From dc5d91b238e9260b2e61224fc8b8cabbb3440323 Mon Sep 17 00:00:00 2001
From: 8o7wer <8o7wermobile@gmail.com>
Date: Fri, 10 May 2019 17:50:15 -0800
Subject: Added the ability to get width, height, and refresh rate from the
 monitor through win.GetPrimaryMonitor(). Added the borderless and maximized
 options.

---
 win/monitor.go | 42 ++++++++++++++++++++++++++++++++++++++++++
 win/win.go     | 30 ++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 win/monitor.go

diff --git a/win/monitor.go b/win/monitor.go
new file mode 100644
index 0000000..931484a
--- /dev/null
+++ b/win/monitor.go
@@ -0,0 +1,42 @@
+package win
+
+import (
+  "github.com/faiface/mainthread"
+  "github.com/go-gl/glfw/v3.2/glfw"
+)
+
+
+// Holds information on a monitor
+type Monitor struct {
+  Width, Height int
+  RefreshRate   int
+}
+
+// Returns a struct containing information about the primary monitor
+func GetPrimaryMonitor() (Monitor, error) {
+  returns := mainthread.CallVal( func() interface{} {
+    err := glfw.Init()
+    if err != nil {
+      return err
+    }
+
+    return glfw.GetPrimaryMonitor().GetVideoMode()
+  })
+
+  monitor := Monitor{0, 0, 0}
+  var err error = nil
+
+  switch v := returns.(type) {
+    case *glfw.VidMode:
+      videoMode := v
+
+      width := videoMode.Width
+      height := videoMode.Height
+      refreshRate := videoMode.RefreshRate
+      monitor = Monitor{width, height, refreshRate}
+    case error:
+      err = v
+  }
+
+  return monitor, err
+}
diff --git a/win/win.go b/win/win.go
index f624f35..519db84 100644
--- a/win/win.go
+++ b/win/win.go
@@ -20,6 +20,8 @@ type options struct {
 	title         string
 	width, height int
 	resizable     bool
+	borderless		bool
+	maximized			bool
 }
 
 // Title option sets the title (caption) of the window.
@@ -44,6 +46,20 @@ func Resizable() Option {
 	}
 }
 
+//Borderless option makes the window borderless
+func Borderless() Option {
+	return func(o *options) {
+		o.borderless = true
+	}
+}
+
+//Maximized option makes the window start maximized
+func Maximized() Option {
+	return func(o *options) {
+		o.maximized = true
+	}
+}
+
 // New creates a new window with all the supplied options.
 //
 // The default title is empty and the default size is 640x480.
@@ -53,6 +69,8 @@ func New(opts ...Option) (*Win, error) {
 		width:     640,
 		height:    480,
 		resizable: false,
+		borderless: false,
+		maximized: false,
 	}
 	for _, opt := range opts {
 		opt(&o)
@@ -80,6 +98,9 @@ func New(opts ...Option) (*Win, error) {
 		// hiDPI hack
 		width, _ := w.w.GetFramebufferSize()
 		w.ratio = width / o.width
+		if w.ratio < 1 {
+			w.ratio = 1
+		}
 		if w.ratio != 1 {
 			o.width /= w.ratio
 			o.height /= w.ratio
@@ -115,7 +136,16 @@ func makeGLFWWin(o *options) (*glfw.Window, error) {
 	} else {
 		glfw.WindowHint(glfw.Resizable, glfw.False)
 	}
+	if o.borderless {
+		glfw.WindowHint(glfw.Decorated, glfw.False)
+	}
+	if o.maximized {
+		glfw.WindowHint(glfw.Maximized, glfw.True)
+	}
 	w, err := glfw.CreateWindow(o.width, o.height, o.title, nil, nil)
+	if o.maximized {
+		o.width, o.height = w.GetFramebufferSize() // set o.width and o.height to the window size due to the window being maximized
+	}
 	if err != nil {
 		return nil, err
 	}
-- 
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