fixing overrelease and out-of-bounds write, fixes #13725

[wxWidgets.git] / src / common / gdicmn.cpp

diff --git a/src/common/gdicmn.cpp b/src/common/gdicmn.cpp
index a79f31aa2cfd1bb9687f903f65bd23ebf9ab28cb..885ebec1443ae964b751eec77e9b18de4872ee9f 100644 (file)
--- a/src/common/gdicmn.cpp
+++ b/src/common/gdicmn.cpp
@@ -31,6 +31,7 @@
     #include "wx/bitmap.h"
     #include "wx/colour.h"
     #include "wx/font.h"
+    #include "wx/math.h"
 #endif
 
 
@@ -251,6 +252,11 @@ wxRect operator*(const wxRect& r1, const wxRect& r2)
     return wxRect(x1, y1, x2-x1, y2-y1);
 }
 
+wxRealPoint::wxRealPoint(const wxPoint& pt)
+ : x(pt.x), y(pt.y)
+{
+}
+
 // ============================================================================
 // wxColourDatabase
 // ============================================================================
@@ -404,7 +410,7 @@ void wxColourDatabase::AddColour(const wxString& name, const wxColour& colour)
 
     // ... and we also allow both grey/gray
     wxString colNameAlt = colName;
-    if ( !colNameAlt.Replace(_T("GRAY"), _T("GREY")) )
+    if ( !colNameAlt.Replace(wxT("GRAY"), wxT("GREY")) )
     {
         // but in this case it is not necessary so avoid extra search below
         colNameAlt.clear();
@@ -432,7 +438,7 @@ wxColour wxColourDatabase::Find(const wxString& colour) const
     wxString colName = colour;
     colName.MakeUpper();
     wxString colNameAlt = colName;
-    if ( !colNameAlt.Replace(_T("GRAY"), _T("GREY")) )
+    if ( !colNameAlt.Replace(wxT("GRAY"), wxT("GREY")) )
         colNameAlt.clear();
 
     wxStringToColourHashMap::iterator it = m_map->find(colName);
@@ -493,7 +499,7 @@ wxColour *wxColourDatabase::FindColour(const wxString& name)
     static wxColour s_col;
 
     s_col = Find(name);
-    if ( !s_col.Ok() )
+    if ( !s_col.IsOk() )
         return NULL;
 
     return new wxColour(s_col);
@@ -520,14 +526,13 @@ void wxStockGDI::DeleteAll()
 {
     for (unsigned i = 0; i < ITEMCOUNT; i++)
     {
-        delete ms_stockObject[i];
-        ms_stockObject[i] = NULL;
+        wxDELETE(ms_stockObject[i]);
     }
 }
 
 const wxBrush* wxStockGDI::GetBrush(Item item)
 {
-    wxBrush* brush = wx_static_cast(wxBrush*, ms_stockObject[item]);
+    wxBrush* brush = static_cast<wxBrush*>(ms_stockObject[item]);
     if (brush == NULL)
     {
         switch (item)
@@ -544,6 +549,9 @@ const wxBrush* wxStockGDI::GetBrush(Item item)
         case BRUSH_GREEN:
             brush = new wxBrush(*GetColour(COLOUR_GREEN), wxBRUSHSTYLE_SOLID);
             break;
+        case BRUSH_YELLOW:
+            brush = new wxBrush(*GetColour(COLOUR_YELLOW), wxBRUSHSTYLE_SOLID);
+            break;
         case BRUSH_GREY:
             brush = new wxBrush(wxColour(wxT("GREY")), wxBRUSHSTYLE_SOLID);
             break;
@@ -572,7 +580,7 @@ const wxBrush* wxStockGDI::GetBrush(Item item)
 
 const wxColour* wxStockGDI::GetColour(Item item)
 {
-    wxColour* colour = wx_static_cast(wxColour*, ms_stockObject[item]);
+    wxColour* colour = static_cast<wxColour*>(ms_stockObject[item]);
     if (colour == NULL)
     {
         switch (item)
@@ -589,6 +597,9 @@ const wxColour* wxStockGDI::GetColour(Item item)
         case COLOUR_GREEN:
             colour = new wxColour(0, 255, 0);
             break;
+        case COLOUR_YELLOW:
+            colour = new wxColour(255, 255, 0);
+            break;
         case COLOUR_LIGHTGREY:
             colour = new wxColour(wxT("LIGHT GREY"));
             break;
@@ -608,7 +619,7 @@ const wxColour* wxStockGDI::GetColour(Item item)
 
 const wxCursor* wxStockGDI::GetCursor(Item item)
 {
-    wxCursor* cursor = wx_static_cast(wxCursor*, ms_stockObject[item]);
+    wxCursor* cursor = static_cast<wxCursor*>(ms_stockObject[item]);
     if (cursor == NULL)
     {
         switch (item)
@@ -632,7 +643,7 @@ const wxCursor* wxStockGDI::GetCursor(Item item)
 
 const wxFont* wxStockGDI::GetFont(Item item)
 {
-    wxFont* font = wx_static_cast(wxFont*, ms_stockObject[item]);
+    wxFont* font = static_cast<wxFont*>(ms_stockObject[item]);
     if (font == NULL)
     {
         switch (item)
@@ -644,7 +655,19 @@ const wxFont* wxStockGDI::GetFont(Item item)
             font = new wxFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
             break;
         case FONT_SMALL:
-            font = new wxFont(GetFont(FONT_NORMAL)->GetPointSize() - 2, wxSWISS, wxNORMAL, wxNORMAL);
+            font = new wxFont(GetFont(FONT_NORMAL)->GetPointSize()
+                    // Using the font 2 points smaller than the normal one
+                    // results in font so small as to be unreadable under MSW.
+                    // We might want to actually use -1 under the other
+                    // platforms too but for now be conservative and keep -2
+                    // there for compatibility with the old behaviour as the
+                    // small font seems to be readable enough there as it is.
+#ifdef __WXMSW__
+                    - 1,
+#else
+                    - 2,
+#endif
+                    wxSWISS, wxNORMAL, wxNORMAL);
             break;
         case FONT_SWISS:
             font = new wxFont(GetFont(FONT_NORMAL)->GetPointSize(), wxSWISS, wxNORMAL, wxNORMAL);
@@ -659,7 +682,7 @@ const wxFont* wxStockGDI::GetFont(Item item)
 
 const wxPen* wxStockGDI::GetPen(Item item)
 {
-    wxPen* pen = wx_static_cast(wxPen*, ms_stockObject[item]);
+    wxPen* pen = static_cast<wxPen*>(ms_stockObject[item]);
     if (pen == NULL)
     {
         switch (item)
@@ -670,12 +693,18 @@ const wxPen* wxStockGDI::GetPen(Item item)
         case PEN_BLACKDASHED:
             pen = new wxPen(*GetColour(COLOUR_BLACK), 1, wxPENSTYLE_SHORT_DASH);
             break;
+        case PEN_BLUE:
+            pen = new wxPen(*GetColour(COLOUR_BLUE), 1, wxPENSTYLE_SOLID);
+            break;
         case PEN_CYAN:
             pen = new wxPen(*GetColour(COLOUR_CYAN), 1, wxPENSTYLE_SOLID);
             break;
         case PEN_GREEN:
             pen = new wxPen(*GetColour(COLOUR_GREEN), 1, wxPENSTYLE_SOLID);
             break;
+        case PEN_YELLOW:
+            pen = new wxPen(*GetColour(COLOUR_YELLOW), 1, wxPENSTYLE_SOLID);
+            break;
         case PEN_GREY:
             pen = new wxPen(wxColour(wxT("GREY")), 1, wxPENSTYLE_SOLID);
             break;
@@ -716,6 +745,8 @@ void wxDeleteStockLists()
     wxDELETE(wxTheBrushList);
     wxDELETE(wxThePenList);
     wxDELETE(wxTheFontList);
+
+    // wxTheColourDatabase is cleaned up by wxAppBase::CleanUp()
 }
 
 // ============================================================================
@@ -730,7 +761,7 @@ wxGDIObjListBase::~wxGDIObjListBase()
 {
     for (wxList::compatibility_iterator node = list.GetFirst(); node; node = node->GetNext())
     {
-        delete wx_static_cast(wxObject*, node->GetData());
+        delete static_cast<wxObject*>(node->GetData());
     }
 }
 
@@ -749,7 +780,7 @@ wxPen *wxPenList::FindOrCreatePen (const wxColour& colour, int width, wxPenStyle
 
     wxPen* pen = NULL;
     wxPen penTmp(colour, width, style);
-    if (penTmp.Ok())
+    if (penTmp.IsOk())
     {
         pen = new wxPen(penTmp);
         list.Append(pen);
@@ -771,7 +802,7 @@ wxBrush *wxBrushList::FindOrCreateBrush (const wxColour& colour, wxBrushStyle st
 
     wxBrush* brush = NULL;
     wxBrush brushTmp(colour, style);
-    if (brushTmp.Ok())
+    if (brushTmp.IsOk())
     {
         brush = new wxBrush(brushTmp);
         list.Append(brush);
@@ -841,7 +872,7 @@ wxFont *wxFontList::FindOrCreateFont(int pointSize,
     // font not found, create the new one
     font = NULL;
     wxFont fontTmp(pointSize, family, style, weight, underline, facename, encoding);
-    if (fontTmp.Ok())
+    if (fontTmp.IsOk())
     {
         font = new wxFont(fontTmp);
         list.Append(font);
@@ -880,6 +911,15 @@ wxSize wxGetDisplaySizeMM()
     return wxSize(x, y);
 }
 
+wxSize wxGetDisplayPPI()
+{
+    const wxSize pixels = wxGetDisplaySize();
+    const wxSize mm = wxGetDisplaySizeMM();
+
+    return wxSize((int)((pixels.x * inches2mm) / mm.x),
+                  (int)((pixels.y * inches2mm) / mm.y));
+}
+
 wxResourceCache::~wxResourceCache ()
 {
     wxList::compatibility_iterator node = GetFirst ();