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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4 | daniel-mar | 1 | unit DXMidiEdit; |
| 2 | //(c)2007 Jaro Benes |
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| 3 | //All Rights Reserved |
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| 4 | |||
| 5 | { |
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| 6 | Complex application for users of unDelphiX as component editor: |
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| 7 | |||
| 8 | Supported: |
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| 9 | a) load existing midi file and store it into rersource. |
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| 10 | b) allow do play. |
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| 11 | |||
| 12 | } |
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| 13 | interface |
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| 14 | |||
| 15 | uses |
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| 16 | Windows, SysUtils, Classes, Forms, Dialogs, Controls, StdCtrls, ExtCtrls, |
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| 17 | Buttons, ComCtrls, Graphics, DXSounds; |
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| 18 | |||
| 19 | type |
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| 20 | |||
| 21 | { TDelphiXWaveEditForm } |
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| 22 | |||
| 23 | TDelphiXMidiEditForm = class(TForm) |
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| 24 | Bevel2: TBevel; |
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| 25 | OKButton: TButton; |
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| 26 | CancelButton: TButton; |
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| 27 | SaveDialog: TSaveDialog; |
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| 28 | OpenDialog: TOpenDialog; |
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| 29 | ClearButton: TButton; |
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| 30 | SaveButton: TButton; |
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| 31 | LoadButton: TButton; |
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| 32 | Panel1: TPanel; |
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| 33 | LengthLabel: TLabel; |
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| 34 | SizeLabel: TLabel; |
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| 35 | filenamelabel: TLabel; |
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| 36 | SizeValueLabel: TLabel; |
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| 37 | DXSound1: TDXSound; |
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| 38 | DXMusic1: TDXMusic; |
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| 39 | btnPlay: TBitBtn; |
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| 40 | btnStop: TBitBtn; |
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| 41 | procedure btnStopClick(Sender: TObject); |
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| 42 | procedure btnPlayClick(Sender: TObject); |
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| 43 | procedure OKButtonClick(Sender: TObject); |
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| 44 | procedure CancelButtonClick(Sender: TObject); |
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| 45 | procedure LoadButtonClick(Sender: TObject); |
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| 46 | procedure SaveButtonClick(Sender: TObject); |
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| 47 | procedure ClearButtonClick(Sender: TObject); |
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| 48 | procedure FormShow(Sender: TObject); |
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| 49 | procedure FormDestroy(Sender: TObject); |
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| 50 | procedure FormCreate(Sender: TObject); |
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| 51 | private |
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| 52 | FChanged: Boolean; |
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| 53 | FMidiFileName: string; |
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| 54 | FPlaying: Boolean; |
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| 55 | T: TMusicListCollectionItem; |
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| 56 | procedure UpDateData; |
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| 57 | procedure SetPlaying(const Value: Boolean); |
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| 58 | public |
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| 59 | MidiData: string; |
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| 60 | property MidiFileName: string read FMidiFileName write FMidiFileName; |
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| 61 | property Playing: Boolean read FPlaying write SetPlaying; |
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| 62 | end; |
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| 63 | |||
| 64 | var |
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| 65 | DelphiXMidiEditForm: TDelphiXMidiEditForm; |
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| 66 | |||
| 67 | implementation |
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| 68 | |||
| 69 | uses DXConsts; |
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| 70 | |||
| 71 | {$R *.DFM} |
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| 72 | |||
| 73 | procedure TDelphiXMidiEditForm.FormDestroy(Sender: TObject); |
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| 74 | begin |
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| 75 | if Playing then T.Stop; |
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| 76 | end; |
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| 77 | |||
| 78 | procedure TDelphiXMidiEditForm.FormShow(Sender: TObject); |
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| 79 | begin |
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| 80 | if Length(MidiData) <> 0 then begin |
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| 81 | T := DXMusic1.Midis.Add; |
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| 82 | T.Midi.MusicData := MidiData; |
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| 83 | // if FileExists(MidiFileName) then |
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| 84 | // T.LoadFromFile(MidiFileName); |
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| 85 | end; |
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| 86 | filenamelabel.Caption := MidiFileName; |
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| 87 | SizeValueLabel.Caption := Format('%d bytes', [Length(MidiData)]); |
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| 88 | UpDateData; |
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| 89 | end; |
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| 90 | |||
| 91 | procedure TDelphiXMidiEditForm.OKButtonClick(Sender: TObject); |
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| 92 | begin |
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| 93 | if FChanged then |
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| 94 | begin |
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| 95 | Tag := 1; |
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| 96 | end; |
