From 4a13dbe3bb22ba47cf1ea5dfe0e9ffc9688b048a Mon Sep 17 00:00:00 2001
From: flow <flowlnlnln@gmail.com>
Date: Thu, 14 Jul 2022 22:23:41 -0300
Subject: feat: create delegate for project item views

This allows us to define custom painting for list view items. In
particular, this is applied to the mod downloader, in order to allow
displaying both the mod name and mod description, and settings their
effects (like bold or underline) independent of each other.

Signed-off-by: flow <flowlnlnln@gmail.com>
---
 launcher/ui/widgets/ProjectItem.cpp | 78 +++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 launcher/ui/widgets/ProjectItem.cpp

(limited to 'launcher/ui/widgets/ProjectItem.cpp')

diff --git a/launcher/ui/widgets/ProjectItem.cpp b/launcher/ui/widgets/ProjectItem.cpp
new file mode 100644
index 00000000..56ae35fb
--- /dev/null
+++ b/launcher/ui/widgets/ProjectItem.cpp
@@ -0,0 +1,78 @@
+#include "ProjectItem.h"
+
+#include "Common.h"
+
+#include <QIcon>
+#include <QPainter>
+
+ProjectItemDelegate::ProjectItemDelegate(QWidget* parent) : QStyledItemDelegate(parent) {}
+
+void ProjectItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
+{
+    painter->save();
+
+    QStyleOptionViewItem opt(option);
+    initStyleOption(&opt, index);
+
+    auto& rect = opt.rect;
+    auto icon_width = rect.height(), icon_height = rect.height();
+    auto remaining_width = rect.width() - icon_width;
+
+    if (opt.state & QStyle::State_Selected) {
+        painter->fillRect(rect, opt.palette.highlight());
+        painter->setPen(opt.palette.highlightedText().color());
+    } else if (opt.state & QStyle::State_MouseOver) {
+        painter->fillRect(rect, opt.palette.window());
+    }
+
+    {  // Icon painting
+        // Square-sized, occupying the left portion
+        opt.icon.paint(painter, rect.x(), rect.y(), icon_width, icon_height);
+    }
+
+    {  // Title painting
+        auto title = index.data(UserDataTypes::TITLE).toString();
+
+        painter->save();
+
+        auto font = opt.font;
+        if (index.data(UserDataTypes::SELECTED).toBool()) {
+            // Set nice font
+            font.setBold(true);
+            font.setUnderline(true);
+        }
+
+        font.setPointSize(font.pointSize() + 2);
+        painter->setFont(font);
+
+        // On the top, aligned to the left after the icon
+        painter->drawText(rect.x() + icon_width, rect.y() + QFontMetrics(font).height(), title);
+
+        painter->restore();
+    }
+
+    {  // Description painting
+        auto description = index.data(UserDataTypes::DESCRIPTION).toString();
+
+        QTextLayout text_layout(description, opt.font);
+
+        qreal height = 0;
+        auto cut_text = viewItemTextLayout(text_layout, remaining_width, height);
+
+        // Get first line unconditionally
+        description = cut_text.first().second;
+        // Get second line, elided if needed
+        if (cut_text.size() > 1) {
+            if (cut_text.size() > 2)
+                description += opt.fontMetrics.elidedText(cut_text.at(1).second, opt.textElideMode, cut_text.at(1).first);
+            else
+                description += cut_text.at(1).second;
+        }
+
+        // On the bottom, aligned to the left after the icon, and featuring at most two lines of text (with some margin space to spare)
+        painter->drawText(rect.x() + icon_width, rect.y() + rect.height() - 2.2 * opt.fontMetrics.height(), remaining_width,
+                          2 * opt.fontMetrics.height(), Qt::TextWordWrap, description);
+    }
+
+    painter->restore();
+}
-- 
cgit