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|
unit TrackerGrid;
{$mode delphi}
interface
uses
Classes, SysUtils, Controls, Graphics, Constants, LCLType, math, LCLIntf,
LMessages, HugeDatatypes, ClipboardUtils, gdeque, gstack, utils, effecteditor,
Keymap, LazLoggerBase, hUGESettings;
const
UNDO_STACK_SIZE = 100;
type
TPatternGrid = array of PPattern;
{ TSavedPattern }
TSavedPattern = record
PatternNumber: Integer;
Pattern: TPattern;
end;
TSavedPatternSet = array of TSavedPattern;
TUndoRedoAction = record
Before, After: TSavedPatternSet;
end;
TUndoDeque = TDeque<TUndoRedoAction>;
TRedoStack = TStack<TUndoRedoAction>;
{ TSelectionEnumerator }
TSelectionEnumerator = record
private
function GetCurrent: TSelectionRow;
public
Grid: TPatternGrid;
Row: Integer;
Cursor, Other: TSelectionPos;
constructor Create(Grid: TPatternGrid; Cursor, Other: TSelectionPos);
function MoveNext: Boolean;
property Current: TSelectionRow read GetCurrent;
function GetEnumerator: TSelectionEnumerator;
end;
{ TTrackerGrid }
TTrackerGrid = class(TCustomControl)
procedure Paint; override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure DblClick; override;
procedure KeyDown(var Key: Word; Shift: TShiftState); override;
procedure KeyUp(var Key: Word; Shift: TShiftState); override;
private
function GetSelection: TSelection;
procedure PerformPaste(Paste: TSelection; Mix: Boolean = False); overload;
procedure PerformPaste(Paste: TSelection; Where: TSelectionPos; Mix: Boolean = False); overload;
procedure PerformCopy;
procedure DoPaste(var Msg: TLMessage); message LM_PASTE;
procedure DoCopy(var Msg: TLMessage); message LM_COPY;
procedure DoCut(var Msg: TLMessage); message LM_CUT;
procedure BeginUndoAction;
procedure EndUndoAction;
procedure RevertUndoAction;
procedure RenderSelectedArea;
procedure ClampCursors;
procedure EnsureCursorVisible;
procedure NormalizeCursors;
procedure InputNote(Key: Word);
procedure InputInstrument(Key: Word);
procedure InputVolume(Key: Word); virtual;
procedure InputEffectCode(Key: Word);
procedure InputEffectParams(Key: Word);
procedure RenderRow(Row: Integer);
procedure RenderCell(const Cell: TCell); virtual;
procedure SetHighlightedRow(Row: Integer);
procedure SetSelectionGridRect(R: TRect);
function GetSelectionGridRect: TRect;
function GetEffectColor(EffectCode: Integer): TColor;
function SelectionsToRect(S1, S2: TSelectionPos): TRect;
function SelectionToRect(Selection: TSelectionPos): TRect;
function MousePosToSelection(X, Y: Integer): TSelectionPos;
function KeycodeToHexNumber(Key: Word; var Num: Nibble): Boolean; overload;
function KeycodeToHexNumber(Key: Word; var Num: Integer): Boolean; overload;
procedure ChangeFontSize;
private
PatternMap: TPatternMap;
Patterns: TPatternGrid;
PatternNumbers: array of Integer;
CharHeight: Integer;
CharWidth: Integer;
MouseButtonDown: Boolean;
Selecting: Boolean;
DraggingSelection: Boolean;
MouseMoveHappened: Boolean;
ShiftClicking: Boolean;
DragSelCursor, DragSelOther, ShiftClickOrigin: TSelectionPos;
DragOffsetY: Integer;
NestedUndoCount: Integer;
CurrentUndoAction: TUndoRedoAction;
Performed: TUndoDeque;
Recall: TRedoStack;
LastFxParam: array [0..15] of Byte;
FHighlightedRow: Integer;
FFontSize: Integer;
procedure SetFontSize(AValue: Integer);
public
Cursor, Other: TSelectionPos;
ColumnWidth, RowHeight: Integer;
NumColumns, NumRows: Integer;
SelectedInstrument, SelectedOctave, Step: Integer;
OnCursorOutOfBounds: procedure of object;
OnDoubleClickedInstrument: procedure of object;
property HighlightedRow: Integer read FHighlightedRow write SetHighlightedRow;
property SelectionGridRect: TRect read GetSelectionGridRect write SetSelectionGridRect;
property FontSize: Integer read FFontSize write SetFontSize;
procedure LoadPattern(Idx: Integer; PatternNumber: Integer);
function GetAt(SelectionPos: TSelectionPos): Integer;
procedure SetAt(SelectionPos: TSelectionPos; Value: Integer);
procedure IncrementAt(SelectionPos: TSelectionPos; Value: Integer); virtual;
procedure ClearAt(SelectionPos: TSelectionPos);
procedure InsertRowInPatternAtCursor(Pattern: Integer);
procedure InsertRowInAllAtCursor;
procedure DeleteRowInPatternAtCursor(Pattern: Integer);
procedure DeleteRowInAllAtCursor;
procedure InputNoteValue(Note: Integer);
procedure SelectAll;
procedure SelectColumn;
procedure EraseSelection;
procedure DoUndo;
procedure DoRedo;
procedure DoRepeatPaste;
procedure DoMixPaste;
procedure TransposeSelection(Semitones: Integer);
procedure IncrementSelection(Note, Instrument, Volume, EffectCode, EffectParam: Integer);
procedure InterpolateSelection;
procedure ChangeSelectionInstrument;
procedure OpenEffectEditor;
constructor Create(
AOwner: TComponent;
Parent: TWinControl;
PatternMap: TPatternMap;
NumColumns: Integer;
NumRows: Integer = 64); reintroduce;
destructor Destroy; override;
end;
{ TTableGrid }
TTableGrid = class(TTrackerGrid)
procedure RenderCell(const Cell: TCell); override;
procedure InputVolume(Key: Word); override;
procedure IncrementAt(SelectionPos: TSelectionPos; Value: Integer); override;
end;
var
clNote: TColor = TColor($7F4A00);
clInstrument: TColor = TColor($7F7F00);
clFxMisc: TColor = TColor($3F3F7C);
clFxPitch: TColor = TColor($006262);
clFxVolume: TColor = TColor($007F26);
clFxPan: TColor = TColor($7F7F00);
clFxSong: TColor = TColor($00007F);
clTblJump: TColor = TColor($72004E);
clBackground: TColor = TColor($D0DBE1);
clHighlighted: TColor = TColor($7A99A9);
clSelected: TColor = TColor($9EB4C0);
clLineFour: TColor = TColor($C3D1D8);
clLineSixteen: TColor = TColor($B5C5CE);
clDots: TColor = clGray;
clDividers: TColor = TColor($ABB7BC);
implementation
uses Forms;
{ TTableGrid }
procedure TTableGrid.RenderCell(const Cell: TCell);
begin
with Canvas do begin
Font.Color := clNote;
if (Cell.Note = NO_NOTE) then begin
Font.Color := clDots;
TextOut(PenPos.X, PenPos.Y, '...')
end
else if Cell.Note >= MIDDLE_NOTE then
TextOut(PenPos.X, PenPos.Y, '+'+FormatFloat('00', Cell.Note - MIDDLE_NOTE))
else if Cell.Note < MIDDLE_NOTE then
TextOut(PenPos.X, PenPos.Y, '-'+FormatFloat('00', MIDDLE_NOTE - Cell.Note));
TextOut(PenPos.X, PenPos.Y, ' ');
// Instrument column empty
Font.Color := clDots;
TextOut(PenPos.X, PenPos.Y, '..');
if Cell.Volume <> 0 then begin
Font.Color := clTblJump;
if TrackerSettings.DisplayRowNumbersAsHex then
TextOut(PenPos.X, PenPos.Y, 'J'+IntToHex(Cell.Volume, 2))
else
TextOut(PenPos.X, PenPos.Y, 'J'+FormatFloat('00', Cell.Volume));
end
else begin
Font.Color := clDots;
TextOut(PenPos.X, PenPos.Y, '...');
end;
if (Cell.EffectCode <> 0) or (Cell.EffectParams.Value <> 0) then begin
Font.Color := GetEffectColor(Cell.EffectCode);
TextOut(
PenPos.X,
PenPos.Y,
IntToHex(Cell.EffectCode, 1)
+ IntToHex(Cell.EffectParams.Param1, 1)
+ IntToHex(Cell.EffectParams.Param2, 1)
);
end
else begin
Font.Color := clDots;
TextOut(PenPos.X, PenPos.Y, '...');
end;
TextOut(PenPos.X, PenPos.Y, ' ');
end;
end;
procedure TTableGrid.InputVolume(Key: Word);
var
Temp: Nibble;
begin
BeginUndoAction;
with Patterns[Cursor.X]^[Cursor.Y] do begin
if Key = VK_DELETE then Volume := 0
else if KeycodeToHexNumber(Key, Temp) then begin
if TrackerSettings.DisplayRowNumbersAsHex then begin
Volume := ((Volume mod 16) * 16) + Temp;
if Volume > 99 then Volume := Temp;
end
else if InRange(Temp, 0, 9) then
Volume := ((Volume mod 10) * 10) + Temp;
end;
end;
Invalidate;
EndUndoAction;
end;
procedure TTableGrid.IncrementAt(SelectionPos: TSelectionPos; Value: Integer);
begin
with Patterns[SelectionPos.X]^[SelectionPos.Y] do
if (Note = NO_NOTE) and (SelectionPos.SelectedPart = cpNote) then
Note := MIDDLE_NOTE;
inherited;
end;
{ TSelectionEnumerator }
constructor TSelectionEnumerator.Create(Grid: TPatternGrid; Cursor,
Other: TSelectionPos);
begin
Self.Grid := Grid;
Self.Row := Cursor.Y-1;
Self.Cursor := Cursor;
Self.Other := Other;
end;
function TSelectionEnumerator.GetCurrent: TSelectionRow;
var
X, I: Integer;
begin
// Very ugly function
SetLength(Result, (Other.X-Cursor.X)+1);
Result[0].Cell := Grid[Cursor.X]^[Row];
if Cursor.X <> Other.X then
Result[0].Parts := [Cursor.SelectedPart..High(TCellPart)]
else
Result[0].Parts := [Cursor.SelectedPart..Other.SelectedPart];
I := 1;
for X := Cursor.X+1 to Other.X - 1 do begin
Result[I].Cell := Grid[X]^[Row];
Result[I].Parts := [Low(TCellPart)..High(TCellPart)];
Inc(I);
end;
if Cursor.X <> Other.X then begin
Result[High(Result)].Cell := Grid[Other.X]^[Row];
Result[High(Result)].Parts := [Low(TCellPart)..Other.SelectedPart];
end;
end;
function TSelectionEnumerator.MoveNext: Boolean;
begin
Result := True;
Inc(Row);
if Row > Other.Y then Result := False;
end;
function TSelectionEnumerator.GetEnumerator: TSelectionEnumerator;
begin
Result := Self;
end;
{ TTrackerGrid }
constructor TTrackerGrid.Create(
AOwner: TComponent;
Parent: TWinControl;
PatternMap: TPatternMap;
NumColumns: Integer;
NumRows: Integer);
var
I: Integer;
begin
inherited Create(AOwner);
// The LCL only populates the screen's font list once. Since we're
// dynamically adding fonts at startup, we need to refresh this list.
Screen.Fonts.Clear;
FFontSize := 12;
Self.PatternMap := PatternMap;
Self.NumColumns := NumColumns;
Self.NumRows := NumRows;
SetLength(Patterns, NumColumns);
SetLength(PatternNumbers, NumColumns);
NestedUndoCount := 0;
Performed := TUndoDeque.Create;
Recall := TRedoStack.Create;
for I := Low(LastFxParam) to High(LastFxParam) do
LastFxParam[I] := Byte(0);
DoubleBuffered := True;
ControlStyle := ControlStyle + [csCaptureMouse, csClickEvents, csDoubleClicks];
Self.Parent := Parent;
ChangeFontSize;
SelectedInstrument := 0;
SelectedOctave := 0;
Step := 0;
end;
destructor TTrackerGrid.Destroy;
var
Q: TUndoRedoAction;
begin
// There's an FPC version which includes a bugged destructor for TDeque, in
// which it will segfault when freeing an empty TDeque. To avoid this, we put
// an element in it first. TODO: Remove this ridiculous hack once the fix gets
// released to the stable channel.
Q.After := nil;
Q.Before := nil;
Performed.PushFront(Q);
Performed.Free;
Recall.Free;
inherited;
end;
procedure TTrackerGrid.Paint;
var
I: Integer;
R: TRect;
begin
inherited Paint;
with Canvas do begin
Brush.Color := clBackground;
Clear;
for I := 0 to NumRows-1 do begin
if (I mod 4) = 0 then
Brush.Color := clLineFour;
if (I mod 16) = 0 then
Brush.Color := clLineSixteen;
if I = Cursor.Y then
Brush.Color := clSelected;
if I = FHighlightedRow then
Brush.Color := clHighlighted;
FillRect(0, I*RowHeight, Width, (I+1)*RowHeight);
MoveTo(0, I*RowHeight);
RenderRow(I);
end;
end;
// Draw borders between columns
Canvas.Pen.Color := clDividers;
Canvas.Pen.Width := 2;
for I := 0 to NumColumns do
Canvas.Line((ColumnWidth*I) - 1, 0, (ColumnWidth*I) - 1, Height);
if DraggingSelection then
Canvas.DrawFocusRect(SelectionsToRect(DragSelCursor, DragSelOther));
RenderSelectedArea;
end;
procedure TTrackerGrid.MouseDown(Button: TMouseButton; Shift: TShiftState; X,
Y: Integer);
var
Clicked: TSelectionPos;
begin
inherited MouseDown(Button, Shift, X, Y);
if (Button = mbRight) and (Cursor <> Other) then Exit;
if (Button = mbLeft) and not (ssShift in Shift) then
MouseButtonDown := True;
if CanFocus then SetFocus;
Clicked := MousePosToSelection(X, Y);
if ssShift in Shift then begin
if not ShiftClicking then begin
ShiftClickOrigin := Cursor;
ShiftClicking := True;
end;
Cursor := ShiftClickOrigin;
Other := Clicked
end
else begin
if not SelectionsToRect(Cursor, Other).IntersectsWith(SelectionToRect(Clicked)) then begin
Cursor := Clicked;
Other := Cursor;
Selecting := False;
end
end;
MouseMoveHappened := False;
NormalizeCursors;
Invalidate;
end;
procedure TTrackerGrid.MouseMove(Shift: TShiftState; X, Y: Integer);
var
Click, Drag: TSelectionPos;
SelectionRect: TRect;
begin
inherited MouseMove(Shift, X, Y);
Click := MousePosToSelection(X, Y);
if MouseButtonDown
and ((Cursor <> Other) or (Cursor.Y <> Other.Y)) // <> is overridden
and (not Selecting)
and (not MouseMoveHappened)
and SelectionsToRect(Cursor, Other).IntersectsWith(SelectionToRect(Click)) then begin
DraggingSelection := True;
SelectionRect := SelectionsToRect(Cursor, Other);
DragOffsetY := Y - SelectionRect.Top;
end;
if MouseButtonDown then begin
if DraggingSelection then begin
Drag := MousePosToSelection(X, Y - DragOffsetY);
DragSelCursor := Cursor;
DragSelOther := Other;
DragSelCursor.X := Drag.X;
DragSelCursor.Y := Drag.Y;
DragSelOther.X := DragSelCursor.X + (Other.X - Cursor.X);
DragSelOther.Y := DragSelCursor.Y + (Other.Y - Cursor.Y);
Invalidate;
end
else begin
Selecting := True;
Other := Click;
ClampCursors;
Invalidate;
end;
end;
MouseMoveHappened := True;
end;
procedure TTrackerGrid.MouseUp(Button: TMouseButton; Shift: TShiftState; X,
Y: Integer);
var
Selection: TSelection;
begin
inherited MouseUp(Button, Shift, X, Y);
if (not Selecting) and (not MouseMoveHappened) and (not (ssShift in Shift)) then begin
Cursor := MousePosToSelection(X, Y);
Other := Cursor;
end;
Selecting := False;
MouseMoveHappened := False;
MouseButtonDown := False;
if DraggingSelection then begin
BeginUndoAction;
Selection := GetSelection;
EraseSelection;
PerformPaste(Selection, DragSelCursor);
Cursor := DragSelCursor;
Other := DragSelOther;
DraggingSelection := False;
EndUndoAction;
end;
NormalizeCursors;
Invalidate;
end;
procedure TTrackerGrid.DblClick;
begin
if (Cursor.SelectedPart = cpInstrument) and Assigned(OnDoubleClickedInstrument) then
OnDoubleClickedInstrument
else
OpenEffectEditor;
NormalizeCursors;
MouseButtonDown := False;
