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brusheditor.py
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brusheditor.py
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# -*- coding: utf-8 -*-
# This file is part of MyPaint.
# Copyright (C) 2014-2018 by the MyPaint Development Team.
# Copyright (C) 2007-2013 by Martin Renold <martinxyz@gmx.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
"""Brush editor"""
# Imports:
from __future__ import division, print_function
import os
import logging
from lib.gibindings import Gtk
from lib.gibindings import Pango
from lib.gibindings import GLib
from lib.gibindings import GdkPixbuf
from lib.gettext import C_
from lib import brushsettings
from lib.pycompat import iteritems, itervalues
import lib.brush
from . import dialogs
from . import brushmanager
from .builderhacks import add_objects_from_template_string
from .windowing import SubWindow
# The widget class needs to be in scope before it is
# instantiated via the loading of the glade file.
from .sliderwidget import InputSlider # noqa
logger = logging.getLogger(__name__)
# UI constants:
_TMPL_LAYOUTS = [
(0, 0, 1, 1, "by{name}_label"),
(1, 0, 1, 1, "by{name}_expander_button"),
(2, 0, 1, 1, "by{name}_scale"),
(3, 0, 1, 1, "by{name}_reset_button"),
(2, 2, 2, 1, "by{name}_curve_grid"),
]
# Class definitions:
class BrushEditorWindow (SubWindow):
"""Window containing the brush settings editor"""
# Class constants:
_UI_DEFINITION_FILE = "brusheditor.glade"
_LISTVIEW_CNAME_COLUMN = 0
_LISTVIEW_DISPLAYNAME_COLUMN = 1
_LISTVIEW_IS_SELECTABLE_COLUMN = 2
_LISTVIEW_FONT_WEIGHT_COLUMN = 3
_INPUTS_ORDER = [
"pressure",
"random",
"stroke",
"speed1",
"speed2",
"direction",
"direction_angle",
"tilt_ascension",
"tilt_declination",
"tilt_declinationx",
"tilt_declinationy",
"attack_angle",
"barrel_rotation",
"gridmap_x",
"gridmap_y",
"viewzoom",
"brush_radius",
"custom",
]
# Construction:
def __init__(self):
app = None
if __name__ != '__main__':
from gui.application import get_app
app = get_app()
self._brush = app.brush
bm = app.brushmanager
bm.brush_selected += self.brush_selected_cb
else:
self._brush = lib.brush.BrushInfo()
self._brush.load_defaults()
SubWindow.__init__(self, app, key_input=True)
# Tracking vars for updating the treestore in response to
# brush setting changes and loading new brushes.
self._treestore = None
self._setting_treepath = {} # {cname: Gtk.TreePath}, path for setting
self._group_treepath = {} # {groupid: Gtk.TreePath}, path for group
self._setting_group = {} # {cname: groupid}, group containing setting
# Adjusters: may be shared with those of the app
self._base_adj = {} #: setting cname => base value adj
self._input_y_adj = {} #: input name => scale y range (+-) adj
self._input_xmin_adj = {} #: input name => scale x min adj
self._input_xmax_adj = {} #: input name => scale x min adj
self._disable_input_adj_changed_cb = False
self._init_adjustments()
self.set_title(C_(
"brush settings editor: subwindow title",
"Brush Settings Editor",
))
self._setting = None
self._builder = Gtk.Builder()
self._builder.set_translation_domain("mypaint")
self._build_ui()
self.connect_after("show", self._post_show_cb)
self.connect('button-press-event', self._clear_focus)
editor = self._builder.get_object("brush_editor")
self.add(editor)
self._brush.observers.append(self.brush_modified_cb)
self._live_update_idle_cb_id = None
self._updating_metadata_ui = False
self.set_default_size(1000, 800)
def _clear_focus(self, *args):
self.set_focus(None)
def _init_adjustments(self):
"""Initializes adjustments for the scales used internally
When running as part of the MyPaint app, the brush setting ones are
shared with it.
