xpmenu.pas

《Delphi7编程100例》代码,书配资料

    end;


    if (Hot) and (not FTopMenu) and (Enabled) and (not Checked) then
      if not Selected then
      begin
        dec(X1, 1);
        dec(X2, 1);
      end;

    if (not Hot) and (Enabled) and (not Checked) then
      if Is16Bit then
        DimBitmap(B, 30);

    if (not Hot) and (not Enabled) then
      GrayBitmap(B, 60);

    if (Hot) and (not Enabled) then
      GrayBitmap(B, 70);



    if (Hot) and (Enabled) and (not Checked) then
    begin
      if (Is16Bit) and (not UseSystemColors) and (Sender is TToolButton) then
        DefColor := NewColor(ACanvas, FSelectColor, 68)
      else
        DefColor := FFSelectColor;

      DefColor := GetShadeColor(ACanvas, DefColor, 50);
      DrawBitmapShadow(B, ACanvas, X1 + 2, X2 + 2, DefColor);
    end;

    B.Transparent := true;
    ACanvas.Draw(X1, X2, B);


  end;

end;

procedure TXPMenu.DrawArrow(ACanvas: TCanvas; X, Y: integer);
begin
  ACanvas.MoveTo(X, Y);
  ACanvas.LineTo(X + 4, Y);

  ACanvas.MoveTo(X + 1, Y + 1);
  ACanvas.LineTo(X + 4, Y);

  ACanvas.MoveTo(X + 2, Y + 2);
  ACanvas.LineTo(X + 3, Y);

end;

function TXPMenu.TopMenuFontColor(ACanvas: TCanvas; Color: TColor): TColor;
var
  r, g, b, avg: integer;
begin

  Color := ColorToRGB(Color);
  r := Color and $000000FF;
  g := (Color and $0000FF00) shr 8;
  b := (Color and $00FF0000) shr 16;

  Avg := (r + b) div 2;

  if (Avg > 150) or (g > 200) then
    Result := FFont.Color
  else
    Result := NewColor(ACanvas, Color, 90);
   // Result := FColor;
end;


procedure TXPMenu.SetActive(const Value: boolean);
begin

  FActive := Value;

  if FActive then
  begin
    InitMenueItems(false);
    InitMenueItems(true);
  end
  else
    InitMenueItems(false);

  Windows.DrawMenuBar(FForm.Handle);
end;

procedure TXPMenu.SetAutoDetect(const Value: boolean);
begin
  FAutoDetect := Value;
end;

procedure TXPMenu.SetForm(const Value: TForm);
var
  Hold: boolean;
begin
  if Value <> FForm then
  begin
    Hold := Active;
    Active := false;
    FForm := Value;
    if Hold then
      Active := True;
  end;
end;

procedure TXPMenu.SetFont(const Value: TFont);
begin
  FFont.Assign(Value);
  Windows.DrawMenuBar(FForm.Handle);

end;

procedure TXPMenu.SetColor(const Value: TColor);
begin
  FColor := Value;
end;

procedure TXPMenu.SetIconBackColor(const Value: TColor);
begin
  FIconBackColor := Value;
end;

procedure TXPMenu.SetMenuBarColor(const Value: TColor);
begin
  FMenuBarColor := Value;
  Windows.DrawMenuBar(FForm.Handle);
end;

procedure TXPMenu.SetCheckedColor(const Value: TColor);
begin
  FCheckedColor := Value;
end;

procedure TXPMenu.SetSeparatorColor(const Value: TColor);
begin
  FSeparatorColor := Value;
end;

procedure TXPMenu.SetSelectBorderColor(const Value: TColor);
begin
  FSelectBorderColor := Value;
end;

procedure TXPMenu.SetSelectColor(const Value: TColor);
begin
  FSelectColor := Value;
end;

procedure TXPMenu.SetDisabledColor(const Value: TColor);
begin
  FDisabledColor := Value;
end;

procedure TXPMenu.SetSelectFontColor(const Value: TColor);
begin
  FSelectFontColor := Value;
end;

procedure TXPMenu.SetIconWidth(const Value: integer);
begin
  FIconWidth := Value;
end;

procedure TXPMenu.SetDrawSelect(const Value: boolean);
begin
  FDrawSelect := Value;
end;



procedure TXPMenu.SetOverrideOwnerDraw(const Value: boolean);
begin
  FOverrideOwnerDraw := Value;
  if FActive then
    Active := True;
end;


procedure TXPMenu.SetUseSystemColors(const Value: boolean);
begin
  FUseSystemColors := Value;
  Windows.DrawMenuBar(FForm.Handle);
end;

procedure TXPMenu.SetGradient(const Value: boolean);
begin
  FGradient := Value;
end;

procedure TXPMenu.SetFlatMenu(const Value: boolean);
begin
  FFlatMenu := Value;
end;


