Added touch controls to the main menu.

common/menu-list.c

@@ -30,6 +30,7 @@ static void menuAddEntry(menuEntry_s* me) {
         m->firstEntry = me;
         m->lastEntry = me;
     }
+    m->xPos = 0;
     m->nEntries ++;
 }
 

common/menu.c

@@ -403,17 +403,16 @@ void menuLoop() {
     }
     else
     {
-        static int x = 0;
         static int v = 0;
 
         if (menu->nEntries > 7) {
             int wanted_x = clamp(-menu->curEntry * (140 + 30), -(menu->nEntries - 7) * (140 + 30), 0);
-            x += v;
-            v += (wanted_x - x) / 3;
+            menu->xPos += v;
+            v += (wanted_x - menu->xPos) / 3;
             v /= 2;
         }
         else {
-            x = v = 0;
+            menu->xPos = v = 0;
         }
 
         menuEntry_s *active_entry = NULL;
@@ -423,7 +422,7 @@ void menuLoop() {
             int entry_start_x = 29 + i * (140 + 30);
 
             int screen_width = 1280;
-            if (entry_start_x >= (screen_width - x))
+            if (entry_start_x >= (screen_width - menu->xPos))
                 break;
 
             int is_active = i==menu->curEntry;
@@ -431,7 +430,7 @@ void menuLoop() {
             if (is_active)
                 active_entry = me;
 
-            drawEntry(me, entry_start_x + x, is_active);
+            drawEntry(me, entry_start_x + menu->xPos, is_active);
         }
 
         if(active_entry != NULL) {

common/menu.h

@@ -29,6 +29,7 @@ struct menu_s_tag
     menuEntry_s *firstEntry, *lastEntry;
     int nEntries;
     int curEntry;
+    int xPos;
 
     char dirname[PATH_MAX+1];
 };

nx_main/main.c

@@ -3,6 +3,7 @@
 #include <stdio.h>
 
 #include "../common/common.h"
+#include "nx_touch.h"
 
 uint8_t* g_framebuf;
 u32 g_framebuf_width;
@@ -110,6 +111,7 @@ bool menuUpdate(void) {
     bool exitflag = 0;
     menu_s* menu = menuGetCurrent();
     u32 down = hidKeysDown(CONTROLLER_P1_AUTO);
+    handleTouch(menu);
 
     if (down & KEY_Y)
     {

nx_main/nx_touch.c

@@ -0,0 +1,89 @@
+#include "nx_touch.h"
+#include "../common/common.h"
+
+#define TAP_MOVEMENT_GAP 20
+#define LISTING_START_Y 475
+#define LISTING_END_Y 647
+
+struct touchInfo_s touchInfo;
+
+void touchInit() {
+    touchInfo.firstTouch = NULL;
+    touchInfo.prevTouch = NULL;
+    touchInfo.isTap = true;
+    touchInfo.initMenuXPos = 0;
+    touchInfo.initMenuIndex = 0;
+}
+
+void handleTap(menu_s* menu, int px) {
+    int i = 0;
+    menuEntry_s *me = NULL;
+
+    for (me = menu->firstEntry, i = 0; me; me = me->next, i ++) {
+        int entry_start_x = 29 + i * (140 + 30);
+
+        int screen_width = 1280;
+        if (entry_start_x >= (screen_width - menu->xPos))
+            break;
+
+        if (px >= (entry_start_x + menu->xPos) && px <= (entry_start_x + menu->xPos) + 140 ) {
+            launchMenuEntryTask(me);
+            break;
+        }
+    }
+}
+
+void handleTouch(menu_s* menu) {
+    touchPosition currentTouch;
+    u32 touches = hidTouchCount();
+
+    // On touch start.
+    if (touches == 1 && touchInfo.firstTouch == NULL) {
+        hidTouchRead(&currentTouch, 0);
+
+        touchInfo.firstTouch = malloc(sizeof(touchPosition));
+        touchInfo.prevTouch = malloc(sizeof(touchPosition));
+        touchInfo.firstTouch->px = currentTouch.px;
+        touchInfo.firstTouch->py = currentTouch.py;
+        touchInfo.isTap = true;
+        touchInfo.initMenuXPos = menu->xPos;
+        touchInfo.initMenuIndex = menu->curEntry;
+    }
+    // On touch moving.
+    else if (touches >= 1 && touchInfo.firstTouch != NULL) {
+        hidTouchRead(&currentTouch, 0);
+
+        touchInfo.prevTouch->px = currentTouch.px;
+        touchInfo.prevTouch->py = currentTouch.py;
+
+        if (touchInfo.isTap && (abs(touchInfo.firstTouch->px - currentTouch.px) > TAP_MOVEMENT_GAP || abs(touchInfo.firstTouch->py - currentTouch.py) > TAP_MOVEMENT_GAP)) {
+            touchInfo.isTap = false;
+        }
+        if (!menuIsMsgBoxOpen() && touchInfo.firstTouch->py > LISTING_START_Y && touchInfo.firstTouch->py < LISTING_END_Y && !touchInfo.isTap && menu->nEntries > 7) {
+            menu->xPos = touchInfo.initMenuXPos + (currentTouch.px - touchInfo.firstTouch->px);
+            menu->curEntry = touchInfo.initMenuIndex + ((int) (touchInfo.firstTouch->px - currentTouch.px) / 170);
+
+            if (menu->curEntry < 0)
+                menu->curEntry = 0;
+
+            if (menu->curEntry >= menu->nEntries - 6)
+                menu->curEntry = menu->nEntries - 7;
+        }
+    }
+    // On touch end.
+    else if (touchInfo.firstTouch != NULL) {
+        if (menuIsMsgBoxOpen()) {
+            // Handle tapping ok.
+        } else {
+            if (touchInfo.firstTouch->py > LISTING_START_Y && touchInfo.firstTouch->py < LISTING_END_Y && touchInfo.isTap) {
+                handleTap(menu, touchInfo.prevTouch->px);
+            }
+        }
+
+        free(touchInfo.firstTouch);
+        touchInfo.firstTouch = NULL;
+
+        free(touchInfo.prevTouch);
+        touchInfo.prevTouch = NULL;
+    }
+}

nx_main/nx_touch.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <switch.h>
+
+struct touchInfo_s {
+    touchPosition* firstTouch;
+    touchPosition* prevTouch;
+    bool isTap;
+    int initMenuXPos;
+    int initMenuIndex;
+};