"""
# Brush setting base values
if self.app:
for s in brushsettings.settings_visible:
adj = self.app.brush_adjustment[s.cname]
self._base_adj[s.cname] = adj
# The application instance manages value-changed callbacks itself.
else:
for s in brushsettings.settings_visible:
adj = Gtk.Adjustment(value=s.default,
lower=s.min, upper=s.max,
step_increment=0.01, page_increment=0.1)
self._base_adj[s.cname] = adj
changed_cb = self._testmode_base_value_adj_changed_cb
for cname, adj in iteritems(self._base_adj):
adj.connect('value-changed', changed_cb, cname)
# Per-input scale maxima and minima
for inp in brushsettings.inputs:
name = inp.name
adj = Gtk.Adjustment(value=1.0 / 4.0, lower=-1.0, upper=1.0,
step_increment=0.01, page_increment=0.1)
adj.connect("value-changed", self.input_adj_changed_cb, inp)
self._input_y_adj[name] = adj
lower = -20.0
upper = +20.0
# Pre-libmypaint split, the limits were read from json and could be
# None. Now that cannot be checked directly, so instead check if
# the limits are extreme (in libmypaint, they are set to +-FLT_MAX)
if abs(inp.hard_min) < 1e16:
lower = inp.hard_min
if abs(inp.hard_max) < 1e16:
upper = inp.hard_max
adj = Gtk.Adjustment(value=inp.soft_min,
lower=lower, upper=upper - 0.1,
step_increment=0.01, page_increment=0.1)
adj.connect("value-changed", self.input_adj_changed_cb, inp)
self._input_xmin_adj[name] = adj
adj = Gtk.Adjustment(value=inp.soft_max,
lower=lower + 0.1, upper=upper,
step_increment=0.01, page_increment=0.1)
adj.connect("value-changed", self.input_adj_changed_cb, inp)
self._input_xmax_adj[name] = adj
def _build_ui(self):
"""Builds the UI from ``brusheditor.glade``"""
ui_dir = os.path.dirname(os.path.abspath(__file__))
ui_path = os.path.join(ui_dir, self._UI_DEFINITION_FILE)
with open(ui_path, 'r') as ui_fp:
ui_xml = ui_fp.read()
self._builder.add_from_string(ui_xml)
self._populate_inputs(ui_xml)
self._populate_settings_treestore()
self._builder.connect_signals(self)
for inp in brushsettings.inputs:
grid = self._builder.get_object("by%s_curve_grid" % inp.name)
GLib.idle_add(grid.hide)
curve = self._builder.get_object("by%s_curve" % inp.name)
def _curve_changed_cb(curve, i=inp):
self._update_brush_from_input_widgets(i)
curve.changed_cb = _curve_changed_cb
btn = self._builder.get_object("by%s_reset_button" % inp.name)
btn.connect("clicked", self.input_adj_reset_button_clicked_cb, inp)
# Certain actions must be coordinated via a real app instance
if not self.app:
action_buttons = [
"clone_button",
"rename_button",
"edit_icon_button",
"delete_button",
"live_update_checkbutton",
"save_button"
]
for b_name in action_buttons:
w = self._builder.get_object(b_name)
w.set_sensitive(False)
def _populate_inputs(self, ui_xml):
# Grid repacking magic for the templated stuff
# XXX FRAGILE
# It would be nice to use the template's own left-attach, top-attach,
# width and height child properties to replicate its layout as
# specified, but unfortunately the current versions of PyGI are all
# broken in one way or another with respect to getting container child
# properties. So we fudge it until upstream fix
# https://bugzilla.gnome.org/show_bug.cgi?id=685076
group_start_row = 1
