[frameworks/kwidgetsaddons] src: Split off KColorMimeData copy into separate file, for shared internal usage

Git commit b60b283daed3d0e394b467d0d6b651c4d5ac7cee by Friedrich W. H. Kossebau.
Committed on 24/07/2026 at 20:24.
Pushed by kossebau into branch 'master'.

Split off KColorMimeData copy into separate file, for shared internal usage

M  +2    -0    src/CMakeLists.txt
M  +7    -57   src/kcolorbutton.cpp
A  +67   -0    src/kcolormimedata.cpp     [License: LGPL(v2.0+)]
A  +54   -0    src/kcolormimedata_p.h     [License: LGPL(v2.0+)]

https://invent.kde.org/frameworks/kwidgetsaddons/-/commit/b60b283daed3d0e394b467d0d6b651c4d5ac7cee

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a19ac221..b8ebf8b7 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -45,6 +45,8 @@ target_sources(KF6WidgetsAddons PRIVATE
     kcolorbutton.h
     kcolorcombo.cpp
     kcolorcombo.h
+    kcolormimedata.cpp
+    kcolormimedata_p.h
     kcolumnresizer.cpp
     kcolumnresizer.h
     kcontextualhelpbutton.cpp
diff --git a/src/kcolorbutton.cpp b/src/kcolorbutton.cpp
index 9b7e2d69..5be3142f 100644
--- a/src/kcolorbutton.cpp
+++ b/src/kcolorbutton.cpp
@@ -8,6 +8,8 @@
 
 #include "kcolorbutton.h"
 
+#include "kcolormimedata_p.h"
+
 #include <QApplication>
 #include <QClipboard>
 #include <QColorDialog>
@@ -41,58 +43,6 @@ public:
     void initStyleOption(QStyleOptionButton *opt) const;
 };
 
-/////////////////////////////////////////////////////////////////////
-// Functions duplicated from KColorMimeData
-// Should be kept in sync
-void populateMimeData(QMimeData *mimeData, const QColor &color)
-{
-    mimeData->setColorData(color);
-    mimeData->setText(color.name());
-}
-
-bool canDecode(const QMimeData *mimeData)
-{
-    if (mimeData->hasColor()) {
-        return true;
-    }
-    if (mimeData->hasText()) {
-        const QString colorName = mimeData->text();
-        if ((colorName.length() >= 4) && (colorName[0] == QLatin1Char('#'))) {
-            return true;
-        }
-    }
-    return false;
-}
-
-QColor fromMimeData(const QMimeData *mimeData)
-{
-    if (mimeData->hasColor()) {
-        return mimeData->colorData().value<QColor>();
-    }
-    if (canDecode(mimeData)) {
-        return QColor(mimeData->text());
-    }
-    return QColor();
-}
-
-QDrag *createDrag(const QColor &color, QObject *dragsource)
-{
-    QDrag *drag = new QDrag(dragsource);
-    QMimeData *mime = new QMimeData;
-    populateMimeData(mime, color);
-    drag->setMimeData(mime);
-    QPixmap colorpix(25, 20);
-    colorpix.fill(color);
-    QPainter p(&colorpix);
-    p.setPen(Qt::black);
-    p.drawRect(0, 0, 24, 19);
-    p.end();
-    drag->setPixmap(colorpix);
-    drag->setHotSpot(QPoint(-5, -7));
-    return drag;
-}
-/////////////////////////////////////////////////////////////////////
-
 KColorButtonPrivate::KColorButtonPrivate(KColorButton *qq)
     : q(qq)
 {
@@ -241,12 +191,12 @@ QSize KColorButton::minimumSizeHint() const
 
 void KColorButton::dragEnterEvent(QDragEnterEvent *event)
 {
-    event->setAccepted(canDecode(event->mimeData()) && isEnabled());
+    event->setAccepted(KColorMimeData::canDecode(event->mimeData()) && isEnabled());
 }
 
 void KColorButton::dropEvent(QDropEvent *event)
 {
-    QColor c = fromMimeData(event->mimeData());
+    QColor c = KColorMimeData::fromMimeData(event->mimeData());
     if (c.isValid()) {
         setColor(c);
     }
@@ -258,10 +208,10 @@ void KColorButton::keyPressEvent(QKeyEvent *e)
 
