ui: new OCTOPRINT_TFT_RESOLUTION variable

Signed-off-by: Máximo Cuadros <[email protected]>

README.md

@@ -107,7 +107,9 @@ the `.deb` package you can configure it at `/etc/octoprint-tft-environment`.
 - `OCTOPRINT_HOST` - OctoPrint HTTP address, default `http://localhost`
 - `OCTOPRINT_APIKEY` - OctoPrint-TFT expects an [API key]( http://docs.octoprint.org/en/master/api/general.html) to be supplied. This API key can be either the globally configured one or a user specific one if “Access Control”.
 - `OCTOPRINT_CONFIG_FILE` - Location of the OctoPrint's config.yaml file, if `OCTOPRINT_APIKEY` is empty a the global API key will be read from the config file. If empty the file will be searched at the `pi` home folder or the current user.
-- `OCTOPRINT_TFT_STYLE_PATH` - Several themes are supported, and style configurations can be done 	through CSS. This variable defines the location of the application theme.
+- `OCTOPRINT_TFT_STYLE_PATH` - Several themes are supported, and style configurations can be done through CSS. This variable defines the location of the application theme.
+- `OCTOPRINT_TFT_RESOLUTION` -  Resolution of the application, should be configured to the resolution of your screen, for example `800x480`. By default `480x320`.
+
 
 ### Custom controls and commands
 

debian/local/octoprint-tft-environment

@@ -13,3 +13,7 @@ OCTOPRINT_CONFIG_FILE=
 
 # Location of the application theme.
 OCTOPRINT_TFT_STYLE_PATH=/opt/octoprint-tft/styles/default/
+
+# Resolution of the application, should be configured to the resolution of your
+# screen, for example 800x480. By default 480x320.
+OCTOPRINT_TFT_RESOLUTION=

main.go

@@ -5,6 +5,8 @@ import (
 	"os"
 	"os/user"
 	"path/filepath"
+	"strconv"
+	"strings"
 
 	"github.com/gotk3/gotk3/gtk"
 	"github.com/mcuadros/OctoPrint-TFT/ui"
@@ -13,6 +15,7 @@ import (
 
 const (
 	EnvStylePath  = "OCTOPRINT_TFT_STYLE_PATH"
+	EnvResolution = "OCTOPRINT_TFT_RESOLUTION"
 	EnvBaseURL    = "OCTOPRINT_HOST"
 	EnvAPIKey     = "OCTOPRINT_APIKEY"
 	EnvConfigFile = "OCTOPRINT_CONFIG_FILE"
@@ -24,11 +27,13 @@ var (
 	BaseURL    string
 	APIKey     string
 	ConfigFile string
+	Resolution string
 )
 
 func init() {
 	ui.StylePath = os.Getenv(EnvStylePath)
 	APIKey = os.Getenv(EnvAPIKey)
+	Resolution = os.Getenv(EnvResolution)
 
 	BaseURL = os.Getenv(EnvBaseURL)
 	if BaseURL == "" {
@@ -52,7 +57,9 @@ func main() {
 	settings, _ := gtk.SettingsGetDefault()
 	settings.SetProperty("gtk-application-prefer-dark-theme", true)
 
-	ui.New(BaseURL, APIKey)
+	width, height := getSize()
+	_ = ui.New(BaseURL, APIKey, width, height)
+
 	gtk.Main()
 }
 
@@ -100,3 +107,32 @@ func doFindConfigFile(home string) string {
 
 	return ""
 }
+
+func getSize() (width, height int) {
+	if Resolution == "" {
+		return
+	}
+
+	parts := strings.SplitN(Resolution, "x", 2)
+	if len(parts) != 2 {
+		ui.Logger.Fatalf("Malformed %s variable: %q", EnvResolution, Resolution)
+		return
+	}
+
+	var err error
+	width, err = strconv.Atoi(parts[0])
+	if err != nil {
+		ui.Logger.Fatalf("Malformed %s variable: %q, %s",
+			EnvResolution, Resolution, err)
+		return
+	}
+
+	height, err = strconv.Atoi(parts[0])
+	if err != nil {
+		ui.Logger.Fatalf("Malformed %s variable: %q, %s",
+			EnvResolution, Resolution, err)
+		return
+	}
+
+	return
+}

ui/ui.go

@@ -36,16 +36,25 @@ type UI struct {
 	w *gtk.Window
 	t time.Time
 
+	width, height int
 	sync.Mutex
 }
 
-func New(endpoint, key string) *UI {
+func New(endpoint, key string, width, height int) *UI {
+	if width == 0 || height == 0 {
+		width = WindowWidth
+		height = WindowHeight
+	}
+
 	ui := &UI{
 		Printer:       octoprint.NewClient(endpoint, key),
 		Notifications: NewNotifications(),
 
 		w: MustWindow(gtk.WINDOW_TOPLEVEL),
 		t: time.Now(),
+
+		width:  width,
+		height: height,
 	}
 
 	ui.b = NewBackgroundTask(time.Second*5, ui.verifyConnection)
@@ -58,7 +67,8 @@ func (ui *UI) initialize() {
 	ui.loadStyle()
 
 	ui.w.SetTitle(WindowName)
-	ui.w.SetDefaultSize(WindowWidth, WindowHeight)
+	ui.w.SetDefaultSize(ui.width, ui.height)
+
 	ui.w.Connect("show", ui.b.Start)
 	ui.w.Connect("destroy", func() {
 		gtk.MainQuit()