grid = self._builder.get_object("setting_dynamics_editor_grid")
# Extract the relative layout and pattern of by-input widgets
group_step = 0
tmpl_objs = []
for x, y, w, h, tmpl_id in _TMPL_LAYOUTS:
tmpl_obj = self._builder.get_object(tmpl_id)
group_step = max(group_step, y + h)
tmpl_objs.append(tmpl_obj)
# Remove the "originals": they're not useful in themselves
for tmpl_obj in tmpl_objs:
grid.remove(tmpl_obj)
# Generate lots of clones, one group per brush input
for input_id in self._INPUTS_ORDER:
i = brushsettings.inputs_dict[input_id]
params = dict(dname=i.dname, name=i.name, tooltip=i.tooltip)
object_ids = [layout[-1] for layout in _TMPL_LAYOUTS]
widgets = add_objects_from_template_string(self._builder, ui_xml,
object_ids, params)
for layout, widget in zip(_TMPL_LAYOUTS, widgets):
x, y, w, h, tmpl_id = layout
y += group_start_row
grid.attach(widget, x, y, w, h)
if tmpl_id == "by{name}_curve_grid":
widget.hide()
group_start_row += group_step
label = self._builder.get_object("by%s_label" % i.name)
label.set_tooltip_text(i.tooltip)
btn = self._builder.get_object("by%s_expander_button" % i.name)
btn.__input = i
# Hook up curve max and min adjustments
cb = self._update_axis_label
fmt = "%+.2f"
# Y axis
scale = self._builder.get_object("by%s_scale" % i.name)
scale_adj = self._input_y_adj[i.name]
scale_lbl = self._builder.get_object("by%s_ymax_label" % i.name)
scale_adj.connect("value-changed", cb, scale_lbl, fmt, False)
cb(scale_adj, scale_lbl, fmt, False)
scale_lbl = self._builder.get_object("by%s_ymin_label" % i.name)
scale_adj.connect("value-changed", cb, scale_lbl, fmt, True)
cb(scale_adj, scale_lbl, fmt, True)
scale.set_adjustment(scale_adj)
# X axis: min
sbut = self._builder.get_object("by%s_xmin_scalebutton" % i.name)
sbut_lbl = self._builder.get_object("by%s_xmin_label" % i.name)
sbut_adj = self._input_xmin_adj[i.name]
sbut_adj.connect("value-changed", cb, sbut_lbl, fmt, False)
cb(sbut_adj, sbut_lbl, fmt, False)
sbut.set_adjustment(sbut_adj)
# X axis: max
sbut = self._builder.get_object("by%s_xmax_scalebutton" % i.name)
sbut_lbl = self._builder.get_object("by%s_xmax_label" % i.name)
sbut_adj = self._input_xmax_adj[i.name]
sbut_adj.connect("value-changed", cb, sbut_lbl, fmt, False)
cb(sbut_adj, sbut_lbl, fmt, False)
sbut.set_adjustment(sbut_adj)
def _update_axis_label(self, adj, label, strfmt, negate):
"""Updates a label widget with an adjustment value when it changes"""
value = adj.get_value()
if negate:
value *= -1
label.set_text(strfmt % (value,))
def _populate_settings_treestore(self):
# Populate the treestore
store = self._builder.get_object("settings_treestore")
root_iter = store.get_iter_first()
self._treestore = store
# Editable string fields
# Columns: [cname, displayname, is_selectable, font_weight]
row_data = [
None,
C_("brush settings list: brush metadata texts group", "About"),
True,
Pango.Weight.NORMAL,
]
group_iter = store.append(root_iter, row_data)
