From 74dbff4e7e7cd427ac50820cc6366ea421d4d049 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 19 Dec 2014 03:30:41 +0200
Subject: [PATCH] Add touchscreen support on Android

---
 source/input/android/mouse.cpp       |  4 ++++
 source/input/android/touchscreen.cpp | 28 +++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/source/input/android/mouse.cpp b/source/input/android/mouse.cpp
index b16b6be..3fbc5be 100644
--- a/source/input/android/mouse.cpp
+++ b/source/input/android/mouse.cpp
@@ -10,6 +10,10 @@ void Mouse::input_event(const Graphics::Window::Event &event)
 	if(type!=AINPUT_EVENT_TYPE_MOTION)
 		return;
 
+	int source = AInputEvent_getSource(event.aevent);
+	if(window.get_touch_input() && source!=AINPUT_SOURCE_MOUSE && source!=AINPUT_SOURCE_TOUCHPAD)
+		return;
+
 	/* Emulate a mouse with the touch events of a single finger.  If more
 	fingers appear while the first one is held down, they are ignored, even if
 	the first finger is released. */
diff --git a/source/input/android/touchscreen.cpp b/source/input/android/touchscreen.cpp
index bfbf7aa..f4703c3 100644
--- a/source/input/android/touchscreen.cpp
+++ b/source/input/android/touchscreen.cpp
@@ -1,10 +1,36 @@
+#include <msp/graphics/window_private.h>
 #include "touchscreen.h"
 
 namespace Msp {
 namespace Input {
 
-void Touchscreen::input_event(const Graphics::Window::Event &)
+void Touchscreen::input_event(const Graphics::Window::Event &event)
 {
+	int action = AMotionEvent_getAction(event.aevent);
+	int action_pointer = (action&AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)>>AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
+	action &= AMOTION_EVENT_ACTION_MASK;
+
+	int pointer_count = AMotionEvent_getPointerCount(event.aevent);
+	for(int i=0; i<pointer_count; ++i)
+	{
+		int pointer = AMotionEvent_getPointerId(event.aevent, i);
+		float x = AMotionEvent_getX(event.aevent, i);
+		float y = AMotionEvent_getY(event.aevent, i);
+		touch_move(pointer, x*2/window.get_width()-1, 1-y*2/window.get_height());
+	}
+
+	switch(action)
+	{
+	case AMOTION_EVENT_ACTION_DOWN:
+	case AMOTION_EVENT_ACTION_POINTER_DOWN:
+		touch_down(AMotionEvent_getPointerId(event.aevent, action_pointer));
+		break;
+	case AMOTION_EVENT_ACTION_UP:
+	case AMOTION_EVENT_ACTION_POINTER_UP:
+		touch_up(AMotionEvent_getPointerId(event.aevent, action_pointer));
+		break;
+	default:;
+	}
 }
 
 } // namespace Input
-- 
2.43.0