sbutton.pas

Alpha Controls 界面控件包

          BitBlt(DC, Width - FCommonData.SkinManager.MaskWidthRight(FCommonData.BorderIndex), 0, FCommonData.SkinManager.MaskWidthRight(FCommonData.BorderIndex), FCommonData.SkinManager.MaskWidthTop(FCommonData.BorderIndex), FCommonData.FCacheBmp.Canvas.Handle, Width - FCommonData.SkinManager.MaskWidthRight(FCommonData.BorderIndex), 0, SRCCOPY);
        end;
        if not (csDesigning in ComponentState) and not (csAlignmentNeeded in ControlState) then begin // Set region
          SetWindowRgn(Handle, FRegion, False); // Speed increased if repainting disabled
          FRegion := 0;
          RegionChanged := False;
        end;
      end;
      BitBlt(DC, 0, 0, Width, Height, FCommonData.FCacheBmp.Canvas.Handle, 0, 0, SRCCOPY);
    end;
  finally
    RestoreDC(DC, SavedDC);
    if aDC = 0 then ReleaseDC(Handle, DC);
    EndPaint(Handle, PS);
  end;
end;

procedure TsButton.PrepareCache;
var
  CI : TCacheInfo;
begin
  CI := GetParentCache(FCommonData);
  FCommonData.InitCacheBmp;
  ParentCenterColor := clFuchsia;
  if not CI.Ready and (Parent <> nil) then begin // v4.40
    CtrlParentColor := ColorToRGB(TsHackedControl(Parent).Color);
    ParentCenterColor := ColorToRGB(TsHackedControl(Parent).Color);//CI.Bmp.Canvas.Pixels[CI.Bmp.Width div 2, CI.Bmp.Height div 2];
  end;
  if CI.Ready and (Parent <> nil) and not SkinData.RepaintIfMoved and (ParentCenterColor = clFuchsia{ParentCenterColor may be already defined}) then begin
    InitParentColor(Parent); // v4.40
  end;

  PaintItemBG(FCommonData, CI, CurrentState, Rect(0, 0, width, Height), Point(Left, Top), FCommonData.FCacheBMP, integer(Down), integer(Down));
  if RegionChanged then begin FRegion := 0; FRegion := CreateRectRgn(0, 0, Width, Height); end; // Empty region

  if FCommonData.SkinManager.IsValidImgIndex(FCommonData.BorderIndex) then
    PaintRgnBorder(FCommonData.FCacheBmp, FRegion, True, FCommonData.SkinManager.ma[FCommonData.BorderIndex], CurrentState);

  DrawCaption;
{
  if RegionChanged and not (csDesigning in ComponentState) and not (csAlignmentNeeded in ControlState) then begin // Set region
    SetWindowRgn(Handle, FRegion, False);//True);//v4.71
    RegionChanged := False;
  end;
}
  if not Enabled then begin
    ParentCenterColor := clFuchsia;
    CI := GetParentCache(FCommonData);
    BmpDisabledKind(FCommonData.FCacheBmp, FDisabledKind, Parent, CI, Point(Left, Top));
  end;
  CtrlParentColor := clFuchsia;
  ParentCenterColor := clFuchsia;
  FCommonData.BGChanged := False;
end;

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

{$IFNDEF DELPHI7UP}
procedure TsButton.SetWordWrap(const Value: boolean);
begin
  if FWordWrap <> Value then begin
    FWordWrap := Value;
    FCommonData.BGChanged := True;
    Repaint;
  end;
end;
{$ENDIF}

procedure TsButton.SetDown(const Value: boolean);
begin
  if FPressed <> Value then begin
    FPressed := Value;
    if FDown <> Value then FDown := Value;
    RegionChanged := True;
    FCommonData.BGChanged := True;
    Repaint;
  end;
end;

procedure TsButton.SetFocusMargin(const Value: integer);
begin
  if (FFocusMargin <> Value) then begin
    FFocusMargin := Value;
  end;
end;

function TsButton.TextRectSize: TSize;
var
  R : TRect;
  DrawStyle: Longint;
begin
  R := Rect(0, 0, MaxCaptionWidth(Self), 0);
  DrawStyle := DT_EXPANDTABS or DT_CENTER or DT_CALCRECT;
  if WordWrap
    then DrawStyle := DrawStyle or DT_WORDBREAK
    else DrawStyle := DrawStyle or DT_SINGLELINE;
  AcDrawText(FCommonData.FCacheBMP.Canvas.Handle, Caption, R, DrawStyle);
  Result.cy := HeightOf(R);
  Result.cx := WidthOf(R);
end;

procedure TsButton.WMKeyUp(var Message: TWMKey);
begin
  if Assigned(FCommonData) and FCommonData.Skinned and Down and (Message.CharCode = 32) then begin
    FDown := False;
    RegionChanged := True;
    FCommonData.BGChanged := True;
    Repaint;
    Click;
  end;
  inherited;
end;

procedure TsButton.WndProc(var Message: TMessage);
begin
{$IFDEF LOGGED}
  if Message.Msg = WM_SETREDRAW then LogLines.Add('WM_SETREDRAW ' + IntToStr(Message.WParam))
  else AddToLog(Message);
{$ENDIF}
  if (Message.Msg = WM_KILLFOCUS) and (csDestroying in ComponentState) then Exit;
  if Message.Msg = SM_ALPHACMD then case Message.WParamHi of
    AC_CTRLHANDLED : begin Message.LParam := 1; Exit end; // AlphaSkins supported
    AC_GETAPPLICATION : begin Message.Result := longint(Application); Exit end;
    AC_REMOVESKIN : if LongWord(Message.LParam) = LongWord(SkinData.SkinManager) then begin
      StopFading(FadeTimer, FCommonData);
      CommonWndProc(Message, FCommonData);
      SetWindowRgn(Handle, 0, False);
      Repaint; // v4.31
      exit
    end;
    AC_REFRESH : if (LongWord(Message.LParam) = LongWord(SkinData.SkinManager)) then begin
      StopFading(FadeTimer, FCommonData);
      CommonWndProc(Message, FCommonData);
      RegionChanged := True;
      Repaint;
      exit
    end;
    AC_PREPARECACHE : PrepareCache;
    AC_DRAWANIMAGE : if FRegion <> 0 then DeleteObject(FRegion);
    AC_STOPFADING : begin StopFading(FadeTimer, FCommonData); Exit end;
    AC_SETNEWSKIN : if (LongWord(Message.LParam) = LongWord(SkinData.SkinManager)) then begin
      StopFading(FadeTimer, FCommonData);
      RegionChanged := True;
      CommonWndProc(Message, FCommonData);
      exit
    end
  end;
  if not ControlIsReady(Self) or not FCommonData.Skinned(True) then inherited else begin
    if Message.Msg = SM_ALPHACMD then case Message.WParamHi of
      AC_ENDPARENTUPDATE : if FCommonData.Updating then begin
        FCommonData.Updating := False;
        Repaint;
        Exit
      end;
      AC_URGENTPAINT : begin // v4.08
        CommonWndProc(Message, FCommonData);
        if FCommonData.UrgentPainting then PrepareCache;
        Exit
      end;
    end
    else case Message.Msg of
      CM_FOCUSCHANGED : if Visible then begin
        if FCommonData.Skinned and Default then with Message do begin
          if (TCMFocusChanged(Message).Sender is TsButton) or (TCMFocusChanged(Message).Sender is TsBitBtn) then begin
            if Active <> (TCMFocusChanged(Message).Sender = Self) then begin
              Active := TCMFocusChanged(Message).Sender = Self;
              FCommonData.Invalidate;
            end;
          end
          else if Active <> Default then begin
            Active := Default;
            FCommonData.Invalidate;
          end;
        end;
//        Perform(WM_SETREDRAW, 0, 0); v5.25
        inherited;
//        Perform(WM_SETREDRAW, 1, 0); v5.25
        if (csDesigning in ComponentState) then begin
          Active := False;
          FCommonData.Invalidate;
        end;
      end;
      WM_WINDOWPOSCHANGED : begin
        RegionChanged := True;
        SkinData.BGChanged := True;
      end;
      CM_UIACTIVATE : SkinData.Updating := False; // v4.51
      CM_DIALOGCHAR : if (Enabled and Focused and (TCMDialogChar(Message).CharCode = VK_SPACE)) then begin
        StopFading(FadeTimer, FCommonData);
        FDown := True;
        RegionChanged := True;
        FCommonData.BGChanged := True;
        Repaint;
      end;
      CM_TEXTCHANGED : begin
        FCommonData.BGChanged := True;
        Repaint;
        Exit;
      end;
      CM_MOUSEENTER : if Enabled and not (csDesigning in ComponentState) then begin
        if Assigned(FOnMouseEnter) then FOnMouseEnter(Self);
        FCommonData.FMouseAbove := True;
//        RegionChanged := True;
        DoChangePaint(FadeTimer, FCommonData, False, EventEnabled(aeMouseEnter, FAnimatEvents));
      end;
      CM_MOUSELEAVE : if Enabled and not (csDesigning in ComponentState) then begin
        if Assigned(FOnMouseLeave) then FOnMouseLeave(Self);
        FCommonData.FMouseAbove := False;
//        RegionChanged := True;
        DoChangePaint(FadeTimer, FCommonData, False, EventEnabled(aeMouseLeave, FAnimatEvents));
      end;
//      WM_WINDOWPOSCHANGING,
      WM_SIZE : RegionChanged := True;
      BM_SETSTATE : begin exit end;
      WM_UPDATEUISTATE, WM_ERASEBKGND : begin
        Message.Result := 0;
        Exit;
      end;
      CN_CTLCOLORBTN, CN_DRAWITEM : Exit; // v4.63
      WM_PRINT : begin
        OurPaintHandler(TWMPaint(Message).DC);
        Exit;
      end;
      WM_PAINT : begin
        OurPaintHandler(0);
        if not (csDesigning in ComponentState) then Exit;
      end;
      WM_MOVE : if (FCommonData.SkinManager.gd[FCommonData.SkinIndex].Transparency > 0) or ((FCommonData.SkinManager.gd[FCommonData.SkinIndex].HotTransparency > 0) and ControlIsActive(FCommonData)) then begin
        FCommonData.BGChanged := True;
        Repaint
      end;
      WM_SETFOCUS, CM_ENTER : if not (csDesigning in ComponentState) and Visible then begin
        if Enabled then begin
          Perform(WM_SETREDRAW, 0, 0);
          inherited;
          Perform(WM_SETREDRAW, 1, 0);
          if FadeTimer <> nil then FadeTimer.Change {Fast repaint} else FCommonData.Invalidate;
        end;
        Exit;
      end;
      WM_KILLFOCUS, CM_EXIT: if not (csDesigning in ComponentState) and Visible then begin
        FDown := False;
        if Enabled then begin
          if FadeTimer <> nil then StopFading(FadeTimer, FCommonData);
          Perform(WM_SETREDRAW, 0, 0);
          inherited;
          Perform(WM_SETREDRAW, 1, 0);
          FCommonData.FFocused := False;
          RegionChanged := True;
          FCommonData.Invalidate;
          Exit
        end;
      end;
      WM_ENABLE : Exit; // Disabling of blinking when switched
    end;
    CommonWndProc(Message, FCommonData);
    inherited;
    case Message.Msg of
      CM_ENABLEDCHANGED : if Visible then begin
        FCommonData.Updating := False;
        FCommonData.Invalidate;
      end;
      CM_VISIBLECHANGED : begin
        FCommonData.BGChanged := True;
        Repaint;
      end;
      WM_SETFONT : begin
        FCommonData.Updating := False;
        FCommonData.Invalidate;
      end;
      CM_ACTIONUPDATE : begin
        if (Action <> nil) then Enabled := TCustomAction(Action).Enabled;
      end;
    end;
  end;
end;

end.