# Groups for settings.
groups = [
{
'id': 'experimental',
'title': C_(
'brush settings list: setting group',
'Experimental',
),
'settings': [],
}, {
'id': 'basic',
'title': C_(
'brush settings list: setting group',
'Basic',
),
'settings': [
'radius_logarithmic',
'radius_by_random',
'hardness',
'snap_to_pixel',
'anti_aliasing',
'eraser',
'offset_by_random',
'elliptical_dab_angle',
'elliptical_dab_ratio',
'direction_filter',
'pressure_gain_log',
],
}, {
'id': 'opacity',
'title': C_(
'brush settings list: setting group',
'Opacity',
),
'settings': [
'opaque',
'opaque_multiply',
'opaque_linearize',
'lock_alpha',
],
}, {
'id': 'dabs',
'title': C_(
'brush settings list: setting group',
'Dabs',
),
'settings': [
'dabs_per_basic_radius',
'dabs_per_actual_radius',
'dabs_per_second',
],
}, {
'id': 'smudge',
'title': C_(
'brush settings list: setting group',
'Smudge',
),
'settings': [
'smudge',
'smudge_length',
'smudge_length_log',
'smudge_radius_log',
'smudge_transparency',
'smudge_bucket'
],
}, {
'id': 'speed',
'title': C_(
'brush settings list: setting group',
'Speed',
),
'settings': [
'speed1_slowness',
'speed2_slowness',
'speed1_gamma',
'speed2_gamma',
'offset_by_speed',
'offset_by_speed_slowness',
],
}, {
'id': 'offsets',
'title': C_(
'brush settings list: setting group',
'Directional Offsets',
),
'settings': [
'offset_multiplier',
'offset_angle_adj',
'offset_x',
'offset_y',
'offset_angle',
'offset_angle_2',
'offset_angle_asc',
'offset_angle_2_asc',
'offset_angle_view',
'offset_angle_2_view',
],
}, {
'id': 'tracking',
'title': C_(
'brush settings list: setting group',
'Tracking',
),
'settings': [
'slow_tracking',
'slow_tracking_per_dab',
'tracking_noise',
],
}, {
'id': 'stroke',
'title': C_(
'brush settings list: setting group',
'Stroke',
),
'settings': [
'stroke_threshold',
'stroke_duration_logarithmic',
'stroke_holdtime',
],
}, {
'id': 'color',
'title': C_(
'brush settings list: setting group',
'Color',
),
'settings': [
'paint_mode',
'change_color_h',
'change_color_l',
'change_color_hsl_s',
'change_color_v',
'change_color_hsv_s',
'restore_color',
'colorize',
'posterize',
'posterize_num',
],
}, {
'id': 'gridmap',
'title': C_(
'brush settings list: setting group',
'GridMap',
),
'settings': [
'gridmap_scale',
'gridmap_scale_x',
'gridmap_scale_y',
],
}, {
'id': 'custom',
'title': C_(
'brush settings list: setting group',
'Custom',
),
'settings': [
'custom_input',
'custom_input_slowness'
],
}
]
hidden_settings = ['color_h', 'color_s', 'color_v']
# Add new settings to the "experimental" group
grouped_settings = set(hidden_settings)
for g in groups:
grouped_settings.update(g['settings'])
for s in brushsettings.settings:
n = s.cname
if n not in grouped_settings:
groups[0]['settings'].append(n)
logger.warning('Setting %r should be added to a group', n)
# Hide experimental group if empty
if not groups[0]['settings']:
groups.pop(0)
# Groups to open by default
open_paths = []
open_ids = set(["experimental", "basic"])
# Add groups to the treestore
for group_num, group in enumerate(groups):
group_id = group["id"]
# Columns: [cname, displayname, is_selectable, font_weight]
row_data = [None, group["title"], False, Pango.Weight.NORMAL]
group_iter = store.append(root_iter, row_data)
group_path = store.get_path(group_iter)
self._group_treepath[group_id] = group_path
for i, cname in enumerate(group['settings']):
self._setting_group[cname] = group_id
s = brushsettings.settings_dict[cname]
row_data = [cname, s.name, True, Pango.Weight.NORMAL]
setting_iter = store.append(group_iter, row_data)
setting_path = store.get_path(setting_iter)
self._setting_treepath[cname] = setting_path
if group_id in open_ids:
open_paths.append([group_num + 1])
# Connect signals and handler functions
v = self._builder.get_object("settings_treeview")
sel = v.get_selection()
sel.set_select_function(self._settings_treeview_selectfunc, None)
