From b7ad639fa6e576db2df04ce72e2b69f409f386bd Mon Sep 17 00:00:00 2001
From: zufuliu <zufuliu@gmail.com>
Date: Sat, 28 Jul 2018 20:58:57 +0800
Subject: [PATCH] Add "Rendering Technology" Settings menu to switch between
 GDI and Direct2D. See https://github.com/XhmikosR/notepad2-mod/issues/121,
 https://github.com/XhmikosR/notepad2-mod/pull/122,
 https://github.com/rizonesoft/Notepad3/issues/191 and
 https://github.com/XhmikosR/notepad2-mod/issues/228.

---
 src/Edit.c      |  2 ++
 src/Notepad2.c  | 18 ++++++++++++++++++
 src/Notepad2.rc |  7 +++++++
 src/resource.h  |  5 +++++
 4 files changed, 32 insertions(+)

diff --git a/src/Edit.c b/src/Edit.c
index 1e104ce766..e1bb3b8806 100644
--- a/src/Edit.c
+++ b/src/Edit.c
@@ -51,6 +51,7 @@ extern int iLineEndings[3];
 extern BOOL bFixLineEndings;
 extern BOOL bAutoStripBlanks;
 
+extern int iRenderingTechnology;
 // Default Codepage and Character Set
 extern int iDefaultCodePage;
 //extern int iDefaultCharSet;
@@ -82,6 +83,7 @@ HWND EditCreate(HWND hwndParent) {
 						  g_hInstance,
 						  NULL);
 
+	SendMessage(hwnd, SCI_SETTECHNOLOGY, iRenderingTechnology, 0);
 	SendMessage(hwnd, SCI_SETCODEPAGE, iDefaultCodePage, 0);
 	SendMessage(hwnd, SCI_SETEOLMODE, SC_EOL_CRLF, 0);
 	SendMessage(hwnd, SCI_SETPASTECONVERTENDINGS, 1, 0);
diff --git a/src/Notepad2.c b/src/Notepad2.c
index db62e76bb6..ecbbc61ddb 100644
--- a/src/Notepad2.c
+++ b/src/Notepad2.c
@@ -178,6 +178,7 @@ int		iEscFunction;
 BOOL	bAlwaysOnTop;
 BOOL	bMinimizeToTray;
 BOOL	bTransparentMode;
+int		iRenderingTechnology;
 BOOL	bShowToolbar;
 BOOL	bShowStatusbar;
 
@@ -1421,6 +1422,8 @@ LRESULT MsgCreate(HWND hwnd, WPARAM wParam, LPARAM lParam) {
 	hwndEdit = EditCreate(hwnd);
 	InitScintillaHandle(hwndEdit);
 
+	iRenderingTechnology = (int)SendMessage(hwndEdit, SCI_GETTECHNOLOGY, 0, 0);
+
 	SendMessage(hwndEdit, SCI_SETZOOM, iZoomLevel, 0);
 	// Tabs
 	SendMessage(hwndEdit, SCI_SETUSETABS, !bTabsAsSpaces, 0);
@@ -2249,6 +2252,9 @@ void MsgInitMenu(HWND hwnd, WPARAM wParam, LPARAM lParam) {
 	CheckCmd(hmenu, IDM_VIEW_TRANSPARENT, bTransparentMode && i);
 	EnableCmd(hmenu, IDM_VIEW_TRANSPARENT, i);
 
+	i = IDM_SET_RENDER_TECH_DEFAULT + iRenderingTechnology;
+	CheckMenuRadioItem(hmenu, IDM_SET_RENDER_TECH_DEFAULT, IDM_SET_RENDER_TECH_D2DDC, i, MF_BYCOMMAND);
+
 	CheckCmd(hmenu, IDM_VIEW_NOSAVERECENT, bSaveRecentFiles);
 	CheckCmd(hmenu, IDM_VIEW_NOSAVEFINDREPL, bSaveFindReplace);
 	CheckCmd(hmenu, IDM_VIEW_SAVEBEFORERUNNINGTOOLS, bSaveBeforeRunningTools);
@@ -4122,6 +4128,14 @@ LRESULT MsgCommand(HWND hwnd, WPARAM wParam, LPARAM lParam) {
 		SetWindowTransparentMode(hwnd, bTransparentMode);
 		break;
 
+	case IDM_SET_RENDER_TECH_DEFAULT:
+	case IDM_SET_RENDER_TECH_D2D:
+	case IDM_SET_RENDER_TECH_D2DRETAIN:
+	case IDM_SET_RENDER_TECH_D2DDC:
+		SendMessage(hwndEdit, SCI_SETTECHNOLOGY, LOWORD(wParam) - IDM_SET_RENDER_TECH_DEFAULT, 0);
+		iRenderingTechnology = (int)SendMessage(hwndEdit, SCI_GETTECHNOLOGY, 0, 0);
+		break;
+
 	case IDM_VIEW_SHOWFILENAMEONLY:
 		iPathNameFormat = 0;
 		lstrcpy(szTitleExcerpt, L"");
@@ -5333,6 +5347,9 @@ void LoadSettings(void) {
 	bMinimizeToTray = IniSectionGetBool(pIniSection, L"MinimizeToTray", 0);
 	bTransparentMode = IniSectionGetBool(pIniSection, L"TransparentMode", 0);
 
+	iRenderingTechnology = IniSectionGetInt(pIniSection, L"RenderingTechnology", 0);
+	iRenderingTechnology = clamp_i(iRenderingTechnology, SC_TECHNOLOGY_DEFAULT, SC_TECHNOLOGY_DIRECTWRITEDC);
+
 	IniSectionGetString(pIniSection, L"ToolbarButtons", L"", tchToolbarButtons, COUNTOF(tchToolbarButtons));
 
 	bShowToolbar = IniSectionGetBool(pIniSection, L"ShowToolbar", 1);
@@ -5562,6 +5579,7 @@ void SaveSettings(BOOL bSaveSettingsNow) {
 	IniSectionSetBool(pIniSection, L"AlwaysOnTop", bAlwaysOnTop);
 	IniSectionSetBool(pIniSection, L"MinimizeToTray", bMinimizeToTray);
 	IniSectionSetBool(pIniSection, L"TransparentMode", bTransparentMode);
+	IniSectionSetInt(pIniSection, L"RenderingTechnology", iRenderingTechnology);
 	Toolbar_GetButtons(hwndToolbar, IDT_FILE_NEW, tchToolbarButtons, COUNTOF(tchToolbarButtons));
 	IniSectionSetString(pIniSection, L"ToolbarButtons", tchToolbarButtons);
 	IniSectionSetBool(pIniSection, L"ShowToolbar", bShowToolbar);
diff --git a/src/Notepad2.rc b/src/Notepad2.rc
index 88f1894b32..306ebe5c93 100644
--- a/src/Notepad2.rc
+++ b/src/Notepad2.rc
@@ -454,6 +454,13 @@ BEGIN
         MENUITEM "&Always On Top\tAlt+Shift+T", IDM_VIEW_ALWAYSONTOP
         MENUITEM "Minimi&ze to Tray",           IDM_VIEW_MINTOTRAY
         MENUITEM "Transparent &Mode\tCtrl+0",   IDM_VIEW_TRANSPARENT
+        POPUP "Rendering Technology"
+        BEGIN
+            MENUITEM "Default GDI",     IDM_SET_RENDER_TECH_DEFAULT
+            MENUITEM "Direct2D",        IDM_SET_RENDER_TECH_D2D
+            MENUITEM "Direct2D Retain", IDM_SET_RENDER_TECH_D2DRETAIN
+            MENUITEM "Direct2D GDI DC", IDM_SET_RENDER_TECH_D2DDC
+        END
         MENUITEM SEPARATOR
         MENUITEM "Single &File Instance",       IDM_VIEW_SINGLEFILEINSTANCE
         MENUITEM "File &Change Notification...\tAlt+F5", IDM_VIEW_CHANGENOTIFY
diff --git a/src/resource.h b/src/resource.h
index 9cb363e134..e811c5d3da 100644
--- a/src/resource.h
+++ b/src/resource.h
@@ -403,6 +403,11 @@
 #define IDM_VIEW_AUTOCWITHDOCWORDS		40466
 #define IDM_VIEW_FOLD_CURRENT			40467	// Alt+C
 #define IDM_VIEW_SHOWCALLTIPS			40047
+#define IDM_SET_RENDER_TECH_DEFAULT		40048
+#define IDM_SET_RENDER_TECH_D2D			40049
+#define IDM_SET_RENDER_TECH_D2DRETAIN	40050
+#define IDM_SET_RENDER_TECH_D2DDC		40051
+
 #define IDM_LANG_DEFAULT				41000
 #define IDM_LANG_NULL					41060