src/TortoiseMerge/LineDiffBar.cpp

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