# Select the first (description)
sel.select_iter(store.get_iter_first())
# Process the paths-to-open
for path in open_paths:
v.expand_to_path(Gtk.TreePath(path))
def _post_show_cb(self, widget):
self._current_setting_changed()
self._update_brush_header()
self._update_setting_ui(expanders=True)
self._update_metadata_ui()
# Main action buttons:
def save_button_clicked_cb(self, button):
"""Save the current brush settings (overwrites)"""
bm = self.app.brushmanager
b = bm.selected_brush
if not b.name:
msg = C_(
'brush settings editor: save brush: error message',
'No brush selected, please use “Add As New” instead.',
)
dialogs.error(self, msg)
return
b.brushinfo = self.app.brush.clone()
b.save()
self._mark_all_settings_unmodified_in_treeview()
self._update_brush_header(modified=False)
def live_update_checkbutton_toggled_cb(self, checkbutton):
"""Realtime update of last stroke with the current brush settings"""
self._queue_live_update()
def edit_icon_button_clicked_cb(self, button):
logger.info("Editing icon for current brush")
action = self.app.find_action("BrushIconEditorWindow")
action.activate()
def rename_button_clicked_cb(self, button):
"""Rename the current brush; user is prompted for a new name"""
bm = self.app.brushmanager
src_brush = bm.selected_brush
if not src_brush.name:
dialogs.error(self, C_(
'brush settings editor: rename brush: error message',
'No brush selected!',
))
return
src_name_pp = src_brush.name.replace('_', ' ')
dst_name = dialogs.ask_for_name(
self,
C_(
"brush settings editor: rename brush: dialog title",
"Rename Brush",
),
src_name_pp,
)
if not dst_name:
return
dst_name = dst_name.replace(' ', '_')
# ensure we don't overwrite an existing brush by accident
dst_deleted = None
for group, brushes in iteritems(bm.groups):
for b2 in brushes:
if b2.name == dst_name:
if group == brushmanager.DELETED_BRUSH_GROUP:
dst_deleted = b2
else:
msg = C_(
'brush settings editor: '
'rename brush: error message',
'A brush with this name already exists!',
)
dialogs.error(self, msg)
return
logger.info("Renaming brush %r -> %r", src_brush.name, dst_name)
if dst_deleted:
deleted_group = brushmanager.DELETED_BRUSH_GROUP
deleted_brushes = bm.get_group_brushes(deleted_group)
deleted_brushes.remove(dst_deleted)
bm.brushes_changed(deleted_brushes)
# save src as dst
src_name = src_brush.name
src_brush.name = dst_name
src_brush.save()
src_brush.name = src_name
# load dst
dst_brush = brushmanager.ManagedBrush(bm, dst_name, persistent=True)
dst_brush.load()
# Replace src with dst, but keep src in the deleted list if it
# is a stock brush
self._delete_brush(src_brush, replacement=dst_brush)
bm.select_brush(dst_brush)
def delete_button_clicked_cb(self, button):
"""Deletes the current brush, with a confirmation dialog"""
bm = self.app.brushmanager
b = bm.selected_brush
if not b.name:
dialogs.error(self, C_(
'brush settings editor: delete brush: error message',
'No brush selected!',
))
return
b_name_pp = b.name.replace('_', ' ')
msg = C_(
"brush settings editor: delete brush: confirm dialog question",
"Really delete brush “{brush_name}” from disk?",
).format(
brush_name = b_name_pp,
)
if not dialogs.confirm(self, msg):
return
bm.select_brush(None)
self._delete_brush(b, replacement=None)
def clone_button_clicked_cb(self, button):
"""Create and save a new brush based on the current working brush"""
bm = self.app.brushmanager
# First, clone and save to disk. Set a null name to avoid a
# mis-highlight in brush selectors.
b = bm.selected_brush.clone(name=None) # ManagedBrush with preview
b.brushinfo = self._brush.clone() # current unsaved settings
b.brushinfo.set_string_property("parent_brush_name", None)
b.save()
# Put in the "New" group, and notify that the group has changed
group = brushmanager.NEW_BRUSH_GROUP
brushes = bm.get_group_brushes(group)
brushes.insert(0, b)
b.persistent = True # Brush was saved
bm.brushes_changed(brushes)
# Highlight the new brush
bm.select_brush(b)
# Pretend that the active painting brush is a child of the new clone,
# for the sake of the strokemap and strokes drawn immediately after
# cloning.
self.app.brush.set_string_property("parent_brush_name", b.name)
# Reveal the added group if it's hidden
ws = self.app.workspace
ws.reveal_tool_widget("MyPaintBrushGroupTool", (group,))
# Utility functions for managing curves:
def _get_brushpoints_from_curvewidget(self, inp):
scale_y_adj = self._input_y_adj[inp.name]
curve_widget = self._builder.get_object("by%s_curve" % inp.name)
scale_y = scale_y_adj.get_value()
if not scale_y:
return []
brush_points = [self._point_widget2real(p, inp)
for p in curve_widget.points]
nonzero = [True for x, y in brush_points if y != 0]
if not nonzero:
return []
return brush_points
def _point_widget2real(self, p, inp):
x, y = p
scale_y_adj = self._input_y_adj[inp.name]
xmax_adj = self._input_xmax_adj[inp.name]
xmin_adj = self._input_xmin_adj[inp.name]
scale_y = scale_y_adj.get_value()
xmax = xmax_adj.get_value()
xmin = xmin_adj.get_value()
scale_x = xmax - xmin
x = xmin + (x * scale_x)
y = (0.5 - y) * 2.0 * scale_y
return (x, y)
def _point_real2widget(self, p, inp):
x, y = p
scale_y_adj = self._input_y_adj[inp.name]
xmax_adj = self._input_xmax_adj[inp.name]
xmin_adj = self._input_xmin_adj[inp.name]
scale_y = scale_y_adj.get_value()
xmax = xmax_adj.get_value()
xmin = xmin_adj.get_value()
scale_x = xmax - xmin
assert scale_x
if scale_y == 0:
y = None
else:
y = -(y / scale_y / 2.0) + 0.5
x = (x - xmin) / scale_x
return (x, y)
def _get_x_normal(self, inp):
"""Returns the x coordinate of the 'normal' value of the input"""
return self._point_real2widget((inp.normal, 0.0), inp)[0]
def _update_graypoint(self, inp):
curve_widget = self._builder.get_object("by%s_curve" % inp.name)
curve_widget.graypoint = (self._get_x_normal(inp), 0.5)
curve_widget.queue_draw()
@staticmethod
def _points_equal(points_a, points_b):
if len(points_a) != len(points_b):
return False
for a, b in zip(points_a, points_b):
for v1, v2 in zip(a, b):
if abs(v1 - v2) > 0.0001:
return False
return True
# Brush event handling:
def brush_selected_cb(self, bm, managed_brush, brushinfo):
"""Update GUI when a new brush is selected via the brush manager"""
self._update_brush_header(modified=False)
self._mark_all_settings_unmodified_in_treeview()
self._update_setting_ui(expanders=True)
self._update_metadata_ui()
def _update_brush_header(self, modified=False):
"""Updates the header strip with the current brush's icon and name"""
mb = None
if self.app:
mb = self.app.brushmanager.selected_brush
# Brush name label
if mb:
if mb.name:
name = mb.name.replace("_", " ")
else:
name = C_(
"brush settings editor: header: fallback name",
"(Unnamed brush)",
)
else:
name = "(Not running as part of MyPaint)"
if modified:
name = C_(
"brush settings editor: header: is-modified hint",
"{brush_name} [unsaved]",
).format(
brush_name = name,
)
label = self._builder.get_object("brush_name_label")
label.set_text(name)
# Brush icon
image = self._builder.get_object("brush_preview_image")
w = image.get_allocated_width()
h = image.get_allocated_height()
if mb:
pixbuf = mb.preview
else:
pixbuf = None
if pixbuf:
pixbuf = pixbuf.scale_simple(w, h, GdkPixbuf.InterpType.BILINEAR)
if not pixbuf:
pixbuf = GdkPixbuf.Pixbuf.new(GdkPixbuf.Colorspace.RGB,
True, 8, w, h)
image.set_from_pixbuf(pixbuf)
# GUI updating from the brush:
def _mark_setting_modified_in_treeview(self, setting_cname):
"""Updates the TreeView to show a single setting as modified"""
setting_path = self._setting_treepath.get(setting_cname)
group_id = self._setting_group.get(setting_cname)
group_path = self._group_treepath.get(group_id)
