Add a new tilemap control that replicates its children into a fixed grid.

Use it for the Edit Terrain Object dialog.

src/dialogxml/widgets/tilemap.hpp

@@ -0,0 +1,54 @@
+//
+//  tilemap.hpp
+//  BoE
+//
+//  Created by Celtic Minstrel on 2025-02-01.
+//
+
+#ifndef BoE_DIALOG_TILEMAP_HPP
+#define BoE_DIALOG_TILEMAP_HPP
+
+#include "container.hpp"
+
+/// A tilemap defines a two-dimensional array of data using a repeated template.
+class cTilemap : public cContainer {
+	std::map<std::string,cControl*> controls;
+	size_t rows, cols, spacing = 0, cellWidth, cellHeight;
+	bool manageFormat(eFormat prop, bool set, boost::any* val) override;
+	location getCell(const std::string& id) const;
+	static std::string buildId(const std::string& base, size_t x, size_t y);
+	std::string current_cell;
+	mutable int id_tries = 0;
+public:
+	std::string generateId(const std::string& baseId) const override;
+	bool parseAttribute(ticpp::Attribute& attr, std::string tagName, std::string fname) override;
+	bool parseContent(ticpp::Node& content, int n, std::string tagName, std::string fname, std::string& text) override;
+	void validatePostParse(ticpp::Element& who, std::string fname, const std::set<std::string>& attrs, const std::multiset<std::string>& nodes) override;
+	bool isClickable() const override;
+	bool isFocusable() const override;
+	bool isScrollable() const override;
+	void draw() override;
+	bool hasChild(std::string id) const override;
+	cControl& getChild(std::string id) override;
+	bool hasChild(std::string id, size_t x, size_t y) const;
+	cControl& getChild(std::string id, size_t x, size_t y);
+	bool hasChild(size_t x, size_t y) const;
+	cControl& getChild(size_t x, size_t y);
+	/// Recalculate the tilemap's bounding rect based on its contained controls.
+	void recalcRect() override;
+	/// Adds any fields in this tilemap to the tab order building arrays.
+	/// Meant for internal use.
+	void fillTabOrder(std::vector<int>& specificTabs, std::vector<int>& reverseTabs);
+	/// Create a new tilemap
+	/// @param parent The parent dialog.
+	cTilemap(cDialog& parent);
+	/// @copydoc cControl::getSupportedHandlers
+	///
+	/// @todo Document possible handlers
+	std::set<eDlogEvt> getSupportedHandlers() const override {
+		return {EVT_CLICK, EVT_FOCUS, EVT_DEFOCUS};
+	}
+	void forEach(std::function<void(std::string,cControl&)> callback) override;
+};
+
+#endif