[windows] Added options, WindowBackgroundIsTranslucent

v2/internal/ffenestri/effectstructs_windows.h

@@ -0,0 +1,64 @@
+// Credit: https://gist.github.com/ysc3839/b08d2bff1c7dacde529bed1d37e85ccf
+#pragma once
+
+typedef enum _WINDOWCOMPOSITIONATTRIB
+{
+	WCA_UNDEFINED = 0,
+	WCA_NCRENDERING_ENABLED = 1,
+	WCA_NCRENDERING_POLICY = 2,
+	WCA_TRANSITIONS_FORCEDISABLED = 3,
+	WCA_ALLOW_NCPAINT = 4,
+	WCA_CAPTION_BUTTON_BOUNDS = 5,
+	WCA_NONCLIENT_RTL_LAYOUT = 6,
+	WCA_FORCE_ICONIC_REPRESENTATION = 7,
+	WCA_EXTENDED_FRAME_BOUNDS = 8,
+	WCA_HAS_ICONIC_BITMAP = 9,
+	WCA_THEME_ATTRIBUTES = 10,
+	WCA_NCRENDERING_EXILED = 11,
+	WCA_NCADORNMENTINFO = 12,
+	WCA_EXCLUDED_FROM_LIVEPREVIEW = 13,
+	WCA_VIDEO_OVERLAY_ACTIVE = 14,
+	WCA_FORCE_ACTIVEWINDOW_APPEARANCE = 15,
+	WCA_DISALLOW_PEEK = 16,
+	WCA_CLOAK = 17,
+	WCA_CLOAKED = 18,
+	WCA_ACCENT_POLICY = 19,
+	WCA_FREEZE_REPRESENTATION = 20,
+	WCA_EVER_UNCLOAKED = 21,
+	WCA_VISUAL_OWNER = 22,
+	WCA_HOLOGRAPHIC = 23,
+	WCA_EXCLUDED_FROM_DDA = 24,
+	WCA_PASSIVEUPDATEMODE = 25,
+	WCA_USEDARKMODECOLORS = 26,
+	WCA_LAST = 27
+} WINDOWCOMPOSITIONATTRIB;
+
+typedef struct _WINDOWCOMPOSITIONATTRIBDATA
+{
+	WINDOWCOMPOSITIONATTRIB Attrib;
+	PVOID pvData;
+	SIZE_T cbData;
+} WINDOWCOMPOSITIONATTRIBDATA;
+
+typedef enum _ACCENT_STATE
+{
+	ACCENT_DISABLED = 0,
+	ACCENT_ENABLE_GRADIENT = 1,
+	ACCENT_ENABLE_TRANSPARENTGRADIENT = 2,
+	ACCENT_ENABLE_BLURBEHIND = 3,
+	ACCENT_ENABLE_ACRYLICBLURBEHIND = 4, // RS4 1803
+	ACCENT_ENABLE_HOSTBACKDROP = 5, // RS5 1809
+ 	ACCENT_INVALID_STATE = 6
+} ACCENT_STATE;
+
+typedef struct _ACCENT_POLICY
+{
+	ACCENT_STATE AccentState;
+	DWORD AccentFlags;
+	DWORD GradientColor;
+	DWORD AnimationId;
+} ACCENT_POLICY;
+
+typedef BOOL (WINAPI *pfnGetWindowCompositionAttribute)(HWND, WINDOWCOMPOSITIONATTRIBDATA*);
+
+typedef BOOL (WINAPI *pfnSetWindowCompositionAttribute)(HWND, WINDOWCOMPOSITIONATTRIBDATA*);

v2/internal/ffenestri/ffenestri.go

@@ -19,7 +19,7 @@ import (
 #cgo darwin CFLAGS: -DFFENESTRI_DARWIN=1
 #cgo darwin LDFLAGS: -framework WebKit -lobjc
 
-#cgo windows CPPFLAGS: -std=c++11
+#cgo windows CXXFLAGS: -std=c++11
 #cgo windows,amd64 LDFLAGS: -L./windows/x64 -lwebview -lWebView2Loader -lgdi32 -lole32 -lShlwapi -luser32 -loleaut32
 
 #include <stdlib.h>

v2/internal/ffenestri/ffenestri.h

@@ -45,6 +45,8 @@ extern void DeleteTrayMenuByID(struct Application*, const char *id);
 extern void UpdateTrayMenuLabel(struct Application*, const char* JSON);
 extern void AddContextMenu(struct Application*, char *contextMenuJSON);
 extern void UpdateContextMenu(struct Application*, char *contextMenuJSON);
+extern void WebviewIsTransparent(struct Application*);
+extern void WindowBackgroundIsTranslucent(struct Application*);
 
 #ifdef __cplusplus
 }

v2/internal/ffenestri/ffenestri_windows.cpp

@@ -9,6 +9,7 @@
 #include <locale>
 #include <codecvt>
 #include "windows/WebView2.h"
+#include "effectstructs_windows.h"
 #include <Shlobj.h>
 
 int debug = 0;
@@ -56,6 +57,8 @@ struct Application *NewApplication(const char *title, int width, int height, int
     result->startHidden = startHidden;
     result->logLevel = logLevel;
     result->hideWindowOnClose = hideWindowOnClose;
+    result->webviewIsTranparent = false;
+    result->windowBackgroundIsTranslucent = false;
 
     // Min/Max Width/Height
     result->minWidth = 0;
@@ -63,6 +66,12 @@ struct Application *NewApplication(const char *title, int width, int height, int
     result->maxWidth = 0;
     result->maxHeight = 0;
 
+    // Default colour
+    result->backgroundColour.R = 255;
+    result->backgroundColour.G = 255;
+    result->backgroundColour.B = 255;
+    result->backgroundColour.A = 255;
+
     // Have a frame by default
     result->frame = 1;
 
@@ -98,6 +107,23 @@ void performShutdown(struct Application *app) {
     messageFromWindowCallback("WC");
 }
 
+void enableTranslucentBackground(struct Application *app) {
+    HMODULE hUser = GetModuleHandleA("user32.dll");
+    if (hUser)
+    {
+        pfnSetWindowCompositionAttribute setWindowCompositionAttribute = (pfnSetWindowCompositionAttribute)GetProcAddress(hUser, "SetWindowCompositionAttribute");
+        if (setWindowCompositionAttribute)
+        {
+            ACCENT_POLICY accent = { ACCENT_ENABLE_BLURBEHIND, 0, 0, 0 };
+            WINDOWCOMPOSITIONATTRIBDATA data;
+            data.Attrib = WCA_ACCENT_POLICY;
+            data.pvData = &accent;
+            data.cbData = sizeof(accent);
+            setWindowCompositionAttribute(app->window, &data);
+        }
+    }
+}
+
 LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
 
     struct Application *app = (struct Application *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
@@ -334,6 +360,16 @@ void Run(struct Application* app, int argc, char **argv) {
         startVisibility = SW_HIDE;
     }
 
+    // TODO: Make configurable
+//    COREWEBVIEW2_COLOR wvColor;
+//    wvColor.A = 255;
+//    std::weak_ptr<ICoreWebView2Controller2> controller2 = app->webviewController->query<ICoreWebView2Controller2>();
+//    controller2->put_DefaultBackgroundColor(wvColor);
+
+    if( app->windowBackgroundIsTranslucent ) {
+        enableTranslucentBackground(app);
+    }
+
     // private center() as we are on main thread
     center(app);
     ShowWindow(app->window, startVisibility);
@@ -519,6 +555,7 @@ void SetPosition(struct Application* app, int x, int y) {
 }
 
 void Quit(struct Application* app) {
+    DestroyWindow(app->window);
 }
 
 
@@ -548,6 +585,17 @@ void DisableFrame(struct Application* app) {
     app->frame = 0;
 }
 