for row_path in setting_path, group_path:
if not row_path:
continue
row_iter = self._treestore.get_iter(row_path)
self._treestore.set_value(
row_iter,
self._LISTVIEW_FONT_WEIGHT_COLUMN,
Pango.Weight.BOLD,
)
def _mark_all_settings_unmodified_in_treeview(self):
"""Updates the TreeView to show no settings modified"""
paths = list(self._setting_treepath.values())
paths.extend(self._group_treepath.values())
for row_path in paths:
row_iter = self._treestore.get_iter(row_path)
self._treestore.set_value(
row_iter,
self._LISTVIEW_FONT_WEIGHT_COLUMN,
Pango.Weight.NORMAL,
)
def brush_modified_cb(self, settings, expanders=False):
"""Update gui when the brush has been modified"""
# Category and setting labels
for setting_cname in settings:
self._mark_setting_modified_in_treeview(setting_cname)
# Brush header
self._update_brush_header(modified=True)
# Current setting
if self._setting is None or self._setting.cname not in settings:
return
self._update_setting_ui(expanders=expanders)
# Live update
self._queue_live_update()
def _update_setting_ui(self, expanders=False):
"""Updates all the UI elements for the current setting"""
# Update base value adjuster and slider
if self._setting is None:
return
base_adj = self._base_adj[self._setting.cname]
# Update its value if running in test mode
# Normally the app will do this itself
if not self.app:
newvalue = self._brush.get_base_value(self._setting.cname)
base_adj.set_value(newvalue)
# Associate the base value scale with the right adjustment
scale = self._builder.get_object("base_value_scale")
if scale.get_adjustment() is not base_adj:
scale.set_adjustment(base_adj)
# Redraw the scale widget for the sake of the label (issue #524)
scale.queue_draw()
# Update brush dynamics curves and sliders
for inp in brushsettings.inputs:
self._update_input_curve(inp, expander=expanders)
self._update_graypoint(inp)
def _update_metadata_ui(self):
"""Updates the metadata UI elements (the "About" texts)"""
self._updating_metadata_ui = True
desc_text = self._brush.get_string_property("description") or ""
desc_entry = self._builder.get_object("description_entry")
desc_entry.set_text(desc_text)
notes_text = self._brush.get_string_property("notes") or ""
notes_buffer = self._builder.get_object("notes_textbuffer")
notes_buffer.set_text(notes_text)
self._updating_metadata_ui = False
def _update_input_curve(self, inp, expander=False):
"""Update curve scale adjustments to fit the curve into view"""
scale_y_adj = self._input_y_adj[inp.name]
xmax_adj = self._input_xmax_adj[inp.name]
xmin_adj = self._input_xmin_adj[inp.name]
curve_widget = self._builder.get_object("by%s_curve" % inp.name)
scale_y_widget = self._builder.get_object("by%s_scale" % inp.name)
assert scale_y_widget.get_adjustment() is scale_y_adj
brush_points = self._brush.get_points(self._setting.cname, inp.name)
brush_points_zero = [(inp.soft_min, 0.0), (inp.soft_max, 0.0)]
if not brush_points:
brush_points = brush_points_zero
# 1. update the scale
xmin, xmax = brush_points[0][0], brush_points[-1][0]
assert xmax > xmin
assert max([x for x, y in brush_points]) == xmax
assert min([x for x, y in brush_points]) == xmin
y_min = min([y for x, y in brush_points])
y_max = max([y for x, y in brush_points])
scale_y = max(abs(y_min), abs(y_max))
# choose between scale_y and -scale_y (arbitrary)
if brush_points[0][1] > brush_points[-1][1]:
scale_y = -scale_y
if not scale_y:
brush_points = brush_points_zero
# if xmin/xmax were non-default, reset them
xmin = inp.soft_min
xmax = inp.soft_max
self._disable_input_adj_changed_cb = True
# set adjustment limits imposed by brush setting
diff = self._setting.max - self._setting.min
scale_y_adj.set_upper(+diff)
