A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * This file has been copied from Nokia's Qt Examples, with minor modifications
11 * made available under the LGPL version 2.1, as the original file was licensed
12 *
13 ****************************************************************************
14 ****************************************************************************
15**
16** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
17** All rights reserved.
18** Contact: Nokia Corporation (qt-info@nokia.com)
19**
20** This file is part of the examples of the Qt Toolkit.
21**
22** GNU Lesser General Public License Usage
23** Alternatively, this file may be used under the terms of the GNU Lesser
24** General Public License version 2.1 as published by the Free Software
25** Foundation and appearing in the file LICENSE.LGPL included in the
26** packaging of this file. Please review the following information to
27** ensure the GNU Lesser General Public License version 2.1 requirements
28** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
29**
30** In addition, as a special exception, Nokia gives you certain additional
31** rights. These rights are described in the Nokia Qt LGPL Exception
32** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
33**
34****************************************************************************/
35
36#include <QtGui>
37#include <QApplication>
38
39#include "codeeditor.h"
40
41CodeEditor::CodeEditor(QWidget *parent)
42 : QPlainTextEdit(parent), completer(this)
43{
44 lineNumberArea = new LineNumberArea(this);
45
46 connect(this, SIGNAL(blockCountChanged(int)),
47 this, SLOT(updateLineNumberAreaWidth(int)));
48 connect(this, SIGNAL(updateRequest(QRect,int)),
49 this, SLOT(updateLineNumberArea(QRect,int)));
50
51 updateLineNumberAreaWidth(0);
52
53 QObject::connect(this, SIGNAL(cursorPositionChanged()),
54 this, SLOT(cursorMoved()));
55 completer.hide();
56 settings.beginGroup("CodeEditor");
57}
58
59int CodeEditor::lineNumberAreaWidth()
60{
61 int digits = 1;
62 int max = qMax(1, blockCount());
63 while (max >= 10) {
64 max /= 10;
65 ++digits;
66 }
67
68 int space = 3 + fontMetrics().horizontalAdvance(QLatin1Char('9')) * digits;
69
70 return space;
71}
72
73
74void CodeEditor::updateLineNumberAreaWidth(int /* newBlockCount */)
75{
76 setViewportMargins(lineNumberAreaWidth(), 0, 0, 0);
77}
78
79void CodeEditor::updateLineNumberArea(const QRect &rect, int dy)
80{
81 if (dy)
82 lineNumberArea->scroll(0, dy);
83 else
84 lineNumberArea->update(0, rect.y(), lineNumberArea->width(), rect.height());
85
86 if (rect.contains(viewport()->rect()))
87 updateLineNumberAreaWidth(0);
88}
89
90void CodeEditor::cursorMoved()
91{
92 /* Closing the completer if the cursor has moved out of its bounds */
93 if(completer.isVisible())
94 {
95 if(document()->toPlainText().length() > docLength)
96 tagEnd++;
97 else if(document()->toPlainText().length() < docLength)
98 tagEnd--;
99
100 if(textCursor().position() < tagBegin
101 || textCursor().position() > tagEnd)
102 {
103 completer.hide();
104 }
105 }
106}
107
108void CodeEditor::insertTag()
109{
110 /* Clearing the typed tag and inserting one from the completer */
111 QTextCursor at(document());
112 at.setPosition(tagBegin, QTextCursor::MoveAnchor);
113 while(document()->characterAt(at.position()) == QChar('%')
114 || document()->characterAt(at.position()) == '?')
