+ fix: DPI Awareness & Fractional Font Size

res/Notepad3.exe.manifest

@@ -31,7 +31,13 @@
   </compatibility>
   <asmv3:application xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
     <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
-      <dpiAware>true</dpiAware>
+      <dpiAware>true/PM</dpiAware>
+    </asmv3:windowsSettings>
+    <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">
+      <dpiAwareness>PerMonitorV2,PerMonitor</dpiAwareness>
+    </asmv3:windowsSettings>
+    <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2017/WindowsSettings">
+      <gdiScaling>false</gdiScaling>
     </asmv3:windowsSettings>
   </asmv3:application>
 </assembly>

res/Notepad3.exe.manifest.conf

@@ -3,7 +3,7 @@
   <assemblyIdentity
     name="Notepad3"
     processorArchitecture="*"
-    version="4.18.607.1004"
+    version="4.18.802.1034"
     type="win32"
   />
   <description>Notepad3  X_MUI</description>

src/Dialogs.c

@@ -2239,6 +2239,7 @@ INT_PTR CALLBACK SelectDefEncodingDlgProc(HWND hwnd,UINT umsg,WPARAM wParam,LPAR
         if (g_hDlgIcon) { SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)g_hDlgIcon); }
 
         hbmp = LoadImage(g_hInstance,MAKEINTRESOURCE(IDB_ENCODING),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION);
+        hbmp = ResizeImageForCurrentDPI(hbmp);
 
         himl = ImageList_Create(16,16,ILC_COLOR32|ILC_MASK,0,0);
         ImageList_AddMasked(himl,hbmp,CLR_DEFAULT);
@@ -2364,6 +2365,8 @@ INT_PTR CALLBACK SelectEncodingDlgProc(HWND hwnd,UINT umsg,WPARAM wParam,LPARAM
         hwndLV = GetDlgItem(hwnd,IDC_ENCODINGLIST);
 
         hbmp = LoadImage(g_hInstance,MAKEINTRESOURCE(IDB_ENCODING),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION);
+        hbmp = ResizeImageForCurrentDPI(hbmp);
+
         himl = ImageList_Create(16,16,ILC_COLOR32|ILC_MASK,0,0);
         ImageList_AddMasked(himl,hbmp,CLR_DEFAULT);
         DeleteObject(hbmp);

src/Helpers.c

@@ -43,6 +43,7 @@
 extern HINSTANCE g_hInstance;
 extern HMODULE   g_hLngResContainer;
 extern LANGID    g_iPrefLngLocID;
+extern UINT      g_uCurrentDPI;
 
 //=============================================================================
 //
@@ -300,6 +301,70 @@ DWORD GetLastErrorToMsgBox(LPWSTR lpszFunction, DWORD dwErrID)
 }
 
