Files
proton-bridge/internal/frontend/qt/frontend_init.go
2021-11-30 10:12:36 +01:00

87 lines
2.9 KiB
Go

// Copyright (c) 2021 Proton Technologies AG
//
// This file is part of ProtonMail Bridge.
//
// ProtonMail Bridge is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ProtonMail Bridge is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
//go:build build_qt
// +build build_qt
package qt
import (
"errors"
"os"
qmlLog "github.com/ProtonMail/proton-bridge/internal/frontend/qt/log"
"github.com/therecipe/qt/core"
"github.com/therecipe/qt/qml"
"github.com/therecipe/qt/quickcontrols2"
"github.com/therecipe/qt/widgets"
)
func (f *FrontendQt) initiateQtApplication() error {
qmlLog.InstallMessageHandler()
f.app = widgets.NewQApplication(len(os.Args), os.Args)
core.QCoreApplication_SetApplicationName(f.programName)
core.QCoreApplication_SetApplicationVersion(f.programVersion)
// High DPI scaling for windows.
core.QCoreApplication_SetAttribute(core.Qt__AA_EnableHighDpiScaling, false)
// Software OpenGL: to avoid dedicated GPU.
core.QCoreApplication_SetAttribute(core.Qt__AA_UseSoftwareOpenGL, true)
// Bridge runs background, no window is needed to be opened.
f.app.SetQuitOnLastWindowClosed(false)
// QML Engine and path
f.engine = qml.NewQQmlEngine(f.app)
rootComponent := qml.NewQQmlComponent2(f.engine, f.engine)
f.qml = NewQMLBackend(f.engine)
f.qml.setup(f)
f.engine.AddImportPath("qrc:/qml/")
f.engine.AddPluginPath("qrc:/qml/")
// Add style: if colorScheme / style is forgotten we should fallback to
// default style and should be Proton
quickcontrols2.QQuickStyle_AddStylePath("qrc:/qml/")
quickcontrols2.QQuickStyle_SetStyle("Proton")
// Before loading a component we should load translations.
// See https://github.com/qt/qtdeclarative/blob/bedef212a74a62452ed31d7f65536a6c67881fc4/src/qml/qml/qqmlapplicationengine.cpp#L69 as example.
rootComponent.LoadUrl(core.NewQUrl3("qrc:/qml/Bridge.qml", 0))
if rootComponent.Status() != qml.QQmlComponent__Ready {
return errors.New("QML not loaded properly")
}
// Instead of creating component right away we use BeginCreate to stop right before binding evaluation.
// That is needed to set backend property so all bindings will be calculated properly.
rootObject := rootComponent.BeginCreate(f.engine.RootContext())
// Check QML is loaded properly.
if rootObject == nil {
return errors.New("QML not created properly")
}
rootObject.SetProperty("backend", f.qml.ToVariant())
rootComponent.CompleteCreate()
return nil
}