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New API - webui_set_transparent

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This commit is contained in:
Albert 2025-03-18 17:45:34 -04:00
parent 78b163c350
commit 9430e57040
2 changed files with 78 additions and 18 deletions
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10
include/webui.h
View File

@ -924,6 +924,16 @@ WEBUI_EXPORT void webui_set_event_blocking(size_t window, bool status);
*/
WEBUI_EXPORT void webui_set_frameless(size_t window, bool status);
/**
* @brief Make a WebView window transparent.
*
* @param window The window number
* @param status The transparency status `true` or `false`
*
* @example webui_set_transparent(myWindow, true);
*/
WEBUI_EXPORT void webui_set_transparent(size_t window, bool status);
/**
* @brief Get the HTTP mime type of a file.
*

86
src/webui.c
View File

@ -358,6 +358,7 @@ typedef struct _webui_window_t {
bool disable_browser_high_contrast;
bool resizable;
bool frameless;
bool transparent;
bool hide;
int width;
int height;
@ -2576,6 +2577,23 @@ void webui_set_frameless(size_t window, bool status) {
win->frameless = status;
}
void webui_set_transparent(size_t window, bool status) {
#ifdef WEBUI_LOG
printf("[User] webui_set_transparent([%zu], [%d])\n", window, status);
#endif
// Initialization
_webui_init();
// Dereference
if (_webui_mutex_app_is_exit_now(WEBUI_MUTEX_GET_STATUS) || _webui.wins[window] == NULL)
return;
_webui_window_t* win = _webui.wins[window];
win->transparent = status;
}
void webui_set_event_blocking(size_t window, bool status) {
#ifdef WEBUI_LOG
printf("[User] webui_set_event_blocking([%zu], [%d])\n", window, status);
@ -3568,6 +3586,7 @@ void webui_wait(void) {
_webui_free_mem((void*) _webui.webview_cacheFolder);
_webui.webview_cacheFolder = NULL;
}
CoUninitialize();
_webui_sleep(750);
}
#elif __linux__
@ -11257,11 +11276,29 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
};
LRESULT CALLBACK WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
if (uMsg == WM_CREATE) {
// Set win ptr
CREATESTRUCT* pCreate = (CREATESTRUCT*)lParam;
void* userData = pCreate->lpCreateParams;
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)userData);
}
// Get win ptr
void* ptr = (void*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
_webui_window_t* win = _webui_dereference_win_ptr(ptr);
switch (uMsg) {
case WM_SIZE:
case WM_CREATE: {
if (win) {
if (win->transparent) {
// New layer for background transparency
SetWindowLong(hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) | WS_EX_LAYERED);
}
}
break;
}
case WM_SIZE: {
if (win) {
if (win->webView && win->webView->webviewController) {
RECT bounds;
@ -11270,16 +11307,19 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
}
}
break;
case WM_GETMINMAXINFO:
}
case WM_GETMINMAXINFO: {
if (win) {
if (win->minimum_size_set) {
LPMINMAXINFO lpMMI = (LPMINMAXINFO)lParam;
lpMMI->ptMinTrackSize.x = win->minimum_width;
lpMMI->ptMinTrackSize.y = win->minimum_height;
return 0;
}
}
break;
case WM_CLOSE:
}
case WM_CLOSE: {
if (win) {
// Stop the WebView thread, close the window
// and free resources.
@ -11290,17 +11330,17 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
_webui_wv_event_closed(win);
}
break;
case WM_DESTROY:
if (win) {
// Destroy message will be
// sent by `webui_wait()`
// Nothing to do here.
}
}
case WM_DESTROY: {
// Destroy message will be
// sent by `webui_wait()`
// Nothing to do here.
break;
default:
return DefWindowProc(hwnd, uMsg, wParam, lParam);
}
}
return 0;
// Let Win32 window manager provide default processing
return DefWindowProc(hwnd, uMsg, wParam, lParam);
};
// Close Event
@ -11480,6 +11520,18 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
WEBUI_THREAD_RETURN
}
// Win32 Initialization
if (FAILED(CoInitializeEx(NULL, COINIT_APARTMENTTHREADED))) {
_webui_wv_free(win->webView);
win->webView = NULL;
_webui_mutex_is_webview_update(win, WEBUI_MUTEX_SET_FALSE);
WEBUI_THREAD_RETURN
}
if (win->transparent) {
SetEnvironmentVariable("WEBVIEW2_DEFAULT_BACKGROUND_COLOR", "0");
}
// WebView Dynamic Library
if (!_webui.webviewLib) {
_webui.webviewLib = LoadLibraryA("WebView2Loader.dll");
@ -11534,7 +11586,7 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
0, wvClass, "", style,
win->webView->x, win->webView->y,
win->webView->width, win->webView->height,
NULL, NULL, GetModuleHandle(NULL), NULL
NULL, NULL, GetModuleHandle(NULL), (LONG_PTR)win
);
if (!win->webView->hwnd) {
@ -11550,12 +11602,10 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
win->webView->width = rc.right - rc.left;
win->webView->height = rc.bottom - rc.top;
// Transparency
// SetWindowLongA(win->webView->hwnd, GWL_EXSTYLE, GetWindowLongA(win->webView->hwnd, GWL_EXSTYLE) | WS_EX_LAYERED);
// SetLayeredWindowAttributes(win->webView->hwnd, RGB(0, 255, 0), 0, LWA_COLORKEY); // Green
SetWindowLongPtr(win->webView->hwnd, GWLP_USERDATA, (LONG_PTR)win);
// Show Win32 window
ShowWindow(win->webView->hwnd, SW_SHOW);
// WebView Environment
static CreateCoreWebView2EnvironmentWithOptionsFunc createEnv = NULL;
createEnv = (CreateCoreWebView2EnvironmentWithOptionsFunc)(void*)GetProcAddress(
_webui.webviewLib,