1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "selectabletexteditorwidget.h"
#include <texteditor/basetextdocument.h>
#include <QPainter>
#include <QTextBlock>
namespace DiffEditor {
SelectableTextEditorWidget::SelectableTextEditorWidget(Core::Id id, QWidget *parent)
: BaseTextEditorWidget(parent)
{
setFrameStyle(QFrame::NoFrame);
setupFallBackEditor(id);
}
SelectableTextEditorWidget::~SelectableTextEditorWidget()
{
}
void SelectableTextEditorWidget::innerPaintEvent(QPaintEvent *e)
{
QPainter painter(viewport());
QPointF offset = contentOffset();
QTextBlock firstBlock = firstVisibleBlock();
QTextBlock currentBlock = firstBlock;
while (currentBlock.isValid()) {
if (currentBlock.isVisible()) {
qreal top = blockBoundingGeometry(currentBlock).translated(offset).top();
qreal bottom = top + blockBoundingRect(currentBlock).height();
if (top > e->rect().bottom())
break;
if (bottom >= e->rect().top()) {
const int blockNumber = currentBlock.blockNumber();
paintSelections(painter, m_selections.value(blockNumber),
currentBlock, top);
}
}
currentBlock = currentBlock.next();
}
}
void SelectableTextEditorWidget::paintSelections(QPainter &painter,
const QList<DiffSelection> &selections,
const QTextBlock &block,
int top)
{
QPointF offset = contentOffset();
painter.save();
QTextLayout *layout = block.layout();
QTextLine textLine = layout->lineAt(0);
QRectF lineRect = textLine.naturalTextRect().translated(offset.x(), top);
QRect clipRect = contentsRect();
painter.setClipRect(clipRect);
for (int i = 0; i < selections.count(); i++) {
const DiffSelection &selection = selections.at(i);
if (!selection.format)
continue;
if (selection.start == -1 && selection.end == 0)
continue;
if (selection.start == selection.end && selection.start >= 0)
continue;
painter.save();
const QBrush &brush = selection.format->background();
painter.setPen(brush.color());
painter.setBrush(brush);
const int x1 = selection.start <= 0
? -1
: textLine.cursorToX(selection.start) + offset.x();
const int x2 = selection.end < 0
? clipRect.right()
: textLine.cursorToX(selection.end) + offset.x();
painter.drawRect(QRectF(QPointF(x1, lineRect.top()),
QPointF(x2, lineRect.bottom())));
painter.restore();
}
painter.restore();
}
} // namespace DiffEditor
|
