basctl/source/basicide/linenumberwindow.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
  10 #include "baside2.hxx"
  11 #include "linenumberwindow.hxx"
  12
  13 #include <vcl/xtextedt.hxx>
  14 #include <vcl/textview.hxx>
  15
  16 namespace basctl
  17 {
  18
  19 LineNumberWindow::LineNumberWindow (Window* pParent, ModulWindow* pModulWindow) :
  20     Window(pParent, WB_BORDER),
  21     m_pModulWindow(pModulWindow),
  22     m_nCurYOffset(0)
  23 {
  24     SetBackground(Wallpaper(GetSettings().GetStyleSettings().GetFieldColor()));
  25     m_nBaseWidth = GetTextWidth("8");
  26     m_nWidth = m_nBaseWidth * 3 + m_nBaseWidth / 2;
  27 }
  28
  29 LineNumberWindow::~LineNumberWindow()
  30 { }
  31
  32 void LineNumberWindow::Paint( const Rectangle& )
  33 {
  34     if(SyncYOffset())
  35         return;
  36
  37     ExtTextEngine* txtEngine = m_pModulWindow->GetEditEngine();
  38     if(!txtEngine)
  39         return;
  40
  41     TextView* txtView = m_pModulWindow->GetEditView();
  42     if(!txtView)
  43         return;
  44
  45     GetParent()->Resize();
  46
  47     int windowHeight = GetOutputSize().Height();
  48     int nLineHeight = GetTextHeight();
  49     if(!nLineHeight)
  50     {
  51         return;
  52     }
  53
  54     int startY = txtView->GetStartDocPos().Y();
  55     int nStartLine = startY / nLineHeight + 1;
  56     int nEndLine = (startY + windowHeight) / nLineHeight + 1;
  57
  58     if(txtEngine->GetParagraphCount() + 1 < (unsigned int)nEndLine)
  59         nEndLine = txtEngine->GetParagraphCount() + 1;
  60
  61     // FIXME: it would be best if we could get notified of a font change
  62     // rather than doing that re-calculation at each Paint event
  63     m_nBaseWidth = GetTextWidth("8");
  64
  65     // reserve enough for 3 sigit minimum, with a bit to spare for confort
  66     m_nWidth = m_nBaseWidth * 3 + m_nBaseWidth / 2;
  67     int i = (nEndLine + 1) / 1000;
  68     while(i)
  69     {
  70         i /= 10;
  71         m_nWidth += m_nBaseWidth;
  72     }
  73
  74     sal_Int64 y = (nStartLine - 1) * (sal_Int64)nLineHeight;
  75     for(sal_Int32 n = nStartLine; n <= nEndLine; ++n, y += nLineHeight)
  76         DrawText(Point(0, y - m_nCurYOffset), OUString::valueOf(n));
  77 }
  78
  79 void LineNumberWindow::DataChanged(DataChangedEvent const & rDCEvt)
  80 {
  81     Window::DataChanged(rDCEvt);
  82     if (rDCEvt.GetType() == DATACHANGED_SETTINGS
  83         && (rDCEvt.GetFlags() & SETTINGS_STYLE) != 0)
  84     {
  85         Color aColor(GetSettings().GetStyleSettings().GetFieldColor());
  86         const AllSettings* pOldSettings = rDCEvt.GetOldSettings();
  87         if (!pOldSettings || aColor != pOldSettings->GetStyleSettings().GetFieldColor())
  88         {
  89             SetBackground(Wallpaper(aColor));
  90             Invalidate();
  91         }
  92     }
  93 }
  94
  95 void LineNumberWindow::DoScroll(long nHorzScroll, long nVertScroll)
  96 {
  97     m_nCurYOffset -= nVertScroll;
  98     Window::Scroll(nHorzScroll, nVertScroll);
  99 }
 100
 101 long& LineNumberWindow::GetCurYOffset()
 102 {
 103     return m_nCurYOffset;
 104 }
 105
 106 bool LineNumberWindow::SyncYOffset()
 107 {
 108     TextView* pView = m_pModulWindow->GetEditView();
 109     if (!pView)
 110         return false;
 111
 112     long nViewYOffset = pView->GetStartDocPos().Y();
 113     if (m_nCurYOffset == nViewYOffset)
 114         return false;
 115
 116     m_nCurYOffset = nViewYOffset;
 117     Invalidate();
 118     return true;
 119 }
 120
 121 int LineNumberWindow::GetWidth()
 122 {
 123     return m_nWidth;
 124 }
 125
 126 } // namespace basctl
 127
 128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */