xpmenu.pas

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{
XPMenu for Delphi
Author: Khaled Shagrouni
URL: http://www.shagrouni.com
e-mail: [e-mail]
Version 1.501 (BETA), 29 July, 2001


XPMenu is a Delphi component to mimic Office XP menu and toolbar style.
Copyright (C) 2001 Khaled Shagrouni.

This component is FREEWARE with source code. I still hold the copyright.
If you make any modifications to the code, please send them to me.
If you have any ideas for improvement or bug reports, don't hesitate to e-mail me.



History:
========

July 29, 2001, V1.501
   - Adding AutoDetect property.
   - Compatibility issues with Delphi4.
July 25, 2001, V1.5
   - Support for TToolbar.
   - Getting closer to XP style appearance.
   - New options.
june 23, 2001
   - Compatibility issues with Delphi4.
   - Changing the way of menus itration.
   - Making the blue select rectangle little thinner.

june 21, 2001
  Bug fixes:
   - Items correctly sized even if no image list assigned.
   - Shaded colors for top menu items if fixed for some menu bar colors.
  (Actually the bugs was due to two statements deleted by me stupidly/accidentally)

June 19, 2001
  This component is based on code which I have posted at Delphi3000.com
  (http://www.delphi3000/articles/article_2246.asp) and Borland Code-Central
  (http://codecentral.borland.com/codecentral/ccweb.exe/listing?id=16120).


}
//____________________________________________________________________________


{$IFDEF VER130}
{$DEFINE VER5U}
{$ENDIF}

{$IFDEF VER140}
{$DEFINE VER5U}
{$ENDIF}


unit XPMenu;

interface

uses
  Windows, SysUtils, Classes, Graphics, Controls, ComCtrls,  Forms,
  Menus, Messages, Commctrl;

type
  TXPMenu = class(TComponent)
  private
    FActive: boolean;
    FForm: TForm;
    FFont: TFont;
    FColor: TColor;
    FIconBackColor: TColor;
    FMenuBarColor: TColor;
    FCheckedColor: TColor;
    FSeparatorColor: TColor;
    FSelectBorderColor: TColor;
    FSelectColor: TColor;
    FDisabledColor: TColor;
    FSelectFontColor: TColor;
    FIconWidth: integer;
    FDrawSelect: boolean;
    FUseSystemColors: boolean;

    FFColor, FFIconBackColor, FFSelectColor, FFSelectBorderColor,
    FFSelectFontColor, FCheckedAreaColor, FCheckedAreaSelectColor,
    FFCheckedColor, FFMenuBarColor, FFDisabledColor, FFSeparatorColor,
    FMenuBorderColor, FMenuShadowColor: TColor;

    Is16Bit: boolean;
    FOverrideOwnerDraw: boolean;
    FGradient: boolean;
    ImgLstHandle: HWND;
    ImgLstIndex: integer;
    FFlatMenu: boolean;
    FAutoDetect: boolean;

    procedure SetActive(const Value: boolean);
    procedure SetAutoDetect(const Value: boolean);
    procedure SetForm(const Value: TForm);
    procedure SetFont(const Value: TFont);
    procedure SetColor(const Value: TColor);
    procedure SetIconBackColor(const Value: TColor);
    procedure SetMenuBarColor(const Value: TColor);
    procedure SetCheckedColor(const Value: TColor);
    procedure SetDisabledColor(const Value: TColor);
    procedure SetSelectColor(const Value: TColor);
    procedure SetSelectBorderColor(const Value: TColor);
    procedure SetSeparatorColor(const Value: TColor);
    procedure SetSelectFontColor(const Value: TColor);
    procedure SetIconWidth(const Value: integer);
    procedure SetDrawSelect(const Value: boolean);
    procedure SetUseSystemColors(const Value: boolean);
    procedure SetOverrideOwnerDraw(const Value: boolean);
    procedure SetGradient(const Value: boolean);
    procedure SetFlatMenu(const Value: boolean);



