From f30e19a2ec8dff11180a7a101a1368eb4a2d6d08 Mon Sep 17 00:00:00 2001
From: StapleButter <thetotalworm@gmail.com>
Date: Sun, 17 Sep 2017 23:36:28 +0200
Subject: [PATCH] touchscreen input

---
 src/libui_sdl/main.cpp | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/src/libui_sdl/main.cpp b/src/libui_sdl/main.cpp
index 52c8117a..5cbe7508 100644
--- a/src/libui_sdl/main.cpp
+++ b/src/libui_sdl/main.cpp
@@ -41,6 +41,8 @@ int EmuRunning;
 SDL_mutex* ScreenMutex;
 uiDrawBitmap* ScreenBitmap = NULL;
 
+bool Touching = false;
+
 
 void AudioCallback(void* data, Uint8* stream, int len)
 {
@@ -51,6 +53,8 @@ int EmuThreadFunc(void* burp)
 {
     NDS::Init();
 
+    Touching = false;
+
     // DS:
     // 547.060546875 samples per frame
     // 32823.6328125 samples per second
@@ -173,7 +177,33 @@ void OnAreaMouseEvent(uiAreaHandler* handler, uiArea* area, uiAreaMouseEvent* ev
 {
     int x = (int)evt->X;
     int y = (int)evt->Y;
-    printf("mouse: %08X %d,%d\n", (u32)evt->Held1To64, x, y);
+
+    if (Touching && (evt->Up == 1))
+    {
+        Touching = false;
+        NDS::ReleaseKey(16+6);
+        NDS::ReleaseScreen();
+    }
+    else if (!Touching && (evt->Down == 1) && (y >= 192))
+    {
+        Touching = true;
+        NDS::PressKey(16+6);
+        // TODO: scaling/offset as needed
+    }
+
+    if (Touching)
+    {
+        // TODO: scaling, here too
+        y -= 192;
+
+        // clamp
+        if (x < 0) x = 0;
+        else if (x > 255) x = 255;
+        if (y < 0) y = 0;
+        else if (y > 191) y = 191;
+
+        NDS::TouchScreen(x, y);
+    }
 }
 
 void OnAreaMouseCrossed(uiAreaHandler* handler, uiArea* area, int left)