From 31b504789431d48feb67d8c6c79cc98d4d7df4f0 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Tue, 22 Oct 2019 21:38:04 +0200
Subject: [PATCH] LibGUI: Allow override the font on a per-index basis in
 GListView

This should be ported to all of the GAbstractView subclasses.
---
 Libraries/LibGUI/GAbstractView.cpp | 15 +++++++++++++++
 Libraries/LibGUI/GAbstractView.h   |  2 ++
 Libraries/LibGUI/GListView.cpp     |  3 ++-
 Libraries/LibGUI/GModel.h          |  3 ++-
 4 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/Libraries/LibGUI/GAbstractView.cpp b/Libraries/LibGUI/GAbstractView.cpp
index aea8ada294..0c98a8ffa1 100644
--- a/Libraries/LibGUI/GAbstractView.cpp
+++ b/Libraries/LibGUI/GAbstractView.cpp
@@ -108,3 +108,18 @@ void GAbstractView::notify_selection_changed(Badge<GModelSelection>)
         on_selection_change();
     update();
 }
+
+NonnullRefPtr<Font> GAbstractView::font_for_index(const GModelIndex& index) const
+{
+    if (!model())
+        return font();
+
+    auto font_data = model()->data(index, GModel::Role::Font);
+    if (font_data.is_font())
+        return font_data.as_font();
+
+    auto column_metadata = model()->column_metadata(index.column());
+    if (column_metadata.font)
+        return *column_metadata.font;
+    return font();
+}
diff --git a/Libraries/LibGUI/GAbstractView.h b/Libraries/LibGUI/GAbstractView.h
index 95d6520cde..218d305bb7 100644
--- a/Libraries/LibGUI/GAbstractView.h
+++ b/Libraries/LibGUI/GAbstractView.h
@@ -45,6 +45,8 @@ public:
 
     void notify_selection_changed(Badge<GModelSelection>);
 
+    NonnullRefPtr<Font> font_for_index(const GModelIndex&) const;
+
 protected:
     virtual void did_scroll() override;
     void activate(const GModelIndex&);
diff --git a/Libraries/LibGUI/GListView.cpp b/Libraries/LibGUI/GListView.cpp
index dae6d9ae15..b0aea7f0b0 100644
--- a/Libraries/LibGUI/GListView.cpp
+++ b/Libraries/LibGUI/GListView.cpp
@@ -113,11 +113,12 @@ void GListView::paint_event(GPaintEvent& event)
         }
 
         auto column_metadata = model()->column_metadata(m_model_column);
-        const Font& font = column_metadata.font ? *column_metadata.font : this->font();
+
         Rect row_rect(0, y, content_width(), item_height());
         painter.fill_rect(row_rect, background_color);
         auto index = model()->index(row_index, m_model_column);
         auto data = model()->data(index);
+        auto font = font_for_index(index);
         if (data.is_bitmap()) {
             painter.blit(row_rect.location(), data.as_bitmap(), data.as_bitmap().rect());
         } else if (data.is_icon()) {
diff --git a/Libraries/LibGUI/GModel.h b/Libraries/LibGUI/GModel.h
index 3f2654c3f5..6c3505a26e 100644
--- a/Libraries/LibGUI/GModel.h
+++ b/Libraries/LibGUI/GModel.h
@@ -34,7 +34,8 @@ public:
         Custom,
         ForegroundColor,
         BackgroundColor,
-        Icon
+        Icon,
+        Font,
     };
 
     virtual ~GModel();