X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c45a644eda9a0c6309090d8450780ca37faed9c8..30d6c59b297f98ebda1d6c14e56f289bd3b02799:/samples/drawing/drawing.cpp

diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp
index 8ad6661781..d48e299dab 100644
--- a/samples/drawing/drawing.cpp
+++ b/samples/drawing/drawing.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        drawing.cpp
+// Name:        samples/drawing/drawing.cpp
 // Purpose:     shows and tests wxDC features
 // Author:      Robert Roebling
 // Modified by:
@@ -16,10 +16,6 @@
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
-#ifdef __GNUG__
-    #pragma implementation "drawing.cpp"
-    #pragma interface "drawing.cpp"
-#endif
 
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
@@ -29,21 +25,42 @@
 #endif
 
 // for all others, include the necessary headers (this file is usually all you
-// need because it includes almost all "standard" wxWindows headers
+// need because it includes almost all "standard" wxWidgets headers
 #ifndef WX_PRECOMP
     #include "wx/wx.h"
 #endif
 
 #include "wx/colordlg.h"
+#include "wx/image.h"
+#include "wx/artprov.h"
+#include "wx/dcgraph.h"
+#include "wx/overlay.h"
+#include "wx/graphics.h"
+#include "wx/filename.h"
+
+#define TEST_CAIRO_EVERYWHERE 0
 
 // ----------------------------------------------------------------------------
-// ressources
+// resources
 // ----------------------------------------------------------------------------
+
 // the application icon
-#if defined(__WXGTK__) || defined(__WXMOTIF__)
-    #include "mondrian.xpm"
+#if !defined(__WXMSW__) && !defined(__WXPM__)
+    #include "../sample.xpm"
 #endif
 
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+static wxBitmap *gs_bmpNoMask = NULL,
+                *gs_bmpWithColMask = NULL,
+                *gs_bmpMask = NULL,
+                *gs_bmpWithMask = NULL,
+                *gs_bmp4 = NULL,
+                *gs_bmp4_mono = NULL,
+                *gs_bmp36 = NULL;
+
 // ----------------------------------------------------------------------------
 // private classes
 // ----------------------------------------------------------------------------
@@ -59,6 +76,13 @@ public:
     // initialization (doing it here and not in the ctor allows to have an error
     // return: if OnInit() returns false, the application terminates)
     virtual bool OnInit();
+
+    virtual int OnExit() { DeleteBitmaps(); return 0; }
+
+protected:
+    void DeleteBitmaps();
+
+    bool LoadImages();
 };
 
 class MyCanvas;
@@ -73,14 +97,21 @@ public:
     // event handlers (these functions should _not_ be virtual)
     void OnQuit(wxCommandEvent& event);
     void OnAbout(wxCommandEvent& event);
+    void OnClip(wxCommandEvent& event);
+#if wxUSE_GRAPHICS_CONTEXT
+    void OnGraphicContext(wxCommandEvent& event);
+#endif
+    void OnShow(wxCommandEvent &event);
     void OnOption(wxCommandEvent &event);
-    void OnMouseMove(wxMouseEvent &event);
 
+#if wxUSE_COLOURDLG
     wxColour SelectColour();
+#endif // wxUSE_COLOURDLG
     void PrepareDC(wxDC& dc);
 
     int         m_backgroundMode;
-    int         m_mapMode;
+    int         m_textureBackground;
+    wxMappingMode m_mapMode;
     double      m_xUserScale;
     double      m_yUserScale;
     int         m_xLogicalOrigin;
@@ -93,7 +124,7 @@ public:
     MyCanvas   *m_canvas;
 
 private:
-    // any class wishing to process wxWindows events must use this macro
+    // any class wishing to process wxWidgets events must use this macro
     DECLARE_EVENT_TABLE()
 };
 
@@ -103,13 +134,59 @@ class MyCanvas: public wxScrolledWindow
 public:
     MyCanvas( MyFrame *parent );
 
-    void DrawTestLines( int x, int y, int width, wxDC &dc );    
     void OnPaint(wxPaintEvent &event);
-    
+    void OnMouseMove(wxMouseEvent &event);
+    void OnMouseDown(wxMouseEvent &event);
+    void OnMouseUp(wxMouseEvent &event);
+
+    void ToShow(int show) { m_show = show; Refresh(); }
+
+    // set or remove the clipping region
+    void Clip(bool clip) { m_clip = clip; Refresh(); }
+#if wxUSE_GRAPHICS_CONTEXT
+    void UseGraphicContext(bool use) { m_useContext = use; Refresh(); }
+#endif
+
 protected:
-    MyFrame *m_owner;
-    
+    enum DrawMode
+    {
+        Draw_Normal,
+        Draw_Stretch
+    };
+
+    void DrawTestLines( int x, int y, int width, wxDC &dc );
+    void DrawTestPoly(wxDC& dc);
+    void DrawTestBrushes(wxDC& dc);
+    void DrawText(wxDC& dc);
+    void DrawImages(wxDC& dc, DrawMode mode);
+    void DrawWithLogicalOps(wxDC& dc);
+#if wxUSE_GRAPHICS_CONTEXT
+    void DrawAlpha(wxDC& dc);
+    void DrawGraphics(wxGraphicsContext* gc);
+#endif
+    void DrawRegions(wxDC& dc);
+    void DrawCircles(wxDC& dc);
+    void DrawSplines(wxDC& dc);
+    void DrawDefault(wxDC& dc);
+    void DrawGradients(wxDC& dc);
+
+    void DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime);
+
 private:
+    MyFrame *m_owner;
+
+    int          m_show;
+    wxBitmap     m_smile_bmp;
+    wxIcon       m_std_icon;
+    bool         m_clip;
+    wxOverlay    m_overlay;
+    bool         m_rubberBand;
+    wxPoint      m_anchorpoint;
+    wxPoint      m_currentpoint;
+#if wxUSE_GRAPHICS_CONTEXT
+    bool         m_useContext ;
+#endif
+
     DECLARE_EVENT_TABLE()
 };
 
@@ -121,8 +198,32 @@ private:
 enum
 {
     // menu items
-    Minimal_Quit = 1,
-    Minimal_About,
+    File_Quit = wxID_EXIT,
+    File_About = wxID_ABOUT,
+
+    MenuShow_First = wxID_HIGHEST,
+    File_ShowDefault = MenuShow_First,
+    File_ShowText,
+    File_ShowLines,
+    File_ShowBrushes,
+    File_ShowPolygons,
+    File_ShowMask,
+    File_ShowMaskStretch,
+    File_ShowOps,
+    File_ShowRegions,
+    File_ShowCircles,
+    File_ShowSplines,
+#if wxUSE_GRAPHICS_CONTEXT
+    File_ShowAlpha,
+    File_ShowGraphics,
+#endif
+    File_ShowGradients,
+    MenuShow_Last = File_ShowGradients,
+
+    File_Clip,
+#if wxUSE_GRAPHICS_CONTEXT
+    File_GraphicContext,
+#endif
 
     MenuOption_First,
 
@@ -145,21 +246,26 @@ enum
     LogicalOrigin_MoveUp,
     LogicalOrigin_MoveLeft,
     LogicalOrigin_MoveRight,
+    LogicalOrigin_Set,
+    LogicalOrigin_Restore,
 
+#if wxUSE_COLOURDLG
     Colour_TextForeground,
     Colour_TextBackground,
     Colour_Background,
+#endif // wxUSE_COLOURDLG
     Colour_BackgroundMode,
+    Colour_TextureBackgound,
 
-    MenuOption_Last = Colour_BackgroundMode
+    MenuOption_Last = Colour_TextureBackgound
 };
 
 // ----------------------------------------------------------------------------
-// event tables and other macros for wxWindows
+// event tables and other macros for wxWidgets
 // ----------------------------------------------------------------------------
 
 
-// Create a new application object: this macro will allow wxWindows to create
+// Create a new application object: this macro will allow wxWidgets to create
 // the application object during program execution (it's better than using a
 // static object for many reasons) and also declares the accessor function
 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
@@ -174,90 +280,1212 @@ IMPLEMENT_APP(MyApp)
 // the application class
 // ----------------------------------------------------------------------------
 
+bool MyApp::LoadImages()
+{
+    gs_bmpNoMask = new wxBitmap;
+    gs_bmpWithColMask = new wxBitmap;
+    gs_bmpMask = new wxBitmap;
+    gs_bmpWithMask = new wxBitmap;
+    gs_bmp4 = new wxBitmap;
+    gs_bmp4_mono = new wxBitmap;
+    gs_bmp36 = new wxBitmap;
+
+    wxPathList pathList;
+    // special hack for Unix in-tree sample build, don't do this in real
+    // programs, use wxStandardPaths instead
+    pathList.Add(wxFileName(argv[0]).GetPath());
+    pathList.Add(wxT("."));
+    pathList.Add(wxT(".."));
+    pathList.Add(wxT("../.."));
+
+    wxString path = pathList.FindValidPath(wxT("pat4.bmp"));
+    if ( !path )
+        return false;
+
+    /* 4 colour bitmap */
+    gs_bmp4->LoadFile(path, wxBITMAP_TYPE_BMP);
+    /* turn into mono-bitmap */
+    gs_bmp4_mono->LoadFile(path, wxBITMAP_TYPE_BMP);
+    wxMask* mask4 = new wxMask(*gs_bmp4_mono, *wxBLACK);
+    gs_bmp4_mono->SetMask(mask4);
+
+    path = pathList.FindValidPath(wxT("pat36.bmp"));
+    if ( !path )
+        return false;
+    gs_bmp36->LoadFile(path, wxBITMAP_TYPE_BMP);
+    wxMask* mask36 = new wxMask(*gs_bmp36, *wxBLACK);
+    gs_bmp36->SetMask(mask36);
+
+    path = pathList.FindValidPath(wxT("image.bmp"));
+    if ( !path )
+        return false;
+    gs_bmpNoMask->LoadFile(path, wxBITMAP_TYPE_BMP);
+    gs_bmpWithMask->LoadFile(path, wxBITMAP_TYPE_BMP);
+    gs_bmpWithColMask->LoadFile(path, wxBITMAP_TYPE_BMP);
+
+    path = pathList.FindValidPath(wxT("mask.bmp"));
+    if ( !path )
+        return false;
+    gs_bmpMask->LoadFile(path, wxBITMAP_TYPE_BMP);
+
+    wxMask *mask = new wxMask(*gs_bmpMask, *wxBLACK);
+    gs_bmpWithMask->SetMask(mask);
+
+    mask = new wxMask(*gs_bmpWithColMask, *wxWHITE);
+    gs_bmpWithColMask->SetMask(mask);
+
+    return true;
+}
+
 // `Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
     // Create the main application window
-    MyFrame *frame = new MyFrame("Drawing sample",
-                                 wxPoint(50, 50), wxSize(550, 340));
+    MyFrame *frame = new MyFrame(wxT("Drawing sample"),
+                                 wxDefaultPosition, wxSize(550, 840));
 
     // Show it and tell the application that it's our main window
-    frame->Show(TRUE);
+    frame->Show(true);
     SetTopWindow(frame);
 
-    // success: wxApp::OnRun() will be called which will enter the main message
-    // loop and the application will run. If we returned FALSE here, the
-    // application would exit immediately.
-    return TRUE;
+    if ( !LoadImages() )
+    {
+        wxLogError(wxT("Can't load one of the bitmap files needed ")
+                   wxT("for this sample from the current or parent ")
+                   wxT("directory, please copy them there."));
+
+        // still continue, the sample can be used without images too if they're
+        // missing for whatever reason
+    }
+
+    return true;
+}
+
+void MyApp::DeleteBitmaps()
+{
+    wxDELETE(gs_bmpNoMask);
+    wxDELETE(gs_bmpWithColMask);
+    wxDELETE(gs_bmpMask);
+    wxDELETE(gs_bmpWithMask);
+    wxDELETE(gs_bmp4);
+    wxDELETE(gs_bmp4_mono);
+    wxDELETE(gs_bmp36);
 }
 
 // ----------------------------------------------------------------------------
 // MyCanvas
 // ----------------------------------------------------------------------------
 
-// the event tables connect the wxWindows events with the functions (event
+// the event tables connect the wxWidgets events with the functions (event
 // handlers) which process them.
 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
     EVT_PAINT  (MyCanvas::OnPaint)
+    EVT_MOTION (MyCanvas::OnMouseMove)
+    EVT_LEFT_DOWN (MyCanvas::OnMouseDown)
+    EVT_LEFT_UP (MyCanvas::OnMouseUp)
 END_EVENT_TABLE()
 
-MyCanvas::MyCanvas( MyFrame *parent )
-  : wxScrolledWindow( parent )
+#include "smile.xpm"
+
+MyCanvas::MyCanvas(MyFrame *parent)
+        : wxScrolledWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
+                           wxHSCROLL | wxVSCROLL | wxNO_FULL_REPAINT_ON_RESIZE)
 {
-  m_owner = parent;
+    m_owner = parent;
+    m_show = File_ShowDefault;
+    m_smile_bmp = wxBitmap(smile_xpm);
+    m_std_icon = wxArtProvider::GetIcon(wxART_INFORMATION);
+    m_clip = false;
+    m_rubberBand = false;
+#if wxUSE_GRAPHICS_CONTEXT
+    m_useContext = false;
+#endif
+}
+
+void MyCanvas::DrawTestBrushes(wxDC& dc)
+{
+    static const wxCoord WIDTH = 200;
+    static const wxCoord HEIGHT = 80;
+
+    wxCoord x = 10,
+            y = 10;
+
+    dc.SetBrush(wxBrush(*wxGREEN, wxSOLID));
+    dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+    dc.DrawText(wxT("Solid green"), x + 10, y + 10);
+
+    y += HEIGHT;
+    dc.SetBrush(wxBrush(*wxRED, wxCROSSDIAG_HATCH));
+    dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+    dc.DrawText(wxT("Hatched red"), x + 10, y + 10);
+
+    y += HEIGHT;
+    dc.SetBrush(wxBrush(*gs_bmpMask));
+    dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+    dc.DrawText(wxT("Stipple mono"), x + 10, y + 10);
+
+    y += HEIGHT;
+    dc.SetBrush(wxBrush(*gs_bmpNoMask));
+    dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+    dc.DrawText(wxT("Stipple colour"), x + 10, y + 10);
+}
+
+void MyCanvas::DrawTestPoly(wxDC& dc)
+{
+    wxBrush brushHatch(*wxRED, wxFDIAGONAL_HATCH);
+    dc.SetBrush(brushHatch);
+
+    wxPoint star[5];
+    star[0] = wxPoint(100, 60);
+    star[1] = wxPoint(60, 150);
+    star[2] = wxPoint(160, 100);
+    star[3] = wxPoint(40, 100);
+    star[4] = wxPoint(140, 150);
+
+    dc.DrawText(wxT("You should see two (irregular) stars below, the left one ")
+                wxT("hatched"), 10, 10);
+    dc.DrawText(wxT("except for the central region and the right ")
+                wxT("one entirely hatched"), 10, 30);
+    dc.DrawText(wxT("The third star only has a hatched outline"), 10, 50);
+
+    dc.DrawPolygon(WXSIZEOF(star), star, 0, 30);
+    dc.DrawPolygon(WXSIZEOF(star), star, 160, 30, wxWINDING_RULE);
+
+    wxPoint star2[10];
+    star2[0] = wxPoint(0, 100);
+    star2[1] = wxPoint(-59, -81);
+    star2[2] = wxPoint(95, 31);
+    star2[3] = wxPoint(-95, 31);
+    star2[4] = wxPoint(59, -81);
+    star2[5] = wxPoint(0, 80);
+    star2[6] = wxPoint(-47, -64);
+    star2[7] = wxPoint(76, 24);
+    star2[8] = wxPoint(-76, 24);
+    star2[9] = wxPoint(47, -64);
+    int count[2] = {5, 5};
+
+    dc.DrawPolyPolygon(WXSIZEOF(count), count, star2, 450, 150);
 }
 
 void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc )
 {
-    dc.SetPen( wxPen( "black", width, wxSOLID) );
+    dc.SetPen( wxPen( wxT("black"), width, wxSOLID) );
     dc.SetBrush( *wxRED_BRUSH );
-    dc.DrawRectangle( x+10, y+10, 400, 190 );
-    
-    dc.SetPen( wxPen( "black", width, wxSOLID) );
-    dc.DrawLine( x+20, y+20, 390, y+20 );
-    dc.SetPen( wxPen( "black", width, wxDOT) );
-    dc.DrawLine( x+20, y+30, 390, y+30 );
-    dc.SetPen( wxPen( "black", width, wxSHORT_DASH) );
-    dc.DrawLine( x+20, y+40, 390, y+40 );
-    dc.SetPen( wxPen( "black", width, wxLONG_DASH) );
-    dc.DrawLine( x+20, y+50, 390, y+50 );
-    dc.SetPen( wxPen( "black", width, wxDOT_DASH) );
-    dc.DrawLine( x+20, y+60, 390, y+60 );
-
-    dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) );
-    dc.DrawLine( x+20, y+70, 390, y+70 );
-    dc.SetPen( wxPen( "black", width, wxCROSSDIAG_HATCH) );
-    dc.DrawLine( x+20, y+80, 390, y+80 );
-    dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) );
-    dc.DrawLine( x+20, y+90, 390, y+90 );
-    dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) );
-    dc.DrawLine( x+20, y+100, 390, y+100 );
-    dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) );
-    dc.DrawLine( x+20, y+110, 390, y+110 );
-    dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) );
-    dc.DrawLine( x+20, y+120, 390, y+120 );
-
-    wxPen ud( "black", width, wxUSER_DASH );
-    wxDash dash1[1];
-    dash1[0] = 0;
-    ud.SetDashes( 1, dash1 );
-    dc.DrawLine( x+20, y+140, 390, y+140 );
-    dash1[0] = 1;
-    ud.SetDashes( 1, dash1 );
-    dc.DrawLine( x+20, y+150, 390, y+150 );
-    dash1[0] = 2;
-    ud.SetDashes( 1, dash1 );
-    dc.DrawLine( x+20, y+160, 390, y+160 );
-    dash1[0] = 0xFF;
-    ud.SetDashes( 1, dash1 );
-    dc.DrawLine( x+20, y+170, 390, y+170 );
+    dc.DrawText(wxString::Format(wxT("Testing lines of width %d"), width), x + 10, y - 10);
+    dc.DrawRectangle( x+10, y+10, 100, 190 );
+
+    dc.DrawText(wxT("Solid/dot/short dash/long dash/dot dash"), x + 150, y + 10);
+    dc.SetPen( wxPen( wxT("black"), width, wxSOLID) );
+    dc.DrawLine( x+20, y+20, 100, y+20 );
+    dc.SetPen( wxPen( wxT("black"), width, wxDOT) );
+    dc.DrawLine( x+20, y+30, 100, y+30 );
+    dc.SetPen( wxPen( wxT("black"), width, wxSHORT_DASH) );
+    dc.DrawLine( x+20, y+40, 100, y+40 );
+    dc.SetPen( wxPen( wxT("black"), width, wxLONG_DASH) );
+    dc.DrawLine( x+20, y+50, 100, y+50 );
+    dc.SetPen( wxPen( wxT("black"), width, wxDOT_DASH) );
+    dc.DrawLine( x+20, y+60, 100, y+60 );
+
+    dc.DrawText(wxT("Misc hatches"), x + 150, y + 70);
+    dc.SetPen( wxPen( wxT("black"), width, wxBDIAGONAL_HATCH) );
+    dc.DrawLine( x+20, y+70, 100, y+70 );
+    dc.SetPen( wxPen( wxT("black"), width, wxCROSSDIAG_HATCH) );
+    dc.DrawLine( x+20, y+80, 100, y+80 );
+    dc.SetPen( wxPen( wxT("black"), width, wxFDIAGONAL_HATCH) );
+    dc.DrawLine( x+20, y+90, 100, y+90 );
+    dc.SetPen( wxPen( wxT("black"), width, wxCROSS_HATCH) );
+    dc.DrawLine( x+20, y+100, 100, y+100 );
+    dc.SetPen( wxPen( wxT("black"), width, wxHORIZONTAL_HATCH) );
+    dc.DrawLine( x+20, y+110, 100, y+110 );
+    dc.SetPen( wxPen( wxT("black"), width, wxVERTICAL_HATCH) );
+    dc.DrawLine( x+20, y+120, 100, y+120 );
+
+    dc.DrawText(wxT("User dash"), x + 150, y + 140);
+    wxPen ud( wxT("black"), width, wxUSER_DASH );
+    wxDash dash1[6];
+    dash1[0] = 8;  // Long dash  <---------+
+    dash1[1] = 2;  // Short gap            |
+    dash1[2] = 3;  // Short dash           |
+    dash1[3] = 2;  // Short gap            |
+    dash1[4] = 3;  // Short dash           |
+    dash1[5] = 2;  // Short gap and repeat +
+    ud.SetDashes( 6, dash1 );
+    dc.SetPen( ud );
+    dc.DrawLine( x+20, y+140, 100, y+140 );
+    dash1[0] = 5;  // Make first dash shorter
+    ud.SetDashes( 6, dash1 );
+    dc.SetPen( ud );
+    dc.DrawLine( x+20, y+150, 100, y+150 );
+    dash1[2] = 5;  // Make second dash longer
+    ud.SetDashes( 6, dash1 );
+    dc.SetPen( ud );
+    dc.DrawLine( x+20, y+160, 100, y+160 );
+    dash1[4] = 5;  // Make third dash longer
+    ud.SetDashes( 6, dash1 );
+    dc.SetPen( ud );
+    dc.DrawLine( x+20, y+170, 100, y+170 );
+}
 
+void MyCanvas::DrawDefault(wxDC& dc)
+{
+    // mark the origin
+    dc.DrawCircle(0, 0, 10);
+
+#if !defined(wxMAC_USE_CORE_GRAPHICS) || !wxMAC_USE_CORE_GRAPHICS
+    // GetPixel and FloodFill not supported by Mac OS X CoreGraphics
+    // (FloodFill uses Blit from a non-wxMemoryDC)
+    //flood fill using brush, starting at 1,1 and replacing whatever colour we find there
+    dc.SetBrush(wxBrush(wxColour(128,128,0), wxSOLID));
+
+    wxColour tmpColour ;
+    dc.GetPixel(1,1, &tmpColour);
+    dc.FloodFill(1,1, tmpColour, wxFLOOD_SURFACE);
+#endif
+
+    dc.DrawCheckMark(5, 80, 15, 15);
+    dc.DrawCheckMark(25, 80, 30, 30);
+    dc.DrawCheckMark(60, 80, 60, 60);
+
+    // this is the test for "blitting bitmap into DC damages selected brush" bug
+    wxCoord rectSize = m_std_icon.GetWidth() + 10;
+    wxCoord x = 100;
+    dc.SetPen(*wxTRANSPARENT_PEN);
+    dc.SetBrush( *wxGREEN_BRUSH );
+    dc.DrawRectangle(x, 10, rectSize, rectSize);
+    dc.DrawBitmap(m_std_icon, x + 5, 15, true);
+    x += rectSize + 10;
+    dc.DrawRectangle(x, 10, rectSize, rectSize);
+    dc.DrawIcon(m_std_icon, x + 5, 15);
+    x += rectSize + 10;
+    dc.DrawRectangle(x, 10, rectSize, rectSize);
+
+    // test for "transparent" bitmap drawing (it intersects with the last
+    // rectangle above)
+    //dc.SetBrush( *wxTRANSPARENT_BRUSH );
+
+    if (m_smile_bmp.Ok())
+        dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, true);
+
+    dc.SetBrush( *wxBLACK_BRUSH );
+    dc.DrawRectangle( 0, 160, 1000, 300 );
+
+    // draw lines
+    wxBitmap bitmap(20,70);
+    wxMemoryDC memdc;
+    memdc.SelectObject( bitmap );
+    memdc.SetBrush( *wxBLACK_BRUSH );
+    memdc.SetPen( *wxWHITE_PEN );
+    memdc.DrawRectangle(0,0,20,70);
+    memdc.DrawLine( 10,0,10,70 );
+
+    // to the right
+    wxPen pen = *wxRED_PEN;
+    memdc.SetPen(pen);
+    memdc.DrawLine( 10, 5,10, 5 );
+    memdc.DrawLine( 10,10,11,10 );
+    memdc.DrawLine( 10,15,12,15 );
+    memdc.DrawLine( 10,20,13,20 );
+
+/*
+    memdc.SetPen(*wxRED_PEN);
+    memdc.DrawLine( 12, 5,12, 5 );
+    memdc.DrawLine( 12,10,13,10 );
+    memdc.DrawLine( 12,15,14,15 );
+    memdc.DrawLine( 12,20,15,20 );
+*/
+
+    // same to the left
+    memdc.DrawLine( 10,25,10,25 );
+    memdc.DrawLine( 10,30, 9,30 );
+    memdc.DrawLine( 10,35, 8,35 );
+    memdc.DrawLine( 10,40, 7,40 );
+
+    // XOR draw lines
+    dc.SetPen(*wxWHITE_PEN);
+    memdc.SetLogicalFunction( wxINVERT );
+    memdc.SetPen( *wxWHITE_PEN );
+    memdc.DrawLine( 10,50,10,50 );
+    memdc.DrawLine( 10,55,11,55 );
+    memdc.DrawLine( 10,60,12,60 );
+    memdc.DrawLine( 10,65,13,65 );
+
+    memdc.DrawLine( 12,50,12,50 );
+    memdc.DrawLine( 12,55,13,55 );
+    memdc.DrawLine( 12,60,14,60 );
+    memdc.DrawLine( 12,65,15,65 );
+
+    memdc.SelectObject( wxNullBitmap );
+    dc.DrawBitmap( bitmap, 10, 170 );
+    wxImage image = bitmap.ConvertToImage();
+    image.Rescale( 60,210 );
+    bitmap = wxBitmap(image);
+    dc.DrawBitmap( bitmap, 50, 170 );
+
+    // test the rectangle outline drawing - there should be one pixel between
+    // the rect and the lines
+    dc.SetPen(*wxWHITE_PEN);
+    dc.SetBrush( *wxTRANSPARENT_BRUSH );
+    dc.DrawRectangle(150, 170, 49, 29);
+    dc.DrawRectangle(200, 170, 49, 29);
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(250, 210, 250, 170);
+    dc.DrawLine(260, 200, 150, 200);
+
+    // test the rectangle filled drawing - there should be one pixel between
+    // the rect and the lines
+    dc.SetPen(*wxTRANSPARENT_PEN);
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle(300, 170, 49, 29);
+    dc.DrawRectangle(350, 170, 49, 29);
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(400, 170, 400, 210);
+    dc.DrawLine(300, 200, 410, 200);
+
+    // a few more tests of this kind
+    dc.SetPen(*wxRED_PEN);
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle(300, 220, 1, 1);
+    dc.DrawRectangle(310, 220, 2, 2);
+    dc.DrawRectangle(320, 220, 3, 3);
+    dc.DrawRectangle(330, 220, 4, 4);
+
+    dc.SetPen(*wxTRANSPARENT_PEN);
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle(300, 230, 1, 1);
+    dc.DrawRectangle(310, 230, 2, 2);
+    dc.DrawRectangle(320, 230, 3, 3);
+    dc.DrawRectangle(330, 230, 4, 4);
+
+    // and now for filled rect with outline
+    dc.SetPen(*wxRED_PEN);
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle(500, 170, 49, 29);
+    dc.DrawRectangle(550, 170, 49, 29);
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(600, 170, 600, 210);
+    dc.DrawLine(500, 200, 610, 200);
+
+    // test the rectangle outline drawing - there should be one pixel between
+    // the rect and the lines
+    dc.SetPen(*wxWHITE_PEN);
+    dc.SetBrush( *wxTRANSPARENT_BRUSH );
+    dc.DrawRoundedRectangle(150, 270, 49, 29, 6);
+    dc.DrawRoundedRectangle(200, 270, 49, 29, 6);
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(250, 270, 250, 310);
+    dc.DrawLine(150, 300, 260, 300);
+
+    // test the rectangle filled drawing - there should be one pixel between
+    // the rect and the lines
+    dc.SetPen(*wxTRANSPARENT_PEN);
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRoundedRectangle(300, 270, 49, 29, 6);
+    dc.DrawRoundedRectangle(350, 270, 49, 29, 6);
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(400, 270, 400, 310);
+    dc.DrawLine(300, 300, 410, 300);
+
+    // Added by JACS to demonstrate bizarre behaviour.
+    // With a size of 70, we get a missing red RHS,
+    // and the height is too small, so we get yellow
+    // showing. With a size of 40, it draws as expected:
+    // it just shows a white rectangle with red outline.
+    int totalWidth = 70;
+    int totalHeight = 70;
+    wxBitmap bitmap2(totalWidth, totalHeight);
+
+    wxMemoryDC memdc2;
+    memdc2.SelectObject(bitmap2);
+
+    wxColour clr(255, 255, 0);
+    wxBrush yellowBrush(clr, wxSOLID);
+    memdc2.SetBackground(yellowBrush);
+    memdc2.Clear();
+
+    wxPen yellowPen(clr, 1, wxSOLID);
+
+    // Now draw a white rectangle with red outline. It should
+    // entirely eclipse the yellow background.
+    memdc2.SetPen(*wxRED_PEN);
+    memdc2.SetBrush(*wxWHITE_BRUSH);
+
+    memdc2.DrawRectangle(0, 0, totalWidth, totalHeight);
+
+    memdc2.SetPen(wxNullPen);
+    memdc2.SetBrush(wxNullBrush);
+    memdc2.SelectObject(wxNullBitmap);
+
+    dc.DrawBitmap(bitmap2, 500, 270);
+
+    // Repeat, but draw directly on dc
+    // Draw a yellow rectangle filling the bitmap
+
+    x = 600; int y = 270;
+    dc.SetPen(yellowPen);
+    dc.SetBrush(yellowBrush);
+    dc.DrawRectangle(x, y, totalWidth, totalHeight);
+
+    // Now draw a white rectangle with red outline. It should
+    // entirely eclipse the yellow background.
+    dc.SetPen(*wxRED_PEN);
+    dc.SetBrush(*wxWHITE_BRUSH);
+
+    dc.DrawRectangle(x, y, totalWidth, totalHeight);
 }
 
