fix: algin instance icon

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

launcher/CMakeLists.txt

@@ -872,6 +872,8 @@ SET(LAUNCHER_SOURCES
     # GUI - instance group view
     ui/instanceview/InstanceProxyModel.cpp
     ui/instanceview/InstanceProxyModel.h
+    ui/instanceview/InstanceDelegate.h
+    ui/instanceview/InstanceDelegate.cpp
     ui/instanceview/InstanceView.h
     ui/instanceview/InstanceView.cpp
 )

launcher/ui/instanceview/InstanceDelegate.cpp

@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "InstanceDelegate.h"
+#include "InstanceList.h"
+
+InstanceDelegate::InstanceDelegate(QObject* parent) : QStyledItemDelegate(parent) {}
+
+void InstanceDelegate::initStyleOption(QStyleOptionViewItem* option, const QModelIndex& index) const
+{
+    QStyledItemDelegate::initStyleOption(option, index);
+    if (index.column() == InstanceList::Icon) {
+        // make decoration fill cell, subtract default margins
+        option->decorationSize = option->rect.size().shrunkBy(QMargins(3, 1, 3, 1));
+    }
+}

launcher/ui/instanceview/InstanceDelegate.h

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QStyledItemDelegate>
+
+class InstanceDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+
+   public:
+    InstanceDelegate(QObject* parent = 0);
+
+    void initStyleOption(QStyleOptionViewItem* option, const QModelIndex& index) const override;
+};

launcher/ui/instanceview/InstanceProxyModel.cpp

@@ -32,7 +32,7 @@ QVariant InstanceProxyModel::data(const QModelIndex& index, int role) const
     QVariant data = QSortFilterProxyModel::data(index, role);
     if (role == Qt::DecorationRole) {
         if (!data.toString().isEmpty())
-            return APPLICATION->icons()->getIcon(data.toString());  // FIXME: Needs QStyledItemDelegate
+            return APPLICATION->icons()->getIcon(data.toString());
     }
 
     switch (index.column()) {

launcher/ui/instanceview/InstanceView.cpp

@@ -25,6 +25,7 @@
 #include "InstanceView.h"
 #include "Application.h"
 
+#include "InstanceDelegate.h"
 #include "InstanceList.h"
 #include "ui/instanceview/InstanceProxyModel.h"
 
@@ -57,6 +58,7 @@ void InstanceView::createTable()
 {
     m_table = new QTableView(this);
     m_table->setModel(m_proxy);
+    m_table->setItemDelegate(new InstanceDelegate(this));
 
     m_table->setTabKeyNavigation(false);
     m_table->setSelectionMode(QAbstractItemView::SingleSelection);