bsskinmenus.pas

Delphi开发的图象处理软件

   if Scroll and (ScrollCode = 0) and (ActiveItem = VisibleStartIndex + VisibleCount - 1)
   then ScrollDown(True);
   OldActiveItem := ActiveItem;
   if ActiveItem < 0 then j := 0 else j := ActiveItem + 1;
   if j = ItemList.Count then j := 0;
   for i := j to ItemList.Count - 1 do
     with TbsSkinMenuItem(ItemList.Items[i]) do
     begin
       if MenuItem.Enabled and (MenuItem.Caption <> '-')
       then
         begin
           ActiveItem := i;
           Break;
         end
       else
         begin
           if Scroll and (ScrollCode = 0) and (i = VisibleStartIndex + VisibleCount - 1)
           then ScrollDown(True);
         end;
     end;

   if OldActiveItem <> ActiveItem
   then
     begin
       if ActiveItem > -1 then
       with TbsSkinMenuItem(ItemList.Items[ActiveItem]) do
       begin
         MouseEnter(True);
       end;
       if OldActiveItem > -1 then
       with TbsSkinMenuItem(ItemList.Items[OldActiveItem]) do
        begin
          MouseLeave;
        end;
     end;
 end;

 procedure PriorItem;
 var
   i, j: Integer;
 begin
   if Scroll and (ScrollCode = 0) and (ActiveItem = VisibleStartIndex)
   then ScrollUp(True);
   OldActiveItem := ActiveItem;
   if ActiveItem < 0 then j := ItemList.Count - 1 else j := ActiveItem - 1;
   if (j = -1) then j := ItemList.Count - 1;
   for i := j downto 0 do
     with TbsSkinMenuItem(ItemList.Items[i]) do
     begin
       if MenuItem.Enabled and (MenuItem.Caption <> '-')
       then
         begin
           ActiveItem := i;
           Break;
         end
       else
         begin
           if Scroll and (ScrollCode = 0) and  (i = VisibleStartIndex)
           then ScrollUp(True);
         end;
     end;

   if OldActiveItem <> ActiveItem
   then
     begin
       if ActiveItem > -1 then
       with TbsSkinMenuItem(ItemList.Items[ActiveItem]) do
       begin
         MouseEnter(True);
       end;
       if OldActiveItem > -1 then
       with TbsSkinMenuItem(ItemList.Items[OldActiveItem]) do
        begin
          MouseLeave;
        end;
     end;
 end;

function FindHotKeyItem: Boolean;
var
  i: Integer;
begin
  Result := False;
  for i := 0 to ItemList.Count - 1 do
      with TbsSkinMenuItem(ItemList.Items[i]) do
      begin
        if Enabled and IsAccel(CharCode, MenuItem.Caption)
        then
          begin
            MouseEnter(False);
            OldActiveItem := ActiveItem;
            ActiveItem := i;
            if OldActiveItem <> -1
            then
              TbsSkinMenuItem(ItemList.Items[OldActiveItem]).MouseLeave;
            MouseDown(0, 0);
            Result := True;
            Break;
          end;
      end
end;

begin
  if not Visible then Exit;
  if not FindHotKeyItem
  then 
  case CharCode of
    VK_DOWN:
      NextItem;
    VK_UP:
      PriorItem;
    VK_RIGHT:
      begin
        if ActiveItem <> -1
        then
          with TbsSkinMenuItem(ItemList.Items[ActiveItem]) do
          begin
            if MenuItem.Count <> 0 then MouseDown(0, 0);
          end;
      end;
    VK_RETURN:
      begin
        if ActiveItem <> -1
        then
          with TbsSkinMenuItem(ItemList.Items[ActiveItem]) do
          begin
            MouseDown(0, 0);
          end;
      end;
    VK_LEFT:
      begin
        if ParentMenu.FPopupList.Count > 1
        then
          begin
            ParentMenu.CloseMenu(ParentMenu.FPopupList.Count - 1);
            PW := TbsSkinPopupWindow(ParentMenu.FPopupList.Items[ParentMenu.FPopupList.Count - 1]);
            if PW.ActiveItem <> -1
            then
              TbsSkinMenuItem(PW.ItemList.Items[PW.ActiveItem]).Down := False;
          end
      end;
    VK_ESCAPE:
      begin
        ParentMenu.CloseMenu(ParentMenu.FPopupList.Count - 1);
        if ParentMenu.FPopupList.Count > 0
        then
          begin
            PW := TbsSkinPopupWindow(ParentMenu.FPopupList.Items[ParentMenu.FPopupList.Count - 1]);
            if PW.ActiveItem <> -1
            then
              TbsSkinMenuItem(PW.ItemList.Items[PW.ActiveItem]).Down := False;
          end;   
      end;
  end;
end;

procedure TbsSkinPopupWindow.UpDatePW;
var
  i: Integer;
  j: Integer;
begin
  j := ParentMenu.GetPWIndex(Self);
  if j + 1 < ParentMenu.FPopupList.Count
  then ParentMenu.CloseMenu(j + 1);
  for i := 0 to ItemList.Count - 1 do
    if TbsSkinMenuItem(ItemList.Items[i]).Down
    then
      with TbsSkinMenuItem(ItemList.Items[i]) do
      begin
        Down := False;
        ReDraw;
      end;
end;

procedure TbsSkinPopupWindow.SetMenuWindowRegion;
var
  TempRgn: HRgn;
begin
  if PW = nil then Exit;
  TempRgn := FRgn;
  CreateSkinRegion
    (FRgn, PW.LTPoint, PW.RTPoint, PW.LBPoint, PW.RBPoint, PW.ItemsRect,
     NewLtPoint, NewRTPoint, NewLBPoint, NewRBPoint, NewItemsRect,
     MaskPicture, Width, Height);
  SetWindowRgn(Handle, FRgn, True);
  if TempRgn <> 0 then DeleteObject(TempRgn);
end;

procedure TbsSkinPopupWindow.CreateRealImage;
var
  R: TRect;
  TextOffset: Integer;
begin
  if PW <> nil
  then
    CreateSkinImageBS(PW.LTPoint, PW.RTPoint, PW.LBPoint, PW.RBPoint,
      PW.ItemsRect, NewLTPoint, NewRTPoint, NewLBPoint, NewRBPoint,
      NewItemsRect, B, WindowPicture,
      Rect(0, 0, WindowPicture.Width, WindowPicture.Height),
      Width, Height, Scroll, PW.LeftStretch, PW.TopStretch,
      PW.RightStretch, PW.BottomStretch)
  else
    begin
      B.Width := Width;
      B.Height := Height;
      with B.Canvas do
      begin
        if ImgL = nil
        then TextOffset := 21
        else TextOffset := GlyphWidth + 2;
        R := Rect(0, 0, TextOffset, Height);
        Brush.Color := clBtnFace;
        FillRect(R);
        R := Rect(TextOffset, 0, Width, Height);
        Brush.Color := clWindow;
        FillRect(R);
      end;
      R := Rect(0, 0, Width, Height);
      Frame3D(B.Canvas, R, clBtnShadow, clBtnShadow, 1);
      Frame3D(B.Canvas, R, clWindow, clWindow, 1);
    end;
end;

procedure TbsSkinPopupWindow.CreateMenu2;
var
  sw, sh: Integer;
  i, j: Integer;
  Menu: TMenu;

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

  function GetMenuWindowHeight: Integer;
  var
    i, j, ih: integer;
  begin
    j := 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);
    end;
    if PW <> nil
    then
      Result := j + PW.ItemsRect.Top + (WindowPicture.Height - PW.ItemsRect.Bottom)
    else
      Result := j + 4;
  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;
  W := GetMenuWindowWidth;
  H := GetMenuWindowHeight;
  Scroll := False;
  //
  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;
        CharSet := ParentMenu.FDefaultMenuItemFont.Charset;
      end;
    end
  else
    Canvas.Font.Assign(Self.ParentMenu.FDefaultMenuItemFont);

  Menu := Item.GetParentMenu;
  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: String;
  begin
   if Item.ShortCut <> 0
   then
     MICaption := Item.Caption + '  ' + ShortCutToText(Item.ShortCut)
   else
     MICaption := Item.Caption;
    R := Rect(0, 0, 0, 0);
    DrawText(Canvas.Handle, PChar(MICaption), Length(MICaption), R,
             DT_CALCRECT);
    Result := R.Right + 2;
  end;

  function GetMenuWindowHeight: Integer;
  var
    i, j, ih: integer;
  begin
    j := 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);
    end;
    if PW <> nil
    then
      Result := j + PW.ItemsRect.Top + (WindowPicture.Height - PW.ItemsRect.Bottom)
    else
      Result := j + 4;
  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