MediaSizeHelper

Create a media size helper and use it to force video and images to be the correct size even in replies.

src/mediasizehelper.cpp

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+// SPDX-FileCopyrightText: 2023 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+#include "mediasizehelper.h"
+
+#include "neochatconfig.h"
+
+MediaSizeHelper::MediaSizeHelper(QObject *parent)
+    : QObject(parent)
+{
+}
+
+qreal MediaSizeHelper::contentMaxWidth() const
+{
+    return m_contentMaxWidth;
+}
+
+void MediaSizeHelper::setContentMaxWidth(qreal contentMaxWidth)
+{
+    if (contentMaxWidth < 0.0 || qFuzzyCompare(contentMaxWidth, 0.0)) {
+        m_contentMaxWidth = -1.0;
+        Q_EMIT contentMaxWidthChanged();
+        Q_EMIT currentSizeChanged();
+        return;
+    }
+    if (qFuzzyCompare(contentMaxWidth, m_contentMaxWidth)) {
+        return;
+    }
+    m_contentMaxWidth = contentMaxWidth;
+    Q_EMIT contentMaxWidthChanged();
+    Q_EMIT currentSizeChanged();
+}
+
+qreal MediaSizeHelper::contentMaxHeight() const
+{
+    return m_contentMaxHeight;
+}
+
+void MediaSizeHelper::setContentMaxHeight(qreal contentMaxHeight)
+{
+    if (contentMaxHeight < 0.0 || qFuzzyCompare(contentMaxHeight, 0.0)) {
+        m_contentMaxHeight = -1.0;
+        Q_EMIT contentMaxHeightChanged();
+        Q_EMIT currentSizeChanged();
+        return;
+    }
+    if (qFuzzyCompare(contentMaxHeight, m_contentMaxHeight)) {
+        return;
+    }
+    m_contentMaxHeight = contentMaxHeight;
+    Q_EMIT contentMaxHeightChanged();
+    Q_EMIT currentSizeChanged();
+}
+
+qreal MediaSizeHelper::mediaWidth() const
+{
+    return m_mediaWidth;
+}
+
+void MediaSizeHelper::setMediaWidth(qreal mediaWidth)
+{
+    if (mediaWidth < 0.0 || qFuzzyCompare(mediaWidth, 0.0)) {
+        m_mediaWidth = -1.0;
+        Q_EMIT mediaWidthChanged();
+        Q_EMIT currentSizeChanged();
+        return;
+    }
+    if (qFuzzyCompare(mediaWidth, m_mediaWidth)) {
+        return;
+    }
+    m_mediaWidth = mediaWidth;
+    Q_EMIT mediaWidthChanged();
+    Q_EMIT currentSizeChanged();
+}
+
+qreal MediaSizeHelper::mediaHeight() const
+{
+    return m_mediaHeight;
+}
+
+void MediaSizeHelper::setMediaHeight(qreal mediaHeight)
+{
+    if (mediaHeight < 0.0 || qFuzzyCompare(mediaHeight, 0.0)) {
+        m_mediaHeight = -1.0;
+        Q_EMIT mediaHeightChanged();
+        Q_EMIT currentSizeChanged();
+        return;
+    }
+    if (qFuzzyCompare(mediaHeight, m_mediaHeight)) {
+        return;
+    }
+    m_mediaHeight = mediaHeight;
+    Q_EMIT mediaHeightChanged();
+    Q_EMIT currentSizeChanged();
+}
+
+qreal MediaSizeHelper::resolvedMediaWidth() const
+{
+    if (m_mediaWidth > 0.0) {
+        return m_mediaWidth;
+    }
+    return widthLimit();
+}
+
+qreal MediaSizeHelper::resolvedMediaHeight() const
+{
+    if (m_mediaHeight > 0.0) {
+        return m_mediaHeight;
+    }
+    return widthLimit() / 16.0 * 9.0;
+}
+
+qreal MediaSizeHelper::aspectRatio() const
+{
+    return resolvedMediaWidth() / resolvedMediaHeight();
+}
+
+bool MediaSizeHelper::limitWidth() const
+{
+    // If actual data isn't available we'll be using a placeholder that is width
+    // limited so return true.
+    if (m_mediaWidth < 0.0 || m_mediaHeight < 0.0) {
+        return true;
+    }
+    return m_mediaWidth >= m_mediaHeight;
+}
+
+qreal MediaSizeHelper::widthLimit() const
+{
+    if (m_contentMaxWidth < 0.0) {
+        return NeoChatConfig::self()->mediaMaxWidth();
+    }
+    return std::min(m_contentMaxWidth, qreal(NeoChatConfig::self()->mediaMaxWidth()));
+}
+
+qreal MediaSizeHelper::heightLimit() const
+{
+    if (m_contentMaxHeight < 0.0) {
+        return NeoChatConfig::self()->mediaMaxHeight();
+    }
+    return std::min(m_contentMaxHeight, qreal(NeoChatConfig::self()->mediaMaxHeight()));
+}
+
+QSize MediaSizeHelper::currentSize() const
+{
+    if (limitWidth()) {
+        qreal width = std::min(widthLimit(), resolvedMediaWidth());
+        qreal height = width / aspectRatio();
+        if (height > heightLimit()) {
+            return QSize(qRound(heightLimit() * aspectRatio()), qRound(heightLimit()));
+        }
+        return QSize(qRound(width), qRound(height));
+    } else {
+        qreal height = std::min(heightLimit(), resolvedMediaHeight());
+        qreal width = height * aspectRatio();
+        if (width > widthLimit()) {
+            return QSize(qRound(widthLimit()), qRound(widthLimit() / aspectRatio()));
+        }
+        return QSize(qRound(width), qRound(height));
+    }
+}
+
+#include "moc_mediasizehelper.cpp"