  protected
    procedure InitMenueItems(Enable: boolean);
    procedure DrawItem(Sender: TObject; ACanvas: TCanvas; ARect: TRect;
      Selected: Boolean);
    procedure MenueDrawItem(Sender: TObject; ACanvas: TCanvas; ARect: TRect;
      Selected: Boolean);
    procedure ActivateMenuItem(MenuItem: TMenuItem);
    procedure SetGlobalColor(ACanvas: TCanvas);
    procedure DrawTopMenuItem(Sender: TObject; ACanvas: TCanvas; ARect: TRect;
      IsRightToLeft: boolean);
    procedure DrawCheckedItem(FMenuItem: TMenuItem; Selected,
     HasImgLstBitmap: boolean; ACanvas: TCanvas; CheckedRect: TRect);
    procedure DrawTheText(txt, ShortCuttext: string; ACanvas: TCanvas;
     TextRect: TRect; Selected, Enabled, Default, TopMenu,
     IsRightToLeft: boolean; TextFormat: integer);
    procedure DrawIcon(Sender: TObject; ACanvas: TCanvas; B: TBitmap;
     IconRect: Trect; Hot, Selected, Enabled, Checked, FTopMenu,
     IsRightToLeft: boolean);
    procedure DrawArrow(ACanvas: TCanvas; X, Y: integer);
    procedure MeasureItem(Sender: TObject; ACanvas: TCanvas;
      var Width, Height: Integer);

    function GetImageExtent(MenuItem: TMenuItem): TPoint;
    procedure ToolBarDrawButton(Sender: TToolBar;
      Button: TToolButton; State: TCustomDrawState; var DefaultDraw: Boolean);

    function TopMenuFontColor(ACanvas: TCanvas; Color: TColor): TColor;
    procedure DrawGradient(ACanvas: TCanvas; ARect: TRect;
     IsRightToLeft: boolean);

    procedure DrawWindowBorder(hWnd: HWND; IsRightToLeft: boolean);
    procedure Notification(AComponent: TComponent;
      Operation: TOperation); override;


  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    property Form: TForm read FForm write SetForm;
  published
    property Font: TFont read FFont write SetFont;
    property Color: TColor read FColor write SetColor;
    property IconBackColor: TColor read FIconBackColor write SetIconBackColor;
    property MenuBarColor: TColor read FMenuBarColor write SetMenuBarColor;
    property SelectColor: TColor read FSelectColor write SetSelectColor;
    property SelectBorderColor: TColor read FSelectBorderColor
     write SetSelectBorderColor;
    property SelectFontColor: TColor read FSelectFontColor
     write SetSelectFontColor;
    property DisabledColor: TColor read FDisabledColor write SetDisabledColor;
    property SeparatorColor: TColor read FSeparatorColor
     write SetSeparatorColor;
    property CheckedColor: TColor read FCheckedColor write SetCheckedColor;
    property IconWidth: integer read FIconWidth write SetIconWidth;
    property DrawSelect: boolean read FDrawSelect write SetDrawSelect;
    property UseSystemColors: boolean read FUseSystemColors
     write SetUseSystemColors;
    property OverrideOwnerDraw: boolean read FOverrideOwnerDraw
     write SetOverrideOwnerDraw;

    property Gradient: boolean read FGradient write SetGradient;
    property FlatMenu: boolean read FFlatMenu write SetFlatMenu;
    property AutoDetect: boolean read FAutoDetect write SetAutoDetect;
    property Active: boolean read FActive write SetActive;
  end;

function GetShadeColor(ACanvas: TCanvas; clr: TColor; Value: integer): TColor;
function NewColor(ACanvas: TCanvas; clr: TColor; Value: integer): TColor;
procedure DimBitmap(ABitmap: TBitmap; Value: integer);
function GrayColor(ACanvas: TCanvas; clr: TColor; Value: integer): TColor;
procedure GrayBitmap(ABitmap: TBitmap; Value: integer);
procedure DrawBitmapShadow(B: TBitmap; ACanvas: TCanvas; X, Y: integer;
  ShadowColor: TColor);



procedure GetSystemMenuFont(Font: TFont);
procedure Register;

implementation


procedure Register;
begin
  RegisterComponents('XP', [TXPMenu]);
end;

{ TXPMenue }

constructor TXPMenu.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FFont := TFont.Create;
  GetSystemMenuFont(FFont);
  FForm := TForm(Owner);

  FUseSystemColors := true;


  FColor := clBtnFace;
  FIconBackColor := clBtnFace;
  FSelectColor := clHighlight;
  FSelectBorderColor := clHighlight;
  FMenuBarColor := clBtnFace;
  FDisabledColor := clInactiveCaption;
  FSeparatorColor := clBtnFace;
  FCheckedColor := clHighlight;
  FSelectFontColor := FFont.Color;

