src/TortoiseMerge/LineDiffBar.cpp

   1 // TortoiseGitMerge - a Diff/Patch program
   2
   3 // Copyright (C) 2006-2008, 2010 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #include "stdafx.h"
  20 #include "TortoiseMerge.h"
  21 #include "MainFrm.h"
  22 #include "LocatorBar.h"
  23 #include "LeftView.h"
  24 #include "RightView.h"
  25 #include "BottomView.h"
  26
  27 IMPLEMENT_DYNAMIC(CLineDiffBar, CPaneDialog)
  28 CLineDiffBar::CLineDiffBar() : CPaneDialog()
  29 {
  30         m_pMainFrm = NULL;
  31         m_pCacheBitmap = NULL;
  32         m_nLineIndex = -1;
  33         m_nLineHeight = 0;
  34         m_bExclusiveRow = TRUE;
  35 }
  36
  37 CLineDiffBar::~CLineDiffBar()
  38 {
  39         if (m_pCacheBitmap)
  40         {
  41                 m_pCacheBitmap->DeleteObject();
  42                 delete m_pCacheBitmap;
  43                 m_pCacheBitmap = NULL;
  44         }
  45 }
  46
  47 BEGIN_MESSAGE_MAP(CLineDiffBar, CPaneDialog)
  48         ON_WM_PAINT()
  49         ON_WM_SIZE()
  50         ON_WM_ERASEBKGND()
  51 END_MESSAGE_MAP()
  52
  53 void CLineDiffBar::DocumentUpdated()
  54 {
  55         //resize according to the font size
  56         if ((m_pMainFrm)&&(m_pMainFrm->m_pwndLeftView))
  57         {
  58                 m_nLineHeight = m_pMainFrm->m_pwndLeftView->GetLineHeight();
  59         }
  60         CRect rect;
  61         GetWindowRect(rect);
  62         CSize size = rect.Size();
  63         size.cy = 2 * m_nLineHeight;
  64         SetMinSize(size);
  65         SetWindowPos(NULL, 0, 0, size.cx, 2*m_nLineHeight, SWP_NOMOVE);
  66         RecalcLayout();
  67         if (m_pMainFrm)
  68                 m_pMainFrm->RecalcLayout();
  69 }
  70
  71 void CLineDiffBar::ShowLines(int nLineIndex)
  72 {
  73         m_nLineIndex = nLineIndex;
  74         Invalidate();
  75 }
  76
  77 void CLineDiffBar::OnPaint()
  78 {
  79         CPaintDC dc(this); // device context for painting
  80         CRect rect;
  81         GetClientRect(rect);
  82         int height = rect.Height();
  83         int width = rect.Width();
  84
  85         CDC cacheDC;
  86         VERIFY(cacheDC.CreateCompatibleDC(&dc));
  87         cacheDC.FillSolidRect(&rect, ::GetSysColor(COLOR_WINDOW));
  88         if (m_pCacheBitmap == NULL)
  89         {
  90                 m_pCacheBitmap = new CBitmap;
  91                 VERIFY(m_pCacheBitmap->CreateCompatibleBitmap(&dc, width, height));
  92         }
  93         CBitmap *pOldBitmap = cacheDC.SelectObject(m_pCacheBitmap);
  94
  95         CRect upperrect = CRect(rect.left, rect.top, rect.right, rect.bottom/2);
  96         CRect lowerrect = CRect(rect.left, rect.bottom/2, rect.right, rect.bottom);
  97
  98         if (m_pMainFrm!=0)
  99         {
 100                 CLeftView* leftView = m_pMainFrm->m_pwndLeftView;
 101                 CRightView* rightView = m_pMainFrm->m_pwndRightView;
 102                 if (CBaseView::IsViewGood(leftView)&&CBaseView::IsViewGood(rightView))
 103                 {
 104                         BOOL bViewWhiteSpace = leftView->m_bViewWhitespace;
 105                         BOOL bInlineDiffs = leftView->m_bShowInlineDiff;
 106
 107                         leftView->m_bViewWhitespace = TRUE;
 108                         leftView->m_bShowInlineDiff = TRUE;
 109                         leftView->m_bWhitespaceInlineDiffs = true;
 110                         leftView->m_bShowSelection = false;
 111                         rightView->m_bViewWhitespace = TRUE;
 112                         rightView->m_bShowInlineDiff = TRUE;
 113                         rightView->m_bWhitespaceInlineDiffs = true;
 114                         rightView->m_bShowSelection = false;
 115
 116                         // Use left and right view to display lines next to each other
 117                         leftView->DrawSingleLine(&cacheDC, &upperrect, m_nLineIndex);
 118                         rightView->DrawSingleLine(&cacheDC, &lowerrect, m_nLineIndex);
 119
 120                         leftView->m_bViewWhitespace = bViewWhiteSpace;
 121                         leftView->m_bShowInlineDiff = bInlineDiffs;
 122                         leftView->m_bWhitespaceInlineDiffs = false;
 123                         leftView->m_bShowSelection = true;
 124                         rightView->m_bViewWhitespace = bViewWhiteSpace;
 125                         rightView->m_bShowInlineDiff = bInlineDiffs;
 126                         rightView->m_bWhitespaceInlineDiffs = false;
 127                         rightView->m_bShowSelection = true;
 128                 }
 129         }
 130
 131         VERIFY(dc.BitBlt(rect.left, rect.top, width, height, &cacheDC, 0, 0, SRCCOPY));
 132
 133         cacheDC.SelectObject(pOldBitmap);
 134         cacheDC.DeleteDC();
 135 }
 136
 137 void CLineDiffBar::OnSize(UINT nType, int cx, int cy)
 138 {
 139         CPaneDialog::OnSize(nType, cx, cy);
 140
 141         if (m_pCacheBitmap != NULL)
 142         {
 143                 m_pCacheBitmap->DeleteObject();
 144                 delete m_pCacheBitmap;
 145                 m_pCacheBitmap = NULL;
 146         }
 147         SetWindowPos(NULL, 0, 0, cx, 2*m_nLineHeight, SWP_NOMOVE);
 148         Invalidate();
 149 }
 150
 151 BOOL CLineDiffBar::OnEraseBkgnd(CDC* /*pDC*/)
 152 {
 153         return TRUE;
 154 }