229 lines
8.9 KiB
Python
229 lines
8.9 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# Allows saving (TODO: and loading) CSS gradient files
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# Copyright (C) 2011 João S. O. Bueno <gwidion@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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# Currently this exports all color segments as RGB linear centered segments.
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# TODO: Respect gradient alpha, off-center segments, different blending
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# functions and HSV colors
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import gi
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gi.require_version('Pika', '3.0')
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from gi.repository import Pika
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gi.require_version('PikaUi', '3.0')
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from gi.repository import PikaUi
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from gi.repository import GObject
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from gi.repository import GLib
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from gi.repository import Gio
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gi.require_version('Gtk', '3.0')
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from gi.repository import Gtk
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import time
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import sys
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def N_(message): return message
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def _(message): return GLib.dgettext(None, message)
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w3c_template = """background-image: linear-gradient(top, %s);\n"""
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moz_template = """background-image: -moz-linear-gradient(center top, %s);\n"""
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webkit_template = """background-image: -webkit-gradient(linear, """ \
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"""left top, left bottom, %s);\n"""
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color_to_html = lambda c: "rgb(%d,%d,%d)" % (c.r, c.g, c.b)
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def format_text(text):
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counter = 0
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new_text = []
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for token in text.split(","):
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if counter + len(token) > 77:
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token = "\n " + token
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counter = 4
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new_text.append(token)
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if "\n" in token:
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counter = len(token.rsplit("\n")[-1]) + 1
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else:
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counter += len(token) + 1
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return ",".join(new_text)
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def gradient_css_save(procedure, config, data):
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runmode = config.get_property("run-mode")
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if runmode == Pika.RunMode.INTERACTIVE:
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PikaUi.init('python-fu-gradient-save-as-css')
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dialog = PikaUi.ProcedureDialog(procedure=procedure, config=config)
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file = None
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# Add gradient button
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dialog.fill (["gradient"])
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# UI for the file parameter
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# from histogram-export.py
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vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL,
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homogeneous=False, spacing=10)
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dialog.get_content_area().add(vbox)
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vbox.show()
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grid = Gtk.Grid()
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grid.set_column_homogeneous(False)
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grid.set_border_width(10)
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grid.set_column_spacing(10)
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grid.set_row_spacing(10)
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vbox.add(grid)
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grid.show()
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def choose_file(widget):
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if file_chooser_dialog.run() == Gtk.ResponseType.OK:
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if file_chooser_dialog.get_file() is not None:
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config.set_property("file", file_chooser_dialog.get_file())
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file_entry.set_text(file_chooser_dialog.get_file().get_path())
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file_chooser_dialog.hide()
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file_chooser_button = Gtk.Button.new_with_mnemonic(label=_("_File..."))
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grid.attach(file_chooser_button, 0, 0, 1, 1)
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file_chooser_button.show()
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file_chooser_button.connect("clicked", choose_file)
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file_entry = Gtk.Entry.new()
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grid.attach(file_entry, 1, 0, 1, 1)
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file_entry.set_width_chars(40)
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file_entry.set_placeholder_text(_("Choose CSS file..."))
