1 /***************************************************************************
2 * Copyright (C) 2008 by Simon Andreas Eugster (simon.eu@gmail.com) *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
8 ***************************************************************************/
10 #include "unicodedialog.h"
12 #include <QWheelEvent>
16 const int MAX_LENGTH_HEX = 4;
17 const uint MAX_UNICODE_V1 = 65535;
20 UnicodeDialog::UnicodeDialog(InputMethod inputMeth, QWidget *parent)
23 setCaption( i18n("Details") );
24 setButtons( Ok|Cancel );
25 mUnicodeWidget = new UnicodeWidget(inputMeth);
26 connect(mUnicodeWidget, SIGNAL(charSelected(QString)), SIGNAL(charSelected(QString)));
27 setMainWidget(mUnicodeWidget);
28 connect(this, SIGNAL(okClicked()), SLOT(slotAccept()));
31 UnicodeDialog::~UnicodeDialog()
35 void UnicodeDialog::slotAccept()
37 mUnicodeWidget->slotReturnPressed();
42 /// CONSTRUCTORS/DECONSTRUCTORS
44 UnicodeWidget::UnicodeWidget(UnicodeDialog::InputMethod inputMeth, QWidget *parent)
46 inputMethod(inputMeth),
52 connect(unicodeNumber, SIGNAL(textChanged(QString)), this, SLOT(slotTextChanged(QString)));
53 connect(unicodeNumber, SIGNAL(returnPressed()), this, SLOT(slotReturnPressed()));
54 connect(arrowUp, SIGNAL(clicked()), this, SLOT(slotPrevUnicode()));
55 connect(arrowDown, SIGNAL(clicked()), this, SLOT(slotNextUnicode()));
57 switch (inputMethod) {
58 case UnicodeDialog::InputHex:
59 unicodeNumber->setMaxLength(MAX_LENGTH_HEX);
62 case UnicodeDialog::InputDec:
66 arrowUp->setShortcut(Qt::Key_Up);
67 arrowDown->setShortcut(Qt::Key_Down);
68 unicode_link->setText(i18n("Information about unicode characters: <a href=\"http://decodeunicode.org\">http://decodeunicode.org</a>"));
69 arrowUp->setToolTip(i18n("Previous Unicode character (Arrow Up)"));
70 arrowDown->setToolTip(i18n("Next Unicode character (Arrow Down)"));
71 unicodeNumber->setToolTip(i18n("Enter your Unicode number here. Allowed characters: [0-9] and [a-f]."));
72 unicodeNumber->selectAll(); // Selection will be reset by setToolTip and similar, so set it here
75 UnicodeWidget::~UnicodeWidget()
82 void UnicodeWidget::showLastUnicode()
84 unicodeNumber->setText(m_lastUnicodeNumber);
85 unicodeNumber->selectAll();
86 slotTextChanged(m_lastUnicodeNumber);
89 bool UnicodeWidget::controlCharacter(const QString &text)
91 bool isControlCharacter = false;
92 QString t = text.toLower();
94 switch (inputMethod) {
95 case UnicodeDialog::InputHex:
97 || (t.length() == 1 && !(t == "9" || t == "a" || t == "d"))
98 || (t.length() == 2 && t.at(0) == QChar('1'))) {
99 isControlCharacter = true;
103 case UnicodeDialog::InputDec:
105 isControlCharacter = controlCharacter(text.toUInt(&ok, 16));
109 return isControlCharacter;
112 bool UnicodeWidget::controlCharacter(uint value)
114 bool isControlCharacter = false;
116 if (value < 32 && !(value == 9 || value == 10 || value == 13)) {
117 isControlCharacter = true;
119 return isControlCharacter;
123 QString UnicodeWidget::trimmedUnicodeNumber(QString text)
125 while (!text.isEmpty() && text.at(0) == QChar('0')) {
126 text = text.remove(0, 1);
131 QString UnicodeWidget::unicodeInfo(const QString &unicode)
133 QString infoText(i18n("<small>(no character selected)</small>"));
134 if (unicode.length() == 0) return infoText;
136 QString u = trimmedUnicodeNumber(unicode).toLower();
138 if (controlCharacter(u)) {
139 infoText = i18n("Control character. Cannot be inserted/printed. See <a href=\"http://en.wikipedia.org/wiki/Control_character\">Wikipedia:Control_character</a>");
140 } else if (u == "a") {
141 infoText = i18n("Line Feed (newline character, \\\\n)");
142 } else if (u == "20") {
143 infoText = i18n("Standard space character. (Other space characters: U+00a0, U+2000–200b, U+202f)");
144 } else if (u == "a0") {
145 infoText = i18n("No-break space. &nbsp; in HTML. See U+2009 and U+0020.");
146 } else if (u == "ab" || u == "bb" || u == "2039" || u == "203a") {
