[Interest] TextMetrics give wrong metrics for some strings
Elvis Stansvik
elvstone at gmail.com
Mon Mar 21 10:27:27 CET 2016
Hi all,
I'm attempting to make a custom Button item where the size of the
button is determined by the metrics of the text it holds. The reason
is I want to put a thin rectangle below the text, sort of a stylistic
underlining (text underlining is not sufficient, for aesthetic
reasons).
But I'm seeing strange metrics reported for some strings.
BEGIN TEST CASE
Button.qml:
import QtQuick 2.5
// Attempt at a button with a size determined by the metrics
// of its text.
Rectangle {
property alias text: text.text
property alias pointSize: text.font.pointSize
width: textMetrics.width
height: textMetrics.height
TextMetrics {
id: textMetrics
font: text.font
text: text.text
}
Text {
id: text
text: "Button"
}
}
Test.qml:
import QtQuick 2.5
Rectangle {
width: 800
height: 600
// Something wrong with the metrics on this one :/
Button {
text: "Hej"
pointSize: 42
border.color: "red"
anchors.top: parent.top
}
// These two seem OK.
Button {
text: "Something longer"
pointSize: 42
border.color: "red"
anchors.verticalCenter: parent.verticalCenter
}
Button {
text: "Test"
pointSize: 42
border.color: "red"
anchors.bottom: parent.bottom
}
}
END TEST CASE
See the attached screenshot (metrics_are_off.png) which shows the
result. Notice how the size of the buttons (Rectangle) are correct for
the last two buttons, but for the first, the text is sticking out a
little :/
Any idea why this is, and how I can solve it?
I'm also attaching a sketch (sketch.png) of the look I'm after for my
buttons. If you know of a simpler way to achieve this, I'm idle ears.
Cheers,
Elvis
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