bsskinmenus.pas

一套非常好用的delphi控件,方便程序员工作

          then ih := RectHeight(DSMI.DividerRect)
          else ih := RectHeight(DSMI.SkinRect);
        end
      else
        begin
          if MenuItem.Caption = '-'
          then ih := 4
          else ih := ParentMenu.DefaultMenuItemHeight;
        end;
      inc(j, ih);
      inc(k);
    end;

    if (ParentMenu.MaxMenuItemsInWindow <> 0) and (ParentMenu.MaxMenuItemsInWindow < k)
    then
      begin
        if PW <> nil
        then
          ih := RectHeight(DSMI.SkinRect)
        else
          ih := ParentMenu.DefaultMenuItemHeight;
        j := ParentMenu.MaxMenuItemsInWindow * ih;
        if PW <> nil
        then
          Result := j + PW.ItemsRect.Top + (WindowPicture.Height - PW.ItemsRect.Bottom)
        else
          Result := j + 6;
        Result := Result + MarkerItemHeight * 2;
      end
    else
      begin
        if PW <> nil
        then
          Result := j + PW.ItemsRect.Top + (WindowPicture.Height - PW.ItemsRect.Bottom)
        else
          Result := j + 6;
      end;    
  end;

  function GetMenuWindowWidth: Integer;
  var
    i, iw: Integer;
  begin
    iw := 0;
    for i := 0 to ItemList.Count - 1 do
    begin
      j := CalcItemTextWidth(TbsSkinMenuItem(ItemList.Items[i]).MenuItem);
      if j > iw then iw := j;
    end;
    inc(iw, 19);
    if ImgL <> nil
    then
      GlyphWidth := ImgL.Width + 5
    else
      GlyphWidth := 19;
    Inc(iw, GlyphWidth);
    if PW <> nil
    then
      begin
        Inc(iw, DSMI.TextRct.Left);
        Inc(iw, RectWidth(DSMI.SkinRect) - DSMI.TextRct.Right);
        Result := iw + PW.ItemsRect.Left + (WindowPicture.Width - PW.ItemsRect.Right);
      end
    else
      Result := iw + 10;
  end;


procedure CalcSizes;
var
  W, H: Integer;
begin
  //
  VisibleStartIndex := 0;
  VisibleCount := ItemList.Count;
  Scroll := False;
  Scroll2 := False;
  W := GetMenuWindowWidth;
  H := GetMenuWindowHeight;
  //
  if H > RectHeight(ParentMenu.WorkArea)
  then
    begin
      H := RectHeight(ParentMenu.WorkArea);
      Scroll := True;
    end;  
  //
  Width := W;
  Height := H;
end;

function GetMenuItemData: TbsDataSkinMenuItem;
var
  i: Integer;
begin
  Result := nil;
  if (SD <> nil) and not SD.Empty
  then 
    for i := 0 to SD.ObjectList.Count - 1 do
    if TbsDataSkinObject(SD.ObjectList.Items[i]) is TbsDataSkinMenuItem
    then
      begin
        Result := TbsDataSkinMenuItem(SD.ObjectList.Items[i]);
        Break;
      end;
end;

var
  TmpStartIndex: Integer;
begin
  DSMI := GetMenuItemData;
  if (PW <> nil) and (DSMI <> nil) and ParentMenu.UseSkinFont
  then
    begin
      with Canvas.Font do
      begin
        Height := DSMI.FontHeight;
        Style := DSMI.FontStyle;
        Name := DSMI.FontName;
      end;
    end
  else
    Canvas.Font.Assign(Self.ParentMenu.FDefaultMenuItemFont);

  if (ParentMenu.SkinData <> nil) and
     (ParentMenu.SkinData.ResourceStrData <> nil)
  then
    Canvas.Font.CharSet := ParentMenu.SkinData.ResourceStrData.Charset
  else
    Canvas.Font.CharSet := ParentMenu.FDefaultMenuItemFont.Charset;

  Menu := Item.GetParentMenu;

  if (Menu <> nil) and (Menu.AutoLineReduction = maAutomatic)
  then
    Item.RethinkLines;

  if Menu <> nil
  then
    ImgL := Menu.Images
  else
    ImgL := nil;

  j := Item.Count;
  if StartIndex < j then
  for i := StartIndex to  j - 1 do
   if TMenuItem(Item.Items[i]).Visible
   then
     begin
       if TMenuItem(Item.Items[i]).Action <> nil
       then
         TMenuItem(Item.Items[i]).Action.Update;
       ItemList.Add(TbsSkinMenuItem.Create(Self, TMenuItem(Item.Items[i]), DSMI));
     end;

  TmpStartIndex := StartIndex - Item.Count;
  if TmpStartIndex < 0 then TmpStartIndex := 0;
  j := Item2.Count;
  if TmpStartIndex < j then
  for i := TmpStartIndex to  j - 1 do
   if TMenuItem(Item2.Items[i]).Visible
   then
     begin
       if TMenuItem(Item2.Items[i]).Action <> nil
       then
         TMenuItem(Item2.Items[i]).Action.Update;
       ItemList.Add(TbsSkinMenuItem.Create(Self, TMenuItem(Item2.Items[i]), DSMI));
     end;
  //

  CalcSizes;

  if PW <> nil
  then
    begin
      sw := WindowPicture.Width;
      sh := WindowPicture.Height;
      NewLTPoint := PW.LTPoint;
      NewRTPoint := Point(Width - (sw - PW.RTPoint.X), PW.RTPoint.Y);
      NewLBPoint := Point(PW.LBPoint.X, Height - (sh - PW.LBPoint.Y));
      NewRBPoint := Point(Width - (sw - PW.RBPoint.X),
                          Height - (sh - PW.RBPoint.Y));

      NewItemsRect := Rect(PW.ItemsRect.Left, PW.ItemsRect.Top,
                           Width - (sw - PW.ItemsRect.Right),
                           Height - (sh - PW.ItemsRect.Bottom));

    end
  else
    NewItemsRect := Rect(2, 2, Width - 2, Height - 2);
  CalcItemRects;
  if MaskPicture <> nil then SetMenuWindowRegion;

end;

procedure TbsSkinPopupWindow.CreateMenu;
var
  sw, sh: Integer;
  i, j: Integer;
  Menu: TMenu;

  function CalcItemTextWidth(Item: TMenuItem): Integer;
  var
    R: TRect;
    MICaption: WideString;
  begin
   if Item.ShortCut <> 0
   then
     MICaption := Item.Caption + '  ' + ShortCutToText(Item.ShortCut)
   else
     MICaption := Item.Caption;
    R := Rect(0, 0, 0, 0);
    BSDrawSkinText(Canvas, MICaption, R, DT_CALCRECT);
    Result := R.Right + 2;
  end;

  function GetMenuWindowHeight: Integer;
  var
    i, j, k, ih: integer;
  begin
    j := 0;
    k := 0;
    for i := VisibleStartIndex to VisibleCount - 1 do
    with TbsSkinMenuItem(ItemList.Items[i]) do
     begin
      if PW <> nil
      then
        begin
          if MenuItem.Caption = '-'
          then ih := RectHeight(DSMI.DividerRect)
          else ih := RectHeight(DSMI.SkinRect);
        end
      else
        begin
          if MenuItem.Caption = '-'
          then ih := 4
          else ih := ParentMenu.DefaultMenuItemHeight;
        end;
      inc(j, ih);
      inc(k);
    end;

    if (ParentMenu.MaxMenuItemsInWindow <> 0) and (ParentMenu.MaxMenuItemsInWindow < k)
    then
      begin
        if PW <> nil
        then
          ih := RectHeight(DSMI.SkinRect)
        else
          ih := ParentMenu.DefaultMenuItemHeight;
        j := ParentMenu.MaxMenuItemsInWindow * ih;
        if PW <> nil
        then
          Result := j + PW.ItemsRect.Top + (WindowPicture.Height - PW.ItemsRect.Bottom)
        else
          Result := j + 4;
        Result := Result + MarkerItemHeight * 2;
        Self.Scroll := True;
        Self.Scroll2 := True;
      end
    else
      begin
        if PW <> nil
        then
          Result := j + PW.ItemsRect.Top + (WindowPicture.Height - PW.ItemsRect.Bottom)
        else
          Result := j + 4;
      end;    
  end;

  function GetMenuWindowWidth: Integer;
  var
    i, iw: Integer;
  begin
    iw := 0;
    for i := 0 to ItemList.Count - 1 do
    begin
      j := CalcItemTextWidth(TbsSkinMenuItem(ItemList.Items[i]).MenuItem);
      if j > iw then iw := j;
    end;
    inc(iw, 19);
    if ImgL <> nil
    then
      GlyphWidth := ImgL.Width + 5
    else
      GlyphWidth := 19;
    Inc(iw, GlyphWidth);
    if PW <> nil
    then
      begin
        Inc(iw, DSMI.TextRct.Left);
        Inc(iw, RectWidth(DSMI.SkinRect) - DSMI.TextRct.Right);
        Result := iw + PW.ItemsRect.Left + (WindowPicture.Width - PW.ItemsRect.Right);
      end
    else
      Result := iw + 10;
  end;


procedure CalcSizes;
var
  W, H: Integer;
begin
  //
  VisibleStartIndex := 0;
  VisibleCount := ItemList.Count;
  Scroll := False;
  Scroll2 := False;
  W := GetMenuWindowWidth;
  H := GetMenuWindowHeight;
  //
  if H > RectHeight(ParentMenu.WorkArea)
  then
    begin
      H := RectHeight(ParentMenu.WorkArea);
      Scroll := True;
    end;  
  //
  Width := W;
  Height := H;
end;