147 infoText = i18n("<p><strong>«</strong> (u+00ab, <code>&lfquo;</code> in HTML) and <strong>»</strong> (u+00bb, <code>&rfquo;</code> in HTML) are called Guillemets or angle quotes. Usage in different countries: France (with non-breaking Space 0x00a0), Switzerland, Germany, Finland and Sweden.</p><p><strong>‹</strong> and <strong>›</strong> (U+2039/203a, <code>&lsaquo;/&rsaquo;</code>) are their single quote equivalents.</p><p>See <a href=\"http://en.wikipedia.org/wiki/Guillemets\">Wikipedia:Guillemets</a></p>");
148 } else if (u == "2002") {
149 infoText = i18n("En Space (width of an n)");
150 } else if (u == "2003") {
151 infoText = i18n("Em Space (width of an m)");
152 } else if (u == "2004") {
153 infoText = i18n("Three-Per-Em Space. Width: 1/3 of one <em>em</em>");
154 } else if (u == "2005") {
155 infoText = i18n("Four-Per-Em Space. Width: 1/4 of one <em>em</em>");
156 } else if (u == "2006") {
157 infoText = i18n("Six-Per-Em Space. Width: 1/6 of one <em>em</em>");
158 } else if (u == "2007") {
159 infoText = i18n("Figure space (non-breaking). Width of a digit if digits have fixed width in this font.");
160 } else if (u == "2008") {
161 infoText = i18n("Punctuation Space. Width the same as between a punctuation character and the next character.");
162 } else if (u == "2009") {
163 infoText = i18n("Thin space, in HTML also &thinsp;. See U+202f and <a href=\"http://en.wikipedia.org/wiki/Space_(punctuation)\">Wikipedia:Space_(punctuation)</a>");
164 } else if (u == "200a") {
165 infoText = i18n("Hair Space. Thinner than U+2009.");
166 } else if (u == "2019") {
167 infoText = i18n("Punctuation Apostrophe. Should be used instead of U+0027. See <a href=\"http://en.wikipedia.org/wiki/Apostrophe\">Wikipedia:Apostrophe</a>");
168 } else if (u == "2013") {
169 infoText = i18n("<p>An en Dash (dash of the width of an n).</p><p>Usage examples: In English language for value ranges (1878–1903), for relationships/connections (Zurich–Dublin). In the German language it is also used (with spaces!) for showing thoughts: “Es war – wie immer in den Ferien – ein regnerischer Tag.</p> <p>See <a href=\"http://en.wikipedia.org/wiki/Dash\">Wikipedia:Dash</a></p>");
170 } else if (u == "2014") {
171 infoText = i18n("<p>An em Dash (dash of the width of an m).</p><p>Usage examples: In English language to mark—like here—thoughts. Traditionally without spaces. </p><p>See <a href=\"http://en.wikipedia.org/wiki/Dash\">Wikipedia:Dash</a></p>");
172 } else if (u == "202f") {
173 infoText = i18n("<p>Narrow no-break space. Has the same width as U+2009.</p><p>Usage: For units (spaces are marked with U+2423, ␣): 230␣V, −21␣°C, 50␣lb, <em>but</em> 90° (no space). In German for abbreviations (like: i. d. R. instead of i. d. R. with U+00a0).</p><p>See <a href=\"http://de.wikipedia.org/wiki/Schmales_Leerzeichen\">Wikipedia:de:Schmales_Leerzeichen</a></p>");
174 } else if (u == "2026") {
175 infoText = i18n("Ellipsis: If text has been left o… See <a href=\"http://en.wikipedia.org/wiki/Ellipsis\">Wikipedia:Ellipsis</a>");
176 } else if (u == "2212") {
177 infoText = i18n("Minus sign. For numbers: −42");
178 } else if (u == "2423") {
179 infoText = i18n("Open box; stands for a space.");
180 } else if (u == "2669") {
181 infoText = i18n("Quarter note (Am.) or crochet (Brit.). See <a href=\"http://en.wikipedia.org/wiki/Quarter_note\">Wikipedia:Quarter_note</a>");
182 } else if (u == "266a" || u == "266b") {
183 infoText = i18n("Eighth note (Am.) or quaver (Brit.). Half as long as a quarter note (U+2669). See <a href=\"http://en.wikipedia.org/wiki/Eighth_note\">Wikipedia:Eighth_note</a>");
184 } else if (u == "266c") {
185 infoText = i18n("Sixteenth note (Am.) or semiquaver (Brit.). Half as long as an eighth note (U+266a). See <a href=\"http://en.wikipedia.org/wiki/Sixteenth_note\">Wikipedia:Sixteenth_note</a>");
186 } else if (u == "1D162") {
187 infoText = i18n("Thirty-second note (Am.) or demisemiquaver (Brit.). Half as long as a sixteenth note (U+266b). See <a href=\"http://en.wikipedia.org/wiki/Thirty-second_note\">Wikipedia:Thirty-second_note</a>");