  FIconWidth := 24;
  FDrawSelect := true;

  if FActive then
  begin
    InitMenueItems(true);
  end;

end;

destructor TXPMenu.Destroy;
begin
  InitMenueItems(false);
  FFont.Free;

  inherited;
end;



procedure TXPMenu.ActivateMenuItem(MenuItem: TMenuItem);

  procedure Activate(MenuItem: TMenuItem);
  begin
    if addr(MenuItem.OnDrawItem) <> addr(TXPMenu.DrawItem) then
    begin
      if (not assigned(MenuItem.OnDrawItem)) or (FOverrideOwnerDraw) then
        MenuItem.OnDrawItem := DrawItem;
      if (not assigned(MenuItem.OnMeasureItem)) or (FOverrideOwnerDraw) then
        MenuItem.OnMeasureItem := MeasureItem;
    end
  end;

var
  i, j: integer;
begin

  Activate(MenuItem);
  for i := 0 to MenuItem.Parent.Count -1 do
  begin
    Activate(MenuItem.Parent.Items[i]);
    for j := 0 to MenuItem.Parent.Items[i].Count - 1 do
      ActivateMenuItem(MenuItem.Parent.Items[i].Items[j]);
  end;

end;

procedure TXPMenu.InitMenueItems(Enable: boolean);

  procedure Activate(MenuItem: TMenuItem);
  begin
    if Enable then
    begin
      if (not assigned(MenuItem.OnDrawItem)) or (FOverrideOwnerDraw) then
        MenuItem.OnDrawItem := DrawItem;
      if (not assigned(MenuItem.OnMeasureItem)) or (FOverrideOwnerDraw) then
        MenuItem.OnMeasureItem := MeasureItem;
    end
    else
    begin
      if addr(MenuItem.OnDrawItem) = addr(TXPMenu.DrawItem) then
        MenuItem.OnDrawItem := nil;
      if addr(MenuItem.OnMeasureItem) = addr(TXPMenu.MeasureItem) then
        MenuItem.OnMeasureItem := nil;
    end;
  end;

  procedure ItrateMenu(MenuItem: TMenuItem);
  var
    i: integer;
  begin
    Activate(MenuItem);
    for i := 0 to MenuItem.Count - 1 do
      ItrateMenu(MenuItem.Items[i]);
  end;


var
  i, x: integer;
begin
  for i := 0 to FForm.ComponentCount - 1 do
  begin
    if FForm.Components[i] is TMainMenu then
    begin
      for x := 0 to TMainMenu(FForm.Components[i]).Items.Count - 1 do
      begin
        TMainMenu(FForm.Components[i]).OwnerDraw := Enable;//Thanks Yann.
        Activate(TMainMenu(FForm.Components[i]).Items[x]);
        ItrateMenu(TMainMenu(FForm.Components[i]).Items[x]);
      end;
    end;
    if FForm.Components[i] is TPopupMenu then
    begin
      for x := 0 to TPopupMenu(FForm.Components[i]).Items.Count - 1 do
      begin
        TPopupMenu(FForm.Components[i]).OwnerDraw := Enable;
        Activate(TMainMenu(FForm.Components[i]).Items[x]);
        ItrateMenu(TMainMenu(FForm.Components[i]).Items[x]);
      end;
    end;

    if FForm.Components[i] is TToolBar then
      if not (csDesigning in ComponentState) then
      begin
        if not TToolBar(FForm.Components[i]).Flat then
          TToolBar(FForm.Components[i]).Flat := true;

        if Enable then
        begin
          for x := 0 to TToolBar(FForm.Components[i]).ButtonCount - 1 do
            if (not assigned(TToolBar(FForm.Components[i]).OnCustomDrawButton))
              or (FOverrideOwnerDraw) then
            begin
              TToolBar(FForm.Components[i]).OnCustomDrawButton :=
                ToolBarDrawButton;

            end;
        end
        else
        begin
          if addr(TToolBar(FForm.Components[i]).OnCustomDrawButton) =
            addr(TXPMenu.ToolBarDrawButton) then
            TToolBar(FForm.Components[i]).OnCustomDrawButton := nil;

        end;
      end;
  end;
end;

