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"
14 const int MAX_LENGTH_HEX = 4;
15 const uint MAX_UNICODE_V1 = 65535;
18 /// CONSTRUCTORS/DECONSTRUCTORS
20 UnicodeDialog::UnicodeDialog(InputMethod inputMeth, QString lastUnicodeNumber) :
21 inputMethod(inputMeth),
23 m_lastUnicodeNumber(lastUnicodeNumber)
27 connect(unicodeNumber, SIGNAL(textChanged(QString)), this, SLOT(slotTextChanged(QString)));
28 connect(unicodeNumber, SIGNAL(returnPressed()), this, SLOT(slotReturnPressed()));
29 connect(arrowUp, SIGNAL(clicked()), this, SLOT(slotNextUnicode()));
30 connect(arrowDown, SIGNAL(clicked()), this, SLOT(slotPrevUnicode()));
32 switch (inputMethod) {
34 unicodeNumber->setMaxLength(MAX_LENGTH_HEX);
41 arrowUp->setShortcut(Qt::Key_Up);
42 arrowDown->setShortcut(Qt::Key_Down);
44 arrowUp->setToolTip(i18n("Next Unicode character (Arrow Up)"));
45 arrowDown->setToolTip(i18n("Previous Unicode character (Arrow Down)"));
46 unicodeNumber->setToolTip(i18n("Enter your Unicode number here. Allowed characters: [0-9] and [a-f]."));
47 unicodeNumber->selectAll(); // Selection will be reset by setToolTip and similar, so set it here
51 UnicodeDialog::~UnicodeDialog()
58 void UnicodeDialog::showLastUnicode()
60 unicodeNumber->setText(m_lastUnicodeNumber);
61 unicodeNumber->selectAll();
62 slotTextChanged(m_lastUnicodeNumber);
65 bool UnicodeDialog::controlCharacter(QString text)
67 bool isControlCharacter = false;
68 QString t = text.toLower();
70 switch (inputMethod) {
73 || (t.length() == 1 && !(t == "9" || t == "a" || t == "d"))
74 || (t.length() == 2 && t.at(0) == QChar('1'))) {
75 isControlCharacter = true;
81 isControlCharacter = controlCharacter(text.toUInt(&ok, 16));
85 return isControlCharacter;
88 bool UnicodeDialog::controlCharacter(uint value)
90 bool isControlCharacter = false;
92 if (value < 32 && !(value == 9 || value == 10 || value == 13)) {
93 isControlCharacter = true;
95 return isControlCharacter;
99 QString UnicodeDialog::trimmedUnicodeNumber(QString text)
101 while (text.length() > 0 && text.at(0) == QChar('0')) {
102 text = text.remove(0, 1);
107 QString UnicodeDialog::unicodeInfo(QString unicode)
109 QString infoText(i18n("<small>(no character selected)</small>"));
110 if (unicode.length() == 0) return infoText;
112 QString u = trimmedUnicodeNumber(unicode).toLower();
114 if (controlCharacter(u)) {
115 infoText = i18n("Control character. Cannot be inserted/printed. See <a href=\"http://en.wikipedia.org/wiki/Control_character\">Wikipedia:Control_character</a>");
116 } else if (u == "a") {
117 infoText = i18n("Line Feed (newline character, \\\\n)");
118 } else if (u == "20") {
119 infoText = i18n("Standard space character. (Other space characters: U+00a0, U+2000–200b, U+202f)");
120 } else if (u == "a0") {
121 infoText = i18n("No-break space. &nbsp; in HTML. See U+2009 and U+0020.");
122 } else if (u == "ab" || u == "bb" || u == "2039" || u == "203a") {
123 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>");
124 } else if (u == "2002") {
125 infoText = i18n("En Space (width of an n)");
126 } else if (u == "2003") {
127 infoText = i18n("Em Space (width of an m)");
128 } else if (u == "2004") {
129 infoText = i18n("Three-Per-Em Space. Width: 1/3 of one <em>em</em>");
130 } else if (u == "2005") {
131 infoText = i18n("Four-Per-Em Space. Width: 1/4 of one <em>em</em>");
132 } else if (u == "2006") {
133 infoText = i18n("Six-Per-Em Space. Width: 1/6 of one <em>em</em>");
134 } else if (u == "2007") {
135 infoText = i18n("Figure space (non-breaking). Width of a digit if digits have fixed width in this font.");
136 } else if (u == "2008") {
137 infoText = i18n("Punctuation Space. Width the same as between a punctuation character and the next character.");
138 } else if (u == "2009") {
139 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>");
140 } else if (u == "200a") {
141 infoText = i18n("Hair Space. Thinner than U+2009.");
142 } else if (u == "2019") {
