X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/49e74855afcc26c9f9f4ab07a962a20ae7a31b13..6e9b091980fe67d20eb9dd862460b463738aae6f:/src/gtk/dcclient.cpp?ds=sidebyside

diff --git a/src/gtk/dcclient.cpp b/src/gtk/dcclient.cpp
index 7d8b303bc6..2896f3c5b2 100644
--- a/src/gtk/dcclient.cpp
+++ b/src/gtk/dcclient.cpp
@@ -252,9 +252,13 @@ static void wxFreePoolGC( GdkGC *gc )
 // wxWindowDC
 //-----------------------------------------------------------------------------
 
+#if wxUSE_NEW_DC
+IMPLEMENT_DYNAMIC_CLASS(wxGTKWindowImplDC, wxGTKImplDC)
+#else
 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
+#endif
 
-wxWindowDC::wxWindowDC()
+wxGTKWindowImplDC::wxGTKWindowImplDC()
 {
     m_penGC = (GdkGC *) NULL;
     m_brushGC = (GdkGC *) NULL;
@@ -269,7 +273,7 @@ wxWindowDC::wxWindowDC()
     m_fontdesc = (PangoFontDescription *)NULL;
 }
 
-wxWindowDC::wxWindowDC( wxWindow *window )
+wxGTKWindowImplDC::wxGTKWindowImplDC( wxWindow *window )
 {
     wxASSERT_MSG( window, wxT("DC needs a window") );
 
@@ -324,48 +328,18 @@ wxWindowDC::wxWindowDC( wxWindow *window )
        standard (as e.g. wxStatusBar) */
 
     m_owner = window;
-    
+
     if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
     {
         // reverse sense
         m_signX = -1;
-        
+
         // origin in the upper right corner
-        
-        int scroll_lines = 0;
-        int scroll_step = 0;
-        
-        // Are we using scrolling?    
-        wxScrollHelper *sh = (wxScrollHelper*) m_owner->GetScrollHelper();
-        if (sh)
-        {
-            scroll_lines = sh->GetScrollLines(wxHORIZONTAL);
-            sh->GetScrollPixelsPerUnit( &scroll_step, NULL );
-        } 
-        
-        if (scroll_lines == 0)
-        {
-            int client_width = m_owner->GetClientSize().x;
-            m_deviceOriginX = client_width;
-        }
-        else
-        {
-            // We cannot use just the virtual size here, because
-            // the virtual size may be less than the visible area
-            // due to rounding errors of the scroll steps. If the
-            // horizontal scroll step is 10 pixels and the virtual
-            // area is 97 pixels, we should be able to see or scroll
-            // to 100 pixels, so the origin is at -100, not -97.
-            int client_width = sh->GetTargetWindow()->GetClientSize().x;
-            int virtual_size = m_owner->GetVirtualSize().x;
-            int steps = (virtual_size + scroll_step - 1) / scroll_step;
-            int width = steps * scroll_step + (client_width % scroll_step);
-            m_deviceOriginX = width;
-        }
+        m_deviceOriginX = m_owner->GetClientSize().x;
     }
 }
 
-wxWindowDC::~wxWindowDC()
+wxGTKWindowImplDC::~wxGTKWindowImplDC()
 {
     Destroy();
 
@@ -375,7 +349,7 @@ wxWindowDC::~wxWindowDC()
         pango_font_description_free( m_fontdesc );
 }
 
-void wxWindowDC::SetUpDC()
+void wxGTKWindowImplDC::SetUpDC()
 {
     m_ok = true;
 
@@ -422,6 +396,8 @@ void wxWindowDC::SetUpDC()
 
     gdk_gc_set_fill( m_textGC, GDK_SOLID );
 
+    gdk_gc_set_colormap( m_textGC, m_cmap );
+
     /* m_penGC */
     m_pen.GetColour().CalcPixel( m_cmap );
     gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
@@ -465,7 +441,7 @@ void wxWindowDC::SetUpDC()
     }
 }
 
-void wxWindowDC::DoGetSize( int* width, int* height ) const
+void wxGTKWindowImplDC::DoGetSize( int* width, int* height ) const
 {
     wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
 
@@ -475,13 +451,13 @@ void wxWindowDC::DoGetSize( int* width, int* height ) const
 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
                           const wxColour & col, int style);
 
-bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
+bool wxGTKWindowImplDC::DoFloodFill(wxCoord x, wxCoord y,
                              const wxColour& col, int style)
 {
     return wxDoFloodFill(this, x, y, col, style);
 }
 
-bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
+bool wxGTKWindowImplDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
 {
     // Generic (and therefore rather inefficient) method.
     // Could be improved.
@@ -496,7 +472,7 @@ bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
     return true;
 }
 
-void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
+void wxGTKWindowImplDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -510,7 +486,7 @@ void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
     }
 }
 
-void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
+void wxGTKWindowImplDC::DoCrossHair( wxCoord x, wxCoord y )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -529,7 +505,7 @@ void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
     }
 }
 
-void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
+void wxGTKWindowImplDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
                             wxCoord xc, wxCoord yc )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
@@ -612,8 +588,11 @@ void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
         {
             gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
 
-            gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
-            gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
+            if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
+            {
+                gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
+                gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
+            }
         }
     }
 
@@ -621,7 +600,7 @@ void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
     CalcBoundingBox (x2, y2);
 }
 
-void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
+void wxGTKWindowImplDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -683,7 +662,7 @@ void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord
     CalcBoundingBox (x + width, y + height);
 }
 
-void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
+void wxGTKWindowImplDC::DoDrawPoint( wxCoord x, wxCoord y )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -693,7 +672,7 @@ void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
     CalcBoundingBox (x, y);
 }
 
-void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
+void wxGTKWindowImplDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -727,7 +706,7 @@ void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord
         delete[] gpts;
 }
 
-void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
+void wxGTKWindowImplDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -813,7 +792,7 @@ void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoor
         delete[] gdkpoints;
 }
 
-void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+void wxGTKWindowImplDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -868,14 +847,43 @@ void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord h
         }
 
         if (m_pen.GetStyle() != wxTRANSPARENT)
-            gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
+        {
+#if 1
+            if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
+                (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
+            {
+                // Use 2 1-line rects instead
+                gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
+
+                if (m_signX == -1)
+                {
+                    // Different for RTL
+                    gdk_draw_rectangle( m_window, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
+                    gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy-1, ww, hh );
+                }
+                else
+                {
+                    gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
+                    gdk_draw_rectangle( m_window, m_penGC, FALSE, xx-1, yy-1, ww, hh );
+                }
+
+                // reset
+                gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
+            }
+            else
+#endif
+            {
+                // Just use X11 for other cases
+                gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
+            }
+        }
     }
 
     CalcBoundingBox( x, y );
     CalcBoundingBox( x + width, y + height );
 }
 
-void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
+void wxGTKWindowImplDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -998,7 +1006,7 @@ void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wx
     CalcBoundingBox( x + width, y + height );
 }
 
-void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+void wxGTKWindowImplDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -1057,13 +1065,13 @@ void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord hei
     CalcBoundingBox( x + width, y + height );
 }
 
-void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
+void wxGTKWindowImplDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
 {
     // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
     DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
 }
 
-void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
+void wxGTKWindowImplDC::DoDrawBitmap( const wxBitmap &bitmap,
                                wxCoord x, wxCoord y,
                                bool useMask )
 {
@@ -1079,10 +1087,10 @@ void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
 
     int w = bitmap.GetWidth();
     int h = bitmap.GetHeight();
-    
+
     if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
         xx -= w;
-        
+
     CalcBoundingBox( x, y );
     CalcBoundingBox( x + w, y + h );
 
@@ -1105,13 +1113,12 @@ void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
     if ((w != ww) || (h != hh))
         use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
 
-#if !GTK_CHECK_VERSION(2,2,0)
     // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
     //     Pixbufs-based bitmaps with alpha channel don't have a mask, so we
     //     have to call GetPixmap() here -- it converts the pixbuf into pixmap
     //     and also creates the mask as a side-effect:
-    use_bitmap.GetPixmap();
-#endif
+    if (gtk_check_version(2,2,0))
+        use_bitmap.GetPixmap();
 
     // apply mask if any
     GdkBitmap *mask = (GdkBitmap *) NULL;
@@ -1195,7 +1202,7 @@ void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
     }
 }
 
-bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
+bool wxGTKWindowImplDC::DoBlit( wxCoord xdest, wxCoord ydest,
                          wxCoord width, wxCoord height,
                          wxDC *source,
                          wxCoord xsrc, wxCoord ysrc,
@@ -1213,8 +1220,14 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     xsrc = source->LogicalToDeviceX(xsrc);
     ysrc = source->LogicalToDeviceY(ysrc);
 
-    wxClientDC *srcDC = (wxClientDC*)source;
-    wxMemoryDC *memDC = (wxMemoryDC*)source;
+    wxBitmap selected;
+    wxMemoryDC *memDC = wxDynamicCast(source, wxMemoryDC);
+    if ( memDC )
+    {
+        selected = memDC->GetSelectedBitmap();
+        if ( !selected.IsOk() )
+            return false;
+    }
 
     bool use_bitmap_method = false;
     bool is_mono = false;
@@ -1225,11 +1238,9 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
         ysrcMask = ysrc;
     }
 
-    if (srcDC->m_isMemDC)
+    if (selected.Ok())
     {
-        if (!memDC->m_selected.Ok()) return false;
-
-        is_mono = (memDC->m_selected.GetDepth() == 1);
+        is_mono = (selected.GetDepth() == 1);
 
         // we use the "XCopyArea" way to copy a memory dc into
         // a different window if the memory dc BOTH
@@ -1237,7 +1248,7 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
         // b) it is clipped
         // c) is not 1-bit
 
-        if (useMask && (memDC->m_selected.GetMask()))
+        if (useMask && (selected.GetMask()))
         {
             // we HAVE TO use the direct way for memory dcs
             // that have mask since the XCopyArea doesn't know
@@ -1252,8 +1263,8 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
             use_bitmap_method = true;
         }
         else if ((xsrc == 0) && (ysrc == 0) &&
-                 (width == memDC->m_selected.GetWidth()) &&
-                 (height == memDC->m_selected.GetHeight()))
+                 (width == selected.GetWidth()) &&
+                 (height == selected.GetHeight()))
         {
             // we SHOULD use the direct way if all of the bitmap
             // in the memory dc is copied in which case XCopyArea
@@ -1288,8 +1299,8 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     if (use_bitmap_method)
     {
         // scale/translate bitmap size
-        wxCoord bm_width = memDC->m_selected.GetWidth();
-        wxCoord bm_height = memDC->m_selected.GetHeight();
+        wxCoord bm_width = selected.GetWidth();
+        wxCoord bm_height = selected.GetHeight();
 
         // Get clip coords for the bitmap. If we don't
         // use wxBitmap::Rescale(), which can clip the
@@ -1310,18 +1321,19 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
         wxCoord bm_hh = YLOG2DEVREL( bm_height );
 
         // Scale bitmap if required
-        wxBitmap use_bitmap = memDC->m_selected;
-        if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
+        wxBitmap use_bitmap = selected;
+        if ((selected.GetWidth()!= bm_ww) || ( selected.GetHeight()!= bm_hh))
         {
             // This indicates that the blitting code below will get
             // a clipped bitmap and therefore needs to move the origin
             // accordingly
             wxRegion tmp( xx,yy,ww,hh );
-            tmp.Intersect( m_currentClippingRegion );
+            if (!m_currentClippingRegion.IsNull())
+                tmp.Intersect( m_currentClippingRegion );
             tmp.GetBox(cx,cy,cw,ch);
 
             // Scale and clipped bitmap
-            use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
+            use_bitmap = selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
         }
 
         // apply mask if any
@@ -1401,7 +1413,7 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     }
     else // use_bitmap_method
     {
-        if ((width != ww) || (height != hh))
+        if (selected.Ok() && ((width != ww) || (height != hh)))
         {
             // get clip coords
             wxRegion tmp( xx,yy,ww,hh );
@@ -1410,7 +1422,7 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
             tmp.GetBox(cx,cy,cw,ch);
 
             // rescale bitmap
-            wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
+            wxBitmap bitmap = selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
 
             // draw scaled bitmap
             // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
@@ -1420,10 +1432,14 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
         {
             // No scaling and not a memory dc with a mask either
 
+            GdkWindow* window = source->GetGDKWindow();
+            if ( !window )
+                return false;
+
             // copy including child window contents
             gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
             gdk_draw_drawable( m_window, m_penGC,
-                               srcDC->GetWindow(),
+                               window,
                                xsrc, ysrc, xx, yy,
                                width, height );
             gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
@@ -1435,7 +1451,7 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     return true;
 }
 
-void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
+void wxGTKWindowImplDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -1450,13 +1466,53 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
     wxCHECK_RET( m_layout, wxT("no Pango layout") );
     wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
 
+    gdk_pango_context_set_colormap( m_context, m_cmap );
+
     bool underlined = m_font.Ok() && m_font.GetUnderlined();
 
     const wxCharBuffer data = wxGTK_CONV( text );
     if ( !data )
         return;
-    const size_t datalen = strlen(data);
-    pango_layout_set_text( m_layout, data, datalen);
+    size_t datalen = strlen(data);
+
+    // in Pango >= 1.16 the "underline of leading/trailing spaces" bug
+    // has been fixed and thus the hack implemented below should never be used
+    static bool pangoOk = !wx_pango_version_check(1, 16, 0);
+
+    bool needshack = underlined && !pangoOk;
+    char *hackstring = NULL;
+
+    if (needshack)
+    {
+        // a PangoLayout which has leading/trailing spaces with underlined font
+        // is not correctly drawn by this pango version: Pango won't underline the spaces.
+        // This can be a problem; e.g. wxHTML rendering of underlined text relies on
+        // this behaviour. To workaround this problem, we use a special hack here
+        // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
+        // empty space characters and give them a dummy colour attribute.
+        // This will force Pango to underline the leading/trailing spaces, too.
+
+        // need to realloc the string to prepend & append our special characters
+        hackstring = (char*)malloc((datalen+7)*sizeof(char));
+
+        // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
+        strcpy(hackstring, "\342\200\214");
+
+        // copy the user string
+        memcpy(&hackstring[3], data, datalen);
+
+        // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
+        strcpy(&hackstring[datalen+3], "\342\200\214");
+
+        // the special characters that we added require 6 additional bytes:
+        datalen += 6;
+
+        pango_layout_set_text(m_layout, hackstring, datalen);
+    }
+    else
+    {
+        pango_layout_set_text(m_layout, data, datalen);
+    }
 
     if (underlined)
     {
@@ -1465,6 +1521,22 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
         a->start_index = 0;
         a->end_index = datalen;
         pango_attr_list_insert(attrs, a);
+
+        if (needshack)
+        {
+            // dummy colour for the leading space
+            a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
+            a->start_index = 0;
+            a->end_index = 1;
+            pango_attr_list_insert(attrs, a);
+
+            // dummy colour for the trailing space
+            a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
+            a->start_index = datalen - 1;
+            a->end_index = datalen;
+            pango_attr_list_insert(attrs, a);
+        }
+
         pango_layout_set_attributes(m_layout, attrs);
         pango_attr_list_unref(attrs);
     }
@@ -1514,7 +1586,7 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
             gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
             gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
         }
-        
+
         // Draw layout.
         if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
             gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
@@ -1535,6 +1607,9 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
     height = wxCoord(height / m_scaleY);
     CalcBoundingBox (x + width, y + height);
     CalcBoundingBox (x, y);
+
+    if (hackstring)
+        free(hackstring);
 }
 
 
@@ -1542,7 +1617,7 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
 // a better approach here:
 //           http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
 
-void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
+void wxGTKWindowImplDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
 {
     if (!m_window || text.empty())
         return;
@@ -1644,10 +1719,10 @@ void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y,
     CalcBoundingBox(x + maxX, y + maxY);
 }
 
-void wxWindowDC::DoGetTextExtent(const wxString &string,
+void wxGTKWindowImplDC::DoGetTextExtent(const wxString &string,
                                  wxCoord *width, wxCoord *height,
                                  wxCoord *descent, wxCoord *externalLeading,
-                                 wxFont *theFont) const
+                                 const wxFont *theFont) const
 {
     if ( width )
         *width = 0;
@@ -1703,11 +1778,55 @@ void wxWindowDC::DoGetTextExtent(const wxString &string,
     }
 
     // Reset old font description
-    if (theFont)
+    if (theFont->IsOk())
         pango_layout_set_font_description( m_layout, m_fontdesc );
 }
 
-wxCoord wxWindowDC::GetCharWidth() const
+
+bool wxGTKWindowImplDC::DoGetPartialTextExtents(const wxString& text,
+                                         wxArrayInt& widths) const
+{
+    const size_t len = text.length();
+    widths.Empty();
+    widths.Add(0, len);
+
+    if (text.empty())
+        return true;
+
+    // Set layout's text
+    const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(text, m_font);
+    if ( !dataUTF8 )
+    {
+        // hardly ideal, but what else can we do if conversion failed?
+        wxLogLastError(wxT("DoGetPartialTextExtents"));
+        return false;
+    }
+
+    pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
+
+    // Calculate the position of each character based on the widths of
+    // the previous characters
+
+    // Code borrowed from Scintilla's PlatGTK
+    PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
+    PangoRectangle pos;
+    pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
+    size_t i = 0;
+    while (pango_layout_iter_next_cluster(iter))
+    {
+        pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
+        int position = PANGO_PIXELS(pos.x);
+        widths[i++] = position;
+    }
+    while (i < len)
+        widths[i++] = PANGO_PIXELS(pos.x + pos.width);
+    pango_layout_iter_free(iter);
+
+    return true;
+}
+
+
+wxCoord wxGTKWindowImplDC::GetCharWidth() const
 {
     pango_layout_set_text( m_layout, "H", 1 );
     int w;
@@ -1715,13 +1834,18 @@ wxCoord wxWindowDC::GetCharWidth() const
     return w;
 }
 
-wxCoord wxWindowDC::GetCharHeight() const
+wxCoord wxGTKWindowImplDC::GetCharHeight() const
 {
     PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
-    return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
+    wxCHECK_MSG( metrics, -1, _T("failed to get pango font metrics") );
+
+    wxCoord h = PANGO_PIXELS (pango_font_metrics_get_descent (metrics) +
+                pango_font_metrics_get_ascent (metrics));
+    pango_font_metrics_unref (metrics);
+    return h;
 }
 
-void wxWindowDC::Clear()
+void wxGTKWindowImplDC::Clear()
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -1759,7 +1883,7 @@ void wxWindowDC::Clear()
 #endif // 0/1
 }
 
-void wxWindowDC::SetFont( const wxFont &font )
+void wxGTKWindowImplDC::SetFont( const wxFont &font )
 {
     m_font = font;
 
@@ -1793,7 +1917,7 @@ void wxWindowDC::SetFont( const wxFont &font )
     }
 }
 
-void wxWindowDC::SetPen( const wxPen &pen )
+void wxGTKWindowImplDC::SetPen( const wxPen &pen )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -1943,7 +2067,7 @@ void wxWindowDC::SetPen( const wxPen &pen )
     gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
 }
 
-void wxWindowDC::SetBrush( const wxBrush &brush )
+void wxGTKWindowImplDC::SetBrush( const wxBrush &brush )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -1988,7 +2112,7 @@ void wxWindowDC::SetBrush( const wxBrush &brush )
     }
 }
 
-void wxWindowDC::SetBackground( const wxBrush &brush )
+void wxGTKWindowImplDC::SetBackground( const wxBrush &brush )
 {
    /* CMB 21/7/98: Added SetBackground. Sets background brush
     * for Clear() and bg colour for shapes filled with cross-hatch brush */
@@ -2033,7 +2157,7 @@ void wxWindowDC::SetBackground( const wxBrush &brush )
     }
 }
 
-void wxWindowDC::SetLogicalFunction( int function )
+void wxGTKWindowImplDC::SetLogicalFunction( int function )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -2081,7 +2205,7 @@ void wxWindowDC::SetLogicalFunction( int function )
     gdk_gc_set_function( m_textGC, mode );
 }
 
-void wxWindowDC::SetTextForeground( const wxColour &col )
+void wxGTKWindowImplDC::SetTextForeground( const wxColour &col )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -2100,7 +2224,7 @@ void wxWindowDC::SetTextForeground( const wxColour &col )
     }
 }
 
-void wxWindowDC::SetTextBackground( const wxColour &col )
+void wxGTKWindowImplDC::SetTextBackground( const wxColour &col )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -2117,7 +2241,7 @@ void wxWindowDC::SetTextBackground( const wxColour &col )
     }
 }
 
-void wxWindowDC::SetBackgroundMode( int mode )
+void wxGTKWindowImplDC::SetBackgroundMode( int mode )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -2135,12 +2259,12 @@ void wxWindowDC::SetBackgroundMode( int mode )
     }
 }
 
-void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
+void wxGTKWindowImplDC::SetPalette( const wxPalette& WXUNUSED(palette) )
 {
-    wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
+    wxFAIL_MSG( wxT("wxGTKWindowImplDC::SetPalette not implemented") );
 }
 
-void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+void wxGTKWindowImplDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -2177,7 +2301,7 @@ void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoo
     gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
 }
 
-void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region  )
+void wxGTKWindowImplDC::DoSetClippingRegionAsRegion( const wxRegion &region  )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -2209,7 +2333,7 @@ void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region  )
     gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
 }
 
-void wxWindowDC::DestroyClippingRegion()
+void wxGTKWindowImplDC::DestroyClippingRegion()
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
@@ -2240,7 +2364,7 @@ void wxWindowDC::DestroyClippingRegion()
     }
 }
 
-void wxWindowDC::Destroy()
+void wxGTKWindowImplDC::Destroy()
 {
     if (m_penGC) wxFreePoolGC( m_penGC );
     m_penGC = (GdkGC*) NULL;
@@ -2252,26 +2376,26 @@ void wxWindowDC::Destroy()
     m_bgGC = (GdkGC*) NULL;
 }
 
-void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
+void wxGTKWindowImplDC::SetDeviceOrigin( wxCoord x, wxCoord y )
 {
     m_deviceOriginX = x;
     m_deviceOriginY = y;
-    
+
     ComputeScaleAndOrigin();
 }
 
-void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+void wxGTKWindowImplDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
 {
     m_signX = (xLeftRight ?  1 : -1);
     m_signY = (yBottomUp  ? -1 :  1);
-    
+
     if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
-        m_signX = -m_signX;        
-        
+        m_signX = -m_signX;
+
     ComputeScaleAndOrigin();
 }
 
-void wxWindowDC::ComputeScaleAndOrigin()
+void wxGTKWindowImplDC::ComputeScaleAndOrigin()
 {
     const wxRealPoint origScale(m_scaleX, m_scaleY);
 
@@ -2289,12 +2413,12 @@ void wxWindowDC::ComputeScaleAndOrigin()
 }
 
 // Resolution in pixels per logical inch
-wxSize wxWindowDC::GetPPI() const
+wxSize wxGTKWindowImplDC::GetPPI() const
 {
     return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
 }
 
-int wxWindowDC::GetDepth() const
+int wxGTKWindowImplDC::GetDepth() const
 {
     return gdk_drawable_get_depth(m_window);
 }
@@ -2304,7 +2428,11 @@ int wxWindowDC::GetDepth() const
 // wxPaintDC
 //-----------------------------------------------------------------------------
 
+#if wxUSE_NEW_DC
+IMPLEMENT_DYNAMIC_CLASS(wxGTKPaintImplDC, wxGTKClientImplDC)
+#else
 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
+#endif
 
 // Limit the paint region to the window size. Sometimes
 // the paint region is too big, and this risks X11 errors
@@ -2325,15 +2453,15 @@ static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
     }
 }
 
-wxPaintDC::wxPaintDC( wxWindow *win )
-         : wxClientDC( win )
+wxGTKPaintImplDC::wxGTKPaintImplDC( wxWindow *win )
+         : wxGTKClientImplDC( win )
 {
 #if USE_PAINT_REGION
     if (!win->m_clipPaintRegion)
         return;
 
     wxSize sz = win->GetSize();
-    m_paintClippingRegion = win->GetUpdateRegion();
+    m_paintClippingRegion = win->m_nativeUpdateRegion;
     wxLimitRegionToSize(m_paintClippingRegion, sz);
 
     GdkRegion *region = m_paintClippingRegion.GetRegion();
@@ -2357,12 +2485,16 @@ wxPaintDC::wxPaintDC( wxWindow *win )
 // wxClientDC
 //-----------------------------------------------------------------------------
 
+#if wxUSE_NEW_DC
+IMPLEMENT_DYNAMIC_CLASS(wxGTKClientImplDC, wxGTKWindowImplDC)
+#else
 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
+#endif
 
-wxClientDC::wxClientDC( wxWindow *win )
-          : wxWindowDC( win )
+wxGTKClientImplDC::wxGTKClientImplDC( wxWindow *win )
+          : wxGTKWindowImplDC( win )
 {
-    wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
+    wxCHECK_RET( win, _T("NULL window in wxGTKClientImplDC::wxClientDC") );
 
 #ifdef __WXUNIVERSAL__
     wxPoint ptOrigin = win->GetClientAreaOrigin();
@@ -2372,7 +2504,7 @@ wxClientDC::wxClientDC( wxWindow *win )
 #endif // __WXUNIVERSAL__
 }
 
-void wxClientDC::DoGetSize(int *width, int *height) const
+void wxGTKClientImplDC::DoGetSize(int *width, int *height) const
 {
     wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );