Refactor Picture Loader (#5457)

2026-06-11 08:34:52 -07:00 · 2025-01-13 19:52:54 +01:00 · 2025-01-13 19:52:54 +01:00 · ba89495dc0
commit ba89495dc0
parent a417b049da
17 changed files with 614 additions and 581 deletions
--- a/cockatrice/src/client/ui/picture_loader/picture_loader.cpp
+++ b/cockatrice/src/client/ui/picture_loader/picture_loader.cpp
@ -0,0 +1,158 @@
+#include "picture_loader.h"
+
+#include "../../../settings/cache_settings.h"
+
+#include <QApplication>
+#include <QBuffer>
+#include <QDebug>
+#include <QDirIterator>
+#include <QFileInfo>
+#include <QMovie>
+#include <QNetworkDiskCache>
+#include <QNetworkRequest>
+#include <QPainter>
+#include <QPixmapCache>
+#include <QScreen>
+#include <QThread>
+#include <algorithm>
+#include <qloggingcategory.h>
+#include <utility>
+
+Q_LOGGING_CATEGORY(PictureLoaderLog, "picture_loader")
+
+// never cache more than 300 cards at once for a single deck
+#define CACHED_CARD_PER_DECK_MAX 300
+
+PictureLoader::PictureLoader() : QObject(nullptr)
+{
+    worker = new PictureLoaderWorker;
+    connect(&SettingsCache::instance(), SIGNAL(picsPathChanged()), this, SLOT(picsPathChanged()));
+    connect(&SettingsCache::instance(), SIGNAL(picDownloadChanged()), this, SLOT(picDownloadChanged()));
+
+    connect(worker, SIGNAL(imageLoaded(CardInfoPtr, const QImage &)), this,
+            SLOT(imageLoaded(CardInfoPtr, const QImage &)));
+}
+
+PictureLoader::~PictureLoader()
+{
+    worker->deleteLater();
+}
+
+void PictureLoader::getCardBackPixmap(QPixmap &pixmap, QSize size)
+{
+    QString backCacheKey = "_trice_card_back_" + QString::number(size.width()) + QString::number(size.height());
+    if (!QPixmapCache::find(backCacheKey, &pixmap)) {
+        qCDebug(PictureLoaderLog) << "PictureLoader: cache fail for" << backCacheKey;
+        pixmap = QPixmap("theme:cardback").scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+        QPixmapCache::insert(backCacheKey, pixmap);
+    }
+}
+
+void PictureLoader::getCardBackLoadingInProgressPixmap(QPixmap &pixmap, QSize size)
+{
+    QString backCacheKey = "_trice_card_back_" + QString::number(size.width()) + QString::number(size.height());
+    if (!QPixmapCache::find(backCacheKey, &pixmap)) {
+        qCDebug(PictureLoaderLog) << "PictureLoader: cache fail for" << backCacheKey;
+        pixmap = QPixmap("theme:cardback").scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+        QPixmapCache::insert(backCacheKey, pixmap);
+    }
+}
+
+void PictureLoader::getCardBackLoadingFailedPixmap(QPixmap &pixmap, QSize size)
+{
+    QString backCacheKey = "_trice_card_back_" + QString::number(size.width()) + QString::number(size.height());
+    if (!QPixmapCache::find(backCacheKey, &pixmap)) {
+        qCDebug(PictureLoaderLog) << "PictureLoader: cache fail for" << backCacheKey;
+        pixmap = QPixmap("theme:cardback").scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+        QPixmapCache::insert(backCacheKey, pixmap);
+    }
+}
+
+void PictureLoader::getPixmap(QPixmap &pixmap, CardInfoPtr card, QSize size)
+{
+    if (card == nullptr) {
+        return;
+    }
+
+    // search for an exact size copy of the picture in cache
+    QString key = card->getPixmapCacheKey();
+    QString sizeKey = key + QLatin1Char('_') + QString::number(size.width()) + QString::number(size.height());
+    if (QPixmapCache::find(sizeKey, &pixmap))
+        return;
+
+    // load the image and create a copy of the correct size
+    QPixmap bigPixmap;
+    if (QPixmapCache::find(key, &bigPixmap)) {
+        QScreen *screen = qApp->primaryScreen();
+        qreal dpr = screen->devicePixelRatio();
+        pixmap = bigPixmap.scaled(size * dpr, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+        pixmap.setDevicePixelRatio(dpr);
+        QPixmapCache::insert(sizeKey, pixmap);
+        return;
+    }
+
+    // add the card to the load queue
+    getInstance().worker->enqueueImageLoad(card);
+}
+
+void PictureLoader::imageLoaded(CardInfoPtr card, const QImage &image)
+{
+    if (image.isNull()) {
+        QPixmapCache::insert(card->getPixmapCacheKey(), QPixmap());
+    } else {
+        if (card->getUpsideDownArt()) {
+            QImage mirrorImage = image.mirrored(true, true);
+            QPixmapCache::insert(card->getPixmapCacheKey(), QPixmap::fromImage(mirrorImage));
+        } else {
+            QPixmapCache::insert(card->getPixmapCacheKey(), QPixmap::fromImage(image));
+        }
+    }
+
+    card->emitPixmapUpdated();
+}
+
+void PictureLoader::clearPixmapCache(CardInfoPtr card)
+{
+    if (card) {
+        QPixmapCache::remove(card->getPixmapCacheKey());
+    }
+}
+
+void PictureLoader::clearPixmapCache()
+{
+    QPixmapCache::clear();
+}
+
+void PictureLoader::clearNetworkCache()
+{
+    getInstance().worker->clearNetworkCache();
+}
+
+void PictureLoader::cacheCardPixmaps(QList<CardInfoPtr> cards)
+{
+    QPixmap tmp;
+    int max = qMin(cards.size(), CACHED_CARD_PER_DECK_MAX);
+    for (int i = 0; i < max; ++i) {
+        const CardInfoPtr &card = cards.at(i);
+        if (!card) {
+            continue;
+        }
+
+        QString key = card->getPixmapCacheKey();
+        if (QPixmapCache::find(key, &tmp)) {
+            continue;
+        }
+
+        getInstance().worker->enqueueImageLoad(card);
+    }
+}
+
+void PictureLoader::picDownloadChanged()
+{
+    QPixmapCache::clear();
+}
+
+void PictureLoader::picsPathChanged()
+{
+    QPixmapCache::clear();
+}