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6 | ** This file is part of the Qt Linguist of the Qt Toolkit. |
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8 | ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
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27 | ****************************************************************************/ |
28 | |
29 | #include "sourcecodeview.h" |
30 | |
31 | #include <QtCore/QFile> |
32 | #include <QtCore/QFileInfo> |
33 | #include <QtCore/QTextStream> |
34 | |
35 | #include <QtGui/QTextCharFormat> |
36 | #include <QtGui/QTextBlock> |
37 | #include <QtGui/QTextCursor> |
38 | |
39 | QT_BEGIN_NAMESPACE |
40 | |
41 | SourceCodeView::SourceCodeView(QWidget *parent) |
42 | : QPlainTextEdit(parent), |
43 | m_isActive(true), |
44 | m_lineNumToLoad(0) |
45 | { |
46 | setReadOnly(true); |
47 | } |
48 | |
49 | void SourceCodeView::setSourceContext(const QString &fileName, const int lineNum) |
50 | { |
51 | m_fileToLoad.clear(); |
52 | setToolTip(fileName); |
53 | |
54 | if (fileName.isEmpty()) { |
55 | clear(); |
56 | m_currentFileName.clear(); |
57 | appendHtml(html: tr(s: "<i>Source code not available</i>" )); |
58 | return; |
59 | } |
60 | |
61 | if (m_isActive) { |
62 | showSourceCode(fileName, lineNum); |
63 | } else { |
64 | m_fileToLoad = fileName; |
65 | m_lineNumToLoad = lineNum; |
66 | } |
67 | } |
68 | |
69 | void SourceCodeView::setActivated(bool activated) |
70 | { |
71 | m_isActive = activated; |
72 | if (activated && !m_fileToLoad.isEmpty()) { |
73 | showSourceCode(fileName: m_fileToLoad, lineNum: m_lineNumToLoad); |
74 | m_fileToLoad.clear(); |
75 | } |
76 | } |
77 | |
78 | void SourceCodeView::showSourceCode(const QString &absFileName, const int lineNum) |
79 | { |
80 | QString fileText = fileHash.value(akey: absFileName); |
81 | |
82 | if (fileText.isNull()) { // File not in hash |
83 | m_currentFileName.clear(); |
84 | |
85 | // Assume fileName is relative to directory |
86 | QFile file(absFileName); |
87 | |
88 | if (!file.exists()) { |
89 | clear(); |
90 | appendHtml(html: tr(s: "<i>File %1 not available</i>" ).arg(a: absFileName)); |
91 | return; |
92 | } |
93 | if (!file.open(flags: QIODevice::ReadOnly | QIODevice::Text)) { |
94 | clear(); |
95 | appendHtml(html: tr(s: "<i>File %1 not readable</i>" ).arg(a: absFileName)); |
96 | return; |
97 | } |
98 | fileText = QString::fromUtf8(str: file.readAll()); |
99 | fileHash.insert(akey: absFileName, avalue: fileText); |
100 | } |
101 | |
102 | |
103 | if (m_currentFileName != absFileName) { |
104 | setPlainText(fileText); |
105 | m_currentFileName = absFileName; |
106 | } |
107 | |
108 | QTextCursor cursor = textCursor(); |
109 | cursor.setPosition(pos: document()->findBlockByNumber(blockNumber: lineNum - 1).position()); |
110 | setTextCursor(cursor); |
111 | centerCursor(); |
112 | cursor.movePosition(op: QTextCursor::EndOfBlock, QTextCursor::KeepAnchor); |
113 | cursor.movePosition(op: QTextCursor::Right, QTextCursor::KeepAnchor); |
114 | |
115 | QTextEdit::ExtraSelection selectedLine; |
116 | selectedLine.cursor = cursor; |
117 | |
118 | // Define custom color for line selection |
119 | const QColor fg = palette().color(cr: QPalette::Highlight); |
120 | const QColor bg = palette().color(cr: QPalette::Base); |
121 | QColor col; |
122 | const qreal ratio = 0.25; |
123 | col.setRedF(fg.redF() * ratio + bg.redF() * (1 - ratio)); |
124 | col.setGreenF(fg.greenF() * ratio + bg.greenF() * (1 - ratio)); |
125 | col.setBlueF(fg.blueF() * ratio + bg.blueF() * (1 - ratio)); |
126 | |
127 | selectedLine.format.setBackground(col); |
128 | selectedLine.format.setProperty(propertyId: QTextFormat::FullWidthSelection, value: true); |
129 | setExtraSelections(QList<QTextEdit::ExtraSelection>() << selectedLine); |
130 | } |
131 | |
132 | QT_END_NAMESPACE |
133 | |