From 5d6503e80488c705ff1a1d9dee0c2a916a9d002a Mon Sep 17 00:00:00 2001
From: Maciej Samborski <parys@hskl.org>
Date: Fri, 1 Aug 2025 13:24:33 +0200
Subject: [PATCH] added windowGetSize

---
 Makefile         |  2 +-
 main.c           | 28 +++++++++++++++++-----------
 src/openwindow.c | 13 +++++++++++--
 src/openwindow.h |  5 +++++
 4 files changed, 34 insertions(+), 14 deletions(-)

diff --git a/Makefile b/Makefile
index 5ec3fbd..5e7ebfe 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ all: libopenwindow.so libopenwindow.dll
 
 libopenwindow.so: glad_linux.a
 	mkdir -p ${OUTPUT}
-	gcc ${FLAGS} -o ${OUTPUT}libopenwindow.so ${LINUX_FILES} -lX11 -lGLX -lOpenGL
+	gcc ${FLAGS} -o ${OUTPUT}libopenwindow.so ${LINUX_FILES} -lX11 -lGLX -lOpenGL -lgallium
 
 libopenwindow.dll: glad_windows.a
 	mkdir -p ${OUTPUT}
diff --git a/main.c b/main.c
index 39ba4f2..ce2f313 100644
--- a/main.c
+++ b/main.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 
+#define GL_GLEXT_PROTOTYPES
 #include "GL/gl.h"
 
 #include "src/openwindow.h"
@@ -17,22 +18,27 @@ void handleInput(Window * window) {
 
 int main(void)
 {
-    Window * w = openWindow("Window", 800, 600);
+    Window * window = openWindow("Window", 800, 600);
 
-    windowSetFps(w, 300);
+    windowSetFps(window, 300);
 
-    while (!windowKeyPressed(w, WINDOW_KEY_ESC)) {
-        windowHandleEvents(w);
+    while (!windowKeyPressed(window, WINDOW_KEY_ESC)) {
+        windowHandleEvents(window);
 
-        handleInput(w);
+        handleInput(window);
 
-        //printf("fps: %lf\n", 1 / windowGetDeltaTime(w));
+        //printf("fps: %lf\n", 1 / windowGetDeltaTime(window));
 
-        int x = 0;
-        int y = 0;
-        windowGetMousePosition(w, &x, &y);
+        //int x = 0;
+        //int y = 0;
+        //windowGetMousePosition(window, &x, &y);
         //printf("x: %d, y: %d\n", x, y);
 
+        int w = 0;
+        int h = 0;
+        windowGetSize(window, &w, &h);
+        printf("%dx%d\n", w, h);
+
         glClearColor(0.1, 0.2, 0.3, 1);
         glClear(GL_COLOR_BUFFER_BIT);
         glViewport(0, 0, 800, 600);
@@ -46,10 +52,10 @@ int main(void)
         glEnd();
         glFlush();
 
-        windowDraw(w);
+        windowDraw(window);
     }
 
-    closeWindow(w);
+    closeWindow(window);
 
     return 0;
 }
diff --git a/src/openwindow.c b/src/openwindow.c
index a81d03a..a73d3f4 100644
--- a/src/openwindow.c
+++ b/src/openwindow.c
@@ -41,6 +41,10 @@ void windowDefaultEventHandler(Window * w, XEvent xev) {
         case ButtonRelease:
             w->io.mouse.current[xev.xbutton.button - 1] = false;
             break;
+        case ConfigureNotify:
+            w->width = xev.xconfigure.width;
+            w->height = xev.xconfigure.height;
+            break;
     }
 }
 
@@ -223,10 +227,15 @@ double windowGetDeltaTime(Window *window) {
     return window->dt.dt;
 }
 
+void windowGetSize(Window * window, int * width, int * height) {
+   *width = window->width;
+   *height = window->height;
+}
+
 void windowDraw(Window * window) {
     glXSwapBuffers(window->x.display, window->x.window);
 
-    usleep(((float)1 / (window->fps + 1)) * 1e6);
+    usleep(((float)1 / window->fps) * 1e6);
     clock_gettime(CLOCK_MONOTONIC, window->dt.t2);
 
     window->dt.dt = (double) (window->dt.t2->tv_sec - window->dt.t1->tv_sec) + (window->dt.t2->tv_nsec - window->dt.t1->tv_nsec) / 1e9;
@@ -504,7 +513,7 @@ double windowGetDeltaTime(Window * window) {
 void windowDraw(Window * window) {
     SwapBuffers(window->wgl.display);
 
-    Sleep((uint32_t)(((double)1 / (window->fps + 1)) * 1e3));
+    Sleep((uint32_t)(((double)1 / window->fps) * 1e3));
 
     QueryPerformanceFrequency(&window->dt.freq);
     QueryPerformanceCounter(&window->dt.t2);
diff --git a/src/openwindow.h b/src/openwindow.h
index 4c8e1b1..9e4181b 100644
--- a/src/openwindow.h
+++ b/src/openwindow.h
@@ -71,6 +71,8 @@ typedef struct Window {
     X11 x;         
     WindowDeltaTime dt;
     uint32_t fps;
+    int width;
+    int height;
 } Window;
 
 #define WINDOW_KEY_Q ("q")
@@ -156,6 +158,8 @@ typedef struct Window {
     WGL wgl;
     WindowDeltaTime dt;
     uint32_t fps;
+    int width;
+    int height;
 } Window;
 
 #define WINDOW_KEY_Q ('Q')
@@ -212,6 +216,7 @@ bool windowKeyAlt(Window * window);
 Window * openWindow(const char * name, size_t width, size_t height);
 void windowSetFps(Window * window, uint32_t fps);
 double windowGetDeltaTime(Window * window);
+void windowGetSize(Window * window, int * width, int * height);
 void windowGetMousePosition(Window * window, int * x, int * y);
 void windowDraw(Window * window);
 void windowHandleEvents(Window * window);