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////////////////////////////////////////////////////////////////////////////////
// All code below is exclusively owned by author of Chess4Net - Pavel Perminov
// (packpaul@mail.ru, packpaul1@gmail.com).
// Any changes, modifications, borrowing and adaptation are a subject for
// explicit permition from the owner.
unit PromotionUnit;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls,
// Chess4net
ChessRulesEngine, ChessBoardHeaderUnit, BitmapResUnit;
type
TPromotionForm = class(TForm)
PromFigImage: TImage;
procedure FormShow(Sender: TObject);
procedure PromFigImageMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure FormKeyPress(Sender: TObject; var Key: Char);
private
m_iSquareSize: integer;
m_BitmapRes: TBitmapRes;
m_bmFigure: array[TFigure] of TBitmap;
m_fig_color: TFigureColor;
m_fig: TFigureName;
procedure FLoadFigures;
public
function ShowPromotion(color: TFigureColor): TFigureName;
constructor Create(AOwner: TComponent; BitmapRes: TBitmapRes); reintroduce;
destructor Destroy; override;
end;
implementation
{$R *.dfm}
const
INDENT_SIZE = 2;
////////////////////////////////////////////////////////////////////////////////
// TPromotionForm
procedure TPromotionForm.FormShow(Sender: TObject);
procedure NCorrectIfOutOfScreen(var iLeft, iTop: integer);
var
R: TRect;
M: TMonitor;
frmOwner: TForm;
begin
if (Assigned(Owner)) then
frmOwner := (Owner as TForm)
else
frmOwner := nil;
if (Assigned(frmOwner)) then
begin
M := Screen.MonitorFromRect(frmOwner.BoundsRect);
R := M.WorkareaRect;
end
else
R := Screen.WorkAreaRect;
if ((iLeft + self.Width) > R.Right) then
iLeft := R.Right - self.Width;
if (iLeft < R.Left) then
iLeft := R.Left;
if ((iTop + self.Height) > R.Bottom) then
iTop := R.Bottom - self.Height;
if (iTop < R.Top) then
iTop := R.Top;
end;
var
k: byte;
iLeft, iTop: integer;
begin // TPromotionForm.FormShow
if (m_iSquareSize <> m_BitmapRes.SquareSize) then
FLoadFigures;
// Óñòàíîâèòü îêíî â ïðåäåëàõ êóðñîðà
iLeft := Mouse.CursorPos.X - m_iSquareSize div 2;
iTop := Mouse.CursorPos.Y - m_iSquareSize div 2;
NCorrectIfOutOfScreen(iLeft, iTop);
Left := iLeft;
Top := iTop;
with PromFigImage.Canvas do
begin
Brush.Color:= Color;
FillRect(Rect(0,0, Width, PromFigImage.Height));
Brush.Color:= clWhite;
for k := 0 to 3 do
FillRect(Rect((m_iSquareSize + INDENT_SIZE) * k, 0,
(m_iSquareSize + INDENT_SIZE) * k + m_iSquareSize - 1, m_iSquareSize - 1));
case m_fig_color of
fcWhite:
begin
Draw(0, 0, m_bmFigure[WQ]);
Draw(m_iSquareSize + 2, 0, m_bmFigure[WR]);
Draw(2 * (m_iSquareSize + INDENT_SIZE), 0, m_bmFigure[WB]);
Draw(3 * (m_iSquareSize + INDENT_SIZE), 0, m_bmFigure[WN]);
end;
fcBlack:
begin
Draw(0, 0, m_bmFigure[BQ]);
Draw(m_iSquareSize + INDENT_SIZE, 0, m_bmFigure[BR]);
Draw(2 * (m_iSquareSize + INDENT_SIZE), 0, m_bmFigure[BB]);
Draw(3 * (m_iSquareSize + INDENT_SIZE), 0, m_bmFigure[BN]);
end;
end;
end;
end;
function TPromotionForm.ShowPromotion(color: TFigureColor): TFigureName;
begin
m_fig := Q;
m_fig_color := color;
ShowModal;
Result := m_fig;
end;
procedure TPromotionForm.PromFigImageMouseUp(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
case X div (m_BitmapRes.SquareSize + 1) of
1: m_fig := R;
2: m_fig := B;
3: m_fig := N;
else
m_fig := Q;
end;
Close;
end;
procedure TPromotionForm.FormKeyPress(Sender: TObject; var Key: Char);
begin
Key:= UpCase(Key);
case Key of
'Q', '1', ' ', #13:
m_fig:= Q;
'R', '2':
m_fig:= R;
'B', '3':
m_fig:= B;
'N', '4':
m_fig:= N;
else
exit;
end;
Close;
end;
constructor TPromotionForm.Create(AOwner: TComponent; BitmapRes: TBitmapRes);
begin
self.FormStyle := (AOwner as TForm).FormStyle;
inherited Create(AOwner);
m_BitmapRes := BitmapRes;
FLoadFigures;
end;
destructor TPromotionForm.Destroy;
var
fig: TFigure;
begin
for fig := Low(m_bmFigure) to High(m_bmFigure) do
m_bmFigure[fig].Free;
inherited;
end;
procedure TPromotionForm.FLoadFigures;
var
fig: TFigure;
begin
for fig := Low(m_bmFigure) to High(m_bmFigure) do
begin
FreeAndNil(m_bmFigure[fig]);
m_BitmapRes.CreateFigureBitmap(fig, m_bmFigure[fig]);
end;
m_iSquareSize := m_BitmapRes.SquareSize;
// Adjust size of the form
PromFigImage.Width := 4 * m_iSquareSize + 3 * INDENT_SIZE;
PromFigImage.Height := m_iSquareSize;
end;
end.
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