470 lines
16 KiB
C++
470 lines
16 KiB
C++
//=============================================================================
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// MusE Score
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// Linux Music Score Editor
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//
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// Copyright (C) 2009 Werner Schweer and others
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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 version 2.
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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, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//=============================================================================
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#include "piano.h"
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namespace Ms {
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QPixmap* Piano::octave;
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QPixmap* Piano::mk1;
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QPixmap* Piano::mk2;
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QPixmap* Piano::mk3;
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QPixmap* Piano::mk4;
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//---------------------------------------------------------
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// Piano
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//---------------------------------------------------------
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Piano::Piano(QWidget* parent)
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: QWidget(parent)
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{
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setMouseTracking(true);
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_ymag = 1.0;
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setAttribute(Qt::WA_NoSystemBackground);
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setAttribute(Qt::WA_StaticContents);
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setMouseTracking(true);
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/*
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0 1 2 3 4 5 6 7 8 9 10
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c-2 c-1 C0 C1 C2 C3 C4 C5 C6 C7 C8 - G8
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Grid ve:
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+------------+ ------------------------------
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11 | |
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| b | 7
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+------+ |
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10 | a# +-----+ ..............................
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+------+ a |
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9 | | 6
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+------+ |
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8 | g# +-----+ ..............................
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+------+ g |
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7 | | 5
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+------+ |
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6 | f# +-----+ ..............................
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+------+ f |
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5 | | 4
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| |
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+------------+ ------------------------------
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4 | |
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| e | 3
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+------+ |
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3 | d# +-----+ ..............................
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+------+ d |
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2 | | 2
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+------+ |
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1 | c# +-----+ ..............................
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+------+ c |
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| | 1
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0 | |
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+------------+ ------------------------------
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*/
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static const char* oct_xpm[] = {
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// w h colors
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"40 91 2 1",
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". c #f0f0f0",
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"# c #000000",
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// x
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"####################################### ",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#", // 10
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#", //------------------------
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"#######################................#",
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"########################...............#",
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"########################...............#",
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"####################################### ", // 7
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"########################...............#",
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"########################...............#",
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"#######################................#", //------------------------
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".......................................#",
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".......................................#",
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".......................................#", // 6
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".......................................#",
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".......................................#",
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".......................................#", //------------------------
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"#######################................#",
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"########################...............#",
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"########################...............#", // 7
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"####################################### ",
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"########################...............#",
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"########################...............#",
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"#######################................#", //------------------------
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".......................................#",
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".......................................#",
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".......................................#", // 6
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".......................................#",
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".......................................#",
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".......................................#", //------------------------
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"#######################................#",
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"########################...............#",
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"########################...............#", // 7
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"####################################### ",
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"########################...............#",
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"########################...............#",
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"#######################................#", //------------------------
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#", // 10
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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"####################################### ", //----------------------
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#", // 9
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#", //------------------------
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"#######################................#",
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"########################...............#",
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"########################...............#",
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"####################################### ", // 7
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"########################...............#",
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"########################...............#",
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"#######################................#", //------------------------
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".......................................#",
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".......................................#",
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".......................................#", // 6
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".......................................#",
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".......................................#",
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".......................................#", //--------------------------
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"#######################................#",
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"########################...............#",
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"########################...............#", // 7
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"####################################### ",
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"########################...............#",
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"########################...............#",
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"#######################................#", //------------------------
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#", // 10
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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};
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static const char* mk1_xpm[] = {
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"40 13 2 1",
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". c #ff0000",
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"# c none",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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"#######################................#",
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"########################...............#",
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"########################...............#",
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"####################################### ",
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};
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static const char* mk2_xpm[] = {
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"40 13 2 1",
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". c #ff0000",
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"# c none",
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"########################...............#",
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"########################...............#",
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"#######################................#", //------------------------
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".......................................#",
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".......................................#",
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".......................................#", // 6
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".......................................#",
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".......................................#",
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".......................................#", //--------------------------
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"#######################................#",
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"########################...............#",
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"########################...............#", // 7
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"####################################### ",
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};
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static const char* mk3_xpm[] = {
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"40 13 2 1",
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". c #ff0000",
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"# c none",
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"########################...............#",
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"########################...............#",
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"#######################................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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".......................................#",
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"########################################",
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};
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static const char* mk4_xpm[] = {
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"40 13 2 1",
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"# c #ff0000",
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". c none",
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"........................................",
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"........................................",
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"........................................",
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"#######################.................",
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"########################................",
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"########################................",
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"########################................",
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"########################................",
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"########################................",
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"#######################.................",
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"........................................",
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"........................................",
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"........................................",
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};
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if (octave == 0) {
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octave = new QPixmap(oct_xpm);
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mk1 = new QPixmap(mk1_xpm);
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mk2 = new QPixmap(mk2_xpm);
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mk3 = new QPixmap(mk3_xpm);
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mk4 = new QPixmap(mk4_xpm);
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}
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yRange = keyHeight * 75;
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curPitch = -1;
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_ypos = 0;
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curKeyPressed = -1;
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_orientation = PianoOrientation::VERTICAL;
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}
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//---------------------------------------------------------
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// pitch2y
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// y = 0 == origin of rCanvasA
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//---------------------------------------------------------
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int Piano::pitch2y(int pitch) const
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{
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static int tt[] = {
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12, 19, 25, 32, 38, 51, 58, 64, 71, 77, 84, 90
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};
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int y = (75 * keyHeight) - (tt[pitch % 12] + (7 * keyHeight) * (pitch / 12));
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if (y < 0) {
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y = 0;
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}
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return lrint(y - _ypos / _ymag);
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}
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//---------------------------------------------------------
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// y2pitch
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// y = 0 == origin of rCanvasA
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//---------------------------------------------------------
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int Piano::y2pitch(int y) const
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{
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y = lrint((y + _ypos) / _ymag);
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static const int total = (10 * 7 + 5) * keyHeight; // 75 steps
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y = total - y;
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int oct = (y / (7 * keyHeight)) * 12;
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static const char kt[] = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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1, 1, 1, 1, 1, 1, 1,
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2, 2, 2, 2, 2, 2,
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3, 3, 3, 3, 3, 3, 3,
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4, 4, 4, 4, 4, 4, 4, 4, 4,
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
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6, 6, 6, 6, 6, 6, 6,
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7, 7, 7, 7, 7, 7,
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8, 8, 8, 8, 8, 8, 8,
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9, 9, 9, 9, 9, 9,
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10, 10, 10, 10, 10, 10, 10,
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11, 11, 11, 11, 11, 11, 11, 11, 11, 11
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};
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int pitch = kt[y % 91] + oct;
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if (pitch < 0 || pitch > 127) {
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pitch = -1;
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}
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return pitch;
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}
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//---------------------------------------------------------
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// paint
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//---------------------------------------------------------
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void Piano::paintEvent(QPaintEvent* event)
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{
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QPainter p(this);
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const QRect& rr = event->rect();
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QRect r;
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if (_orientation == PianoOrientation::HORIZONTAL) {
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int w = keyHeight * 52;
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p.translate(w, 0);
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p.rotate(90.0);
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r.setWidth(rr.height());
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r.setHeight(rr.width());
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r.setX(0);
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r.setY(0);
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} else {
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r = rr;
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}
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p.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform | QPainter::TextAntialiasing);
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int d = int(_ymag) + 1;
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qreal x = qreal(r.x());
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qreal y = 0.0;
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qreal h = (r.height() + d) / _ymag;
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QPointF offset(x, _ypos / _ymag + keyHeight * 2 + y);
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p.scale(1.0, _ymag);
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p.drawTiledPixmap(QRectF(x, y, qreal(r.width()), h), *octave, offset);
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if (curPitch != -1) {
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int py = pitch2y(curPitch);
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QPixmap* pm;
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switch (curPitch % 12) {
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case 0:
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case 5:
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pm = mk3;
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break;
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case 2:
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case 7:
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case 9:
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pm = mk2;
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break;
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case 4:
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case 11:
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pm = mk1;
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break;
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default:
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pm = mk4;
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break;
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}
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p.drawPixmap(0, py, *pm);
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}
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}
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//---------------------------------------------------------
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// setYpos
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//---------------------------------------------------------
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void Piano::setYpos(int val)
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{
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if (_ypos != val) {
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_ypos = val;
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update();
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}
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}
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//---------------------------------------------------------
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// setMag
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//---------------------------------------------------------
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void Piano::setMag(double, double ym)
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{
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if (_ymag != ym) {
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_ymag = ym;
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update();
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}
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}
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//---------------------------------------------------------
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// setPitch
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//---------------------------------------------------------
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void Piano::setPitch(int val)
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{
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if (curPitch != val) {
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curPitch = val;
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update();
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}
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}
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//---------------------------------------------------------
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// mousePressEvent
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//---------------------------------------------------------
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void Piano::mousePressEvent(QMouseEvent* event)
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{
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curKeyPressed = y2pitch(event->pos().y());
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emit keyPressed(curKeyPressed);
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}
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//---------------------------------------------------------
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// mouseReleaseEvent
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//---------------------------------------------------------
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void Piano::mouseReleaseEvent(QMouseEvent*)
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{
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emit keyReleased(curKeyPressed);
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curKeyPressed = -1;
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}
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//---------------------------------------------------------
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// mouseMoveEvent
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//---------------------------------------------------------
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void Piano::mouseMoveEvent(QMouseEvent* event)
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{
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int pitch = y2pitch(event->pos().y());
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if (pitch != curPitch) {
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curPitch = pitch;
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emit pitchChanged(curPitch);
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if ((curKeyPressed != -1) && (curKeyPressed != pitch)) {
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emit keyReleased(curKeyPressed);
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curKeyPressed = pitch;
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emit keyPressed(curKeyPressed);
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}
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update();
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}
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}
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//---------------------------------------------------------
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// leaveEvent
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//---------------------------------------------------------
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void Piano::leaveEvent(QEvent*)
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{
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if (curPitch != -1) {
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curPitch = -1;
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emit pitchChanged(-1);
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update();
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}
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}
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//---------------------------------------------------------
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// setOrientation
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//---------------------------------------------------------
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void Piano::setOrientation(PianoOrientation o)
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{
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_orientation = o;
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update();
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}
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}
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