src/TortoiseMerge/LineDiffBar.cpp

   1 // TortoiseGitMerge - a Diff/Patch program
   2
   3 // Copyright (C) 2023 - TortoiseGit
   4 // Copyright (C) 2006-2008, 2010 - TortoiseSVN
   5
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 #include "stdafx.h"
  21 #include "TortoiseMerge.h"
  22 #include "MainFrm.h"
  23 #include "LocatorBar.h"
  24 #include "LeftView.h"
  25 #include "RightView.h"
  26 #include "BottomView.h"
  27
  28 IMPLEMENT_DYNAMIC(CLineDiffBar, CPaneDialog)
  29 CLineDiffBar::CLineDiffBar() : CPaneDialog()
  30 {
  31         m_bExclusiveRow = TRUE;
  32 }
  33
  34 CLineDiffBar::~CLineDiffBar()
  35 {
  36         if (m_pCacheBitmap)
  37         {
  38                 m_pCacheBitmap->DeleteObject();
  39                 delete m_pCacheBitmap;
  40                 m_pCacheBitmap = nullptr;
  41         }
  42 }
  43
  44 BEGIN_MESSAGE_MAP(CLineDiffBar, CPaneDialog)
  45         ON_WM_PAINT()
  46         ON_WM_SIZE()
  47         ON_WM_ERASEBKGND()
  48 END_MESSAGE_MAP()
  49
  50 void CLineDiffBar::DocumentUpdated()
  51 {
  52         //resize according to the font size
  53         if ((m_pMainFrm)&&(m_pMainFrm->m_pwndLeftView))
  54         {
  55                 m_nLineHeight = m_pMainFrm->m_pwndLeftView->GetLineHeight();
  56         }
  57         CRect rect;
  58         GetWindowRect(rect);
  59         CSize size = rect.Size();
  60         size.cy = 2 * m_nLineHeight;
  61         SetMinSize(size);
  62         SetWindowPos(nullptr, 0, 0, size.cx, 2 * m_nLineHeight, SWP_NOMOVE);
  63         RecalcLayout();
  64         if (m_pMainFrm)
  65                 m_pMainFrm->RecalcLayout();
  66 }
  67
  68 void CLineDiffBar::ShowLines(int nLineIndex)
  69 {
  70         m_nLineIndex = nLineIndex;
  71         Invalidate();
  72 }
  73
  74 void CLineDiffBar::OnPaint()
  75 {
  76         CPaintDC dc(this); // device context for painting
  77         CRect rect;
  78         GetClientRect(rect);
  79         int height = rect.Height();
  80         int width = rect.Width();
  81
  82         CDC cacheDC;
  83         VERIFY(cacheDC.CreateCompatibleDC(&dc));
  84         cacheDC.FillSolidRect(&rect, ::GetSysColor(COLOR_WINDOW));
  85         if (!m_pCacheBitmap)
  86         {
  87                 m_pCacheBitmap = new CBitmap;
  88                 VERIFY(m_pCacheBitmap->CreateCompatibleBitmap(&dc, width, height));
  89         }
  90         CBitmap *pOldBitmap = cacheDC.SelectObject(m_pCacheBitmap);
  91
  92         CRect upperrect = CRect(rect.left, rect.top, rect.right, rect.bottom/2);
  93         CRect lowerrect = CRect(rect.left, rect.bottom/2, rect.right, rect.bottom);
  94
  95         if (m_pMainFrm!=0)
  96         {
  97                 CLeftView* leftView = m_pMainFrm->m_pwndLeftView;
  98                 CRightView* rightView = m_pMainFrm->m_pwndRightView;
  99                 if (CBaseView::IsViewGood(leftView)&&CBaseView::IsViewGood(rightView))
 100                 {
 101                         BOOL bViewWhiteSpace = leftView->m_bViewWhitespace;
 102                         BOOL bInlineDiffs = leftView->m_bShowInlineDiff;
 103
 104                         leftView->m_bViewWhitespace = TRUE;
 105                         leftView->m_bShowInlineDiff = TRUE;
 106                         leftView->m_bWhitespaceInlineDiffs = true;
 107                         leftView->m_bShowSelection = false;
 108                         rightView->m_bViewWhitespace = TRUE;
 109                         rightView->m_bShowInlineDiff = TRUE;
 110                         rightView->m_bWhitespaceInlineDiffs = true;
 111                         rightView->m_bShowSelection = false;
 112
 113                         // Use left and right view to display lines next to each other
 114                         leftView->DrawSingleLine(&cacheDC, &upperrect, m_nLineIndex);
 115                         rightView->DrawSingleLine(&cacheDC, &lowerrect, m_nLineIndex);
 116
 117                         leftView->m_bViewWhitespace = bViewWhiteSpace;
 118                         leftView->m_bShowInlineDiff = bInlineDiffs;
 119                         leftView->m_bWhitespaceInlineDiffs = false;
 120                         leftView->m_bShowSelection = true;
 121                         rightView->m_bViewWhitespace = bViewWhiteSpace;
 122                         rightView->m_bShowInlineDiff = bInlineDiffs;
 123                         rightView->m_bWhitespaceInlineDiffs = false;
 124                         rightView->m_bShowSelection = true;
 125                 }
 126         }
 127
 128         VERIFY(dc.BitBlt(rect.left, rect.top, width, height, &cacheDC, 0, 0, SRCCOPY));
 129
 130         cacheDC.SelectObject(pOldBitmap);
 131         cacheDC.DeleteDC();
 132 }
 133
 134 void CLineDiffBar::OnSize(UINT nType, int cx, int cy)
 135 {
 136         CPaneDialog::OnSize(nType, cx, cy);
 137
 138         if (m_pCacheBitmap)
 139         {
 140                 m_pCacheBitmap->DeleteObject();
 141                 delete m_pCacheBitmap;
 142                 m_pCacheBitmap = nullptr;
 143         }
 144         SetWindowPos(nullptr, 0, 0, cx, 2 * m_nLineHeight, SWP_NOMOVE);
 145         Invalidate();
 146 }
 147
 148 BOOL CLineDiffBar::OnEraseBkgnd(CDC* /*pDC*/)
 149 {
 150         return TRUE;
 151 }