unit TFlatSpeedButtonUnit;

interface

{$I DFS.inc}

uses Windows, Messages, Classes, Controls, Forms, Graphics, StdCtrls, ExtCtrls,
  CommCtrl, Buttons, {$IFDEF DFS_DELPHI_4_UP}ImgList, ActnList,{$ENDIF} FlatUtilitys;

type
  TFlatSpeedButton = class(TGraphicControl)
  private
    FOnMouseEnter: TNotifyEvent;
    FOnMouseLeave: TNotifyEvent;
    FTransparent: TTransparentMode;
    FUseAdvColors: Boolean;
    FAdvColorFocused: TAdvColors;
    FAdvColorDown: TAdvColors;
    FAdvColorBorder: TAdvColors;
    TextBounds: TRect;
    GlyphPos: TPoint;
    FNumGlyphs: TNumGlyphs;
    FDownColor: TColor;
    FBorderColor: TColor;
    FColorHighlight: TColor;
    FColorShadow: TColor;
    FFocusedColor: TColor;
    FGroupIndex: Integer;
    FGlyph: TBitmap;
    FDown: Boolean;
    FDragging: Boolean;
    FAllowAllUp: Boolean;
    FLayout: TButtonLayout;
    FSpacing: Integer;
    FMargin: Integer;
    FMouseInControl: Boolean;
    FModalResult: TModalResult;
    procedure SetColors (Index: Integer; Value: TColor);
    procedure SetAdvColors (Index: Integer; Value: TAdvColors);
    procedure SetUseAdvColors (Value: Boolean);
    procedure UpdateExclusive;
    procedure SetGlyph (Value: TBitmap);
    procedure SetNumGlyphs (Value: TNumGlyphs);
    procedure SetDown (Value: Boolean);
    procedure SetAllowAllUp (Value: Boolean);
    procedure SetGroupIndex (Value: Integer);
    procedure SetLayout (Value: TButtonLayout);
    procedure SetSpacing (Value: Integer);
    procedure SetMargin (Value: Integer);
    procedure UpdateTracking;
    procedure WMLButtonDblClk (var Message: TWMLButtonDown); message WM_LBUTTONDBLCLK;
    procedure CMEnabledChanged (var Message: TMessage); message CM_ENABLEDCHANGED;
    procedure CMButtonPressed (var Message: TMessage); message CM_BUTTONPRESSED;
    procedure CMDialogChar (var Message: TCMDialogChar); message CM_DIALOGCHAR;
    procedure CMFontChanged (var Message: TMessage); message CM_FONTCHANGED;
    procedure CMTextChanged (var Message: TMessage); message CM_TEXTCHANGED;
    procedure CMSysColorChange (var Message: TMessage); message CM_SYSCOLORCHANGE;
    procedure CMParentColorChanged (var Message: TWMNoParams); message CM_PARENTCOLORCHANGED;
    procedure SetTransparent (const Value: TTransparentMode);
    procedure RemoveMouseTimer;
    procedure MouseTimerHandler (Sender: TObject);
    procedure CMMouseEnter(var Message: TMessage); message CM_MOUSEENTER;
    procedure CMMouseLeave(var Message: TMessage); message CM_MOUSELEAVE;
  protected
    FState: TButtonState;
    function GetPalette: HPALETTE; override;
    procedure CalcAdvColors;
    procedure Loaded; 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 Paint; override;
   {$IFDEF DFS_DELPHI_4_UP}
    procedure ActionChange(Sender: TObject; CheckDefaults: Boolean); override;
   {$ENDIF}
  public
    constructor Create (AOwner: TComponent); override;
    destructor Destroy; override;
    procedure Click; override;
    procedure MouseEnter;
    procedure MouseLeave;
  published
    property TransparentMode: TTransparentMode read FTransparent write SetTransparent default tmNone;
    property AllowAllUp: Boolean read FAllowAllUp write SetAllowAllUp default False;
    property Color default $00E1EAEB;
    property ColorFocused: TColor index 0 read FFocusedColor write SetColors default $00E1EAEB;
    property ColorDown: TColor index 1 read FDownColor write SetColors default $00C5D6D9;
    property ColorBorder: TColor index 2 read FBorderColor write SetColors default $008396A0;
    property ColorHighLight: TColor index 3 read FColorHighlight write SetColors default clWhite;
    property ColorShadow: TColor index 4 read FColorShadow write SetColors default clBlack;
    property AdvColorFocused: TAdvColors index 0 read FAdvColorFocused write SetAdvColors default 10;
    property AdvColorDown: TAdvColors index 1 read FAdvColorDown write SetAdvColors default 10;
    property AdvColorBorder: TAdvColors index 2 read FAdvColorBorder write SetAdvColors default 50;
    property UseAdvColors: Boolean read FUseAdvColors write SetUseAdvColors default false;
    property GroupIndex: Integer read FGroupIndex write SetGroupIndex default 0;
    property Down: Boolean read FDown write SetDown default False;
    property Caption;
    property Enabled;
    property Font;
    property Glyph: TBitmap read FGlyph write SetGlyph;
    property Layout: TButtonLayout read FLayout write SetLayout default blGlyphTop;
    property Margin: Integer read FMargin write SetMargin default -1;
    property NumGlyphs: TNumGlyphs read FNumGlyphs write SetNumGlyphs default 1;
    property ModalResult: TModalResult read FModalResult write FModalResult default 0;
    property ParentFont;
    property ParentColor;
    property ParentShowHint;
    property PopupMenu;
    property ShowHint;
    property Spacing: Integer read FSpacing write SetSpacing default 4;
    property Visible;
    property OnClick;
    property OnDblClick;
    property OnMouseDown;
    property OnMouseMove;
    property OnMouseUp;
    property OnMouseEnter: TNotifyEvent read FOnMouseEnter write FOnMouseEnter;
    property OnMouseLeave: TNotifyEvent read FOnMouseLeave write FOnMouseLeave;
   {$IFDEF DFS_DELPHI_4_UP}
    property Action;
    property Anchors;
    property BiDiMode;
    property Constraints;
    property DragKind;
    property ParentBiDiMode;
    property OnEndDock;
    property OnStartDock;
   {$ENDIF}
  end;

