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unit gui_label;
{$mode objfpc}{$H+}
interface
uses
Classes,
SysUtils,
gfxbase,
fpgfx,
gfx_widget;
type
TfpgLabel = class(TfpgWidget)
private
FAutoSize: boolean;
FBackgroundColor: TfpgColor;
FColor: TfpgColor;
function GetFontDesc: string;
procedure SetAutoSize(const AValue: boolean);
procedure SetBackgroundColor(const AValue: TfpgColor);
procedure SetFontDesc(const AValue: string);
procedure SetColor(const AValue: TfpgColor);
procedure SetText(const AValue: string);
procedure ResizeLabel;
protected
FText: string;
FFont: TfpgFont;
procedure HandlePaint; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
property Font: TfpgFont read FFont;
published
property AutoSize: boolean read FAutoSize write SetAutoSize default True;
property Text: string read FText write SetText;
property FontDesc: string read GetFontDesc write SetFontDesc;
property Color: TfpgColor read FColor write SetColor;
property BackgroundColor: TfpgColor read FBackgroundColor write SetBackgroundColor;
property OnMouseMove;
end;
TLabelClass = class of TfpgLabel;
function CreateLabel(AOwner: TComponent; x, y: TfpgCoord; AText: string): TfpgLabel;
implementation
function CreateLabel(AOwner: TComponent; x, y: TfpgCoord; AText: string): TfpgLabel;
begin
Result := TfpgLabel.Create(AOwner);
Result.Left := x;
Result.Top := y;
Result.Text := AText;
Result.Width := Result.Font.TextWidth(Result.Text);
end;
{ TfpgLabel }
procedure TfpgLabel.SetColor(const AValue: TfpgColor);
begin
if FColor = AValue then
Exit;
FColor := AValue;
RePaint;
end;
function TfpgLabel.GetFontDesc: string;
begin
Result := FFont.FontDesc;
end;
procedure TfpgLabel.SetAutoSize(const AValue: boolean);
begin
if FAutoSize = AValue then
Exit; //==>
FAutoSize := AValue;
if FAutoSize then
begin
ResizeLabel;
RePaint;
end;
end;
procedure TfpgLabel.SetBackgroundColor(const AValue: TfpgColor);
begin
if FBackgroundColor = AValue then
Exit;
FBackgroundColor := AValue;
RePaint;
end;
procedure TfpgLabel.SetFontDesc(const AValue: string);
begin
FFont.Free;
FFont := fpgGetFont(AValue);
if FAutoSize then
ResizeLabel;
RePaint;
end;
procedure TfpgLabel.SetText(const AValue: string);
begin
if FText = AValue then
Exit;
FText := AValue;
if FAutoSize then
ResizeLabel;
RePaint;
end;
procedure TfpgLabel.ResizeLabel;
begin
Width := FFont.TextWidth(FText);
Height := FFont.Height;
UpdateWindowPosition;
end;
constructor TfpgLabel.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FText := 'Label';
FFont := fpgGetFont('#Label1');
FHeight := FFont.Height;
FWidth := 80;
FColor := clText1;
FBackgroundColor := clWindowBackground;
FAutoSize := True;
end;
destructor TfpgLabel.Destroy;
begin
FText := '';
FFont.Free;
inherited Destroy;
end;
procedure TfpgLabel.HandlePaint;
begin
Canvas.BeginDraw;
inherited;
Canvas.Clear(FBackgroundColor);
Canvas.SetFont(Font);
Canvas.SetTextColor(FColor);
Canvas.DrawString(0, 0, FText);
Canvas.EndDraw;
end;
end.
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