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if config.get_property ("file") != None:
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file = config.get_property("file")
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if file is not None:
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file_entry.set_text(file.get_path())
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file_entry.show()
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use_header_bar = Gtk.Settings.get_default().get_property("gtk-dialogs-use-header")
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file_chooser_dialog = Gtk.FileChooserDialog(use_header_bar=use_header_bar,
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title=_("Save as CSS file..."),
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action=Gtk.FileChooserAction.SAVE)
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file_chooser_dialog.add_button(_("_Cancel"), Gtk.ResponseType.CANCEL)
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file_chooser_dialog.add_button(_("_OK"), Gtk.ResponseType.OK)
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#Connect config so reset works on custom widget
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def gradient_reset (*args):
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if len(args) >= 2:
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if config.get_property("file") is not None and config.get_property("file").get_path() != file_entry.get_text():
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file_entry.set_text(config.get_property("file").get_path())
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else:
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file_entry.set_text("")
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config.connect("notify::gradient", gradient_reset)
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config.connect("notify::file", gradient_reset)
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if not dialog.run():
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dialog.destroy()
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return procedure.new_return_values(Pika.PDBStatusType.CANCEL, GLib.Error())
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else:
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file = Gio.file_new_for_path(file_entry.get_text())
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#Save configs for non-connected UI element
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config.set_property ("file", file)
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dialog.destroy()
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gradient = config.get_property("gradient")
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file = config.get_property("file")
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if file is None:
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error = 'No file given'
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return procedure.new_return_values(Pika.PDBStatusType.CALLING_ERROR,
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GLib.Error(error))
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stops = []
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wk_stops = []
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n_segments = gradient.get_number_of_segments()
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last_stop = None
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for index in range(n_segments):
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success, lcolor, lopacity = gradient.segment_get_left_color(index)
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success, rcolor, ropacity = gradient.segment_get_right_color(index)
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success, lpos = gradient.segment_get_left_pos(index)
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success, rpos = gradient.segment_get_right_pos(index)
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lstop = color_to_html(lcolor) + " %d%%" % int(100 * lpos)
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wk_lstop = "color-stop(%.03f, %s)" %(lpos, color_to_html(lcolor))
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if lstop != last_stop:
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stops.append(lstop)
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wk_stops.append(wk_lstop)
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rstop = color_to_html(rcolor) + " %d%%" % int(100 * rpos)
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wk_rstop = "color-stop(%.03f, %s)" %(rpos, color_to_html(rcolor))
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stops.append(rstop)
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wk_stops.append(wk_rstop)
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last_stop = rstop
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final_text = w3c_template % ", ".join(stops)
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final_text += moz_template % ",".join(stops)
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final_text += webkit_template % ",".join(wk_stops)
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success, etag = file.replace_contents(bytes(format_text(final_text), encoding='utf-8'),
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etag=None,
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make_backup=False,
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flags=Gio.FileCreateFlags.REPLACE_DESTINATION,
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cancellable=None)
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if success:
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return procedure.new_return_values(Pika.PDBStatusType.SUCCESS, GLib.Error())
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else:
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return procedure.new_return_values(Pika.PDBStatusType.EXECUTION_ERROR,
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GLib.Error('File saving failed: {}'.format(file.get_path())))
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class GradientsSaveAsCSS (Pika.PlugIn):
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## Parameters ##
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__gproperties__ = {
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"run-mode": (Pika.RunMode,
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_("Run mode"),
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_("The run mode"),
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Pika.RunMode.NONINTERACTIVE,
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GObject.ParamFlags.READWRITE),
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"gradient": (Pika.Gradient,
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_("_Gradient to use"), "",
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GObject.ParamFlags.READWRITE),
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"file": (Gio.File,
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_("_File"), None,
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GObject.ParamFlags.READWRITE),
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}
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## PikaPlugIn virtual methods ##
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def do_set_i18n(self, procname):
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return True, 'pika30-python', None
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def do_query_procedures(self):
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return [ 'gradient-save-as-css' ]
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def do_create_procedure(self, name):
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procedure = Pika.Procedure.new(self, name,
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Pika.PDBProcType.PLUGIN,
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gradient_css_save, None)
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if name == 'gradient-save-as-css':
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procedure.set_documentation (_("Creates a new palette from a given gradient"),
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_("Creates a new palette from a given gradient"),
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name)
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procedure.set_menu_label(_("Save Gradient as CSS..."))
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procedure.set_attribution("Joao S. O. Bueno",
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"(c) GPL V3.0 or later",
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"2011")
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procedure.add_menu_path('<Gradients>')
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procedure.add_argument_from_property(self, "run-mode")
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procedure.add_argument_from_property(self, "gradient")
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procedure.add_argument_from_property(self, "file")
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return procedure
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Pika.main(GradientsSaveAsCSS.__gtype__, sys.argv)
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