+ MyFrame *frame = new MyFrame(wxT("Drawing sample"),
+ wxDefaultPosition, wxSize(550, 840));
+
+ // Show it
+ frame->Show(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
+ }
+#if wxUSE_LIBPNG
+ wxImage::AddHandler( new wxPNGHandler );
+#endif
+
+ 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 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()
+
+#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 = 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("Diagonally hatched red"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxBLUE, wxCROSS_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Cross hatched blue"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxCYAN, wxVERTICAL_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Vertically hatched cyan"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxBLACK, wxHORIZONTAL_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Horizontally hatched black"), 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( 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(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)
+{
+ // Draw circle centered at the origin, then flood fill it with a different
+ // color. Done with a wxMemoryDC because Blit (used by generic
+ // wxDoFloodFill) from a window that is being painted gives unpredictable
+ // results on wxGTK
+ {
+ wxImage img(21, 21, false);
+ img.Clear(1);
+ wxBitmap bmp(img);
+ {
+ wxMemoryDC mdc(bmp);
+ mdc.SetBrush(dc.GetBrush());
+ mdc.SetPen(dc.GetPen());
+ mdc.DrawCircle(10, 10, 10);
+ wxColour c;
+ if (mdc.GetPixel(11, 11, &c))
+ {
+ mdc.SetBrush(wxColour(128, 128, 0));
+ mdc.FloodFill(11, 11, c, wxFLOOD_SURFACE);
+ }
+ }
+ bmp.SetMask(new wxMask(bmp, wxColour(1, 1, 1)));
+ dc.DrawBitmap(bmp, -10, -10, true);
+ }
+
+ 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.IsOk())
+ 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);
projects / wxWidgets.git / blobdiff