[nostalgia] Add basic support for subsheets

src/nostalgia/core/studio/tilesheeteditor-imgui.cpp

@@ -2,8 +2,6 @@
  * Copyright 2016 - 2022 Gary Talent (gary@drinkingtea.net). All rights reserved.
  */
 
-#include <iostream>
-
 #include <imgui.h>
 
 #include <nostalgia/core/media.hpp>
@@ -32,37 +30,114 @@ void TileSheetEditorImGui::exportFile() {
 }
 
 void TileSheetEditorImGui::cut() {
-	m_tileSheetEditor.cut();
+	model()->cut();
 }
 
 void TileSheetEditorImGui::copy() {
-	m_tileSheetEditor.copy();
+	model()->copy();
 }
 
 void TileSheetEditorImGui::paste() {
-	m_tileSheetEditor.paste();
+	model()->paste();
 }
 
 void TileSheetEditorImGui::draw(core::Context*) noexcept {
 	const auto paneSize = ImGui::GetContentRegionAvail();
 	const auto tileSheetParentSize = ImVec2(paneSize.x - m_palViewWidth, paneSize.y);
 	const auto fbSize = geo::Vec2(tileSheetParentSize.x - 16, tileSheetParentSize.y - 16);
-	ImGui::BeginChild("child1", tileSheetParentSize, true);
-	drawTileSheet(fbSize);
+	ImGui::BeginChild("TileSheetView", tileSheetParentSize, true);
+	{
+		drawTileSheet(fbSize);
+	}
 	ImGui::EndChild();
 	ImGui::SameLine();
-	// draw palette/color picker
-	ImGui::BeginChild("child2", ImVec2(m_palViewWidth - 8, paneSize.y), true);
-	drawPalettePicker();
+	ImGui::BeginChild("Controls", ImVec2(m_palViewWidth - 8, paneSize.y), true);
+	{
+		// draw palette/color picker
+		ImGui::BeginChild("child1", ImVec2(m_palViewWidth - 24, paneSize.y / 2.07f), true);
+		{
+			drawPalettePicker();
+		}
+		ImGui::EndChild();
+		ImGui::BeginChild("child2", ImVec2(m_palViewWidth - 24, paneSize.y / 2.07f), true);
+		{
+			const auto btnSize = ImVec2(18, 18);
+			if (ImGui::Button("+", btnSize)) {
+				auto insertOnIdx = model()->activeSubSheetIdx();
+				const auto &parent = *model()->activeSubSheet();
+				model()->addSubsheet(insertOnIdx);
+				insertOnIdx.emplace_back(parent.subsheets.size() - 1);
+				model()->setActiveSubsheet(insertOnIdx);
+			}
+			ImGui::SameLine();
+			if (ImGui::Button("-", btnSize)) {
+				const auto &activeSubsheetIdx = model()->activeSubSheetIdx();
+				if (activeSubsheetIdx.size() > 0) {
+					model()->rmSubsheet(activeSubsheetIdx);
+				}
+			}
+			TileSheet::SubSheetIdx path;
+			constexpr auto flags = ImGuiTableFlags_RowBg | ImGuiTableFlags_NoBordersInBody;
+			if (ImGui::BeginTable("Subsheets", 3, flags)) {
+				ImGui::TableSetupColumn("Subsheet", ImGuiTableColumnFlags_NoHide);
+				ImGui::TableSetupColumn("Columns", ImGuiTableColumnFlags_WidthFixed, 50);
+				ImGui::TableSetupColumn("Rows", ImGuiTableColumnFlags_WidthFixed, 50);
+				ImGui::TableHeadersRow();
+				drawSubsheetSelector(&m_tileSheetEditor.img().subsheet, &path);
+				ImGui::EndTable();
+			}
+		}
+		ImGui::EndChild();
+	}
 	ImGui::EndChild();
 }
 
+void TileSheetEditorImGui::drawSubsheetSelector(TileSheet::SubSheet *subsheet, TileSheet::SubSheetIdx *path) noexcept {
+	ImGui::TableNextRow(0, 5);
+	using Str = ox::BasicString<100>;
+	auto pathStr = ox::join<Str>("##", *path).value;
+	auto lbl = ox::sfmt<Str>("{}##{}", subsheet->name, pathStr);
+	const auto rowSelected = *path == model()->activeSubSheetIdx();
+	const auto flags = ImGuiTreeNodeFlags_SpanFullWidth
+	                   | ImGuiTreeNodeFlags_OpenOnArrow
+	                   | ImGuiTreeNodeFlags_DefaultOpen
+	                   | (subsheet->subsheets.size() ? 0 : ImGuiTreeNodeFlags_Leaf)
+	                   | (rowSelected ? ImGuiTreeNodeFlags_Selected : 0);
+	ImGui::TableNextColumn();
+	const auto open = ImGui::TreeNodeEx(lbl.c_str(), flags);
+	if (ImGui::IsItemClicked()) {
+		model()->setActiveSubsheet(*path);
+	}
+	if (subsheet->subsheets.size()) {
+		ImGui::TableNextColumn();
+		ImGui::Text("--");
+		ImGui::TableNextColumn();
+		ImGui::Text("--");
+	} else {
+		ImGui::TableNextColumn();
+		ImGui::Text("%d", subsheet->columns);
+		ImGui::TableNextColumn();
+		ImGui::Text("%d", subsheet->rows);
+	}
+	if (open) {
+		for (auto i = 0ul; auto &child : subsheet->subsheets) {
+			path->push_back(i);
+			ImGui::PushID(static_cast<int>(i));
+			drawSubsheetSelector(&child, path);
+			ImGui::PopID();
+			path->pop_back();
+			++i;
+		}
+		ImGui::TreePop();
+	}
+}
+
 studio::UndoStack *TileSheetEditorImGui::undoStack() noexcept {
-	return m_tileSheetEditor.undoStack();
+	return model()->undoStack();
 }
 
 void TileSheetEditorImGui::saveItem() {
-	const auto err = m_tileSheetEditor.model()->saveFile();
+	const auto err = model()->saveFile();
 	if (!err) {
 		this->setUnsavedChanges(false);
 	} else {
@@ -143,8 +218,7 @@ void TileSheetEditorImGui::drawPalettePicker() noexcept {
 	}
 }
 
-ox::Error TileSheetEditorImGui::markUnsavedChanges() noexcept {
-	oxDebug("markUnsavedChanges");
+ox::Error TileSheetEditorImGui::markUnsavedChanges(int) noexcept {
 	setUnsavedChanges(true);
 	return OxError(0);
 }