[PATCH v6 2/2] Track and display line number and column.

[Jacob Czekalla]

From: Jacob Czekalla

---
 programs/notepad/main.c        | 51 ++++++++++++++++++++++++++++++++++
 programs/notepad/main.h        |  3 ++
 programs/notepad/notepad.rc    |  2 ++
 programs/notepad/notepad_res.h |  2 ++
 4 files changed, 58 insertions(+)

diff --git a/programs/notepad/main.c b/programs/notepad/main.c
index f243ac0c775..3526f68b49e 100644
--- a/programs/notepad/main.c
+++ b/programs/notepad/main.c
@@ -108,6 +108,29 @@ DWORD get_dpi(void)
     return dpi;
 }

+void UpdateStatusBar(void)
+{
+    int currentLine;
+    int currentCol = -1;
+    wchar_t statusTxt[25];
+    int lineIndex;
+    DWORD selStart;
+    DWORD selEnd;
+
+    SendMessageW(Globals.hEdit,EM_GETSEL, (WPARAM)&selStart, (LPARAM)&selEnd);
+    if(selStart == selEnd)
+        Globals.trackedSel = selStart;
+    if(selStart < Globals.trackedSel)
+        currentCol = selStart;
+    else
+        currentCol = selEnd;
+    currentLine = SendMessageW(Globals.hEdit, EM_LINEFROMCHAR, currentCol,0);
+    lineIndex = SendMessageW(Globals.hEdit, EM_LINEINDEX, currentLine,0);
+
+    swprintf(statusTxt, 25, Globals.szStatusString,currentLine+1, (currentCol+1) - lineIndex);
+    SendMessageW(Globals.hStatusBar, SB_SETTEXTW, 0, (LPARAM)statusTxt);
+}
+
 static void ToggleStatusBar(void)
 {
     RECT rc;
@@ -118,6 +141,7 @@ static void ToggleStatusBar(void)
     GetClientRect(Globals.hMainWnd, &rc);
     ShowWindow(Globals.hStatusBar,Globals.bStatusBar);
     updateWindowSize(MAKELPARAM(rc.right,rc.bottom));
+    UpdateStatusBar();
 }

void updateWindowSize(DWORD WidthHeight)
@@ -528,6 +552,29 @@ static void NOTEPAD_DoReplaceAll(FINDREPLACEW *fr)
     }
 }

+LRESULT CALLBACK EDIT_CallBackProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    switch (msg)
+    {
+        case WM_KEYDOWN:
+        case WM_KEYUP:
+        case WM_MBUTTONDOWN:
+        case WM_MBUTTONUP:
+        case WM_LBUTTONDOWN:
+        case WM_LBUTTONUP:
+            UpdateStatusBar();
+            break;
+        case WM_MOUSEMOVE:
+            if(wParam == MK_LBUTTON)
+                UpdateStatusBar();
+            break;
+
+        default:
+            break;
+    }
+    return DefSubclassProc(hWnd, msg, wParam, lParam);
+}
+
 /***********************************************************************
  *
  *           NOTEPAD_WndProc
@@ -575,12 +622,16 @@ static LRESULT WINAPI NOTEPAD_WndProc(HWND hWnd, UINT msg, WPARAM wParam,
                              dwStyle, 0, 0, rc.right, rc.bottom, hWnd,
                              NULL, Globals.hInstance, NULL);

+        SetWindowSubclass(Globals.hEdit, (SUBCLASSPROC)&EDIT_CallBackProc, 0, 0);
         Globals.hFont = CreateFontIndirectW(&Globals.lfFont);
         SendMessageW(Globals.hEdit, WM_SETFONT, (WPARAM)Globals.hFont, FALSE);
         SendMessageW(Globals.hEdit, EM_LIMITTEXT, 0, 0);
         Globals.hStatusBar = CreateWindowExW(0, STATUSCLASSNAMEW,NULL,
                                  WS_VISIBLE | WS_CHILD, 0, 0, 0, 0, hWnd, NULL,
                                  Globals.hInstance, NULL);
+
+        LoadStringW(Globals.hInstance, STRING_STATUSBAR, (LPWSTR)&Globals.szStatusString, 0);
+        UpdateStatusBar();
         break;
     }

diff --git a/programs/notepad/main.h b/programs/notepad/main.h
index 330af03fb6e..bd8980a9dcc 100644
--- a/programs/notepad/main.h
+++ b/programs/notepad/main.h
@@ -45,6 +45,7 @@ typedef struct
   HFONT    hFont; /* Font used by the edit control */
   HWND     hStatusBar;
   INT      bStatusBar;
+  WCHAR*   szStatusString;
   LOGFONTW lfFont;
   BOOL     bWrapLongLines;
   WCHAR    szFindText[MAX_PATH];
@@ -61,6 +62,7 @@ typedef struct
   INT      iMarginRight;
   WCHAR    szHeader[MAX_PATH];
   WCHAR    szFooter[MAX_PATH];
+  INT      trackedSel;

FINDREPLACEW find;
   FINDREPLACEW lastFind;
@@ -73,4 +75,5 @@ extern NOTEPAD_GLOBALS Globals;
 VOID SetFileNameAndEncoding(LPCWSTR szFileName, ENCODING enc);
 void NOTEPAD_DoFind(FINDREPLACEW *fr);
 DWORD get_dpi(void);
+void UpdateStatusBar(void);
 void updateWindowSize(DWORD WidthHeight);
diff --git a/programs/notepad/notepad.rc b/programs/notepad/notepad.rc
index 60cd03d9c0e..20257164e33 100644
--- a/programs/notepad/notepad.rc
+++ b/programs/notepad/notepad.rc
@@ -89,6 +89,8 @@ STRING_UNICODE_LE,     "Unicode (UTF-16)"
 STRING_UNICODE_BE,     "Unicode (UTF-16 big-endian)"
 STRING_UTF8,           "Unicode (UTF-8)"

+STRING_STATUSBAR,      "Ln %ld, Col %ld"
+
 STRING_LOSS_OF_UNICODE_CHARACTERS,         "%1\n\
 This file contains Unicode characters which will be lost if\n\
 you save this file in the %2 encoding.\n\
diff --git a/programs/notepad/notepad_res.h b/programs/notepad/notepad_res.h
index bd994d9eede..e84224384ee 100644
--- a/programs/notepad/notepad_res.h
+++ b/programs/notepad/notepad_res.h
@@ -83,6 +83,8 @@
 #define STRING_UNICODE_BE      0x181
 #define STRING_UTF8            0x182

+#define STRING_STATUSBAR       0x206
+
 #define STRING_LOSS_OF_UNICODE_CHARACTERS 0x183

/* Open/Save As dialog template */