skinmenus.pas

P2P即时通讯源码(DELPHI编写)

    end;
  DrawArrowImage(Cnvs, R, C, 4);
end;

procedure TspSkinPopupWindow.StartScroll;
var
  i: Integer;
begin
  i := ParentMenu.GetPWIndex(Self);
  WT.Enabled := False;
  ParentMenu.CloseMenu(i + 1);
  KillTimer(Handle, 1);
  SetTimer(Handle, 1, ScrollTimerInterval, nil);
end;

procedure TspSkinPopupWindow.StopScroll;
begin
  ScrollCode := 0;
  DrawUpMarker(Canvas);
  DrawDownMarker(Canvas);
  KillTimer(Handle, 1);
end;

procedure TspSkinPopupWindow.ScrollUp;
begin
  if VisibleStartIndex > 0
  then
    begin
      VisibleStartIndex := VisibleStartIndex - 1;
      CalcItemRects;
      RePaint;
    end
  else
    if Cycle
    then
      begin
        VisibleStartIndex := GetEndStartVisibleIndex;
        CalcItemRects;
        RePaint;
      end;
end;

procedure TspSkinPopupWindow.ScrollDown(Cycle: Boolean);
begin
  if VisibleStartIndex + VisibleCount - 1 < ItemList.Count - 1
  then
    begin
      VisibleStartIndex := VisibleStartIndex + 1;
      CalcItemRects;
      RePaint;
    end
  else
    if Cycle
    then
      begin
        VisibleStartIndex := 0;
        CalcItemRects;
        RePaint;
      end;
end;

procedure TspSkinPopupWindow.PopupKeyDown(CharCode: Integer);
var
  PW: TspSkinPopupWindow;

 procedure NextItem;
 var
   i, j: Integer;
 begin
   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 TspSkinMenuItem(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 TspSkinMenuItem(ItemList.Items[ActiveItem]) do
       begin
         MouseEnter(True);
       end;
       if OldActiveItem > -1 then
       with TspSkinMenuItem(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 TspSkinMenuItem(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 TspSkinMenuItem(ItemList.Items[ActiveItem]) do
       begin
         MouseEnter(True);
       end;
       if OldActiveItem > -1 then
       with TspSkinMenuItem(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 TspSkinMenuItem(ItemList.Items[i]) do
      begin
        if Enabled and IsAccel(CharCode, MenuItem.Caption)
        then
          begin
            MouseEnter(False);
            OldActiveItem := ActiveItem;
            ActiveItem := i;
            if OldActiveItem <> -1
            then
              TspSkinMenuItem(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 TspSkinMenuItem(ItemList.Items[ActiveItem]) do
          begin
            if MenuItem.Count <> 0 then MouseDown(0, 0);
          end;
      end;
    VK_RETURN:
      begin
        if ActiveItem <> -1
        then
          with TspSkinMenuItem(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 := TspSkinPopupWindow(ParentMenu.FPopupList.Items[ParentMenu.FPopupList.Count - 1]);
            if PW.ActiveItem <> -1
            then
              TspSkinMenuItem(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 := TspSkinPopupWindow(ParentMenu.FPopupList.Items[ParentMenu.FPopupList.Count - 1]);
            if PW.ActiveItem <> -1
            then
              TspSkinMenuItem(PW.ItemList.Items[PW.ActiveItem]).Down := False;
          end;   
      end;
  end;
end;

procedure TspSkinPopupWindow.WTProc;
begin
  Sc.Width := Width + 1;
  Sc.Height := Height + 1;

  GetScreenImage(ShowX, ShowY, Sc);
  ESc := TspEffectBMP.CreateFromhWnd(Sc.Handle);

  //
  if (PW <> nil) and (PW.CursorIndex <> -1)
  then
    Cursor := SD.StartCursorIndex + PW.CursorIndex;
  //

  SetWindowPos(Handle, HWND_TOPMOST, ShowX, ShowY, 0, 0,
      SWP_NOACTIVATE or SWP_SHOWWINDOW or SWP_NOSIZE);

  Visible := True;

  MouseTimer.Enabled := True;
  if ItemList.Count > 0
  then
    begin
      ActiveItem := 0;
      TspSkinMenuItem(ItemList.Items[0]).MouseEnter(True);
    end;

  WT.Enabled := False;
end;

procedure TspSkinPopupWindow.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 TspSkinMenuItem(ItemList.Items[i]).Down
    then
      with TspSkinMenuItem(ItemList.Items[i]) do
      begin
        Down := False;
        ReDraw;
      end;
end;

procedure TspSkinPopupWindow.TestMorph;
var
  i: Integer;
  StopMorph: Boolean;
begin
  if PW = nil then Exit;
  StopMorph := True;
  for i := 0 to ItemList.Count  - 1 do
    with TspSkinMenuItem(ItemList.Items[i]) do
    begin
      if MI.Morphing and CanMorphing
      then
        begin
          DoMorphing;
          StopMorph := False;
        end;
    end;
  if StopMorph then MorphTimer.Enabled := False;
end;

procedure TspSkinPopupWindow.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 TspSkinPopupWindow.CreateRealImage;
var
  EB1: TspEffectBmp;
  Kf: Double;
  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 := 22
        else TextOffset := GlyphWidth + 3;
        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;

  if AlphaBlend and not CheckW2KWXP
  then
    begin
      EB1 := TspEffectBmp.CreateFromhWnd(B.Handle);
      kf := 1 - AlphaBlendValue / 255;
      EB1.MorphRect(ESc, kf, Rect(0, 0, B.Width, B.Height), 0, 0);
      EB1.Draw(B.Canvas.Handle, 0, 0);
      EB1.Free;
    end;
end;

procedure TspSkinPopupWindow.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 TspSkinMenuItem(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 + 6;
  end;

  function GetMenuWindowWidth: Integer;
  var
    i, iw: Integer;
  begin
    iw := 0;
    for i := 0 to ItemList.Count - 1 do
    begin
      j := CalcItemTextWidth(TspSkinMenuItem(ItemList.Items[i]).MenuItem);
      if j > iw then iw := j;
    end;
    inc(iw, 16);
    if ImgL <> nil
    then
      GlyphWidth := ImgL.Width + 5
    else
      GlyphWidth := 16;
    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;

begin
  if SD <> nil
  then
    begin
      i := SD.GetIndex('MENUITEM');
      if i = -1 then i := SD.GetIndex('menuitem');
    end
  else
    i := -1;

  if (PW <> nil) and (i <> - 1) and ParentMenu.UseSkinFont
  then
    begin
      // init menu
      DSMI := TspDataSkinMenuItem(SD.ObjectList.Items[i]);
      with Canvas.Font do
      begin
        Height := DSMI.FontHeight;
        Style := DSMI.FontStyle;
        Name := DSMI.FontName;
        CharSet := ParentMenu.FDefaultMenuItemFont.Charset;
      end;
    end
  else
    begin
      if (i <> -1)