I'm new to Qt/QML and trying to create a custom button that has a label and an icon. I want to change the font to bold and the colour to some bright value since the button has a dark background. The problem is that as soon as I define label: Text
, the icon would disappear. How can I redefine the label and still keep the icon?
import QtQuick 2.2
import QtQuick.Controls 1.1
import QtQuick.Controls.Styles 1.1
Item
{
property alias text: btn.text;
property alias iconSource: btn.iconSource;
Button
{
id: btn;
style: ButtonStyle
{
background: Rectangle
{
implicitWidth: 100;
implicitHeight: 25;
border.width: (control.activeFocus ? 2 : 1);
border.color: "#888";
radius: 8;
gradient: Gradient
{
GradientStop
{
position: 0;
color: (control.pressed ? "#929292" : "#424242")
}
GradientStop
{
position: 1;
color: (control.pressed ? "#818181" : "#313131")
}
}
}
label: Text
{
text: control.text;
// iconSource: btn.iconSource;
font.bold: true;
color: "#f2f2f2"
}
}
}
}
You have to modify the ButtonStyle
by copying and modifying the default built-in style:
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.2
import QtQuick.Controls 1.2
import QtQuick.Controls.Private 1.0
/*!
\qmltype ButtonStyle
\inqmlmodule QtQuick.Controls.Styles
\since 5.1
\ingroup controlsstyling
\brief Provides custom styling for Button
You can create a custom button by replacing the "background" delegate
of the ButtonStyle with a custom design.
Example:
\qml
Button {
text: "A button"
style: ButtonStyle {
background: Rectangle {
implicitWidth: 100
implicitHeight: 25
border.width: control.activeFocus ? 2 : 1
border.color: "#888"
radius: 4
gradient: Gradient {
GradientStop { position: 0 ; color: control.pressed ? "#ccc" : "#eee" }
GradientStop { position: 1 ; color: control.pressed ? "#aaa" : "#ccc" }
}
}
}
}
\endqml
If you need a custom label, you can replace the label item.
*/
Style {
id: buttonstyle
/*! The \l {QtQuick.Controls::}{Button} this style is attached to. */
readonly property Button control: __control
/*! The padding between the background and the label components. */
padding {
top: 4
left: 4
right: 4 + (control.menu !== null ? Math.round(TextSingleton.implicitHeight * 0.5) : 0)
bottom: 4
}
/*! This defines the background of the button. */
property Component background: Item {
property bool down: control.pressed || (control.checkable && control.checked)
implicitWidth: Math.round(TextSingleton.implicitHeight * 4.5)
implicitHeight: Math.max(25, Math.round(TextSingleton.implicitHeight * 1.2))
Rectangle {
anchors.fill: parent
anchors.bottomMargin: down ? 0 : -1
color: "#10000000"
radius: baserect.radius
}
Rectangle {
id: baserect
gradient: Gradient {
GradientStop {color: down ? "#aaa" : "#fefefe" ; position: 0}
GradientStop {color: down ? "#ccc" : "#e3e3e3" ; position: down ? 0.1: 1}
}
radius: TextSingleton.implicitHeight * 0.16
anchors.fill: parent
border.color: control.activeFocus ? "#47b" : "#999"
Rectangle {
anchors.fill: parent
radius: parent.radius
color: control.activeFocus ? "#47b" : "white"
opacity: control.hovered || control.activeFocus ? 0.1 : 0
Behavior on opacity {NumberAnimation{ duration: 100 }}
}
}
Image {
id: imageItem
visible: control.menu !== null
source: "images/arrow-down.png"
anchors.verticalCenter: parent.verticalCenter
anchors.right: parent.right
anchors.rightMargin: 4
opacity: control.enabled ? 0.6 : 0.5
}
}
/*! This defines the label of the button. */
property Component label: Item {
implicitWidth: row.implicitWidth
implicitHeight: row.implicitHeight
baselineOffset: row.y + text.y + text.baselineOffset
Row {
id: row
anchors.centerIn: parent
spacing: 2
Image {
source: control.iconSource
anchors.verticalCenter: parent.verticalCenter
}
Text {
id: text
renderType: Settings.isMobile ? Text.QtRendering : Text.NativeRendering
anchors.verticalCenter: parent.verticalCenter
text: StyleHelpers.stylizeMnemonics(control.text)
color: SystemPaletteSingleton.buttonText(control.enabled)
}
}
}
/*! \internal */
property Component panel: Item {
anchors.fill: parent
implicitWidth: Math.max(labelLoader.implicitWidth + padding.left + padding.right, backgroundLoader.implicitWidth)
implicitHeight: Math.max(labelLoader.implicitHeight + padding.top + padding.bottom, backgroundLoader.implicitHeight)
baselineOffset: labelLoader.item ? padding.top + labelLoader.item.baselineOffset : 0
Loader {
id: backgroundLoader
anchors.fill: parent
sourceComponent: background
}
Loader {
id: labelLoader
sourceComponent: label
anchors.fill: parent
anchors.leftMargin: padding.left
anchors.topMargin: padding.top
anchors.rightMargin: padding.right
anchors.bottomMargin: padding.bottom
}
}
}
Kind of annoying right? Also if you don't copy all that the alignment of the text will not be quite right.
However if all you want to do is change the colour and boldness of the text there is a simpler if somewhat ugly way:
Button {
text: "<font color=\"red\"><b>Hello</b></font>"
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.