Support copy-pasting foreground images within same document

When using a texture for foreground color in text and copy-pasting
the text inside the same QTextEdit, the formatting would disappear.

Fixing this in a general way would require implementing some
other carrier format in the mime data than HTML, such as e.g ODF,
but it can quite easily be fixed for the case where the data
is pasted in the same document, or even different documents
as long as they have a reference to the image in the formats.

[ChangeLog][QtWidgets][QTextEdit] Added support for copy-pasting
foreground brushes with textures within same document.

Task-number: QTBUG-75931
Change-Id: I8b39dce289c64eea39e25cb8eb207e2534bcd2eb
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
 
 

1 files changed, 31 insertions, 0 deletions

diff --git a/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp b/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp
index 3669935823..81682dc027 100644
--- a/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp
+++ b/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp
@@ -160,6 +160,7 @@ private slots:
     void selectionChanged();
 #ifndef QT_NO_CLIPBOARD
     void copyPasteBackgroundImage();
+    void copyPasteForegroundImage();
 #endif
     void setText();
     void cursorRect();
@@ -1904,6 +1905,36 @@ void tst_QTextEdit::copyPasteBackgroundImage()
             ba.texture().cacheKey() == bb.texture().cacheKey());
     QFile::remove(QLatin1String("foo.png"));
 }
+
+void tst_QTextEdit::copyPasteForegroundImage()
+{
+    ed->clear();
+
+    QPixmap pix(20, 20);
+    pix.fill(Qt::blue);
+
+    QTextCharFormat fmt;
+    {
+        QBrush textureBrush;
+        {
+            textureBrush.setTexture(pix);
+        }
+        textureBrush.setStyle(Qt::TexturePattern);
+        fmt.setForeground(textureBrush);
+    }
+    ed->textCursor().insertText("Foobar", fmt);
+
+    ed->moveCursor(QTextCursor::Start);
+    ed->moveCursor(QTextCursor::End, QTextCursor::KeepAnchor);
+
+    ed->copy();
+    ed->clear();
+    ed->paste();
+
+    QBrush brush = ed->textCursor().charFormat().foreground();
+    QCOMPARE(brush.style(), Qt::TexturePattern);
+    QCOMPARE(brush.texture().cacheKey(), pix.cacheKey());
+}
 #endif
 
 void tst_QTextEdit::setText()