If not for macOS "fullscreen" (and some Linux), it wouldn't be a pain.
I have realize the solution for a while, with Golang and Lorca. Nonetheless, it uses cgo.
package main import ( "fmt" "log" /* #cgo darwin LDFLAGS: -framework CoreGraphics #if defined(__APPLE__) #include <CoreGraphics/CGDisplayConfiguration.h> int display_width() { return CGDisplayPixelsWide(CGMainDisplayID()); } int display_height() { return CGDisplayPixelsHigh(CGMainDisplayID()); } #else int display_width() { return 0; } int display_height() { return 0; } #endif */ "C" "github.com/zserge/lorca" ) func main() { if lorca.LocateChrome() == "" { lorca.PromptDownload() log.Fatal(fmt.Errorf("cannot open outside Chrome desktop application")) } else { width := int(C.display_width()) height := int(C.display_height()) if width == 0 || height == 0 { width = 1024 height = 768 } w, err := lorca.New("https://example.com", "", width, height) if err != nil { log.Fatal(err) } defer w.Close() // This does nothing in macOS, BTW. w.SetBounds(lorca.Bounds{ WindowState: lorca.WindowStateMaximized, }) <-w.Done() } } Then, you can cross-compile for all major platforms using xgo.
BRANCH=${<BRANCH_NAME>:-"master"} REPO=<REPO_NAME> $(go env GOPATH)/bin/xgo \ -ldflags="-H windowsgui" \ -branch=BRANCH \ -targets=windows/* \ REPO if [[ $(go env GOOS) == 'darwin' ]]; then go build "${PWD##*/}.app" $(go env GOPATH)/bin/xgo \ -branch=BRANCH \ -targets=linux/* \ REPO else $(go env GOPATH)/bin/xgo \ -branch=BRANCH \ -targets=linux/*,darwin/amd64 \ REPO rm *-darwin*.app for f in *-darwin*; do mv "$f" "$f.app"; done fi The question still remains. What if I don't use Lorca, Chrome DevTools Protocol, or any other frameworks with built-in maximize, so what should I do? (BTW, Electron has built-in maximization, but webview/webview and Neutralino.js don't have one...)
I have an approximate answer in cgo.
import ( "runtime" /* #cgo darwin LDFLAGS: -framework CoreGraphics #cgo linux pkg-config: x11 #if defined(__APPLE__) #include <CoreGraphics/CGDisplayConfiguration.h> int display_width() { return CGDisplayPixelsWide(CGMainDisplayID()); } int display_height() { return CGDisplayPixelsHigh(CGMainDisplayID()); } #elif defined(_WIN32) #include <wtypes.h> int display_width() { RECT desktop; const HWND hDesktop = GetDesktopWindow(); GetWindowRect(hDesktop, &desktop); return desktop.right; } int display_height() { RECT desktop; const HWND hDesktop = GetDesktopWindow(); GetWindowRect(hDesktop, &desktop); return desktop.bottom; } #else #include <X11/Xlib.h> int display_width() { Display* d = XOpenDisplay(NULL); Screen* s = DefaultScreenOfDisplay(d); return s->width; } int display_height() { Display* d = XOpenDisplay(NULL); Screen* s = DefaultScreenOfDisplay(d); return s->height; } #endif */ "C" ) func getFullscreenSize() (int, int) { width := int(C.display_width()) height := int(C.display_height()) // Current method of getting screen size in linux and windows makes it fall offscreen if runtime.GOOS == "linux" || runtime.GOOS == "windows" { width = width - 50 height = height - 100 } if width == 0 || height == 0 { width = 1024 height = 768 } return width, height } Not really fullscreen in Windows and Linux. Also, when compiling for Linux, you cannot use xgo -- I use Docker instead.
ARG ARCH="" FROM ${ARCH}debian RUN apt-get update RUN apt-get install -y --no-install-recommends build-essential RUN apt-get install -y xorg-dev RUN apt-get install -y golang git And,
for arch in amd64 i386 do docker build --build-arg ARCH=$arch/ -t ${PWD##*/}-$arch . done for arch in amd64 i386 do docker run --rm -v \ "$PWD":/usr/app \ -w /usr/app \ ${PWD##*/}-$arch \ go build -o "${PWD##*/}-$arch" done BTW, I've just found docker xbuild.
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