Invalidate;
end;
procedure TTrackerGrid.KeyDown(var Key: Word; Shift: TShiftState);
begin
inherited KeyDown(Key, Shift);
if Key in [VK_CONTROL, VK_SHIFT, VK_DELETE] then Exit;
case Key of
VK_UP: Dec(Cursor.Y);
VK_DOWN: Inc(Cursor.Y);
VK_PRIOR: Dec(Cursor.Y, 16);
VK_NEXT: Inc(Cursor.Y, 16);
VK_LEFT: DecSelectionPos(Cursor);
VK_RIGHT: IncSelectionPos(Cursor);
VK_HOME: Cursor.Y := 0;
VK_END: Cursor.Y := NumRows-1;
VK_TAB: begin
if ssShift in Shift then begin
Dec(Cursor.X);
Exclude(Shift, ssShift)
end
else
Inc(Cursor.X);
if Cursor.X > (NumColumns-1) then
Cursor.X := 0;
if Cursor.X < 0 then
Cursor.X := (NumColumns-1);
Key := 0;
end
else
if (not (ssCtrl in Shift)) and (not (ssShift in Shift)) then
case Cursor.SelectedPart of
cpNote: InputNote(Key);
cpInstrument: InputInstrument(Key);
cpVolume: InputVolume(Key);
cpEffectCode: InputEffectCode(Key);
cpEffectParams: InputEffectParams(Key);
end;
end;
if (Cursor.Y > NumRows-1) or (Cursor.Y < 0) then
if Assigned(OnCursorOutOfBounds) then OnCursorOutOfBounds;
if Shift = [] then
Other := Cursor;
ClampCursors;
EnsureCursorVisible;
Invalidate;
end;
procedure TTrackerGrid.KeyUp(var Key: Word; Shift: TShiftState);
begin
inherited KeyUp(Key, Shift);
if key = VK_SHIFT then
ShiftClicking := False;
end;
function TTrackerGrid.GetSelection: TSelection;
var
R: Integer;
Rect: TRect;
SelRow: TSelectionRow;
begin
NormalizeCursors;
Rect := SelectionGridRect;
SetLength(Result, Rect.Height+1);
R := 0;
for SelRow in TSelectionEnumerator.Create(Patterns, Cursor, Other) do begin
Result[R] := SelRow;
Inc(R)
end;
end;
procedure TTrackerGrid.PerformPaste(Paste: TSelection; Where: TSelectionPos; Mix: Boolean = False);
procedure OverlayCell(var Cell1: TCell; const Cell2: TSelectedCell);
begin
if cpNote in Cell2.Parts then
if (not Mix) or (Cell2.Cell.Note <> NO_NOTE) then
Cell1.Note := Cell2.Cell.Note;
if cpInstrument in Cell2.Parts then
if (not Mix) or (Cell2.Cell.Instrument <> 0) then
Cell1.Instrument := Cell2.Cell.Instrument;
if cpVolume in Cell2.Parts then
if (not Mix) or (Cell2.Cell.Volume <> 0) then
Cell1.Volume := Cell2.Cell.Volume;
if cpEffectCode in Cell2.Parts then
if (not Mix) or (Cell2.Cell.EffectCode <> 0) then
Cell1.EffectCode := Cell2.Cell.EffectCode;
if cpEffectParams in Cell2.Parts then
if (not Mix) or (Cell2.Cell.EffectParams.Value <> 0) then
Cell1.EffectParams.Value := Cell2.Cell.EffectParams.Value;
end;
var
X, Y: Integer;
begin
try
for Y := 0 to High(Paste) do begin
if not InRange(Where.Y+Y, 0, NumRows-1) then Continue;
for X := 0 to High(Paste[Y]) do begin
if not InRange(Where.X+X, Low(Patterns), High(Patterns)) then Continue;
OverlayCell(Patterns[Where.X + X]^[Where.Y + Y], Paste[Y, X]);
end;
end;
Other := Where;
Cursor.X := Other.X + X;
Cursor.Y := Other.Y + Y;
Other.SelectedPart := Low(TCellPart);
Cursor.SelectedPart := High(TCellPart);
except
on E: Exception do
DebugLn('[DEBUG] Clipboard did not contain valid note data!');
end;
end;
procedure TTrackerGrid.PerformPaste(Paste: TSelection; Mix: Boolean = False);
begin
PerformPaste(Paste, Cursor, Mix);
end;
procedure TTrackerGrid.PerformCopy;
begin
end;
procedure TTrackerGrid.DoRepeatPaste;
var
Selection: TSelection;
I: Integer;
begin
BeginUndoAction;
try
Selection := GetPastedCells;
I := Cursor.Y;
while I < NumRows do begin
Cursor.Y := I;
PerformPaste(Selection);
Inc(I, High(Selection)+1);
end;
except
on E: EClipboardFormatException do begin
DebugLn('[WARNING] ', E.Message);
RevertUndoAction;
Exit
end;
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.DoMixPaste;
begin
BeginUndoAction;
try
PerformPaste(GetPastedCells, True);
except
on E: EClipboardFormatException do begin
DebugLn('[WARNING] ', E.Message);
RevertUndoAction;
Exit
end;
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.DoPaste(var Msg: TLMessage);
begin
BeginUndoAction;
try
PerformPaste(GetPastedCells);
except
on E: EClipboardFormatException do begin
DebugLn('[WARNING] ', E.Message);
RevertUndoAction;
Exit
end;
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.DoCopy(var Msg: TLMessage);
begin
CopyCells(GetSelection);
end;
procedure TTrackerGrid.DoCut(var Msg: TLMessage);
begin
DoCopy(Msg);
EraseSelection;
end;
procedure TTrackerGrid.BeginUndoAction;
var
I: Integer;
begin
if NestedUndoCount = 0 then begin
// Save the "before" to our current undo action, so that EndUndoAction
// can save the "after" and commit it to the Performed stack.
CurrentUndoAction := Default(TUndoRedoAction);
for I := Low(Patterns) to High(Patterns) do begin
SetLength(CurrentUndoAction.Before, NumColumns);
SetLength(CurrentUndoAction.After, NumColumns);
with CurrentUndoAction.Before[I] do begin
Pattern := Patterns[I]^;
PatternNumber := PatternNumbers[I];
end;
end;
end;
Inc(NestedUndoCount);
end;
procedure TTrackerGrid.EndUndoAction;
var
I: Integer;
begin
if NestedUndoCount = 1 then begin
// First, clear out the recall stack
while not Recall.IsEmpty do
Recall.Pop;
// Save the "after" to our current undo action
for I := Low(Patterns) to High(Patterns) do
with CurrentUndoAction.After[I] do begin
Pattern := Patterns[I]^;
PatternNumber := PatternNumbers[I];
end;
// Commit the action to the Performed stack
Performed.PushFront(CurrentUndoAction);
// Keep the stack size, at maximum, UNDO_STACK_SIZE
while Performed.Size > UNDO_STACK_SIZE do
Performed.PopBack;
end;
Dec(NestedUndoCount);
end;
procedure TTrackerGrid.RevertUndoAction;
begin
// Don't save the undo action, just decrement the nested undo count.
Dec(NestedUndoCount);
end;
procedure TTrackerGrid.DoUndo;
var
State: TUndoRedoAction;
I: Integer;
begin
if Performed.IsEmpty then Exit;
State := Performed.Front;
Performed.PopFront;
Recall.Push(State);
for I := Low(State.Before) to High(State.Before) do begin
LoadPattern(I, State.Before[I].PatternNumber);
Patterns[I]^ := State.Before[I].Pattern;
end;
Invalidate;
end;
procedure TTrackerGrid.DoRedo;
var
State: TUndoRedoAction;
I: Integer;
begin
if Recall.IsEmpty then Exit;
State := Recall.Top;
Recall.Pop;
Performed.PushFront(State);
for I := Low(State.After) to High(State.After) do begin
LoadPattern(I, State.After[I].PatternNumber);
Patterns[I]^ := State.After[I].Pattern;
end;
Invalidate;
end;
procedure TTrackerGrid.RenderSelectedArea;
begin
Canvas.Pen.Width := 1;
Canvas.Pen.Color := clBlack;
// TODO: Seems like the Cocoa backend doesn't support pmXOR.
// For now, just don't set it, and draw a black box around the thing.
{$ifndef DARWIN}
Canvas.Brush.Color := clWhite;
Canvas.Pen.Mode := pmXOR;
{$endif}
Canvas.Rectangle(SelectionsToRect(Cursor, Other));
Canvas.Pen.Mode := pmCopy;
end;
procedure TTrackerGrid.ClampCursors;
begin
if Cursor.X < 0 then
Cursor.SelectedPart := Low(TCellPart);
if Cursor.X > (NumColumns-1) then
Cursor.SelectedPart := High(TCellPart);
if Other.X < 0 then
Other.SelectedPart := Low(TCellPart);
if Other.X > (NumColumns-1) then
Other.SelectedPart := High(TCellPart);
Cursor.Y := EnsureRange(Cursor.Y, 0, NumRows-1);
Cursor.X := EnsureRange(Cursor.X, Low(TPatternGrid), (NumColumns-1));
Other.Y := EnsureRange(Other.Y, 0, NumRows-1);
Other.X := EnsureRange(Other.X, Low(TPatternGrid), (NumColumns-1));
end;
procedure TTrackerGrid.EnsureCursorVisible;
var
SB: TScrollBox;
CursorRect, SelRect: TRect;
VLeft, VRight, VTop, VBottom: Integer;
CLeft, CRight, CTop, CBottom: Integer;
PadLeft, PadRight, PadTop, PadBottom, I: Integer;
P, ClientW, ClientH: Integer;
Ctrl: TControl;
begin
if not (Parent is TScrollBox) then Exit;
SB := TScrollBox(Parent);
PadLeft := 0; PadRight := 0; PadTop := 0; PadBottom := 0;
for I := 0 to SB.ControlCount - 1 do begin
Ctrl := SB.Controls[I];
if Ctrl = Self then Continue;
case Ctrl.Align of
alLeft: Inc(PadLeft, Ctrl.Width);
alRight: Inc(PadRight, Ctrl.Width);
alTop: Inc(PadTop, Ctrl.Height);
alBottom: Inc(PadBottom, Ctrl.Height);
end;
end;
CursorRect := SelectionToRect(Cursor);
SelRect := SelectionsToRect(Cursor, Other);
// Convert grid-local coords to scrollbox virtual coords by adding Self.Left/Top.
VLeft := SelRect.Left + Self.Left;
VRight := SelRect.Right + Self.Left;
VTop := SelRect.Top + Self.Top;
VBottom := SelRect.Bottom + Self.Top;
CLeft := CursorRect.Left + Self.Left;
CRight := CursorRect.Right + Self.Left;
CTop := CursorRect.Top + Self.Top;
CBottom := CursorRect.Bottom + Self.Top;
ClientH := SB.ClientHeight;
if VBottom - VTop > ClientH - PadTop - PadBottom then begin
VTop := CTop;
VBottom := CBottom;
end;
P := SB.VertScrollBar.Position;
if VTop < P + PadTop then
SB.VertScrollBar.Position := VTop - PadTop
else if VBottom > P + ClientH - PadBottom then
SB.VertScrollBar.Position := VBottom - ClientH + PadBottom;
ClientW := SB.ClientWidth;
if VRight - VLeft > ClientW - PadLeft - PadRight then begin
VLeft := CLeft;
VRight := CRight;
end;
P := SB.HorzScrollBar.Position;
if VLeft < P + PadLeft then
SB.HorzScrollBar.Position := VLeft - PadLeft
else if VRight > P + ClientW - PadRight then
SB.HorzScrollBar.Position := VRight - ClientW + PadRight;
end;
procedure TTrackerGrid.NormalizeCursors;
var
TempI: Integer;
TempS: TCellPart;
begin
ClampCursors;
// Normalize the cursor positions such that cursor is always in the top left
if (Cursor > Other) then begin
TempI := Other.X;
Other.X := Cursor.X;
