Support using GetTextExtent() with empty string to get descent in wxOSX.

[wxWidgets.git] / include / wx / html / htmlwin.h

diff --git a/include/wx/html/htmlwin.h b/include/wx/html/htmlwin.h
index ff1bf5f385c53056e77f2e029325f515485d4ee0..8e0c7ca9870bdb3dab4d8f68dcb6bb0fe617e899 100644 (file)
--- a/include/wx/html/htmlwin.h
+++ b/include/wx/html/htmlwin.h
@@ -403,6 +403,7 @@ protected:
     void CreateLayout();
 
     void OnPaint(wxPaintEvent& event);
+    void OnEraseBackground(wxEraseEvent& event);
     void OnSize(wxSizeEvent& event);
     void OnMouseMove(wxMouseEvent& event);
     void OnMouseDown(wxMouseEvent& event);
@@ -469,7 +470,7 @@ protected:
     // is usually top one = all other cells are sub-cells of this one)
     wxHtmlContainerCell *m_Cell;
     // parser which is used to parse HTML input.
-    // Each wxHtmlWindow has it's own parser because sharing one global
+    // Each wxHtmlWindow has its own parser because sharing one global
     // parser would be problematic (because of reentrancy)
     wxHtmlWinParser *m_Parser;
     // contains name of actually opened page or empty string if no page opened
@@ -481,7 +482,7 @@ protected:
     // class for opening files (file system)
     wxFileSystem* m_FS;
 
-    // frame in which page title should be displayed & number of it's statusbar
+    // frame in which page title should be displayed & number of its statusbar
     // reserved for usage with this html window
     wxFrame *m_RelatedFrame;
 #if wxUSE_STATUSBAR
@@ -545,6 +546,10 @@ private:
     // if this FLAG is false, items are not added to history
     bool m_HistoryOn;
 
+    // Flag used to communicate between OnPaint() and OnEraseBackground(), see
+    // the comments near its use.
+    bool m_isBgReallyErased;
+
     // standard mouse cursors
     static wxCursor *ms_cursorLink;
     static wxCursor *ms_cursorText;
@@ -555,9 +560,9 @@ private:
 
 class WXDLLIMPEXP_FWD_HTML wxHtmlCellEvent;
 
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_COMMAND_HTML_CELL_CLICKED, wxHtmlCellEvent );
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_COMMAND_HTML_CELL_HOVER, wxHtmlCellEvent );
-wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_COMMAND_HTML_LINK_CLICKED, wxHtmlLinkEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_HTML_CELL_CLICKED, wxHtmlCellEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_HTML_CELL_HOVER, wxHtmlCellEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_HTML, wxEVT_HTML_LINK_CLICKED, wxHtmlLinkEvent );
 
 
 /*!
@@ -610,7 +615,7 @@ class WXDLLIMPEXP_HTML wxHtmlLinkEvent : public wxCommandEvent
 public:
     wxHtmlLinkEvent() {}
     wxHtmlLinkEvent(int id, const wxHtmlLinkInfo &linkinfo)
-        : wxCommandEvent(wxEVT_COMMAND_HTML_LINK_CLICKED, id)
+        : wxCommandEvent(wxEVT_HTML_LINK_CLICKED, id)
     {
         m_linkInfo = linkinfo;
     }
@@ -636,12 +641,17 @@ typedef void (wxEvtHandler::*wxHtmlLinkEventFunction)(wxHtmlLinkEvent&);
     wxEVENT_HANDLER_CAST(wxHtmlLinkEventFunction, func)
 
 #define EVT_HTML_CELL_CLICKED(id, fn) \
-    wx__DECLARE_EVT1(wxEVT_COMMAND_HTML_CELL_CLICKED, id, wxHtmlCellEventHandler(fn))
+    wx__DECLARE_EVT1(wxEVT_HTML_CELL_CLICKED, id, wxHtmlCellEventHandler(fn))
 #define EVT_HTML_CELL_HOVER(id, fn) \
-    wx__DECLARE_EVT1(wxEVT_COMMAND_HTML_CELL_HOVER, id, wxHtmlCellEventHandler(fn))
+    wx__DECLARE_EVT1(wxEVT_HTML_CELL_HOVER, id, wxHtmlCellEventHandler(fn))
 #define EVT_HTML_LINK_CLICKED(id, fn) \
-    wx__DECLARE_EVT1(wxEVT_COMMAND_HTML_LINK_CLICKED, id, wxHtmlLinkEventHandler(fn))
+    wx__DECLARE_EVT1(wxEVT_HTML_LINK_CLICKED, id, wxHtmlLinkEventHandler(fn))
+
 
+// old wxEVT_COMMAND_* constants
+#define wxEVT_COMMAND_HTML_CELL_CLICKED   wxEVT_HTML_CELL_CLICKED
+#define wxEVT_COMMAND_HTML_CELL_HOVER     wxEVT_HTML_CELL_HOVER
+#define wxEVT_COMMAND_HTML_LINK_CLICKED   wxEVT_HTML_LINK_CLICKED
 
 #endif // wxUSE_HTML