143 infoText = i18n("Punctuation Apostrophe. Should be used instead of U+0027. See <a href=\"http://en.wikipedia.org/wiki/Apostrophe\">Wikipedia:Apostrophe</a>");
144 } else if (u == "2013") {
145 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>");
146 } else if (u == "2014") {
147 infoText = i18n("<p>An em Dash (dash of the widht 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>");
148 } else if (u == "202f") {
149 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>");
150 } else if (u == "2026") {
151 infoText = i18n("Ellipsis: If text has been left o… See <a href=\"http://en.wikipedia.org/wiki/Ellipsis\">Wikipedia:Ellipsis</a>");
152 } else if (u == "2212") {
153 infoText = i18n("Minus sign. For numbers: −42");
154 } else if (u == "2423") {
155 infoText = i18n("Open box; stands for a space.");
157 infoText = i18n("<small>No additional information available for this character.</small>");
163 QString UnicodeDialog::validateText(QString text)
165 QRegExp regex("([0-9]|[a-f])", Qt::CaseInsensitive, QRegExp::RegExp2);
166 QString newText = "";
169 switch (inputMethod) {
171 // Remove all characters we don't want
172 while ((pos = regex.indexIn(text, pos)) != -1) {
173 newText += regex.cap(1);
186 void UnicodeDialog::updateOverviewChars(uint unicode)
192 for (i = 1; i <= 4; i++) {
193 if (unicode > i && !controlCharacter(unicode - i)) {
195 left = QChar(unicode - i) + left;
199 for (i = 1; i <= 8; i++) {
200 if (unicode + i <= MAX_UNICODE_V1 && !controlCharacter(unicode + i)) {
201 right += QChar(unicode + i);
206 leftChars->setText(left);
207 rightChars->setText(right);
211 void UnicodeDialog::clearOverviewChars()
213 leftChars->setText("");
214 rightChars->setText("");
217 QString UnicodeDialog::nextUnicode(QString text, Direction direction)
220 QString newText = "";
223 switch (inputMethod) {
225 value = text.toUInt(&ok, 16);
235 if (value == (uint) - 1) value = MAX_UNICODE_V1;
236 if (value > MAX_UNICODE_V1) value = 0;
238 newText.setNum(value, 16);
252 * \brief Validates the entered Unicode number and displays its Unicode character.
254 void UnicodeDialog::slotTextChanged(QString text)
256 unicodeNumber->blockSignals(true);
258 QString newText = validateText(text);
259 if (newText.length() == 0) {
260 unicodeChar->setText("");
261 unicodeNumber->setText("");
262 clearOverviewChars();
264 m_lastUnicodeNumber = "";
265 labelInfoText->setText(unicodeInfo(""));
269 int cursorPos = unicodeNumber->cursorPosition();
271 unicodeNumber->setText(newText);
272 unicodeNumber->setCursorPosition(cursorPos);
274 // Get the decimal number as uint to create the QChar from
277 switch (inputMethod) {
279 value = newText.toUInt(&ok, 16);
282 value = newText.toUInt(&ok, 10);
285 updateOverviewChars(value);
288 // Impossible! validateText never fails!
291 // If an invalid character has been entered:
292 // Reset the cursor position because the entered char has been deleted.
293 if (text != newText && newText == m_lastUnicodeNumber) {
294 unicodeNumber->setCursorPosition(m_lastCursorPos);
297 m_lastCursorPos = unicodeNumber->cursorPosition();
298 m_lastUnicodeNumber = newText;
300 labelInfoText->setText(unicodeInfo(newText));
301 unicodeChar->setText(QChar(value));
304 unicodeNumber->blockSignals(false);
308 * When return pressed, we return the selected unicode character
309 * if it was not a control character.
311 void UnicodeDialog::slotReturnPressed()
313 QString text = trimmedUnicodeNumber(unicodeNumber->text());
314 if (!controlCharacter(text)) {
315 emit charSelected(unicodeChar->text());
316 emit newUnicodeNumber(unicodeNumber->text());
321 void UnicodeDialog::slotNextUnicode()
323 QString text = unicodeNumber->text();
324 unicodeNumber->setText(nextUnicode(text, Forward));
327 void UnicodeDialog::slotPrevUnicode()
329 QString text = unicodeNumber->text();
330 unicodeNumber->setText(nextUnicode(text, Backward));
333 #include "unicodedialog.moc"