nodeeditor/examples/styles/main.cpp

#include <QtWidgets/QApplication>

#include <nodes/NodeData>
#include <nodes/FlowScene>
#include <nodes/FlowView>
#include <nodes/DataModelRegistry>
#include <nodes/NodeStyle>
#include <nodes/FlowViewStyle>
#include <nodes/ConnectionStyle>

#include "models.hpp"

using QtNodes::DataModelRegistry;
using QtNodes::FlowScene;
using QtNodes::FlowView;
using QtNodes::FlowViewStyle;
using QtNodes::NodeStyle;
using QtNodes::ConnectionStyle;

static std::shared_ptr<DataModelRegistry>
registerDataModels()
{
  auto ret = std::make_shared<DataModelRegistry>();

  ret->registerModel<MyDataModel>();

  return ret;
}


static
void
setStyle()
{
  FlowViewStyle::setStyle(
  R"(
  {
    "FlowViewStyle": {
      "BackgroundColor": [255, 255, 240],
      "FineGridColor": [245, 245, 230],
      "CoarseGridColor": [235, 235, 220]
    }
  }
  )");

  NodeStyle::setNodeStyle(
  R"(
  {
    "NodeStyle": {
      "NormalBoundaryColor": "darkgray",
      "SelectedBoundaryColor": "deepskyblue",
      "GradientColor0": "mintcream",
      "GradientColor1": "mintcream",
      "GradientColor2": "mintcream",
      "GradientColor3": "mintcream",
      "ShadowColor": [200, 200, 200],
      "FontColor": [10, 10, 10],
      "FontColorFaded": [100, 100, 100],
      "ConnectionPointColor": "white",
      "PenWidth": 2.0,
      "HoveredPenWidth": 2.5,
      "ConnectionPointDiameter": 10.0,
      "Opacity": 1.0
    }
  }
  )");

  ConnectionStyle::setConnectionStyle(
  R"(
  {
    "ConnectionStyle": {
      "ConstructionColor": "gray",
      "NormalColor": "black",
      "SelectedColor": "gray",
      "SelectedHaloColor": "deepskyblue",
      "HoveredColor": "deepskyblue",

      "LineWidth": 3.0,
      "ConstructionLineWidth": 2.0,
      "PointDiameter": 10.0,

      "UseDataDefinedColors": false
    }
  }
  )");
}


//------------------------------------------------------------------------------

int
main(int argc, char* argv[])
{
  QApplication app(argc, argv);

  setStyle();

  FlowScene scene(registerDataModels());

  FlowView view(&scene);

  view.setWindowTitle("Style example");
  view.resize(800, 600);
  view.show();

  return app.exec();
}