Attempted fix for both drag and doubleclick (#1704)

* Attempted fix for both drag and doubleclick

* Shameful hack for windows doubleclick events

* Handle end of drag

* Remove dbClickInterval

v2/internal/frontend/desktop/windows/frontend.go

@@ -391,6 +391,7 @@ func (f *Frontend) setupChromium() {
 	}
 	chromium.Embed(f.mainWindow.Handle())
 	chromium.Resize()
+	f.mainWindow.chromium = chromium
 	settings, err := chromium.GetSettings()
 	if err != nil {
 		log.Fatal(err)
@@ -572,6 +573,7 @@ func (f *Frontend) Callback(message string) {
 }
 
 func (f *Frontend) startDrag() error {
+	f.mainWindow.dragging = true
 	if !w32.ReleaseCapture() {
 		return fmt.Errorf("unable to release mouse capture")
 	}

v2/internal/frontend/desktop/windows/window.go

@@ -3,6 +3,7 @@
 package windows
 
 import (
+	"github.com/wailsapp/wails/v2/internal/frontend/desktop/windows/go-webview2/pkg/edge"
 	"unsafe"
 
 	"github.com/wailsapp/wails/v2/internal/frontend/desktop/windows/win32"
@@ -32,6 +33,9 @@ type Window struct {
 
 	OnSuspend func()
 	OnResume  func()
+	dragging  bool
+
+	chromium *edge.Chromium
 }
 
 func NewWindow(parent winc.Controller, appoptions *options.App, versionInfo *operatingsystem.WindowsVersionInfo) *Window {
@@ -165,6 +169,13 @@ func (w *Window) IsVisible() bool {
 func (w *Window) WndProc(msg uint32, wparam, lparam uintptr) uintptr {
 
 	switch msg {
+	case w32.WM_EXITSIZEMOVE:
+		if w.dragging {
+			w.dragging = false
+			w.Invoke(func() {
+				w.chromium.Eval("wails.flags.shouldDrag = false;")
+			})
+		}
 	case win32.WM_POWERBROADCAST:
 		switch wparam {
 		case win32.PBT_APMSUSPEND:
@@ -176,7 +187,6 @@ func (w *Window) WndProc(msg uint32, wparam, lparam uintptr) uintptr {
 				w.OnResume()
 			}
 		}
-
 	case w32.WM_SETTINGCHANGE:
 		settingChanged := w32.UTF16PtrToString((*uint16)(unsafe.Pointer(lparam)))
 		if settingChanged == "ImmersiveColorSet" {

v2/internal/frontend/runtime/desktop/main.js

@@ -63,7 +63,7 @@ window.wails = {
         enableResize: false,
         defaultCursor: null,
         borderThickness: 6,
-        dbClickInterval: 100,
+        shouldDrag: false
     }
 };
 
@@ -78,12 +78,9 @@ if (ENV === 0) {
     delete window.wailsbindings;
 }
 
-var dragTimeOut;
-var dragLastTime = 0;
-
-function drag() {
-    window.WailsInvoke("drag");
-}
+window.addEventListener('mouseup', () => {
+    window.wails.flags.shouldDrag = false;
+});
 
 // Setup drag handler
 // Based on code from: https://github.com/patr0nus/DeskGap
@@ -108,13 +105,8 @@ window.addEventListener('mousedown', (e) => {
                     break;
                 }
             }
-            if (new Date().getTime() - dragLastTime < window.wails.flags.dbClickInterval) {
-                clearTimeout(dragTimeOut);
-                break;
-            }
-            dragTimeOut = setTimeout(drag, window.wails.flags.dbClickInterval);
-            dragLastTime = new Date().getTime();
-            e.preventDefault();
+
+            window.wails.flags.shouldDrag = true;
             break;
         }
         currentElement = currentElement.parentElement;
@@ -127,6 +119,10 @@ function setResize(cursor) {
 }
 
 window.addEventListener('mousemove', function (e) {
+    if (window.wails.flags.shouldDrag) {
+        window.WailsInvoke("drag");
+        return;
+    }
     if (!window.wails.flags.enableResize) {
         return;
     }