Cursor.X := TempI;
TempS := Other.SelectedPart;
Other.SelectedPart := Cursor.SelectedPart;
Cursor.SelectedPart := TempS;
end;
if (Cursor.Y > Other.Y) then begin
TempI := Other.Y;
Other.Y := Cursor.Y;
Cursor.Y := TempI;
end;
end;
procedure TTrackerGrid.TransposeSelection(Semitones: Integer);
begin
IncrementSelection(Semitones, 0, 0, 0, 0);
end;
procedure TTrackerGrid.IncrementSelection(Note, Instrument, Volume, EffectCode,
EffectParam: Integer);
var
Pos: TSelectionPos;
begin
BeginUndoAction;
NormalizeCursors;
Pos := Cursor;
while Pos.Y <= Other.Y do begin
while Pos <= Other do begin
case Pos.SelectedPart of
cpNote: IncrementAt(Pos, Note);
cpInstrument: IncrementAt(Pos, Instrument);
cpVolume: IncrementAt(Pos, Volume);
cpEffectCode: IncrementAt(Pos, EffectCode);
cpEffectParams: IncrementAt(Pos, EffectParam);
end;
IncSelectionPos(Pos);
end;
Inc(Pos.Y);
Pos.X := Cursor.X;
Pos.SelectedPart := Cursor.SelectedPart;
end;
Invalidate;
EndUndoAction
end;
procedure TTrackerGrid.InterpolateSelection;
var
S, E, Len: Integer;
Pos: TSelectionPos;
StartCell: TCell;
begin
BeginUndoAction;
NormalizeCursors;
if Cursor.Y = Other.Y then Exit;
if Cursor.SelectedPart = cpEffectCode then begin
Cursor.SelectedPart := cpEffectParams;
Other.SelectedPart := cpEffectParams;
end;
StartCell := Patterns[Cursor.x]^[Cursor.Y];
S := GetAt(Cursor);
E := GetAt(Other);
Len := Other.Y - Cursor.Y;
Pos := Cursor;
while Pos.Y <= Other.Y do begin
SetAt(Pos, Trunc(Lerp(S, E, ((Pos.Y - Cursor.Y) / Len))));
if Pos.SelectedPart = cpEffectParams then
Patterns[Pos.X]^[Pos.Y].EffectCode := StartCell.EffectCode;
Inc(Pos.Y)
end;
Invalidate;
EndUndoAction
end;
procedure TTrackerGrid.ChangeSelectionInstrument;
var
Pos: TSelectionPos;
R: Integer;
begin
BeginUndoAction;
NormalizeCursors;
for R := Cursor.Y to Other.Y do begin
Pos := Cursor;
Pos.Y := R;
while Pos <= Other do begin
with Patterns[Pos.X]^[Pos.Y] do
if Note <> NO_NOTE then
Instrument := SelectedInstrument;
IncSelectionPos(Pos);
end;
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.OpenEffectEditor;
begin
BeginUndoAction;
frmEffectEditor.Cell := @Patterns[Cursor.X]^[Cursor.Y];
frmEffectEditor.ShowModal;
Invalidate;
EndUndoAction
end;
procedure TTrackerGrid.EraseSelection;
var
X: TSelectionPos;
R: Integer;
begin
BeginUndoAction;
NormalizeCursors;
for R := Cursor.Y to Other.Y do begin
X := Cursor;
X.Y := R;
while X <= Other do begin
ClearAt(X);
IncSelectionPos(X);
end;
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.InputNoteValue(Note: Integer);
var
Cell: PCell;
begin
if (Note < LOWEST_NOTE) or (Note > HIGHEST_NOTE) then Exit;
if Cursor.SelectedPart <> cpNote then Exit;
BeginUndoAction;
Cell := @Patterns[Cursor.X]^[Cursor.Y];
Cell^.Note := Note;
if SelectedInstrument <> 0 then
Cell^.Instrument := SelectedInstrument;
Inc(Cursor.Y, Step);
ClampCursors;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.InputNote(Key: Word);
var
Temp: Integer;
begin
if Keybindings.TryGetData(Key, Temp) then
InputNoteValue(Min(HIGHEST_NOTE, Temp + (SelectedOctave * 12)));
end;
procedure TTrackerGrid.InputInstrument(Key: Word);
var
Temp: Nibble;
begin
BeginUndoAction;
with Patterns[Cursor.X]^[Cursor.Y] do begin
if Key = VK_DELETE then Instrument := 0
else if KeycodeToHexNumber(Key, Temp) and InRange(Temp, 0, 9) then
Instrument := ((Instrument mod 10) * 10) + Temp;
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.InputVolume(Key: Word);
begin
end;
procedure TTrackerGrid.InputEffectCode(Key: Word);
begin
BeginUndoAction;
with Patterns[Cursor.X]^[Cursor.Y] do
if Key = VK_DELETE then begin
EffectCode := 0;
EffectParams.Value := 0;
end
else begin
KeycodeToHexNumber(Key, EffectCode);
if EffectParams.Value = 0 then
EffectParams.Value := LastFxParam[EffectCode];
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.InputEffectParams(Key: Word);
var
Temp: Nibble;
begin
BeginUndoAction;
with Patterns[Cursor.X]^[Cursor.Y] do
if Key = VK_DELETE then begin
EffectCode := 0;
EffectParams.Value := 0;
end
else if KeycodeToHexNumber(Key, Temp) then begin
EffectParams.Value := ((EffectParams.Value mod $10) * $10) + Temp;
LastFxParam[EffectCode] := EffectParams.Value;
end;
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.RenderRow(Row: Integer);
var
I: Integer;
begin
with Canvas do begin
Brush.Style := bsClear;
Pen.Color := RGBToColor(58, 52, 39);
for I := 0 to High(Patterns) do
if Assigned(Patterns[I]) then
RenderCell(Patterns[I]^[Row]);
end;
end;
procedure TTrackerGrid.RenderCell(const Cell: TCell);
var
NoteString: ShortString;
begin
with Canvas do begin
if NoteMap.TryGetData(Cell.Note, NoteString) then begin
Font.Color := clNote;
TextOut(PenPos.X, PenPos.Y, NoteString);
end
else begin
Font.Color := clDots;
if Cell.Note = NO_NOTE then
TextOut(PenPos.X, PenPos.Y, '...')
