From 9ee6cc3f771567b4f616d632ff4dda72ffa9e8af Mon Sep 17 00:00:00 2001
From: RocketRobz <bobesh8@gmail.com>
Date: Wed, 25 Nov 2020 20:33:20 -0700
Subject: [PATCH] Add `SCREENSWAP` compilation flag

---
 arm9/source/driveMenu.cpp   |  8 ++++++++
 arm9/source/file_browse.cpp | 35 +++++++++++++++++++++++++++++++++--
 arm9/source/main.cpp        |  3 +++
 arm9/source/main.h          |  3 +++
 4 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/arm9/source/driveMenu.cpp b/arm9/source/driveMenu.cpp
index b1ccc09..cf1bce1 100644
--- a/arm9/source/driveMenu.cpp
+++ b/arm9/source/driveMenu.cpp
@@ -447,6 +447,14 @@ void driveMenu (void) {
 			}
 		}
 
+#ifdef SCREENSWAP
+		// Swap screens
+		if (pressed & KEY_TOUCH) {
+			screenSwapped = !screenSwapped;
+			screenSwapped ? lcdMainOnBottom() : lcdMainOnTop();
+		}
+#endif
+
 		// Make a screenshot
 		if ((held & KEY_R) && (pressed & KEY_L)) {
 			if (sdMounted || flashcardMounted) {
diff --git a/arm9/source/file_browse.cpp b/arm9/source/file_browse.cpp
index f237f82..91caba4 100644
--- a/arm9/source/file_browse.cpp
+++ b/arm9/source/file_browse.cpp
@@ -266,7 +266,11 @@ FileOperation fileBrowse_A(DirEntry* entry, char path[PATH_MAX]) {
 			pressed = keysDownRepeat();
 			swiWaitForVBlank();
 		} while (!(pressed & KEY_UP) && !(pressed & KEY_DOWN)
-				&& !(pressed & KEY_A) && !(pressed & KEY_B));
+				&& !(pressed & KEY_A) && !(pressed & KEY_B)
+#ifdef SCREENSWAP
+				&& !(pressed & KEY_TOUCH)
+#endif
+				);
 
 		consoleSelect(&bottomConsole);
 		printf ("\x1B[47m");		// Print foreground white color
@@ -379,6 +383,13 @@ FileOperation fileBrowse_A(DirEntry* entry, char path[PATH_MAX]) {
 		if (pressed & KEY_B) {
 			return FileOperation::none;
 		}
+#ifdef SCREENSWAP
+		// Swap screens
+		if (pressed & KEY_TOUCH) {
+			screenSwapped = !screenSwapped;
+			screenSwapped ? lcdMainOnBottom() : lcdMainOnTop();
+		}
+#endif
 	}
 }
 
@@ -427,7 +438,12 @@ bool fileBrowse_paste(char dest[256]) {
 			pressed = keysDownRepeat();
 			swiWaitForVBlank();
 		} while (!(pressed & KEY_UP) && !(pressed & KEY_DOWN)
-				&& !(pressed & KEY_A) && !(pressed & KEY_B));
+				&& !(pressed & KEY_A) && !(pressed & KEY_B)
+#ifdef SCREENSWAP
+				&& !(pressed & KEY_TOUCH)
+#endif
+				);
+
 
 		consoleSelect(&bottomConsole);
 		printf ("\x1B[47m");		// Print foreground white color
@@ -465,6 +481,13 @@ bool fileBrowse_paste(char dest[256]) {
 		if (pressed & KEY_B) {
 			return false;
 		}
+#ifdef SCREENSWAP
+		// Swap screens
+		if (pressed & KEY_TOUCH) {
+			screenSwapped = !screenSwapped;
+			screenSwapped ? lcdMainOnBottom() : lcdMainOnTop();
+		}
+#endif
 	}
 }
 
@@ -869,6 +892,14 @@ std::string browseForFile (void) {
 			clipboardOn = !clipboardOn;
 		}
 
+#ifdef SCREENSWAP
+		// Swap screens
+		if (pressed & KEY_TOUCH) {
+			screenSwapped = !screenSwapped;
+			screenSwapped ? lcdMainOnBottom() : lcdMainOnTop();
+		}
+#endif
+
 		// Make a screenshot
 		if ((held & KEY_R) && (pressed & KEY_L)) {
 		  if (sdMounted || flashcardMounted) {
diff --git a/arm9/source/main.cpp b/arm9/source/main.cpp
index 35d036d..fcb887c 100644
--- a/arm9/source/main.cpp
+++ b/arm9/source/main.cpp
@@ -44,6 +44,9 @@ char titleName[32] = {" "};
 int screenMode = 0;
 
 bool appInited = false;
+#ifdef SCREENSWAP
+bool screenSwapped = false;
+#endif
 
 bool arm7SCFGLocked = false;
 bool isRegularDS = true;
diff --git a/arm9/source/main.h b/arm9/source/main.h
index 094ddc5..a66f13f 100644
--- a/arm9/source/main.h
+++ b/arm9/source/main.h
@@ -13,6 +13,9 @@ extern char titleName[32];
 extern int screenMode;
 
 extern bool appInited;
+#ifdef SCREENSWAP
+extern bool screenSwapped;
+#endif
 
 extern bool arm7SCFGLocked;
 extern bool isRegularDS;