117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
/*
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* Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "codecompletionlistview.h"
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#include "../mainwindow.h"
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#include "../editor.h"
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#include "../editorlist.h"
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#include <QPainter>
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#include <QTextDocument>
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#include <qabstracttextdocumentlayout.h>
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CodeCompletionListView::CodeCompletionListView(QWidget *parent) : QListView(parent)
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{
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setUniformItemSizes(true);
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setItemDelegate(&mDelegate);
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}
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void CodeCompletionListView::keyPressEvent(QKeyEvent *event)
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{
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if (event->key() == Qt::Key_Up
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|| event->key() == Qt::Key_Down
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|| event->key() == Qt::Key_PageDown
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|| event->key() == Qt::Key_PageUp
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|| event->key() == Qt::Key_Home
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|| event->key() == Qt::Key_End
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) {
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QListView::keyPressEvent(event);
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return;
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}
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if (!mKeypressedCallback || !mKeypressedCallback(event)) {
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QListView::keyPressEvent(event);
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}
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}
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void CodeCompletionListView::focusInEvent(QFocusEvent *)
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{
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Editor *editor = pMainWindow->editorList()->getEditor();
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if (editor) {
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editor->showCaret();
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}
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}
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const KeyPressedCallback &CodeCompletionListView::keypressedCallback() const
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{
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return mKeypressedCallback;
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}
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void CodeCompletionListView::setKeypressedCallback(const KeyPressedCallback &newKeypressedCallback)
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{
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mKeypressedCallback = newKeypressedCallback;
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}
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void CodeCompletionListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QVariant data = index.data();
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if (data.canConvert<QString>()) {
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painter->save();
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QString richText = qvariant_cast<QString>(data);
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if (option.state & QStyle::State_Selected)
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painter->fillRect(option.rect, option.palette.highlight());
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QColor color = index.data(Qt::ForegroundRole).value<QColor>();
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if (!color.isValid()) {
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color = option.palette.color(QPalette::Text);
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}
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painter->setPen(color);
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QTextDocument doc;
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doc.setHtml(richText);
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doc.setDefaultFont(painter->font());
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QTransform transform;
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transform.translate(option.rect.left(),option.rect.top());
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painter->setTransform(transform);
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QRect clipRect = option.rect;
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clipRect.moveTopLeft(QPoint(0,0));
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painter->setClipRect(clipRect);
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QAbstractTextDocumentLayout::PaintContext ctx;
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ctx.palette.setColor(QPalette::Text, color);
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ctx.clip = clipRect;
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doc.documentLayout()->draw(painter,ctx);
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painter->restore();
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} else {
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QStyledItemDelegate::paint(painter, option, index);
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}
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}
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QSize CodeCompletionListItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QVariant data = index.data();
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if (data.canConvert<QString>()) {
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QString richText = qvariant_cast<QString>(data);
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QTextDocument doc;
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doc.setHtml(richText);
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return QSize(doc.size().width(),doc.size().height());
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} else {
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return QStyledItemDelegate::sizeHint(option, index);
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}
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}
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