function GetMenuItemData: TbsDataSkinMenuItem;
var
  i: Integer;
begin
  Result := nil;
  if (SD <> nil) and not SD.Empty
  then
    for i := 0 to SD.ObjectList.Count - 1 do
    if TbsDataSkinObject(SD.ObjectList.Items[i]) is TbsDataSkinMenuItem
    then
      begin
        Result := TbsDataSkinMenuItem(SD.ObjectList.Items[i]);
        Break;
      end;
end;

begin
  DSMI := GetMenuItemData;
  if (PW <> nil) and (DSMI <> nil) and ParentMenu.UseSkinFont
  then
    begin
      with Canvas.Font do
      begin
        Height := DSMI.FontHeight;
        Style := DSMI.FontStyle;
        Name := DSMI.FontName;
      end;
    end
  else
    Canvas.Font.Assign(Self.ParentMenu.FDefaultMenuItemFont);

  if (ParentMenu.SkinData <> nil) and
     (ParentMenu.SkinData.ResourceStrData <> nil)
  then
    Canvas.Font.CharSet := ParentMenu.SkinData.ResourceStrData.Charset
  else
    Canvas.Font.CharSet := ParentMenu.FDefaultMenuItemFont.Charset;

  Menu := Item.GetParentMenu;

  if (Menu <> nil) and (Menu.AutoLineReduction = maAutomatic)
  then
    Item.RethinkLines;

  if Menu <> nil
  then
    ImgL := Menu.Images
  else
    ImgL := nil;
  j := Item.Count;
  for i := StartIndex to  j - 1 do
   if TMenuItem(Item.Items[i]).Visible
   then
     begin
       if TMenuItem(Item.Items[i]).Action <> nil
       then
         TMenuItem(Item.Items[i]).Action.Update;
       ItemList.Add(TbsSkinMenuItem.Create(Self, TMenuItem(Item.Items[i]), DSMI));
     end;
  //

  CalcSizes;

  if PW <> nil
  then
    begin
      sw := WindowPicture.Width;
      sh := WindowPicture.Height;
      NewLTPoint := PW.LTPoint;
      NewRTPoint := Point(Width - (sw - PW.RTPoint.X), PW.RTPoint.Y);
      NewLBPoint := Point(PW.LBPoint.X, Height - (sh - PW.LBPoint.Y));
      NewRBPoint := Point(Width - (sw - PW.RBPoint.X),
                          Height - (sh - PW.RBPoint.Y));

      NewItemsRect := Rect(PW.ItemsRect.Left, PW.ItemsRect.Top,
                           Width - (sw - PW.ItemsRect.Right),
                           Height - (sh - PW.ItemsRect.Bottom));

    end
  else
    NewItemsRect := Rect(2, 2, Width - 2, Height - 2);
  CalcItemRects;
  if MaskPicture <> nil then SetMenuWindowRegion;
end;

function TbsSkinPopupWindow.GetEndStartVisibleIndex: Integer;
var
  i, j, k, ih, H: Integer;
begin
  j := NewItemsRect.Bottom - MarkerItemHeight;
  H := MarkerItemHeight;
  k := 0;
  for i := ItemList.Count - 1 downto 0 do
  begin
    with TbsSkinMenuItem(ItemList.Items[i]) do
     begin
       if DSMI <> nil
       then
         begin
           if MenuItem.Caption = '-'
           then ih := RectHeight(DSMI.DividerRect)
           else ih := RectHeight(DSMI.SkinRect);
         end
       else
         begin
           if MenuItem.Caption = '-'
           then ih := 4
           else ih := ParentMenu.DefaultMenuItemHeight;
         end;
       j := j - ih;
       if j >= H
       then
         inc(k)
       else
         Break;
     end;
  end;
  Result := ItemList.Count - k;
end;

procedure TbsSkinPopupWindow.CalcItemRects;
var
  i, j, ih, H: Integer;
begin
  j := NewItemsRect.Top;
  H := NewItemsRect.Bottom;
  if Scroll
  then
    begin
      H := H - MarkerItemHeight;
      j := j + MarkerItemHeight;
    end;
  VisibleCount := 0;
  for i := VisibleStartIndex to ItemList.Count - 1 do
    with TbsSkinMenuItem(ItemList.Items[i]) do
     begin
      if DSMI <> nil
      then
        begin
          if MenuItem.Caption = '-'
          then ih := RectHeight(DSMI.DividerRect)
          else ih := RectHeight(DSMI.SkinRect)
        end
      else
        begin
          if MenuItem.Caption = '-'
          then ih := 4
          else ih := ParentMenu.DefaultMenuItemHeight;
        end;
      ObjectRect.Left := NewItemsRect.Left;
      ObjectRect.Right := NewItemsRect.Right;
      ObjectRect.Top := j;
      ObjectRect.Bottom :=  j + ih;
      if ObjectRect.Bottom <= H
      then
        begin
          FVisible := True;