procedure GetSystemMenuFont(Font: TFont);
var
  FNonCLientMetrics: TNonCLientMetrics;
begin
  FNonCLientMetrics.cbSize := Sizeof(TNonCLientMetrics);
  if SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, @FNonCLientMetrics,0) then
  begin
    Font.Handle := CreateFontIndirect(FNonCLientMetrics.lfMenuFont);
    Font.Color := clMenuText;
    if Font.Name = 'MS Sans Serif' then
      Font.Name := 'Tahoma';
  end;
end;


procedure TXPMenu.DrawGradient(ACanvas: TCanvas; ARect: TRect;
 IsRightToLeft: boolean);
var
  i: integer;
  v: integer;
  FRect: TRect;
begin

  fRect := ARect;
  V := 0;
  if IsRightToLeft then
  begin
    fRect.Left := fRect.Right - 1;
    for i := ARect.Right Downto ARect.Left do
    begin
      if (fRect.Left < ARect.Right)
        and (fRect.Left > ARect.Right - FIconWidth + 5) then
        inc(v, 3)
      else
        inc(v, 1);

      if v > 96 then v := 96;
      ACanvas.Brush.Color := NewColor(ACanvas, FFIconBackColor, v);
      ACanvas.FillRect(fRect);

      fRect.Left := fRect.Left - 1;
      fRect.Right := fRect.Left - 1;
    end;
  end
  else
  begin
    fRect.Right := fRect.Left + 1;
    for i := ARect.Left to ARect.Right do
    begin
      if (fRect.Left > ARect.Left)
        and (fRect.Left < ARect.Left + FIconWidth + 5) then
        inc(v, 3)
      else
        inc(v, 1);

      if v > 96 then v := 96;
      ACanvas.Brush.Color := NewColor(ACanvas, FFIconBackColor, v);
      ACanvas.FillRect(fRect);

      fRect.Left := fRect.Left + 1;
      fRect.Right := fRect.Left + 1;
    end;
  end;
end;


procedure TXPMenu.DrawWindowBorder(hWnd: HWND; IsRightToLeft: boolean);
var
  WRect, CRect: TRect;
  dCanvas: TCanvas;
begin

  if hWnd <= 0 then
  begin
   exit;
  end;
  dCanvas := nil;
  try
  dCanvas := TCanvas.Create;
  dCanvas.Handle := GetDc(0);

  GetClientRect(hWnd, CRect);
  GetWindowRect(hWnd, WRect);

  ExcludeClipRect(dCanvas.Handle, CRect.Left, CRect.Top, CRect.Right,
                  CRect.Bottom);

  dCanvas.Brush.Style := bsClear;


  Dec(WRect.Right, 2);
  Dec(WRect.Bottom, 2);

  dCanvas.Pen.Color := FMenuBorderColor;
  dCanvas.Rectangle(WRect.Left, WRect.Top, WRect.Right, WRect.Bottom);




  if IsRightToLeft then
  begin
    dCanvas.Pen.Color := FFColor;
    dCanvas.Rectangle(WRect.Left + 1, WRect.Top + 1, WRect.Right - 2,
                      WRect.Top + 3);

    dCanvas.MoveTo(WRect.Left + 2, WRect.Top + 2);
    dCanvas.LineTo(WRect.Left + 2, WRect.Bottom - 2);


    dCanvas.Pen.Color := FFIconBackColor;
    dCanvas.MoveTo(WRect.Right - 2, WRect.Top + 2);
    dCanvas.LineTo(WRect.Right - 2, WRect.Bottom - 2);

    dCanvas.MoveTo(WRect.Right - 2, WRect.Top + 2);
    dCanvas.LineTo(WRect.Right - 1 - FIconWidth, WRect.Top + 2);
  end
  else
  begin
    if not FGradient then
    begin
      dCanvas.Pen.Color := FFColor;
      dCanvas.Rectangle(WRect.Left + 1, WRect.Top + 1, WRect.Right - 2,
                        WRect.Top + 3);

      dCanvas.Pen.Color := FFIconBackColor;
      dCanvas.MoveTo(WRect.Left + 1, WRect.Top + 2);
      dCanvas.LineTo(WRect.Left + 2 + FIconWidth, WRect.Top + 2);
    end;

    dCanvas.Pen.Color := FFIconBackColor;
    dCanvas.MoveTo(WRect.Left + 1, WRect.Top + 1);
    dCanvas.LineTo(WRect.Left + 1, WRect.Bottom - 2);


  end;

