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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
Dialog {
id: colorDialog
title: qsTr("Color Picker Dialog")
modal: false
anchors.centerIn: parent
objectName: "colorDialog"
property bool handled: false
property color color
signal selectedColor(var color)
signal rejected()
function accept() {
handled = true;
selectedColor(colorDialog.color)
close();
}
function reject() {
handled = true;
rejected();
close();
}
// Handle the case where users simply closes or clicks out of the dialog.
onVisibleChanged: {
if (!visible && !handled) {
handled = true;
rejected();
} else {
handled = false;
}
}
function selectColorFromPalette(paletteColor) {
colorDialog.color = paletteColor;
}
function zeroPadding(text, length = 2) {
var textLength = text.length;
if (textLength >= length) {
return text;
}
for (var i = 0; i < length - textLength; i++) {
text = "0" + text;
}
return text;
}
function calculateRGBA() {
var rgbArray = [colorDialog.color.r, colorDialog.color.g, colorDialog.color.b]
if (colorDialog.color.a != 1) {
rgbArray.push(colorDialog.color.a);
}
for (var i = 0; i < rgbArray.length; i++) {
rgbArray[i] = Number(Math.round(rgbArray[i] * 255)).toString(16);
rgbArray[i] = zeroPadding(rgbArray[i]);
}
return "#" + rgbArray.join("");
}
function isNaNOrUndefined(value) {
return value == null || value == undefined || Number.isNaN(value);
}
function parseColorText(colorText) {
if (colorText[0] == '#') {
colorText = colorText.substring(1);
}
if (!(colorText.length == 6 || colorText.length == 8)) {
return undefined;
}
var rgbaValues = [parseInt("0x" + colorText.substring(0,2)),
parseInt("0x" + colorText.substring(2,4)),
parseInt("0x" + colorText.substring(4,6)),
parseInt("0x" + (colorText.length > 6 ? colorText.substring(6,8) : "FF"))]
for (var i = 0; i < rgbaValues.length; i++) {
if (isNaNOrUndefined(rgbaValues[i])) {
return undefined;
}
rgbaValues[i] = rgbaValues[i] / 255;
}
return Qt.rgba(rgbaValues[0], rgbaValues[1], rgbaValues[2], rgbaValues[3]);
}
ListModel {
id: colorList
ListElement { rectangleColor: "red" }
ListElement { rectangleColor: "orangered" }
ListElement { rectangleColor: "orange" }
ListElement { rectangleColor: "gold" }
ListElement { rectangleColor: "yellow" }
ListElement { rectangleColor: "yellowgreen" }
ListElement { rectangleColor: "green" }
ListElement { rectangleColor: "lightskyblue" }
ListElement { rectangleColor: "blue" }
ListElement { rectangleColor: "blueviolet" }
ListElement { rectangleColor: "violet" }
ListElement { rectangleColor: "mediumvioletred" }
ListElement { rectangleColor: "black" }
ListElement { rectangleColor: "white" }
}
contentItem: GridLayout {
id: grid
columns: 7
rows: 5
Repeater {
model: colorList
delegate: Rectangle {
width: 50
height: 50
color: rectangleColor
border.color: "black"
border.width: 1
MouseArea {
anchors.fill: parent
onClicked: selectColorFromPalette(parent.color)
}
}
}
ColumnLayout {
id: colorTools
Layout.columnSpan: 4
Layout.rowSpan: 2
Layout.alignment: Qt.AlignHCenter | Qt.AlignVCenter
Rectangle {
height: 100
width: 200
border.color: "black"
border.width: 1
Binding on color {
when: colorDialog.color
value: colorDialog.color
}
}
TextField {
id: colorTextField
width: 100
selectByMouse: true
Layout.alignment: Qt.AlignHCenter
Binding on text {
when: colorDialog.color
value: calculateRGBA()
delayed: true
}
onTextEdited: {
var parsedColor = parseColorText(colorTextField.text);
if (parsedColor != undefined) {
colorDialog.color = parsedColor;
}
}
MouseArea {
id: colorTextFieldMouseArea
anchors.fill: parent
acceptedButtons: Qt.RightButton
onClicked: colorTextFieldContextMenu.open()
}
Menu {
id: colorTextFieldContextMenu
x: colorTextFieldMouseArea.mouseX
y: colorTextFieldMouseArea.mouseY
MenuItem {
text: qsTr("Copy color")
onTriggered: {
colorTextField.selectAll();
colorTextField.copy();
colorTextField.deselect();
}
}
MenuSeparator {}
MenuItem {
text: qsTr("Paste")
onTriggered: {
colorTextField.selectAll();
colorTextField.paste();
}
enabled: colorTextField.canPaste
}
}
}
}
ListModel {
id: sliderBoxElements
ListElement { labelText: "Red value"; colorChannel: 0 }
ListElement { labelText: "Green value"; colorChannel: 1 }
ListElement { labelText: "Blue value"; colorChannel: 2 }
ListElement { labelText: "Alpha value"; colorChannel: 3 }
}
ColumnLayout {
id: sliderBox
Layout.columnSpan: 3
Layout.rowSpan: 2
Layout.fillWidth: true
Layout.fillHeight: true
Repeater {
model: sliderBoxElements
delegate: ColumnLayout {
Label {
text: labelText
}
Slider {
id: colorSlider
property int channel: colorChannel
from: 0
to: 255
stepSize: 1
value: {
if (colorSlider.channel == 0)
return colorDialog.color.r * 255;
else if (colorSlider.channel == 1)
return colorDialog.color.g * 255;
else if (colorSlider.channel == 2)
return colorDialog.color.b * 255;
else if (colorSlider.channel == 3)
return colorDialog.color.a * 255;
}
Connections {
function onMoved() {
var redChannelValue = colorDialog.color.r;
var greenChannelValue = colorDialog.color.g;
var blueChannelValue = colorDialog.color.b;
var alphaChannelValue = colorDialog.color.a;
if (colorSlider.channel == 0)
redChannelValue = colorSlider.value / 255;
else if (colorSlider.channel == 1)
greenChannelValue = colorSlider.value / 255;
else if (colorSlider.channel == 2)
blueChannelValue = colorSlider.value / 255;
else if (colorSlider.channel == 3)
alphaChannelValue = colorSlider.value / 255;
colorDialog.color = Qt.rgba(redChannelValue, greenChannelValue, blueChannelValue, alphaChannelValue);
}
}
}
}
}
}
DialogButtonBox {
id: dialogButtonBox
Layout.columnSpan: 7
Layout.alignment: Qt.AlignRight
Button {
text: qsTr("Apply")
onClicked: accept()
}
Button {
text: qsTr("Cancel")
onClicked: reject()
}
}
}
}
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