115 at.movePosition(QTextCursor::NextCharacter, QTextCursor::MoveAnchor, 1);
116
117 at.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor,
118 tagEnd - at.position());
119 at.removeSelectedText();
120
121 at.insertText(completer.currentItem()->text(0));
122
123 completer.hide();
124}
125
126void CodeEditor::resizeEvent(QResizeEvent *e)
127{
128 QPlainTextEdit::resizeEvent(e);
129
130 QRect cr = contentsRect();
131 lineNumberArea->setGeometry(QRect(cr.left(), cr.top(),
132 lineNumberAreaWidth(), cr.height()));
133}
134
135void CodeEditor::keyPressEvent(QKeyEvent *event)
136{
137
138 if(!settings.value("completeSyntax", true).toBool())
139 {
140 QPlainTextEdit::keyPressEvent(event);
141 return;
142 }
143
144 if(completer.isVisible())
145 {
146 /* Handling the completer */
147 if(event->key() == Qt::Key_Up)
148 {
149 /* Up/down arrow presses get sent right along to the completer
150 * to navigate through the list
151 */
152 if(completer.currentIndex().row() > 0)
153 QApplication::sendEvent(&completer, event);
154 }
155 else if(event->key() == Qt::Key_Down)
156 {
157 if(completer.currentIndex().row()
158 < completer.topLevelItemCount() - 1)
159 QApplication::sendEvent(&completer, event);
160 }
161 else if(event->key() == Qt::Key_Backspace
162 || event->key() == Qt::Key_Delete)
163 {
164 docLength = document()->toPlainText().length();
165 QPlainTextEdit::keyPressEvent(event);
166
167 QString filterText;
168
169 for(int i = tagBegin; i < tagEnd; i++)
170 {
171 QChar c = document()->characterAt(i);
172 if(c != '%' && c != '?')
173 filterText.append(c);
174 }
175
176 completer.filter(filterText);
177 }
178 else if(event->key() == Qt::Key_Escape)
179 {
180 /* Escape hides the completer */
181 completer.hide();
182 QPlainTextEdit::keyPressEvent(event);
183 }
184 else if(event->key() == Qt::Key_Return)
185 {
186 /* The enter key inserts the currently selected tag */
187 insertTag();
188 }
189 else if(event->key() == Qt::Key_Question)
190 {
191 /* The question mark doesn't filter the list */
192 docLength = document()->toPlainText().length();
193 QPlainTextEdit::keyPressEvent(event);
194 }
195 else if(event->key() == Qt::Key_Left
196 || event->key() == Qt::Key_Right)
197 {
198 /* Left and right keys shouldn't affect tagEnd */
199 QPlainTextEdit::keyPressEvent(event);
200 }
201 else
202 {
203 /* Otherwise, we have to filter the list */
204 docLength = document()->toPlainText().length();
205 QPlainTextEdit::keyPressEvent(event);
206
207 QString filterText;
208
209 for(int i = tagBegin; i < tagEnd; i++)
210 {
211 QChar c = document()->characterAt(i);
212 if(c != '%' && c != '?')
213 filterText.append(c);
214 }
215
216 completer.filter(filterText);
217 }
218 }
219 else
220 {
221 /* Deciding whether to show the completer */
222 QPlainTextEdit::keyPressEvent(event);
223 if(event->key() == Qt::Key_Percent)
224 {
225 tagBegin = textCursor().position();
226 tagEnd = textCursor().position();
227 completer.filter("");
228 completer.move(cursorRect().left(), cursorRect().bottom());
229 if(completer.frameGeometry().right() > width())
230 completer.move(width() - completer.width(), completer.y());
231 if(completer.frameGeometry().bottom() > height())
232 completer.move(completer.x(),
233 cursorRect().top() - completer.height());
234 completer.show();
235 }
236 }
237
238}
239
240void CodeEditor::lineNumberAreaPaintEvent(QPaintEvent *event)
241{
242 QPainter painter(lineNumberArea);
243 painter.fillRect(event->rect(), Qt::lightGray);
244
245 QTextBlock block = firstVisibleBlock();
246 int blockNumber = block.blockNumber();
247 int top = (int) blockBoundingGeometry(block).translated(contentOffset()).top();
248 int bottom = top + (int) blockBoundingRect(block).height();
249
250 while (block.isValid() && top <= event->rect().bottom()) {
251 if (block.isVisible() && bottom >= event->rect().top()) {
252 QString number = QString::number(blockNumber + 1);
253 /* Drawing an error circle if necessary */
254 if(errors.contains(blockNumber + 1))
255 {
256 painter.fillRect(QRect(0, top, lineNumberArea->width(),
257 fontMetrics().height()), errorColor);
258 }
259 painter.setPen(Qt::black);
260 painter.drawText(0, top, lineNumberArea->width(),
261 fontMetrics().height(), Qt::AlignRight, number);
262 }
263
264 block = block.next();
265 top = bottom;
266 bottom = top + (int) blockBoundingRect(block).height();
267 ++blockNumber;
268 }
269}