else
TextOut(PenPos.X, PenPos.Y, '???');
end;
TextOut(PenPos.X, PenPos.Y, ' ');
if Cell.Instrument <> 0 then begin
Font.Color := clInstrument;
TextOut(PenPos.X, PenPos.Y, FormatFloat('00', Cell.Instrument));
end
else begin
Font.Color := clDots;
TextOut(PenPos.X, PenPos.Y, '..');
end;
//Font.Color := clDark; //clGreen;
Font.Color := clDots;
TextOut(PenPos.X, PenPos.Y, '...');
if (Cell.EffectCode <> 0) or (Cell.EffectParams.Value <> 0) then begin
Font.Color := GetEffectColor(Cell.EffectCode);
TextOut(
PenPos.X,
PenPos.Y,
IntToHex(Cell.EffectCode, 1)
+ IntToHex(Cell.EffectParams.Param1, 1)
+ IntToHex(Cell.EffectParams.Param2, 1)
);
end
else begin
Font.Color := clDots;
TextOut(PenPos.X, PenPos.Y, '...');
end;
TextOut(PenPos.X, PenPos.Y, ' ');
end;
end;
procedure TTrackerGrid.SetHighlightedRow(Row: Integer);
//var
//R: TRect;
//OldRow: Integer;
begin
//OldRow := FHighlightedRow;
FHighlightedRow := Row;
Invalidate
// An optimization to redraw the pattern faster. This function gets called
// a lot (every time the FD callback happens) so it needs to be fast. It can
// sort of lag out the main thread if it just does a full invalidate.
// For some reason it's flakey whether or not it works, so we're just doing
// a full invalidate right now...
{R.Left:=0;
R.Width:=ColumnWidth*4;
R.Height:=RowHeight*2;
if InRange(OldRow, Low(TPattern), High(TPattern)) then begin
RenderRow(OldRow);
R.Top:=(OldRow-1)*RowHeight;
InvalidateRect(Self.Handle, @R, True);
end;
R.Left:=0;
R.Width:=ColumnWidth*4;
R.Height:=RowHeight*2;
if InRange(Row, Low(TPattern), High(TPattern)) then begin
RenderRow(Row);
R.Top:=(Row-1)*RowHeight;
InvalidateRect(Self.Handle, @R, True);
end;}
end;
procedure TTrackerGrid.SetSelectionGridRect(R: TRect);
begin
Cursor.X := R.Left;
Other.X := R.Right;
Cursor.Y := R.Top;
Other.Y := R.Bottom;
end;
function TTrackerGrid.GetSelectionGridRect: TRect;
begin
Result := TRect.Create(
TPoint.Create(Cursor.X, Cursor.Y),
TPoint.Create(Other.X, Other.Y),
True
);
end;
function TTrackerGrid.GetEffectColor(EffectCode: Integer): TColor;
begin
Result := clBlack;
case EffectCode of
$0: Result := clFxMisc;
$1: Result := clFxPitch;
$2: Result := clFxPitch;
$3: Result := clFxPitch;
$4: Result := clFxPitch;
$5: Result := clFxSong;
$6: Result := clFxMisc;
$7: Result := clFxMisc;
$8: Result := clFxPan;
$9: Result := clFxSong;
$A: Result := clFxVolume;
$B: Result := clFxSong;
$C: Result := clFxVolume;
$D: Result := clFxSong;
$E: Result := clFxMisc;
$F: Result := clFxSong;
end;
end;
function TTrackerGrid.SelectionsToRect(S1, S2: TSelectionPos): TRect;
begin
Result := SelectionToRect(S1);
Result.Union(SelectionToRect(S2));
end;
function TTrackerGrid.SelectionToRect(Selection: TSelectionPos): TRect;
var
CharLeft, CharRight: Integer;
begin
case Selection.SelectedPart of
cpNote: begin
CharLeft := 0;
CharRight := 3;
end;
cpInstrument: begin
CharLeft := 4;
CharRight := 6
end;
cpVolume: begin
CharLeft := 6;
CharRight := 9;
end;
cpEffectCode: begin
CharLeft := 9;
CharRight := 10;
end;
cpEffectParams: begin
CharLeft := 10;
CharRight := 12;
end;
end;
Result.Left := (Selection.X*ColumnWidth) + (CharLeft*CharWidth);
Result.Right := (Selection.X*ColumnWidth) + (CharRight*CharWidth);
Result.Top := (Selection.Y*RowHeight);
Result.Bottom := (Selection.Y*RowHeight) + RowHeight;
end;
function TTrackerGrid.MousePosToSelection(X, Y: Integer): TSelectionPos;
var
OrigX: Integer;
begin
OrigX := X;
X := EnsureRange(Width-1, 0, X);
Y := EnsureRange(Height-1, 0, Y);
Result.X := Trunc((X/Width)*NumColumns);
Result.Y := Trunc((Y/Height)*NumRows);
if OrigX <= 0 then
Result.SelectedPart := cpNote
else begin
X := X mod ColumnWidth;
X := Trunc((X/ColumnWidth)*13);
case X of
0..3: Result.SelectedPart := cpNote;
4..5: Result.SelectedPart := cpInstrument;
6..8: Result.SelectedPart := cpVolume;
9: Result.SelectedPart := cpEffectCode;
10..12: Result.SelectedPart := cpEffectParams;
end;
end;
end;
function TTrackerGrid.KeycodeToHexNumber(Key: Word; var Num: Nibble): Boolean;
begin
Result := True;
case Key of
VK_0: Num := $0;
VK_1: Num := $1;
VK_2: Num := $2;
VK_3: Num := $3;
VK_4: Num := $4;
VK_5: Num := $5;
VK_6: Num := $6;
VK_7: Num := $7;
VK_8: Num := $8;
VK_9: Num := $9;
VK_NUMPAD0: Num := $0;
VK_NUMPAD1: Num := $1;
VK_NUMPAD2: Num := $2;
VK_NUMPAD3: Num := $3;
VK_NUMPAD4: Num := $4;
VK_NUMPAD5: Num := $5;
