win32 webview setup via choc, WIP

Signed-off-by: falkTX <falktx@falktx.com>

src/plugin/DesktopUI.cpp

@@ -210,7 +210,7 @@ class DesktopUI : public UI,
         {
         case 1:
             if (webview != nullptr)
-                reloadWebView(webview);
+                reloadWebView(webview, kPortNumOffset + port * 3 + 2);
             break;
         case 2:
             openUserFilesDir();

src/plugin/Makefile

@@ -52,6 +52,12 @@ endif
 
 TARGETS = features au clap lv2_sep vst2 vst3
 
+# ifeq ($(WINDOWS),true)
+# BUILD_CXX_FLAGS += -DUSING_CHOC
+# LINK_FLAGS += -lole32
+# $(BUILD_DIR)/WebViewWin32.cpp.o: BUILD_CXX_FLAGS += -std=gnu++17
+# endif
+
 # ---------------------------------------------------------------------------------------------------------------------
 
 all: $(TARGETS)

src/plugin/WebView.hpp

@@ -9,7 +9,7 @@ START_NAMESPACE_DISTRHO
 
 void* addWebView(uintptr_t parentWinId, double scaleFactor, uint port);
 void destroyWebView(void* webview);
-void reloadWebView(void* webview);
+void reloadWebView(void* webview, uint port);
 void resizeWebView(void* webview, uint offset, uint width, uint height);
 
 // -----------------------------------------------------------------------------------------------------------

src/plugin/WebView.mm

@@ -59,7 +59,7 @@ void destroyWebView(void* const webview)
     delete impl;
 }
 
-void reloadWebView(void* const webview)
+void reloadWebView(void* const webview, uint)
 {
     WebViewImpl* const impl = static_cast<WebViewImpl*>(webview);
 

src/plugin/WebViewWin32.cpp

@@ -2,26 +2,73 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 #include "WebView.hpp"
+#include "DistrhoPluginInfo.h"
+
+#ifdef USING_CHOC
+#include "choc/gui/choc_WebView.h"
+#endif
 
 START_NAMESPACE_DISTRHO
 
 // -----------------------------------------------------------------------------------------------------------
 
 void* addWebView(const uintptr_t parentWinId, const double scaleFactor, const uint port)
 {
+#ifdef USING_CHOC
+    std::unique_ptr<choc::ui::WebView> webview = std::make_unique<choc::ui::WebView>(choc::ui::WebView());
+    DISTRHO_SAFE_ASSERT_RETURN(webview->loadedOK(), nullptr);
+
+    const HWND handle = static_cast<HWND>(webview->getViewHandle());
+    DISTRHO_SAFE_ASSERT_RETURN(handle != nullptr, nullptr);
+
+    char url[32] = {};
+    std::snprintf(url, 31, "http://127.0.0.1:%u/", port);
+    webview->navigate(url);
+
+    auto flags = GetWindowLongPtr(handle, -16);
+    flags = (flags & ~(decltype (flags)) WS_POPUP) | (decltype (flags)) WS_CHILD;
+    SetWindowLongPtr(handle, -16, flags);
+
+    SetParent(handle, reinterpret_cast<HWND>(parentWinId));
+    SetWindowPos(handle, nullptr,
+                 0, kVerticalOffset * scaleFactor,
+                 DISTRHO_UI_DEFAULT_WIDTH * scaleFactor,
+                 (DISTRHO_UI_DEFAULT_HEIGHT - kVerticalOffset) * scaleFactor,
+                 SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
+    ShowWindow(handle, SW_SHOW);
+
+    return webview.release();
+#else
     return nullptr;
+#endif
 }
 
 void destroyWebView(void* const webviewptr)
 {
+#ifdef USING_CHOC
+    delete static_cast<choc::ui::WebView*>(webviewptr);
+#endif
 }
 
-void reloadWebView(void* const webviewptr)
+void reloadWebView(void* const webviewptr, const uint port)
 {
+#ifdef USING_CHOC
+    choc::ui::WebView* const webview = static_cast<choc::ui::WebView*>(webviewptr);
+
+    char url[32] = {};
+    std::snprintf(url, 31, "http://127.0.0.1:%u/", port);
+    webview->navigate(url);
+#endif
 }
 
 void resizeWebView(void* const webviewptr, const uint offset, const uint width, const uint height)
 {
+#ifdef USING_CHOC
+    choc::ui::WebView* const webview = static_cast<choc::ui::WebView*>(webviewptr);
+
+    const HWND handle = static_cast<HWND>(webview->getViewHandle());
+    SetWindowPos(handle, nullptr, 0, offset, width, height, SWP_NOZORDER | SWP_NOACTIVATE);
+#endif
 }
 
 // -----------------------------------------------------------------------------------------------------------

src/plugin/WebViewX11.cpp

@@ -107,7 +107,7 @@ void destroyWebView(void* const webviewptr)
     delete ipc;
 }
 
-void reloadWebView(void* const webviewptr)
+void reloadWebView(void* const webviewptr, uint)
 {
     WebViewX11* const ipc = static_cast<WebViewX11*>(webviewptr);
 

src/plugin/utils.cpp

@@ -96,6 +96,7 @@ static const char* getDataDir()
 #ifdef _WIN32
 static const wchar_t* getAppDirW()
 {
+    // return L"Z:\\home\\falktx\\Source\\MOD\\mod-app\\build";
     static wchar_t appDir[MAX_PATH] = {};
 
     if (appDir[0] == 0)
@@ -126,7 +127,7 @@ const char* getAppDir()
 
         if (FILE* const f = std::fopen(appDir, "r"))
         {
-            std::memset(appDir, 0, PATH_MAX - 1);
+            std::memset(appDir, 0, sizeof(appDir));
 
             if (std::fread(appDir, PATH_MAX - 1, 1, f) != 0)
                 appDir[0] = 0;
@@ -250,8 +251,7 @@ char* const* getEvironment(const uint portBaseNum)
    #endif
 
     // can be null, in case of not found
-    if (appDir == nullptr)
-        return nullptr;
+    DISTRHO_SAFE_ASSERT_RETURN(appDir != nullptr, nullptr);
 
    #ifdef DISTRHO_OS_MAC
     const char* const* const* const environptr = _NSGetEnviron();
@@ -267,14 +267,14 @@ char* const* getEvironment(const uint portBaseNum)
 
     if (wchar_t* const envs = GetEnvironmentStringsW())
     {
-        for (wchar_t* envsi = envs; *envsi != '\0'; envsi += (std::wcslen(envsi) + 1))
+        for (wchar_t* s = envs; *s != 0; s += std::wcslen(s) + 1)
             ++envsize;
 
         envpl = new wchar_t*[envsize + 32];
 
         uint i = 0;
-        for (wchar_t* envsi = envs; *envsi != '\0'; envsi += (std::wcslen(envsi) + 1))
-            envpl[i] = _wcsdup(envsi);
+        for (wchar_t* s = envs; *s != 0; s += std::wcslen(s) + 1, ++i)
+            envpl[i] = _wcsdup(s);
 
         FreeEnvironmentStringsW(envs);
     }