From 84615bccdc0962ac7ecdac258a8006af7ebe1c9b Mon Sep 17 00:00:00 2001
From: quou <quou@disroot.org>
Date: Wed, 31 Jul 2024 22:09:27 +1000
Subject: more mouse stuff

---
 plat.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 plat.h | 11 +++++++++-
 2 files changed, 80 insertions(+), 5 deletions(-)

diff --git a/plat.c b/plat.c
index 6c10b29..16144b4 100644
--- a/plat.c
+++ b/plat.c
@@ -488,16 +488,21 @@ void app_begin(App* a) {
 	Window w = i->wi;
 	int j;
 	i->begin = get_timer();
-	for (j = 0; j < key_count; j++) {
+	for (j = 0; j < key_count; j++)
 		a->key_states[j] &= ~(
 			key_state_just_pressed | key_state_just_released
 		);
-	}
+	for (j = 0; j < mbtn_count; j++)
+		a->mbtn_states[j] &= ~(
+			key_state_just_pressed | key_state_just_released
+		);
+	a->scrollx = a->scrolly = 0;
 	while (XPending(d)) {
 		XEvent e;
 		XWindowAttributes wa;
 		KeySym sym;
 		Key key;
+		int btn;
 		XNextEvent(d, &e);
 		switch (e.type) {
 			case ClientMessage:
@@ -523,6 +528,52 @@ void app_begin(App* a) {
 					a->my = e.xmotion.y / a->s;
 				}
 				break;
+			case ButtonPress:
+				switch (e.xbutton.button) {
+					case 1:
+					case 2:
+					case 3:
+						a->mbtn_states[e.xbutton.button - 1] |= 
+							key_state_pressed |
+							key_state_just_pressed;
+						break;
+					case 4:
+						a->scrolly++;
+						break;
+					case 5:
+						a->scrolly--;
+						break;
+					case 6:
+						a->scrollx++;
+						break;
+					case 7:
+						a->scrollx--;
+						break;
+				}
+				break;
+			case ButtonRelease:
+				switch (e.xbutton.button) {
+					case 1:
+					case 2:
+					case 3:
+						btn = e.xbutton.button - 1;
+						a->mbtn_states[btn] &= ~key_state_pressed;
+						a->mbtn_states[btn] |= key_state_just_released;
+						break;
+					case 4:
+						a->scrolly++;
+						break;
+					case 5:
+						a->scrolly--;
+						break;
+					case 6:
+						a->scrollx++;
+						break;
+					case 7:
+						a->scrollx--;
+						break;
+				}
+				break;
 			case KeyPress:
 				sym = XLookupKeysym(&e.xkey, 0);
 				key = key_from_xkey(sym);
@@ -551,8 +602,8 @@ void app_begin(App* a) {
 							if (XIMaskIsSet(re->valuators.mask, 1)) {
 								i->rmy += (int)values[1];
 							}
-							a->mx = i->rmx / a->s;
-							a->my = i->rmy / a->s;
+							a->mx = i->rmx;
+							a->my = i->rmy;
 						}
 						XFreeEventData(d, &e.xcookie);
 					}
@@ -678,8 +729,23 @@ void cfg_mouse(App* a, int show) {
 		em.mask = mask;
 		XISetMask(mask, XI_RawMotion);
 		XISelectEvents(d, DefaultRootWindow(d), &em, 1);
+		XWarpPointer(
+			d,
+			i->wi,
+			i->wi,
+			0,
+			0,
+			0,
+			0,
+			i->w / 2,
+			i->h / 2
+		);
+		a->mx = i->w / 2;
+		a->my = i->h / 2;
 		i->rmx = a->mx;
 		i->rmy = a->my;
+		i->omx = a->mx;
+		i->omy = a->my;
 	}
 }
 
diff --git a/plat.h b/plat.h
index 70fdf36..190c011 100644
--- a/plat.h
+++ b/plat.h
@@ -142,21 +142,30 @@ typedef enum {
 	key_count
 } Key;
 
+typedef enum {
+	mbtn_left,
+	mbtn_middle,
+	mbtn_right,
+	mbtn_count
+} Mbtn;
+
 typedef enum {
 	key_state_pressed       = 1 << 0,
 	key_state_just_pressed  = 1 << 1,
 	key_state_just_released = 1 << 2
 } Key_State;
 
-typedef struct {
+typedef struct App {
 	int w, h, s, o, mpf;
 	int fps;
 	int mx, my;
+	int scrollx, scrolly;
 	int dmx, dmy;
 	Error err;
 	Colour* fb;
 	Heap* heap;
 	unsigned char key_states[key_count];
+	unsigned char mbtn_states[mbtn_count];
 } App;
 
 App* new_app(Heap* mem, int w, int h, const char* n);
-- 
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