189 infoText = i18n("<small>No additional information available for this character.</small>");
195 QString UnicodeWidget::validateText(const QString &text)
197 QRegExp regex("([0-9]|[a-f])", Qt::CaseInsensitive, QRegExp::RegExp2);
201 switch (inputMethod) {
202 case UnicodeDialog::InputHex:
203 // Remove all characters we don't want
204 while ((pos = regex.indexIn(text, pos)) != -1) {
205 newText += regex.cap(1);
210 case UnicodeDialog::InputDec:
218 void UnicodeWidget::updateOverviewChars(uint unicode)
224 for (i = 1; i <= 4; ++i) {
225 if (unicode > i && !controlCharacter(unicode - i)) {
227 left = QChar(unicode - i) + left;
231 for (i = 1; i <= 8; ++i) {
232 if (unicode + i <= MAX_UNICODE_V1 && !controlCharacter(unicode + i)) {
233 right += QChar(unicode + i);
238 leftChars->setText(left);
239 rightChars->setText(right);
243 void UnicodeWidget::clearOverviewChars()
245 leftChars->setText("");
246 rightChars->setText("");
249 QString UnicodeWidget::nextUnicode(const QString &text, Direction direction)
255 switch (inputMethod) {
256 case UnicodeDialog::InputHex:
257 value = text.toUInt(&ok, 16);
267 if (value == (uint) - 1) value = MAX_UNICODE_V1;
268 if (value > MAX_UNICODE_V1) value = 0;
270 newText.setNum(value, 16);
273 case UnicodeDialog::InputDec:
280 void UnicodeWidget::readChoices()
282 // Get a pointer to a shared configuration instance, then get the TitleWidget group.
283 KSharedConfigPtr config = KGlobal::config();
284 KConfigGroup titleConfig(config, "TitleWidget");
286 // Default is 2013 because there is also (perhaps interesting) information.
287 m_lastUnicodeNumber = titleConfig.readEntry("unicode_number", QString("2013"));
290 void UnicodeWidget::writeChoices()
292 // Get a pointer to a shared configuration instance, then get the TitleWidget group.
293 KSharedConfigPtr config = KGlobal::config();
294 KConfigGroup titleConfig(config, "TitleWidget");
296 titleConfig.writeEntry("unicode_number", m_lastUnicodeNumber);
303 * \brief Validates the entered Unicode number and displays its Unicode character.
305 void UnicodeWidget::slotTextChanged(const QString &text)
307 unicodeNumber->blockSignals(true);
309 QString newText = validateText(text);
310 if (newText.length() == 0) {
311 unicodeChar->setText("");
312 unicodeNumber->setText("");
313 clearOverviewChars();
315 m_lastUnicodeNumber = "";
316 labelInfoText->setText(unicodeInfo(""));
320 int cursorPos = unicodeNumber->cursorPosition();
322 unicodeNumber->setText(newText);
323 unicodeNumber->setCursorPosition(cursorPos);
325 // Get the decimal number as uint to create the QChar from
328 switch (inputMethod) {
329 case UnicodeDialog::InputHex:
330 value = newText.toUInt(&ok, 16);
332 case UnicodeDialog::InputDec:
333 value = newText.toUInt(&ok, 10);
336 updateOverviewChars(value);
339 // Impossible! validateText never fails!
342 // If an invalid character has been entered:
343 // Reset the cursor position because the entered char has been deleted.
344 if (text != newText && newText == m_lastUnicodeNumber) {
345 unicodeNumber->setCursorPosition(m_lastCursorPos);
348 m_lastCursorPos = unicodeNumber->cursorPosition();
349 m_lastUnicodeNumber = newText;
351 labelInfoText->setText(unicodeInfo(newText));
352 unicodeChar->setText(QChar(value));
355 unicodeNumber->blockSignals(false);
359 * When return pressed, we return the selected unicode character
360 * if it was not a control character.
362 void UnicodeWidget::slotReturnPressed()
364 unicodeNumber->setFocus();
365 const QString text = trimmedUnicodeNumber(unicodeNumber->text());
366 if (!controlCharacter(text)) {
367 emit charSelected(unicodeChar->text());
372 void UnicodeWidget::slotNextUnicode()
374 const QString text = unicodeNumber->text();
375 unicodeNumber->setText(nextUnicode(text, Forward));
378 void UnicodeWidget::slotPrevUnicode()
380 const QString text = unicodeNumber->text();
381 unicodeNumber->setText(nextUnicode(text, Backward));
384 void UnicodeWidget::wheelEvent(QWheelEvent * event)
386 if (frame->underMouse()) {
387 if (event->delta() > 0)
394 #include "unicodedialog.moc"