[nostalgia/core/studio] Add scrolling support to TileSheetEditor

src/nostalgia/core/studio/tilesheeteditor.hpp

@@ -100,13 +100,13 @@ class TileSheetEditor: public studio::Editor {
 		ox::String m_itemPath;
 		ox::String m_itemName;
 		glutils::FrameBuffer m_framebuffer;
-		TileSheetGrid m_pixelGrid;
-		TileSheetPixels m_pixels;
+		TileSheetGrid m_pixelGridDrawer;
+		TileSheetPixels m_pixelsDrawer;
 		bool m_updated = false;
 		NostalgiaGraphic m_img;
 		AssetRef<NostalgiaPalette> m_pal;
-		Context *m_ctx = nullptr;
 		float m_pixelSizeMod = 1;
+		ImVec2 m_scrollOffset;
 
 	public:
 		TileSheetEditor(Context *ctx, const ox::String &path);
@@ -132,6 +132,8 @@ class TileSheetEditor: public studio::Editor {
 	protected:
 		void saveItem() override;
 
+		void getFillPixels(bool *pixels, common::Point pt, int oldColor) const;
+
 	private:
 		void setPalette();
 
@@ -145,6 +147,8 @@ class TileSheetEditor: public studio::Editor {
 		[[nodiscard]]
 		ox::String palettePath(const ox::String &palettePath) const;
 
+		void clickPixel(const ImVec2 &paneSize, float x, float y) noexcept;
+
 	// slots
 	public:
 		ox::Error colorSelected() noexcept;