var
  MouseInControl: TFlatSpeedButton = nil;

implementation

var
  MouseTimer: TTimer = nil;
  ControlCounter: Integer = 0;

constructor TFlatSpeedButton.Create (AOwner: TComponent);
begin
  inherited Create(AOwner);
  if MouseTimer = nil then
  begin
    MouseTimer := TTimer.Create(nil);
    MouseTimer.Enabled := False;
    MouseTimer.Interval := 100; // 10 times a second
  end;
  SetBounds(0, 0, 25, 25);
  ControlStyle := [csCaptureMouse, csDoubleClicks];
  FGlyph := TBitmap.Create;
  FNumGlyphs := 1;
  ParentFont := True;
  ParentColor := True;
  FFocusedColor := $00E1EAEB;
  FDownColor := $00C5D6D9;
  FBorderColor := $008396A0;
  FColorHighlight := clWhite;
  FColorShadow := clBlack;
  FSpacing := 4;
  FMargin := -1;
  FLayout := blGlyphTop;
  FUseAdvColors := false;
  FAdvColorFocused := 10;
  FAdvColorDown := 10;
  FAdvColorBorder := 50;
  FModalResult := mrNone;
  FTransparent := tmNone;
  Inc(ControlCounter);
end;

destructor TFlatSpeedButton.Destroy;
begin
  RemoveMouseTimer;
  FGlyph.Free;
  Dec(ControlCounter);
  if ControlCounter = 0 then
  begin
    MouseTimer.Free;
    MouseTimer := nil;
  end;
  inherited Destroy;
end;

procedure TFlatSpeedButton.Paint;
var
  FTransColor: TColor;
  FImageList: TImageList;
  sourceRect, destRect: TRect;
  tempGlyph: TBitmap;
  Offset: TPoint;
begin
  // get the transparent color
  FTransColor := FGlyph.Canvas.Pixels[0, FGlyph.Height - 1];
  Canvas.Font := Self.Font;

  if FState in [bsDown, bsExclusive] then
    Offset := Point(1, 1)
  else
    Offset := Point(0, 0);

  CalcButtonLayout(Canvas, ClientRect, Offset, FLayout, FSpacing,
    FMargin, FGlyph, FNumGlyphs, Caption, TextBounds, GlyphPos);

  if not Enabled then
  begin
    FState := bsDisabled;
    FDragging := False;
  end
  else
    if FState = bsDisabled then
      if FDown and (GroupIndex <> 0) then
        FState := bsExclusive
      else
        FState := bsUp;

  // DrawBackground
  case FTransparent of
    tmAlways: ;
    tmNone:
      begin
        case FState of
          bsUp:
            if FMouseInControl then
              Canvas.Brush.Color := FFocusedColor
            else
              Canvas.Brush.Color := Self.Color;
          bsDown:
            Canvas.Brush.Color := FDownColor;
          bsExclusive:
            if FMouseInControl then
              Canvas.Brush.Color := FFocusedColor
            else
              Canvas.Brush.Color := FDownColor;
          bsDisabled:
            Canvas.Brush.Color := Self.Color;
        end;
        Canvas.FillRect(ClientRect);
      end;
    tmNotFocused:
      if FMouseInControl then
      begin
        case FState of
          bsUp:
            if FMouseInControl then
              Canvas.Brush.Color := FFocusedColor
            else
              Canvas.Brush.Color := Self.Color;
          bsDown:
            Canvas.Brush.Color := FDownColor;
          bsExclusive:
            if FMouseInControl then
              Canvas.Brush.Color := FFocusedColor
            else
              Canvas.Brush.Color := FDownColor;
          bsDisabled:
            Canvas.Brush.Color := Self.Color;
        end;
        Canvas.FillRect(ClientRect);
      end;
  end;

  // DrawBorder
  case FState of
    bsUp:
      if FMouseInControl then
        Frame3DBorder(canvas, ClientRect, FColorHighlight, FColorShadow, 1)
      else
        Frame3DBorder(canvas, ClientRect, FBorderColor, FBorderColor, 1);
    bsDown, bsExclusive:
      Frame3DBorder(canvas, ClientRect, FColorShadow, FColorHighlight, 1);
    bsDisabled:
      Frame3DBorder(canvas, ClientRect, FBorderColor, FBorderColor, 1);
  end;

  // DrawGlyph
  if not FGlyph.Empty then
  begin
    tempGlyph := TBitmap.Create;
    case FNumGlyphs of
      1: case FState of
           bsUp:        sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
           bsDisabled:  sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
           bsDown:      sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
           bsExclusive: sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
         end;
      2: case FState of
           bsUp:        sourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
           bsDisabled:  sourceRect := Rect(FGlyph.Width div FNumGlyphs, 0, FGlyph.Width, FGlyph.Height);
           bsDown:      sourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
           bsExclusive: sourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
         end;
      3: case FState of
           bsUp:        SourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
           bsDisabled:  SourceRect := Rect(FGlyph.width div FNumGlyphs, 0, (FGlyph.Width div FNumGlyphs) * 2, FGlyph.Height);
           bsDown:      SourceRect := Rect((FGlyph.Width div FNumGlyphs) * 2, 0, FGlyph.Width, FGlyph.Height);
           bsExclusive: SourceRect := Rect((FGlyph.Width div FNumGlyphs) * 2, 0, FGlyph.Width, FGlyph.Height);
         end;
      4: case FState of
           bsUp:        SourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
           bsDisabled:  SourceRect := Rect(FGlyph.width div FNumGlyphs, 0, (FGlyph.Width div FNumGlyphs) * 2, FGlyph.Height);
           bsDown:      SourceRect := Rect((FGlyph.Width div FNumGlyphs) * 2, 0, (FGlyph.Width div FNumGlyphs) * 3, FGlyph.Height);
           bsExclusive: SourceRect := Rect((FGlyph.width div FNumGlyphs) * 3, 0, FGlyph.Width, FGlyph.Height);
         end;
    end;

    destRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
    tempGlyph.Width := FGlyph.Width div FNumGlyphs;
    tempGlyph.Height := FGlyph.Height;
    tempGlyph.canvas.copyRect(destRect, FGlyph.canvas, sourcerect);

    if (FNumGlyphs = 1) and (FState = bsDisabled) then
    begin
      tempGlyph := CreateDisabledBitmap(tempGlyph, clBlack, clBtnFace, clBtnHighlight, clBtnShadow, True);
      FTransColor := tempGlyph.Canvas.Pixels[0, tempGlyph.Height - 1];
    end;

    FImageList := TImageList.CreateSize(FGlyph.Width div FNumGlyphs, FGlyph.Height);
    try
      FImageList.AddMasked(tempGlyph, FTransColor);
      FImageList.Draw(canvas, glyphpos.x, glyphpos.y, 0);
    finally
      FImageList.Free;
    end;
    tempGlyph.free;
  end;

  // DrawText
  Canvas.Brush.Style := bsClear;
  if FState = bsDisabled then
  begin
    OffsetRect(TextBounds, 1, 1);
    Canvas.Font.Color := clBtnHighlight;
    DrawText(Canvas.Handle, PChar(Caption), Length(Caption), TextBounds, DT_CENTER or DT_VCENTER or DT_SINGLELINE);
    OffsetRect(TextBounds, -1, -1);
    Canvas.Font.Color := clBtnShadow;
    DrawText(Canvas.Handle, PChar(Caption), Length(Caption), TextBounds, DT_CENTER or DT_VCENTER or DT_SINGLELINE);
  end
  else
    DrawText(Canvas.Handle, PChar(Caption), Length(Caption), TextBounds, DT_CENTER or DT_VCENTER or DT_SINGLELINE);
end;

procedure TFlatSpeedButton.UpdateTracking;
var
  P: TPoint;
begin
  if Enabled then
  begin
    GetCursorPos(P);
    FMouseInControl := not (FindDragTarget(P, True) = Self);
    if FMouseInControl then
      MouseLeave
    else
      MouseEnter;
  end;
end;

procedure TFlatSpeedButton.Loaded;
begin
  inherited Loaded;
  Invalidate;
end;

procedure TFlatSpeedButton.MouseDown (Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
  inherited MouseDown(Button, Shift, X, Y);
  if (Button = mbLeft) and Enabled then
  begin
    if not FDown then
    begin
      FState := bsDown;
      Invalidate;
    end;
    FDragging := True;
  end;
end;

procedure TFlatSpeedButton.MouseMove (Shift: TShiftState; X, Y: Integer);
var
  NewState: TButtonState;
  P: TPoint;
begin
  inherited;

  // mouse is in control ?
  P := ClientToScreen(Point(X, Y));
  if (MouseInControl <> Self) and (FindDragTarget(P, True) = Self) then
  begin
    if Assigned(MouseInControl) then
      MouseInControl.MouseLeave;
    // the application is active ?
    if (GetActiveWindow <> 0) then