scale_y_adj.set_lower(-diff)
scale_y_adj.set_value(scale_y)
# set adjustment values such that all points are visible
xmax_adj.set_value(xmax)
xmin_adj.set_value(xmin)
self._disable_input_adj_changed_cb = False
# Redraw the scale widget for the sake of the label (issue #524)
scale_y_widget.queue_draw()
# 2. calculate the default curve (the one we display if there is
# no curve)
curve_points_zero = [self._point_real2widget(p, inp)
for p in brush_points_zero]
# widget x coordinate of the "normal" input value
x_normal = self._get_x_normal(inp)
y0 = -1.0
y1 = +1.0
# the default _scroll_setting_editorline should go through zero
# at x_normal; change one of the border points to achieve this
if x_normal >= 0.0 and x_normal <= 1.0:
if x_normal < 0.5:
y0 = -0.5 / (x_normal - 1.0)
y1 = 0.0
else:
y0 = 1.0
y1 = -0.5 / x_normal + 1.0
(x0, junk0), (x1, junk1) = curve_points_zero
curve_points_zero = [(x0, y0), (x1, y1)]
# 3. display the curve
if scale_y:
curve_points = [self._point_real2widget(p, inp)
for p in brush_points]
else:
curve_points = curve_points_zero
assert len(curve_points) >= 2
curve_widget.points = curve_points
curve_widget.queue_draw()
self._update_graypoint(inp)
# 4. reset the expander
if not expander:
return
interesting = not self._points_equal(curve_points, curve_points_zero)
self._set_input_expanded(inp, interesting, scroll=False)
# Settings treeview management and change callbacks:
def _settings_treeview_selectfunc(self, seln, model, path, is_seld, data):
"""Determines whether settings listview rows can be selected"""
i = model.get_iter(path)
is_leaf = model.get_value(i, self._LISTVIEW_IS_SELECTABLE_COLUMN)
return is_leaf
def settings_treeview_row_activated_cb(self, view, path, column):
"""Double clicking opens expander rows"""
model = view.get_model()
i = model.get_iter(path)
is_leaf = model.get_value(i, self._LISTVIEW_IS_SELECTABLE_COLUMN)
if is_leaf or not view.get_visible():
return
if view.row_expanded(path):
view.collapse_row(path)
else:
view.expand_row(path, True)
def settings_treeview_cursor_changed_cb(self, view):
"""User has chosen a different setting using the treeview"""
sel = view.get_selection()
if sel is None:
return
model, i = sel.get_selected()
setting = self._setting
if i is None:
setting = None
else:
cname = model.get_value(i, self._LISTVIEW_CNAME_COLUMN)
setting = brushsettings.settings_dict.get(cname)
if setting is not self._setting:
self._setting = setting
self._current_setting_changed()
def _current_setting_changed(self):
"""Updates UI after a diffent brush setting is chosen"""
# Hide or show the relevant widgets in the main area
# FIXME: use a GtkStack or a GtkNotebook for this.
getobj = self._builder.get_object
metadata_grid = getobj("metadata_grid")
base_editor_grid = getobj("setting_base_editor_grid")
dynamics_editor_grid = getobj("setting_dynamics_editor_grid")
no_dynamics_grid = getobj("setting_no_dynamics_grid")
if self._setting is None:
metadata_grid.show_all()
base_editor_grid.hide()
dynamics_editor_grid.hide()
no_dynamics_grid.hide()
return
metadata_grid.hide()
base_editor_grid.show()
if self._setting.constant:
dynamics_editor_grid.hide()
no_dynamics_grid.show()
else:
dynamics_editor_grid.show()
no_dynamics_grid.hide()
# Update setting name label
label = getobj("setting_name_label")
label.set_label(self._setting.name)
# Update setting description
label.set_tooltip_text(self._setting.tooltip)
# Simulate the brush changing for just this setting to update
# the base value sliders and input curve stuff.
self.brush_modified_cb(self._setting.cname, expanders=True)
# Scroll the setting editor to the top
self._scroll_setting_editor(widget=None)
# Adjuster change callbacks: