Implement Disable Pinch Zoom

examples/disable_pinch_zoom.go

@@ -0,0 +1,62 @@
+//go:build windows
+
+package main
+
+import (
+	"fmt"
+
+	"github.com/wailsapp/go-webview2/pkg/edge"
+)
+
+// Example showing how to disable pinch zoom in WebView2
+func main() {
+	fmt.Println("WebView2 Pinch Zoom Control Example")
+	fmt.Println("===================================")
+
+	// Create a WebView2 instance
+	chromium := edge.NewChromium()
+
+	// Method 1: Disable pinch zoom during initialization
+	// This is the recommended approach as it ensures the setting
+	// is applied as soon as the WebView2 is ready
+	pinchZoomEnabled := false
+	chromium.PinchZoomEnabled = &pinchZoomEnabled
+
+	fmt.Println("✓ Pinch zoom disabled during initialization")
+
+	// Set up other properties if needed
+	chromium.Debug = true
+
+	// In a real application, you would:
+	// 1. Create a window (hwnd)
+	// 2. Call chromium.Embed(hwnd) to initialize WebView2
+	// 3. The pinch zoom setting will be automatically applied
+
+	// Method 2: Disable pinch zoom after initialization (runtime control)
+	// This can be used to enable/disable pinch zoom dynamically
+
+	// Note: This would only work after chromium.Embed() is called
+	// err := chromium.PutIsPinchZoomEnabled(false)
+	// if err != nil {
+	//     log.Printf("Error disabling pinch zoom: %v", err)
+	// }
+
+	// Method 3: Check current pinch zoom setting
+	// Note: This would only work after chromium.Embed() is called
+	// enabled, err := chromium.GetIsPinchZoomEnabled()
+	// if err != nil {
+	//     log.Printf("Error getting pinch zoom status: %v", err)
+	// } else {
+	//     fmt.Printf("Pinch zoom is currently: %t\n", enabled)
+	// }
+
+	fmt.Println("\nUsage Examples:")
+	fmt.Println("1. Set before initialization: chromium.PinchZoomEnabled = &false")
+	fmt.Println("2. Set after initialization: chromium.PutIsPinchZoomEnabled(false)")
+	fmt.Println("3. Check current setting: enabled, err := chromium.GetIsPinchZoomEnabled()")
+
+	fmt.Println("\nThis setting prevents users from zooming the webpage using:")
+	fmt.Println("- Ctrl + mouse wheel")
+	fmt.Println("- Pinch gestures on touchpads/touchscreens")
+	fmt.Println("- Keyboard shortcuts like Ctrl+Plus/Ctrl+Minus")
+}

pkg/edge/capabilities.go

@@ -141,6 +141,7 @@ const (
 	NewWindow87                = Capability("87.0.664.75") // New window creation (v87)
 	DocumentTitleChanged87     = Capability("87.0.664.75") // Document title changes (v87)
 	IsSuspended                = Capability("87.0.664.75") // Suspension state
+	PinchZoom                  = Capability("87.0.664.75") // Pinch zoom control
 )
 
 // WebView2 Runtime Version 86.0.622.58 (Released: January 2021)

pkg/edge/chromium.go

@@ -76,6 +76,7 @@ type Chromium struct {
 	DataPath              string
 	BrowserPath           string
 	AdditionalBrowserArgs []string
+	PinchZoomEnabled      *bool
 
 	// permissions
 	permissions      map[CoreWebView2PermissionKind]CoreWebView2PermissionState
@@ -386,6 +387,14 @@ func (e *Chromium) CreateCoreWebView2ControllerCompleted(res uintptr, controller
 		e.errorCallback(err)
 	}
 
+	// Apply pinch zoom setting if configured
+	if e.PinchZoomEnabled != nil {
+		err = e.PutIsPinchZoomEnabled(*e.PinchZoomEnabled)
+		if err != nil {
+			e.errorCallback(err)
+		}
+	}
+
 	atomic.StoreUintptr(&e.inited, 1)
 
 	return 0
@@ -662,6 +671,38 @@ func (e *Chromium) PutIsSwipeNavigationEnabled(enabled bool) error {
 	return nil
 }
 
+func (e *Chromium) GetIsPinchZoomEnabled() (bool, error) {
+	if !HasCapability(e.webview2RuntimeVersion, PinchZoom) {
+		return false, UnsupportedCapabilityError
+	}
+	webview2Settings, err := e.webview.GetSettings()
+	if err != nil {
+		return false, err
+	}
+	webview2Settings5 := webview2Settings.GetICoreWebView2Settings5()
+	result, err := webview2Settings5.GetIsPinchZoomEnabled()
+	if err != nil {
+		return false, err
+	}
+	return result, nil
+}
+
+func (e *Chromium) PutIsPinchZoomEnabled(enabled bool) error {
+	if !HasCapability(e.webview2RuntimeVersion, PinchZoom) {
+		return UnsupportedCapabilityError
+	}
+	webview2Settings, err := e.webview.GetSettings()
+	if err != nil {
+		return err
+	}
+	webview2Settings5 := webview2Settings.GetICoreWebView2Settings5()
+	err = webview2Settings5.PutIsPinchZoomEnabled(enabled)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 func (e *Chromium) AllowExternalDrag(allow bool) error {
 	if !HasCapability(e.webview2RuntimeVersion, AllowExternalDrop) {
 		return UnsupportedCapabilityError