Förklaring av sidor

Vårt program

I föregående handledning, lyckades vi ställa in, bygga och kompilera vårt första Kirigami-program. Med grunderna på plats, kan vi börja vår resa mot att skapa ett program med fullständig funktion.

These tutorials will focus on creating an application that lets the user see how many days are left until an event of their choice. That doesn't mean you shouldn't deviate and try to create your own thing! Just make sure you pay close attention to how things work first, so that you can adjust when things are different in your own code. We also recommend you check out the Kirigami Gallery, which provides a number of useful UI examples and easy access to all the code.

I det här avsnittet fokuserar vi på sidor, ett av de viktigaste strukturelementen i alla Kirigami-program.

Sidor

Kirigami apps are typically organized in Pages . Those are the different "screens" of an app. You will want to have a page dedicated to specific aspects of your app's interaction, and to make things easier you can create different QML files, one for each page.

Pages are organized in a page stack where they can be pushed and popped. On a phone only the top-most page is shown, whereas on a larger screen (desktop or tablet), if desired, multiple pages can be shown next to each other.

Låt oss gå tillbaka till filen main.qml vi skapade i föregående handledning:

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// Includes relevant modules used by the QML
import QtQuick 2.15
import QtQuick.Controls 2.15 as Controls
import QtQuick.Layouts 1.15
import org.kde.kirigami 2.20 as Kirigami

// Provides basic features needed for all kirigami applications
Kirigami.ApplicationWindow {
    // Unique identifier to reference this object
    id: root

    // Window title
    // i18nc() makes a string translatable
    // and provides additional context for the translators
    title: i18nc("@title:window", "Hello World")

    // Set the first page that will be loaded when the app opens
    // This can also be set to an id of a Kirigami.Page
    pageStack.initialPage: Kirigami.Page {
        Controls.Label {
            // Center label horizontally and vertically within parent object
            anchors.centerIn: parent
            text: i18n("Hello World!")
        }
    }
}

We make our application start to our Kirigami.Page . All we have included in it is a label containing "Hello World", but we're going to spruce things up a little.

The idea behind our app is that we're going to be able to display a bunch of countdowns to the user. The problem with a normal Kirigami.Page is that it has a fixed vertical size, but don't worry: Kirigami also supports scrollable pages. Kirigami.ScrollablePage is going to be our main page now.

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import QtQuick 2.15
import QtQuick.Controls 2.15 as Controls
import QtQuick.Layouts 1.15
import org.kde.kirigami 2.20 as Kirigami

Kirigami.ApplicationWindow {
    id: root

    title: i18nc("@title:window", "Day Kountdown")

    pageStack.initialPage: Kirigami.ScrollablePage {
        title: i18nc("@title", "Kountdown")
    }
}

Kirigami pages also feature neat titles placed within the toolbar, quickly indicating to the user which page they are on. All we need to do is to set a page title using the title property of Kirigami.ScrollablePage . In this case, we used one of the i18nc() functions we explored in our previous tutorial to this end.

pageStack.initialPage: Qt.resolvedUrl("StartPage.qml")