Merge pull request #57 from takluyver/pywebview-eg

Add example using Pywebview

examples/pywebview/README.md

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+This is an example [Pywebview](https://github.com/r0x0r/pywebview) application
+built using Pynsist.
+
+First, run `./download.sh` to fetch and unpack the necessary Windows libraries.
+Then build with:
+
+    pynsist installer.cfg
+
+At present, the user must separately install the MS Visual C++ 2010 redistributable,
+because pywin32 is compiled using that.
+
+http://www.microsoft.com/en-us/download/details.aspx?id=14632

examples/pywebview/download.sh

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+#!/bin/bash
+# Download pywin32 for Python 3.5, 64 bit
+set -e
+
+if [ ! -f pywin32.exe ]; then
+  wget -O pywin32.exe https://sourceforge.net/projects/pywin32/files/pywin32/Build%20220/pywin32-220.win-amd64-py3.5.exe
+fi
+
+# Comtypes (this is actually pure Python, but it's Windows only,
+# so it's easiest to get it like this)
+if [ ! -f comtypes.zip ]; then
+  wget -O comtypes.zip https://github.com/enthought/comtypes/archive/1.1.3.zip
+fi
+
+rm -rf pynsist_pkgs
+mkdir pynsist_pkgs
+
+# Unpack pywin32
+td=$(mktemp -d)
+unzip pywin32.exe -d $td || true  # Suppress some warning/error unzipping
+echo "Copying pywin32 files into pynsist_pkgs/"
+cp --recursive $td/PLATLIB/* pynsist_pkgs/
+rm -r $td
+
+# Unpack comtypes
+td=$(mktemp -d)
+unzip comtypes.zip -d $td
+# If comtypes.gen exists, it gets stuck trying to write there; if not, it
+# falls back to %APPDATA%.
+rm -r $td/comtypes-*/comtypes/gen/
+echo "Running 2to3 on comtypes"
+2to3 -wn --no-diffs $td/comtypes-*/comtypes/
+echo "Copying comtypes files into pynsist_pkgs/"
+cp --recursive $td/comtypes-*/comtypes pynsist_pkgs/
+rm -r $td

examples/pywebview/installer.cfg

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+[Application]
+name=Pywebview example
+version=1.0
+entry_point=simple_browser:main
+# Yuck, pywin32 stores modules in odd places, so we need this to get them loaded
+# correctly
+extra_preamble=pywin32_paths.py
+
+[Python]
+version=3.5.1
+bitness=64
+format=bundled
+
+[Include]
+# pywin32 should also be included here, but it contains many pieces in odd
+# locations, so it's probably not simple. When building from Linux, the
+# download.sh script copies the necessary files in.
+packages=comtypes
+  webview

examples/pywebview/pywin32_paths.py

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+sys.path.extend([
+    os.path.join(pkgdir, 'win32'),
+    os.path.join(pkgdir, 'win32', 'lib'),
+    os.path.join(pkgdir, 'Pythonwin'),
+])
+
+# Preload pywintypes and pythoncom
+pwt = os.path.join(pkgdir, 'pywin32_system32', 'pywintypes35.dll')
+pcom = os.path.join(pkgdir, 'pywin32_system32', 'pythoncom35.dll')
+import imp
+imp.load_dynamic('pywintypes', pwt)
+imp.load_dynamic('pythoncom', pcom)

examples/pywebview/simple_browser.py

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+"""
+This example demonstrates how to create a webview window.
+
+Adapted from a pywebview example:
+https://github.com/r0x0r/pywebview/blob/master/examples/simple_browser.py
+"""
+
+import webview
+
+def main():
+    # Create a non-resizable webview window with 800x600 dimensions
+    webview.create_window("Simple browser", "http://pynsist.readthedocs.io/",
+                            width=800, height=600, resizable=False)
+
+if __name__ == '__main__':
+    main()