From e4e1613b0fe741aa6330810560bedf71b25e0e4c Mon Sep 17 00:00:00 2001
From: Filip Fila <filipfila.kde@gmail.com>
Date: Mon, 2 Dec 2019 23:06:58 +0100
Subject: [PATCH] [PC3 ToolButton] Have the label take into account
 complementary color schemes

Summary:
We've ported the SDDM theme to PC3 and now have black labels in PC3 ToolButtons (keyboard and session button).

The SDDM theme uses a complementary color scheme, which is something the PC2 ToolButton respects and turns the labels white.

Therefore I just copy pasted PC2's label color code to its PC3 counterpart.

BUG: 414929
FIXED-IN: 5.66

Test Plan:
```
import QtQuick 2.13
import org.kde.plasma.components 3.0 as PlasmaComponents
import org.kde.plasma.core 2.0 as PlasmaCore

PlasmaCore.ColorScope {
    colorGroup: PlasmaCore.Theme.ComplementaryColorGroup

    Rectangle {
        height: 80
        width: 100
        color: "red"

        PlasmaComponents.ToolButton{
            anchors.fill: parent
            text: "sup"
        }
    }
}
```

The label was white instead of black.

Reviewers: #plasma, ngraham, davidedmundson

Reviewed By: #plasma, ngraham, davidedmundson

Subscribers: mart, davidedmundson, fvogt, kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D25699
---
 src/declarativeimports/plasmacomponents3/ToolButton.qml | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/declarativeimports/plasmacomponents3/ToolButton.qml b/src/declarativeimports/plasmacomponents3/ToolButton.qml
index 84d158f0d..bdf2c9def 100644
--- a/src/declarativeimports/plasmacomponents3/ToolButton.qml
+++ b/src/declarativeimports/plasmacomponents3/ToolButton.qml
@@ -56,13 +56,20 @@ T.ToolButton {
             colorGroup: PlasmaCore.ColorScope.colorGroup
             source: control.icon ? (control.icon.name || control.icon.source) : ""
         }
+        //NOTE: this is used only to check element's existence
+        PlasmaCore.FrameSvgItem {
+            id: buttonsurfaceChecker
+            visible: false
+            imagePath: "widgets/button"
+            prefix: control.flat ? ["toolbutton-hover", "normal"] : "normal"
+        }
         Label {
             Layout.fillWidth: true
             visible: text.length > 0
             text: control.Kirigami.MnemonicData.richTextLabel
             font: control.font
             opacity: enabled || control.highlighted || control.checked ? 1 : 0.4
-            color: theme.buttonTextColor
+            color: (control.hovered || !control.flat) && buttonsurfaceChecker.usedPrefix != "toolbutton-hover" ? theme.buttonTextColor : PlasmaCore.ColorScope.textColor
             horizontalAlignment: Text.AlignHCenter
             verticalAlignment: Text.AlignVCenter
             elide: Text.ElideRight