Exemplo n.º 1
0
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);
}
Exemplo n.º 2
0
// 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
}