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comparison src/gui/widgets/elided_label.cc @ 348:6b0768158dcd

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text: redesign almost every widget i.e. Paragraph is now a QLabel, etc etc, some things will probably break, idc
author Paper <paper@paper.us.eu.org>
date Tue, 25 Jun 2024 11:19:54 -0400
parents f31305b9f60a
children
comparison
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347:a0aa8c8c4307 348:6b0768158dcd
1 /* 1
2 * Copyright (C) 2016 The Qt Company Ltd.
3 * Contact: https://www.qt.io/licensing/
4 *
5 * This file is part of the QtCore module of the Qt Toolkit.
6 *
7 * "Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 * * Neither the name of The Qt Company Ltd nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
31 */
32 2
33 #include "gui/widgets/elided_label.h" 3 #include "gui/widgets/elided_label.h"
34 4
35 #include <QPainter> 5 #include <QPainter>
36 #include <QSizePolicy> 6 #include <QSizePolicy>
37 #include <QTextLayout> 7 #include <QTextLayout>
38
39 ElidedLabel::ElidedLabel(const QString& text, QWidget* parent) : QFrame(parent), content(text) {
40 setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
41 }
42
43 void ElidedLabel::SetText(const QString& text) {
44 content = text;
45 update();
46 }
47
48 void ElidedLabel::paintEvent(QPaintEvent* event) {
49 QFrame::paintEvent(event);
50
51 QPainter painter(this);
52 QFontMetrics metrics = painter.fontMetrics();
53
54 const int line_spacing = metrics.lineSpacing();
55 int y = 0;
56
57 QTextLayout text_layout(content, painter.font());
58 text_layout.beginLayout();
59 for (;;) {
60 QTextLine line = text_layout.createLine();
61 if (!line.isValid())
62 break;
63
64 line.setLineWidth(width());
65
66 if (height() >= y + (2 * line_spacing)) {
67 line.draw(&painter, QPoint(0, y));
68 y += line_spacing;
69 } else {
70 QString last_line = content.mid(line.textStart());
71 QString elided_last_line = metrics.elidedText(last_line, Qt::ElideRight, width());
72 painter.drawText(QPoint(0, y + metrics.ascent()), elided_last_line);
73 line = text_layout.createLine();
74 break;
75 }
76 }
77 text_layout.endLayout();
78 }