From aff5af827cf8906486fe2c363c2e91e9e06da1f3 Mon Sep 17 00:00:00 2001
From: epoch <epoch@thebackupbox.net>
Date: Tue, 14 Apr 2020 06:01:59 -0500
Subject: redid most of the /dev/input/mice code

---
 src/mouse_die.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 44 insertions(+), 1 deletion(-)

diff --git a/src/mouse_die.c b/src/mouse_die.c
index b17c143..4fddf5f 100644
--- a/src/mouse_die.c
+++ b/src/mouse_die.c
@@ -4,6 +4,10 @@
 #include <fcntl.h>
 #include <unistd.h>
 
+#include "graphics_c3.h"
+
+extern struct hvr_global global;
+extern struct gra_global gra_global;
 
 //#define MOUSEDEV "/dev/input/mouse0" //just one of the many possibly connected mice. (just in case you want to use one mouse for one thing and another mouse for something else)
 #define MOUSEDEV "/dev/input/mice" //all the mice connected act as one.
@@ -27,7 +31,10 @@ int mouse_init() {
 
 int mouse_event_handler() {
   struct wtf ie;
+  int butt;
   int l;
+  int i;
+  int redrawplzkthx=0;
   memset(&ie,0,sizeof(ie));
   if(mfd == -1) {
     mfd=open(MOUSEDEV,O_RDWR);
@@ -40,7 +47,43 @@ int mouse_event_handler() {
   }
   if((l=read(mfd,&ie,sizeof(ie))) > 0) {
     //type == 8 and a or of some bits to say which direction.
-    fprintf(stderr,"# mouse debug: type:\t%d\tdx:%d\tdy:%d\n",ie.type,ie.dx,ie.dy);
+    //these types are movement: 8 40 56 24
+    for(i=0;i<4;i++) {//we need to loop over all buttons each event. :/
+      butt=ie.type & 0x07 & (1<<i);
+      if(butt) {//this button is down
+        fprintf(stderr,"# mouse button %d is down.\n",butt-1);
+	if(gra_global.mousemap[butt-1] != 1) {//freshly down. save coords and set it to down.
+          gra_global.dragstart[butt-1]=gra_global.mouse;
+          gra_global.mousemap[butt-1]=1;
+	  redrawplzkthx=1;
+	}
+      } else {
+        if(gra_global.mousemap[(1<<i)-1]) {//only if it was pressed we mark it as "released"
+	  fprintf(stderr,"# mouse button %d is being marked as released.\n",(1<<i)-1);
+          gra_global.mousemap[(1<<i)-1]=-1;
+	  if((1<<i)-1 == 1) {//do this for right-click only.
+	    gra_global.oldcamera = global.camera.r;//we're done dragging, so set this as where the camera points at for next drag around
+	  }
+	  redrawplzkthx=1;
+	  //this is where camera rotation based on dragging is done?
+	}
+      }
+    }
+    if(ie.dx || ie.dy) {
+      fprintf(stderr,"# mouse debug: type:\t%d\tdx:%d\tdy:%d\n",ie.type,ie.dx,ie.dy);
+      gra_global.mouse.x+=ie.dx;
+      gra_global.mouse.y+=ie.dy;
+      fprintf(stderr,"# mouse: x:%F y:%F\n",gra_global.mouse.x,gra_global.mouse.y);
+      if(gra_global.mousemap[1] == 1) {//if "right" click is held down
+        global.camera.r.x.d=gra_global.oldcamera.x.d + (gra_global.mouse.y - gra_global.dragstart[1].y);
+        global.camera.r.y.d=gra_global.oldcamera.y.d + (gra_global.mouse.x - gra_global.dragstart[1].x);
+      }
+      redrawplzkthx=1;
+    }
+  }
+  if(redrawplzkthx) {
+    redraw();
+    return 1;
   }
   return 0;
 }
-- 
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