Example #1
0
//------------------------------------------------------------------------------
int
main(int argc, char *argv[])
  {
  QApplication app(argc, argv);
  Canvas c;
  Pen(Pen::SOLID, 1, Color(0, 0, 0));
    {
    c.Select(Brush(Color(128, 128, 0, Color::TRANSPARENT)));
    c.DrawKeyhole(200, 100, 50, 100, Angle::Degrees(-20), Angle::Degrees(20));
    c.DrawKeyhole(400, 100, 50, 100, Angle::Degrees(70), Angle::Degrees(110));
    c.DrawKeyhole(200, 300, 50, 100, Angle::Degrees(160), Angle::Degrees(200));
    c.DrawKeyhole(400, 300, 50, 100, Angle::Degrees(-110), Angle::Degrees(-70));
    c.show();
    app.exec();
    }
    {
    c.Clear();
    c.DrawKeyhole(200, 100, 50, 100, Angle::Degrees(35), Angle::Degrees(55));
    c.DrawKeyhole(400, 100, 50, 100, Angle::Degrees(125), Angle::Degrees(145));
    c.DrawKeyhole(200, 300, 50, 100, Angle::Degrees(215), Angle::Degrees(235));
    c.DrawKeyhole(400, 300, 50, 100, Angle::Degrees(305), Angle::Degrees(325));
    c.show();
    app.exec();
    }
    {
    c.Clear();
    c.DrawFilledRectangle(0, 0, 100, 100, Color(128, 128, 128,
                                                Color::TRANSPARENT));
    c.DrawFilledRectangle(100, 100, 200, 200, Color(128, 0, 0,
                                                    Color::TRANSPARENT));
    c.DrawFilledRectangle(150, 150, 250, 250, Color(0, 128, 0,
                                                    Color::TRANSPARENT));
    c.DrawFilledRectangle(200, 200, 300, 300, Color(0, 0, 128,
                                                    Color::TRANSPARENT));
    c.DrawTransparentText(0, 0, "0");
    c.DrawTransparentText(0, 100, "100");
    c.DrawTransparentText(0, 200, "200");
    c.DrawTransparentText(0, 300, "300");
    c.DrawTransparentText(0, 400, "400");
    c.DrawTransparentText(0, 500, "500");
    c.DrawTransparentText(100, c.GetFontHeight(), "100");
    c.DrawTransparentText(200, c.GetFontHeight(), "200");
    c.DrawTransparentText(300, c.GetFontHeight(), "300");
    c.DrawTransparentText(400, c.GetFontHeight(), "400");
    c.DrawTransparentText(500, c.GetFontHeight(), "500");
    c.show();
    app.exec();
    }
    {
    c.Clear();
    c.DrawOutlineRectangle(100, 100, 200, 200, Color(255, 0, 0));
    c.show();
    app.exec();
    }
    {
    c.Clear();
    c.DrawRoundRectangle(100, 100, 200, 200, 10, 10);
    c.DrawRoundRectangle(200, 200, 300, 300, 100, 100);
    c.DrawRoundRectangle(300, 300, 400, 400, 50, 50);
    c.show();
    app.exec();
    }
    {
    c.Clear();
    PixelRect rc;
    rc.left   = 100;
    rc.top    = 100;
    rc.right  = 200;
    rc.bottom = 200;
    c.DrawRaisedEdge(rc);
    c.show();
    app.exec();
    }
    {
    c.Clear();
    RasterPoint rp[4];
    rp[0] = {100, 100};
    rp[1] = {200, 200};
    rp[2] = {200, 300};
    rp[3] = {300, 400};
    c.DrawPolyline(rp, 4);
    c.show();
    app.exec();
    }
    {
    c.Clear();
    RasterPoint rp[6];
    rp[0] = {100, 100};
    rp[1] = {150,  50};
    rp[2] = {200, 100};
    rp[3] = {200, 200};
    rp[4] = {150, 200};
    rp[5] = {100, 100};
    c.DrawPolygon(rp, 6);
    c.show();
    app.exec();
    }
    {
    c.Clear();
    RasterPoint rp[4];
    rp[0] = {100, 100};
    rp[1] = {200,  50};
    rp[2] = {200, 150};
    rp[3] = {150, 200};
    c.DrawTriangleFan(rp, 4);
    c.show();
    app.exec();
    }
    {
    c.Clear();
    c.DrawHLine(100, 200, 100, Color(255, 0, 0));
    c.DrawHLine(100, 200, 200, Color(0, 255, 0));
    c.DrawHLine(100, 200, 300, Color(0, 0, 255));
    c.show();
    app.exec();
    }
    {
    c.Clear();
    c.DrawLine(100, 100, 200, 200);
    c.DrawCircle(250, 250, 50);
    c.DrawSegment(100, 250, 50, Angle::Degrees(10), Angle::Degrees(30), false);
    c.show();
    app.exec();
    }
    {
    c.Clear();
    c.DrawAnnulus(100, 100, 50, 100, Angle::Degrees(10), Angle::Degrees(60));
    c.DrawAnnulus(300, 100, 50, 100, Angle::Degrees(0),  Angle::Degrees(360));
    c.DrawAnnulus(100, 300, 50, 100, Angle::Degrees(0),  Angle::Degrees(0));
    c.show();
    app.exec();
    }
    {
    PixelSize rc = c.CalcTextSize("Hello");
    std::cout << "Size of \"Hello\": " << rc.cx << ", " << rc.cy << std::endl;
    c.DrawClippedText(100, 100, rc.cx / 2, "Hello");
    c.show();
    app.exec();
    }
    {
    std::cout << "Height of font: " << c.GetFontHeight() << std::endl;
    }
    {
    c.Clear();
    c.DrawText(0, 50, "50");
    c.Clear();
    c.show();
    return app.exec();
    }
  }
Example #2
0
void
AirspaceLabelRenderer::DrawInternal(Canvas &canvas,
#ifndef ENABLE_OPENGL
                                    Canvas &stencil_canvas,
#endif
                                    const WindowProjection &projection,
                                    const AirspaceRendererSettings &settings,
                                    const AirspaceWarningCopy &awc,
                                    const AirspacePredicate &visible,
                                    const AirspaceWarningConfig &config)
{
  AirspaceLabelList labels;
  for (const auto &i : airspaces->QueryWithinRange(projection.GetGeoScreenCenter(),
                                                   projection.GetScreenDistanceMeters())) {
    const AbstractAirspace &airspace = i.GetAirspace();
    if (visible(airspace))
      labels.Add(airspace.GetCenter(), airspace.GetType(), airspace.GetBase(),
                 airspace.GetTop());
  }

  if(settings.label_selection == AirspaceRendererSettings::LabelSelection::ALL)
  {
    labels.Sort(config);

    // default paint settings
    canvas.SetTextColor(look.label_text_color);
    canvas.Select(*look.name_font);
    canvas.Select(look.label_pen);
    canvas.Select(look.label_brush);
    canvas.SetBackgroundTransparent();

    // draw
    TCHAR topText[NAME_SIZE + 1];
    TCHAR baseText[NAME_SIZE + 1];

    for (const auto &label : labels) {
      // size of text
      AirspaceFormatter::FormatAltitudeShort(topText, label.top, false);
      PixelSize topSize = canvas.CalcTextSize(topText);
      AirspaceFormatter::FormatAltitudeShort(baseText, label.base, false);
      PixelSize baseSize = canvas.CalcTextSize(baseText);
      int labelWidth = std::max(topSize.cx, baseSize.cx) +
                       2 * Layout::GetTextPadding();
      int labelHeight = topSize.cy + baseSize.cy;

      // box
      const auto pos = projection.GeoToScreen(label.pos);
      PixelRect rect;
      rect.left = pos.x - labelWidth / 2;
      rect.top = pos.y;
      rect.right = rect.left + labelWidth;
      rect.bottom = rect.top + labelHeight;
      canvas.Rectangle(rect.left, rect.top, rect.right, rect.bottom);

#ifdef USE_GDI
      canvas.DrawLine(rect.left + Layout::GetTextPadding(),
                      rect.top + labelHeight / 2,
                      rect.right - Layout::GetTextPadding(),
                      rect.top + labelHeight / 2);
#else
      canvas.DrawHLine(rect.left + Layout::GetTextPadding(),
                       rect.right - Layout::GetTextPadding(),
                       rect.top + labelHeight / 2, look.label_pen.GetColor());
#endif

      // top text
      int x = rect.right - Layout::GetTextPadding() - topSize.cx;
      int y = rect.top;
      canvas.DrawText(x, y, topText);

      // base text
      x = rect.right - Layout::GetTextPadding() - baseSize.cx;
      y = rect.bottom - baseSize.cy;
      canvas.DrawText(x, y, baseText);
    }
  }
}