+// 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)
+END_EVENT_TABLE()
+
+#include "smile.xpm"
+
+MyCanvas::MyCanvas(MyFrame *parent)
+ : wxScrolledWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
+ wxHSCROLL | wxVSCROLL | wxNO_FULL_REPAINT_ON_RESIZE)
+{
+ m_owner = parent;
+ m_show = Show_Default;
+ 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)
+{
+ 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(_T("Solid green"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxRED, wxCROSSDIAG_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(_T("Hatched red"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*gs_bmpMask));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(_T("Stipple mono"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*gs_bmpNoMask));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(_T("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(_T("You should see two (irregular) stars below, the left one ")
+ _T("hatched"), 10, 10);
+ dc.DrawText(_T("except for the central region and the right ")
+ _T("one entirely hatched"), 10, 30);
+ dc.DrawText(_T("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( wxT("black"), width, wxSOLID) );
+ dc.SetBrush( *wxRED_BRUSH );
+ 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(_T("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(_T("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(_T("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( _T("This is text"), 110, 10 );
+ dc.DrawRotatedText( _T("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( _T("This is Swiss 18pt text."), 110, 40 );
+
+ wxCoord length;
+ wxCoord height;
+ wxCoord descent;
+ dc.GetTextExtent( _T("This is Swiss 18pt text."), &length, &height, &descent );
+ text.Printf( wxT("Dimensions are length %ld, height %ld, descent %ld"), 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);
+ dc.DrawText( _T("There should be no text below"), 110, 150 );
+ dc.DrawRectangle( 110, y, 100, height );
+
+ // twice drawn inverted should result in invisible
+ y += height;
+ dc.DrawText( _T("Invisible text"), 110, y );
+ dc.DrawRectangle( 110, y, 100, height );
+ dc.DrawText( _T("Invisible text"), 110, y );
+ dc.DrawRectangle( 110, y, 100, height );
+ dc.SetLogicalFunction(wxCOPY);
+
+ y += height;
+ dc.DrawRectangle( 110, y, 100, height );
+ dc.DrawText( _T("Visible text"), 110, y );
+}
+
+static const struct
+{
+ const wxChar *name;
+ int 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(_T("original image"), 0, 0);
+ dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0);
+ dc.DrawText(_T("with colour mask"), 0, 100);
+ dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, true);
+ dc.DrawText(_T("the mask image"), 0, 200);
+ dc.DrawBitmap(*gs_bmpMask, 0, 220, 0);
+ dc.DrawText(_T("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& 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;
+
+ 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.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);
+
+ // 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)
+{
+#if wxUSE_SPLINES
+ dc.DrawText(_T("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(_T("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(_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 ")
+ _T("on the left"), 10, 5);
+ dc.DrawText(_T("and 5 smileys from which 4 are partially clipped on the right"),
+ 10, 5 + dc.GetCharHeight());
+ dc.DrawText(_T("The second copy should be identical but right part of it ")
+ _T("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__) && !defined(__WXMAC__)
+ if ( !firstTime )
+ region.Offset(10, 10);
+#endif
+ dc.SetClippingRegion(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 );
+ }
+}
+
+void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
+{
+ 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);
+
+ dc.SetBackgroundMode( m_owner->m_backgroundMode );
+ if ( m_owner->m_backgroundBrush.Ok() )
+ dc.SetBackground( m_owner->m_backgroundBrush );
+ if ( m_owner->m_colourForeground.Ok() )
+ dc.SetTextForeground( m_owner->m_colourForeground );
+ if ( m_owner->m_colourBackground.Ok() )
+ dc.SetTextBackground( m_owner->m_colourBackground );
+
+ if ( m_owner->m_textureBackground) {
+ if ( ! m_owner->m_backgroundBrush.Ok() ) {
+ wxColour clr(0,128,0);
+ wxBrush b(clr, wxSOLID);
+ dc.SetBackground(b);
+ }
+ }
+
+ if ( m_clip )
+ dc.SetClippingRegion(100, 100, 100, 100);
+
+ dc.Clear();
+
+ 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);
+ }
+
+ switch ( m_show )
+ {
+ case Show_Default:
+ DrawDefault(dc);
+ break;
+
+ case Show_Circles:
+ DrawCircles(dc);
+ break;
+
+ case Show_Splines:
+ DrawSplines(dc);
+ break;
+
+ case Show_Regions:
+ DrawRegions(dc);
+ break;
+
+ case Show_Text:
+ DrawText(dc);
+ break;
+
+ case Show_Lines:
+ DrawTestLines( 0, 100, 0, dc );
+ DrawTestLines( 0, 320, 1, dc );
+ DrawTestLines( 0, 540, 2, dc );
+ DrawTestLines( 0, 760, 6, dc );
+ break;
+
+ case Show_Brushes:
+ DrawTestBrushes(dc);
+ break;
+
+ case Show_Polygons:
+ DrawTestPoly(dc);
+ break;
+
+ case Show_Mask:
+ DrawImages(dc, Draw_Normal);
+ break;
+
+ case Show_Mask_Stretch:
+ DrawImages(dc, Draw_Stretch);
+ 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;
+ }
+}
+
+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 );
+#else
+ wxUnusedVar(event);
+#endif // wxUSE_STATUSBAR
+}
+
+// ----------------------------------------------------------------------------
+// MyFrame
+// ----------------------------------------------------------------------------
+
+// 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_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()
+
projects / wxWidgets.git / blobdiff