 
+
+//=============================================================================
+//
+//  GetCurrentDPI()
+//
+UINT GetCurrentDPI(HWND hwnd) {
+  UINT dpi = 0;
+  if (IsWin10()) {
+    FARPROC pfnGetDpiForWindow = GetProcAddress(GetModuleHandle(L"user32.dll"), "GetDpiForWindow");
+    if (pfnGetDpiForWindow) {
+      dpi = (UINT)pfnGetDpiForWindow(hwnd);
+    }
+  }
+
+  if (dpi == 0 && IsWin81()) {
+    HMODULE hShcore = LoadLibrary(L"shcore.dll");
+    if (hShcore) {
+      FARPROC pfnGetDpiForMonitor = GetProcAddress(hShcore, "GetDpiForMonitor");
+      if (pfnGetDpiForMonitor) {
+        HMONITOR hMonitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
+        UINT dpiX = 0, dpiY = 0;
+        if (pfnGetDpiForMonitor(hMonitor, 0 /* MDT_EFFECTIVE_DPI */, &dpiX, &dpiY) == S_OK) {
+          dpi = dpiX;
+        }
+      }
+      FreeLibrary(hShcore);
+    }
+  }
+
+  if (dpi == 0) {
+    // FIXME: seems always get 96
+    HDC hDC = GetDC(hwnd);
+    dpi = GetDeviceCaps(hDC, LOGPIXELSX);
+    ReleaseDC(hwnd, hDC);
+  }
+
+  dpi = max(dpi, USER_DEFAULT_SCREEN_DPI);
+  return dpi;
+}
+
+
+
+//=============================================================================
+//
+//  ResizeImageForCurrentDPI()
+//
+HBITMAP ResizeImageForCurrentDPI(HBITMAP hbmp) 
+{
+  if (hbmp) {
+    BITMAP bmp;
+    if (g_uCurrentDPI > USER_DEFAULT_SCREEN_DPI && GetObject(hbmp, sizeof(BITMAP), &bmp)) {
+      int width = MulDiv(bmp.bmWidth, g_uCurrentDPI, USER_DEFAULT_SCREEN_DPI);
+      int height = MulDiv(bmp.bmHeight, g_uCurrentDPI, USER_DEFAULT_SCREEN_DPI);
+      HBITMAP hCopy = CopyImage(hbmp, IMAGE_BITMAP, width, height, LR_COPYRETURNORG | LR_COPYDELETEORG);
+      if (hCopy) {
+        hbmp = hCopy;
+      }
+    }
+  }
+  return hbmp;
+}
+
+
+
 //=============================================================================
 //
 //  PrivateIsAppThemed()
@@ -952,6 +1017,7 @@ void MakeBitmapButton(HWND hwnd,int nCtlId,HINSTANCE hInstance,UINT uBmpId)
   BITMAP bmp;
   BUTTON_IMAGELIST bi;
   HBITMAP hBmp = LoadImage(hInstance,MAKEINTRESOURCE(uBmpId),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION);
+  hBmp = ResizeImageForCurrentDPI(hBmp);
   GetObject(hBmp,sizeof(BITMAP),&bmp);
   bi.himl = ImageList_Create(bmp.bmWidth,bmp.bmHeight,ILC_COLOR32|ILC_MASK,1,0);
   ImageList_AddMasked(bi.himl,hBmp,CLR_DEFAULT);
@@ -962,6 +1028,7 @@ void MakeBitmapButton(HWND hwnd,int nCtlId,HINSTANCE hInstance,UINT uBmpId)
 }
 
 
+
 //=============================================================================
 //
 //  MakeColorPickButton()
@@ -1033,11 +1100,14 @@ void DeleteBitmapButton(HWND hwnd,int nCtlId)
 //
 //  SendWMSize()
 //
-LRESULT SendWMSize(HWND hwnd)
+LRESULT SendWMSize(HWND hwnd, RECT* rc)
 {
-  RECT rc; 
-  GetClientRect(hwnd, &rc);
-  return (SendMessage(hwnd, WM_SIZE, SIZE_RESTORED, MAKELPARAM(rc.right, rc.bottom)));
+  if (!rc) {
+    RECT _rc;
+    GetClientRect(hwnd, &_rc);
+    return (SendMessage(hwnd, WM_SIZE, SIZE_RESTORED, MAKELPARAM(_rc.right, _rc.bottom)));
+  }
+  return (SendMessage(hwnd, WM_SIZE, SIZE_RESTORED, MAKELPARAM(rc->right, rc->bottom)));
 }
 
 

src/Helpers.h

@@ -28,7 +28,6 @@
 
 extern WCHAR g_wchIniFile[MAX_PATH];
 
-
 // ============================================================================
 
 #define STRGFY(X)     L##(X)
@@ -132,6 +131,9 @@ DWORD GetLastErrorToMsgBox(LPWSTR lpszFunction, DWORD dwErrID);
 
 bool SetClipboardTextW(HWND, LPCWSTR);
 
+UINT GetCurrentDPI(HWND hwnd);
+HBITMAP ResizeImageForCurrentDPI(HBITMAP hbmp);
+
 bool PrivateIsAppThemed();
 HRESULT PrivateSetCurrentProcessExplicitAppUserModelID(PCWSTR);
 bool IsElevated();
@@ -174,7 +176,7 @@ LONG StatusCalcPaneWidth(HWND,LPCWSTR);
 int Toolbar_GetButtons(HWND,int,LPWSTR,int);
 int Toolbar_SetButtons(HWND,int,LPCWSTR,void*,int);
 
-LRESULT SendWMSize(HWND);
+LRESULT SendWMSize(HWND, RECT*);
 
 bool IsCmdEnabled(HWND, UINT);
 

src/Notepad3.c

@@ -67,6 +67,7 @@ HWND      g_hwndReBar = NULL;
 HWND      hwndEditFrame = NULL;
 HWND      hwndNextCBChain = NULL;
 HICON     g_hDlgIcon = NULL;
+UINT		  g_uCurrentDPI = USER_DEFAULT_SCREEN_DPI;
 
 bool g_bExternalBitmap = false;
 
@@ -1414,6 +1415,10 @@ LRESULT CALLBACK MainWndProc(HWND hwnd,UINT umsg,WPARAM wParam,LPARAM lParam)
       MsgThemeChanged(hwnd,wParam,lParam);
       break;
 
+    case WM_DPICHANGED:
+      MsgDPIChanged(hwnd, wParam, lParam);
+      break;
+
     // update Scintilla colors
     case WM_SYSCOLORCHANGE:
       UpdateLineNumberWidth();
@@ -1710,6 +1715,8 @@ LRESULT MsgCreate(HWND hwnd,WPARAM wParam,LPARAM lParam)
 
   HINSTANCE hInstance = ((LPCREATESTRUCT)lParam)->hInstance;
 
+  g_uCurrentDPI = GetCurrentDPI(hwnd);
+
   // Setup edit control
   g_hwndEdit = CreateWindowEx(
     WS_EX_CLIENTEDGE,
@@ -1870,6 +1877,7 @@ void CreateBars(HWND hwnd,HINSTANCE hInstance)
     if (!SearchPath(NULL,g_tchToolbarBitmap,L".bmp",COUNTOF(szTmp),szTmp,NULL))
       StringCchCopy(szTmp,COUNTOF(szTmp),g_tchToolbarBitmap);
     hbmp = LoadImage(NULL,szTmp,IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_LOADFROMFILE);
+    hbmp = ResizeImageForCurrentDPI(hbmp);
   }
 
   if (hbmp) {
@@ -1878,8 +1886,10 @@ void CreateBars(HWND hwnd,HINSTANCE hInstance)
   else {
     LPWSTR toolBarIntRes = (iHighDpiToolBar > 0) ? MAKEINTRESOURCE(IDR_MAINWNDTB2) : MAKEINTRESOURCE(IDR_MAINWNDTB);
     hbmp = LoadImage(hInstance, toolBarIntRes, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
+    hbmp = ResizeImageForCurrentDPI(hbmp);
     hbmpCopy = CopyImage(hbmp, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
   }
+
   GetObject(hbmp,sizeof(BITMAP),&bmp);
   if (!IsXP())
     BitmapMergeAlpha(hbmp,GetSysColor(COLOR_3DFACE));
@@ -1896,6 +1906,7 @@ void CreateBars(HWND hwnd,HINSTANCE hInstance)
       StringCchCopy(szTmp,COUNTOF(szTmp),g_tchToolbarBitmapHot);
 
     hbmp = LoadImage(NULL, szTmp, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_LOADFROMFILE);
+    hbmp = ResizeImageForCurrentDPI(hbmp);
     if (hbmp)
     {
       GetObject(hbmp,sizeof(BITMAP),&bmp);
@@ -1914,6 +1925,7 @@ void CreateBars(HWND hwnd,HINSTANCE hInstance)
       StringCchCopy(szTmp,COUNTOF(szTmp),g_tchToolbarBitmapDisabled);
 
     hbmp = LoadImage(NULL, szTmp, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_LOADFROMFILE);
+    hbmp = ResizeImageForCurrentDPI(hbmp);
     if (hbmp)
     {
       GetObject(hbmp,sizeof(BITMAP),&bmp);
@@ -2092,6 +2104,46 @@ void MsgEndSession(HWND hwnd, UINT umsg)
 }
 
