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#!/usr/bin/env python
# Copyright (C) 2020 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
# This script calls Inkscape to rasterize several images into png files.
# The images end up in the final position of the source tree.
# Each image is generated as normal and high resolution variant.
# Each png file is afterwards optimized with optipng.
import argparse
import os
import re
import subprocess
import sys
import xml.etree.ElementTree as ET
from distutils import spawn
def qtcRoot():
return os.path.abspath(
os.path.join(os.path.dirname(sys.argv[0]), '../../..')).replace('\\', '/')
def svgIDs(svgFile, svgElementFilter):
# The svg element IDs of images to export. They correspond to the
# path and base name of each image in the Qt Creator sources.
svgIDs = []
svgTree = ET.ElementTree()
svgTree.parse(os.path.join(qtcRoot(), svgFile))
svgTreeRoot = svgTree.getroot()
pattern = re.compile(svgElementFilter)
for svgElement in svgTreeRoot.iter():
try:
svgElementID = svgElement.attrib['id']
if '/' in svgElementID and pattern.match(svgElementID):
svgIDs.append(svgElementID)
except Exception:
pass
print("\n==== {} elements found which match {}"
.format(len(svgIDs), svgElementFilter))
return svgIDs
def pngName(svgID, scale):
# File name is relative to qtcRoot()
return svgID + ("" if scale == 1 else "@{}x".format(scale)) + ".png"
def checkDirectories(svgIDs):
invalidDirectories = []
for id in svgIDs:
dirForId = os.path.abspath(os.path.join(qtcRoot(), id, os.pardir))
if not os.path.isdir(dirForId):
invalidDirectories.append(id)
if invalidDirectories:
print("\n==== {} IDs for which the output directory is missing:"
.format(len(invalidDirectories)))
print("\n".join(invalidDirectories))
sys.exit("Output directories are missing.")
def printOutUnexported(svgIDs, scaleFactors):
unexported = []
partiallyExported = []
for id in svgIDs:
exportedCount = 0
for scaleFactor in scaleFactors:
if os.path.isfile(os.path.join(qtcRoot(), pngName(id, scaleFactor))):
exportedCount += 1
if exportedCount == 0:
unexported.append(id)
elif (exportedCount < len(scaleFactors)):
partiallyExported.append(id)
if partiallyExported:
print("\n==== {} IDs for which not each .png is exported:"
.format(len(partiallyExported)))
print("\n".join(partiallyExported))
if unexported:
print("\n==== {} IDs for which all .pngs are missing:"
.format(len(unexported)))
print("\n".join(unexported))
if partiallyExported or unexported:
input("\nPress Enter to continue...")
def exportPngs(svgIDs, svgFile, scaleFactors, inkscape):
inkscapeProcess = subprocess.Popen([inkscape, '--shell'],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=qtcRoot())
actions = ["file-open:" + svgFile]
for id in svgIDs:
for scale in scaleFactors:
actions += [
"export-id:{}".format(id),
"export-id-only",
"export-dpi:{}".format(scale * 96),
"export-filename:{}".format(pngName(id, scale)),
"export-do"
]
actions += ["quit-inkscape"]
actionLine = "; ".join(actions) + "\n"
print("Exporting pngs for {} Ids in {} scale factors."
.format(len(svgIDs), len(scaleFactors)))
inkscapeProcess.communicate(input=actionLine.encode())
def optimizePngs(svgIDs, scaleFactors, optipng):
for id in svgIDs:
for scale in scaleFactors:
png = pngName(id, scale)
print("Optimizing: {}".format(png))
try:
subprocess.check_call([optipng,
"-o7",
"-strip", "all",
png],
stderr=subprocess.DEVNULL,
cwd=qtcRoot())
except subprocess.CalledProcessError:
sys.exit("Failed to optimize {}.".format(png))
def export(svgFile, filter, scaleFactors, inkscape, optipng):
ids = svgIDs(svgFile, filter)
if not ids:
sys.exit("{} does not match any Id.".format(filter))
checkDirectories(ids)
printOutUnexported(ids, scaleFactors)
exportPngs(ids, svgFile, scaleFactors, inkscape)
optimizePngs(ids, scaleFactors, optipng)
def main():
parser = argparse.ArgumentParser(description='Export svg elements to .png '
'files and optimize the png. '
'Requires Inkscape 1.x and optipng in Path.')
parser.add_argument('filter',
help='a RegExp filter for svg element Ids, e.g.: .*device.*')
args = parser.parse_args()
inkscape = spawn.find_executable("inkscape")
if inkscape is None:
sys.exit("Inkscape was not found in Path.")
optipng = spawn.find_executable("optipng")
if optipng is None:
sys.exit("Optipng was not found in Path.")
export("src/tools/icons/qtcreatoricons.svg", args.filter, [1, 2],
inkscape, optipng)
return 0
if __name__ == '__main__':
sys.exit(main())
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