Mercurial > minori
annotate src/gui/widgets/elided_label.cc @ 291:9a88e1725fd2
*: refactor lots of stuff
I forgot to put this into different commits, oops!
anyway, it doesn't really matter *that* much since this is an
unfinished hobby project anyway. once it starts getting stable
commit history will be more important, but for now it's not
that big of a deal
| author | Paper <paper@paper.us.eu.org> |
|---|---|
| date | Sun, 12 May 2024 16:31:07 -0400 |
| parents | f31305b9f60a |
| children | 6b0768158dcd |
| rev | line source |
|---|---|
| 253 | 1 /* |
| 258 | 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 */ | |
| 253 | 32 |
| 33 #include "gui/widgets/elided_label.h" | |
| 34 | |
| 35 #include <QPainter> | |
| 36 #include <QSizePolicy> | |
| 37 #include <QTextLayout> | |
| 38 | |
| 258 | 39 ElidedLabel::ElidedLabel(const QString& text, QWidget* parent) : QFrame(parent), content(text) { |
| 253 | 40 setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred); |
| 41 } | |
| 42 | |
| 43 void ElidedLabel::SetText(const QString& text) { | |
| 44 content = text; | |
| 45 update(); | |
| 46 } | |
| 47 | |
| 258 | 48 void ElidedLabel::paintEvent(QPaintEvent* event) { |
| 253 | 49 QFrame::paintEvent(event); |
| 50 | |
| 51 QPainter painter(this); | |
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52 QFontMetrics metrics = painter.fontMetrics(); |
| 253 | 53 |
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54 const int line_spacing = metrics.lineSpacing(); |
| 253 | 55 int y = 0; |
| 56 | |
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57 QTextLayout text_layout(content, painter.font()); |
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58 text_layout.beginLayout(); |
| 253 | 59 for (;;) { |
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60 QTextLine line = text_layout.createLine(); |
| 253 | 61 if (!line.isValid()) |
| 62 break; | |
| 63 | |
| 64 line.setLineWidth(width()); | |
| 65 | |
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66 if (height() >= y + (2 * line_spacing)) { |
| 253 | 67 line.draw(&painter, QPoint(0, y)); |
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68 y += line_spacing; |
| 253 | 69 } else { |
| 70 QString last_line = content.mid(line.textStart()); | |
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71 QString elided_last_line = metrics.elidedText(last_line, Qt::ElideRight, width()); |
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72 painter.drawText(QPoint(0, y + metrics.ascent()), elided_last_line); |
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73 line = text_layout.createLine(); |
| 253 | 74 break; |
| 75 } | |
| 76 } | |
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77 text_layout.endLayout(); |
| 253 | 78 } |