[nostalgia/gfx/studio/tilesheeteditor] Add FilePicker to for choosing a Palette

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp

@@ -88,11 +88,11 @@ static ox::Error toPngFile(
 
 TileSheetEditorImGui::TileSheetEditorImGui(studio::StudioContext &sctx, ox::StringParam path):
 		Editor(std::move(path)),
-		m_sctx(sctx),
-		m_tctx(m_sctx.tctx),
-		m_view(m_sctx, itemPath(), *undoStack()),
-		m_model(m_view.model()) {
-	std::ignore = setPaletteSelection();
+		m_sctx{sctx},
+		m_tctx{m_sctx.tctx},
+		m_palPicker{"Palette Chooser", keelCtx(sctx), FileExt_npal},
+		m_view{m_sctx, itemPath(), *undoStack()},
+		m_model{m_view.model()} {
 	// connect signal/slots
 	m_subsheetEditor.inputSubmitted.connect(this, &TileSheetEditorImGui::updateActiveSubsheet);
 	m_exportMenu.inputSubmitted.connect(this, &TileSheetEditorImGui::exportSubhseetToPng);
@@ -132,10 +132,10 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key key, bool down) {
 	if (key == turbine::Key::Escape) {
 		m_subsheetEditor.close();
 		m_exportMenu.close();
+		m_palPicker.close();
 	}
-	auto const popupOpen = m_subsheetEditor.isOpen() || m_exportMenu.isOpen();
 	auto const pal = m_model.pal();
-	if (!popupOpen) {
+	if (ig::mainWinHasFocus() && !m_palPathFocused) {
 		auto const colorCnt = gfx::colorCnt(pal, m_model.palettePage());
 		if (key == turbine::Key::Alpha_D) {
 			m_tool = TileSheetTool::Draw;
@@ -183,9 +183,8 @@ void TileSheetEditorImGui::keyStateChanged(turbine::Key key, bool down) {
 }
 
 void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
-	auto const popupOpen = m_subsheetEditor.isOpen() || m_exportMenu.isOpen();
-	if (!popupOpen && m_tool == TileSheetTool::Select) {
-		if (ImGui::IsKeyDown(ImGuiKey_ModCtrl)) {
+	if (ig::mainWinHasFocus() && m_tool == TileSheetTool::Select) {
+		if (ImGui::IsKeyDown(ImGuiKey_ModCtrl) && !m_palPathFocused) {
 			if (ImGui::IsKeyPressed(ImGuiKey_A)) {
 				auto const&img = m_model.activeSubSheet();
 				m_model.setSelection({{}, {img.columns * TileWidth - 1, img.rows * TileHeight - 1}});
@@ -277,6 +276,11 @@ void TileSheetEditorImGui::draw(studio::StudioContext&) noexcept {
 	ImGui::EndChild();
 	m_subsheetEditor.draw(m_tctx);
 	m_exportMenu.draw(m_tctx);
+	if (auto pal = m_palPicker.draw(m_sctx)) {
+		if (*pal != m_model.palPath()) {
+			oxLogError(m_model.setPalette(*pal));
+		}
+	}
 }
 
 void TileSheetEditorImGui::drawSubsheetSelector(
@@ -437,20 +441,26 @@ void TileSheetEditorImGui::drawTileSheet(ox::Vec2 const&fbSize) noexcept {
 }
 
