From 5cf0357be16f417389303cc3e89892304dc747d6 Mon Sep 17 00:00:00 2001
From: Tobias Christiansen <tobyase@serenityos.org>
Date: Sun, 2 Jan 2022 16:25:54 +0100
Subject: [PATCH] PixelPaint: Create Filter base class

All the filters will need a wrapper around them, and this is going to be
their base class
---
 .../Applications/PixelPaint/CMakeLists.txt    |  1 +
 .../PixelPaint/Filters/Filter.cpp             | 28 ++++++++++++++++
 .../Applications/PixelPaint/Filters/Filter.h  | 33 +++++++++++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 Userland/Applications/PixelPaint/Filters/Filter.cpp
 create mode 100644 Userland/Applications/PixelPaint/Filters/Filter.h

diff --git a/Userland/Applications/PixelPaint/CMakeLists.txt b/Userland/Applications/PixelPaint/CMakeLists.txt
index 48dfa4d781..7b8d44a299 100644
--- a/Userland/Applications/PixelPaint/CMakeLists.txt
+++ b/Userland/Applications/PixelPaint/CMakeLists.txt
@@ -17,6 +17,7 @@ set(SOURCES
     FilterGallery.cpp
     FilterGalleryGML.h
     FilterModel.cpp
+    Filters/Filter.cpp
     Image.cpp
     ImageEditor.cpp
     Layer.cpp
diff --git a/Userland/Applications/PixelPaint/Filters/Filter.cpp b/Userland/Applications/PixelPaint/Filters/Filter.cpp
new file mode 100644
index 0000000000..568a80403d
--- /dev/null
+++ b/Userland/Applications/PixelPaint/Filters/Filter.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2022, Tobias Christiansen <tobyase@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "Filter.h"
+#include <LibGUI/BoxLayout.h>
+#include <LibGUI/Label.h>
+
+namespace PixelPaint {
+
+RefPtr<GUI::Widget> Filter::get_settings_widget()
+{
+    if (!m_settings_widget) {
+        m_settings_widget = GUI::Widget::construct();
+        m_settings_widget->set_layout<GUI::VerticalBoxLayout>();
+
+        auto& name_label = m_settings_widget->add<GUI::Label>(filter_name());
+        name_label.set_text_alignment(Gfx::TextAlignment::TopLeft);
+
+        m_settings_widget->add<GUI::Widget>();
+    }
+
+    return m_settings_widget.ptr();
+}
+
+}
diff --git a/Userland/Applications/PixelPaint/Filters/Filter.h b/Userland/Applications/PixelPaint/Filters/Filter.h
new file mode 100644
index 0000000000..2b03da994e
--- /dev/null
+++ b/Userland/Applications/PixelPaint/Filters/Filter.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2022, Tobias Christiansen <tobyase@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include "../ImageEditor.h"
+#include "../Layer.h"
+#include <LibGUI/Widget.h>
+
+namespace PixelPaint {
+
+class Filter {
+public:
+    virtual void apply() const = 0;
+    virtual RefPtr<GUI::Widget> get_settings_widget();
+
+    virtual StringView filter_name() = 0;
+
+    virtual ~Filter() {};
+
+    Filter(ImageEditor* editor)
+        : m_editor(editor) {};
+
+protected:
+    ImageEditor* m_editor { nullptr };
+    StringView m_filter_name;
+    RefPtr<GUI::Widget> m_settings_widget { nullptr };
+};
+
+}