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{
fpGUI - Free Pascal GUI Library
Copyright (C) 2006 - 2007 See the file AUTHORS.txt, included in this
distribution, for details of the copyright.
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Description:
Defines a Bevel control. Also known as a Panel or Frame control.
}
unit gui_bevel;
{$mode objfpc}{$H+}
interface
uses
Classes,
SysUtils,
fpgfx,
gfxbase,
gfx_widget;
type
TBevelShape = (bsBox, bsFrame, bsTopLine, bsBottomLine, bsLeftLine, bsRightLine, bsSpacer);
TBevelStyle = (bsLowered, bsRaised);
TfpgBevel = class(TfpgWidget)
private
FBevelShape: TBevelShape;
FBevelStyle: TBevelStyle;
procedure SetBevelShape(const AValue: TBevelShape);
procedure SetBevelStyle(const AValue: TBevelStyle);
protected
procedure HandlePaint; override;
public
constructor Create(AOwner: TComponent); override;
published
property Shape: TBevelShape read FBevelShape write SetBevelShape default bsBox;
property Style: TBevelStyle read FBevelStyle write SetBevelStyle default bsRaised;
end;
function CreateBevel(AOwner: TComponent; ALeft, ATop, AWidth, AHeight: TfpgCoord;
AShape: TBevelShape; AStyle: TBevelStyle): TfpgBevel;
implementation
function CreateBevel(AOwner: TComponent; ALeft, ATop, AWidth,
AHeight: TfpgCoord; AShape: TBevelShape; AStyle: TBevelStyle): TfpgBevel;
begin
Result := TfpgBevel.Create(AOwner);
Result.Left := ALeft;
Result.Top := ATop;
Result.Width := AWidth;
Result.Height := AHeight;
Result.Shape := AShape;
Result.Style := AStyle;
end;
{ TfpgBevel }
procedure TfpgBevel.SetBevelShape(const AValue: TBevelShape);
begin
if FBevelShape = AValue then
Exit; //==>
FBevelShape := AValue;
Repaint;
end;
procedure TfpgBevel.SetBevelStyle(const AValue: TBevelStyle);
begin
if FBevelStyle = AValue then
Exit; //==>
FBevelStyle := AValue;
Repaint;
end;
procedure TfpgBevel.HandlePaint;
begin
Canvas.BeginDraw;
inherited HandlePaint;
Canvas.Clear(clWindowBackground);
// Canvas.SetLineStyle(2, lsSolid);
// Canvas.SetColor(clWindowBackground);
// Canvas.DrawRectangle(1, 1, Width - 1, Height - 1);
Canvas.SetLineStyle(1, lsSolid);
if Style = bsRaised then
Canvas.SetColor(clHilite2)
else
Canvas.SetColor(clShadow2);
if Shape in [bsBox, bsFrame, bsTopLine] then
Canvas.DrawLine(0, 0, Width - 1, 0);
if Shape in [bsBox, bsFrame, bsLeftLine] then
Canvas.DrawLine(0, 1, 0, Height - 1);
if Shape in [bsFrame, bsRightLine] then
Canvas.DrawLine(Width - 2, 1, Width - 2, Height - 1);
if Shape in [bsFrame, bsBottomLine] then
Canvas.DrawLine(1, Height - 2, Width - 1, Height - 2);
if Style = bsRaised then
Canvas.SetColor(clShadow2)
else
Canvas.SetColor(clHilite2);
if Shape in [bsFrame, bsTopLine] then
Canvas.DrawLine(1, 1, Width - 2, 1);
if Shape in [bsFrame, bsLeftLine] then
Canvas.DrawLine(1, 2, 1, Height - 2);
if Shape in [bsBox, bsFrame, bsRightLine] then
Canvas.DrawLine(Width - 1, 0, Width - 1, Height - 1);
if Shape in [bsBox, bsFrame, bsBottomLine] then
Canvas.DrawLine(0, Height - 1, Width, Height - 1);
Canvas.EndDraw;
end;
constructor TfpgBevel.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FBevelShape := bsBox;
FBevelStyle := bsRaised;
FWidth := 80;
FHeight := 80;
FFocusable := True; // otherwise children can't get focus
end;
end.
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