From 97f1b1c735775d1e22412bbcf98ef403f9ee2275 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sat, 16 Oct 2021 07:04:34 +0200
Subject: Add rectangle and sprite, use pixel coordinates, remote opengl
 dependency from test

---
 src/window.c | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

(limited to 'src/window.c')

diff --git a/src/window.c b/src/window.c
index ccfab93..818805d 100644
--- a/src/window.c
+++ b/src/window.c
@@ -27,6 +27,16 @@ static void set_vertical_sync_enabled(Window window, int enabled) {
         fprintf(stderr, "Warning: setting vertical sync failed\n");
 }
 
+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);
+    context->gl.glMatrixMode(GL_PROJECTION);
+    context->gl.glLoadIdentity();
+    context->gl.glOrtho(0.0, width, height, 0.0, -1.0, 1.0);
+}
+
 int mgl_window_create(mgl_window *self, const char *title, int width, int height, mgl_window_callback *callback) {
     return mgl_window_create_with_params(self, title, width, height, DefaultRootWindow(mgl_get_context()->connection), callback);
 }
@@ -45,7 +55,7 @@ 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;
+    window_attr.event_mask = KeyPressMask | StructureNotifyMask;
 
     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, &window_attr);
     XFreeColormap(context->connection, color_map);
@@ -66,6 +76,13 @@ int mgl_window_create_with_params(mgl_window *self, const char *title, int width
     context->gl.glEnable(GL_TEXTURE_2D);
     context->gl.glEnable(GL_BLEND);
     context->gl.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    XWindowAttributes gwa;
+    gwa.width = 0;
+    gwa.height = 0;
+    XGetWindowAttributes(context->connection, self->window, &gwa);
+
+    mgl_window_on_resize(self, gwa.width, gwa.height);
     mgl_window_draw(self);
     return 0;
 }
@@ -79,7 +96,12 @@ 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");*/
+        }
+    }
 }
 
 void mgl_window_events_poll(mgl_window *self) {
@@ -112,12 +134,6 @@ void mgl_window_events_poll(mgl_window *self) {
 
 void mgl_window_draw(mgl_window *self) {
     mgl_context *context = mgl_get_context();
-
-    /* TODO: Get window size from window resize event instead */
-    XWindowAttributes gwa;
-    XGetWindowAttributes(context->connection, self->window, &gwa);
-
-    context->gl.glViewport(0, 0, gwa.width, gwa.height);
     context->gl.glClear(GL_COLOR_BUFFER_BIT);
     context->gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
     if(self->callback.draw)
-- 
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