feat: add feature to zoom webview contents, closes tauri-apps#388

.changes/impl-zoom-feature.md

@@ -0,0 +1,5 @@
+---
+"wry": minor
+---
+
+Add feature to zoom webview contents, closes #388.

src/webview/android/mod.rs

@@ -118,6 +118,8 @@ impl InnerWebView {
       }
     }
   }
+
+  pub fn zoom(&self, scale_factor: f64) {}
 }
 
 pub struct UnsafeIpc(*mut c_void);

src/webview/mod.rs

@@ -491,6 +491,10 @@ impl WebView {
     self.window.inner_size()
   }
 
+  pub fn zoom(&self, scale_factor: f64) {
+    self.webview.zoom(scale_factor);
+  }
+
   #[cfg(target_os = "android")]
   pub fn run(self, env: JNIEnv, jclass: JClass, jobject: JObject) -> jobject {
     self.webview.run(env, jclass, jobject).unwrap()

src/webview/webkitgtk/mod.rs

@@ -386,6 +386,10 @@ impl InnerWebView {
   pub fn is_devtools_open(&self) -> bool {
     self.is_inspector_open.load(Ordering::Relaxed)
   }
+
+  pub fn zoom(&self, scale_factor: f64) {
+    WebViewExt::set_zoom_level(&*self.webview, scale_factor);
+  }
 }
 
 pub fn platform_webview_version() -> Result<String> {

src/webview/webview2/mod.rs

@@ -612,6 +612,10 @@ window.addEventListener('mousemove', (e) => window.chrome.webview.postMessage('_
   pub fn is_devtools_open(&self) -> bool {
     false
   }
+
+  pub fn zoom(&self, scale_factor: f64) {
+    let _ = unsafe { self.controller.SetZoomFactor(scale_factor) };
+  }
 }
 
 pub fn platform_webview_version() -> Result<String> {

src/webview/wkwebview/mod.rs

@@ -584,6 +584,13 @@ r#"Object.defineProperty(window, 'ipc', {
       (view_frame.size.width as f64, view_frame.size.height as f64).into();
     logical.to_physical(scale_factor)
   }
+
+  #[cfg(target_os = "macos")]
+  pub fn zoom(&self, scale_factor: f64) {
+    unsafe {
+      let _: () = msg_send![self.webview, setPageZoom: scale_factor];
+    }
+  }
 }
 
 pub fn platform_webview_version() -> Result<String> {