don't remove the old tags of different kinds when setting new style, this removes...

[wxWidgets.git] / samples / drawing / drawing.cpp

diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp
index 9f598ddf9e01092cc1fcc8ecb214282e759c0cd7..2c217f88266d94bbec74b0ac0220fb9932b64fbb 100644 (file)
--- a/samples/drawing/drawing.cpp
+++ b/samples/drawing/drawing.cpp
@@ -34,6 +34,19 @@
 #include "wx/image.h"
 #include "wx/artprov.h"
 
 #include "wx/image.h"
 #include "wx/artprov.h"
 

+#define wxTEST_GRAPHICS 1
+
+#if wxTEST_GRAPHICS
+#include "wx/graphics.h"
+#if wxUSE_GRAPHICS_CONTEXT == 0
+#undef wxTEST_GRAPHICS
+#define wxTEST_GRAPHICS 0
+#endif
+#else
+#undef wxUSE_GRAPHICS_CONTEXT
+#define wxUSE_GRAPHICS_CONTEXT 0
+#endif
+

 // ----------------------------------------------------------------------------
 // ressources
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // ressources
 // ----------------------------------------------------------------------------


@@ -57,10 +70,16 @@ enum ScreenToShow
     Show_Brushes,
     Show_Polygons,
     Show_Mask,
     Show_Brushes,
     Show_Polygons,
     Show_Mask,

+    Show_Mask_Stretch,

     Show_Ops,
     Show_Regions,
     Show_Circles,
     Show_Ops,
     Show_Regions,
     Show_Circles,

-    Show_Splines
+    Show_Splines,
+#if wxUSE_GRAPHICS_CONTEXT
+    Show_Alpha,
+#endif
+    Show_Gradient,
+    Show_Max

 };
 
 // ----------------------------------------------------------------------------
 };
 
 // ----------------------------------------------------------------------------


@@ -112,6 +131,9 @@ public:
     void OnQuit(wxCommandEvent& event);
     void OnAbout(wxCommandEvent& event);
     void OnClip(wxCommandEvent& event);
     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 OnShow(wxCommandEvent &event);
     void OnOption(wxCommandEvent &event);
 


@@ -152,18 +174,31 @@ public:
 
     // set or remove the clipping region
     void Clip(bool clip) { m_clip = clip; 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:
 
 protected:

+    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 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);
+    void DrawImages(wxDC& dc, DrawMode mode);

     void DrawWithLogicalOps(wxDC& dc);
     void DrawWithLogicalOps(wxDC& dc);

+#if wxUSE_GRAPHICS_CONTEXT
+    void DrawAlpha(wxDC& dc);
+#endif

     void DrawRegions(wxDC& dc);
     void DrawCircles(wxDC& dc);
     void DrawSplines(wxDC& dc);
     void DrawDefault(wxDC& dc);
     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);
 
 
     void DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime);
 


@@ -174,6 +209,9 @@ private:
     wxBitmap     m_smile_bmp;
     wxIcon       m_std_icon;
     bool         m_clip;
     wxBitmap     m_smile_bmp;
     wxIcon       m_std_icon;
     bool         m_clip;

+#if wxUSE_GRAPHICS_CONTEXT
+    bool         m_useContext ;
+#endif

 
     DECLARE_EVENT_TABLE()
 };
 
     DECLARE_EVENT_TABLE()
 };


@@ -196,13 +234,21 @@ enum
     File_ShowBrushes,
     File_ShowPolygons,
     File_ShowMask,
     File_ShowBrushes,
     File_ShowPolygons,
     File_ShowMask,

+    File_ShowMaskStretch,

     File_ShowOps,
     File_ShowRegions,
     File_ShowCircles,
     File_ShowSplines,
     File_ShowOps,
     File_ShowRegions,
     File_ShowCircles,
     File_ShowSplines,

-    MenuShow_Last = File_ShowSplines,
+#if wxUSE_GRAPHICS_CONTEXT
+    File_ShowAlpha,
+#endif
+    File_ShowGradients,
+    MenuShow_Last = File_ShowGradients,

 
     File_Clip,
 
     File_Clip,

+#if wxUSE_GRAPHICS_CONTEXT
+    File_GraphicContext,
+#endif

 
     MenuOption_First,
 
 
     MenuOption_First,
 


@@ -272,6 +318,7 @@ bool MyApp::LoadImages()
     wxPathList pathList;
     pathList.Add(_T("."));
     pathList.Add(_T(".."));
     wxPathList pathList;
     pathList.Add(_T("."));
     pathList.Add(_T(".."));

+    pathList.Add(_T("../.."));

 
     wxString path = pathList.FindValidPath(_T("pat4.bmp"));
     if ( !path )
 
     wxString path = pathList.FindValidPath(_T("pat4.bmp"));
     if ( !path )


