I want to draw a rectangle around a QML Text object that is using word wrapping. TextMetrics seems like it would be ideal, but it does not appear to support wrapped text.
How can I measure how text is laid out in a Text object? Must I match the wrapping logic and manually calculate the offsets using TextMetrics and FontMetrics?
You can use contentWidth and contentHeight:
Text {
text: "..."
wrapMode: Text.Wrap
Rectangle {
border.color: "red"
color: "transparent"
width: parent.contentWidth
height: parent.contentHeight
}
}
Related
The following code to create a rounded TextField
TextField {
id: usernameTextField
placeholderText: qsTr("username")
width: 250
height: 40
anchors {
top: parent.top
topMargin: giveDetailsLabel.anchors.topMargin + 36
horizontalCenter: parent.horizontalCenter
horizontalCenterOffset: 0
}
background: Rectangle {
radius: 20
border.color: "#C9C9C9"
border.width: 1
}
verticalAlignment: TextField.AlignVCenter
font.pixelSize: 16
font.weight: Font.Normal
font.family: "Open Sans"
leftPadding: 10
}
The problem with the following code, the text is not in the center it's shifted up for some reason and I try many different ways like anchors the background rectangle to fit the parent and it not work, using verticalAlignment: TextField.AlignVCenter not work properly
another question is I have the same exact text field but I used echoMode: TextField.Password to make the password, the password dots are so big, I try to decrease the font but the text also decrease before it converts to dot, so how to decrease the dot only without decrease the text size so user see what they are writing in big font before the character converts, here how it looks on Android
and also again the text shifted up and for dots for character and never center inside the text.
using QT 6.2
I am posting because I want a text the be wrap into a rectangle (if the text is too long, it will be cut and the end of it won't be display)
For now I tried with :
Rectangle {
id: form
property alias px: form.x
property alias py: form.y
property alias pheight: form.height
property alias pwidth: form.width
property ItemControl itemControl
color: itemControl.backgroundColor
border.width: 1
border.color: itemControl.color
radius: 1
Text {
id: text_field
height: parent.height
width: parent.width
anchors.centerIn: parent
text:itemControl.text
color: itemControl.color
font.pixelSize: 16
font.family: robotoMono.name
font.bold: false
wrapMode: text_field.WordWrap
maximumLineCount: 1
}
}
But I don't have the expected result. The text is still continuing after the end of the rectangle. Does anyone knows how to compel the text into the rectangle ?
You used Text.WordWrap but the text only contains one word (the . and underscores aren't treated as word separators). Text.Wrap and Text.WrapAnywhere may be more appropriate in this case. Moreover, maximumLineCount: 1 will limit Text to only show one line.
Consider making the font smaller, the rectangle larger, or redesign the UI for this bit.
I have a problem with a Rectangle that should contain Text. Text should be in the Rectangle defined but it goes beyond it.
import QtQuick 2.12
import QtQuick.Window 2.12
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Rectangle
{
id:listRest
width: parent.width/2.7
height: parent.height/2.5
color: "dimgray"
anchors.left: parent.left
anchors.topMargin: Math.round(parent.height)/12
anchors.margins: Math.round(parent.width)/50
Text {
anchors.fill: parent
anchors.centerIn: parent
text: qsTr("QML (Qt Modeling Language) is a user interface markup language. It is a declarative language for designing user interface–centric applications.")
}
}
}
How can I get Text to be only in Rectangle?
By default, the Text will display its content as it is. So, if the text doesn't contain enough new line and it's too long, the text will be display outside the rectangle.
Use wrapMode: Text.WordWrapto wrap the text in the bounds of the rectangle and
elide: Text.ElideRight to elide the text if it's too long to fit in the rectangle.
Using a wrapMode (a max width)
Or maybe a simple solution that is not elegant, but work. Use "\n" for a new line when is it possible without other over-complicated methods if is just only for a simple small text line.
In following listview's items, length of text can be different (10, or 1000 characters), so I want make each list view item height fit text height.
(Like css height: auto).
Component {
id: sysNotificationsDelegate
Rectangle {
anchors.left: parent.left
anchors.right: parent.right
height: childrenRect.height
color: "#eee"
Text {
text: model.body // <-- TEXT SIZE CAN BE DIFFERENT
wrapMode: Text.WordWrap
}
}
}
ListView {
anchors.fill: parent
spacing: 10
model: ListModel {
id: listModel
}
delegate: sysNotificationsDelegate
}
What is proper and most performant way to achieve this? (taking into account that I will have a lot of such elements and I've read that property bindings in qml have some additional performance cost)
(Qt 5.10)
For a Text to be able to wrap (or elide), it needs to have a width set, otherwise it will expand with no limit.
Text has 3 important width properties:
width: consider it the max width of a line of your text, it should always be set unless you don't want to limit the width of your screen (you can scroll or pan horizontally). Setting wrapMode or elide with no width will have no effect.
implicitWidth: the width the text would need to occupy to fit in a single line. Includes the left and right padding. Does not depend on the explicit width. Not sure when to use it ¯\_(ツ)_/¯ any ideas in the comments?
contentWidth: the width the text is actually occupying taking in account the wrapping and eliding. Does not include the left and right padding. Depends on the explicit width. Use this to query the width of your text, like when you want to draw a box around some text (a chat bubble for example).
The same corresponding properties exist for height too. maximumLineCount can limit the height of a text in addition to an explicit height
That means that in your case you want to do:
Rectangle {
anchors.left: parent.left
anchors.right: parent.right
height: text.contentHeight // contentHeight, height and implicitHeight are all the same here since there's no padding, no maximumLineCount and height isn't explicitely set
color: "#eee"
Text {
id: text
text: model.body // <-- TEXT SIZE CAN BE DIFFERENT
width: parent.width // remember, width = max width for Text
wrapMode: Text.WordWrap
}
}
Text type has this nice feature fontSizeMode, which tries to fit the font size to the actual size of the visual component. So that when I set the font size to 20 and I resize the window so this font size is too big, it automatically lowers the font size.
Text {
text: qsTr("Text")
font.pointSize: 20
fontSizeMode: Text.Fit
}
Now I wanted to use this functionality with the TextInput type, but there is no fontSizeMode available. So my question is, how can I achieve the same functionality with TextInput? Now, when the font size is set and I downsize the window, the string in the TextInput is cut in half like this:
You can scale the element down to constrain it to a specific width:
Rectangle {
width: 100
height: 50
color: "red"
TextInput {
anchors.centerIn: parent
font.pointSize: 20
text: "test"
scale: Math.min(1, parent.width / contentWidth)
Rectangle {
color: "white"
anchors.fill: parent
z: -1
}
}
}
I sticked with this solution. Bind the font.pixelSize property to the parent height. Although I'm not sure if it is 100% correct, it does exactly what I want. If there is some problem about it, please make me know.
Text {
text: qsTr("Text")
font.pixelSize: 0.1 * parent.height
}