skingrids.pas

一套及时通讯的原码

      SetBkMode(ChildDC, Windows.Transparent);
      SetTextColor(ChildDC, Font.Color);
      Result := GetStockObject(HOLLOW_BRUSH);
    end
  else
    inherited;
end;

procedure TspSkinTransparentMaskEdit.WMEraseBkgnd(var Message: TWMEraseBkgnd);
begin
  if FTransparent then Invalidate else inherited;
end;

procedure TspSkinTransparentMaskEdit.DoExit;
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.DoEnter;
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMKeyDown(var Message: TWMKeyDown);
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMSetText(var Message:TWMSetText);
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMMove(var Message: TMessage);
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMCut(var Message: TMessage);
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMPaste(var Message: TMessage);
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMClear(var Message: TMessage);
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMUndo(var Message: TMessage);
begin
  inherited;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMLButtonDown(var Message: TWMKeyDown);
begin
  inherited;
  FDown := True;
  if FTransparent then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMMOUSEMOVE;
begin
  inherited;
  if FDown then Invalidate;
end;

procedure TspSkinTransparentMaskEdit.WMLButtonUp;
begin
  inherited;
  FDown := False;
end;

procedure TspSkinTransparentMaskEdit.Invalidate;
begin
  if FTransparent then InvalidateEdit else inherited;
end;

constructor TspSkinInplaceEdit.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  ParentCtl3D := False;
  Ctl3D := False;
  TabStop := False;
  BorderStyle := bsNone;
end;

procedure TspSkinInplaceEdit.WMEraseBkgnd(var Message: TWMEraseBkgnd);
begin
  if not Transparent then inherited;
end;

procedure TspSkinInplaceEdit.CreateParams(var Params: TCreateParams);
begin
  inherited CreateParams(Params);
  Params.Style := Params.Style or ES_MULTILINE;
end;

procedure TspSkinInplaceEdit.SetGrid(Value: TspSkinCustomGrid);
begin
  FGrid := Value;
end;

procedure TspSkinInplaceEdit.CMShowingChanged(var Message: TMessage);
begin
end;

procedure TspSkinInplaceEdit.WMGetDlgCode(var Message: TWMGetDlgCode);
begin
  inherited;
  if goTabs in Grid.Options then
    Message.Result := Message.Result or DLGC_WANTTAB;
end;

procedure TspSkinInplaceEdit.WMPaste(var Message);
begin
  if not EditCanModify then Exit;
  inherited
end;

procedure TspSkinInplaceEdit.WMClear(var Message);
begin
  if not EditCanModify then Exit;
  inherited;
end;

procedure TspSkinInplaceEdit.WMCut(var Message);
begin
  if not EditCanModify then Exit;
  inherited;
end;

procedure TspSkinInplaceEdit.DblClick;
begin
  Grid.DblClick;
end;

function TspSkinInplaceEdit.EditCanModify: Boolean;
begin
  Result := Grid.CanEditModify;
end;

procedure TspSkinInplaceEdit.KeyDown(var Key: Word; Shift: TShiftState);

  procedure SendToParent;
  begin
    Grid.KeyDown(Key, Shift);
    Key := 0;
  end;

  procedure ParentEvent;
  var
    GridKeyDown: TKeyEvent;
  begin
    GridKeyDown := Grid.OnKeyDown;
    if Assigned(GridKeyDown) then GridKeyDown(Grid, Key, Shift);
  end;

  function ForwardMovement: Boolean;
  begin
    Result := goAlwaysShowEditor in Grid.Options;
  end;

  function Ctrl: Boolean;
  begin
    Result := ssCtrl in Shift;
  end;

  function Selection: TSelection;
  begin
    SendMessage(Handle, EM_GETSEL, Longint(@Result.StartPos), Longint(@Result.EndPos));
  end;

  function RightSide: Boolean;
  begin
    with Selection do
      Result := ((StartPos = 0) or (EndPos = StartPos)) and
        (EndPos = GetTextLen);
   end;

  function LeftSide: Boolean;
  begin
    with Selection do
      Result := (StartPos = 0) and ((EndPos = 0) or (EndPos = GetTextLen));
  end;

begin
  case Key of
    VK_UP, VK_DOWN, VK_PRIOR, VK_NEXT, VK_ESCAPE: SendToParent;
    VK_INSERT:
      if Shift = [] then SendToParent
      else if (Shift = [ssShift]) and not Grid.CanEditModify then Key := 0;
    VK_LEFT: if ForwardMovement and (Ctrl or LeftSide) then SendToParent;
    VK_RIGHT: if ForwardMovement and (Ctrl or RightSide) then SendToParent;
    VK_HOME: if ForwardMovement and (Ctrl or LeftSide) then SendToParent;
    VK_END: if ForwardMovement and (Ctrl or RightSide) then SendToParent;
    VK_F2:
      begin
        ParentEvent;
        if Key = VK_F2 then
        begin
          Deselect;
          Exit;
        end;
      end;
    VK_TAB: if not (ssAlt in Shift) then SendToParent;
  end;
  if (Key = VK_DELETE) and not Grid.CanEditModify then Key := 0;
  if Key <> 0 then
  begin
    ParentEvent;
    inherited KeyDown(Key, Shift);
  end;
end;

procedure TspSkinInplaceEdit.KeyPress(var Key: Char);
var
  Selection: TSelection;
begin
  Grid.KeyPress(Key);
  if (Key in [#32..#255]) and not Grid.CanEditAcceptKey(Key) then
  begin
    Key := #0;
    MessageBeep(0);
  end;
  case Key of
    #9, #27: Key := #0;
    #13:
      begin
        SendMessage(Handle, EM_GETSEL, Longint(@Selection.StartPos), Longint(@Selection.EndPos));
        if (Selection.StartPos = 0) and (Selection.EndPos = GetTextLen) then
          Deselect else
          SelectAll;
        Key := #0;
      end;
    ^H, ^V, ^X, #32..#255:
      if not Grid.CanEditModify then Key := #0;
  end;
  if Key <> #0 then inherited KeyPress(Key);
end;

procedure TspSkinInplaceEdit.KeyUp(var Key: Word; Shift: TShiftState);
begin
  Grid.KeyUp(Key, Shift);
end;

procedure TspSkinInplaceEdit.WndProc(var Message: TMessage);
begin
  case Message.Msg of
    WM_SETFOCUS:
      begin
        if (GetParentForm(Self) = nil) or GetParentForm(Self).SetFocusedControl(Grid) then Dispatch(Message);
        Exit;
      end;
    WM_LBUTTONDOWN:
      begin
        if ((GetMessageTime - FClickTime) < GetDoubleClickTime) then
          Message.Msg := WM_LBUTTONDBLCLK;
        FClickTime := 0;
      end;
  end;
  inherited WndProc(Message);
end;

procedure TspSkinInplaceEdit.Deselect;
begin
  SendMessage(Handle, EM_SETSEL, $7FFFFFFF, Longint($FFFFFFFF));
end;

procedure TspSkinInplaceEdit.Invalidate;
var
  Cur: TRect;
begin
  if not Transparent
  then
    begin
      ValidateRect(Handle, nil);
      InvalidateRect(Handle, nil, True);
      Windows.GetClientRect(Handle, Cur);
      MapWindowPoints(Handle, Grid.Handle, Cur, 2);
      ValidateRect(Grid.Handle, @Cur);
      InvalidateRect(Grid.Handle, @Cur, False);
    end
  else
    inherited;
end;

procedure TspSkinInplaceEdit.Hide;
begin
  if HandleAllocated and IsWindowVisible(Handle) then
  begin
    Invalidate;
    SetWindowPos(Handle, 0, 0, 0, 0, 0, SWP_HIDEWINDOW or SWP_NOZORDER or
      SWP_NOREDRAW);
    if Focused then Windows.SetFocus(Grid.Handle);
  end;
end;

function TspSkinInplaceEdit.PosEqual(const Rect: TRect): Boolean;
var
  Cur: TRect;
begin
  GetWindowRect(Handle, Cur);
  MapWindowPoints(HWND_DESKTOP, Grid.Handle, Cur, 2);
  Result := EqualRect(Rect, Cur);
end;

procedure TspSkinInplaceEdit.InternalMove(const Loc: TRect; Redraw: Boolean);
begin
  if IsRectEmpty(Loc) then Hide
  else
  begin
    CreateHandle;
    Redraw := Redraw or not IsWindowVisible(Handle);
    Invalidate;
    with Loc do
      SetWindowPos(Handle, HWND_TOP, Left, Top, Right - Left, Bottom - Top,
        SWP_SHOWWINDOW or SWP_NOREDRAW);
    BoundsChanged;
    if Redraw then Invalidate;
    if Grid.Focused then
      Windows.SetFocus(Handle);
  end;
end;

procedure TspSkinInplaceEdit.BoundsChanged;
var
  R: TRect;
begin
  R := Rect(2, 2, Width - 2, Height);
  SendMessage(Handle, EM_SETRECTNP, 0, LongInt(@R));
  SendMessage(Handle, EM_SCROLLCARET, 0, 0);
end;

procedure TspSkinInplaceEdit.UpdateLoc(const Loc: TRect);
begin
  InternalMove(Loc, False);
end;

function TspSkinInplaceEdit.Visible: Boolean;
begin
  Result := IsWindowVisible(Handle);
end;

procedure TspSkinInplaceEdit.Move(const Loc: TRect);
begin
  InternalMove(Loc, True);
end;

procedure TspSkinInplaceEdit.SetFocus;
begin
  if IsWindowVisible(Handle) then
    Windows.SetFocus(Handle);
end;

procedure TspSkinInplaceEdit.UpdateContents;
begin
  Text := '';
  EditMask := Grid.GetEditMask(Grid.Col, Grid.Row);
  Text := Grid.GetEditText(Grid.Col, Grid.Row);
  MaxLength := Grid.GetEditLimit;
end;

{ TspSkinCustomGrid }

constructor TspSkinCustomGrid.Create(AOwner: TComponent);
const
  GridStyle = [csCaptureMouse, csOpaque, csDoubleClicks];
begin
  inherited Create(AOwner);
  FHScrollBar := nil;
  FVScrollBar := nil;
  FTransparent := False;
  Ctl3D := False;
  if NewStyleControls then
    ControlStyle := GridStyle else
    ControlStyle := GridStyle + [csFramed];
  FCanEditModify := True;
  FInCheckScrollBars := False;
  FColCount := 5;
  FRowCount := 5;
  FFixedCols := 1;
  FFixedRows := 1;
  FGridLineWidth := 1;
  FOptions := [goFixedVertLine, goFixedHorzLine, goVertLine, goHorzLine,
    goRangeSelect];
  DesignOptionsBoost := [goColSizing, goRowSizing];
  FFixedColor := clBtnFace;
  FBorderStyle := bsSingle;
  FDefaultColWidth := 64;
  FDefaultRowHeight := 24;
  FDefaultDrawing := True;
  FSaveCellExtents := True;
  FEditorMode := False;
  Color := clWindow;
  ParentColor := False;
  TabStop := True;
  SetBounds(Left, Top, FColCount * FDefaultColWidth,
    FRowCount * FDefaultRowHeight);
  Picture := nil;
  BGPicture := nil;
  Initialize;
  FSkinDataName := 'grid';
  FGridLineColor := clWindowText;
end;