void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
{
// Make another frame, containing a canvas
MyChild *subframe = new MyChild(frame, _T("Canvas Frame"));
wxString title;
title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
subframe->SetTitle(title);
// Give it an icon
#ifdef __WXMSW__
subframe->SetIcon(wxIcon(_T("chrt_icn")));
#else
subframe->SetIcon(wxIcon( mondrian_xpm ));
#endif
// Make a menubar
wxMenu *file_menu = new wxMenu;
file_menu->Append(MDI_NEW_WINDOW, _T("&New window"));
file_menu->Append(MDI_CHILD_QUIT, _T("&Close child"), _T("Close this window"));
file_menu->Append(MDI_QUIT, _T("&Exit"));
wxMenu *option_menu = new wxMenu;
option_menu->Append(MDI_REFRESH, _T("&Refresh picture"));
option_menu->Append(MDI_CHANGE_TITLE, _T("Change &title...\tCtrl-T"));
option_menu->AppendSeparator();
option_menu->Append(MDI_CHANGE_POSITION, _T("Move frame\tCtrl-M"));
option_menu->Append(MDI_CHANGE_SIZE, _T("Resize frame\tCtrl-S"));
wxMenu *help_menu = new wxMenu;
help_menu->Append(MDI_ABOUT, _T("&About"));
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, _T("&File"));
menu_bar->Append(option_menu, _T("&Child"));
menu_bar->Append(help_menu, _T("&Help"));
// Associate the menu bar with the frame
subframe->SetMenuBar(menu_bar);
#if wxUSE_STATUSBAR
subframe->CreateStatusBar();
subframe->SetStatusText(title);
#endif // wxUSE_STATUSBAR
int width, height;
subframe->GetClientSize(&width, &height);
MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
subframe->canvas = canvas;
// Give it scrollbars
canvas->SetScrollbars(20, 20, 50, 50);
subframe->Show(true);
}
// Define the repainting behaviour
void MyCanvas::OnDraw(wxDC& dc)
{
// vars to use ...
#if wxUSE_STATUSBAR
wxString s;
#endif // wxUSE_STATUSBAR
wxPen wP;
wxBrush wB;
wxPoint points[6];
wxColour wC;
wxFont wF;
dc.SetFont(*wxSWISS_FONT);
dc.SetPen(*wxGREEN_PEN);
switch (m_index)
{
default:
case 0:
// draw lines to make a cross
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
// draw point colored line and spline
wP = *wxCYAN_PEN;
wP.SetWidth(3);
dc.SetPen(wP);
dc.DrawPoint (25,15);
dc.DrawLine(50, 30, 200, 30);
dc.DrawSpline(50, 200, 50, 100, 200, 10);
#if wxUSE_STATUSBAR
s = wxT("Green Cross, Cyan Line and spline");
#endif // wxUSE_STATUSBAR
break;
case 1:
// draw standard shapes
dc.SetBrush(*wxCYAN_BRUSH);
dc.SetPen(*wxRED_PEN);
dc.DrawRectangle(10, 10, 100, 70);
wB = wxBrush (wxT("DARK ORCHID"), wxBRUSHSTYLE_TRANSPARENT);
dc.SetBrush (wB);
dc.DrawRoundedRectangle(50, 50, 100, 70, 20);
dc.SetBrush (wxBrush(wxT("GOLDENROD")) );
dc.DrawEllipse(100, 100, 100, 50);
points[0].x = 100; points[0].y = 200;
points[1].x = 70; points[1].y = 260;
points[2].x = 160; points[2].y = 230;
points[3].x = 40; points[3].y = 230;
points[4].x = 130; points[4].y = 260;
points[5].x = 100; points[5].y = 200;
dc.DrawPolygon(5, points);
dc.DrawLines (6, points, 160);
#if wxUSE_STATUSBAR
s = wxT("Blue rectangle, red edge, clear rounded rectangle, gold ellipse, gold and clear stars");
#endif // wxUSE_STATUSBAR
break;
case 2:
// draw text in Arial or similar font
dc.DrawLine(50,25,50,35);
dc.DrawLine(45,30,55,30);
dc.DrawText(wxT("This is a Swiss-style string"), 50, 30);
wC = dc.GetTextForeground();
dc.SetTextForeground (wxT("FIREBRICK"));
// no effect in msw ??
dc.SetTextBackground (wxT("WHEAT"));
dc.DrawText(wxT("This is a Red string"), 50, 200);
dc.DrawRotatedText(wxT("This is a 45 deg string"), 50, 200, 45);
dc.DrawRotatedText(wxT("This is a 90 deg string"), 50, 200, 90);
wF = wxFont ( 18, wxROMAN, wxITALIC, wxBOLD, false, wxT("Times New Roman"));
dc.SetFont(wF);
dc.SetTextForeground (wC);
dc.DrawText(wxT("This is a Times-style string"), 50, 60);
#if wxUSE_STATUSBAR
s = wxT("Swiss, Times text; red text, rotated and colored orange");
#endif // wxUSE_STATUSBAR
break;
case 3 :
// four arcs start and end points, center
dc.SetBrush(*wxGREEN_BRUSH);
dc.DrawArc ( 200,300, 370,230, 300,300 );
dc.SetBrush(*wxBLUE_BRUSH);
dc.DrawArc ( 270-50, 270-86, 270-86, 270-50, 270,270 );
dc.SetDeviceOrigin(-10,-10);
dc.DrawArc ( 270-50, 270-86, 270-86, 270-50, 270,270 );
dc.SetDeviceOrigin(0,0);
wP.SetColour (wxT("CADET BLUE"));
dc.SetPen(wP);
dc.DrawArc ( 75,125, 110, 40, 75, 75 );
wP.SetColour (wxT("SALMON"));
dc.SetPen(wP);
dc.SetBrush(*wxRED_BRUSH);
//top left corner, width and height, start and end angle
// 315 same center and x-radius as last pie-arc, half Y radius
dc.DrawEllipticArc(25,50,100,50,180.0,45.0);
wP = *wxCYAN_PEN;
wP.SetWidth(3);
dc.SetPen(wP);
//wxTRANSPARENT));
dc.SetBrush (wxBrush (wxT("SALMON")));
dc.DrawEllipticArc(300, 0,200,100, 0.0,145.0);
//same end point
dc.DrawEllipticArc(300, 50,200,100,90.0,145.0);
dc.DrawEllipticArc(300,100,200,100,90.0,345.0);
#if wxUSE_STATUSBAR
s = wxT("This is an arc test page");
#endif // wxUSE_STATUSBAR
break;
case 4:
dc.DrawCheckMark ( 30,30,25,25);
dc.SetBrush (wxBrush (wxT("SALMON"),wxBRUSHSTYLE_TRANSPARENT));
dc.DrawCheckMark ( 80,50,75,75);
dc.DrawRectangle ( 80,50,75,75);
#if wxUSE_STATUSBAR
s = wxT("Two check marks");
#endif // wxUSE_STATUSBAR
break;
case 5:
wF = wxFont ( 18, wxROMAN, wxITALIC, wxBOLD, false, wxT("Times New Roman"));
dc.SetFont(wF);
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
dc.DrawText(wxT("This is an 18pt string"), 50, 60);
// rescale and draw in blue
wP = *wxCYAN_PEN;
dc.SetPen(wP);
dc.SetUserScale (2.0,0.5);
dc.SetDeviceOrigin(200,0);
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
dc.DrawText(wxT("This is an 18pt string 2 x 0.5 UserScaled"), 50, 60);
dc.SetUserScale (2.0,2.0);
dc.SetDeviceOrigin(200,200);
dc.DrawText(wxT("This is an 18pt string 2 x 2 UserScaled"), 50, 60);
wP = *wxRED_PEN;
dc.SetPen(wP);
dc.SetUserScale (1.0,1.0);
dc.SetDeviceOrigin(0,10);
dc.SetMapMode (wxMM_METRIC); //svg ignores this
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
dc.DrawText(wxT("This is an 18pt string in MapMode"), 50, 60);
#if wxUSE_STATUSBAR
s = wxT("Scaling test page");
#endif // wxUSE_STATUSBAR
break;
case 6:
dc.DrawIcon( wxICON(sample), 10, 10 );
dc.DrawBitmap ( wxBitmap(svgbitmap_xpm), 50,15);
#if wxUSE_STATUSBAR
s = wxT("Icon and Bitmap ");
#endif // wxUSE_STATUSBAR
break;
case 7:
dc.SetTextForeground(wxT("RED"));
dc.DrawText(wxT("Red = Clipping Off"), 30, 5);
dc.SetTextForeground(wxT("GREEN"));
dc.DrawText(wxT("Green = Clipping On"), 30, 25);
dc.SetTextForeground(wxT("BLACK"));
dc.SetPen(*wxRED_PEN);
dc.SetBrush (wxBrush (wxT("SALMON"),wxBRUSHSTYLE_TRANSPARENT));
dc.DrawCheckMark ( 80,50,75,75);
