svx/source/stbctrls/modctrl.cxx

   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 #include <vcl/status.hxx>
  21 #include <vcl/image.hxx>
  22 #include <vcl/timer.hxx>
  23 #include <vcl/idle.hxx>
  24 #include <svl/eitem.hxx>
  25 #include <sfx2/app.hxx>
  26
  27 #include <svx/dialogs.hrc>
  28 #include <svx/modctrl.hxx>
  29 #include <svx/dialmgr.hxx>
  30
  31 #include <com/sun/star/beans/PropertyValue.hpp>
  32 #include "modctrl_internal.hxx"
  33
  34 using ::com::sun::star::uno::Sequence;
  35 using ::com::sun::star::beans::PropertyValue;
  36
  37 SFX_IMPL_STATUSBAR_CONTROL(SvxModifyControl, SfxBoolItem);
  38
  39 struct SvxModifyControl::ImplData
  40 {
  41     enum ModificationState
  42     {
  43         MODIFICATION_STATE_NO = 0,
  44         MODIFICATION_STATE_YES,
  45         MODIFICATION_STATE_FEEDBACK,
  46         MODIFICATION_STATE_SIZE
  47     };
  48
  49     Idle  maIdle;
  50     Image maImages[MODIFICATION_STATE_SIZE];
  51
  52     ModificationState mnModState;
  53
  54     ImplData():
  55         mnModState(MODIFICATION_STATE_NO)
  56     {
  57         maImages[MODIFICATION_STATE_NO]       = Image(SVX_RES(RID_SVXBMP_DOC_MODIFIED_NO));
  58         maImages[MODIFICATION_STATE_YES]      = Image(SVX_RES(RID_SVXBMP_DOC_MODIFIED_YES));
  59         maImages[MODIFICATION_STATE_FEEDBACK] = Image(SVX_RES(RID_SVXBMP_DOC_MODIFIED_FEEDBACK));
  60
  61         maIdle.SetPriority(SchedulerPriority::LOWEST);
  62     }
  63 };
  64
  65 SvxModifyControl::SvxModifyControl( sal_uInt16 _nSlotId, sal_uInt16 _nId, StatusBar& rStb ) :
  66     SfxStatusBarControl( _nSlotId, _nId, rStb ),
  67     mxImpl(new ImplData)
  68 {
  69 //#ifndef MACOSX
  70     if ( rStb.GetDPIScaleFactor() > 1 )
  71     {
  72         for (int i = 0; i < mxImpl->MODIFICATION_STATE_SIZE; i++)
  73         {
  74             BitmapEx b = mxImpl->maImages[i].GetBitmapEx();
  75             b.Scale(rStb.GetDPIScaleFactor(), rStb.GetDPIScaleFactor(), BmpScaleFlag::Fast);
  76             mxImpl->maImages[i] = Image(b);
  77         }
  78     }
  79 //#endif
  80     mxImpl->maIdle.SetIdleHdl( LINK(this, SvxModifyControl, OnTimer) );
  81 }
  82
  83
  84
  85 void SvxModifyControl::StateChanged( sal_uInt16, SfxItemState eState,
  86                                      const SfxPoolItem* pState )
  87 {
  88     if ( SfxItemState::DEFAULT != eState )
  89         return;
  90
  91     DBG_ASSERT( pState->ISA( SfxBoolItem ), "invalid item type" );
  92     const SfxBoolItem* pItem = static_cast<const SfxBoolItem*>(pState);
  93     mxImpl->maIdle.Stop();
  94
  95     bool modified = pItem->GetValue();
  96     bool start = ( !modified && mxImpl->mnModState == ImplData::MODIFICATION_STATE_YES);  // should timer be started and feedback image displayed ?
  97
  98     mxImpl->mnModState = (start ? ImplData::MODIFICATION_STATE_FEEDBACK : (modified ? ImplData::MODIFICATION_STATE_YES : ImplData::MODIFICATION_STATE_NO));
  99
 100     _repaint();
 101
 102     int nResId = modified ? RID_SVXSTR_DOC_MODIFIED_YES : RID_SVXSTR_DOC_MODIFIED_NO;
 103     GetStatusBar().SetQuickHelpText(GetId(), SVX_RESSTR(nResId));
 104
 105     if ( start )
 106         mxImpl->maIdle.Start();
 107 }
 108
 109
 110
 111 IMPL_LINK_TYPED( SvxModifyControl, OnTimer, Idle *, pTimer, void )
 112 {
 113     if (pTimer == 0)
 114         return;
 115
 116     pTimer->Stop();
 117     mxImpl->mnModState = ImplData::MODIFICATION_STATE_NO;
 118
 119     _repaint();
 120 }
 121
 122
 123
 124 void SvxModifyControl::_repaint()
 125 {
 126     if ( GetStatusBar().AreItemsVisible() )
 127         GetStatusBar().SetItemData( GetId(), 0 );    // force repaint
 128 }
 129
 130 /**
 131  * Given a bounding rectangle and an image, determine the top-left position
 132  * of the image so that the image would look centered both horizontally and
 133  * vertically.
 134  *
 135  * @param rBoundingRect bounding rectangle
 136  * @param rImg image
 137  *
 138  * @return Point top-left corner of the centered image position
 139  */
 140 Point centerImage(const Rectangle& rBoundingRect, const Image& rImg)
 141 {
 142     Size aImgSize = rImg.GetSizePixel();
 143     Size aRectSize = rBoundingRect.GetSize();
 144     long nXOffset = (aRectSize.getWidth() - aImgSize.getWidth())/2;
 145     long nYOffset = (aRectSize.getHeight() - aImgSize.getHeight())/2;
 146     Point aPt = rBoundingRect.TopLeft();
 147     aPt += Point(nXOffset, nYOffset);
 148     return aPt;
 149 }
 150
 151 void SvxModifyControl::Paint( const UserDrawEvent& rUsrEvt )
 152 {
 153     vcl::RenderContext* pDev = rUsrEvt.GetRenderContext();
 154     Rectangle aRect(rUsrEvt.GetRect());
 155
 156     ImplData::ModificationState state = mxImpl->mnModState;
 157     Point aPt = centerImage(aRect, mxImpl->maImages[state]);
 158     pDev->DrawImage(aPt, mxImpl->maImages[state]);
 159 }
 160
 161 void SvxModifyControl::Click()
 162 {
 163     if (mxImpl->mnModState != ImplData::MODIFICATION_STATE_YES)
 164         // document not modified.  nothing to do here.
 165         return;
 166
 167     Sequence<PropertyValue> aArgs;
 168     execute(OUString(".uno:Save"), aArgs);
 169 }
 170
 171
 172
 173 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */