✨ copy example data to vuegen_gui dir in home directory, lib for png export of altair fig

- address windows pandoc issue: "pandoc: openBinaryFile: does not exist (No such file or directory)"
- add library vl-convert-python needed for altair fig exported as static png

Author: enryH

.github/workflows/cdci.yml

@@ -157,12 +157,12 @@ jobs:
       - name: Build executable
         run: |
           cd gui
-          pyinstaller -n vuegen_gui --collect-all pyvis --collect-all streamlit --collect-all st_aggrid --collect-all customtkinter --collect-all quarto_cli --collect-all plotly --collect-all _plotly_utils --collect-all traitlets --collect-all referencing --collect-all rpds --collect-all tenacity --collect-all pyvis --collect-all pandas --collect-all numpy --collect-all matplotlib --collect-all openpyxl --collect-all xlrd --collect-all nbformat --collect-all nbclient --collect-all altair --collect-all itables --collect-all kaleido --collect-all pyarrow --collect-all dataframe_image --collect-all narwhals --collect-all PIL --add-data ../docs/example_data/Basic_example_vuegen_demo_notebook:example_data/Basic_example_vuegen_demo_notebook --add-data ../docs/images/vuegen_logo.png:. app.py
+          pyinstaller -n vuegen_gui --collect-all pyvis --collect-all streamlit --collect-all st_aggrid --collect-all customtkinter --collect-all quarto_cli --collect-all plotly --collect-all _plotly_utils --collect-all traitlets --collect-all referencing --collect-all rpds --collect-all tenacity --collect-all pyvis --collect-all pandas --collect-all numpy --collect-all matplotlib --collect-all openpyxl --collect-all xlrd --collect-all nbformat --collect-all nbclient --collect-all altair --collect-all itables --collect-all kaleido --collect-all pyarrow --collect-all dataframe_image --collect-all narwhals --collect-all PIL --collect-all vl_convert --add-data ../docs/example_data/Basic_example_vuegen_demo_notebook:example_data/Basic_example_vuegen_demo_notebook --add-data ../docs/images/vuegen_logo.png:. app.py
         # --windowed only for mac, see:
         # https://pyinstaller.org/en/stable/usage.html#building-macos-app-bundles
         # 'Under macOS, PyInstaller always builds a UNIX executable in dist.'
         # --onefile --windowed for Windows?
-        # --collect-all vl_convert --collect-all yaml --collect-all strenum --collect-all jinja2 --collect-all fastjsonschema --collect-all jsonschema --collect-all jsonschema_specifications
+        # --collect-all yaml --collect-all strenum --collect-all jinja2 --collect-all fastjsonschema --collect-all jsonschema --collect-all jsonschema_specifications
         # replace by spec file once done...
       - name: Upload executable
         uses: actions/upload-artifact@v4

gui/Makefile

@@ -36,13 +36,13 @@ bundle:
 	--collect-all referencing \
 	--collect-all rpds \
 	--collect-all tenacity \
+	--collect-all vl_convert \
 	--add-data ../docs/example_data/Basic_example_vuegen_demo_notebook:example_data/Basic_example_vuegen_demo_notebook \
 	--add-data ../docs/images/vuegen_logo.png:. \
 	app.py
 
 
 # jupyter kernel specific:
-# --collect-all vl_convert \
 # --collect-all yaml \
 # --collect-all strenum \
 # --collect-all jinja2 \

gui/app.py

@@ -20,6 +20,7 @@
 """
 
 import os
+import shutil
 import sys
 import tkinter as tk
 import traceback
@@ -59,7 +60,7 @@
 # Path to example data dependend on how the GUI is run
 if getattr(sys, "frozen", False) and hasattr(sys, "_MEIPASS"):
     # PyInstaller bundeled case
-    path_to_dat = (
+    path_to_data_in_bundle = (
         app_path.parent / "example_data/Basic_example_vuegen_demo_notebook"
     ).resolve()
     quarto_bin_path = os.path.join(sys._MEIPASS, "quarto_cli", "bin")
@@ -74,10 +75,24 @@
     # )  # ! requires kernel env with same Python env, but does not really seem to help
     os.environ["PYTHONPATH"] = sys._MEIPASS
     # ([[sys.path[0], sys._MEIPASS])  # does not work when built on GitHub Actions
+    path_to_example_data = (
+        output_dir.parent / "example_data" / "Basic_example_vuegen_demo_notebook"
+    ).resolve()
+    # copy example data to vuegen_gen folder in home directory
+    if not path_to_example_data.exists():
+        shutil.copytree(
+            path_to_data_in_bundle,
+            path_to_example_data,
+            # dirs_exist_ok=True,
+        )
+        messagebox.showinfo(
+            "Info",
+            f"Example data copied to {path_to_example_data}",
+        )
     logo_path = os.path.join(sys._MEIPASS, "vuegen_logo.png")
 elif app_path.parent.name == "gui":
     # should be always the case for GUI run from command line
-    path_to_dat = (
+    path_to_example_data = (
         app_path.parent.parent
         / "docs"
         / "example_data"
@@ -87,7 +102,7 @@
         app_path.parent.parent / "docs" / "images" / "vuegen_logo.png"
     )  # 1000x852 pixels
 else:
-    path_to_dat = "docs/example_data/Basic_example_vuegen_demo_notebook"
+    path_to_example_data = "docs/example_data/Basic_example_vuegen_demo_notebook"
 
 print(f"{_PATH = }")
 ##########################################################################################
@@ -237,7 +252,7 @@ def select_directory():
 )
 ctk_radio_config_1.grid(row=row_count, column=1, padx=20, pady=2)
 
-config_path = tk.StringVar(value=str(path_to_dat))
+config_path = tk.StringVar(value=str(path_to_example_data))
 config_path_entry = customtkinter.CTkEntry(
     app,
     width=400,