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13cf0c80e6
By switching from a QLabel to a QTextBrowser widget more formatting options and word wrapping that breaks words is possible. It comes with an issue I have been unable to resolve * Selecting text and going down with the cursor will cause it to scroll. It's possible to increase padding to remove this behavior, but it doesn't look great.
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
//
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// ChatMessageArea.cpp
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// interface/src/ui
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//
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// Created by Ryan Huffman on 4/11/14.
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// Copyright 2014 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#include "ChatMessageArea.h"
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#include <QAbstractTextDocumentLayout>
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#include <QWheelEvent>
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ChatMessageArea::ChatMessageArea() : QTextBrowser() {
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connect(document()->documentLayout(), &QAbstractTextDocumentLayout::documentSizeChanged,
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this, &ChatMessageArea::updateLayout);
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};
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void ChatMessageArea::setHtml(const QString& html) {
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// Create format with updated line height
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QTextBlockFormat format;
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format.setLineHeight(CHAT_MESSAGE_LINE_HEIGHT, QTextBlockFormat::ProportionalHeight);
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// Possibly a bug in QT, the format won't take effect if `insertHtml` is used first. Inserting a space and deleting
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// it after ensures the format is applied.
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QTextCursor cursor = textCursor();
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cursor.setBlockFormat(format);
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cursor.insertText(" ");
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cursor.insertHtml(html);
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cursor.setPosition(0);
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cursor.deleteChar();
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};
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void ChatMessageArea::updateLayout() {
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setFixedHeight(document()->size().height());
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updateGeometry();
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}
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void ChatMessageArea::wheelEvent(QWheelEvent* event) {
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// Capture wheel events to stop Ctrl-WheelUp/Down zooming
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event->ignore();
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};
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