
+        // text drawn in status bar panes so we need to take this extra margin
+        // into account to make sure the text drawn by user fits inside the
+        // pane. Notice that it's not the value returned by SB_GETBORDERS
+        // which, at least on this Windows 2003 system, returns {0, 2, 2}
+#if wxUSE_UXTHEME
+        if ( wxUxThemeEngine::GetIfActive() )
+        {
+            s_metrics.gripWidth = 20;
+            s_metrics.textMargin = 8;
+        }
+        else // classic/unthemed look
+#endif // wxUSE_UXTHEME
+        {
+            s_metrics.gripWidth = 18;
+            s_metrics.textMargin = 4;
+        }
+    }
+
+    return s_metrics;
 }
 
 void wxStatusBar::SetMinHeight(int height)
 {
-    SendMessage(GetHwnd(), SB_SETMINHEIGHT, height + 2*GetBorderY(), 0);
+    // It looks like we need to count the border twice to really make the
+    // controls taking exactly height pixels fully fit in the status bar:
+    // at least under Windows 7 the checkbox in the custom status bar of the
+    // statbar sample gets truncated otherwise.
+    height += 4*GetBorderY();
+
+    // We need to set the size and not the size to reflect the height because
+    // wxFrame uses our size and not the minimal size as it assumes that the
+    // size of a status bar never changes anyhow.
+    SetSize(-1, height);
 
-    // have to send a (dummy) WM_SIZE to redraw it now
+    SendMessage(GetHwnd(), SB_SETMINHEIGHT, height, 0);
+
+    // we have to send a (dummy) WM_SIZE to redraw it now
     SendMessage(GetHwnd(), WM_SIZE, 0, 0);
 }
 
 bool wxStatusBar::GetFieldRect(int i, wxRect& rect) const
 {
-    wxCHECK_MSG( (i >= 0) && (i < m_panes.GetCount()), false,
-                 _T("invalid statusbar field index") );
+    wxCHECK_MSG( (i >= 0) && ((size_t)i < m_panes.GetCount()), false,
+                 "invalid statusbar field index" );
 
     RECT r;
     if ( !::SendMessage(GetHwnd(), SB_GETRECT, i, (LPARAM)&r) )
     {
-        wxLogLastError(wxT("SendMessage(SB_GETRECT)"));
+        wxLogLastError("SendMessage(SB_GETRECT)");
     }
 
 #if wxUSE_UXTHEME
-    wxUxThemeHandle theme((wxStatusBar *)this, L"Status"); // const_cast
+    wxUxThemeHandle theme(const_cast<wxStatusBar*>(this), L"Status");
     if ( theme )
     {
         // by default Windows has a 2 pixel border to the right of the left
@@ -295,20 +463,16 @@ 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];
-    SendMessage(GetHwnd(), SB_GETBORDERS, 0, (LPARAM)borders);
+    const MSWBorders borders = MSWGetBorders();
 
     // calculate width
     int width = 0;
-    for ( int i = 0; i < m_panes.GetCount(); ++i )
+    for ( size_t i = 0; i < m_panes.GetCount(); ++i )
     {
         int widthField =
-            m_bSameWidthForAllPanes ? DEFAULT_FIELD_WIDTH : m_panes[i].nWidth;
+            m_bSameWidthForAllPanes ? DEFAULT_FIELD_WIDTH : m_panes[i].GetWidth();
         if ( widthField >= 0 )
         {
             width += widthField;
@@ -321,7 +485,7 @@ wxSize wxStatusBar::DoGetBestSize() const
         }
 
         // add the space between fields
-        width += borders[2];
+        width += borders.between;
     }
 
     if ( !width )
@@ -330,12 +494,10 @@ wxSize wxStatusBar::DoGetBestSize() const
         width = 2*DEFAULT_FIELD_WIDTH;
     }
 
-
-    // calculate height
-    int height;
-    wxGetCharSize(GetHWND(), NULL, &height, GetFont());
-    height = EDIT_HEIGHT_FROM_CHAR_HEIGHT(height);
-    height += borders[1];
+    // calculate height: by default it should be just big enough to show text
+    // (see SetMinHeight() for the explanation of 4 factor)
+    int height = GetCharHeight();
+    height += 4*borders.vert;
 
     wxSize best(width, height);
     CacheBestSize(best);
@@ -362,9 +524,6 @@ void wxStatusBar::DoMoveWindow(int x, int y, int width, int height)
                        );
     }
 
-    // adjust fields widths to the new size
-    SetFieldsWidth();
-
     // we have to trigger wxSizeEvent if there are children window in status
     // bar because GetFieldRect returned incorrect (not updated) values up to
     // here, which almost certainly resulted in incorrectly redrawn statusbar
@@ -380,7 +539,7 @@ void wxStatusBar::SetStatusStyles(int n, const int styles[])
 {
     wxStatusBarBase::SetStatusStyles(n, styles);
 
-    if (n != m_panes.GetCount())
+    if (n != (int)m_panes.GetCount())
         return;
 
     for (int i = 0; i < n; i++)
@@ -399,13 +558,14 @@ void wxStatusBar::SetStatusStyles(int n, const int styles[])
             style = 0;
             break;
         }
+
         // The SB_SETTEXT message is both used to set the field's text as well as
-        // the fields' styles. MSDN library doesn't mention
-        // that nField and style have to be 'ORed'
+        // the fields' styles.
+        // NOTE: MSDN library doesn't mention that nField and style have to be 'ORed'
         wxString text = GetStatusText(i);
-        if (!StatusBar_SetText(GetHwnd(), style | i, text.wx_str()))
+        if (!StatusBar_SetText(GetHwnd(), style | i, text.t_str()))
         {
-            wxLogLastError(wxT("StatusBar_SetText"));
+            wxLogLastError("StatusBar_SetText");
         }
     }
 }
@@ -454,7 +614,67 @@ wxStatusBar::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
     }
 #endif
 
+    if ( nMsg == WM_SIZE )
+    {
+        MSWUpdateFieldsWidths();
+
+        if ( HasFlag(wxSTB_ELLIPSIZE_START) ||
+                HasFlag(wxSTB_ELLIPSIZE_MIDDLE) ||
+                    HasFlag(wxSTB_ELLIPSIZE_END) )
+        {
+            for (int i=0; i<GetFieldsCount(); i++)
+            {
+                // re-set the field text, in case we need to ellipsize
+                // (or de-ellipsize) some parts of it
+                DoUpdateStatusText(i);
+            }
+        }
+    }
+
     return wxStatusBarBase::MSWWindowProc(nMsg, wParam, lParam);
 }
 
+#if wxUSE_TOOLTIPS
+bool wxStatusBar::MSWProcessMessage(WXMSG* pMsg)
+{
+    if ( HasFlag(wxSTB_SHOW_TIPS) )
+    {
+        // for a tooltip to be shown, we need to relay mouse events to it;
+        // this is typically done by wxWindowMSW::MSWProcessMessage but only
+        // if wxWindow::m_tooltip pointer is non-NULL.
+        // Since wxStatusBar has multiple tooltips for a single HWND, it keeps
+        // wxWindow::m_tooltip == NULL and then relays mouse events here:
+        MSG *msg = (MSG *)pMsg;
+        if ( msg->message == WM_MOUSEMOVE )
+            wxToolTip::RelayEvent(pMsg);
+    }
+
+    return wxWindow::MSWProcessMessage(pMsg);
+}
+
+bool wxStatusBar::MSWOnNotify(int WXUNUSED(idCtrl), WXLPARAM lParam, WXLPARAM* WXUNUSED(result))
+{
+    if ( HasFlag(wxSTB_SHOW_TIPS) )
+    {
+        // see comment in wxStatusBar::MSWProcessMessage for more info;
+        // basically we need to override wxWindow::MSWOnNotify because
+        // we have wxWindow::m_tooltip always NULL but we still use tooltips...
+
+        NMHDR* hdr = (NMHDR *)lParam;
+
+        wxString str;
+        if (hdr->idFrom < m_tooltips.size() && m_tooltips[hdr->idFrom])
+            str = m_tooltips[hdr->idFrom]->GetTip();
+
+        if ( HandleTooltipNotify(hdr->code, lParam, str))
+        {
+            // processed
+            return true;
+        }
+    }
+
+    return false;
+}
+#endif // wxUSE_TOOLTIPS
+
 #endif // wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR