X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cc2aecdef579e57f84eaa07cc72f62a43fc474ba..3dd30495169b650e8a37699d714f183691d8f2c5:/src/richtext/richtextctrl.cpp

diff --git a/src/richtext/richtextctrl.cpp b/src/richtext/richtextctrl.cpp
index f5302ee6ca..9f90f65488 100644
--- a/src/richtext/richtextctrl.cpp
+++ b/src/richtext/richtextctrl.cpp
@@ -264,7 +264,6 @@ bool wxRichTextCtrl::Create( wxWindow* parent, wxWindowID id, const wxString& va
     attributes.SetLineSpacing(10);
     attributes.SetParagraphSpacingAfter(10);
     attributes.SetParagraphSpacingBefore(0);
-
     SetBasicStyle(attributes);
 
     int margin = 5;
@@ -356,6 +355,7 @@ void wxRichTextCtrl::Init()
     m_selectionAnchorObject = NULL;
     m_selectionState = wxRichTextCtrlSelectionState_Normal;
     m_editable = true;
+    m_verticalScrollbarEnabled = true;
     m_caretAtLineStart = false;
     m_dragging = false;
 #if wxUSE_DRAG_AND_DROP
@@ -367,6 +367,7 @@ void wxRichTextCtrl::Init()
     m_delayedLayoutThreshold = wxRICHTEXT_DEFAULT_DELAYED_LAYOUT_THRESHOLD;
     m_caretPositionForDefaultStyle = -2;
     m_focusObject = & m_buffer;
+    m_scale = 1.0;
 }
 
 void wxRichTextCtrl::DoThaw()
@@ -439,17 +440,21 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
         // Paint the background
         PaintBackground(dc);
 
-        // wxRect drawingArea(GetLogicalPoint(wxPoint(0, 0)), GetClientSize());
-
         wxRect drawingArea(GetUpdateRegion().GetBox());
-        drawingArea.SetPosition(GetLogicalPoint(drawingArea.GetPosition()));
+        drawingArea.SetPosition(GetUnscaledPoint(GetLogicalPoint(drawingArea.GetPosition())));
+        drawingArea.SetSize(GetUnscaledSize(drawingArea.GetSize()));
 
-        wxRect availableSpace(GetClientSize());
+        wxRect availableSpace(GetUnscaledSize(GetClientSize()));
         wxRichTextDrawingContext context(& GetBuffer());
         if (GetBuffer().IsDirty())
         {
+            dc.SetUserScale(GetScale(), GetScale());
+
             GetBuffer().Layout(dc, context, availableSpace, availableSpace, wxRICHTEXT_FIXED_WIDTH|wxRICHTEXT_VARIABLE_HEIGHT);
             GetBuffer().Invalidate(wxRICHTEXT_NONE);
+
+            dc.SetUserScale(1.0, 1.0);
+
             SetupScrollbars();
         }
 
@@ -458,13 +463,18 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
         clipRect.y += GetBuffer().GetTopMargin();
         clipRect.width -= (GetBuffer().GetLeftMargin() + GetBuffer().GetRightMargin());
         clipRect.height -= (GetBuffer().GetTopMargin() + GetBuffer().GetBottomMargin());
+
+        clipRect = GetScaledRect(clipRect);
         clipRect.SetPosition(GetLogicalPoint(clipRect.GetPosition()));
+
         dc.SetClippingRegion(clipRect);
 
         int flags = 0;
         if ((GetExtraStyle() & wxRICHTEXT_EX_NO_GUIDELINES) == 0)
             flags |= wxRICHTEXT_DRAW_GUIDELINES;
 
+        dc.SetUserScale(GetScale(), GetScale());
+
         GetBuffer().Draw(dc, context, GetBuffer().GetOwnRange(), GetSelection(), drawingArea, 0 /* descent */, flags);
 
         dc.DestroyClippingRegion();
@@ -479,6 +489,8 @@ void wxRichTextCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
             ((wxRichTextCaret*) GetCaret())->DoDraw(& dc);
         }
 #endif
+
+        dc.SetUserScale(1.0, 1.0);
     }
 
 #if !wxRICHTEXT_USE_OWN_CARET
@@ -575,7 +587,7 @@ void wxRichTextCtrl::OnLeftClick(wxMouseEvent& event)
     wxRichTextObject* hitObj = NULL;
     wxRichTextObject* contextObj = NULL;
     wxRichTextDrawingContext context(& GetBuffer());
-    int hit = GetBuffer().HitTest(dc, context, event.GetLogicalPosition(dc), position, & hitObj, & contextObj);
+    int hit = GetBuffer().HitTest(dc, context, GetUnscaledPoint(event.GetLogicalPosition(dc)), position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_HONOUR_ATOMIC);
 
 #if wxUSE_DRAG_AND_DROP
     // If there's no selection, or we're not inside it, this isn't an attempt to initiate Drag'n'Drop
@@ -643,7 +655,7 @@ void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
         wxRichTextObject* contextObj = NULL;
         wxRichTextDrawingContext context(& GetBuffer());
         // Only get objects at this level, not nested, because otherwise we couldn't swipe text at a single level.
-        int hit = GetFocusObject()->HitTest(dc, context, logicalPt, position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS);
+        int hit = GetFocusObject()->HitTest(dc, context, GetUnscaledPoint(logicalPt), position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS|wxRICHTEXT_HITTEST_HONOUR_ATOMIC);
 
 #if wxUSE_DRAG_AND_DROP
         if (m_preDrag)
@@ -655,7 +667,7 @@ void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
             long position = 0;
             wxRichTextObject* hitObj = NULL;
             wxRichTextObject* contextObj = NULL;
-            int hit = GetBuffer().HitTest(dc, context, event.GetLogicalPosition(dc), position, & hitObj, & contextObj);
+            int hit = GetBuffer().HitTest(dc, context, GetUnscaledPoint(event.GetLogicalPosition(dc)), position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_HONOUR_ATOMIC);
             wxRichTextParagraphLayoutBox* oldFocusObject = GetFocusObject();
             wxRichTextParagraphLayoutBox* container = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
             if (container && container != GetFocusObject() && container->AcceptsFocus())
@@ -740,12 +752,17 @@ void wxRichTextCtrl::OnLeftUp(wxMouseEvent& event)
 void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
 {
 #if wxUSE_DRAG_AND_DROP
-    // See if we're starting Drag'n'Drop
-    if (m_preDrag)
+    size_t distance = 0;
+    if (m_preDrag || m_dragging)
     {
         int x = m_dragStartPoint.x - event.GetPosition().x;
         int y = m_dragStartPoint.y - event.GetPosition().y;
-        size_t distance = abs(x) + abs(y);
+        distance = abs(x) + abs(y);
+    }
+
+    // See if we're starting Drag'n'Drop
+    if (m_preDrag)
+    {
 #if wxUSE_DATETIME
         wxTimeSpan diff = wxDateTime::UNow() - m_dragStartTime;
 #endif
@@ -827,7 +844,7 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
         container = GetFocusObject();
     }
     wxRichTextDrawingContext context(& GetBuffer());
-    int hit = container->HitTest(dc, context, logicalPt, position, & hitObj, & contextObj, flags);
+    int hit = container->HitTest(dc, context, GetUnscaledPoint(logicalPt), position, & hitObj, & contextObj, flags);
 
     // See if we need to change the cursor
 
@@ -851,6 +868,7 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
     if (m_dragging
 #if wxUSE_DRAG_AND_DROP
         && !m_preDrag
+        && (distance > 4)
 #endif
         )
     {
@@ -861,8 +879,7 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
         // Check for dragging across multiple containers
         long position2 = 0;
         wxRichTextObject* hitObj2 = NULL, *contextObj2 = NULL;
-        wxRichTextDrawingContext context(& GetBuffer());
-        int hit2 = GetBuffer().HitTest(dc, context, logicalPt, position2, & hitObj2, & contextObj2, 0);
+        int hit2 = GetBuffer().HitTest(dc, context, GetUnscaledPoint(logicalPt), position2, & hitObj2, & contextObj2, 0);
         if (hit2 != wxRICHTEXT_HITTEST_NONE && !(hit2 & wxRICHTEXT_HITTEST_OUTSIDE) && hitObj2 && hitObj != hitObj2)
         {
             // See if we can find a common ancestor
@@ -929,10 +946,10 @@ void wxRichTextCtrl::OnMoveMouse(wxMouseEvent& event)
     if (hitObj && m_dragging && hit != wxRICHTEXT_HITTEST_NONE && m_selectionState == wxRichTextCtrlSelectionState_Normal
 #if wxUSE_DRAG_AND_DROP
         && !m_preDrag
+        && (distance > 4)
 #endif
         )
     {
-        // TODO: test closeness
         SetCaretPositionAfterClick(container, position, hit, true /* extend selection */);
     }
 }
@@ -951,7 +968,7 @@ void wxRichTextCtrl::OnRightClick(wxMouseEvent& event)
     wxRichTextObject* hitObj = NULL;
     wxRichTextObject* contextObj = NULL;
     wxRichTextDrawingContext context(& GetBuffer());
-    int hit = GetFocusObject()->HitTest(dc, context, logicalPt, position, & hitObj, & contextObj);
+    int hit = GetFocusObject()->HitTest(dc, context, GetUnscaledPoint(logicalPt), position, & hitObj, & contextObj, wxRICHTEXT_HITTEST_HONOUR_ATOMIC);
 
     if (hitObj && hitObj->GetContainer() != GetFocusObject())
     {
@@ -1176,7 +1193,7 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 
             ScrollIntoView(m_caretPosition, WXK_LEFT);
 
-            if (deletions > 0)
+            // Always send this event; wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED will be sent only if there is an actual deletion.
             {
                 wxRichTextEvent cmdEvent(
                     wxEVT_COMMAND_RICHTEXT_DELETE,
@@ -1314,7 +1331,7 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 
         ScrollIntoView(m_caretPosition, WXK_LEFT);
 
-        if (deletions > 0)
+        // Always send this event; wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED will be sent only if there is an actual deletion.
         {
             wxRichTextEvent cmdEvent(
                 wxEVT_COMMAND_RICHTEXT_DELETE,
@@ -1387,7 +1404,7 @@ void wxRichTextCtrl::OnChar(wxKeyEvent& event)
 
         ScrollIntoView(m_caretPosition, WXK_LEFT);
 
-        if (deletions > 0)
+        // Always send this event; wxEVT_COMMAND_RICHTEXT_CONTENT_DELETED will be sent only if there is an actual deletion.
         {
             wxRichTextEvent cmdEvent(
                 wxEVT_COMMAND_RICHTEXT_DELETE,
@@ -1713,7 +1730,7 @@ bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
     if (ppuY != 0)
         syUnits = sy/ppuY;
 
-    wxRect rect = line->GetRect();
+    wxRect rect = GetScaledRect(line->GetRect());
 
     bool scrolled = false;
 
@@ -1726,14 +1743,13 @@ bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
         wxRichTextObject::GetTotalMargin(dc, & GetBuffer(), GetBuffer().GetAttributes(), leftMargin, rightMargin,
             topMargin, bottomMargin);
     }
-//    clientSize.y -= GetBuffer().GetBottomMargin();
-    clientSize.y -= bottomMargin;
+    clientSize.y -= (int) (0.5 + bottomMargin * GetScale());
 
     if (GetWindowStyle() & wxRE_CENTRE_CARET)
     {
         int y = rect.y - GetClientSize().y/2;
         int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
-        if (y >= 0 && (y + clientSize.y) < GetBuffer().GetCachedSize().y)
+        if (y >= 0 && (y + clientSize.y) < (int) (0.5 + GetBuffer().GetCachedSize().y * GetScale()))
         {
             if (startYUnits != yUnits)
             {
@@ -1772,11 +1788,11 @@ bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
                 scrolled = true;
             }
         }
-        else if (rect.y < (startY + GetBuffer().GetTopMargin()))
+        else if (rect.y < (startY + (int) (0.5 + GetBuffer().GetTopMargin() * GetScale())))
         {
             // Make it scroll so this item is at the top
             // of the window
-            int y = rect.y - GetBuffer().GetTopMargin();
+            int y = rect.y - (int) (0.5 + GetBuffer().GetTopMargin() * GetScale());
             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
 
             if (startYUnits != yUnits)
@@ -1792,11 +1808,11 @@ bool wxRichTextCtrl::ScrollIntoView(long position, int keyCode)
              keyCode == WXK_HOME || keyCode == WXK_NUMPAD_HOME ||
              keyCode == WXK_PAGEUP || keyCode == WXK_NUMPAD_PAGEUP )
     {
-        if (rect.y < (startY + GetBuffer().GetBottomMargin()))
+        if (rect.y < (startY + (int) (0.5 + GetBuffer().GetBottomMargin() * GetScale())))
         {
             // Make it scroll so this item is at the top
             // of the window
-            int y = rect.y - GetBuffer().GetTopMargin();
+            int y = rect.y - (int) (0.5 + GetBuffer().GetTopMargin() * GetScale());
             int yUnits = (int) (0.5 + ((float) y)/(float) ppuY);
 
             if (startYUnits != yUnits)
@@ -1848,11 +1864,12 @@ bool wxRichTextCtrl::IsPositionVisible(long pos) const
     startX = 0;
     startY = startY * ppuY;
 
-    wxRect rect = line->GetRect();
+    wxRect rect = GetScaledRect(line->GetRect());
     wxSize clientSize = GetClientSize();
-    clientSize.y -= GetBuffer().GetBottomMargin();
+    clientSize.y -= (int) (0.5 + GetBuffer().GetBottomMargin() * GetScale());
 
-    return (rect.GetTop() >= (startY + GetBuffer().GetTopMargin())) && (rect.GetBottom() <= (startY + clientSize.y));
+    return (rect.GetTop() >= (startY + (int) (0.5 + GetBuffer().GetTopMargin() * GetScale()))) &&
+           (rect.GetBottom() <= (startY + clientSize.y));
 }
 
 void wxRichTextCtrl::SetCaretPosition(long position, bool showAtLineStart)
@@ -2083,7 +2100,7 @@ bool wxRichTextCtrl::MoveDown(int noLines, int flags)
     }
 
     wxRichTextParagraphLayoutBox* container = GetFocusObject();
-    int hitTestFlags = wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS|wxRICHTEXT_HITTEST_NO_FLOATING_OBJECTS;
+    int hitTestFlags = wxRICHTEXT_HITTEST_NO_NESTED_OBJECTS|wxRICHTEXT_HITTEST_NO_FLOATING_OBJECTS|wxRICHTEXT_HITTEST_HONOUR_ATOMIC;
 
     if (notInThisObject)
     {
@@ -2332,7 +2349,7 @@ bool wxRichTextCtrl::PageDown(int noPages, int flags)
 
 static bool wxRichTextCtrlIsWhitespace(const wxString& str)
 {
-    return str == wxT(" ") || str == wxT("\t");
+    return str == wxT(" ") || str == wxT("\t") || (!str.empty() && (str[0] == (wxChar) 160));
 }
 
 // Finds the caret position for the next word
@@ -2556,7 +2573,7 @@ void wxRichTextCtrl::SetupScrollbars(bool atTop)
     if (IsFrozen())
         return;
 
-    if (GetBuffer().IsEmpty())
+    if (GetBuffer().IsEmpty() || !m_verticalScrollbarEnabled)
     {
         SetScrollbars(0, 0, 0, 0, 0, 0);
         return;
@@ -2567,7 +2584,7 @@ void wxRichTextCtrl::SetupScrollbars(bool atTop)
     int pixelsPerUnit = 5;
     wxSize clientSize = GetClientSize();
 
-    int maxHeight = GetBuffer().GetCachedSize().y + GetBuffer().GetTopMargin();
+    int maxHeight = (int) (0.5 + GetScale() * (GetBuffer().GetCachedSize().y + GetBuffer().GetTopMargin()));
 
     // Round up so we have at least maxHeight pixels
     int unitsY = (int) (((float)maxHeight/(float)pixelsPerUnit) + 0.5);
@@ -2856,7 +2873,7 @@ wxRichTextCtrl::FindContainerAtPoint(const wxPoint pt, long& position, int& hit,
 
     wxRichTextObject* contextObj = NULL;
     wxRichTextDrawingContext context(& GetBuffer());
-    hit = GetBuffer().HitTest(dc, context, logicalPt, position, &hitObj, &contextObj, flags);
+    hit = GetBuffer().HitTest(dc, context, GetUnscaledPoint(logicalPt), position, &hitObj, &contextObj, flags);
     wxRichTextParagraphLayoutBox* container = wxDynamicCast(contextObj, wxRichTextParagraphLayoutBox);
 
     return container;
@@ -2925,6 +2942,7 @@ void wxRichTextCtrl::DoWriteText(const wxString& value, int flags)
     wxString valueUnix = wxTextFile::Translate(value, wxTextFileType_Unix);
 
     GetFocusObject()->InsertTextWithUndo(& GetBuffer(), m_caretPosition+1, valueUnix, this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
+    GetBuffer().Defragment();
 
     if ( flags & SetValue_SendEvent )
         wxTextCtrl::SendTextUpdatedEvent(this);
@@ -2995,6 +3013,13 @@ wxRichTextBox* wxRichTextCtrl::WriteTextBox(const wxRichTextAttr& textAttr)
     return box;
 }
 
+wxRichTextField* wxRichTextCtrl::WriteField(const wxString& fieldType, const wxRichTextProperties& properties,
+                            const wxRichTextAttr& textAttr)
+{
+    return GetFocusObject()->InsertFieldWithUndo(& GetBuffer(), m_caretPosition+1, fieldType, properties,
+                this, wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE, textAttr);
+}
+
 // Write a table at the current insertion point, returning the table.
 wxRichTextTable* wxRichTextCtrl::WriteTable(int rows, int cols, const wxRichTextAttr& tableAttr, const wxRichTextAttr& cellAttr)
 {
@@ -3491,7 +3516,7 @@ int wxRichTextCtrl::PrepareContextMenu(wxMenu* menu, const wxPoint& pt, bool add
     {
         wxPoint logicalPt = GetLogicalPoint(ScreenToClient(pt));
         wxRichTextDrawingContext context(& GetBuffer());
-        int hit = GetBuffer().HitTest(dc, context, logicalPt, position, & hitObj, & contextObj);
+        int hit = GetBuffer().HitTest(dc, context, GetUnscaledPoint(logicalPt), position, & hitObj, & contextObj);
 
         if (hit == wxRICHTEXT_HITTEST_ON || hit == wxRICHTEXT_HITTEST_BEFORE || hit == wxRICHTEXT_HITTEST_AFTER)
         {
@@ -3585,9 +3610,9 @@ bool wxRichTextCtrl::SetStyle(const wxRichTextRange& range, const wxRichTextAttr
     return GetFocusObject()->SetStyle(range.ToInternal(), style);
 }
 
-void wxRichTextCtrl::SetStyle(wxRichTextObject *obj, const wxRichTextAttr& textAttr)
+void wxRichTextCtrl::SetStyle(wxRichTextObject *obj, const wxRichTextAttr& textAttr, int flags)
 {
-    GetFocusObject()->SetStyle(obj, textAttr);
+    GetFocusObject()->SetStyle(obj, textAttr, flags);
 }
 
 // extended style setting operation with flags including:
@@ -3729,6 +3754,9 @@ void wxRichTextCtrl::PositionCaret(wxRichTextParagraphLayoutBox* container)
     wxRect caretRect;
     if (GetCaretPositionForIndex(GetCaretPosition(), caretRect, container))
     {
+        caretRect = GetScaledRect(caretRect);
+        int topMargin = (int) (0.5 + GetScale()*GetBuffer().GetTopMargin());
+        int bottomMargin = (int) (0.5 + GetScale()*GetBuffer().GetBottomMargin());
         wxPoint newPt = caretRect.GetPosition();
         wxSize newSz = caretRect.GetSize();
         wxPoint pt = GetPhysicalPoint(newPt);
@@ -3739,23 +3767,23 @@ void wxRichTextCtrl::PositionCaret(wxRichTextParagraphLayoutBox* container)
                 GetCaret()->SetSize(newSz);
 
             // Adjust size so the caret size and position doesn't appear in the margins
-            if (((pt.y + newSz.y) <= GetBuffer().GetTopMargin()) || (pt.y >= (GetClientSize().y - GetBuffer().GetBottomMargin())))
+            if (((pt.y + newSz.y) <= topMargin) || (pt.y >= (GetClientSize().y - bottomMargin)))
             {
                 pt.x = -200;
                 pt.y = -200;
             }
-            else if (pt.y < GetBuffer().GetTopMargin() && (pt.y + newSz.y) > GetBuffer().GetTopMargin())
+            else if (pt.y < topMargin && (pt.y + newSz.y) > topMargin)
             {
-                newSz.y -= (GetBuffer().GetTopMargin() - pt.y);
+                newSz.y -= (topMargin - pt.y);
                 if (newSz.y > 0)
                 {
-                    pt.y = GetBuffer().GetTopMargin();
+                    pt.y = topMargin;
                     GetCaret()->SetSize(newSz);
                 }
             }
-            else if (pt.y < (GetClientSize().y - GetBuffer().GetBottomMargin()) && (pt.y + newSz.y) > (GetClientSize().y - GetBuffer().GetBottomMargin()))
+            else if (pt.y < (GetClientSize().y - bottomMargin) && (pt.y + newSz.y) > (GetClientSize().y - bottomMargin))
             {
-                newSz.y = GetClientSize().y - GetBuffer().GetBottomMargin() - pt.y;
+                newSz.y = GetClientSize().y - bottomMargin - pt.y;
                 GetCaret()->SetSize(newSz);
             }
 
@@ -3769,9 +3797,9 @@ void wxRichTextCtrl::PositionCaret(wxRichTextParagraphLayoutBox* container)
 bool wxRichTextCtrl::GetCaretPositionForIndex(long position, wxRect& rect, wxRichTextParagraphLayoutBox* container)
 {
     wxClientDC dc(this);
-    dc.SetFont(GetFont());
-
     PrepareDC(dc);
+    dc.SetUserScale(GetScale(), GetScale());
+    dc.SetFont(GetFont());
 
     wxPoint pt;
     int height = 0;
@@ -3842,7 +3870,7 @@ bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
 {
     if (GetBuffer().IsDirty() || onlyVisibleRect)
     {
-        wxRect availableSpace(GetClientSize());
+        wxRect availableSpace(GetUnscaledSize(GetClientSize()));
         if (availableSpace.width == 0)
             availableSpace.width = 10;
         if (availableSpace.height == 0)
@@ -3852,13 +3880,13 @@ bool wxRichTextCtrl::LayoutContent(bool onlyVisibleRect)
         if (onlyVisibleRect)
         {
             flags |= wxRICHTEXT_LAYOUT_SPECIFIED_RECT;
-            availableSpace.SetPosition(GetLogicalPoint(wxPoint(0, 0)));
+            availableSpace.SetPosition(GetUnscaledPoint(GetLogicalPoint(wxPoint(0, 0))));
         }
 
         wxClientDC dc(this);
-        dc.SetFont(GetFont());
 
         PrepareDC(dc);
+        dc.SetFont(GetFont());
 
         wxRichTextDrawingContext context(& GetBuffer());
         GetBuffer().Defragment();
@@ -4106,7 +4134,7 @@ bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
 
     int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE|wxRICHTEXT_SETSTYLE_RESET;
 
-    if (def->IsKindOf(CLASSINFO(wxRichTextListStyleDefinition)))
+    if (wxDynamicCast(def, wxRichTextListStyleDefinition))
     {
         flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
 
@@ -4126,7 +4154,7 @@ bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
     bool isPara = false;
 
     // Make sure the attr has the style name
-    if (def->IsKindOf(CLASSINFO(wxRichTextParagraphStyleDefinition)))
+    if (wxDynamicCast(def, wxRichTextParagraphStyleDefinition))
     {
         isPara = true;
         attr.SetParagraphStyleName(def->GetName());
@@ -4136,12 +4164,12 @@ bool wxRichTextCtrl::ApplyStyle(wxRichTextStyleDefinition* def)
         // to change its style independently.
         flags |= wxRICHTEXT_SETSTYLE_PARAGRAPHS_ONLY;
     }
-    else if (def->IsKindOf(CLASSINFO(wxRichTextCharacterStyleDefinition)))
+    else if (wxDynamicCast(def, wxRichTextCharacterStyleDefinition))
         attr.SetCharacterStyleName(def->GetName());
-    else if (def->IsKindOf(CLASSINFO(wxRichTextBoxStyleDefinition)))
+    else if (wxDynamicCast(def, wxRichTextBoxStyleDefinition))
         attr.GetTextBoxAttr().SetBoxStyleName(def->GetName());
 
-    if (def->IsKindOf(CLASSINFO(wxRichTextBoxStyleDefinition)))
+    if (wxDynamicCast(def, wxRichTextBoxStyleDefinition))
     {
         if (GetFocusObject() && (GetFocusObject() != & GetBuffer()))
         {
@@ -4228,7 +4256,7 @@ bool wxRichTextCtrl::SetDefaultStyleToCursorStyle()
 /// Returns the first visible position in the current view
 long wxRichTextCtrl::GetFirstVisiblePosition() const
 {
-    wxRichTextLine* line = GetFocusObject()->GetLineAtYPosition(GetLogicalPoint(wxPoint(0, 0)).y);
+    wxRichTextLine* line = GetFocusObject()->GetLineAtYPosition(GetUnscaledPoint(GetLogicalPoint(wxPoint(0, 0))).y);
     if (line)
         return line->GetAbsoluteRange().GetStart();
     else
@@ -4399,8 +4427,8 @@ bool wxRichTextCtrl::RefreshForSelectionChange(const wxRichTextSelection& oldSel
     if (firstLine && lastLine)
     {
         wxSize clientSize = GetClientSize();
-        wxPoint pt1 = GetPhysicalPoint(firstLine->GetAbsolutePosition());
-        wxPoint pt2 = GetPhysicalPoint(lastLine->GetAbsolutePosition()) + wxPoint(0, lastLine->GetSize().y);
+        wxPoint pt1 = GetPhysicalPoint(GetScaledPoint(firstLine->GetAbsolutePosition()));
+        wxPoint pt2 = GetPhysicalPoint(GetScaledPoint(lastLine->GetAbsolutePosition())) + wxPoint(0, (int) (0.5 + lastLine->GetSize().y * GetScale()));
 
         pt1.x = 0;
         pt1.y = wxMax(0, pt1.y);
@@ -4539,7 +4567,7 @@ bool wxRichTextDropSource::GiveFeedback(wxDragResult WXUNUSED(effect))
     long position = 0;
     int hit = 0;
     wxRichTextObject* hitObj = NULL;
-    wxRichTextParagraphLayoutBox* container = m_rtc->FindContainerAtPoint(m_rtc->ScreenToClient(wxGetMousePosition()), position, hit, hitObj);
+    wxRichTextParagraphLayoutBox* container = m_rtc->FindContainerAtPoint(m_rtc->GetUnscaledPoint(m_rtc->ScreenToClient(wxGetMousePosition())), position, hit, hitObj);
 
     if (!(hit & wxRICHTEXT_HITTEST_NONE) && container && container->AcceptsFocus())
     {
@@ -4561,6 +4589,98 @@ bool wxRichTextCtrl::CanInsertContent(wxRichTextParagraphLayoutBox& WXUNUSED(con
     return true;
 }
 
