Factor out text measurement from wxDC and wxWindow into wxTextMeasure.

[wxWidgets.git] / src / html / htmlwin.cpp

diff --git a/src/html/htmlwin.cpp b/src/html/htmlwin.cpp
index 2b0e4b96cbe41d930b29a865cdf9b361ed72ce14..52ba2a51c418fbb1ca9c41db1195c2e23f83a4c7 100644 (file)
--- a/src/html/htmlwin.cpp
+++ b/src/html/htmlwin.cpp
@@ -469,14 +469,13 @@ bool wxHtmlWindow::DoSetPage(const wxString& source)
     SetBackgroundImage(wxNullBitmap);
 
     m_Parser->SetDC(dc);
-    if (m_Cell)
-    {
-        delete m_Cell;
-        // notice that it's important to set m_Cell to NULL here before calling
-        // Parse() below, even if it will be overwritten by its return value:
-        // without this we may crash if it's used from inside Parse()
-        m_Cell = NULL;
-    }
+
+    // notice that it's important to set m_Cell to NULL here before calling
+    // Parse() below, even if it will be overwritten by its return value as
+    // without this we may crash if it's used from inside Parse(), so use
+    // wxDELETE() and not just delete here
+    wxDELETE(m_Cell);
+
     m_Cell = (wxHtmlContainerCell*) m_Parser->Parse(newsrc);
     delete dc;
     m_Cell->SetIndent(m_Borders, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
@@ -799,8 +798,7 @@ void wxHtmlWindow::CreateLayout()
     }
 }
 
-
-
+#if wxUSE_CONFIG
 void wxHtmlWindow::ReadCustomization(wxConfigBase *cfg, wxString path)
 {
     wxString oldpath;
@@ -853,8 +851,7 @@ void wxHtmlWindow::WriteCustomization(wxConfigBase *cfg, wxString path)
     if (path != wxEmptyString)
         cfg->SetPath(oldpath);
 }
-
-
+#endif // wxUSE_CONFIG
 
 bool wxHtmlWindow::HistoryBack()
 {
@@ -1105,6 +1102,19 @@ void wxHtmlWindow::DoEraseBackground(wxDC& dc)
     }
 }
 
+void wxHtmlWindow::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
+{
+    // We never get real erase background events as we changed our background
+    // style to wxBG_STYLE_PAINT in our ctor so the only time when we get here
+    // is when an artificial wxEraseEvent is generated by our own OnPaint()
+    // below. This handler only exists to stop the event from propagating
+    // downwards to wxWindow which may erase the background itself when it gets
+    // it in some ports (currently this happens in wxUniv), so we simply stop
+    // processing here and set a special flag allowing OnPaint() to see that
+    // the event hadn't been really processed.
+    m_isBgReallyErased = false;
+}
+
 void wxHtmlWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 {
     wxPaintDC dcPaint(this);
@@ -1137,11 +1147,17 @@ void wxHtmlWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 
     PrepareDC(*dc);
 
-    // erase the background: for compatibility, we must generate the event to
-    // allow the user-defined handlers to do it
+    // Erase the background: for compatibility, we must generate the event to
+    // allow the user-defined handlers to do it, hence this hack with sending
+    // an artificial wxEraseEvent to trigger the execution of such handlers.
     wxEraseEvent eraseEvent(GetId(), dc);
     eraseEvent.SetEventObject(this);
-    if ( !ProcessWindowEvent(eraseEvent) )
+
+    // Hack inside a hack: the background wasn't really erased if our own
+    // OnEraseBackground() was executed, so we need to check for the flag set
+    // by it whenever it's called.
+    m_isBgReallyErased = true; // Initially assume it wasn't.
+    if ( !ProcessWindowEvent(eraseEvent) || !m_isBgReallyErased )
     {
         // erase background ourselves
         DoEraseBackground(*dc);
@@ -1151,7 +1167,8 @@ void wxHtmlWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 
     // draw the HTML window contents
     dc->SetMapMode(wxMM_TEXT);
-    dc->SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
+    dc->SetBackgroundMode(wxTRANSPARENT);
+    dc->SetLayoutDirection(GetLayoutDirection());
 
     wxHtmlRenderingInfo rinfo;
     wxDefaultHtmlRenderingStyle rstyle;
@@ -1216,7 +1233,7 @@ void wxHtmlWindow::OnSize(wxSizeEvent& event)
     {
         m_selection->Set(m_selection->GetFromCell(),
                          m_selection->GetToCell());
-        m_selection->ClearPrivPos();
+        m_selection->ClearFromToCharacterPos();
     }
 
     Refresh();
@@ -1284,7 +1301,8 @@ void wxHtmlWindow::OnMouseUp(wxMouseEvent& event)
 #endif // wxUSE_CLIPBOARD
 
     wxPoint pos = CalcUnscrolledPosition(event.GetPosition());
-    wxHtmlWindowMouseHelper::HandleMouseClick(m_Cell, pos, event);
+    if ( !wxHtmlWindowMouseHelper::HandleMouseClick(m_Cell, pos, event) )
+        event.Skip();
 }
 
 #if wxUSE_CLIPBOARD
@@ -1417,7 +1435,7 @@ void wxHtmlWindow::OnInternalIdle()
                         m_selection->Set(wxPoint(x,y), selcell,
                                          m_tmpSelFromPos, m_tmpSelFromCell);
                     }
-                    m_selection->ClearPrivPos();
+                    m_selection->ClearFromToCharacterPos();
                     Refresh();
                 }
             }
@@ -1526,6 +1544,10 @@ void wxHtmlWindow::OnKeyUp(wxKeyEvent& event)
 
         GetEventHandler()->ProcessEvent(evt);
     }
+    else
+    {
+        event.Skip();
+    }
 }
 
 void wxHtmlWindow::OnCopy(wxCommandEvent& WXUNUSED(event))
@@ -1578,7 +1600,7 @@ void wxHtmlWindow::SelectLine(const wxPoint& pos)
         {
             // We use following heuristic to find a "line": let the line be all
             // cells in same container as the cell under mouse cursor that are
-            // neither completely above nor completely bellow the clicked cell
+            // neither completely above nor completely below the clicked cell
             // (i.e. are likely to be words positioned on same line of text).
 
             int y1 = cell->GetAbsPos().y;
@@ -1642,9 +1664,6 @@ void wxHtmlWindow::SelectAll()
 
 IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject)
 
-#if wxUSE_EXTENDED_RTTI
-IMPLEMENT_DYNAMIC_CLASS_XTI(wxHtmlWindow, wxScrolledWindow,"wx/html/htmlwin.h")
-
 wxBEGIN_PROPERTIES_TABLE(wxHtmlWindow)
 /*
     TODO PROPERTIES
@@ -1659,9 +1678,8 @@ wxBEGIN_HANDLERS_TABLE(wxHtmlWindow)
 wxEND_HANDLERS_TABLE()
 
 wxCONSTRUCTOR_5( wxHtmlWindow , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )
-#else
-IMPLEMENT_DYNAMIC_CLASS(wxHtmlWindow,wxScrolledWindow)
-#endif
+
+wxIMPLEMENT_DYNAMIC_CLASS_XTI(wxHtmlWindow, wxScrolledWindow,"wx/html/htmlwin.h")
 
 BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow)
     EVT_SIZE(wxHtmlWindow::OnSize)
@@ -1670,6 +1688,7 @@ BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow)
     EVT_RIGHT_UP(wxHtmlWindow::OnMouseUp)
     EVT_MOTION(wxHtmlWindow::OnMouseMove)
     EVT_PAINT(wxHtmlWindow::OnPaint)
+    EVT_ERASE_BACKGROUND(wxHtmlWindow::OnEraseBackground)
 #if wxUSE_CLIPBOARD
     EVT_LEFT_DCLICK(wxHtmlWindow::OnDoubleClick)
     EVT_ENTER_WINDOW(wxHtmlWindow::OnMouseEnter)