dc.DrawRectangle ( 80,50,75,75);
dc.SetPen(*wxGREEN_PEN);
// Clipped checkmarks
dc.DrawRectangle(180,50,75,75);
dc.SetClippingRegion(180,50,75,75); // x,y,width,height version
dc.DrawCheckMark ( 180,50,75,75);
dc.DestroyClippingRegion();
dc.DrawRectangle(wxRect(80,150,75,75));
dc.SetClippingRegion(wxPoint(80,150),wxSize(75,75)); // pt,size version
dc.DrawCheckMark ( 80,150,75,75);
dc.DestroyClippingRegion();
dc.DrawRectangle(wxRect(180,150,75,75));
dc.SetClippingRegion(wxRect(180,150,75,75)); // rect version
dc.DrawCheckMark ( 180,150,75,75);
dc.DestroyClippingRegion();
dc.DrawRectangle(wxRect( 80,250,50,65));
dc.DrawRectangle(wxRect(105,260,50,65));
dc.SetClippingRegion(wxRect( 80,250,50,65)); // second call to SetClippingRegion
dc.SetClippingRegion(wxRect(105,260,50,65)); // forms intersection with previous
dc.DrawCheckMark(80,250,75,75);
dc.DestroyClippingRegion(); // only one call to destroy (there's no stack)
/*
** Clipping by wxRegion not implemented for SVG. Should be
** possible, but need to access points that define the wxRegion
** from inside DoSetDeviceClippingRegion() and wxRegion does not
** implement anything like getPoints().
points[0].x = 180; points[0].y = 250;
points[1].x = 255; points[1].y = 250;
points[2].x = 180; points[2].y = 325;
points[3].x = 255; points[3].y = 325;
points[4].x = 180; points[4].y = 250;
dc.DrawLines (5, points);
wxRegion reg = wxRegion(5,points);
dc.SetClippingRegion(reg);
dc.DrawCheckMark ( 180,250,75,75);
dc.DestroyClippingRegion();
*/
#if wxUSE_STATUSBAR
s = wxT("Clipping region");
#endif // wxUSE_STATUSBAR
break;
case 8:
wxString txtStr;
wxCoord txtX, txtY, txtW, txtH, txtDescent, txtEL;
wxCoord txtPad = 0;
wP = *wxRED_PEN;
dc.SetPen(wP);
//dc.SetBackgroundMode(wxBRUSHSTYLE_SOLID);
//dc.SetTextBackground(*wxBLUE);
// Horizontal text
txtStr = wxT("Horizontal string");
dc.GetTextExtent(txtStr, &txtW, &txtH, &txtDescent, &txtEL);
txtX = 50;
txtY = 300;
dc.DrawRectangle(txtX, txtY, txtW + 2*txtPad, txtH + 2*txtPad);
dc.DrawText(txtStr, txtX + txtPad, txtY + txtPad);
// Vertical text
txtStr = wxT("Vertical string");
dc.GetTextExtent(txtStr, &txtW, &txtH, &txtDescent, &txtEL);
txtX = 50;
txtY = 250;
dc.DrawRectangle(txtX, txtY - (txtW + 2*txtPad), txtH + 2*txtPad, txtW + 2*txtPad);
dc.DrawRotatedText(txtStr, txtX + txtPad, txtY - txtPad, 90);
// 45 degree text
txtStr = wxT("45 deg string");
dc.GetTextExtent(txtStr, &txtW, &txtH, &txtDescent, &txtEL);
double lenW = (double)(txtW + 2*txtPad) / sqrt(2.0);
double lenH = (double)(txtH + 2*txtPad) / sqrt(2.0);
double padding = (double)txtPad / sqrt(2.0);
txtX = 150;
txtY = 200;
dc.DrawLine(txtX - padding, txtY, txtX + lenW, txtY - lenW); // top
dc.DrawLine(txtX + lenW, txtY - lenW, txtX - padding + lenH + lenW, txtY + (lenH - lenW));
dc.DrawLine(txtX - padding, txtY, txtX - padding + lenH, txtY + lenH);
dc.DrawLine(txtX - padding + lenH, txtY + lenH, txtX - padding + lenH + lenW, txtY + (lenH - lenW)); // bottom
dc.DrawRotatedText(txtStr, txtX, txtY, 45);
#if wxUSE_STATUSBAR
s = wxT("Text position test page");
#endif // wxUSE_STATUSBAR
break;
}
#if wxUSE_STATUSBAR
m_child->SetStatusText(s);
#endif // wxUSE_STATUSBAR
}