     if (QKeySequence::keyBindings(QKeySequence::Copy).contains(key)) {
         QMimeData *mime = new QMimeData;
-        populateMimeData(mime, color());
+        KColorMimeData::populateMimeData(mime, color());
         QApplication::clipboard()->setMimeData(mime, QClipboard::Clipboard);
     } else if (QKeySequence::keyBindings(QKeySequence::Paste).contains(key)) {
-        QColor color = fromMimeData(QApplication::clipboard()->mimeData(QClipboard::Clipboard));
+        QColor color = KColorMimeData::fromMimeData(QApplication::clipboard()->mimeData(QClipboard::Clipboard));
         setColor(color);
     } else {
         QPushButton::keyPressEvent(e);
@@ -277,7 +227,7 @@ void KColorButton::mousePressEvent(QMouseEvent *e)
 void KColorButton::mouseMoveEvent(QMouseEvent *e)
 {
     if ((e->buttons() & Qt::LeftButton) && (e->pos() - d->mPos).manhattanLength() > QApplication::startDragDistance()) {
-        createDrag(color(), this)->exec(Qt::CopyAction);
+        KColorMimeData::createDrag(color(), this)->exec(Qt::CopyAction);
         setDown(false);
     }
 }
diff --git a/src/kcolormimedata.cpp b/src/kcolormimedata.cpp
new file mode 100644
index 00000000..960bf09e
--- /dev/null
+++ b/src/kcolormimedata.cpp
@@ -0,0 +1,67 @@
+/*
+    This file is part of the KDE libraries
+    SPDX-FileCopyrightText: 1999 Steffen Hansen <[email protected]>
+    SPDX-FileCopyrightText: 2005 Joseph Wenninger <[email protected]>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "kcolormimedata_p.h"
+
+#include <QColor>
+#include <QDrag>
+#include <QMimeData>
+#include <QPainter>
+
+namespace KColorMimeData
+{
+
+void populateMimeData(QMimeData *mimeData, const QColor &color)
+{
+    mimeData->setColorData(color);
+    mimeData->setText(color.name());
+}
+
+bool canDecode(const QMimeData *mimeData)
+{
+    if (mimeData->hasColor()) {
+        return true;
+    }
+    if (mimeData->hasText()) {
+        const QString colorName = mimeData->text();
+        if ((colorName.length() >= 4) && (colorName[0] == QLatin1Char('#'))) {
+            return true;
+        }
+    }
+    return false;
+}
+
+QColor fromMimeData(const QMimeData *mimeData)
+{
+    if (mimeData->hasColor()) {
+        return mimeData->colorData().value<QColor>();
+    }
+    if (canDecode(mimeData)) {
+        return QColor(mimeData->text());
+    }
+    return QColor();
+}
+
+QDrag *createDrag(const QColor &color, QObject *dragsource)
+{
+    QDrag *drag = new QDrag(dragsource);
+    QMimeData *mime = new QMimeData;
+    populateMimeData(mime, color);
+    drag->setMimeData(mime);
+    QPixmap colorpix(25, 20);
+    colorpix.fill(color);
+    QPainter p(&colorpix);
+    p.setPen(Qt::black);
+    p.drawRect(0, 0, 24, 19);
+    p.end();
+    drag->setPixmap(colorpix);
+    drag->setHotSpot(QPoint(-5, -7));
+    return drag;
+}
+
+}
diff --git a/src/kcolormimedata_p.h b/src/kcolormimedata_p.h
new file mode 100644
index 00000000..d5ddb6e2
--- /dev/null
+++ b/src/kcolormimedata_p.h
@@ -0,0 +1,54 @@
+/*
+    This file is part of the KDE libraries
+    SPDX-FileCopyrightText: 1999 Steffen Hansen <[email protected]>
+    SPDX-FileCopyrightText: 2005 Joseph Wenninger <[email protected]>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KCOLORMIMEDATA_P_H
+#define KCOLORMIMEDATA_P_H
+
+class QColor;
+class QDrag;
+class QMimeData;
+class QObject;
+
+/*!
+ * \internal
+ * \namespace KColorMimeData
+ * Functions duplicated from KGuiAddons's KColorMimeData
+ * Should be kept in sync.
+ */
+namespace KColorMimeData
+{
+/*!
+ * Sets the color and text representation fields for the specified color in the mimedata object:
+ * application/x-color and text/plain types are set
+ */
+void populateMimeData(QMimeData *mimeData, const QColor &color);
+
+/*!
+ * Returns true if the MIME data \a mimeData contains a color object.
+ * First checks for application/x-color and if that fails, for a text/plain entry, which
+ * represents a color in the format \#hexnumbers
+ */
+bool canDecode(const QMimeData *mimeData);
+
+/*!
+ * Decodes the MIME data \a mimeData and returns the resulting color.
+ * First tries application/x-color and if that fails, a text/plain entry, which
+ * represents a color in the format \#hexnumbers. If this fails too,
+ * an invalid QColor object is returned, use QColor::isValid() to test it.
+ */
+QColor fromMimeData(const QMimeData *mimeData);
+
+/*!
+ * Creates a color drag object. Either you have to start this drag or delete it
+ * The drag object's mime data has the application/x-color and text/plain type set and a pixmap
+ * filled with the specified color, which is going to be displayed next to the mouse cursor
+ */
+QDrag *createDrag(const QColor &color, QObject *dragsource);
+}
+
+#endif