 void TileSheetEditorImGui::drawPaletteMenu() noexcept {
+	ig::IDStackItem const idStackItem{"PaletteMenu"};
 	auto constexpr comboWidthSub = 62;
 	ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x - comboWidthSub);
 	auto constexpr palTags = ImGuiInputTextFlags_ReadOnly;
-	if (ig::InputText("Palette", m_selectedPalette, palTags)) {
-		oxLogError(m_model.setPalette(m_selectedPalette));
+	if (ig::InputTextWithHint("##Palette", "Path to Palette", m_model.palPath(), palTags)) {
+		oxLogError(m_model.setPalette(m_model.palPath()));
 	}
+	m_palPathFocused = ImGui::IsItemFocused();
 	if (ig::DragDropTarget const dragDropTarget; dragDropTarget) {
 		auto const [ref, err] = ig::getDragDropPayload<studio::FileRef>("FileRef");
 		if (!err && endsWith(ref.path, FileExt_npal)) {
-			if (ref.path != m_selectedPalette) {
+			if (ref.path != m_model.palPath()) {
 				oxLogError(m_model.setPalette(ref.path));
 			}
 		}
 	}
+	ImGui::SameLine();
+	if (ImGui::Button("Browse")) {
+		m_palPicker.open();
+	}
 	auto const pages = m_model.pal().pages.size();
 	if (pages > 1) {
 		ig::IndentStackItem	const indentStackItem{20};
@@ -521,7 +531,6 @@ ox::Error TileSheetEditorImGui::updateActiveSubsheet(ox::StringView const&name,
 }
 
 ox::Error TileSheetEditorImGui::setPaletteSelection() noexcept {
-	m_selectedPalette = m_model.palPath();
 	return {};
 }
 

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditor-imgui.hpp

@@ -9,6 +9,7 @@
 
 #include <glutils/glutils.hpp>
 #include <studio/editor.hpp>
+#include <studio/filepickerpopup.hpp>
 
 #include "tilesheetpixelgrid.hpp"
 #include "tilesheetpixels.hpp"
@@ -46,17 +47,18 @@ class TileSheetEditorImGui: public studio::Editor {
 				constexpr bool isOpen() const noexcept { return m_show; }
 		};
 		static constexpr float s_palViewWidth = 300;
-		ox::String m_selectedPalette;
 		studio::StudioContext &m_sctx;
 		turbine::Context &m_tctx;
 		ox::Vector<ox::String> m_paletteList;
 		SubSheetEditor m_subsheetEditor;
 		ExportMenu m_exportMenu;
+		studio::FilePickerPopup m_palPicker;
 		glutils::FrameBuffer m_framebuffer;
 		TileSheetEditorView m_view;
 		TileSheetEditorModel &m_model;
 		ox::Vec2 m_prevMouseDownPos;
 		TileSheetTool m_tool = TileSheetTool::Draw;
+		bool m_palPathFocused{};
 
 	public:
 		TileSheetEditorImGui(studio::StudioContext &sctx, ox::StringParam path);

src/nostalgia/modules/gfx/src/studio/tilesheeteditor/tilesheeteditormodel.cpp

@@ -4,8 +4,6 @@
 
 
 #include <ox/claw/read.hpp>
-#include <ox/std/algorithm.hpp>
-#include <ox/std/buffer.hpp>
 #include <ox/std/memory.hpp>
 
 #include <turbine/clipboard.hpp>
@@ -86,9 +84,9 @@ void TileSheetEditorModel::copy() {
 	auto cb = ox::make_unique<TileSheetClipboard>();
 	iterateSelectionRows(*m_selection, [&](int const x, int const y) {
 		auto pt = ox::Point{x, y};
-		const auto&s = activeSubSheet();
-		const auto idx = gfx::idx(s, pt);
-		const auto c = getPixel(s, idx);
+		auto const&s = activeSubSheet();
+		auto const idx = gfx::idx(s, pt);
+		auto const c = getPixel(s, idx);
 		pt -= m_selection->a;
 		cb->addPixel(pt, c);
 	});
@@ -149,11 +147,11 @@ size_t TileSheetEditorModel::palettePage() const noexcept {
 }
 
 void TileSheetEditorModel::drawCommand(ox::Point const&pt, std::size_t const palIdx) noexcept {
-	const auto &activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
+	auto const &activeSubSheet = getSubSheet(m_img, m_activeSubsSheetIdx);
 	if (pt.x >= activeSubSheet.columns * TileWidth || pt.y >= activeSubSheet.rows * TileHeight) {
 		return;
 	}
-	const auto idx = gfx::idx(activeSubSheet, pt);
+	auto const idx = gfx::idx(activeSubSheet, pt);
 	if (m_ongoingDrawCommand) {
 		m_updated = m_updated || m_ongoingDrawCommand->append(idx);
 	} else if (getPixel(activeSubSheet, idx) != palIdx) {
@@ -255,14 +253,16 @@ bool TileSheetEditorModel::updated() const noexcept {
 
 ox::Error TileSheetEditorModel::markUpdatedCmdId(studio::UndoCommand const*cmd) noexcept {
 	m_updated = true;
-	const auto cmdId = cmd->commandId();
+	auto const cmdId = cmd->commandId();
 	if (static_cast<CommandId>(cmdId) == CommandId::PaletteChange) {
-		OX_RETURN_ERROR(readObj<Palette>(keelCtx(m_tctx), m_img.defaultPalette).moveTo(m_pal));
-		m_palettePage = ox::min<size_t>(m_pal->pages.size(), 0);
+		if (readObj<Palette>(keelCtx(m_tctx), m_img.defaultPalette).moveTo(m_pal)) {
+			m_pal = keel::AssetRef<Palette>{};
+		}
+		m_palettePage = ox::min<size_t>(pal().pages.size(), 0);
 		paletteChanged.emit();
 	}
-	auto tsCmd = dynamic_cast<const TileSheetCommand*>(cmd);
-	auto idx = validateSubSheetIdx(m_img, tsCmd->subsheetIdx());
+	auto const tsCmd = dynamic_cast<TileSheetCommand const*>(cmd);
+	auto const idx = validateSubSheetIdx(m_img, tsCmd->subsheetIdx());
 	if (idx != m_activeSubsSheetIdx) {
 		setActiveSubsheet(idx);
 	}

src/olympic/studio/applib/src/projectexplorer.cpp

@@ -22,6 +22,10 @@ void ProjectExplorer::fileOpened(ox::StringViewCR path) const noexcept {
 	fileChosen.emit(path);
 }
 
+void ProjectExplorer::fileDeleted(ox::StringViewCR path) const noexcept {
+	deleteItem.emit(path);
+}
+
 void ProjectExplorer::fileContextMenu(ox::StringViewCR path) const noexcept {
 	if (ImGui::BeginPopupContextItem("FileMenu", ImGuiPopupFlags_MouseButtonRight)) {
 		if (ImGui::MenuItem("Delete")) {

src/olympic/studio/applib/src/projectexplorer.hpp

@@ -28,6 +28,8 @@ class ProjectExplorer final: public FileExplorer {
 	protected:
 		void fileOpened(ox::StringViewCR path) const noexcept override;
 
+		void fileDeleted(ox::StringViewCR path) const noexcept override;
+
 		void fileContextMenu(ox::StringViewCR path) const noexcept override;
 
 		void dirContextMenu(ox::StringViewCR path) const noexcept override;

src/olympic/studio/applib/src/studioapp.cpp

@@ -225,7 +225,9 @@ void StudioUI::drawTabs() noexcept {
 				if (m_activeEditorOnLastDraw != e.get()) [[unlikely]] {
 					m_activeEditor->onActivated();
 				}
+				if (open) [[likely]] {
 					e->draw(m_sctx);
+				}
 				m_activeEditorOnLastDraw = e.get();
 			}
 			ImGui::EndTabItem();

src/olympic/studio/modlib/include/studio/filepickerpopup.hpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#pragma once
+
+#include "popup.hpp"
+#include "filetreemodel.hpp"
+
+namespace studio {
+
+class FilePickerPopup {
+
+	private:
+		ox::String m_name;
+		FileExplorer m_explorer;
+		ox::Vector<ox::String> const m_fileExts;
+		bool m_open{};
+
+	public:
+		explicit FilePickerPopup(ox::StringParam name, keel::Context &kctx, ox::StringParam fileExt) noexcept;
+
+		explicit FilePickerPopup(ox::StringParam name, keel::Context &kctx, ox::Vector<ox::String> fileExts) noexcept;
+
+		void refresh() noexcept;
+
+		void open() noexcept;
+
+		void close() noexcept;
+
+		[[nodiscard]]
+		bool isOpen() const noexcept;
+
+		ox::Optional<ox::String> draw(StudioContext &ctx) noexcept;
+
+};
+
+}

src/olympic/studio/modlib/include/studio/filetreemodel.hpp

@@ -15,7 +15,7 @@
 
 namespace studio {
 
-constexpr void safeDelete(class FileTreeModel *m) noexcept;
+constexpr void safeDelete(class FileTreeModel const *m) noexcept;
 
 class FileExplorer: public ox::SignalHandler {
 
@@ -32,8 +32,6 @@ class FileExplorer: public ox::SignalHandler {
 			m_kctx{kctx},
 			m_fileDraggable{fileDraggable} {}
 
-		virtual ~FileExplorer() = default;
-
 		void draw(StudioContext &ctx, ImVec2 const &sz) const noexcept;
 
 		void setModel(ox::UPtr<FileTreeModel> &&model, bool selectRoot = false) noexcept;
@@ -45,6 +43,8 @@ class FileExplorer: public ox::SignalHandler {
 
 		virtual void fileOpened(ox::StringViewCR path) const noexcept;
 
+		virtual void fileDeleted(ox::StringViewCR path) const noexcept;
+
 		void drawFileContextMenu(ox::CStringViewCR path) const noexcept;
 
 		void drawDirContextMenu(ox::CStringViewCR path) const noexcept;
@@ -116,7 +116,7 @@ class FileTreeModel {
 
 };
 
-constexpr void safeDelete(FileTreeModel *m) noexcept {
+constexpr void safeDelete(FileTreeModel const *m) noexcept {
 	delete m;
 }
 

src/olympic/studio/modlib/include/studio/imguiutil.hpp

@@ -155,6 +155,23 @@ TextInput<ox::IString<MaxChars>> InputText(
 	return out;
 }
 
+template<size_t MaxChars = 50>
+TextInput<ox::IString<MaxChars>> InputTextWithHint(
+		ox::CStringViewCR label,
+		ox::CStringViewCR hint,
+		ox::StringViewCR currentText,
+		ImGuiInputTextFlags const flags = 0,
+		ImGuiInputTextCallback const callback = nullptr,
+		void *user_data = nullptr) noexcept {
+	TextInput<ox::IString<MaxChars>> out = {.text = currentText};
+	out.changed = ImGui::InputTextWithHint(
+			label.c_str(), hint.c_str(), out.text.data(), MaxChars + 1, flags, callback, user_data);
+	if (out.changed) {
+		std::ignore = out.text.unsafeResize(ox::strlen(out.text.c_str()));
+	}
+	return out;
+}
+
 template<size_t StrCap>
 bool InputText(
 	ox::CStringViewCR label,

src/olympic/studio/modlib/src/CMakeLists.txt

@@ -2,6 +2,7 @@ add_library(
 	Studio
 		configio.cpp
 		editor.cpp
+		filepickerpopup.cpp
 		filetreemodel.cpp
 		imguiutil.cpp
 		module.cpp

src/olympic/studio/modlib/src/filepickerpopup.cpp

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#include <studio/imguiutil.hpp>
+
+#include <studio/filepickerpopup.hpp>
+
+namespace studio {
+
+FilePickerPopup::FilePickerPopup(
+	ox::StringParam name,
+	keel::Context &kctx,
+	ox::StringParam fileExt) noexcept:
+	m_name{std::move(name)},
+	m_explorer{kctx},
+	m_fileExts{std::move(fileExt)} {
+}
+
+FilePickerPopup::FilePickerPopup(
+	ox::StringParam name,
+	keel::Context &kctx,
+	ox::Vector<ox::String> fileExts) noexcept:
+	m_name{std::move(name)},
+	m_explorer{kctx},
+	m_fileExts{std::move(fileExts)} {
+}
+
+void FilePickerPopup::refresh() noexcept {
+	m_explorer.setModel(buildFileTreeModel(
+		m_explorer,
+		[this](ox::StringViewCR path, ox::FileStat const &s) {
+			auto const [ext, err] = fileExt(path);
+			return
+				s.fileType == ox::FileType::Directory ||
+				(s.fileType == ox::FileType::NormalFile && !err && m_fileExts.contains(ext));
+		},
+		false).or_value(ox::UPtr<FileTreeModel>{}));
+}
+
+void FilePickerPopup::open() noexcept {
+	refresh();
+	m_open = true;
+}
+
+void FilePickerPopup::close() noexcept {
+	m_explorer.setModel(ox::UPtr<FileTreeModel>{});
+	m_open = false;
+}
+
+bool FilePickerPopup::isOpen() const noexcept {
+	return m_open;
+}
+
+ox::Optional<ox::String> FilePickerPopup::draw(StudioContext &ctx) noexcept {
+	ox::Optional<ox::String> out;
+	if (!m_open) {
+		return out;
+	}
+	if (ig::BeginPopup(ctx.tctx, m_name, m_open, {380, 340})) {
+		auto const vp = ImGui::GetContentRegionAvail();
+		m_explorer.draw(ctx, {vp.x, vp.y - 30});
+		if (ig::PopupControlsOkCancel(m_open) == ig::PopupResponse::OK) {
+			auto p = m_explorer.selectedPath();
+			if (p) {
+				out.emplace(*p);
+			}
+			close();
+		}
+		ImGui::EndPopup();
+	}
+	return out;
+}
+
+}

src/olympic/studio/modlib/src/filetreemodel.cpp

@@ -39,6 +39,8 @@ ox::Optional<ox::String> FileExplorer::selectedPath() const {
 
 void FileExplorer::fileOpened(ox::StringViewCR) const noexcept {}
 
+void FileExplorer::fileDeleted(ox::StringViewCR) const noexcept {}
+
 void FileExplorer::drawFileContextMenu(ox::CStringViewCR path) const noexcept {
 	ig::IDStackItem const idStackItem{path};
 	fileContextMenu(path);
@@ -84,7 +86,7 @@ void FileTreeModel::draw(turbine::Context &tctx) const noexcept {
 	auto const selected = m_explorer.selected(this) ? ImGuiTreeNodeFlags_Selected : 0;
 	if (!m_children.empty()) {
 		auto const nodeOpen = ImGui::TreeNodeEx(m_name.c_str(), dirFlags | selected);
-		if (ImGui::IsItemClicked()) {
+		if (ImGui::IsItemActivated() || ImGui::IsItemClicked(1)) {
 			m_explorer.setSelectedNode(this);
 		}
 		ig::IDStackItem const idStackItem{m_name};
@@ -97,11 +99,15 @@ void FileTreeModel::draw(turbine::Context &tctx) const noexcept {
 		}
 	} else {
 		if (ImGui::TreeNodeEx(m_name.c_str(), ImGuiTreeNodeFlags_Leaf | selected)) {
-			if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(0)) {
+			if (ImGui::IsItemActivated() || ImGui::IsItemClicked(1)) {
+				m_explorer.setSelectedNode(this);
+			}
+			if ((ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(0)) ||
+			    (ImGui::IsItemFocused() && ImGui::IsKeyPressed(ImGuiKey_Enter))) {
 				m_explorer.fileOpened(m_fullPath);
 			}
-			if (ImGui::IsItemClicked()) {
-				m_explorer.setSelectedNode(this);
+			if (ImGui::IsItemFocused() && ImGui::IsKeyPressed(ImGuiKey_Delete)) {
+				m_explorer.fileDeleted(m_fullPath);
 			}
 			m_explorer.drawFileContextMenu(m_fullPath);
 			ImGui::TreePop();