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// Copyright (c) 2015 Riverbank Computing Limited
// Copyright (c) 2011 Archaeopteryx Software, Inc.
// Copyright (c) 1990-2011, Scientific Toolworks, Inc.
//
// The License.txt file describes the conditions under which this software may
// be distributed.
#include <qglobal.h>
#include "Qsci/qsciscintillabase.h"
#include <QColor>
#include <QFont>
#include <QInputMethodEvent>
#include <QRect>
#include <QTextCharFormat>
#include <QTextFormat>
#include <QVariant>
#include <QVarLengthArray>
#include "ScintillaQt.h"
#define INDIC_INPUTMETHOD 24
void QsciScintillaBase::inputMethodEvent(QInputMethodEvent *event)
{
// Do nothing if it appears to be a non-event. This can sometimes happen
// (but why?) on losing focus.
if (event->commitString().isEmpty() && event->preeditString().isEmpty() && event->replacementLength() == 0)
return;
ScintillaBytes bytes;
// Clear the current selection.
sci->ClearSelection();
if (preeditPos >= 0)
sci->SetSelection(preeditPos, preeditPos);
// Insert the commit string.
if (!event->commitString().isEmpty() || event->replacementLength()) {
// Select the text to be removed.
int commitPos = SendScintilla(SCI_GETCURRENTPOS);
int start = commitPos + event->replacementStart();
int end = start + event->replacementLength();
sci->SetSelection(start, end);
// Replace the selection with the commit string.
bytes = textAsBytes(event->commitString());
sci->AddCharUTF(bytes.data(), bytes.length());
}
// Select the previous preedit string.
int pos = SendScintilla(SCI_GETCURRENTPOS);
sci->SetSelection(pos, pos + preeditNrBytes);
// Replace the selection with the new preedit string.
bool recording = sci->recordingMacro;
sci->recordingMacro = false;
SendScintilla(SCI_SETUNDOCOLLECTION, false);
bytes = textAsBytes(event->preeditString());
sci->AddCharUTF(bytes.data(), bytes.length());
SendScintilla(SCI_SETUNDOCOLLECTION, true);
sci->recordingMacro = recording;
sci->SetSelection(pos, pos);
// Store the state of the current preedit string.
preeditString = event->preeditString();
preeditNrBytes = bytes.length();
preeditPos = preeditNrBytes ? SendScintilla(SCI_GETCURRENTPOS) : -1;
if (preeditNrBytes) {
// Apply attributes to the preedit string.
int indicNum = 0;
sci->ShowCaretAtCurrentPosition();
foreach (QInputMethodEvent::Attribute a, event->attributes()) {
QString prefix = preeditString.left(a.start);
int prefixLength = textAsBytes(prefix).length();
int caretPos = preeditPos + prefixLength;
if (a.type == QInputMethodEvent::Cursor) {
sci->SetSelection(caretPos, caretPos);
if (!a.length)
sci->DropCaret();
} else if (a.type == QInputMethodEvent::TextFormat) {
Q_ASSERT(a.value.canConvert(QVariant::TextFormat));
QTextFormat format = a.value.value<QTextFormat>();
Q_ASSERT(format.isCharFormat());
QTextCharFormat charFormat = format.toCharFormat();
if (charFormat.underlineStyle() != QTextCharFormat::NoUnderline) {
QString sub = preeditString.mid(a.start, a.length);
int subLength = textAsBytes(sub).length();
// Set temporary indicator for underline style.
QColor uc = charFormat.underlineColor();
int style = INDIC_COMPOSITIONTHICK;
if (charFormat.underlineStyle() == QTextCharFormat::DashUnderline)
style = INDIC_DASH;
SendScintilla(SCI_INDICSETSTYLE, INDIC_INPUTMETHOD + indicNum, style);
SendScintilla(SCI_INDICSETFORE, INDIC_INPUTMETHOD + indicNum, uc.rgb());
SendScintilla(SCI_SETINDICATORCURRENT, INDIC_INPUTMETHOD + indicNum);
SendScintilla(SCI_INDICATORFILLRANGE, caretPos, subLength);
indicNum++;
}
}
}
}
}
QVariant QsciScintillaBase::inputMethodQuery(Qt::InputMethodQuery query) const
{
int pos = SendScintilla(SCI_GETCURRENTPOS);
int line = SendScintilla(SCI_LINEFROMPOSITION, pos);
switch (query) {
#if QT_VERSION >= 0x050000
case Qt::ImHints:
return QWidget::inputMethodQuery(query);
#endif
case Qt::ImMicroFocus:
{
int startPos = (preeditPos >= 0) ? preeditPos : pos;
Point pt = sci->LocationFromPosition(startPos);
int width = SendScintilla(SCI_GETCARETWIDTH);
int height = SendScintilla(SCI_TEXTHEIGHT, line);
return QRect(pt.x, pt.y, width, height);
}
case Qt::ImFont:
{
char fontName[64];
int style = SendScintilla(SCI_GETSTYLEAT, pos);
int len = SendScintilla(SCI_STYLEGETFONT, style, (sptr_t)fontName);
int size = SendScintilla(SCI_STYLEGETSIZE, style);
bool italic = SendScintilla(SCI_STYLEGETITALIC, style);
int weight = SendScintilla(SCI_STYLEGETBOLD, style) ? QFont::Bold : -1;
return QFont(QString::fromUtf8(fontName, len), size, weight, italic);
}
case Qt::ImCursorPosition:
{
int paraStart = sci->pdoc->ParaUp(pos);
return pos - paraStart;
}
case Qt::ImSurroundingText:
{
int paraStart = sci->pdoc->ParaUp(pos);
int paraEnd = sci->pdoc->ParaDown(pos);
QVarLengthArray<char,1024> buffer(paraEnd - paraStart + 1);
Sci_CharacterRange charRange;
charRange.cpMin = paraStart;
charRange.cpMax = paraEnd;
Sci_TextRange textRange;
textRange.chrg = charRange;
textRange.lpstrText = buffer.data();
SendScintilla(SCI_GETTEXTRANGE, 0, (sptr_t)&textRange);
return bytesAsText(buffer.constData());
}
case Qt::ImCurrentSelection:
{
QVarLengthArray<char,1024> buffer(SendScintilla(SCI_GETSELTEXT));
SendScintilla(SCI_GETSELTEXT, 0, (sptr_t)buffer.data());
return bytesAsText(buffer.constData());
}
default:
return QVariant();
}
}
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