add c++ bindings

examples/minimal-cxx/Makefile

@@ -0,0 +1,15 @@
+CXXFLAGS ?= -Wall -Wextra -std=c++11
+
+ifeq ($(OS),Windows_NT)
+	LDFLAGS = -lgdi32
+else
+	UNAME_S := $(shell uname -s)
+	ifeq ($(UNAME_S),Darwin)
+		LDFLAGS = -framework Cocoa
+	else
+		LDFLAGS = -lX11
+	endif
+endif
+
+main: main.cc ../../fenster.h
+	$(CXX) main.cc -I../.. -o $@ $(CXXFLAGS) $(LDFLAGS)

examples/minimal-cxx/main.cc

@@ -0,0 +1,72 @@
+#include "fenster.h"
+
+class Fenster {
+  struct fenster f;
+  int64_t now;
+
+public:
+  Fenster(const int w, const int h, const char *title)
+      : f{.title = title, .width = w, .height = h} {
+    this->f.buf = new uint32_t[w * h];
+    this->now = fenster_time();
+    fenster_open(&this->f);
+  }
+  ~Fenster() {
+    fenster_close(&this->f);
+    delete[] this->f.buf;
+  }
+  bool loop(const int fps) {
+    int64_t t = fenster_time();
+    if (t - this->now < 1000 / fps) {
+      fenster_sleep(t - now);
+    }
+    this->now = t;
+    return fenster_loop(&this->f) == 0;
+  }
+  inline uint32_t &px(const int x, const int y) {
+    return fenster_pixel(&this->f, x, y);
+  }
+  bool key(int c) { return c >= 0 && c < 128 ? this->f.keys[c] : false; }
+  int x() { return this->f.x; }
+  int y() { return this->f.y; }
+  int mouse() { return this->f.mouse; }
+  int mod() { return this->f.mod; }
+};
+
+#define W 320
+#define H 240
+
+/* ============================================================
+ * A very minimal example of a Fenster app:
+ * - Opens a window
+ * - Starts a loop
+ * - Changes pixel colours based on some "shader" formula
+ * - Sleeps if needed to maintain a frame rate of 60 FPS
+ * - Closes a window
+ * ============================================================ */
+static int run() {
+  Fenster f(W, H, "hello c++");
+  int t = 0;
+  while (f.loop(60)) {
+    for (int i = 0; i < W; i++) {
+      for (int j = 0; j < H; j++) {
+        f.px(i, j) = i ^ j ^ t;
+      }
+    }
+		if (f.key(0x1b)) {
+			break;
+		}
+    t++;
+  }
+  return 0;
+}
+
+#if defined(_WIN32)
+int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine,
+                   int nCmdShow) {
+  (void)hInstance, (void)hPrevInstance, (void)pCmdLine, (void)nCmdShow;
+  return run();
+}
+#else
+int main() { return run(); }
+#endif