Files
cardvault/cardvault/cv_gtk3/gtk_util.py
2018-02-20 21:17:46 +01:00

177 lines
6.8 KiB
Python

import os
import re
from gi.repository import GdkPixbuf
from zipfile import ZipFile
try:
from PIL import Image
except ImportError as err:
print('PIL imaging library is not installed')
from cv_core.util import CoreConfig
class GTKUtilities:
""" Access to image caches and utilities for use in the GTK application """
# Loaded mana symbols Format: {'B': GDKPixbuf, '3': GDKPixbuf}
mana_icons = {}
# Cache for combined mana cost icons
precon_icon_cache = {}
# Path of Gtk resources relative to cardvault base package
resources_path = os.path.join('cv_gtk3', 'resources')
@staticmethod
def get_path_from_base_dir(*dirs):
return os.path.join(os.path.dirname(os.path.dirname(__file__)), *dirs)
@staticmethod
def get_mana_icons(mana_string):
""" Return the combined mana symbols for a mana string
:param mana_string: String in the format '{3}{U}{B}'
:return: GdkPixbuf containing the combined symbols
"""
if not mana_string:
return
icon_list = re.findall("{(.*?)}", mana_string.replace("/", "-"))
icon_name = "_".join(icon_list)
try:
icon = GTKUtilities.precon_icon_cache[icon_name]
except KeyError:
icon = GTKUtilities.create_mana_icons(mana_string)
GTKUtilities.precon_icon_cache[icon_name] = icon
# Scale icon for display
if icon:
icon = icon.scale_simple(icon.get_width() / 5, icon.get_height() / 5, GdkPixbuf.InterpType.HYPER)
return icon
@staticmethod
def create_mana_icons(mana_string):
# Convert the string to a List
glyphs = re.findall("{(.*?)}", mana_string)
if len(glyphs) == 0:
return
# Compute horizontal size for the final image
size = len(glyphs) * 105
image = Image.new("RGBA", (size, 105))
for index, icon in enumerate(glyphs):
x_pos = index * 105
try:
# Try loading mana icon and converting to PIL.Image for combining
loaded = GTKUtilities.pixbuf_to_image(GTKUtilities.mana_icons[icon])
except KeyError:
print('Mana icon "{}" is not loaded.'.format(icon))
return
image.paste(loaded, (x_pos, 0))
# Save pre build icon file
path = os.path.join(CoreConfig.icon_cache_path, "_".join(glyphs) + ".png")
image.save(path)
try:
pixbuf = GdkPixbuf.Pixbuf.new_from_file(path)
except Exception as ex:
print(ex)
return
return pixbuf
@staticmethod
def pixbuf_to_image(pix):
"""Convert gdkpixbuf to PIL image"""
data = pix.get_pixels()
w = pix.props.width
h = pix.props.height
stride = pix.props.rowstride
mode = "RGB"
if pix.props.has_alpha:
mode = "RGBA"
im = Image.frombytes(mode, (w, h), data, "raw", mode, stride)
return im
@staticmethod
def load_ui_resource(resource_name):
""" Load GUI resource depending on the execution mode (from a directory or from a zip file)
:param resource_name: Name of the glade file
:return: String content of the resource file
"""
if os.path.isdir(os.path.dirname(__file__)):
return GTKUtilities.load_ui_resource_file(os.path.join(GTKUtilities.resources_path, 'gui', resource_name))
else:
zip_path = os.path.dirname(os.path.dirname(__file__))
return GTKUtilities.load_ui_resource_zip(zip_path,
os.path.join(GTKUtilities.resources_path, 'gui', resource_name))
@staticmethod
def load_ui_resource_file(resource_path):
""" LOad GUI resource from file path
:param resource_path: Relative path of the resource based on the cardvault base package
:return: String content of the resource file
"""
full_path = GTKUtilities.get_path_from_base_dir(resource_path)
with open(full_path, 'r') as file:
return file.read()
@staticmethod
def load_ui_resource_zip(archive_file, resource_path):
""" Load GUI resource from a zip archive (for usage in release mode)
:param archive_file: Full path of the archive file
:param resource_path: Path of the resources within the archive
:return: String representation of the file content
"""
with ZipFile(archive_file, 'r') as archive:
return archive.read(resource_path).decode('utf-8')
@staticmethod
def load_icon_cache(icon_path):
""" Get a dictionary with all available mana icons
:param icon_path: Relative path of icon resource files
:return: Dict with icon names and Gdkpixbuf objects
"""
if os.path.isdir(GTKUtilities.get_path_from_base_dir(icon_path)):
return GTKUtilities.load_icon_cache_file(GTKUtilities.get_path_from_base_dir(icon_path))
else:
zip_path = os.path.dirname(os.path.dirname(__file__))
return GTKUtilities.load_icon_cache_zip(zip_path)
@staticmethod
def load_icon_cache_file(icon_path):
""" Load icon cache from absolute paths at file system
:param icon_path: Relative path of icon resource files
:return: Dict with icon names and Gdkpixbuf object
"""
icons = {}
files = os.listdir(icon_path)
for file in files:
try:
pixbuf = GdkPixbuf.Pixbuf.new_from_file(os.path.join(icon_path, file))
# Strip filename extension
icon_name = os.path.splitext(file)[0]
icons[icon_name] = pixbuf
except Exception as ex:
print('Error while loading icon file "{}"'.format(ex))
return icons
@staticmethod
def load_icon_cache_zip(zip_path):
""" Load icon cache from zipped archive
:param zip_path: Full path of the zip archive
:return: Dict with icon names and Gdkpixbuf object
"""
with ZipFile(zip_path, 'r') as archive:
icon_path = os.path.join('cv_gtk3', 'resources', 'mana')
files = [path for path in archive.namelist() if os.path.isfile(path.startswith(icon_path))]
icons = {}
for file in files:
with archive.open(file) as data:
try:
loader = GdkPixbuf.PixbufLoader()
loader.write(data.read())
pixbuf = loader.get_pixbuf()
loader.close()
# Strip filename extension
icon_name = os.path.splitext(file)[0]
icons[icon_name] = pixbuf
except Exception as ex:
print('Error while loading icon file "{0}"\n{1}'.format(file, ex))
return icons