+void wxRichTextCtrl::EnableVerticalScrollbar(bool enable)
+{
+    m_verticalScrollbarEnabled = enable;
+    SetupScrollbars();
+}
+
+void wxRichTextCtrl::SetFontScale(double fontScale, bool refresh)
+{
+    GetBuffer().SetFontScale(fontScale);
+    if (refresh)
+    {
+        GetBuffer().Invalidate(wxRICHTEXT_ALL);
+        Refresh();
+    }
+}
+
+void wxRichTextCtrl::SetDimensionScale(double dimScale, bool refresh)
+{
+    GetBuffer().SetDimensionScale(dimScale);
+    if (refresh)
+    {
+        GetBuffer().Invalidate(wxRICHTEXT_ALL);
+        Refresh();
+    }
+}
+
+// Sets an overall scale factor for displaying and editing the content.
+void wxRichTextCtrl::SetScale(double scale, bool refresh)
+{
+    m_scale = scale;
+    if (refresh)
+    {
+        GetBuffer().Invalidate(wxRICHTEXT_ALL);
+        Refresh();
+    }
+}
+
+// Get an unscaled point
+wxPoint wxRichTextCtrl::GetUnscaledPoint(const wxPoint& pt) const
+{
+    if (GetScale() == 1.0)
+        return pt;
+    else
+        return wxPoint((int) (0.5 + double(pt.x) / GetScale()), (int) (0.5 + double(pt.y) / GetScale()));
+}
+
+// Get a scaled point
+wxPoint wxRichTextCtrl::GetScaledPoint(const wxPoint& pt) const
+{
+    if (GetScale() == 1.0)
+        return pt;
+    else
+        return wxPoint((int) (0.5 + double(pt.x) * GetScale()), (int) (0.5 + double(pt.y) * GetScale()));
+}
+
+// Get an unscaled size
+wxSize wxRichTextCtrl::GetUnscaledSize(const wxSize& sz) const
+{
+    if (GetScale() == 1.0)
+        return sz;
+    else
+        return wxSize((int) (0.5 + double(sz.x) / GetScale()), (int) (0.5 + double(sz.y) / GetScale()));
+}
+
+// Get a scaled size
+wxSize wxRichTextCtrl::GetScaledSize(const wxSize& sz) const
+{
+    if (GetScale() == 1.0)
+        return sz;
+    else
+        return wxSize((int) (0.5 + double(sz.x) * GetScale()), (int) (0.5 + double(sz.y) * GetScale()));
+}
+
+// Get an unscaled rect
+wxRect wxRichTextCtrl::GetUnscaledRect(const wxRect& rect) const
+{
+    if (GetScale() == 1.0)
+        return rect;
+    else
+        return wxRect((int) (0.5 + double(rect.x) / GetScale()), (int) (0.5 + double(rect.y) / GetScale()),
+                      (int) (0.5 + double(rect.width) / GetScale()), (int) (0.5 + double(rect.height) / GetScale()));
+}
+
+// Get a scaled rect
+wxRect wxRichTextCtrl::GetScaledRect(const wxRect& rect) const
+{
+    if (GetScale() == 1.0)
+        return rect;
+    else
+        return wxRect((int) (0.5 + double(rect.x) * GetScale()), (int) (0.5 + double(rect.y) * GetScale()),
+                      (int) (0.5 + double(rect.width) * GetScale()), (int) (0.5 + double(rect.height) * GetScale()));
+}
 
 #if wxRICHTEXT_USE_OWN_CARET