Adds the ability to get monitor information through win.GetPrimaryMonitor()

1 files changed, 42 insertions, 0 deletions

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
+}