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| 97 | Close; |
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| 98 | end; |
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| 99 | |||
| 100 | procedure TDelphiXMidiEditForm.CancelButtonClick(Sender: TObject); |
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| 101 | begin |
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| 102 | Close; |
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| 103 | end; |
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| 104 | |||
| 105 | procedure TDelphiXMidiEditForm.ClearButtonClick(Sender: TObject); |
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| 106 | begin |
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| 107 | if Playing then Playing := False; |
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| 108 | SetLength(MidiData, 0); |
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| 109 | MidiFileName := ''; |
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| 110 | filenamelabel.Caption := ''; |
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| 111 | SizeValueLabel.Caption := ''; |
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| 112 | DXMusic1.Midis.Clear; |
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| 113 | FChanged := True; |
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| 114 | UpdateData; |
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| 115 | end; |
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| 116 | |||
| 117 | procedure TDelphiXMidiEditForm.LoadButtonClick(Sender: TObject); |
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| 118 | begin |
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| 119 | if OpenDialog.Execute then |
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| 120 | begin |
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| 121 | if Playing then Playing := False; |
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| 122 | MidiFileName := OpenDialog.FileName; |
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| 123 | filenamelabel.Caption := ExtractFileName(MidiFileName); |
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| 124 | T := DXMusic1.Midis.Add; |
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| 125 | T.LoadFromFile(MidiFileName); |
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| 126 | MidiData := T.Midi.MusicData; |
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| 127 | SizeValueLabel.Caption := Format('%d bytes', [T.Size]); |
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| 128 | FChanged := True; |
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| 129 | UpdateData; |
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| 130 | end; |
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| 131 | end; |
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| 132 | |||
| 133 | procedure TDelphiXMidiEditForm.SaveButtonClick(Sender: TObject); |
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| 134 | var |
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| 135 | F: file; |
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| 136 | begin |
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| 137 | if SaveDialog.Execute then |
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| 138 | begin |
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| 139 | if Playing then Playing := False; |
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| 140 | if Length(MidiData) = 0 then Exit; |
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| 141 | if FChanged then |
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| 142 | begin |
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| 143 | if AnsiCompareFileName(MidiFileName, SaveDialog.FileName)=0 then Exit; |
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| 144 | end; |
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| 145 | AssignFile(F, SaveDialog.FileName); |
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| 146 | Rewrite(F,1); |
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| 147 | try |
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| 148 | BlockWrite(F, MidiData[1], Length(MidiData)); |
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| 149 | finally |
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| 150 | CloseFile(F); |
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| 151 | end; |
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| 152 | end; |
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| 153 | end; |
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| 154 | |||
| 155 | procedure TDelphiXMidiEditForm.UpDateData; |
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| 156 | begin |
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| 157 | if Length(mididata) > 0 then begin |
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| 158 | SaveButton.Enabled := True; |
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| 159 | ClearButton.Enabled := True; |
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| 160 | btnPlay.Enabled := True; |
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| 161 | end |
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| 162 | else begin |
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| 163 | SaveButton.Enabled := False; |
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| 164 | ClearButton.Enabled := False; |
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| 165 | btnPlay.Enabled := false; |
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| 166 | end |
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| 167 | end; |
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| 168 | |||
| 169 | procedure TDelphiXMidiEditForm.FormCreate(Sender: TObject); |
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| 170 | begin |
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| 171 | Tag := 0; |
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| 172 | FPlaying := False; |
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| 173 | end; |
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| 174 | |||
| 175 | procedure TDelphiXMidiEditForm.SetPlaying(const Value: Boolean); |
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| 176 | begin |
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| 177 | if not Value then T.Stop; |
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| 178 | FPlaying := Value; |
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| 179 | end; |
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| 180 | |||
| 181 | procedure TDelphiXMidiEditForm.btnPlayClick(Sender: TObject); |
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| 182 | begin |
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| 183 | FPlaying := True; |
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| 184 | T.Play; |
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| 185 | end; |
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| 186 | |||
| 187 | procedure TDelphiXMidiEditForm.btnStopClick(Sender: TObject); |
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| 188 | begin |
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| 189 | if Playing then Playing := False; |
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| 190 | end; |
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| 191 | |||
| 192 | end. |