procedure TXPMenu.DrawItem(Sender: TObject; ACanvas: TCanvas; ARect: TRect;
  Selected: Boolean);
begin
  if FActive then
    MenueDrawItem(Sender, ACanvas, ARect, Selected);
end;



function TXPMenu.GetImageExtent(MenuItem: TMenuItem): TPoint;
var
  HasImgLstBitmap: boolean;
  B: TBitmap;
  FTopMenu: boolean;
begin
  FTopMenu := false;
  B := TBitmap.Create;
  B.Width := 0;
  B.Height := 0;
  Result.x := 0;
  Result.Y := 0;
  HasImgLstBitmap := false;

  if FForm.Menu <> nil then
    if MenuItem.GetParentComponent.Name = FForm.Menu.Name then
    begin
      FTopMenu := true;
      if FForm.Menu.Images <> nil then
        if MenuItem.ImageIndex <> -1 then
          HasImgLstBitmap := true;

    end;

  if (MenuItem.Parent.GetParentMenu.Images <> nil)
  {$IFDEF VER5U}
  or (MenuItem.Parent.SubMenuImages <> nil)
  {$ENDIF}
  then
  begin
    if MenuItem.ImageIndex <> -1 then
      HasImgLstBitmap := true
    else
      HasImgLstBitmap := false;
  end;

  if HasImgLstBitmap then
  begin
  {$IFDEF VER5U}
    if MenuItem.Parent.SubMenuImages <> nil then
      MenuItem.Parent.SubMenuImages.GetBitmap(MenuItem.ImageIndex, B)
    else
  {$ENDIF}
      MenuItem.Parent.GetParentMenu.Images.GetBitmap(MenuItem.ImageIndex, B)
  end
  else
    if MenuItem.Bitmap.Width > 0 then
      B.Assign(TBitmap(MenuItem.Bitmap));

  Result.x := B.Width;
  Result.Y := B.Height;

  if not FTopMenu then
    if Result.x < FIconWidth then
      Result.x := FIconWidth;

  B.Free;
end;

procedure TXPMenu.MeasureItem(Sender: TObject; ACanvas: TCanvas;
  var Width, Height: Integer);
var
  s: string;
  W, H: integer;
  P: TPoint;
  IsLine: boolean;
begin
  if FActive then
  begin
    S := TMenuItem(Sender).Caption;
      //------
    if S = '-' then IsLine := true else IsLine := false;
    if IsLine then

      //------
      if IsLine then
        S := '';

    if Trim(ShortCutToText(TMenuItem(Sender).ShortCut)) <> '' then
      S := S + ShortCutToText(TMenuItem(Sender).ShortCut) + 'WWW';



    ACanvas.Font.Assign(FFont);
    W := ACanvas.TextWidth(s);
    if pos('&', s) > 0 then
      W := W - ACanvas.TextWidth('&');

    P := GetImageExtent(TMenuItem(Sender));

    W := W + P.x + 10;

    if Width < W then
      Width := W;

    if IsLine then
      Height := 4
    else
    begin
      H := ACanvas.TextHeight(s) + Round(ACanvas.TextHeight(s) * 0.75);
      if P.y + 4 > H then
        H := P.y + 4;

      if Height < H then
        Height := H;
    end;
  end;

end;

procedure TXPMenu.MenueDrawItem(Sender: TObject; ACanvas: TCanvas; ARect: TRect;
  Selected: Boolean);
var
  txt: string;
  B: TBitmap;
  IconRect, TextRect, CheckedRect: TRect;
  i, X1, X2: integer;
  TextFormat: integer;
  HasImgLstBitmap: boolean;
  FMenuItem: TMenuItem;
  FMenu: TMenu;
  FTopMenu: boolean;
  ISLine: boolean;
  ImgListHandle: HImageList;        {Commctrl.pas}
  ImgIndex: integer;
  hWndM: HWND;
  hDcM: HDC;
begin
  FTopMenu := false;
  FMenuItem := TMenuItem(Sender);

  SetGlobalColor(ACanvas);

  if FMenuItem.Caption = '-' then IsLine := true else IsLine := false;

  FMenu := FMenuItem.Parent.GetParentMenu;

  if FMenu is TMainMenu then
    for i := 0 to FMenuItem.GetParentMenu.Items.Count - 1 do
      if FMenuItem.GetParentMenu.Items[i] = FMenuItem then