  Inc(WRect.Right, 2);
  Inc(WRect.Bottom, 2);

  dCanvas.Pen.Color := FMenuShadowColor;
  dCanvas.Rectangle(WRect.Left +2, WRect.Bottom, WRect.Right, WRect.Bottom - 2);
  dCanvas.Rectangle(WRect.Right - 2, WRect.Bottom, WRect.Right, WRect.Top + 2);


  dCanvas.Pen.Color := FFIconBackColor;
  dCanvas.Rectangle(WRect.Left, WRect.Bottom - 2, WRect.Left + 2, WRect.Bottom);
  dCanvas.Rectangle(WRect.Right - 2, WRect.Top, WRect.Right, WRect.Top + 2);
  finally
  IntersectClipRect(dCanvas.Handle, WRect.Left, WRect.Top, WRect.Right, WRect.Bottom);
  dCanvas.Free;
  end;


end;



procedure TXPMenu.Notification(AComponent: TComponent;
  Operation: TOperation);
begin
  inherited Notification(AComponent, Operation);
  if not FAutoDetect then exit;
  if (Operation = opInsert) and
     ((AComponent is TMenuItem) or (AComponent is TToolButton)) then
  begin
   if (csDesigning in ComponentState) then
     Active := true
   else
     //if ComponentState = [] then
        Active := true ;
  end;


end;


function GetShadeColor(ACanvas: TCanvas; clr: TColor; Value: integer): TColor;
var
  r, g, b: integer;

begin
  clr := ColorToRGB(clr);
  r := Clr and $000000FF;
  g := (Clr and $0000FF00) shr 8;
  b := (Clr and $00FF0000) shr 16;

  r := (r - value);
  if r < 0 then r := 0;
  if r > 255 then r := 255;

  g := (g - value) + 2;
  if g < 0 then g := 0;
  if g > 255 then g := 255;

  b := (b - value);
  if b < 0 then b := 0;
  if b > 255 then b := 255;

  Result := Windows.GetNearestColor(ACanvas.Handle, RGB(r, g, b));
end;

function NewColor(ACanvas: TCanvas; clr: TColor; Value: integer): TColor;
var
  r, g, b: integer;

begin
  if Value > 100 then Value := 100;
  clr := ColorToRGB(clr);
  r := Clr and $000000FF;
  g := (Clr and $0000FF00) shr 8;
  b := (Clr and $00FF0000) shr 16;


  r := r + Round((255 - r) * (value / 100));
  g := g + Round((255 - g) * (value / 100));
  b := b + Round((255 - b) * (value / 100));

  Result := Windows.GetNearestColor(ACanvas.Handle, RGB(r, g, b));

end;

function GrayColor(ACanvas: TCanvas; clr: TColor; Value: integer): TColor;
var
  r, g, b, avg: integer;

begin
  if Value > 100 then Value := 100;
  clr := ColorToRGB(clr);
  r := Clr and $000000FF;
  g := (Clr and $0000FF00) shr 8;
  b := (Clr and $00FF0000) shr 16;

  Avg := (r + g + b) div 3;
  Avg := Avg + Value;
 
  if Avg > 240 then Avg := 240;

  Result := Windows.GetNearestColor (ACanvas.Handle,RGB(Avg, avg, avg));
end;

procedure GrayBitmap(ABitmap: TBitmap; Value: integer);
var
  x, y: integer;
  LastColor1, LastColor2, Color: TColor;
begin
  LastColor1 := 0;
  LastColor2 := 0;

  for y := 0 to ABitmap.Height do
    for x := 0 to ABitmap.Width do
    begin
      Color := ABitmap.Canvas.Pixels[x, y];
      if Color = LastColor1 then
        ABitmap.Canvas.Pixels[x, y] := LastColor2
      else
      begin
        LastColor2 := GrayColor(ABitmap.Canvas , Color, Value);
        ABitmap.Canvas.Pixels[x, y] := LastColor2;
        LastColor1 := Color;
      end;
    end;
end;

procedure DimBitmap(ABitmap: TBitmap; Value: integer);
var
  x, y: integer;
  LastColor1, LastColor2, Color: TColor;
begin
  if Value > 100 then Value := 100;
  LastColor1 := -1;
  LastColor2 := -1;

  for y := 0 to ABitmap.Height - 1 do
    for x := 0 to ABitmap.Width - 1 do
    begin
      Color := ABitmap.Canvas.Pixels[x, y];
      if Color = LastColor1 then
        ABitmap.Canvas.Pixels[x, y] := LastColor2
      else
      begin
        LastColor2 := NewColor(ABitmap.Canvas, Color, Value);
        ABitmap.Canvas.Pixels[x, y] := LastColor2;
        LastColor1 := Color;
      end;
    end;
end;

procedure DrawBitmapShadow(B: TBitmap; ACanvas: TCanvas; X, Y: integer;
  ShadowColor: TColor);
var
  BX, BY: integer;
  TransparentColor: TColor;
begin
  TransparentColor := B.Canvas.Pixels[0, B.Height - 1];
  for BY := 0 to B.Height - 1 do
    for BX := 0 to B.Width - 1 do
    begin
      if B.Canvas.Pixels[BX, BY] <> TransparentColor then
        ACanvas.Pixels[X + BX, Y + BY] := ShadowColor;

    end;
end;


end.