VK_NUMPAD6: Num := $6;
VK_NUMPAD7: Num := $7;
VK_NUMPAD8: Num := $8;
VK_NUMPAD9: Num := $9;
VK_A: Num := $A;
VK_B: Num := $B;
VK_C: Num := $C;
VK_D: Num := $D;
VK_E: Num := $E;
VK_F: Num := $F;
else Result := False;
end;
end;
function TTrackerGrid.KeycodeToHexNumber(Key: Word; var Num: Integer): Boolean;
var
X: Nibble;
begin
Result := KeycodeToHexNumber(Key, X);
if Result then Num := X;
end;
procedure TTrackerGrid.ChangeFontSize;
begin
// Kind of a hack
with Canvas.Font do begin
if Screen.Fonts.IndexOf('PixeliteTTF') >= 0 then begin
Name := 'PixeliteTTF';
Style := [];
end
else
begin
Name := 'Courier New';
Style := [fsBold];
end;
Size := FontSize;
ColumnWidth := GetTextWidth('C-5 01v64C01 ');
RowHeight := GetTextHeight('C-5 01v64C01 ');
CharHeight := RowHeight;
CharWidth := GetTextWidth('C');
end;
Width := ColumnWidth*NumColumns;
Height := RowHeight*NumRows;
end;
procedure TTrackerGrid.SetFontSize(AValue: Integer);
begin
if FFontSize=AValue then Exit;
FFontSize:=AValue;
ChangeFontSize;
Invalidate;
end;
function TTrackerGrid.GetAt(SelectionPos: TSelectionPos): Integer;
begin
Result := 0;
with Patterns[SelectionPos.X]^[SelectionPos.Y] do
case SelectionPos.SelectedPart of
cpNote: Result := Note;
cpInstrument: Result := Instrument;
cpVolume:;
cpEffectCode: Result := EffectCode;
cpEffectParams: Result := EffectParams.Value;
end;
end;
procedure TTrackerGrid.SetAt(SelectionPos: TSelectionPos; Value: Integer);
begin
with Patterns[SelectionPos.X]^[SelectionPos.Y] do
case SelectionPos.SelectedPart of
cpNote: Note := Value;
cpInstrument: Instrument := Value;
cpVolume:;
cpEffectCode: EffectCode := Value;
cpEffectParams: EffectParams.Value := Value;
end;
end;
procedure TTrackerGrid.IncrementAt(SelectionPos: TSelectionPos; Value: Integer);
begin
with Patterns[SelectionPos.X]^[SelectionPos.Y] do
case SelectionPos.SelectedPart of
cpNote:
if Note <> NO_NOTE then
Note := EnsureRange(Note+Value, LOWEST_NOTE, HIGHEST_NOTE);
cpInstrument:
if Instrument <> 0 then
Instrument := EnsureRange(Instrument+Value, 1, 15);
cpVolume:;
cpEffectCode:
EffectCode := EnsureRange(EffectCode+Value, $0, $F);
cpEffectParams:
if EffectCode = $0 then begin
if EffectParams.Value <> $00 then
EffectParams.Value := EnsureRange(EffectParams.Value+Value, Low(Byte)+1, High(Byte));
end
else
EffectParams.Value := EnsureRange(EffectParams.Value+Value, Low(Byte), High(Byte));
end;
end;
procedure TTrackerGrid.ClearAt(SelectionPos: TSelectionPos);
begin
with Patterns[SelectionPos.X]^[SelectionPos.Y] do
case SelectionPos.SelectedPart of
cpNote: Note := NO_NOTE;
cpInstrument: Instrument := 0;
cpVolume: Volume := 0;
cpEffectCode: begin
EffectCode := 0;
EffectParams.Value := 0;
end;
cpEffectParams: EffectParams.Value := 0;
end;
end;
procedure TTrackerGrid.InsertRowInPatternAtCursor(Pattern: Integer);
var
I: Integer;
begin
BeginUndoAction;
NormalizeCursors;
for I := NumRows-1 downto Cursor.Y do
Patterns[Pattern]^[I] := Patterns[Pattern]^[I-1];
BlankCell(Patterns[Pattern]^[Cursor.Y]);
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.InsertRowInAllAtCursor;
var
I: Integer;
begin
BeginUndoAction;
for I := Low(Patterns) to High(Patterns) do
InsertRowInPatternAtCursor(I);
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.DeleteRowInPatternAtCursor(Pattern: Integer);
var
I: Integer;
begin
BeginUndoAction;
NormalizeCursors;
for I := Cursor.Y to NumRows-2 do
Patterns[Pattern]^[I] := Patterns[Pattern]^[I+1];
BlankCell(Patterns[Pattern]^[NumRows-1]);
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.DeleteRowInAllAtCursor;
var
I: Integer;
begin
BeginUndoAction;
for I := Low(Patterns) to High(Patterns) do
DeleteRowInPatternAtCursor(I);
Invalidate;
EndUndoAction;
end;
procedure TTrackerGrid.SelectAll;
begin
Cursor.X := 0;
Cursor.Y := 0;
Cursor.SelectedPart := cpNote;
Other.X := High(Patterns);
Other.Y := NumRows-1;
Other.SelectedPart := cpEffectParams;
Invalidate;
end;
procedure TTrackerGrid.SelectColumn;
begin
Cursor.Y := 0;
Other.Y := NumRows-1;
Cursor.SelectedPart := Low(TCellPart);
Other.SelectedPart := High(TCellPart);
Invalidate;
end;
procedure TTrackerGrid.LoadPattern(Idx: Integer; PatternNumber: Integer);
begin
Patterns[Idx] := PatternMap.GetOrCreateNew(PatternNumber);
PatternNumbers[Idx] := PatternNumber; // Ugh
Invalidate;
end;
end.
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