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# This file is part of MyPaint.
# Copyright (C) 2009-2013 by Martin Renold <martinxyz@gmx.ch>
# Copyright (C) 2010-2018 by the MyPaint Development Team.
#
# 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.
from __future__ import division, print_function
from lib.gibindings import Gtk
from lib.gibindings import Gdk
import cairo
from . import windowing
"""Color history popup."""
## Module constants
popup_height = 60
bigcolor_width = popup_height
smallcolor_width = popup_height // 2
## Class definitions
class HistoryPopup (windowing.PopupWindow):
"""History popup window.
This window is normally bound to the "X" key, and has the following
behavior:
1. x, x, x, draw: cycles 3 colours back;
2. x, draw, x, draw, x, draw, ...: flips between two most recent
colours at the time this sequence started.
It's managed from a StateGroup: see gui.stategroup. See also
https://github.com/mypaint/mypaint/issues/93 for discussion.
"""
outside_popup_timeout = 0
def __init__(self, app, model):
super(HistoryPopup, self).__init__(app)
# TODO: put the mouse position onto the selected color
# FIXME: This duplicates stuff from the PopupWindow
self.set_position(Gtk.WindowPosition.MOUSE)
self.app = app
self.app.kbm.add_window(self)
hist_len = len(self.app.brush_color_manager.get_history())
self.popup_width = bigcolor_width + (hist_len-1)*smallcolor_width
self.set_events(Gdk.EventMask.BUTTON_PRESS_MASK |
Gdk.EventMask.BUTTON_RELEASE_MASK |
Gdk.EventMask.ENTER_NOTIFY_MASK |
Gdk.EventMask.LEAVE_NOTIFY_MASK
)
self.connect("button-release-event", self.button_release_cb)
self.connect("button-press-event", self.button_press_cb)
self.connect("draw", self.draw_cb)
self.set_size_request(self.popup_width, popup_height)
# Selection index. Each enter() (i.e. keypress) advances this.
self.selection = None
# Reset the selection when something is drawn,
# or when the colour history changes.
mgr = self.app.brush_color_manager
mgr.color_history_updated += self._reset_selection_cb
model.canvas_area_modified += self._reset_selection_cb
def enter(self):
mgr = self.app.brush_color_manager
hist = mgr.get_history()
if self.selection is None:
self.selection = len(hist) - 1
color = mgr.get_color()
if hist[self.selection] == color:
self.selection -= 1
else:
self.selection = (self.selection - 1) % len(hist)
mgr.set_color(hist[self.selection])
# popup placement
x, y = self.get_position()
bigcolor_center_x = (self.selection * smallcolor_width +
bigcolor_width // 2)
self.move(x + self.popup_width // 2 - bigcolor_center_x,
y + bigcolor_width)
self.show_all()
window = self.get_window()
cursor = Gdk.Cursor.new_for_display(
window.get_display(), Gdk.CursorType.CROSSHAIR)
window.set_cursor(cursor)
def leave(self, reason):
self.hide()
def button_press_cb(self, widget, event):
pass
def button_release_cb(self, widget, event):
pass
def _reset_selection_cb(self, *_args, **_kwargs):
self.selection = None
def draw_cb(self, widget, cr):
cr.set_source_rgb(0.9, 0.9, 0.9)
cr.paint()
cr.set_line_join(cairo.LINE_JOIN_ROUND)
cr.translate(0.0, popup_height/2.0)
hist = self.app.brush_color_manager.get_history()
for i, c in enumerate(hist):
if i != self.selection:
cr.scale(0.5, 0.5)
line_width = 3.0
distance = 2*line_width
rect = [0, -popup_height/2.0, popup_height, popup_height]
rect[0] += distance/2.0
rect[1] += distance/2.0
rect[2] -= distance
rect[3] -= distance
cr.rectangle(*rect)
cr.set_source_rgb(*c.get_rgb())
cr.fill_preserve()
cr.set_line_width(line_width)
cr.set_source_rgb(0, 0, 0)
cr.stroke()
cr.translate(popup_height, 0)
if i != self.selection:
cr.scale(2.0, 2.0)
return True
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