provide colors Tools trough LatteCore

containment/package/contents/ui/VisibilityManager.qml

@@ -288,7 +288,6 @@ Item{
         property: "drawEffects"
         when: latteView && latteView.effects
         value: LatteCore.WindowSystem.compositingActive
-               && !root.inConfigureAppletsMode
                && (((root.blurEnabled && root.useThemePanel)
                     || (root.blurEnabled && root.forceSolidPanel && LatteCore.WindowSystem.compositingActive))
                    && (!root.inStartup || inForceHiding || inTempHiding))

declarativeimports/core/CMakeLists.txt

@@ -5,6 +5,7 @@ set(lattecoreplugin_SRCS
     environment.cpp
     iconitem.cpp
     quickwindowsystem.cpp
+    tools.cpp
     types.h
 )
 

declarativeimports/core/lattecoreplugin.cpp

@@ -24,6 +24,7 @@
 #include "environment.h"
 #include "iconitem.h"
 #include "quickwindowsystem.h"
+#include "tools.h"
 
 #include <types.h>
 
@@ -37,5 +38,6 @@ void LatteCorePlugin::registerTypes(const char *uri)
     qmlRegisterUncreatableType<Latte::Types>(uri, 0, 2, "Types", "Latte Types uncreatable");
     qmlRegisterType<Latte::IconItem>(uri, 0, 2, "IconItem");
     qmlRegisterSingletonType<Latte::Environment>(uri, 0, 2, "Environment", &Latte::environment_qobject_singletontype_provider);
+    qmlRegisterSingletonType<Latte::Tools>(uri, 0, 2, "Tools", &Latte::tools_qobject_singletontype_provider);
     qmlRegisterSingletonType<Latte::QuickWindowSystem>(uri, 0, 2, "WindowSystem", &Latte::windowsystem_qobject_singletontype_provider);
 }

declarativeimports/core/tools.cpp

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2020  Michail Vourlakos <mvourlakos@gmail.com>
+ *
+ * This file is part of Latte-Dock
+ *
+ * Latte-Dock is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * Latte-Dock is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "tools.h"
+
+// Qt
+#include <QtMath>
+
+namespace Latte{
+
+Tools::Tools(QObject *parent)
+    : QObject(parent)
+{
+}
+
+float Tools::colorBrightness(QColor color)
+{
+    return colorBrightness(color.red(), color.green(), color.blue());
+}
+
+float Tools::colorBrightness(QRgb rgb)
+{
+    return colorBrightness(qRed(rgb), qGreen(rgb), qBlue(rgb));
+}
+
+float Tools::colorBrightness(float r, float g, float b)
+{
+    float brightness = (r * 299 + g * 587 + b * 114) / 1000;
+
+    return brightness;
+}
+
+float Tools::colorLumina(QRgb rgb)
+{
+    float r = (float)(qRed(rgb)) / 255;
+    float g = (float)(qGreen(rgb)) / 255;
+    float b = (float)(qBlue(rgb)) / 255;
+
+    return colorLumina(r, g, b);
+}
+
+float Tools::colorLumina(QColor color)
+{
+    return colorLumina(color.redF(), color.greenF(), color.blueF());
+}
+
+float Tools::colorLumina(float r, float g, float b)
+{
+    // formula for luminance according to:
+    // https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
+
+    float rS = (r <= 0.03928 ? r / 12.92 : qPow(((r + 0.055) / 1.055), 2.4));
+    float gS = (g <= 0.03928 ? g / 12.92 : qPow(((g + 0.055) / 1.055), 2.4));
+    float bS = (b <= 0.03928 ? b / 12.92 : qPow(((b + 0.055) / 1.055), 2.4));
+
+    float luminosity = 0.2126 * rS + 0.7152 * gS + 0.0722 * bS;
+
+    return luminosity;
+}
+
+}

declarativeimports/core/tools.h

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2020  Michail Vourlakos <mvourlakos@gmail.com>
+ *
+ * This file is part of Latte-Dock
+ *
+ * Latte-Dock is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * Latte-Dock is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef LATTECORETOOLS_H
+#define LATTECORETOOLS_H
+
+// Qt
+#include <QObject>
+#include <QColor>
+#include <QQmlEngine>
+#include <QJSEngine>
+
+
+namespace Latte{
+
+class Tools final: public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit Tools(QObject *parent = nullptr);
+
+public slots:
+    Q_INVOKABLE float colorBrightness(QColor color);
+    Q_INVOKABLE float colorLumina(QColor color);
+
+private:
+    float colorBrightness(QRgb rgb);
+    float colorBrightness(float r, float g, float b);
+
+    float colorLumina(QRgb rgb);
+    float colorLumina(float r, float g, float b);
+};
+
+static QObject *tools_qobject_singletontype_provider(QQmlEngine *engine, QJSEngine *scriptEngine)
+{
+    Q_UNUSED(engine)
+    Q_UNUSED(scriptEngine)
+
+// NOTE: QML engine is the owner of this resource
+    return new Tools;
+}
+
+}
+
+#endif

shell/package/contents/configuration/canvas/SettingsOverlay.qml

@@ -24,6 +24,8 @@ import QtQuick.Layouts 1.1
 import org.kde.plasma.core 2.0 as PlasmaCore
 import org.kde.plasma.components 2.0 as PlasmaComponents
 
+import org.kde.latte.core 0.2 as LatteCore
+
 import "controls" as SettingsControls
 import "maxlength" as MaximumLength
 
@@ -46,7 +48,7 @@ Item{
 
     property string tooltip: ""
 
-    readonly property real textColorBrightness: 150// ColorizerTools.colorBrightness(textColor)
+    readonly property real textColorBrightness: LatteCore.Tools.colorBrightness(textColor)
     readonly property bool textColorIsDark: textColorBrightness < 127.5
 
     readonly property color bestContrastedTextColor: {