+void MyCanvas::DrawText(wxDC& dc)
+{
+    // set underlined font for testing
+    dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, true) );
+    dc.DrawText( wxT("This is text"), 110, 10 );
+    dc.DrawRotatedText( wxT("That is text"), 20, 10, -45 );
+
+    // use wxSWISS_FONT and not wxNORMAL_FONT as the latter can't be rotated
+    // under Win9x (it is not TrueType)
+    dc.SetFont( *wxSWISS_FONT );
+
+    wxString text;
+    dc.SetBackgroundMode(wxTRANSPARENT);
+
+    for ( int n = -180; n < 180; n += 30 )
+    {
+        text.Printf(wxT("     %d rotated text"), n);
+        dc.DrawRotatedText(text , 400, 400, n);
+    }
+
+    dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) );
+
+    dc.DrawText( wxT("This is Swiss 18pt text."), 110, 40 );
+
+    wxCoord length;
+    wxCoord height;
+    wxCoord descent;
+    dc.GetTextExtent( wxT("This is Swiss 18pt text."), &length, &height, &descent );
+    text.Printf( wxT("Dimensions are length %d, height %d, descent %d"), length, height, descent );
+    dc.DrawText( text, 110, 80 );
+
+    text.Printf( wxT("CharHeight() returns: %d"), dc.GetCharHeight() );
+    dc.DrawText( text, 110, 120 );
+
+    dc.DrawRectangle( 100, 40, 4, height );
+
+    // test the logical function effect
+    wxCoord y = 150;
+    dc.SetLogicalFunction(wxINVERT);
+    // text drawing should ignore logical function
+    dc.DrawText( wxT("There should be a text below"), 110, 150 );
+    dc.DrawRectangle( 110, y, 100, height );
+
+    y += height;
+    dc.DrawText( wxT("Visible text"), 110, y );
+    dc.DrawRectangle( 110, y, 100, height );
+    dc.DrawText( wxT("Visible text"), 110, y );
+    dc.DrawRectangle( 110, y, 100, height );
+    dc.SetLogicalFunction(wxCOPY);
+
+    y += height;
+    dc.DrawRectangle( 110, y, 100, height );
+    dc.DrawText( wxT("Another visible text"), 110, y );
+
+    y += height;
+    dc.DrawText("And\nmore\ntext on\nmultiple\nlines", 110, y);
+}
+
+static const struct
+{
+    const wxChar *name;
+    wxRasterOperationMode rop;
+} rasterOperations[] =
+{
+    { wxT("wxAND"),          wxAND           },
+    { wxT("wxAND_INVERT"),   wxAND_INVERT    },
+    { wxT("wxAND_REVERSE"),  wxAND_REVERSE   },
+    { wxT("wxCLEAR"),        wxCLEAR         },
+    { wxT("wxCOPY"),         wxCOPY          },
+    { wxT("wxEQUIV"),        wxEQUIV         },
+    { wxT("wxINVERT"),       wxINVERT        },
+    { wxT("wxNAND"),         wxNAND          },
+    { wxT("wxNO_OP"),        wxNO_OP         },
+    { wxT("wxOR"),           wxOR            },
+    { wxT("wxOR_INVERT"),    wxOR_INVERT     },
+    { wxT("wxOR_REVERSE"),   wxOR_REVERSE    },
+    { wxT("wxSET"),          wxSET           },
+    { wxT("wxSRC_INVERT"),   wxSRC_INVERT    },
+    { wxT("wxXOR"),          wxXOR           },
+};
+
+void MyCanvas::DrawImages(wxDC& dc, DrawMode mode)
+{
+    dc.DrawText(wxT("original image"), 0, 0);
+    dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0);
+    dc.DrawText(wxT("with colour mask"), 0, 100);
+    dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, true);
+    dc.DrawText(wxT("the mask image"), 0, 200);
+    dc.DrawBitmap(*gs_bmpMask, 0, 220, 0);
+    dc.DrawText(wxT("masked image"), 0, 300);
+    dc.DrawBitmap(*gs_bmpWithMask, 0, 320, true);
+
+    int cx = gs_bmpWithColMask->GetWidth(),
+        cy = gs_bmpWithColMask->GetHeight();
+
+    wxMemoryDC memDC;
+    for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ )
+    {
+        wxCoord x = 120 + 150*(n%4),
+                y =  20 + 100*(n/4);
+
+        dc.DrawText(rasterOperations[n].name, x, y - 20);
+        memDC.SelectObject(*gs_bmpWithColMask);
+        if ( mode == Draw_Stretch )
+        {
+            dc.StretchBlit(x, y, cx, cy, &memDC, 0, 0, cx/2, cy/2,
+                           rasterOperations[n].rop, true);
+        }
+        else
+        {
+            dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, true);
+        }
+    }
+}
+
+void MyCanvas::DrawWithLogicalOps(wxDC& dc)
+{
+    static const wxCoord w = 60;
+    static const wxCoord h = 60;
+
+    // reuse the text colour here
+    dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID));
+    dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+    size_t n;
+    for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
+    {
+        wxCoord x = 20 + 150*(n%4),
+                y = 20 + 100*(n/4);
+
+        dc.DrawText(rasterOperations[n].name, x, y - 20);
+        dc.SetLogicalFunction(rasterOperations[n].rop);
+        dc.DrawRectangle(x, y, w, h);
+        dc.DrawLine(x, y, x + w, y + h);
+        dc.DrawLine(x + w, y, x, y + h);
+    }
+
+    // now some filled rectangles
+    dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID));
+
+    for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
+    {
+        wxCoord x = 20 + 150*(n%4),
+                y = 500 + 100*(n/4);
+
+        dc.DrawText(rasterOperations[n].name, x, y - 20);
+        dc.SetLogicalFunction(rasterOperations[n].rop);
+        dc.DrawRectangle(x, y, w, h);
+    }
+}
+
+#if wxUSE_GRAPHICS_CONTEXT
+#ifdef __WXGTK20__
+void MyCanvas::DrawAlpha(wxDC& WXUNUSED(dummyDC))
+#else
+void MyCanvas::DrawAlpha(wxDC& dc)
+#endif
+{
+#ifdef __WXGTK__
+    wxGCDC dc( this );
+    PrepareDC( dc );
+#endif
+
+    wxDouble margin = 20 ;
+    wxDouble width = 180 ;
+    wxDouble radius = 30 ;
+
+    dc.SetPen( wxPen( wxColour( 128, 0, 0, 255 ),12, wxSOLID));
+    dc.SetBrush( wxBrush( wxColour( 255, 0, 0, 255),wxSOLID));
+
+    wxRect r(margin,margin+width*0.66,width,width) ;
+
+    dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
+
+    dc.SetPen( wxPen( wxColour( 0, 0, 128, 255 ),12, wxSOLID));
+    dc.SetBrush( wxBrush( wxColour( 0, 0, 255, 255),wxSOLID));
+
+    r.Offset( width * 0.8 , - width * 0.66 ) ;
+
+    dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
+
+    dc.SetPen( wxPen( wxColour( 128, 128, 0, 255 ),12, wxSOLID));
+    dc.SetBrush( wxBrush( wxColour( 192, 192, 0, 255),wxSOLID));
+
+    r.Offset( width * 0.8 , width *0.5 ) ;
+
+    dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
+
+    dc.SetPen( *wxTRANSPARENT_PEN ) ;
+    dc.SetBrush( wxBrush( wxColour(255,255,128,128) ) );
+    dc.DrawRoundedRectangle( 0 , margin + width / 2 , width * 3 , 100 , radius) ;
+
+    dc.SetTextForeground( wxColour(255,255,0,128) );
+    dc.SetFont( wxFont( 40, wxFONTFAMILY_SWISS, wxFONTSTYLE_ITALIC, wxFONTWEIGHT_NORMAL ) );
+    dc.DrawText( wxT("Hello!"), 120, 80 );
+}
+
+#endif
+
+#if wxUSE_GRAPHICS_CONTEXT
+
+const int BASE  = 80.0;
+const int BASE2 = BASE/2;
+const int BASE4 = BASE/4;
+
+static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
+
+
+// modeled along Robin Dunn's GraphicsContext.py sample
+
+void MyCanvas::DrawGraphics(wxGraphicsContext* gc)
+{
+    wxFont font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
+    gc->SetFont(font,*wxBLACK);
+
+    // make a path that contains a circle and some lines, centered at 0,0
+    wxGraphicsPath path = gc->CreatePath() ;
+    path.AddCircle( 0, 0, BASE2 );
+    path.MoveToPoint(0, -BASE2);
+    path.AddLineToPoint(0, BASE2);
+    path.MoveToPoint(-BASE2, 0);
+    path.AddLineToPoint(BASE2, 0);
+    path.CloseSubpath();
+    path.AddRectangle(-BASE4, -BASE4/2, BASE2, BASE4);
+
+    // Now use that path to demonstrate various capbilites of the grpahics context
+    gc->PushState(); // save current translation/scale/other state
+    gc->Translate(60, 75); // reposition the context origin
+
+    gc->SetPen(wxPen("navy", 1));
+    gc->SetBrush(wxBrush("pink"));
+
+    for( int i = 0 ; i < 3 ; ++i )
+    {
+        wxString label;
+        switch( i )
+        {
+            case 0 :
+                label = "StrokePath";
+                break;
+            case 1 :
+                label = "FillPath";
+                break;
+            case 2 :
+                label = "DrawPath";
+                break;
+        }
+        wxDouble w, h;
+        gc->GetTextExtent(label, &w, &h, NULL, NULL);
+        gc->DrawText(label, -w/2, -BASE2-h-4);
+        switch( i )
+        {
+            case 0 :
+                gc->StrokePath(path);
+                break;
+            case 1 :
+                gc->FillPath(path);
+                break;
+            case 2 :
+                gc->DrawPath(path);
+                break;
+        }
+        gc->Translate(2*BASE, 0);
+    }
+
+    gc->PopState(); // restore saved state
+    gc->PushState(); // save it again
+    gc->Translate(60, 200); // offset to the lower part of the window
+
+    gc->DrawText("Scale", 0, -BASE2);
+    gc->Translate(0, 20);
+
+    gc->SetBrush(wxBrush(wxColour(178,  34,  34, 128)));// 128 == half transparent
+    for( int i = 0 ; i < 8 ; ++i )
+    {
+        gc->Scale(1.08, 1.08); // increase scale by 8%
+        gc->Translate(5,5);
+        gc->DrawPath(path);
+    }
+
+    gc->PopState(); // restore saved state
+    gc->PushState(); // save it again
+    gc->Translate(400, 200);
+
+    gc->DrawText("Rotate", 0, -BASE2);
+
+    // Move the origin over to the next location
+    gc->Translate(0, 75);
+
+    // draw our path again, rotating it about the central point,
+    // and changing colors as we go
+    for ( int angle = 0 ; angle < 360 ; angle += 30 )
+    {
+        gc->PushState(); // save this new current state so we can
+        //  pop back to it at the end of the loop
+        wxImage::RGBValue val = wxImage::HSVtoRGB(wxImage::HSVValue(float(angle)/360, 1, 1));
+        gc->SetBrush(wxBrush(wxColour(val.red, val.green, val.blue, 64)));
+        gc->SetPen(wxPen(wxColour(val.red, val.green, val.blue, 128)));
+
+        // use translate to artfully reposition each drawn path
+        gc->Translate(1.5 * BASE2 * cos(DegToRad(angle)),
+                     1.5 * BASE2 * sin(DegToRad(angle)));
+
+        // use Rotate to rotate the path
+        gc->Rotate(DegToRad(angle));
+
+        // now draw it
+        gc->DrawPath(path);
+        gc->PopState();
+    }
+    gc->PopState();
+
+    gc->PushState();
+    gc->Translate(60, 400);
+    gc->DrawText("Scaled smiley inside a square", 0, 0);
+    gc->DrawRectangle(BASE2, BASE2, 100, 100);
+    gc->DrawBitmap(m_smile_bmp, BASE2, BASE2, 100, 100);
+    gc->PopState();
+}
+#endif // wxUSE_GRAPHICS_CONTEXT
+
+void MyCanvas::DrawCircles(wxDC& dc)
+{
+    int x = 100,
+        y = 100,
+        r = 20;
+
+    dc.SetPen( *wxRED_PEN );
+    dc.SetBrush( *wxGREEN_BRUSH );
+
+    dc.DrawText(wxT("Some circles"), 0, y);
+    dc.DrawCircle(x, y, r);
+    dc.DrawCircle(x + 2*r, y, r);
+    dc.DrawCircle(x + 4*r, y, r);
+
+    y += 2*r;
+    dc.DrawText(wxT("And ellipses"), 0, y);
+    dc.DrawEllipse(x - r, y, 2*r, r);
+    dc.DrawEllipse(x + r, y, 2*r, r);
+    dc.DrawEllipse(x + 3*r, y, 2*r, r);
+
+    y += 2*r;
+    dc.DrawText(wxT("And arcs"), 0, y);
+    dc.DrawArc(x - r, y, x + r, y, x, y);
+    dc.DrawArc(x + 4*r, y, x + 2*r, y, x + 3*r, y);
+    dc.DrawArc(x + 5*r, y, x + 5*r, y, x + 6*r, y);
+
+    y += 2*r;
+    dc.DrawEllipticArc(x - r, y, 2*r, r, 0, 90);
+    dc.DrawEllipticArc(x + r, y, 2*r, r, 90, 180);
+    dc.DrawEllipticArc(x + 3*r, y, 2*r, r, 180, 270);
+    dc.DrawEllipticArc(x + 5*r, y, 2*r, r, 270, 360);
+
+    // same as above, just transparent brush
+
+    dc.SetPen( *wxRED_PEN );
+    dc.SetBrush( *wxTRANSPARENT_BRUSH );
+
+    y += 2*r;
+    dc.DrawText(wxT("Some circles"), 0, y);
+    dc.DrawCircle(x, y, r);
+    dc.DrawCircle(x + 2*r, y, r);
+    dc.DrawCircle(x + 4*r, y, r);
+
+    y += 2*r;
+    dc.DrawText(wxT("And ellipses"), 0, y);
+    dc.DrawEllipse(x - r, y, 2*r, r);
+    dc.DrawEllipse(x + r, y, 2*r, r);
+    dc.DrawEllipse(x + 3*r, y, 2*r, r);
+
+    y += 2*r;
+    dc.DrawText(wxT("And arcs"), 0, y);
+    dc.DrawArc(x - r, y, x + r, y, x, y);
+    dc.DrawArc(x + 4*r, y, x + 2*r, y, x + 3*r, y);
+    dc.DrawArc(x + 5*r, y, x + 5*r, y, x + 6*r, y);
+
+    y += 2*r;
+    dc.DrawEllipticArc(x - r, y, 2*r, r, 0, 90);
+    dc.DrawEllipticArc(x + r, y, 2*r, r, 90, 180);
+    dc.DrawEllipticArc(x + 3*r, y, 2*r, r, 180, 270);
+    dc.DrawEllipticArc(x + 5*r, y, 2*r, r, 270, 360);
+
+}
+
+void MyCanvas::DrawSplines(wxDC& dc)
+{
+#if wxUSE_SPLINES
+    dc.DrawText(wxT("Some splines"), 10, 5);
+
+    // values are hardcoded rather than randomly generated
+    // so the output can be compared between native
+    // implementations on platforms with different random
+    // generators
+
+    const int R = 300;
+    const wxPoint center( R + 20, R + 20 );
+    const int angles[7] = { 0, 10, 33, 77, 13, 145, 90 };
+    const int radii[5] = { 100 , 59, 85, 33, 90 };
+    const int n = 200;
+    wxPoint pts[n];
+
+    // background spline calculation
+    unsigned int radius_pos = 0;
+    unsigned int angle_pos = 0;
+    int angle = 0;
+    for ( int i = 0; i < n; i++ )
+    {
+        angle += angles[ angle_pos ];
+        int r = R * radii[ radius_pos ] / 100;
+        pts[ i ].x = center.x + (wxCoord)( r * cos( M_PI * angle / 180.0) );
+        pts[ i ].y = center.y + (wxCoord)( r * sin( M_PI * angle / 180.0) );
+
+        angle_pos++;
+        if ( angle_pos >= WXSIZEOF(angles) ) angle_pos = 0;
+
+        radius_pos++;
+        if ( radius_pos >= WXSIZEOF(radii) ) radius_pos = 0;
+    }
+
+    // background spline drawing
+    dc.SetPen(*wxRED_PEN);
+    dc.DrawSpline(WXSIZEOF(pts), pts);
+
+    // less detailed spline calculation
+    wxPoint letters[4][5];
+    // w
+    letters[0][0] = wxPoint( 0,1); //  O           O
+    letters[0][1] = wxPoint( 1,3); //   *         *
+    letters[0][2] = wxPoint( 2,2); //    *   O   *
+    letters[0][3] = wxPoint( 3,3); //     * * * *
+    letters[0][4] = wxPoint( 4,1); //      O   O
+    // x1
+    letters[1][0] = wxPoint( 5,1); //  O*O
+    letters[1][1] = wxPoint( 6,1); //     *
+    letters[1][2] = wxPoint( 7,2); //      O
+    letters[1][3] = wxPoint( 8,3); //       *
+    letters[1][4] = wxPoint( 9,3); //        O*O
+    // x2
+    letters[2][0] = wxPoint( 5,3); //        O*O
+    letters[2][1] = wxPoint( 6,3); //       *
+    letters[2][2] = wxPoint( 7,2); //      O
+    letters[2][3] = wxPoint( 8,1); //     *
+    letters[2][4] = wxPoint( 9,1); //  O*O
+    // W
+    letters[3][0] = wxPoint(10,0); //  O           O
+    letters[3][1] = wxPoint(11,3); //   *         *
+    letters[3][2] = wxPoint(12,1); //    *   O   *
+    letters[3][3] = wxPoint(13,3); //     * * * *
+    letters[3][4] = wxPoint(14,0); //      O   O
+
+    const int dx = 2 * R / letters[3][4].x;
+    const int h[4] = { -R/2, 0, R/4, R/2 };
+
+    for ( int m = 0; m < 4; m++ )
+    {
+        for ( int n = 0; n < 5; n++ )
+        {
+            letters[m][n].x = center.x - R + letters[m][n].x * dx;
+            letters[m][n].y = center.y + h[ letters[m][n].y ];
+        }
+
+        dc.SetPen( wxPen( wxT("blue"), 1, wxDOT) );
+        dc.DrawLines(5, letters[m]);
+        dc.SetPen( wxPen( wxT("black"), 4, wxSOLID) );
+        dc.DrawSpline(5, letters[m]);
+    }
+
+#else
+    dc.DrawText(wxT("Splines not supported."), 10, 5);
+#endif
+}
+
+void MyCanvas::DrawGradients(wxDC& dc)
+{
+    static const int TEXT_HEIGHT = 15;
+
+    // LHS: linear
+    wxRect r(10, 10, 50, 50);
+    dc.DrawText(wxT("wxRIGHT"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxRIGHT);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(wxT("wxLEFT"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxLEFT);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(wxT("wxDOWN"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxDOWN);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(wxT("wxUP"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxUP);
+
+    wxRect  gfr = wxRect(r);
+
+    // RHS: concentric
+    r = wxRect(200, 10, 50, 50);
+    dc.DrawText(wxT("Blue inside"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(wxT("White inside"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillConcentric(r, *wxWHITE, *wxBLUE);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(wxT("Blue in top left corner"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(0, 0));
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(wxT("Blue in bottom right corner"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(r.width, r.height));
+
+    // check that the area filled by the gradient is exactly the interior of
+    // the rectangle
+    r.x = 350;
+    r.y = 30;
+    dc.DrawText("The interior should be filled but", r.x, r.y);
+    r.y += 15;
+    dc.DrawText(" the red border should remain visible:", r.x, r.y);
+    r.y += 15;
+
+    r.width =
+    r.height = 50;
+    wxRect r2 = r;
+    r2.x += 60;
+    wxRect r3 = r;
+    r3.y += 60;
+    wxRect r4 = r2;
+    r4.y += 60;
+    dc.SetPen(wxPen(wxColour(255, 0, 0)));
+    dc.DrawRectangle(r);
+    r.Deflate(1);
+    dc.GradientFillLinear(r, wxColour(0,255,0), wxColour(0,0,0), wxNORTH);
+    dc.DrawRectangle(r2);
+    r2.Deflate(1);
+    dc.GradientFillLinear(r2, wxColour(0,0,0), wxColour(0,255,0), wxSOUTH);
+    dc.DrawRectangle(r3);
+    r3.Deflate(1);
+    dc.GradientFillLinear(r3, wxColour(0,255,0), wxColour(0,0,0), wxEAST);
+    dc.DrawRectangle(r4);
+    r4.Deflate(1);
+    dc.GradientFillLinear(r4, wxColour(0,0,0), wxColour(0,255,0), wxWEST);
+
+#if wxUSE_GRAPHICS_CONTEXT
+    if (m_useContext)
+    {
+        wxGCDC                      &gdc = (wxGCDC&)dc;
+        wxGraphicsContext           *gc = gdc.GetGraphicsContext();
+        wxGraphicsPath              pth;
+        wxGraphicsGradientStops     stops;
+
+        gfr.Offset(0, gfr.height + 10);
+        dc.DrawText(wxT("Linear Gradient with Stops"), gfr.x, gfr.y);
+        gfr.Offset(0, TEXT_HEIGHT);
+
+        stops = wxGraphicsGradientStops(wxColour(255,0,0), wxColour(0,0,255));
+        stops.Add(wxColour(255,255,0), 0.33f);
+        stops.Add(wxColour(0,255,0), 0.67f);
+
+        gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y,
+                                                   gfr.x + gfr.width, gfr.y + gfr.height,
+                                                   stops));
+        pth = gc->CreatePath();
+        pth.MoveToPoint(gfr.x,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+        pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+        pth.CloseSubpath();
+        gc->FillPath(pth);
+
+        gfr.Offset(0, gfr.height + 10);
+        dc.DrawText(wxT("Radial Gradient with Stops"), gfr.x, gfr.y);
+        gfr.Offset(0, TEXT_HEIGHT);
+
+        gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2,
+                                                   gfr.y + gfr.height / 2,
+                                                   gfr.x + gfr.width / 2,
+                                                   gfr.y + gfr.height / 2,
+                                                   gfr.width / 2,
+                                                   stops));
+        pth = gc->CreatePath();
+        pth.MoveToPoint(gfr.x,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+        pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+        pth.CloseSubpath();
+        gc->FillPath(pth);
+
+        gfr.Offset(0, gfr.height + 10);
+        dc.DrawText(wxT("Linear Gradient with Stops and Gaps"), gfr.x, gfr.y);
+        gfr.Offset(0, TEXT_HEIGHT);
+
+        stops = wxGraphicsGradientStops(wxColour(255,0,0), wxColour(0,0,255));
+        stops.Add(wxColour(255,255,0), 0.33f);
+        stops.Add(wxTransparentColour, 0.33f);
+        stops.Add(wxTransparentColour, 0.67f);
+        stops.Add(wxColour(0,255,0), 0.67f);
+
+        gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y + gfr.height,
+                                                   gfr.x + gfr.width, gfr.y,
+                                                   stops));
+        pth = gc->CreatePath();
+        pth.MoveToPoint(gfr.x,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+        pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+        pth.CloseSubpath();
+        gc->FillPath(pth);
+
+        gfr.Offset(0, gfr.height + 10);
+        dc.DrawText(wxT("Radial Gradient with Stops and Gaps"), gfr.x, gfr.y);
+        gfr.Offset(0, TEXT_HEIGHT);
+
+        gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2,
+                                                   gfr.y + gfr.height / 2,
+                                                   gfr.x + gfr.width / 2,
+                                                   gfr.y + gfr.height / 2,
+                                                   gfr.width / 2,
+                                                   stops));
+        pth = gc->CreatePath();
+        pth.MoveToPoint(gfr.x,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+        pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+        pth.CloseSubpath();
+        gc->FillPath(pth);
+
+        gfr.Offset(0, gfr.height + 10);
+        dc.DrawText(wxT("Gradients with Stops and Transparency"), gfr.x, gfr.y);
+        gfr.Offset(0, TEXT_HEIGHT);
+
+        stops = wxGraphicsGradientStops(wxColour(255,0,0), wxTransparentColour);
+        stops.Add(wxColour(255,0,0), 0.33f);
+        stops.Add(wxTransparentColour, 0.33f);
+        stops.Add(wxTransparentColour, 0.67f);
+        stops.Add(wxColour(0,0,255), 0.67f);
+        stops.Add(wxColour(0,0,255), 1.0f);
+
+        pth = gc->CreatePath();
+        pth.MoveToPoint(gfr.x,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+        pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+        pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+        pth.CloseSubpath();
+
+        gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2,
+                                                   gfr.y + gfr.height / 2,
+                                                   gfr.x + gfr.width / 2,
+                                                   gfr.y + gfr.height / 2,
+                                                   gfr.width / 2,
+                                                   stops));
+        gc->FillPath(pth);
+
+        stops = wxGraphicsGradientStops(wxColour(255,0,0, 128), wxColour(0,0,255, 128));
+        stops.Add(wxColour(255,255,0,128), 0.33f);
+        stops.Add(wxColour(0,255,0,128), 0.67f);
+
+        gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y,
+                                                   gfr.x + gfr.width, gfr.y,
+                                                   stops));
+        gc->FillPath(pth);
+    }
+#endif // wxUSE_GRAPHICS_CONTEXT
+}
+
+void MyCanvas::DrawRegions(wxDC& dc)
+{
+    dc.DrawText(wxT("You should see a red rect partly covered by a cyan one ")
+                wxT("on the left"), 10, 5);
+    dc.DrawText(wxT("and 5 smileys from which 4 are partially clipped on the right"),
+                10, 5 + dc.GetCharHeight());
+    dc.DrawText(wxT("The second copy should be identical but right part of it ")
+                wxT("should be offset by 10 pixels."),
+                10, 5 + 2*dc.GetCharHeight());
+
+    DrawRegionsHelper(dc, 10, true);
+    DrawRegionsHelper(dc, 350, false);
+}
+
+void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime)
+{
+    wxCoord y = 100;
+
+    dc.DestroyClippingRegion();
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.SetPen( *wxTRANSPARENT_PEN );
+    dc.DrawRectangle( x, y, 310, 310 );
+
+    dc.SetClippingRegion( x + 10, y + 10, 100, 270 );
+
+    dc.SetBrush( *wxRED_BRUSH );
+    dc.DrawRectangle( x, y, 310, 310 );
+
+    dc.SetClippingRegion( x + 10, y + 10, 100, 100 );
+
+    dc.SetBrush( *wxCYAN_BRUSH );
+    dc.DrawRectangle( x, y, 310, 310 );
+
+    dc.DestroyClippingRegion();
+
+    wxRegion region(x + 110, y + 20, 100, 270);
+#if !defined(__WXMOTIF__)
+    if ( !firstTime )
+        region.Offset(10, 10);
+#endif
+    dc.SetDeviceClippingRegion(region);
+
+    dc.SetBrush( *wxGREY_BRUSH );
+    dc.DrawRectangle( x, y, 310, 310 );
+
+    if (m_smile_bmp.Ok())
+    {
+        dc.DrawBitmap( m_smile_bmp, x + 150, y + 150, true );
+        dc.DrawBitmap( m_smile_bmp, x + 130, y + 10,  true );
+        dc.DrawBitmap( m_smile_bmp, x + 130, y + 280, true );
+        dc.DrawBitmap( m_smile_bmp, x + 100, y + 70,  true );
+        dc.DrawBitmap( m_smile_bmp, x + 200, y + 70,  true );
+    }
+}
+
+#if TEST_CAIRO_EVERYWHERE
+extern wxGraphicsRenderer* gCairoRenderer;
+#endif
+
 void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
 {
-    wxPaintDC dc(this);
+    wxPaintDC pdc(this);
+
+#if wxUSE_GRAPHICS_CONTEXT
+#if TEST_CAIRO_EVERYWHERE
+    wxGCDC gdc;
+    gdc.SetGraphicsContext( gCairoRenderer->CreateContext( pdc ) );
+#else
+     wxGCDC gdc( pdc ) ;
+#endif
+    wxDC &dc = m_useContext ? (wxDC&) gdc : (wxDC&) pdc ;
+#else
+    wxDC &dc = pdc ;
+#endif
+
     PrepareDC(dc);
+
     m_owner->PrepareDC(dc);
 
     dc.SetBackgroundMode( m_owner->m_backgroundMode );
@@ -268,116 +1496,283 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
     if ( m_owner->m_colourBackground.Ok() )
         dc.SetTextBackground( m_owner->m_colourBackground );
 
-    // mark the origin
-    dc.DrawCircle(0, 0, 10);
-#ifndef __WXGTK__   // not implemented in wxGTK :-(
-    dc.FloodFill(0, 0, wxColour(255, 0, 0));
-#endif // __WXGTK__
+    if ( m_owner->m_textureBackground) {
+        if ( ! m_owner->m_backgroundBrush.Ok() ) {
+            wxColour clr(0,128,0);
+            wxBrush b(clr, wxSOLID);
+            dc.SetBackground(b);
+        }
+    }
 
-    dc.DrawText( "This is text", 110, 10 );
+    if ( m_clip )
+        dc.SetClippingRegion(100, 100, 100, 100);
 
-    dc.SetFont( wxFont( 18, wxSWISS, 0, 0 ) );
+    dc.Clear();
 
-    dc.DrawText( "This is Swiss 18pt text.", 110, 40 );
+    if ( m_owner->m_textureBackground )
+    {
+        dc.SetPen(*wxMEDIUM_GREY_PEN);
+        for ( int i = 0; i < 200; i++ )
+            dc.DrawLine(0, i*10, i*10, 0);
+    }
 
-    long length;
-    long height;
-    long descent;
-    dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent );
-    wxString text;
-    text.Printf( "Dimensions are length %ld, height %ld, descent %ld", length, height, descent );
-    dc.DrawText( text, 110, 80 );
+    switch ( m_show )
+    {
+        case File_ShowDefault:
+            DrawDefault(dc);
+            break;
 
-    dc.DrawRectangle( 100, 40, 4, height );
+        case File_ShowCircles:
+            DrawCircles(dc);
+            break;
 
-    text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() );
-    dc.DrawText( text, 110, 120 );
+        case File_ShowSplines:
+            DrawSplines(dc);
+            break;
+
+        case File_ShowRegions:
+            DrawRegions(dc);
+            break;
+
+        case File_ShowText:
+            DrawText(dc);
+            break;
 
+        case File_ShowLines:
+            DrawTestLines( 0, 100, 0, dc );
+            DrawTestLines( 0, 320, 1, dc );
+            DrawTestLines( 0, 540, 2, dc );
+            DrawTestLines( 0, 760, 6, dc );
+            break;
 
-    dc.DrawIcon( wxICON(mondrian), 310, 40 );
-    
-    DrawTestLines( 0, 200, 0, dc );
+        case File_ShowBrushes:
+            DrawTestBrushes(dc);
+            break;
 
-    DrawTestLines( 0, 400, 1, dc );
+        case File_ShowPolygons:
+            DrawTestPoly(dc);
+            break;
 
-    DrawTestLines( 0, 600, 2, dc );
+        case File_ShowMask:
+            DrawImages(dc, Draw_Normal);
+            break;
 
-    DrawTestLines( 0, 800, 6, dc );
+        case File_ShowMaskStretch:
+            DrawImages(dc, Draw_Stretch);
+            break;
+
+        case File_ShowOps:
+            DrawWithLogicalOps(dc);
+            break;
+
+#if wxUSE_GRAPHICS_CONTEXT
+        case File_ShowAlpha:
+            DrawAlpha(dc);
+            break;
+        case File_ShowGraphics:
+            DrawGraphics(gdc.GetGraphicsContext());
+            break;
+#endif
+
+        case File_ShowGradients:
+            DrawGradients(dc);
+            break;
+
+        default:
+            break;
+    }
+}
+
+void MyCanvas::OnMouseMove(wxMouseEvent &event)
+{
+#if wxUSE_STATUSBAR
+    {
+        wxClientDC dc(this);
+        PrepareDC(dc);
+        m_owner->PrepareDC(dc);
+
+        wxPoint pos = event.GetPosition();
+        long x = dc.DeviceToLogicalX( pos.x );
+        long y = dc.DeviceToLogicalY( pos.y );
+        wxString str;
+        str.Printf( wxT("Current mouse position: %d,%d"), (int)x, (int)y );
+        m_owner->SetStatusText( str );
+    }
+
+    if ( m_rubberBand )
+    {
+        int x,y, xx, yy ;
+        event.GetPosition(&x,&y);
+        CalcUnscrolledPosition( x, y, &xx, &yy );
+        m_currentpoint = wxPoint( xx , yy ) ;
+        wxRect newrect ( m_anchorpoint , m_currentpoint ) ;
+
+        wxClientDC dc( this ) ;
+        PrepareDC( dc ) ;
+
+        wxDCOverlay overlaydc( m_overlay, &dc );
+        overlaydc.Clear();
+#ifdef __WXMAC__
+        dc.SetPen( *wxGREY_PEN );
+        dc.SetBrush( wxColour( 192,192,192,64 ) );
+#else
+        dc.SetPen( wxPen( *wxLIGHT_GREY, 2, wxSOLID ) );
+        dc.SetBrush( *wxTRANSPARENT_BRUSH );
+#endif
+        dc.DrawRectangle( newrect );
+    }
+#else
+    wxUnusedVar(event);
+#endif // wxUSE_STATUSBAR
+}
+
+void MyCanvas::OnMouseDown(wxMouseEvent &event)
+{
+    int x,y,xx,yy ;
+    event.GetPosition(&x,&y);
+    CalcUnscrolledPosition( x, y, &xx, &yy );
+    m_anchorpoint = wxPoint( xx , yy ) ;
+    m_currentpoint = m_anchorpoint ;
+    m_rubberBand = true ;
+    CaptureMouse() ;
+}
+
+void MyCanvas::OnMouseUp(wxMouseEvent &event)
+{
+    if ( m_rubberBand )
+    {
+        ReleaseMouse();
+        {
+            wxClientDC dc( this );
+            PrepareDC( dc );
+            wxDCOverlay overlaydc( m_overlay, &dc );
+            overlaydc.Clear();
+        }
+        m_overlay.Reset();
+        m_rubberBand = false;
+
+        int x,y,xx,yy ;
+        event.GetPosition(&x,&y);
+        CalcUnscrolledPosition( x, y, &xx, &yy );
+
+        wxString str;
+        str.Printf( wxT("Rectangle selection from %d,%d to %d,%d"),
+            m_anchorpoint.x, m_anchorpoint.y , (int)xx, (int)yy );
+        wxMessageBox( str , wxT("Rubber-Banding") );
 
+    }
 }
 
 // ----------------------------------------------------------------------------
 // MyFrame
 // ----------------------------------------------------------------------------
 
-// the event tables connect the wxWindows events with the functions (event
+// the event tables connect the wxWidgets events with the functions (event
 // handlers) which process them. It can be also done at run-time, but for the
 // simple menu events like this the static method is much simpler.
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
-    EVT_MOTION    (MyFrame::OnMouseMove)
-    EVT_MENU      (Minimal_Quit,     MyFrame::OnQuit)
-    EVT_MENU      (Minimal_About,    MyFrame::OnAbout)
+    EVT_MENU      (File_Quit,     MyFrame::OnQuit)
+    EVT_MENU      (File_About,    MyFrame::OnAbout)
+    EVT_MENU      (File_Clip,     MyFrame::OnClip)
+#if wxUSE_GRAPHICS_CONTEXT
+    EVT_MENU      (File_GraphicContext, MyFrame::OnGraphicContext)
+#endif
+
+    EVT_MENU_RANGE(MenuShow_First,   MenuShow_Last,   MyFrame::OnShow)
+
     EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption)
 END_EVENT_TABLE()
 
 // frame constructor
 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
-       : wxFrame((wxFrame *)NULL, -1, title, pos, size)
+       : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size,
+                 wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
 {
     // set the frame icon
-    SetIcon(wxICON(mondrian));
+    SetIcon(wxICON(sample));
 
     wxMenu *menuFile = new wxMenu;
-    menuFile->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog");
+    menuFile->Append(File_ShowDefault, wxT("&Default screen\tF1"));
+    menuFile->Append(File_ShowText, wxT("&Text screen\tF2"));
+    menuFile->Append(File_ShowLines, wxT("&Lines screen\tF3"));
+    menuFile->Append(File_ShowBrushes, wxT("&Brushes screen\tF4"));
+    menuFile->Append(File_ShowPolygons, wxT("&Polygons screen\tF5"));
+    menuFile->Append(File_ShowMask, wxT("&Mask screen\tF6"));
+    menuFile->Append(File_ShowMaskStretch, wxT("1/&2 scaled mask\tShift-F6"));
+    menuFile->Append(File_ShowOps, wxT("&Raster operations screen\tF7"));
+    menuFile->Append(File_ShowRegions, wxT("Re&gions screen\tF8"));
+    menuFile->Append(File_ShowCircles, wxT("&Circles screen\tF9"));
+#if wxUSE_GRAPHICS_CONTEXT
+    menuFile->Append(File_ShowAlpha, wxT("&Alpha screen\tF10"));
+#endif
+    menuFile->Append(File_ShowSplines, wxT("&Splines screen\tF11"));
+    menuFile->Append(File_ShowGradients, wxT("&Gradients screen\tF12"));
+#if wxUSE_GRAPHICS_CONTEXT
+     menuFile->Append(File_ShowGraphics, wxT("&Graphics screen"));
+#endif
+    menuFile->AppendSeparator();
+    menuFile->AppendCheckItem(File_Clip, wxT("&Clip\tCtrl-C"), wxT("Clip/unclip drawing"));
+#if wxUSE_GRAPHICS_CONTEXT
+    menuFile->AppendCheckItem(File_GraphicContext, wxT("&Use GraphicContext\tCtrl-Y"), wxT("Use GraphicContext"));
+#endif
+    menuFile->AppendSeparator();
+    menuFile->Append(File_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog"));
     menuFile->AppendSeparator();
-    menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program");
+    menuFile->Append(File_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
 
     wxMenu *menuMapMode = new wxMenu;
-    menuMapMode->Append( MapMode_Text, "&TEXT map mode" );
-    menuMapMode->Append( MapMode_Lometric, "&LOMETRIC map mode" );
-    menuMapMode->Append( MapMode_Twips, "T&WIPS map mode" );
-    menuMapMode->Append( MapMode_Points, "&POINTS map mode" );
-    menuMapMode->Append( MapMode_Metric, "&METRIC map mode" );
+    menuMapMode->Append( MapMode_Text, wxT("&TEXT map mode") );
+    menuMapMode->Append( MapMode_Lometric, wxT("&LOMETRIC map mode") );
+    menuMapMode->Append( MapMode_Twips, wxT("T&WIPS map mode") );
+    menuMapMode->Append( MapMode_Points, wxT("&POINTS map mode") );
+    menuMapMode->Append( MapMode_Metric, wxT("&METRIC map mode") );
 
     wxMenu *menuUserScale = new wxMenu;
-    menuUserScale->Append( UserScale_StretchHoriz, "Stretch horizontally\tCtrl-H" );
-    menuUserScale->Append( UserScale_ShrinkHoriz, "Shrink  horizontally\tCtrl-G" );
-    menuUserScale->Append( UserScale_StretchVertic, "Stretch vertically\tCtrl-V" );
-    menuUserScale->Append( UserScale_ShrinkVertic, "Shrink vertically\tCtrl-W" );
+    menuUserScale->Append( UserScale_StretchHoriz, wxT("Stretch &horizontally\tCtrl-H") );
+    menuUserScale->Append( UserScale_ShrinkHoriz, wxT("Shrin&k horizontally\tCtrl-G") );
+    menuUserScale->Append( UserScale_StretchVertic, wxT("Stretch &vertically\tCtrl-V") );
+    menuUserScale->Append( UserScale_ShrinkVertic, wxT("&Shrink vertically\tCtrl-W") );
     menuUserScale->AppendSeparator();
-    menuUserScale->Append( UserScale_Restore, "Restore to normal\tCtrl-0" );
+    menuUserScale->Append( UserScale_Restore, wxT("&Restore to normal\tCtrl-0") );
 
     wxMenu *menuAxis = new wxMenu;
-    menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE );
-    menuAxis->Append( AxisMirror_Vertic, "Mirror vertically\tCtrl-N", "", TRUE );
+    menuAxis->AppendCheckItem( AxisMirror_Horiz, wxT("Mirror horizontally\tCtrl-M") );
+    menuAxis->AppendCheckItem( AxisMirror_Vertic, wxT("Mirror vertically\tCtrl-N") );
 
     wxMenu *menuLogical = new wxMenu;
-    menuLogical->Append( LogicalOrigin_MoveDown, "Move &down\tCtrl-D" );
-    menuLogical->Append( LogicalOrigin_MoveUp, "Move &up\tCtrl-U" );
-    menuLogical->Append( LogicalOrigin_MoveLeft, "Move &right\tCtrl-L" );
-    menuLogical->Append( LogicalOrigin_MoveRight, "Move &left\tCtrl-R" );
+    menuLogical->Append( LogicalOrigin_MoveDown, wxT("Move &down\tCtrl-D") );
+    menuLogical->Append( LogicalOrigin_MoveUp, wxT("Move &up\tCtrl-U") );
+    menuLogical->Append( LogicalOrigin_MoveLeft, wxT("Move &right\tCtrl-L") );
+    menuLogical->Append( LogicalOrigin_MoveRight, wxT("Move &left\tCtrl-R") );
+    menuLogical->AppendSeparator();
+    menuLogical->Append( LogicalOrigin_Set, wxT("Set to (&100, 100)\tShift-Ctrl-1") );
+    menuLogical->Append( LogicalOrigin_Restore, wxT("&Restore to normal\tShift-Ctrl-0") );
 
     wxMenu *menuColour = new wxMenu;
-    menuColour->Append( Colour_TextForeground, "Text foreground..." );
-    menuColour->Append( Colour_TextBackground, "Text background..." );
-    menuColour->Append( Colour_Background, "Background colour..." );
-    menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE );
+#if wxUSE_COLOURDLG
+    menuColour->Append( Colour_TextForeground, wxT("Text &foreground...") );
+    menuColour->Append( Colour_TextBackground, wxT("Text &background...") );
+    menuColour->Append( Colour_Background, wxT("Background &colour...") );
+#endif // wxUSE_COLOURDLG
+    menuColour->AppendCheckItem( Colour_BackgroundMode, wxT("&Opaque/transparent\tCtrl-B") );
+    menuColour->AppendCheckItem( Colour_TextureBackgound, wxT("Draw textured back&ground\tCtrl-T") );
 
     // now append the freshly created menu to the menu bar...
     wxMenuBar *menuBar = new wxMenuBar;
-    menuBar->Append(menuFile, "&File");
-    menuBar->Append(menuMapMode, "&MapMode");
-    menuBar->Append(menuUserScale, "&UserScale");
-    menuBar->Append(menuAxis, "&Axis");
-    menuBar->Append(menuLogical, "&LogicalOrigin");
-    menuBar->Append(menuColour, "&Colours");
+    menuBar->Append(menuFile, wxT("&File"));
+    menuBar->Append(menuMapMode, wxT("&Mode"));
+    menuBar->Append(menuUserScale, wxT("&Scale"));
+    menuBar->Append(menuAxis, wxT("&Axis"));
+    menuBar->Append(menuLogical, wxT("&Origin"));
+    menuBar->Append(menuColour, wxT("&Colours"));
 
     // ... and attach this menu bar to the frame
     SetMenuBar(menuBar);
 
-    // create a status bar just for fun (by default with 1 pane only)
+#if wxUSE_STATUSBAR
     CreateStatusBar(2);
-    SetStatusText("Welcome to wxWindows!");
+    SetStatusText(wxT("Welcome to wxWidgets!"));
+#endif // wxUSE_STATUSBAR
 
     m_mapMode = wxMM_TEXT;
     m_xUserScale = 1.0;
@@ -385,34 +1780,56 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
     m_xLogicalOrigin = 0;
     m_yLogicalOrigin = 0;
     m_xAxisReversed =
-    m_yAxisReversed = FALSE;
+    m_yAxisReversed = false;
     m_backgroundMode = wxSOLID;
+    m_colourForeground = *wxBLACK;
+    m_colourBackground = *wxLIGHT_GREY;
+    m_textureBackground = false;
 
     m_canvas = new MyCanvas( this );
-    m_canvas->SetScrollbars( 10, 10, 100, 200 );
+    m_canvas->SetScrollbars( 10, 10, 100, 240 );
 }
 
 // event handlers
 
 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 {
-    // TRUE is to force the frame to close
-    Close(TRUE);
+    // true is to force the frame to close
+    Close(true);
 }
 
 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 {
     wxString msg;
-    msg.Printf( _T("This is the about dialog of the drawing sample.\n")
-                _T("Copyright (c) Robert Roebling 1999")
+    msg.Printf( wxT("This is the about dialog of the drawing sample.\n")
+                wxT("This sample tests various primitive drawing functions\n")
+                wxT("(without any attempts to prevent flicker).\n")
+                wxT("Copyright (c) Robert Roebling 1999")
               );
 
-    wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this);
+    wxMessageBox(msg, wxT("About Drawing"), wxOK | wxICON_INFORMATION, this);
 }
 
-void MyFrame::OnOption(wxCommandEvent &event)
+void MyFrame::OnClip(wxCommandEvent& event)
 {
-    switch (event.GetInt())
+    m_canvas->Clip(event.IsChecked());
+}
+
+#if wxUSE_GRAPHICS_CONTEXT
+void MyFrame::OnGraphicContext(wxCommandEvent& event)
+{
+    m_canvas->UseGraphicContext(event.IsChecked());
+}
+#endif
+
+void MyFrame::OnShow(wxCommandEvent& event)
+{
+    m_canvas->ToShow(event.GetId());
+}
+
+void MyFrame::OnOption(wxCommandEvent& event)
+{
+    switch (event.GetId())
     {
         case MapMode_Text:
             m_mapMode = wxMM_TEXT;
@@ -442,6 +1859,14 @@ void MyFrame::OnOption(wxCommandEvent &event)
         case LogicalOrigin_MoveRight:
             m_xLogicalOrigin -= 10;
             break;
+        case LogicalOrigin_Set:
+            m_xLogicalOrigin =
+            m_yLogicalOrigin = -100;
+            break;
+        case LogicalOrigin_Restore:
+            m_xLogicalOrigin =
+            m_yLogicalOrigin = 0;
+            break;
 
         case UserScale_StretchHoriz:
             m_xUserScale *= 1.10;
@@ -467,6 +1892,7 @@ void MyFrame::OnOption(wxCommandEvent &event)
             m_xAxisReversed = !m_xAxisReversed;
             break;
 
+#if wxUSE_COLOURDLG
         case Colour_TextForeground:
             m_colourForeground = SelectColour();
             break;
@@ -482,11 +1908,17 @@ void MyFrame::OnOption(wxCommandEvent &event)
                 }
             }
             break;
+#endif // wxUSE_COLOURDLG
+
         case Colour_BackgroundMode:
             m_backgroundMode = m_backgroundMode == wxSOLID ? wxTRANSPARENT
                                                            : wxSOLID;
             break;
 
+        case Colour_TextureBackgound:
+            m_textureBackground = ! m_textureBackground;
+            break;
+
         default:
             // skip Refresh()
             return;
@@ -497,25 +1929,13 @@ void MyFrame::OnOption(wxCommandEvent &event)
 
 void MyFrame::PrepareDC(wxDC& dc)
 {
-    dc.SetMapMode( m_mapMode );
-    dc.SetUserScale( m_xUserScale, m_yUserScale );
     dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin );
     dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed );
+    dc.SetUserScale( m_xUserScale, m_yUserScale );
+    dc.SetMapMode( m_mapMode );
 }
 
-void MyFrame::OnMouseMove(wxMouseEvent &event)
-{
-    wxClientDC dc(this);
-    PrepareDC(dc);
-
-    wxPoint pos = event.GetPosition();
-    long x = dc.DeviceToLogicalX( pos.x );
-    long y = dc.DeviceToLogicalY( pos.y );
-    wxString str;
-    str.Printf( "Current mouse position: %d,%d", (int)x, (int)y );
-    SetStatusText( str );
-}
-
+#if wxUSE_COLOURDLG
 wxColour MyFrame::SelectColour()
 {
     wxColour col;
@@ -529,3 +1949,4 @@ wxColour MyFrame::SelectColour()
 
     return col;
 }
+#endif // wxUSE_COLOURDLG