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textedit.cpp
142 lines (131 loc) · 3.92 KB
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textedit.cpp
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#include "textedit.h"
#include "settings.h"
#include <QRegExp>
#include <QMouseEvent>
#include <QUrl>
#include <QDesktopServices>
//Checking note's text for link
inline bool isOnLink(const QTextDocument& document, const QTextCursor& cursor, int& pos_start, int& pos_end)
{
const int position = cursor.position();
if(!document.characterAt(position).isSpace())
{
pos_start = position;
while(pos_start>0 && !document.characterAt(pos_start-1).isSpace()) --pos_start; //Detecting start on the word
const int characterCount = document.characterCount();
pos_end = position;
while(pos_end<characterCount && !document.characterAt(pos_end).isSpace()) ++pos_end; //Detecting end on the word
//
QStringList signlist;
signlist << "http://" << "https://" << "ftp://";
const int link_lenght = pos_end-pos_start;
QStringList::const_iterator sign_it;
for(sign_it=signlist.constBegin(); sign_it!=signlist.constEnd(); ++sign_it)
{
if(link_lenght>sign_it->size())
{
bool isLink = true;
int i = 0;
while(i<sign_it->size())
{
if(document.characterAt(pos_start+i)!=sign_it->at(i))
{
isLink = false;
break;
}
++i;
}
if(isLink) return true;
}
}
}
return false;
}
//------------------------------------------------------------------------------
TextEdit::TextEdit()
: QTextEdit()
{
highlighter = new Highlighter(document());
connect(&settings, SIGNAL(NoteHighlightChanged()), highlighter, SLOT(rehighlight()));
setFont(settings.getNoteFont());
connect(&settings, SIGNAL(NoteFontChanged()), this, SLOT(fontChanged()));
setMouseTracking(settings.getNoteLinksOpen());
connect(&settings, SIGNAL(NoteLinkOpenChanged()), this, SLOT(linkOpenChanged()));
}
//Mouse pressing
void TextEdit::mousePressEvent(QMouseEvent *e)
{
if(settings.getNoteLinksOpen() && e->buttons()==Qt::LeftButton && e->modifiers()&Qt::ControlModifier) //Ctrl+LeftMouseButton
{
bool onLink = false;
int position_start, position_end;
const QTextCursor cursor = cursorForPosition(e->pos());
onLink = isOnLink(*document(), cursor, position_start, position_end);
//
if(onLink) //if link under cursor
{
const QUrl link(toPlainText().mid(position_start, position_end-position_start));
QDesktopServices::openUrl(link);
}
}
else QTextEdit::mousePressEvent(e);
}
//Mouse moving
void TextEdit::mouseMoveEvent(QMouseEvent *e)
{
bool onLink = false;
int position_start, position_end;
if(settings.getNoteLinksOpen() && e->buttons()==Qt::NoButton && e->modifiers()&Qt::ControlModifier) //Ctrl+NoMouseButton
{
QTextCursor cursor = cursorForPosition(e->pos());
onLink = isOnLink(*document(), cursor, position_start, position_end);
}
if(onLink) //if link under cursor
{
QTextEdit::ExtraSelection sel;
sel.cursor = textCursor();
sel.cursor.setPosition(position_start);
sel.cursor.setPosition(position_end, QTextCursor::KeepAnchor);
sel.format = highlighter->linkFormat;
sel.format.setFontUnderline(true);
setExtraSelections(QList<QTextEdit::ExtraSelection>() << sel); //Underlining link
viewport()->setCursor(Qt::PointingHandCursor);
}
else
{
setExtraSelections(QList<QTextEdit::ExtraSelection>()); //Clearing
viewport()->setCursor(Qt::IBeamCursor);
}
QTextEdit::mouseMoveEvent(e);
}
//Focus out
void TextEdit::focusOutEvent(QFocusEvent*)
{
setExtraSelections(QList<QTextEdit::ExtraSelection>()); //Clearing
}
//If notes' font changed in the preferences, applying font to note
void TextEdit::fontChanged()
{
setFont(settings.getNoteFont());
}
void TextEdit::linkOpenChanged()
{
bool is_link_open = settings.getNoteLinksOpen();
setMouseTracking(is_link_open);
if(!is_link_open)
{
setExtraSelections(QList<QTextEdit::ExtraSelection>());
viewport()->setCursor(Qt::IBeamCursor);
}
}
//Searching
bool TextEdit::search(const QString& text, bool next)
{
if(next) //search next
{
QTextCursor cursor(textCursor().block().next());
setTextCursor(cursor);
}
else unsetCursor(); //new search
return find(text);
}