Switch to plain C

1 files changed, 81 insertions, 0 deletions

diff --git a/app/src/dxwindow.c b/app/src/dxwindow.c
new file mode 100644
index 0000000..3f775e7
--- /dev/null
+++ b/app/src/dxwindow.c
@@ -0,0 +1,81 @@
+#include <dxwindow.h>
+
+// Include Windows.h before GLFW to avoid macro redefinition warnings.
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+
+#define GLFW_INCLUDE_NONE  // Do not include OpenGL headers.
+#include <GLFW/glfw3.h>
+
+#define GLFW_EXPOSE_NATIVE_WIN32
+#include <GLFW/glfw3native.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct Window {
+    GLFWwindow* glfw_window;
+} Window;
+
+static char glfw_error[1024] = {};
+
+static void glfw_error_callback(int error, const char* description) {
+    sprintf_s(glfw_error, sizeof(glfw_error),
+        "GLFW error %d: %s", error, description);
+}
+
+bool window_global_init() {
+    glfwSetErrorCallback(glfw_error_callback);
+    return glfwInit() == GLFW_TRUE;
+}
+
+void window_global_quit() {
+    glfwTerminate();
+}
+
+const char* window_get_error(Window* wnd) {
+    assert(wnd);
+    return glfw_error;
+}
+
+Window* window_init(int width, int height, const char* title) {
+    Window* wnd = calloc(1, sizeof(Window));
+    if (!wnd) {
+        return 0;
+    }
+    // GLFW by default creates an OpenGL context with the window.
+    // Use GLFW_NO_API to tell it not to do so.
+    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+    if ((wnd->glfw_window = glfwCreateWindow(
+        width, height, title, /*monitor=*/NULL, /*share=*/NULL)) == 0) {
+        free(wnd);
+        return 0;
+    }
+    return wnd;
+}
+
+void window_destroy(Window** ppWindow) {
+    assert(ppWindow);
+    Window* wnd = *ppWindow;
+    if (wnd) {
+        glfwDestroyWindow(wnd->glfw_window);
+        free(wnd);
+        *ppWindow = 0;
+    }
+}
+
+HWND window_handle(Window* wnd) {
+    assert(wnd);
+    return glfwGetWin32Window(wnd->glfw_window);
+}
+
+void window_update(Window* wnd) {
+    assert(wnd);
+    glfwPollEvents();
+}
+
+bool window_should_close(const Window* wnd) {
+    assert(wnd);
+    return glfwWindowShouldClose(wnd->glfw_window) == GLFW_TRUE;
+}