1 | // SPDX-FileCopyrightText: 2023 UnionTech Software Technology Co., Ltd. |
2 | // |
3 | // SPDX-License-Identifier: GPL-3.0-or-later |
4 | |
5 | #include "displayitemdelegate.h" |
6 | |
7 | #include <QPainter> |
8 | #include <QDebug> |
9 | #include <QApplication> |
10 | #include <QFileInfo> |
11 | |
12 | DisplayItemDelegate::DisplayItemDelegate(QObject *parent) |
13 | : QStyledItemDelegate (parent) |
14 | { |
15 | |
16 | } |
17 | |
18 | void DisplayItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, |
19 | const QModelIndex &index) const |
20 | { |
21 | if (index.isValid()) { |
22 | int textTopAlign = Qt::AlignmentFlag::AlignTop; |
23 | int textBottomAlign = Qt::AlignmentFlag::AlignBottom; |
24 | QString filePath = index.data(Qt::DisplayRole).toString(); |
25 | QString fileName = QFileInfo(filePath).fileName(); |
26 | QStyleOptionViewItem drawStyle(option); |
27 | initStyleOption(&drawStyle, index); |
28 | drawStyle.text = "" ; //清空文本绘制 |
29 | QStyle *pStyle = drawStyle.widget ? drawStyle.widget->style() : QApplication::style(); |
30 | pStyle->drawControl(QStyle::CE_ItemViewItem, &drawStyle, painter, drawStyle.widget); |
31 | |
32 | |
33 | QRect iconRect = pStyle->itemPixmapRect(drawStyle.rect, drawStyle.displayAlignment, |
34 | drawStyle.icon.pixmap(drawStyle.rect.height())); |
35 | QRect titleTextRect = pStyle->itemTextRect(drawStyle.fontMetrics, drawStyle.rect, textTopAlign, true, fileName) |
36 | .adjusted(iconRect.width(), 0, 0, 0); |
37 | titleTextRect.setWidth(option.rect.width()); |
38 | |
39 | QString eliedFileName = drawStyle.fontMetrics.elidedText(fileName, Qt::ElideRight, titleTextRect.width()); |
40 | pStyle->drawItemText(painter, titleTextRect, drawStyle.displayAlignment, drawStyle.palette, true, eliedFileName); |
41 | |
42 | painter->save(); |
43 | |
44 | //缩小字体 |
45 | QFont nativeFont(drawStyle.font); |
46 | nativeFont.setPointSize(drawStyle.font.pointSize() - 1); |
47 | nativeFont.setItalic(true); |
48 | painter->setFont(nativeFont); |
49 | |
50 | //计算绘制坐标 |
51 | QRect nativeTextRect = pStyle->itemTextRect(QFontMetrics(nativeFont), drawStyle.rect, textBottomAlign, true, filePath) |
52 | .adjusted(iconRect.width(), 0, 0, 0); |
53 | nativeTextRect.setWidth(option.rect.width()); |
54 | |
55 | QString eliedFilePath = drawStyle.fontMetrics.elidedText(filePath, Qt::ElideRight, nativeTextRect.width()); |
56 | painter->drawText(nativeTextRect, textBottomAlign, eliedFilePath); |
57 | painter->restore(); |
58 | } else { |
59 | return QStyledItemDelegate::paint(painter, option, index); |
60 | } |
61 | } |
62 | |
63 | QSize DisplayItemDelegate::sizeHint(const QStyleOptionViewItem &option, |
64 | const QModelIndex &index) const |
65 | { |
66 | if (index.isValid()) { |
67 | QSize size = index.data(Qt::SizeHintRole).toSize(); |
68 | if (size.isValid()) { |
69 | return size; |
70 | } else { |
71 | return {option.rect.width(), option.fontMetrics.height() * 2}; |
72 | } |
73 | } |
74 | return QStyledItemDelegate::sizeHint(option, index); |
75 | } |
76 | |