Laborejo/qtgui/constantsAndConfigs.py

#! /usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Copyright 2019, Nils Hilbricht, Germany ( https://www.hilbricht.net )

This file is part of the Laborejo Software Suite ( https://www.laborejo.org ),
more specifically its template base application.

Laborejo2 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 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""

import logging; logging.info("import {}".format(__file__))

import engine.api as api
from PyQt5 import QtGui

class ConstantsAndConfigs(object):
    def __init__(self):
        self.ticksToPixelRatio = 128*3*5 #bigger value means less space between notes  #api.D128 and 128*3*5 is also good. This gets changed during runtime as "Stretch Factor". Also: the QSettings save and reload this on a per-file basis.
        #a quarter note has 53760 ticks. that is 53760 / 1920 = 28 pixels.
        self.stafflineGap = 7 #it is 7 because it is an odd number, which has a middle. 123 4 567 which translates 1:1 to pixels.
        self.beamHeight = 2
        self.magicPixel = 4
        self.negativeMagicPixel = -2
        self.trackHeight = self.stafflineGap * 10
        self.trackHeight = self.stafflineGap * 12
        self.gridRhythm = api.D4 #Default value is quarter. The QSettings save and reload this on a per-file basis.
        self.gridOpacity = 0.1 #this is only the default value. Once changed a QSetting will be used instead.
        self.noteHeadMode = True #False means rectangle noteheads
        self.followPlayhead = True #camera follows the playhead during playback.
        self.duringPlayback = False #set by a callback.
        self.velocityToPixelRatio = 2 #2.0 is the default. 128 pixels maximum.

        self.availableEditModes = ("notation", "cc", "block")

        self.ccViewValue = 0 #0-127. Only has effect if ccView is True
        self.ccViewCallbacks = [] #list of functions. For example the main Window CC spin box and the block Editor CC spin box.

        self._snapToGrid = True # For CC point and Tempo point placements
        self.snapToGridCallbacks = [] # see ccViewCallbacks

        self.zoomFactor = 1 # #Initial Zoom Level. Also hardcoded into scoreView.zoomNull
        self.maximumZoomOut = 0.25

  
        #fonts which are used in the QGraphicsScenes. They are special because they don't scale with the DPI.
        self.fontDB = QtGui.QFontDatabase()
        #fid = self.fontDB.addApplicationFont("gui/resources/freesans.ttf")
        #if fid == -1:
        #    raise ValueError("Freesans.ttf not loaded ")
        
        fid = self.fontDB.addApplicationFont(":euterpe.ttf")
        if fid == -1:
            raise ValueError("euterpe.ttf not loaded. Make sure resources were generated")

        #For easier programWide access move these to constantsAndConfigs
        #constantsAndConfigs.theFont = self.fontDB.font("FreeSans", "", 13)
        #constantsAndConfigs.theFont.setPixelSize(13) #It is very important to set the pixel size before setting the font to the text
        self.musicFont = self.fontDB.font("Euterpe", "", 13)
        self.musicFont.setPixelSize(13) #It is very important to set the pixel size before setting the font to the text

        self.dynamics = ["f", "ff", "p", "pp", "mf", "mp", "tacet"]

        self.prettyRhythms = [ #list because we need item order
            (api.DL, "0.25 Longa"),
            (api.DB, "0.5 Brevis"),
            (api.D1, "1 Whole"),
            (api.D2, "2 Half"),
            (api.D4, "4 Quarter"),
            (api.D8, "8 Eigth"),
            (api.D16, "16 Sixteenth"),
            (api.D32, "32 Thirthy-Second"),
            (api.D64, "64 Sixty-Fourth"),
            (api.D128, "128 Hundred Twenty-Eighth "),
            (api.D256, "256 Two-hundred Fifty-Sixth"),
            ]
        self.prettyRhythmsStrings = [v for k,v in self.prettyRhythms]
        self.prettyRhythmsValues = [k for k,v in self.prettyRhythms]

        self.prettyExtendedRhythms = [ #list because we need item order
            (api.DL, "0.25 Longa"),
            (api.DB, "0.5 Brevis"),
            (api.D1, "1 Whole"),
            (api.D2, "2 Half "),
            (api.D4, "4 Quarter"),
            (api.D8, "8 Eigth"),
            (api.D16, "16 Sixteenth"),
            (api.D32, "32 Thirthy-Second"),
            (api.D64, "64 Sixty-Fourth"),
            (api.D128, "128 Hundred Twenty-Eighth"),

            (1.5*api.DL, "Dotted 0.25 Longa"),
            (1.5*api.DB, "Dotted 0.5 Brevis"),
            (1.5*api.D1, "Dotted 1 Whole"),
            (1.5*api.D2, "Dotted 2 Half"),
            (1.5*api.D4, "Dotted 4 Quarter"),
            (1.5*api.D8, "Dotted 8 Eigth "),
            (1.5*api.D16, "Dotted 16 Sixteenth"),
            (1.5*api.D32, "Dotted 32 Thirthy-Second"),
            (1.5*api.D64, "Dotted 64 Sixty-Fourth "),
            (1.5*api.D128, "Dotted 128 Hundred Twenty-Eighth "),

            ]
        self.prettyExtendedRhythmsStrings = [v for k,v in self.prettyExtendedRhythms]
        self.prettyExtendedRhythmsValues = [k for k,v in self.prettyExtendedRhythms]

        #use with constantsAndConfigs.musicFont
        self.realNoteDisplay = {
            api.DB : "𝅜",
            api.D1 : "𝅝",
            api.D2 : "𝅗𝅥",
            api.D4 : "𝅘𝅥",
            api.D8 : "𝅘𝅥𝅮",
            api.D16 : "𝅘𝅥𝅯",
            api.D32 : "𝅘𝅥𝅰",
            api.D64 : "𝅘𝅥𝅱",
            api.D128 : "𝅘𝅥𝅲",

            1.5 * api.DB : "𝅜𝅭", #dotted DB
            1.5 * api.D1 : "𝅝𝅭", #dotted D1
            1.5 * api.D2 : "𝅗𝅥𝅭", #dotted D2
            1.5 * api.D4 : "𝅘𝅥𝅭", #dotted D4
            1.5 * api.D8 : "𝅘𝅥𝅮𝅭", #dotted D8
            1.5 * api.D16 : "𝅘𝅥𝅯𝅭", #dotted D16
            1.5 * api.D32 : "𝅘𝅥𝅰𝅭", #dotted D32
            1.5 * api.D64 : "𝅘𝅥𝅱𝅭", #dotted D64
            1.5 * api.D128 : "𝅘𝅥𝅲𝅭", #dotted D128

            2.25 * api.DB : "𝅜𝅭", #double dotted DB
            2.25 * api.D1 : "𝅝𝅭", #double dotted D1
            2.25 * api.D2 : "𝅗𝅥𝅭", #double dotted D2
            2.25 * api.D4 : "𝅘𝅥𝅭", #double dotted D4
            2.25 * api.D8 : "𝅘𝅥𝅮𝅭", #double dotted D8
            2.25 * api.D16 : "𝅘𝅥𝅯𝅭", #double dotted D16
            2.25 * api.D32 : "𝅘𝅥𝅰𝅭", #double dotted D32
            2.25 * api.D64 : "𝅘𝅥𝅱𝅭", #double dotted D64
            2.25 * api.D128 : "𝅘𝅥𝅲𝅭", #double dotted D128
        }


        self.commonNotes = [ #list because we need item order
            (api.D1, "𝅝"), #D1
            (api.D2 , "𝅗𝅥"), #D2
            (api.D4 , "𝅘𝅥"), #D4
            (api.D8 , "𝅘𝅥𝅮"), #D8

            (1.5 * api.D1 , "𝅝𝅭"), #dotted D1
            (1.5 * api.D2 , "𝅗𝅥𝅭"), #dotted D2
            (1.5 * api.D4 , "𝅘𝅥𝅭"), #dotted D4
            (1.5 * api.D8 , "𝅘𝅥𝅮𝅭"), #dotted D8
        ]

        self.realNotesStrings = [v for k,v in self.commonNotes]
        self.realNotesValues =  [k for k,v in self.commonNotes]

    @property
    def snapToGrid(self):
        return self._snapToGrid

    @snapToGrid.setter
    def snapToGrid(self, value):
        self._snapToGrid = value
        for func in self.snapToGridCallbacks:
            func()


constantsAndConfigs = ConstantsAndConfigs() #singleton