QML Calendar not showing week day or month year (however it does seem to be there....) - qt

Question

I am using Qt 5.13 and in general Qt.Controls 2 however the calendar only exists in v1.0 or the labs version (which I can't get to work, so using V1).
My code is
import QtQuick 2.2
import QtQuick.Controls 1.4 as Old
import Tree 1.0
import "."
ApplicationWindow {
id: window
width: 800; height: 1000
title: "TreeView Example"
visible: true
Old.Calendar {
anchors.centerIn: parent
id: calendar
}
}
However when I do this, I don't see the day of the week, nor the month/year in the navivagation bar, although I can see where they should be:
I have tried to add a navigationBar delegate, but this then gets rid of the navigation arrows.
style: CalendarStyle {
navigationBar: Text {
text: "hello"
}
}
So, how do I have the nav arrows, show the month/year and show the days of week? The documentation seems to suggest I would get these out of the box...
Now... I thought I could add drop downs as a work around to choose month/year and place them in the nav bar... however when I do that I can actually see that the days of the week are there, just their text colour is white, so I feel I am missing a trick with regard to the navigation bar...?

Answer 1

Worth reading the comments in response to #Aleph0's post, but to get it working I had to copy the default styles and place them within my element. The final code (stripping out the bits that aren't specifically about the calendar then), looks like
import QtQuick.Controls 2.4
import QtQuick.Dialogs 1.2
import QtQuick.Layouts 1.3
import QtQuick 2.2
import QtQuick.Controls 1.4 as Old
import QtQuick.Controls.Styles 1.4
import QtQuick.Controls.Private 1.0
ApplicationWindow {
id: window
width: 300; height: 300
title: "Calendar Example"
visible: true
ColumnLayout {
anchors.fill: parent
Old.Calendar {
id: calendar
style: CalendarStyle {
gridVisible: true
dayOfWeekDelegate: Rectangle {
color: gridVisible ? "#fcfcfc" : "transparent"
implicitHeight: Math.round(TextSingleton.implicitHeight * 2.25)
Label {
text: control.locale.dayName(styleData.dayOfWeek, control.dayOfWeekFormat)
anchors.centerIn: parent
}
}
navigationBar: Rectangle {
height: Math.round(TextSingleton.implicitHeight * 2.73)
color: "#f9f9f9"
Rectangle {
color: Qt.rgba(1,1,1,0.6)
height: 1
width: parent.width
}
Rectangle {
anchors.bottom: parent.bottom
height: 1
width: parent.width
color: "#ddd"
}
HoverButton {
id: previousMonth
width: parent.height
height: width
anchors.verticalCenter: parent.verticalCenter
anchors.left: parent.left
source: "./assets/leftanglearrow.png"
onClicked: control.showPreviousMonth()
}
Label {
id: dateText
text: styleData.title
elide: Text.ElideRight
horizontalAlignment: Text.AlignHCenter
font.pixelSize: TextSingleton.implicitHeight * 1.25
anchors.verticalCenter: parent.verticalCenter
anchors.left: previousMonth.right
anchors.leftMargin: 2
anchors.right: nextMonth.left
anchors.rightMargin: 2
}
HoverButton {
id: nextMonth
width: parent.height
height: width
anchors.verticalCenter: parent.verticalCenter
anchors.right: parent.right
source: "./assets/rightanglearrow.png"
onClicked: control.showNextMonth()
}
}
}
}
}
}
That results in
In an ideal world, there would be an alternative to a) using Private controls as that seems like I am using Qt internal modules, but thats an easy fix by using an Image with a mouse area, and if I didn't have to use any 1.x controls either, but there doesn't seem to be a 2.x way of graphically displaying dates etc. Anyway, hopefully this can be useful to someone - it's literally a copy paste job of the default styling so it can be simplified alot...

Answer 2

I'm also using Qt 5.13.0 and just tried you example. After removing some imports it was working with the following files:
main.qml
import QtQuick 2.2
import QtQuick.Controls 1.4 as Old
import QtQuick.Controls 2.12
ApplicationWindow {
id: window
width: 800; height: 1000
title: "TreeView Example"
visible: true
Old.Calendar {
anchors.centerIn: parent
id: calendar
}
}
main.cpp
#include <QGuiApplication>
#include <QQmlApplicationEngine>
int main(int argc, char* argv[])
{
QGuiApplication app(argc, argv);
QQmlApplicationEngine engine;
QQmlContext* context = engine.rootContext();
engine.load(QUrl("./data/main.qml"));
return app.exec();
}
I'll obtain the following:
I suggest, that you will try my code and compare it with your application.

Answer 3

I had the same problem - days of week and title were almost invisible, because they were written with white color on light gray background. In my case the problem was in desktop color theme in Ubuntu Studio. After I changed it from Dark to Light the text appeared in black as expected. It seems Qt5 can't handle dark themes well or implementation in Ubuntu Studio (22.04) is buggy. The same was true for text in Button-s.