From 5cbff06ff9153f7a7958202a777d98ebeae59393 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sat, 16 Oct 2021 08:54:21 +0200
Subject: Cursor motion

---
 src/window.c | 48 +++++++++++++++++++++++++++++++++++-------------
 1 file changed, 35 insertions(+), 13 deletions(-)

(limited to 'src')

diff --git a/src/window.c b/src/window.c
index 62f7e88..253ea3a 100644
--- a/src/window.c
+++ b/src/window.c
@@ -29,9 +29,9 @@ static void set_vertical_sync_enabled(Window window, int enabled) {
 
 static void mgl_window_on_resize(mgl_window *self, int width, int height) {
     mgl_context *context = mgl_get_context();
-    self->width = width;
-    self->height = height;
-    context->gl.glViewport(0, 0, self->width, self->height);
+    self->size.x = width;
+    self->size.y = height;
+    context->gl.glViewport(0, 0, self->size.x, self->size.y);
     context->gl.glMatrixMode(GL_PROJECTION);
     context->gl.glLoadIdentity();
     context->gl.glOrtho(0.0, width, height, 0.0, -1.0, 1.0);
@@ -55,10 +55,16 @@ int mgl_window_create_with_params(mgl_window *self, const char *title, int width
 
     XSetWindowAttributes window_attr;
     window_attr.colormap = color_map;
-    window_attr.event_mask = KeyPressMask | StructureNotifyMask;
+    window_attr.event_mask = 
+        KeyPressMask | KeyReleaseMask |
+        ButtonPressMask | ButtonReleaseMask |
+        PointerMotionMask | Button1MotionMask | Button2MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask | ButtonMotionMask |
+        StructureNotifyMask;
     window_attr.bit_gravity = NorthWestGravity;
 
-    self->window = XCreateWindow(context->connection, parent_window, 0, 0, width, height, 0, ((XVisualInfo*)context->visual_info)->depth, InputOutput, ((XVisualInfo*)context->visual_info)->visual, CWColormap | CWEventMask | CWBitGravity, &window_attr);
+    self->window = XCreateWindow(context->connection, parent_window, 0, 0, width, height, 0,
+        ((XVisualInfo*)context->visual_info)->depth, InputOutput, ((XVisualInfo*)context->visual_info)->visual,
+        CWColormap | CWEventMask | CWBitGravity, &window_attr);
     XFreeColormap(context->connection, color_map);
     if(!self->window) {
         fprintf(stderr, "XCreateWindow failed\n");
@@ -83,6 +89,11 @@ int mgl_window_create_with_params(mgl_window *self, const char *title, int width
     gwa.height = 0;
     XGetWindowAttributes(context->connection, self->window, &gwa);
 
+    Window dummy_w;
+    int dummy_i;
+    unsigned int dummy_u;
+    XQueryPointer(context->connection, self->window, &dummy_w, &dummy_w, &dummy_i, &dummy_i, &self->cursor_position.x, &self->cursor_position.y, &dummy_u);
+
     mgl_window_on_resize(self, gwa.width, gwa.height);
     mgl_window_draw(self);
     return 0;
@@ -96,11 +107,21 @@ void mgl_window_deinit(mgl_window *self) {
     }
 }
 
-static void on_receive_x11_event(mgl_window *window, XEvent *xev) {
-    if(xev->type == ConfigureNotify) {
-        if(xev->xconfigure.width != window->width || xev->xconfigure.height != window->height) {
-            mgl_window_on_resize(window, xev->xconfigure.width, xev->xconfigure.height);
-            /*fprintf(stderr, "resize!\n");*/
+static void mgl_window_on_receive_event(mgl_window *self, XEvent *xev) {
+    switch(xev->type) {
+        case ConfigureNotify: {
+            while(XCheckTypedWindowEvent(mgl_get_context()->connection, self->window, ConfigureNotify, xev)) {}
+            if(xev->xconfigure.width != self->size.x || xev->xconfigure.height != self->size.x) {
+                mgl_window_on_resize(self, xev->xconfigure.width, xev->xconfigure.height);
+                /*fprintf(stderr, "resize!\n");*/
+            }
+            break;
+        }
+        case MotionNotify: {
+            while(XCheckTypedWindowEvent(mgl_get_context()->connection, self->window, MotionNotify, xev)) {}
+            self->cursor_position.x = xev->xmotion.x;
+            self->cursor_position.y = xev->xmotion.y;
+            break;
         }
     }
 }
@@ -120,12 +141,13 @@ void mgl_window_events_poll(mgl_window *self) {
     tv.tv_usec = (timeout_ms * 1000) - (tv.tv_sec * 1000 * 1000);*/
 
     /* TODO: Is this needed when using XPending? */
-    const int num_ready_fds = select(1 + x11_fd, &in_fds, NULL, NULL, &tv);
+    /*const int num_ready_fds = select(1 + x11_fd, &in_fds, NULL, NULL, &tv);*/
+    const int num_ready_fds = 1;
     if(num_ready_fds > 0) {
         XEvent xev;
-        while(XPending(display)) {
+        while(self->window && XPending(display)) {
             XNextEvent(display, &xev);
-            on_receive_x11_event(self, &xev);
+            mgl_window_on_receive_event(self, &xev);
         }
     } else if(num_ready_fds == -1 && errno != EINTR) {
         /* TODO: */
-- 
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