sdblookupcombobox.pas

Alpha Controls 界面控件包

      FCommonData.InitCacheBmp;
      PrepareCache
    end;
    UpdateCorners(FCommonData, 0);

    BitBlt(DC, 0, 0, Width, BordWidth, FCommonData.FCacheBmp.Canvas.Handle, 0, 0, SRCCOPY);
    BitBlt(DC, 0, BordWidth, BordWidth, Height, FCommonData.FCacheBmp.Canvas.Handle, 0, BordWidth, SRCCOPY);
    BitBlt(DC, BordWidth, Height - BordWidth, Width - BordWidth, BordWidth, FCommonData.FCacheBmp.Canvas.Handle, BordWidth, Height - BordWidth, SRCCOPY);
    BitBlt(DC, Width - BordWidth, BordWidth, BordWidth, Height - BordWidth, FCommonData.FCacheBmp.Canvas.Handle, Width - BordWidth, BordWidth, SRCCOPY);
{$IFDEF DYNAMICCACHE}
    if Assigned(FCommonData.FCacheBmp) then FreeAndNil(FCommonData.FCacheBmp);
{$ENDIF}
  finally
    RestoreDC(DC, SavedDC);
    ReleaseDC(Handle, DC);
  end;
end;

procedure TsDBLookupComboBox.PaintButton;
var
  R : TRect;
  Mode : integer;
  c : TsColor;
  glIndex : integer;
  TmpBtn : TBitmap;
begin
  if ListVisible then Mode := 2 else if ControlIsActive(FCommonData) then Mode := 1 else Mode := 0;
  R := ButtonRect;

  if FCommonData.SkinManager.ConstData.ComboBtnIndex > -1 then begin
    TmpBtn := CreateBmpLike(FCommonData.FCacheBmp);
    BitBlt(TmpBtn.Canvas.Handle, 0, 0, TmpBtn.Width, TmpBtn.Height, FCommonData.FCacheBmp.Canvas.Handle, 0, 0, SRCCOPY);
    PaintItem(FCommonData.SkinManager.ConstData.ComboBtnIndex, s_ComboBtn, MakeCacheInfo(TmpBtn),
      True, Mode, R, Point(0, 0), FCommonData.FCacheBmp, FCommonData.SkinManager, FCommonData.SkinManager.ConstData.ComboBtnBG, FCommonData.SkinManager.ConstData.ComboBtnBGHot);
    FreeAndNil(TmpBtn);
  end;
  glIndex := FCommonData.SkinManager.ConstData.ComboGlyph;
  if glIndex > -1 then begin
    if ControlIsActive(FCommonData)
      then c.C := FCommonData.SkinManager.gd[FCommonData.SkinIndex].HotColor
      else c.C := FCommonData.SkinManager.gd[FCommonData.SkinIndex].Color;

    DrawSkinGlyph(FCommonData.FCacheBmp,
      Point(R.Left + (WidthOf(R) - WidthOf(FCommonData.SkinManager.ma[glIndex].R) div FCommonData.SkinManager.ma[glIndex].ImageCount) div 2,
            (Height - ButtonHeight) div 2), Mode, 1, FCommonData.SkinManager.ma[FCommonData.SkinManager.ConstData.ComboGlyph]);
  end;
end;

procedure TsDBLookupComboBox.PaintText;
var
  R : TRect;
begin
  R := Rect(4, 3, ButtonRect.Left, Height - 3);
  FCommonData.FCacheBMP.Canvas.Font.Assign(Font);
  if Focused then begin
    FCommonData.FCacheBMP.Canvas.Brush.Color := clHighLight;
    FCommonData.FCacheBMP.Canvas.FillRect(R);
    FCommonData.FCacheBMP.Canvas.Font.Color := colortoRGB(clHighLightText);
    FCommonData.FCacheBMP.Canvas.TextRect(R, R.Left + 1, R.Top + 1, Text);
    FCommonData.FCacheBMP.Canvas.DrawFocusRect(R);
//    FocusRect(FCommonData.FCacheBMP.Canvas, R);
//    DrawText(FCommonData.FCacheBMP.Canvas.Handle, PChar(Text), 0, R, DT_TOP or DT_SINGLELINE or DT_WORDBREAK or GetStringFlags(Self, Alignment));
  end
  else WriteTextEx(FCommonData.FCacheBMP.Canvas, PChar(Text), True, R, DT_NOPREFIX or DT_TOP or DT_SINGLELINE or DT_WORDBREAK or GetStringFlags(Self, Alignment),
              FCommonData, ControlIsActive(FCommonData));
end;

procedure TsDBLookupComboBox.PrepareCache;
begin
  FCommonData.InitCacheBmp;
  PaintItem(FCommonData,
                GetParentCache(FCommonData), True,
                integer(ControlIsActive(FCommonData)),
                Rect(0, 0, Width, Height),
                Point(Left, top), FCommonData.FCacheBmp, False);
  PaintText;
  PaintButton;

  if not Enabled then
    BmpDisabledKind(FCommonData.FCacheBmp, FDisabledKind, Parent, GetParentCache(FCommonData), Point(Left, Top));
end;

procedure TsDBLookupComboBox.SetAlignment(const Value: TAlignment);
begin
  if FAlignment <> Value then begin
    FAlignment := Value;
    FCommonData.Invalidate;
  end;
end;

procedure TsDBLookupComboBox.SetButtonMargin(const Value: integer);
begin
  if FButtonMargin <> Value then begin
    FButtonMargin := Value;
    FCommonData.Invalidate;
  end;
end;

procedure TsDBLookupComboBox.SetDisabledKind(const Value: TsDisabledKind);
begin
  if FDisabledKind <> Value then begin
    FDisabledKind := Value;
    FCommonData.Invalidate;
  end;
end;

procedure TsDBLookupComboBox.WndProc(var Message: TMessage);
begin
{$IFDEF LOGGED}
  AddToLog(Message);
{$ENDIF}
  if Message.Msg = SM_ALPHACMD then case Message.WParamHi of
    AC_CTRLHANDLED : begin Message.LParam := 1; Exit end; // AlphaSkins supported
    AC_REMOVESKIN : begin
      CommonWndProc(Message, FCommonData);
      if Assigned(ListSW) then begin
        FreeAndNil(ListSW);
        lBoxHandle := 0;
      end;
      RecreateWnd;
      exit
    end;
    AC_REFRESH : begin
      CommonWndProc(Message, FCommonData);
      if FCommonData.Skinned then begin
        if not FCommonData.CustomColor then Color := FCommonData.SkinManager.gd[FCommonData.SkinIndex].Color;
        if not FCommonData.CustomFont then Font.Color := FCommonData.SkinManager.gd[FCommonData.SkinIndex].FontColor[1];
      end;
      Repaint;
      exit
    end;
    AC_SETNEWSKIN : begin
      CommonWndProc(Message, FCommonData);
      exit
    end;
    AC_DROPPEDDOWN : begin
      Message.WParamLo := integer(ListVisible);//DroppedDown);
    end;
    AC_ENDPARENTUPDATE : if FCommonData.Updating then begin
      FCommonData.Updating := False;
      Repaint;
      Exit;
    end;
  end;
  if not ControlIsReady(Self) or not FCommonData.Skinned then inherited else begin
    case Message.Msg of
      WM_DRAWITEM : alert;
      WM_CTLCOLOREDIT, WM_ERASEBKGND : Exit;
      WM_SETFOCUS, CM_ENTER : if CanFocus then begin
        FCommonData.FFocused := True;
        FCommonData.FMouseAbove := False;
        FCommonData.BGChanged := True;
        inherited;
        Exit
      end;
      WM_KILLFOCUS, CM_EXIT: begin
        FCommonData.FFocused := False;
        FCommonData.FMouseAbove := False;
        FCommonData.BGChanged := True;
        inherited;
        Exit
      end;
      WM_NCPAINT : begin
        PaintBorder;
        Exit;
      end;
      WM_PAINT : begin
        if Focused then inherited;
        OurPaintHandler;
        Exit
      end;
      CM_MOUSEENTER, CM_MOUSELEAVE : begin
        FCommonData.FMouseAbove := Message.Msg = CM_MOUSEENTER;
        FCommonData.BGChanged := True;
//        Repaint;
      end;
      WM_CTLCOLORLISTBOX : if not (csLoading in ComponentState) and (lBoxHandle = 0) then begin
//        if Items.Count > DropDownCount then begin
          lBoxHandle := hwnd(Message.LParam);
          ListSW := TacComboListWnd.Create(lboxhandle, nil, SkinData.SkinManager, s_Edit);
//          if Style = csSimple then
          TacComboListWnd(ListSW).SimplyBox := True
//          else TacComboListWnd(ListSW).SimplyBox := False;
//        end;
      end;
    end;
    CommonWndProc(Message, FCommonData);
    inherited;
    case Message.Msg of
      CM_VISIBLECHANGED, CM_ENABLEDCHANGED, WM_SETFONT : begin
        FCommonData.Invalidate;
      end;
    end;
  end;
  // Aligning of the bound label
  if Assigned(BoundLabel) and Assigned(BoundLabel.FtheLabel) then case Message.Msg of
    WM_SIZE, WM_MOVE : BoundLabel.AlignLabel;
    CM_VISIBLECHANGED : begin BoundLabel.FtheLabel.Visible := Visible; BoundLabel.AlignLabel end;
    CM_ENABLEDCHANGED : begin BoundLabel.FtheLabel.Enabled := Enabled; BoundLabel.AlignLabel end;
    CM_BIDIMODECHANGED : begin BoundLabel.FtheLabel.BiDiMode := BiDiMode; BoundLabel.AlignLabel end;
  end;
end;

{
procedure TsDBLookupComboBox.WriteText;
var
  Flags: Longint;
  R : TRect;
begin
  if Text <> '' then begin
    Flags := 0;
    Canvas.Font.Assign(Font);
    R := ClientRect;
    dec(R.Left);
    dec(R.Top);
    dec(R.Right, ButtonWidth);

    case Alignment of
      taLeftJustify : begin
        Flags := DT_LEFT;
      end;
      taRightJustify : begin
        Flags := DT_RIGHT;
      end;
      taCenter : begin
        Flags := DT_CENTER;
      end
    end;
    Flags := Flags or DT_EXPANDTABS or DT_VCENTER or DT_SINGLELINE;
    Flags := DrawTextBiDiModeFlags(Flags);

    Canvas.Pen.Style := psSolid;
    Canvas.Brush.Style := bsClear;
    DrawText(Canvas.Handle, PChar(Text), Length(Text), R, Flags);
  end;
end;
}
end.