starmath/inc/scrwin.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <vcl/window.hxx>
  23 #include <vcl/vclptr.hxx>
  24
  25 class DataChangedEvent;
  26 class ScrollBar;
  27 class ScrollBarBox;
  28
  29 class ScrollableWindow : public vcl::Window
  30 {
  31 private:
  32     Point           aPixOffset;         // offset to virtual window (pixel)
  33     Size            aTotPixSz;          // total size of virtual window (pixel)
  34     tools::Long            nLinePixH;          // size of a line/column (pixel)
  35     tools::Long            nColumnPixW;
  36
  37     VclPtr<ScrollBar>    aVScroll;      // the scrollbars
  38     VclPtr<ScrollBar>    aHScroll;
  39     VclPtr<ScrollBarBox> aCornerWin;    // window in the bottom right corner
  40     bool            bScrolling:1;       // user controlled scrolling
  41
  42     DECL_LINK( ScrollHdl, ScrollBar *, void );
  43     DECL_LINK( EndScrollHdl, ScrollBar *, void );
  44
  45 public:
  46                     ScrollableWindow( vcl::Window* pParent );
  47     virtual         ~ScrollableWindow() override;
  48     virtual void    dispose() override;
  49
  50     virtual void    Resize() override;
  51     virtual void    Command( const CommandEvent& rCEvt ) override;
  52     virtual void    DataChanged( const DataChangedEvent& rDEvt ) override;
  53
  54     using OutputDevice::SetMapMode;
  55     virtual void    SetMapMode( const MapMode& rNewMapMode ) override;
  56     MapMode GetMapMode() const;
  57
  58     void            SetTotalSize( const Size& rNewSize );
  59     Size            GetTotalSize() const { return PixelToLogic( aTotPixSz ); }
  60
  61     using Window::Scroll;
  62     virtual void    Scroll( tools::Long nDeltaX, tools::Long nDeltaY, ScrollFlags nFlags = ScrollFlags::NONE ) override;
  63
  64 private:
  65     Size         GetOutputSizePixel() const;
  66 };
  67
  68 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */