Turn elidedlabel example into a code snippet

The example is 90% boiler plate for subclassing QFrame and providing
a bit of GUI to change the size of the label using sliders. The
interesting bit is a block of 25 lines of code, so turn those into a
snippet and add that to the QTextLayout overview documentation.

Fixes: QTBUG-111011
Pick-to: 6.5
Change-Id: I6e97b2ea47b553c8d998ad185cfac006721ef7ee
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

1 files changed, 0 insertions, 74 deletions

diff --git a/examples/widgets/widgets/elidedlabel/elidedlabel.cpp b/examples/widgets/widgets/elidedlabel/elidedlabel.cpp
deleted file mode 100644
index 68ba133811..0000000000
--- a/examples/widgets/widgets/elidedlabel/elidedlabel.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "elidedlabel.h"
-
-#include <QPainter>
-#include <QSizePolicy>
-#include <QTextLayout>
-
-//! [0]
-ElidedLabel::ElidedLabel(const QString &text, QWidget *parent)
-    : QFrame(parent)
-    , elided(false)
-    , content(text)
-{
-    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
-}
-//! [0]
-
-//! [1]
-void ElidedLabel::setText(const QString &newText)
-{
-    content = newText;
-    update();
-}
-//! [1]
-
-//! [2]
-void ElidedLabel::paintEvent(QPaintEvent *event)
-{
-    QFrame::paintEvent(event);
-
-    QPainter painter(this);
-    QFontMetrics fontMetrics = painter.fontMetrics();
-
-    bool didElide = false;
-    int lineSpacing = fontMetrics.lineSpacing();
-    int y = 0;
-
-    QTextLayout textLayout(content, painter.font());
-    textLayout.beginLayout();
-    forever {
-        QTextLine line = textLayout.createLine();
-
-        if (!line.isValid())
-            break;
-
-        line.setLineWidth(width());
-        int nextLineY = y + lineSpacing;
-
-        if (height() >= nextLineY + lineSpacing) {
-            line.draw(&painter, QPoint(0, y));
-            y = nextLineY;
-            //! [2]
-            //! [3]
-        } else {
-            QString lastLine = content.mid(line.textStart());
-            QString elidedLastLine = fontMetrics.elidedText(lastLine, Qt::ElideRight, width());
-            painter.drawText(QPoint(0, y + fontMetrics.ascent()), elidedLastLine);
-            line = textLayout.createLine();
-            didElide = line.isValid();
-            break;
-        }
-    }
-    textLayout.endLayout();
-    //! [3]
-
-    //! [4]
-    if (didElide != elided) {
-        elided = didElide;
-        emit elisionChanged(didElide);
-    }
-}
-//! [4]