+// WebviewIsTransparent will make the webview transparent
+// revealing the window underneath
+void WebviewIsTransparent(struct Application *app) {
+	app->webviewIsTranparent = true;
+}
+
+void WindowBackgroundIsTranslucent(struct Application *app) {
+	app->windowBackgroundIsTranslucent = true;
+}
+
+
 void OpenDialog(struct Application* app, char *callbackID, char *title, char *filters, char *defaultFilename, char *defaultDir, int allowFiles, int allowDirs, int allowMultiple, int showHiddenFiles, int canCreateDirectories, int resolvesAliases, int treatPackagesAsDirectories) {
 }
 void SaveDialog(struct Application* app, char *callbackID, char *title, char *filters, char *defaultFilename, char *defaultDir, int showHiddenFiles, int canCreateDirectories, int treatPackagesAsDirectories) {

v2/internal/ffenestri/ffenestri_windows.go

@@ -1,6 +1,63 @@
 package ffenestri
 
+import "C"
+
+/*
+
+#cgo windows CXXFLAGS: -std=c++11
+#cgo windows,amd64 LDFLAGS: -L./windows/x64 -lwebview -lWebView2Loader -lgdi32 -lole32 -lShlwapi -luser32 -loleaut32
+
+#include "ffenestri.h"
+
+*/
+import "C"
+
 func (a *Application) processPlatformSettings() error {
 
+	config := a.config.Windows
+
+	// Check if the webview should be transparent
+	if config.WebviewIsTransparent {
+		C.WebviewIsTransparent(a.app)
+	}
+
+	if config.WindowBackgroundIsTranslucent {
+		C.WindowBackgroundIsTranslucent(a.app)
+	}
+
+	//// Process menu
+	////applicationMenu := options.GetApplicationMenu(a.config)
+	//applicationMenu := a.menuManager.GetApplicationMenuJSON()
+	//if applicationMenu != "" {
+	//	C.SetApplicationMenu(a.app, a.string2CString(applicationMenu))
+	//}
+	//
+	//// Process tray
+	//trays, err := a.menuManager.GetTrayMenus()
+	//if err != nil {
+	//	return err
+	//}
+	//if trays != nil {
+	//	for _, tray := range trays {
+	//		C.AddTrayMenu(a.app, a.string2CString(tray))
+	//	}
+	//}
+	//
+	//// Process context menus
+	//contextMenus, err := a.menuManager.GetContextMenus()
+	//if err != nil {
+	//	return err
+	//}
+	//if contextMenus != nil {
+	//	for _, contextMenu := range contextMenus {
+	//		C.AddContextMenu(a.app, a.string2CString(contextMenu))
+	//	}
+	//}
+	//
+	//// Process URL Handlers
+	//if a.config.Mac.URLHandlers != nil {
+	//	C.HasURLHandlers(a.app)
+	//}
+
 	return nil
 }

v2/internal/ffenestri/ffenestri_windows.h

@@ -42,6 +42,9 @@ struct Application{
     LONG maxHeight;
     int frame;
     char *startupURL;
+    bool webviewIsTranparent;
+    bool windowBackgroundIsTranslucent;
+    COREWEBVIEW2_COLOR backgroundColour;
 
     // placeholders
     char* bindings;

v2/internal/ffenestri/windows/x64/LICENSE

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2018 Josh Turpen, Will Speak
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

v2/pkg/options/options.go

@@ -1,6 +1,7 @@
 package options
 
 import (
+	"github.com/wailsapp/wails/v2/pkg/options/windows"
 	"log"
 	"runtime"
 
@@ -31,6 +32,7 @@ type App struct {
 	ContextMenus      []*menu.ContextMenu
 	TrayMenus         []*menu.TrayMenu
 	Menu              *menu.Menu
+	Windows           *windows.Options
 	Mac               *mac.Options
 	Logger            logger.Logger `json:"-"`
 	LogLevel          logger.LogLevel

v2/pkg/options/windows/windows.go

@@ -0,0 +1,7 @@
+package windows
+
+// Options are options specific to Mac
+type Options struct {
+	WebviewIsTransparent          bool
+	WindowBackgroundIsTranslucent bool
+}