add category selector to icon picker dialog

it uses some regex shenanigans for this, probably not ideal, idk if theres a good way to filter the icons without adding extra metadata or storing them in subfolders

Signed-off-by: Tayou <git@tayou.org>

launcher/ui/dialogs/IconPickerDialog.cpp

@@ -35,9 +35,25 @@ IconPickerDialog::IconPickerDialog(QWidget* parent) : QDialog(parent), ui(new Ui
     ui->setupUi(this);
     setWindowModality(Qt::WindowModal);
 
-    searchBar = new QLineEdit(this);
+    static const QString context_text[] = {
-    searchBar->setPlaceholderText(tr("Search..."));
+        tr("All"),
-    ui->verticalLayout->insertWidget(0, searchBar);
+        tr("Modern"),
+        tr("Legacy"),
+        tr("Modpacks"),
+    };
+    static const Context context_id[] = {
+        Any,
+        Modern,
+        Legacy,
+        Modpacks,
+    };
+    const int cnt = sizeof(context_text) / sizeof(context_text[0]);
+    for (int i = 0; i < cnt; ++i) {
+        ui->contextCombo->addItem(context_text[i], context_id[i]);
+        if (i == 0) {
+            ui->contextCombo->insertSeparator(i + 1);
+        }
+    }
 
     proxyModel = new QSortFilterProxyModel(this);
     proxyModel->setSourceModel(APPLICATION->icons());
@@ -45,11 +61,8 @@ IconPickerDialog::IconPickerDialog(QWidget* parent) : QDialog(parent), ui(new Ui
     ui->iconView->setModel(proxyModel);
 
     auto contentsWidget = ui->iconView;
-    contentsWidget->setViewMode(QListView::IconMode);
     contentsWidget->setFlow(QListView::LeftToRight);
     contentsWidget->setIconSize(QSize(48, 48));
-    contentsWidget->setMovement(QListView::Static);
-    contentsWidget->setResizeMode(QListView::Adjust);
     contentsWidget->setSelectionMode(QAbstractItemView::SingleSelection);
     contentsWidget->setSpacing(5);
     contentsWidget->setWordWrap(false);
@@ -86,7 +99,11 @@ IconPickerDialog::IconPickerDialog(QWidget* parent) : QDialog(parent), ui(new Ui
 
     auto buttonFolder = ui->buttonBox->addButton(tr("Open Folder"), QDialogButtonBox::ResetRole);
     connect(buttonFolder, &QPushButton::clicked, this, &IconPickerDialog::openFolder);
-    connect(searchBar, &QLineEdit::textChanged, this, &IconPickerDialog::filterIcons);
+    connect(ui->searchLine, &QLineEdit::textChanged, this, &IconPickerDialog::filterIcons);
+    connect(ui->contextCombo, &QComboBox::currentIndexChanged, this, [this](int index) {
+        Context category = static_cast<Context>(ui->contextCombo->itemData(index).toInt());
+        filterIconsByCategory(category);
+    });
     // Prevent incorrect indices from e.g. filesystem changes
     connect(APPLICATION->icons(), &IconList::iconUpdated, this, [this]() { proxyModel->invalidate(); });
 }
@@ -182,3 +199,22 @@ void IconPickerDialog::filterIcons(const QString& query)
 {
     proxyModel->setFilterFixedString(query);
 }
+
+void IconPickerDialog::filterIconsByCategory(Context category)
+{
+    switch (category) {
+        default:
+        case Any:
+            proxyModel->setFilterRegularExpression("");
+            break;
+        case Modern:
+            proxyModel->setFilterRegularExpression("^(?:ftb_logo|(?!.*_legacy$)(?!^(?:curseforge_|modrinth_|ftb_|technic_|atl_))[A-Za-z0-9._-]+)$");
+            break;
+        case Legacy:
+            proxyModel->setFilterRegularExpression("^(?:[A-Za-z0-9._-]+_legacy|ftb_glow)$");
+            break;
+        case Modpacks:
+            proxyModel->setFilterRegularExpression("^(?!(?:ftb_glow|ftb_logo))(?:curseforge_|modrinth_|ftb_|technic_|atl_)[A-Za-z0-9._-]*$");
+            break;
+    }
+}

launcher/ui/dialogs/IconPickerDialog.h

@@ -41,6 +41,14 @@ class IconPickerDialog : public QDialog {
     QLineEdit* searchBar;
     QSortFilterProxyModel* proxyModel;
 
+    enum Context {
+        Any,
+        Modern,
+        Legacy,
+        Modpacks,
+    };
+    Q_ENUM(Context)
+
    private slots:
     void selectionChanged(QItemSelection, QItemSelection);
     void activated(QModelIndex);
@@ -49,4 +57,5 @@ class IconPickerDialog : public QDialog {
     void removeSelectedIcon();
     void openFolder();
     void filterIcons(const QString& text);
+    void filterIconsByCategory(Context);
 };

launcher/ui/dialogs/IconPickerDialog.ui

@@ -15,7 +15,64 @@
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
-    <widget class="QListView" name="iconView"/>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <item>
+        <widget class="QComboBox" name="contextCombo">
+         <property name="accessibleName">
+          <string>Icon category</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="horizontalSpacer">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>40</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item>
+        <widget class="QLineEdit" name="searchLine">
+         <property name="placeholderText">
+          <string>Search Icons...</string>
+         </property>
+         <property name="clearButtonEnabled">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QListView" name="iconView">
+     <property name="iconSize">
+      <size>
+       <width>60</width>
+       <height>60</height>
+      </size>
+     </property>
+     <property name="movement">
+      <enum>QListView::Static</enum>
+     </property>
+     <property name="resizeMode">
+      <enum>QListView::Adjust</enum>
+     </property>
+     <property name="viewMode">
+      <enum>QListView::IconMode</enum>
+     </property>
+     <property name="uniformItemSizes">
+      <bool>true</bool>
+     </property>
+    </widget>
    </item>
    <item>
     <widget class="QDialogButtonBox" name="buttonBox">