Expose QPixmapCache's cache limit size as an user preference

cockatrice/src/dlg_settings.cpp

@@ -50,16 +50,27 @@ GeneralSettingsPage::GeneralSettingsPage()
     picDownloadHqCheckBox = new QCheckBox;
     picDownloadHqCheckBox->setChecked(settingsCache->getPicDownloadHq());
 
+    pixmapCacheLabel = new QLabel;
+    pixmapCacheEdit = new QSpinBox;
+    pixmapCacheEdit->setMinimum(64);
+    pixmapCacheEdit->setMaximum(8192);
+    pixmapCacheEdit->setSingleStep(64);
+    pixmapCacheEdit->setValue(settingsCache->getPixmapCacheSize());
+    pixmapCacheEdit->setSuffix(" MB");
+
     connect(languageBox, SIGNAL(currentIndexChanged(int)), this, SLOT(languageBoxChanged(int)));
     connect(picDownloadCheckBox, SIGNAL(stateChanged(int)), settingsCache, SLOT(setPicDownload(int)));
     connect(picDownloadHqCheckBox, SIGNAL(stateChanged(int)), settingsCache, SLOT(setPicDownloadHq(int)));
+    connect(pixmapCacheEdit, SIGNAL(valueChanged(int)), settingsCache, SLOT(setPixmapCacheSize(int)));
 
     QGridLayout *personalGrid = new QGridLayout;
     personalGrid->addWidget(languageLabel, 0, 0);
     personalGrid->addWidget(languageBox, 0, 1);
-    personalGrid->addWidget(picDownloadCheckBox, 1, 0, 1, 2);
-    personalGrid->addWidget(picDownloadHqCheckBox, 2, 0, 1, 2);
-    personalGrid->addWidget(clearDownloadedPicsButton, 3, 0, 1, 1);
+    personalGrid->addWidget(pixmapCacheLabel, 1, 0, 1, 1);
+    personalGrid->addWidget(pixmapCacheEdit, 1, 1, 1, 1);
+    personalGrid->addWidget(picDownloadCheckBox, 2, 0, 1, 2);
+    personalGrid->addWidget(picDownloadHqCheckBox, 3, 0, 1, 2);
+    personalGrid->addWidget(clearDownloadedPicsButton, 4, 0, 1, 1);
 
     personalGroupBox = new QGroupBox;
     personalGroupBox->setLayout(personalGrid);
@@ -227,6 +238,7 @@ void GeneralSettingsPage::retranslateUi()
     picsPathLabel->setText(tr("Pictures directory:"));
     cardDatabasePathLabel->setText(tr("Card database:"));
     tokenDatabasePathLabel->setText(tr("Token database:"));
+    pixmapCacheLabel->setText(tr("Picture cache size:"));
 }
 
 AppearanceSettingsPage::AppearanceSettingsPage()

cockatrice/src/dlg_settings.h

@@ -16,6 +16,7 @@ class QLabel;
 class QCloseEvent;
 class QSpinBox;
 class QRadioButton;
+class QSpinBox;
 
 class AbstractSettingsPage : public QWidget {
 public:
@@ -39,11 +40,12 @@ private:
     QStringList findQmFiles();
     QString languageName(const QString &qmFile);
     QLineEdit *deckPathEdit, *replaysPathEdit, *picsPathEdit, *cardDatabasePathEdit, *tokenDatabasePathEdit;
+    QSpinBox *pixmapCacheEdit;
     QGroupBox *personalGroupBox, *pathsGroupBox;
     QComboBox *languageBox;
     QCheckBox *picDownloadCheckBox;
     QCheckBox *picDownloadHqCheckBox;
-    QLabel *languageLabel, *deckPathLabel, *replaysPathLabel, *picsPathLabel, *cardDatabasePathLabel, *tokenDatabasePathLabel;
+    QLabel *languageLabel, *deckPathLabel, *replaysPathLabel, *picsPathLabel, *cardDatabasePathLabel, *tokenDatabasePathLabel, *pixmapCacheLabel;
 };
 
 class AppearanceSettingsPage : public AbstractSettingsPage {

cockatrice/src/settingscache.cpp

@@ -23,6 +23,7 @@ SettingsCache::SettingsCache()
 
     picDownload = settings->value("personal/picturedownload", true).toBool();
     picDownloadHq = settings->value("personal/picturedownloadhq", false).toBool();
+    pixmapCacheSize = settings->value("personal/pixmapCacheSize", PIXMAPCACHE_SIZE_DEFAULT).toInt();
     picUrl = settings->value("personal/picUrl", PIC_URL_DEFAULT).toString();
     picUrlHq = settings->value("personal/picUrlHq", PIC_URL_HQ_DEFAULT).toString();
     picUrlFallback = settings->value("personal/picUrlFallback", PIC_URL_FALLBACK).toString();
@@ -289,6 +290,13 @@ void SettingsCache::setAutoConnect(const bool &_autoConnect)
     settings->setValue("server/auto_connect", attemptAutoConnect ? 1 : 0);
 }
 
