[PATCH v7 2/2] notepad: Track and display line number and column.

[Jacob Czekalla]

From: Jacob Czekalla

---
 programs/notepad/main.c        | 59 +++++++++++++++++++++++++++++++++-
 programs/notepad/main.h        |  6 ++++
 programs/notepad/notepad.rc    |  2 ++
 programs/notepad/notepad_res.h |  2 ++
 4 files changed, 68 insertions(+), 1 deletion(-)

diff --git a/programs/notepad/main.c b/programs/notepad/main.c
index 3d266a322e8..3387e044274 100644
--- a/programs/notepad/main.c
+++ b/programs/notepad/main.c
@@ -108,6 +108,33 @@ DWORD get_dpi(void)
     return dpi;
 }

+void UpdateStatusBar(void)
+{
+    int currentLine;
+    int currentCol = -1;
+    WCHAR statusTxt[256];
+    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);
+    if(Globals.lastLn != currentLine || Globals.lastCol != currentCol)
+    {
+        swprintf(statusTxt, ARRAY_SIZE(statusTxt), Globals.szStatusString, currentLine + 1, (currentCol - lineIndex) + 1);
+        SendMessageW(Globals.hStatusBar, SB_SETTEXTW, 0, (LPARAM)statusTxt);
+        Globals.lastLn = currentLine;
+        Globals.lastCol = currentCol;
+    }
+}
+
 static void ToggleStatusBar(void)
 {
     RECT rc;
@@ -118,6 +145,7 @@ static void ToggleStatusBar(void)
     GetClientRect(Globals.hMainWnd, &rc);
     ShowWindow(Globals.hStatusBar, Globals.bStatusBar);
     updateWindowSize(rc.right, rc.bottom);
+    UpdateStatusBar();
 }

void updateWindowSize(int width, int height)
@@ -389,7 +417,7 @@ static VOID NOTEPAD_InitMenuPopup(HMENU menu, int index)
     EnableMenuItem(menu, CMD_CUT, enable);
     EnableMenuItem(menu, CMD_COPY, enable);
     EnableMenuItem(menu, CMD_DELETE, enable);
-    
+
     EnableMenuItem(menu, CMD_SELECT_ALL,
         GetWindowTextLengthW(Globals.hEdit) ? MF_ENABLED : MF_GRAYED);
 }
@@ -528,6 +556,30 @@ 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 +627,17 @@ 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);
+        Globals.lastLn = -1;
+        Globals.lastCol = -1;
+        UpdateStatusBar();
         break;
     }

diff --git a/programs/notepad/main.h b/programs/notepad/main.h
index 7f417789001..111e76d7d65 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 +62,9 @@ typedef struct
   INT      iMarginRight;
   WCHAR    szHeader[MAX_PATH];
   WCHAR    szFooter[MAX_PATH];
+  INT      trackedSel;
+  INT      lastLn;
+  INT      lastCol;

FINDREPLACEW find;
   FINDREPLACEW lastFind;
@@ -73,4 +77,6 @@ extern NOTEPAD_GLOBALS Globals;
 VOID SetFileNameAndEncoding(LPCWSTR szFileName, ENCODING enc);
 void NOTEPAD_DoFind(FINDREPLACEW *fr);
 DWORD get_dpi(void);
+void UpdateStatusBar(void);
 void updateWindowSize(int width, int height);
+LRESULT CALLBACK EDIT_CallBackProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
\ No newline at end of file
diff --git a/programs/notepad/notepad.rc b/programs/notepad/notepad.rc
index 60cd03d9c0e..323ccd2afae 100644
--- a/programs/notepad/notepad.rc
+++ b/programs/notepad/notepad.rc
@@ -85,6 +85,8 @@ STRING_NOTSAVED,                                "File '%s' has been modified.\n\
 Would you like to save the changes?"
 STRING_NOTFOUND,                                        "'%s' could not be found."

++STRING_STATUSBAR,      "Ln %ld, Col %ld"
+
 STRING_UNICODE_LE,     "Unicode (UTF-16)"
 STRING_UNICODE_BE,     "Unicode (UTF-16 big-endian)"
 STRING_UTF8,           "Unicode (UTF-8)"
diff --git a/programs/notepad/notepad_res.h b/programs/notepad/notepad_res.h
index bd994d9eede..416d6d775fd 100644
--- a/programs/notepad/notepad_res.h
+++ b/programs/notepad/notepad_res.h
@@ -79,6 +79,8 @@

#define STRING_NOTFOUND 0x17B

+#define STRING_STATUSBAR       0x206
+
 #define STRING_UNICODE_LE      0x180
 #define STRING_UNICODE_BE      0x181
 #define STRING_UTF8            0x182