@@ -315,6 +362,9 @@ bool MyApp::LoadImages()
 // `Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
 // `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(_T("Drawing sample"),
                                  wxPoint(50, 50), wxSize(550, 340));
     // Create the main application window
     MyFrame *frame = new MyFrame(_T("Drawing sample"),
                                  wxPoint(50, 50), wxSize(550, 340));


@@ -380,6 +430,9 @@ MyCanvas::MyCanvas(MyFrame *parent)
     m_smile_bmp = wxBitmap(smile_xpm);
     m_std_icon = wxArtProvider::GetIcon(wxART_INFORMATION);
     m_clip = false;
     m_smile_bmp = wxBitmap(smile_xpm);
     m_std_icon = wxArtProvider::GetIcon(wxART_INFORMATION);
     m_clip = false;

+#if wxUSE_GRAPHICS_CONTEXT
+    m_useContext = false;
+#endif

 }
 
 void MyCanvas::DrawTestBrushes(wxDC& dc)
 }
 
 void MyCanvas::DrawTestBrushes(wxDC& dc)


@@ -511,7 +564,7 @@ void MyCanvas::DrawDefault(wxDC& dc)
     // mark the origin
     dc.DrawCircle(0, 0, 10);
 
     // mark the origin
     dc.DrawCircle(0, 0, 10);
 

-#if !wxMAC_USE_CORE_GRAPHICS
+#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
     // 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


@@ -791,7 +844,7 @@ static const struct
     { wxT("wxXOR"),          wxXOR           },
 };
 
     { wxT("wxXOR"),          wxXOR           },
 };
 

-void MyCanvas::DrawImages(wxDC& dc)
+void MyCanvas::DrawImages(wxDC& dc, DrawMode mode)

 {
     dc.DrawText(_T("original image"), 0, 0);
     dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0);
 {
     dc.DrawText(_T("original image"), 0, 0);
     dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0);


@@ -813,7 +866,15 @@ void MyCanvas::DrawImages(wxDC& dc)
 
         dc.DrawText(rasterOperations[n].name, x, y - 20);
         memDC.SelectObject(*gs_bmpWithColMask);
 
         dc.DrawText(rasterOperations[n].name, x, y - 20);
         memDC.SelectObject(*gs_bmpWithColMask);

-        dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, true);
+        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);
+        }

     }
 }
 
     }
 }
 


@@ -853,12 +914,63 @@ void MyCanvas::DrawWithLogicalOps(wxDC& dc)
     }
 }
 
     }
 }
 

+#if wxUSE_GRAPHICS_CONTEXT
+#ifdef __WXGTK20__
+void MyCanvas::DrawAlpha(wxDC& no_dc)
+#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
+

 void MyCanvas::DrawCircles(wxDC& dc)
 {
     int x = 100,
         y = 100,
         r = 20;
 
 void MyCanvas::DrawCircles(wxDC& dc)
 {
     int x = 100,
         y = 100,
         r = 20;
 

+    dc.SetPen( *wxRED_PEN );
+    dc.SetBrush( *wxGREEN_BRUSH );
+

     dc.DrawText(_T("Some circles"), 0, y);
     dc.DrawCircle(x, y, r);
     dc.DrawCircle(x + 2*r, y, r);
     dc.DrawText(_T("Some circles"), 0, y);
     dc.DrawCircle(x, y, r);
     dc.DrawCircle(x + 2*r, y, r);


@@ -881,6 +993,36 @@ void MyCanvas::DrawCircles(wxDC& dc)
     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);
     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(_T("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(_T("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(_T("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)
 }
 
 void MyCanvas::DrawSplines(wxDC& dc)


@@ -971,6 +1113,54 @@ void MyCanvas::DrawSplines(wxDC& dc)
 #endif
 }
 
 #endif
 }
 

+void MyCanvas::DrawGradients(wxDC& dc)
+{
+    static const int TEXT_HEIGHT = 15;
+
+    // LHS: linear
+    wxRect r(10, 10, 50, 50);
+    dc.DrawText(_T("wxRIGHT"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxRIGHT);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(_T("wxLEFT"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxLEFT);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(_T("wxDOWN"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxDOWN);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(_T("wxUP"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxUP);
+
+
+    // RHS: concentric
+    r = wxRect(200, 10, 50, 50);
+    dc.DrawText(_T("Blue inside"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(_T("White inside"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillConcentric(r, *wxWHITE, *wxBLUE);
+
+    r.Offset(0, r.height + 10);
+    dc.DrawText(_T("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(_T("Blue in bottom right corner"), r.x, r.y);
+    r.Offset(0, TEXT_HEIGHT);
+    dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(r.width, r.height));
+}
+

 void MyCanvas::DrawRegions(wxDC& dc)
 {
     dc.DrawText(_T("You should see a red rect partly covered by a cyan one ")
 void MyCanvas::DrawRegions(wxDC& dc)
 {
     dc.DrawText(_T("You should see a red rect partly covered by a cyan one ")


@@ -1028,7 +1218,15 @@ void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime)
 
 void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
 {
 
 void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
 {

-    wxPaintDC dc(this);
+    wxPaintDC pdc(this);
+
+#if wxUSE_GRAPHICS_CONTEXT
+     wxGCDC gdc( pdc ) ;
+    wxDC &dc = m_useContext ? (wxDC&) gdc : (wxDC&) pdc ;
+#else
+    wxDC &dc = pdc ;
+#endif
+

     PrepareDC(dc);
 
     m_owner->PrepareDC(dc);
     PrepareDC(dc);
 
     m_owner->PrepareDC(dc);


@@ -1099,12 +1297,29 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
             break;
 
         case Show_Mask:
             break;
 
         case Show_Mask:

-            DrawImages(dc);
+            DrawImages(dc, Draw_Normal);
+            break;
+
+        case Show_Mask_Stretch:
+            DrawImages(dc, Draw_Stretch);

             break;
 
         case Show_Ops:
             DrawWithLogicalOps(dc);
             break;
             break;
 
         case Show_Ops:
             DrawWithLogicalOps(dc);
             break;

+
+#if wxUSE_GRAPHICS_CONTEXT
+        case Show_Alpha:
+            DrawAlpha(dc);
+            break;
+#endif
+
+        case Show_Gradient:
+            DrawGradients(dc);
+            break;
+
+        default:
+            break;

     }
 }
 
     }
 }
 


@@ -1137,6 +1352,9 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_MENU      (File_Quit,     MyFrame::OnQuit)
     EVT_MENU      (File_About,    MyFrame::OnAbout)
     EVT_MENU      (File_Clip,     MyFrame::OnClip)
     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(MenuShow_First,   MenuShow_Last,   MyFrame::OnShow)
 


@@ -1158,12 +1376,20 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
     menuFile->Append(File_ShowBrushes, _T("&Brushes screen\tF4"));
     menuFile->Append(File_ShowPolygons, _T("&Polygons screen\tF5"));
     menuFile->Append(File_ShowMask, _T("&Mask screen\tF6"));
     menuFile->Append(File_ShowBrushes, _T("&Brushes screen\tF4"));
     menuFile->Append(File_ShowPolygons, _T("&Polygons screen\tF5"));
     menuFile->Append(File_ShowMask, _T("&Mask screen\tF6"));

+    menuFile->Append(File_ShowMaskStretch, _T("1/&2 scaled mask\tShift-F6"));

     menuFile->Append(File_ShowOps, _T("&ROP screen\tF7"));
     menuFile->Append(File_ShowRegions, _T("Re&gions screen\tF8"));
     menuFile->Append(File_ShowCircles, _T("&Circles screen\tF9"));
     menuFile->Append(File_ShowOps, _T("&ROP screen\tF7"));
     menuFile->Append(File_ShowRegions, _T("Re&gions screen\tF8"));
     menuFile->Append(File_ShowCircles, _T("&Circles screen\tF9"));

-    menuFile->Append(File_ShowSplines, _T("&Splines screen"));
+#if wxUSE_GRAPHICS_CONTEXT
+    menuFile->Append(File_ShowAlpha, _T("&Alpha screen\tF10"));
+#endif
+    menuFile->Append(File_ShowSplines, _T("&Splines screen\tF11"));
+    menuFile->Append(File_ShowGradients, _T("&Gradients screen\tF12"));

     menuFile->AppendSeparator();
     menuFile->AppendCheckItem(File_Clip, _T("&Clip\tCtrl-C"), _T("Clip/unclip drawing"));
     menuFile->AppendSeparator();
     menuFile->AppendCheckItem(File_Clip, _T("&Clip\tCtrl-C"), _T("Clip/unclip drawing"));

+#if wxUSE_GRAPHICS_CONTEXT
+    menuFile->AppendCheckItem(File_GraphicContext, _T("&Use GraphicContext\tCtrl-Y"), _T("Use GraphicContext"));
+#endif

     menuFile->AppendSeparator();
     menuFile->Append(File_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
     menuFile->AppendSeparator();
     menuFile->AppendSeparator();
     menuFile->Append(File_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
     menuFile->AppendSeparator();


@@ -1264,6 +1490,13 @@ void MyFrame::OnClip(wxCommandEvent& event)
     m_canvas->Clip(event.IsChecked());
 }
 
     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((ScreenToShow)(event.GetId() - MenuShow_First));
 void MyFrame::OnShow(wxCommandEvent& event)
 {
     m_canvas->ToShow((ScreenToShow)(event.GetId() - MenuShow_First));