+void SettingsCache::setPixmapCacheSize(const int _pixmapCacheSize)
+{
+    pixmapCacheSize = _pixmapCacheSize;
+    settings->setValue("personal/pixmapCacheSize", pixmapCacheSize);
+    emit pixmapCacheSizeChanged(pixmapCacheSize);
+}
+
 void SettingsCache::copyPath(const QString &src, const QString &dst)
 {
     // test source && return if inexistent

cockatrice/src/settingscache.h

@@ -7,6 +7,8 @@
 #define PIC_URL_FALLBACK "http://mtgimage.com/set/!setcode!/!name!.jpg"
 #define PIC_URL_HQ_DEFAULT "http://mtgimage.com/multiverseid/!cardid!.jpg"
 #define PIC_URL_HQ_FALLBACK "http://mtgimage.com/set/!setcode!/!name!.jpg"
+// size should be a multiple of 64
+#define PIXMAPCACHE_SIZE_DEFAULT 256
 
 class QSettings;
 
@@ -32,6 +34,7 @@ signals:
     void soundPathChanged();
     void priceTagFeatureChanged(int enabled);
     void ignoreUnregisteredUsersChanged();
+    void pixmapCacheSizeChanged(int value);
 private:
     QSettings *settings;
 
@@ -62,6 +65,7 @@ private:
     QString picUrlFallback;
     QString picUrlHqFallback;
     bool attemptAutoConnect;
+    int pixmapCacheSize;
 public:
     SettingsCache();
     const QByteArray &getMainWindowGeometry() const { return mainWindowGeometry; }
@@ -101,6 +105,7 @@ public:
     QString getPicUrlHqFallback() const { return picUrlHqFallback; }
     void copyPath(const QString &src, const QString &dst);
     bool getAutoConnect() const { return attemptAutoConnect; }
+    int getPixmapCacheSize() const { return pixmapCacheSize; }
 public slots:
     void setMainWindowGeometry(const QByteArray &_mainWindowGeometry);
     void setLang(const QString &_lang);
@@ -138,6 +143,7 @@ public slots:
     void setPicUrlFallback(const QString &_picUrlFallback);
     void setPicUrlHqFallback(const QString &_picUrlHqFallback);
     void setAutoConnect(const bool &_autoConnect);
+    void setPixmapCacheSize(const int _pixmapCacheSize);
 };
 
 extern SettingsCache *settingsCache;

cockatrice/src/window_main.cpp

@@ -361,7 +361,8 @@ void MainWindow::createMenus()
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent), localServer(0), bHasActivated(false)
 {
-    QPixmapCache::setCacheLimit(200000);
+    connect(settingsCache, SIGNAL(pixmapCacheSizeChanged(int)), this, SLOT(pixmapCacheSizeChanged(int)));
+    pixmapCacheSizeChanged(settingsCache->getPixmapCacheSize());
 
     client = new RemoteClient;
     connect(client, SIGNAL(connectionClosedEventReceived(const Event_ConnectionClosed &)), this, SLOT(processConnectionClosedEvent(const Event_ConnectionClosed &)));
@@ -430,3 +431,10 @@ void MainWindow::changeEvent(QEvent *event)
 
     QMainWindow::changeEvent(event);
 }
+
+void MainWindow::pixmapCacheSizeChanged(int value)
+{
+    //qDebug() << "Setting pixmap cache size to " << value << " MBs";
+    // translate MBs to KBs
+    QPixmapCache::setCacheLimit(value * 1024);
+}

cockatrice/src/window_main.h

@@ -44,6 +44,7 @@ private slots:
     void protocolVersionMismatch(int localVersion, int remoteVersion);
     void userInfoReceived(const ServerInfo_User &userInfo);
     void localGameEnded();
+    void pixmapCacheSizeChanged(int value);
 
     void actConnect();
     void actDisconnect();