[linux] Add webkit version detection + capabilities

v3/internal/capabilities/capabilities.go

@@ -6,10 +6,6 @@ type Capabilities struct {
 	HasNativeDrag bool
 }
 
-func NewCapabilities(version string) Capabilities {
-	return newCapabilities(version)
-}
-
 func (c Capabilities) AsBytes() []byte {
 	// JSON encode
 	result, err := json.Marshal(c)

v3/internal/capabilities/capabilities_linux.go

@@ -2,8 +2,12 @@
 
 package capabilities
 
-func newCapabilities(_ string) Capabilities {
+import "github.com/wailsapp/wails/v3/internal/operatingsystem"
+
+func NewCapabilities() Capabilities {
 	c := Capabilities{}
-	c.HasNativeDrag = false
+
+	webkitVersion := operatingsystem.GetWebkitVersion()
+	c.HasNativeDrag = webkitVersion.IsAtLeast(2, 36, 0)
 	return c
 }

v3/internal/capabilities/capabilities_windows.go

@@ -14,7 +14,7 @@ func (v version) IsAtLeast(input string) bool {
 	return result >= 0
 }
 
-func newCapabilities(webview2version string) Capabilities {
+func NewCapabilities(version string) Capabilities {
 	webview2 := version(webview2version)
 	c := Capabilities{}
 	c.HasNativeDrag = webview2.IsAtLeast("113.0.0.0")

v3/internal/operatingsystem/webkit_linux.go

@@ -0,0 +1,40 @@
+package operatingsystem
+
+/*
+#cgo linux pkg-config: gtk+-3.0 webkit2gtk-4.0 javascriptcoregtk-4.1
+#include <webkit2/webkit2.h>
+*/
+import "C"
+import "fmt"
+
+type WebkitVersion struct {
+	Major uint
+	Minor uint
+	Micro uint
+}
+
+func GetWebkitVersion() WebkitVersion {
+	var major, minor, micro C.uint
+	major = C.webkit_get_major_version()
+	minor = C.webkit_get_minor_version()
+	micro = C.webkit_get_micro_version()
+	return WebkitVersion{
+		Major: uint(major),
+		Minor: uint(minor),
+		Micro: uint(micro),
+	}
+}
+
+func (v WebkitVersion) String() string {
+	return fmt.Sprintf("v%d.%d.%d", v.Major, v.Minor, v.Micro)
+}
+
+func (v WebkitVersion) IsAtLeast(major int, minor int, micro int) bool {
+	if v.Major != uint(major) {
+		return v.Major > uint(major)
+	}
+	if v.Minor != uint(minor) {
+		return v.Minor > uint(minor)
+	}
+	return v.Micro >= uint(micro)
+}

v3/pkg/application/application_linux.go

@@ -203,5 +203,9 @@ func (a *App) logPlatformInfo() {
 		return
 	}
 
-	a.info("Platform Info:", info.AsLogSlice()...)
+	wkVersion := operatingsystem.GetWebkitVersion()
+	platformInfo := info.AsLogSlice()
+	platformInfo = append(platformInfo, "Webkit2Gtk", wkVersion)
+
+	a.info("Platform Info:", platformInfo...)
 }

v3/pkg/application/webview_window_linux.go

@@ -4,6 +4,7 @@ package application
 
 import (
 	"fmt"
+	"github.com/wailsapp/wails/v3/internal/capabilities"
 	"net/url"
 
 	"github.com/wailsapp/wails/v3/pkg/events"
@@ -355,6 +356,9 @@ func (w *linuxWebviewWindow) run() {
 		w.on(eventId)
 	}
 
+	// Register the capabilities
+	globalApplication.capabilities = capabilities.NewCapabilities()
+
 	app := getNativeApplication()
 
 	menu := app.getApplicationMenu()