 
+
+//=============================================================================
+//
+// MsgDPIChanged() - Handle WM_DPICHANGED
+//
+//
+void MsgDPIChanged(HWND hwnd, WPARAM wParam, LPARAM lParam) 
+{
+  g_uCurrentDPI = HIWORD(wParam);
+  DocPos const pos = SciCall_GetCurrentPos();
+
+  HINSTANCE hInstance = (HINSTANCE)(INT_PTR)GetWindowLongPtr(hwnd, GWLP_HINSTANCE);
+
+#if 0
+  char buf[64];
+  sprintf_s(buf, COUNTOF(buf), "WM_DPICHANGED: dpi=%u\n", g_uCurrentDPI);
+  SendMessage(g_hwndEdit, SCI_INSERTTEXT, 0, (LPARAM)buf);
+#endif
+
+  Style_ResetCurrentLexer(g_hwndEdit);
+  SciCall_GotoPos(pos);
+  
+  // recreate toolbar and statusbar
+  Toolbar_GetButtons(g_hwndToolbar, IDT_FILE_NEW, g_tchToolbarButtons, COUNTOF(g_tchToolbarButtons));
+
+  DestroyWindow(g_hwndToolbar);
+  DestroyWindow(g_hwndReBar);
+  DestroyWindow(g_hwndStatus);
+  CreateBars(hwnd, hInstance);
+
+  RECT* const rc = (RECT*)lParam;
+  SendWMSize(hwnd, rc);
+
+  UpdateUI();
+  UpdateToolbar();
+  UpdateStatusbar(true);
+  UpdateLineNumberWidth();
+}
+
+
 //=============================================================================
 //
 //  MsgThemeChanged() - Handle WM_THEMECHANGED
@@ -2147,7 +2199,7 @@ void MsgThemeChanged(HWND hwnd,WPARAM wParam,LPARAM lParam)
   DestroyWindow(g_hwndStatus);
   CreateBars(hwnd,hInstance);
 
-  SendWMSize(hwnd);
+  SendWMSize(hwnd, NULL);
 
   EditFinalizeStyling(g_hwndEdit, -1);
 
@@ -4816,7 +4868,7 @@ LRESULT MsgCommand(HWND hwnd, WPARAM wParam, LPARAM lParam)
         UpdateToolbar();
         ShowWindow(g_hwndReBar,SW_SHOW);
       }
-      SendWMSize(hwnd);
+      SendWMSize(hwnd, NULL);
       break;
 
 
@@ -4840,7 +4892,7 @@ LRESULT MsgCommand(HWND hwnd, WPARAM wParam, LPARAM lParam)
         UpdateStatusbar(false);
         ShowWindow(g_hwndStatus,SW_SHOW);
       }
-      SendWMSize(hwnd);
+      SendWMSize(hwnd, NULL);
       break;
 
 
@@ -8225,9 +8277,16 @@ void UpdateLineNumberWidth()
   else {
     SciCall_SetMarginWidthN(MARGIN_SCI_LINENUM, 0);
   }
+
+  int const widthBM = g_bShowSelectionMargin ? MulDiv(16, g_uCurrentDPI, USER_DEFAULT_SCREEN_DPI) : 0;
+  SciCall_SetMarginWidthN(MARGIN_SCI_BOOKMRK, widthBM);
+
+  int const widthCF = (g_bCodeFoldingAvailable && g_bShowCodeFolding) ? MulDiv(13, g_uCurrentDPI, USER_DEFAULT_SCREEN_DPI) : 0;
+  SciCall_SetMarginWidthN(MARGIN_SCI_FOLDING, widthCF);
 }
 
 
+
 //=============================================================================
 //
 //  UpdateSettingsCmds()

src/Notepad3.h

@@ -172,6 +172,7 @@ LRESULT MsgCreate(HWND, WPARAM, LPARAM);
 void    MsgEndSession(HWND, UINT);
 void    CreateBars(HWND, HINSTANCE);
 void    MsgThemeChanged(HWND, WPARAM, LPARAM);
+void    MsgDPIChanged(HWND, WPARAM, LPARAM);
 void    MsgSize(HWND, WPARAM, LPARAM);
 void    MsgDropFiles(HWND, WPARAM, LPARAM);
 LRESULT MsgCopyData(HWND, WPARAM, LPARAM);

src/Styles.c

@@ -50,6 +50,7 @@ extern HICON     g_hDlgIcon;
 extern HWND g_hwndMain;
 extern HWND g_hwndDlgCustomizeSchemes;
 extern EDITFINDREPLACE g_efrData;
+extern UINT g_uCurrentDPI;
 
 extern int g_iSciFontQuality;
 extern const int FontQuality[4];
@@ -5566,6 +5567,14 @@ bool Style_SelectColor(HWND hwnd,bool bForeGround,LPWSTR lpszStyle,int cchStyle,
 }
 
 
+//=============================================================================
+
+inline static int _GetDPIAwareFractFontSize(float fFontSize)
+{
+  return MulDiv((int)(fFontSize + 0.5), (SC_FONT_SIZE_MULTIPLIER * g_uCurrentDPI), USER_DEFAULT_SCREEN_DPI);
+}
+
+
 //=============================================================================
 //
 //  Style_SetStyles()
@@ -5631,13 +5640,10 @@ void Style_SetStyles(HWND hwnd, int iStyle, LPCWSTR lpszStyle, bool bInitDefault
   }
 
   // Size values are relative to BaseFontSize/CurrentFontSize
-  POINT dpi = GetSystemDpi();
   float  fBaseFontSize = _GetCurrentFontSize();
+  fBaseFontSize = (float)max(0.0, fBaseFontSize);
   if (Style_StrGetSize(lpszStyle, &fBaseFontSize)) {
-    fBaseFontSize = (float)max(0.0, fBaseFontSize);
-    fBaseFontSize = (float)MulDiv((int)fBaseFontSize, (dpi.x + dpi.y)/2, USER_DEFAULT_SCREEN_DPI);
-    //SendMessage(hwnd, SCI_STYLESETSIZE, iStyle, (int)fBaseFontSize);
-    SendMessage(hwnd, SCI_STYLESETSIZEFRACTIONAL, iStyle, (LPARAM)((int)(fBaseFontSize * SC_FONT_SIZE_MULTIPLIER + 0.5)));
+    SendMessage(hwnd, SCI_STYLESETSIZEFRACTIONAL, iStyle, (LPARAM)_GetDPIAwareFractFontSize(fBaseFontSize));
     if (iStyle == STYLE_DEFAULT) {
       if (bInitDefault) {
         _SetBaseFontSize(fBaseFontSize);
@@ -5647,7 +5653,7 @@ void Style_SetStyles(HWND hwnd, int iStyle, LPCWSTR lpszStyle, bool bInitDefault
   }
   else if (bInitDefault) {
     //SendMessage(hwnd, SCI_STYLESETSIZE, STYLE_DEFAULT, (LPARAM)((int)fBaseFontSize));
-    SendMessage(hwnd, SCI_STYLESETSIZEFRACTIONAL, STYLE_DEFAULT, (LPARAM)((int)(fBaseFontSize * SC_FONT_SIZE_MULTIPLIER + 0.5)));
+    SendMessage(hwnd, SCI_STYLESETSIZEFRACTIONAL, STYLE_DEFAULT, (LPARAM)_GetDPIAwareFractFontSize(fBaseFontSize));
   }
 
   // Character Set