The Tor Browser: dom/plugins/test/testplugin/nptest_windows.cpp@b8a032363ba2 (annotated)

dom/plugins/test/testplugin/nptest_windows.cpp@b8a032363ba2 (annotated)

dom/plugins/test/testplugin/nptest_windows.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* ***** BEGIN LICENSE BLOCK *****
  *
  * Copyright (c) 2008, Mozilla Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * * Redistributions of source code must retain the above copyright notice, this
  *   list of conditions and the following disclaimer.
  * * Redistributions in binary form must reproduce the above copyright notice,
  *   this list of conditions and the following disclaimer in the documentation
  *   and/or other materials provided with the distribution.
  * * Neither the name of the Mozilla Corporation nor the names of its
  *   contributors may be used to endorse or promote products derived from this
  *   software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Contributor(s):
  *   Josh Aas <josh@mozilla.com>
  *   Jim Mathies <jmathies@mozilla.com>
  *
  * ***** END LICENSE BLOCK ***** */
 #include "nptest_platform.h"
 #include <windows.h>
 #include <windowsx.h>
 #include <stdio.h>
 #include <d3d10_1.h>
 using namespace std;
 void SetSubclass(HWND hWnd, InstanceData* instanceData);
 void ClearSubclass(HWND hWnd);
 LRESULT CALLBACK PluginWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 struct _PlatformData {
   HWND childWindow;
   ID3D10Device1 *device;
   ID3D10Texture2D *frontBuffer;
   ID3D10Texture2D *backBuffer;
 };
 bool
 pluginSupportsWindowMode()
 {
   return true;
 }
 bool
 pluginSupportsWindowlessMode()
 {
   return true;
 }
 bool
 pluginSupportsAsyncBitmapDrawing()
 {
   return true;
 }
 NPError
 pluginInstanceInit(InstanceData* instanceData)
 {
   NPP npp = instanceData->npp;
   instanceData->platformData = static_cast<PlatformData*>
     (NPN_MemAlloc(sizeof(PlatformData)));
   if (!instanceData->platformData)
     return NPERR_OUT_OF_MEMORY_ERROR;
   instanceData->platformData->childWindow = nullptr;
   instanceData->platformData->device = nullptr;
   instanceData->platformData->frontBuffer = nullptr;
   instanceData->platformData->backBuffer = nullptr;
   return NPERR_NO_ERROR;
 }
 void
 pluginInstanceShutdown(InstanceData* instanceData)
 {
   PlatformData *pd = instanceData->platformData;
   if (pd->frontBuffer) {
     pd->frontBuffer->Release();
   }
   if (pd->backBuffer) {
     pd->backBuffer->Release();
   }
   if (pd->device) {
     pd->device->Release();
   }
   NPN_MemFree(instanceData->platformData);
   instanceData->platformData = 0;
 }
 static ID3D10Device1*
 getD3D10Device()
 {
   ID3D10Device1 *device;
   HMODULE d3d10module = LoadLibraryA("d3d10_1.dll");
   decltype(D3D10CreateDevice1)* createD3DDevice =
       (decltype(D3D10CreateDevice1)*) GetProcAddress(d3d10module,
                                                      "D3D10CreateDevice1");
   if (createD3DDevice) {
     HMODULE dxgiModule = LoadLibraryA("dxgi.dll");
     decltype(CreateDXGIFactory1)* createDXGIFactory1 =
         (decltype(CreateDXGIFactory1)*) GetProcAddress(dxgiModule,
                                                        "CreateDXGIFactory1");
     HRESULT hr;
     // Try to use a DXGI 1.1 adapter in order to share resources
     // across processes.
     IDXGIAdapter1 *adapter1;
     if (createDXGIFactory1) {
       IDXGIFactory1 *factory1;
       hr = createDXGIFactory1(__uuidof(IDXGIFactory1),
                               (void**)&factory1);
       if (FAILED(hr) || !factory1) {
         // Uh-oh
         return nullptr;
       }
       hr = factory1->EnumAdapters1(0, &adapter1);
       if (SUCCEEDED(hr) && adapter1) {
         hr = adapter1->CheckInterfaceSupport(__uuidof(ID3D10Device),
                                              nullptr);
         if (FAILED(hr)) {
             adapter1 = nullptr;
         }
       }
       factory1->Release();
     }
     hr = createD3DDevice(
           adapter1,
           D3D10_DRIVER_TYPE_HARDWARE,
           nullptr,
           D3D10_CREATE_DEVICE_BGRA_SUPPORT |
           D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
           D3D10_FEATURE_LEVEL_10_0,
           D3D10_1_SDK_VERSION,
           &device);
     adapter1->Release();
   }
   return device;
 }
 void
 pluginDoSetWindow(InstanceData* instanceData, NPWindow* newWindow)
 {
   instanceData->window = *newWindow;
   NPP npp = instanceData->npp;
   if (instanceData->asyncDrawing == AD_DXGI) {
     if (instanceData->frontBuffer &&
         instanceData->frontBuffer->size.width == newWindow->width &&
         instanceData->frontBuffer->size.height == newWindow->height) {
           return;
     }
     if (instanceData->frontBuffer) {
       instanceData->platformData->frontBuffer->Release();
       instanceData->platformData->frontBuffer = nullptr;
       NPN_FinalizeAsyncSurface(npp, instanceData->frontBuffer);
       NPN_MemFree(instanceData->frontBuffer);
     }
     if (instanceData->backBuffer) {
       instanceData->platformData->backBuffer->Release();
       instanceData->platformData->backBuffer = nullptr;
       NPN_FinalizeAsyncSurface(npp, instanceData->backBuffer);
       NPN_MemFree(instanceData->backBuffer);
     }
     if (!instanceData->platformData->device) {
       instanceData->platformData->device = getD3D10Device();
     }
     ID3D10Device1 *dev = instanceData->platformData->device;
     if (!dev) {
       return;
     }
     instanceData->frontBuffer = (NPAsyncSurface*)NPN_MemAlloc(sizeof(NPAsyncSurface));
     instanceData->backBuffer = (NPAsyncSurface*)NPN_MemAlloc(sizeof(NPAsyncSurface));
     NPSize size;
     size.width = newWindow->width;
     size.height = newWindow->height;
     memset(instanceData->frontBuffer, 0, sizeof(NPAsyncSurface));
     memset(instanceData->backBuffer, 0, sizeof(NPAsyncSurface));
     NPN_InitAsyncSurface(npp, &size, NPImageFormatBGRA32, nullptr, instanceData->frontBuffer);
     NPN_InitAsyncSurface(npp, &size, NPImageFormatBGRA32, nullptr, instanceData->backBuffer);
     dev->OpenSharedResource(instanceData->frontBuffer->sharedHandle, __uuidof(ID3D10Texture2D), (void**)&instanceData->platformData->frontBuffer);
     dev->OpenSharedResource(instanceData->backBuffer->sharedHandle, __uuidof(ID3D10Texture2D), (void**)&instanceData->platformData->backBuffer);
     pluginDrawAsyncDxgiColor(instanceData);
   }
 }
 #define CHILD_WIDGET_SIZE 10
 void
 pluginWidgetInit(InstanceData* instanceData, void* oldWindow)
 {
   HWND hWnd = (HWND)instanceData->window.window;
   if (oldWindow) {
     // chrashtests/539897-1.html excercises this code
     HWND hWndOld = (HWND)oldWindow;
     ClearSubclass(hWndOld);
     if (instanceData->platformData->childWindow) {
       ::DestroyWindow(instanceData->platformData->childWindow);
     }
   }
   SetSubclass(hWnd, instanceData);
   instanceData->platformData->childWindow =
     ::CreateWindowW(L"SCROLLBAR", L"Dummy child window",
                     WS_CHILD, 0, 0, CHILD_WIDGET_SIZE, CHILD_WIDGET_SIZE, hWnd, nullptr,
                     nullptr, nullptr);
 }
 static void
 drawToDC(InstanceData* instanceData, HDC dc,
          int x, int y, int width, int height)
 {
   switch (instanceData->scriptableObject->drawMode) {
     case DM_DEFAULT:
     {
       const RECT fill = { x, y, x + width, y + height };
       int oldBkMode = ::SetBkMode(dc, TRANSPARENT);
       HBRUSH brush = ::CreateSolidBrush(RGB(0, 0, 0));
       if (brush) {
         ::FillRect(dc, &fill, brush);
         ::DeleteObject(brush);
       }
       if (width > 6 && height > 6) {
         brush = ::CreateSolidBrush(RGB(192, 192, 192));
         if (brush) {
           RECT inset = { x + 3, y + 3, x + width - 3, y + height - 3 };
           ::FillRect(dc, &inset, brush);
           ::DeleteObject(brush);
         }
       }
       const char* uaString = NPN_UserAgent(instanceData->npp);
       if (uaString && width > 10 && height > 10) {
         HFONT font =
           ::CreateFontA(20, 0, 0, 0, 400, FALSE, FALSE, FALSE,
                         DEFAULT_CHARSET, OUT_DEFAULT_PRECIS,
                         CLIP_DEFAULT_PRECIS, 5, // CLEARTYPE_QUALITY
                         DEFAULT_PITCH, "Arial");
         if (font) {
           HFONT oldFont = (HFONT)::SelectObject(dc, font);
           RECT inset = { x + 5, y + 5, x + width - 5, y + height - 5 };
           ::DrawTextA(dc, uaString, -1, &inset,
                       DT_LEFT | DT_TOP | DT_NOPREFIX | DT_WORDBREAK);
           ::SelectObject(dc, oldFont);
           ::DeleteObject(font);
         }
       }
       ::SetBkMode(dc, oldBkMode);
     }
     break;
     case DM_SOLID_COLOR:
     {
       HDC offscreenDC = ::CreateCompatibleDC(dc);
       if (!offscreenDC)
 	return;
       const BITMAPV4HEADER bitmapheader = {
 	sizeof(BITMAPV4HEADER),
 	width,
 	height,
 , // planes
 , // bits
 	BI_BITFIELDS,
 , // unused size
 , 0, // unused metrics
 , 0, // unused colors used/important
 x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000, // ARGB masks
       };
       uint32_t *pixelData;
       HBITMAP offscreenBitmap =
 	::CreateDIBSection(dc, reinterpret_cast<const BITMAPINFO*>(&bitmapheader),
 , reinterpret_cast<void**>(&pixelData), 0, 0);
       if (!offscreenBitmap)
 	return;
       uint32_t rgba = instanceData->scriptableObject->drawColor;
       unsigned int alpha = ((rgba & 0xFF000000) >> 24);
       BYTE r = ((rgba & 0xFF0000) >> 16);
       BYTE g = ((rgba & 0xFF00) >> 8);
       BYTE b = (rgba & 0xFF);
       // Windows expects premultiplied
       r = BYTE(float(alpha * r) / 0xFF);
       g = BYTE(float(alpha * g) / 0xFF);
       b = BYTE(float(alpha * b) / 0xFF);
       uint32_t premultiplied =
 	(alpha << 24) +	(r << 16) + (g << 8) + b;
       for (uint32_t* lastPixel = pixelData + width * height;
 	   pixelData < lastPixel;
 	   ++pixelData)
 	*pixelData = premultiplied;
       ::SelectObject(offscreenDC, offscreenBitmap);
       BLENDFUNCTION blendFunc;
       blendFunc.BlendOp = AC_SRC_OVER;
       blendFunc.BlendFlags = 0;
       blendFunc.SourceConstantAlpha = 255;
       blendFunc.AlphaFormat = AC_SRC_ALPHA;
       ::AlphaBlend(dc, x, y, width, height, offscreenDC, 0, 0, width, height,
 		   blendFunc);
       ::DeleteObject(offscreenDC);
       ::DeleteObject(offscreenBitmap);
     }
     break;
   }
 }
 void
 pluginDraw(InstanceData* instanceData)
 {
   NPP npp = instanceData->npp;
   if (!npp)
     return;
   HDC hdc = nullptr;
   PAINTSTRUCT ps;
   notifyDidPaint(instanceData);
   if (instanceData->hasWidget)
     hdc = ::BeginPaint((HWND)instanceData->window.window, &ps);
   else
     hdc = (HDC)instanceData->window.window;
   if (hdc == nullptr)
     return;
   // Push the browser's hdc on the resource stack. If this test plugin is windowless,
   // we share the drawing surface with the rest of the browser.
   int savedDCID = SaveDC(hdc);
   // When we have a widget, window.x/y are meaningless since our widget
   // is always positioned correctly and we just draw into it at 0,0.
   int x = instanceData->hasWidget ? 0 : instanceData->window.x;
   int y = instanceData->hasWidget ? 0 : instanceData->window.y;
   int width = instanceData->window.width;
   int height = instanceData->window.height;
   drawToDC(instanceData, hdc, x, y, width, height);
   // Pop our hdc changes off the resource stack
   RestoreDC(hdc, savedDCID);
   if (instanceData->hasWidget)
     ::EndPaint((HWND)instanceData->window.window, &ps);
 }
 /* script interface */
 int32_t
 pluginGetEdge(InstanceData* instanceData, RectEdge edge)
 {
   if (!instanceData || !instanceData->hasWidget)
     return NPTEST_INT32_ERROR;
   // Get the plugin client rect in screen coordinates
   RECT rect = {0};
   if (!::GetClientRect((HWND)instanceData->window.window, &rect))
     return NPTEST_INT32_ERROR;
   ::MapWindowPoints((HWND)instanceData->window.window, nullptr,
                     (LPPOINT)&rect, 2);
   // Get the toplevel window frame rect in screen coordinates
   HWND rootWnd = ::GetAncestor((HWND)instanceData->window.window, GA_ROOT);
   if (!rootWnd)
     return NPTEST_INT32_ERROR;
   RECT rootRect;
   if (!::GetWindowRect(rootWnd, &rootRect))
     return NPTEST_INT32_ERROR;
   switch (edge) {
   case EDGE_LEFT:
     return rect.left - rootRect.left;
   case EDGE_TOP:
     return rect.top - rootRect.top;
   case EDGE_RIGHT:
     return rect.right - rootRect.left;
   case EDGE_BOTTOM:
     return rect.bottom - rootRect.top;
   }
   return NPTEST_INT32_ERROR;
 }
 static BOOL
 getWindowRegion(HWND wnd, HRGN rgn)
 {
   if (::GetWindowRgn(wnd, rgn) != ERROR)
     return TRUE;
   RECT clientRect;
   if (!::GetClientRect(wnd, &clientRect))
     return FALSE;
   return ::SetRectRgn(rgn, 0, 0, clientRect.right, clientRect.bottom);
 }
 static RGNDATA*
 computeClipRegion(InstanceData* instanceData)
 {
   HWND wnd = (HWND)instanceData->window.window;
   HRGN rgn = ::CreateRectRgn(0, 0, 0, 0);
   if (!rgn)
     return nullptr;
   HRGN ancestorRgn = ::CreateRectRgn(0, 0, 0, 0);
   if (!ancestorRgn) {
     ::DeleteObject(rgn);
     return nullptr;
   }
   if (!getWindowRegion(wnd, rgn)) {
     ::DeleteObject(ancestorRgn);
     ::DeleteObject(rgn);
     return nullptr;
   }
   HWND ancestor = wnd;
   for (;;) {
     ancestor = ::GetAncestor(ancestor, GA_PARENT);
     if (!ancestor || ancestor == ::GetDesktopWindow()) {
       ::DeleteObject(ancestorRgn);
       DWORD size = ::GetRegionData(rgn, 0, nullptr);
       if (!size) {
         ::DeleteObject(rgn);
         return nullptr;
       }
       HANDLE heap = ::GetProcessHeap();
       RGNDATA* data = static_cast<RGNDATA*>(::HeapAlloc(heap, 0, size));
       if (!data) {
         ::DeleteObject(rgn);
         return nullptr;
       }
       DWORD result = ::GetRegionData(rgn, size, data);
       ::DeleteObject(rgn);
       if (!result) {
         ::HeapFree(heap, 0, data);
         return nullptr;
       }
       return data;
     }
     if (!getWindowRegion(ancestor, ancestorRgn)) {
       ::DeleteObject(ancestorRgn);
       ::DeleteObject(rgn);
       return 0;
     }
     POINT pt = { 0, 0 };
     ::MapWindowPoints(ancestor, wnd, &pt, 1);
     if (::OffsetRgn(ancestorRgn, pt.x, pt.y) == ERROR ||
         ::CombineRgn(rgn, rgn, ancestorRgn, RGN_AND) == ERROR) {
       ::DeleteObject(ancestorRgn);
       ::DeleteObject(rgn);
       return 0;
     }
   }
 }
 int32_t
 pluginGetClipRegionRectCount(InstanceData* instanceData)
 {
   RGNDATA* data = computeClipRegion(instanceData);
   if (!data)
     return NPTEST_INT32_ERROR;
   int32_t result = data->rdh.nCount;
   ::HeapFree(::GetProcessHeap(), 0, data);
   return result;
 }
 static int32_t
 addOffset(LONG coord, int32_t offset)
 {
   if (offset == NPTEST_INT32_ERROR)
     return NPTEST_INT32_ERROR;
   return coord + offset;
 }
 int32_t
 pluginGetClipRegionRectEdge(InstanceData* instanceData,
     int32_t rectIndex, RectEdge edge)
 {
   RGNDATA* data = computeClipRegion(instanceData);
   if (!data)
     return NPTEST_INT32_ERROR;
   HANDLE heap = ::GetProcessHeap();
   if (rectIndex >= int32_t(data->rdh.nCount)) {
     ::HeapFree(heap, 0, data);
     return NPTEST_INT32_ERROR;
   }
   RECT rect = reinterpret_cast<RECT*>(data->Buffer)[rectIndex];
   ::HeapFree(heap, 0, data);
   switch (edge) {
   case EDGE_LEFT:
     return addOffset(rect.left, pluginGetEdge(instanceData, EDGE_LEFT));
   case EDGE_TOP:
     return addOffset(rect.top, pluginGetEdge(instanceData, EDGE_TOP));
   case EDGE_RIGHT:
     return addOffset(rect.right, pluginGetEdge(instanceData, EDGE_LEFT));
   case EDGE_BOTTOM:
     return addOffset(rect.bottom, pluginGetEdge(instanceData, EDGE_TOP));
   }
   return NPTEST_INT32_ERROR;
 }
 /* windowless plugin events */
 static bool
 handleEventInternal(InstanceData* instanceData, NPEvent* pe, LRESULT* result)
 {
   switch ((UINT)pe->event) {
     case WM_PAINT:
       pluginDraw(instanceData);
       return true;
     case WM_MOUSEACTIVATE:
       if (instanceData->hasWidget) {
         ::SetFocus((HWND)instanceData->window.window);
         *result = MA_ACTIVATEANDEAT;
         return true;
       }
       return false;
     case WM_MOUSEWHEEL:
       return true;
     case WM_WINDOWPOSCHANGED: {
       WINDOWPOS* pPos = (WINDOWPOS*)pe->lParam;
       instanceData->winX = instanceData->winY = 0;
       if (pPos) {
         instanceData->winX = pPos->x;
         instanceData->winY = pPos->y;
         return true;
       }
       return false;
     }
     case WM_MOUSEMOVE:
     case WM_LBUTTONDOWN:
     case WM_LBUTTONUP:
     case WM_MBUTTONDOWN:
     case WM_MBUTTONUP:
     case WM_RBUTTONDOWN:
     case WM_RBUTTONUP: {
       int x = instanceData->hasWidget ? 0 : instanceData->winX;
       int y = instanceData->hasWidget ? 0 : instanceData->winY;
       instanceData->lastMouseX = GET_X_LPARAM(pe->lParam) - x;
       instanceData->lastMouseY = GET_Y_LPARAM(pe->lParam) - y;
       if ((UINT)pe->event == WM_LBUTTONUP) {
         instanceData->mouseUpEventCount++;
       }
       return true;
     }
     case WM_KEYDOWN:
       instanceData->lastKeyText.erase();
       *result = 0;
       return true;
     case WM_CHAR: {
       *result = 0;
       wchar_t uniChar = static_cast<wchar_t>(pe->wParam);
       if (!uniChar) {
         return true;
       }
       char utf8Char[6];
       int len =
         ::WideCharToMultiByte(CP_UTF8, 0, &uniChar, 1, utf8Char, 6,
                               nullptr, nullptr);
       if (len == 0 || len > 6) {
         return true;
       }
       instanceData->lastKeyText.append(utf8Char, len);
       return true;
     }
     default:
       return false;
   }
 }
 int16_t
 pluginHandleEvent(InstanceData* instanceData, void* event)
 {
   NPEvent* pe = (NPEvent*)event;
   if (pe == nullptr || instanceData == nullptr ||
       instanceData->window.type != NPWindowTypeDrawable)
     return 0;
   LRESULT result = 0;
   return handleEventInternal(instanceData, pe, &result);
 }
 /* windowed plugin events */
 LRESULT CALLBACK PluginWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 {
 	WNDPROC wndProc = (WNDPROC)GetProp(hWnd, "MozillaWndProc");
   if (!wndProc)
     return 0;
   InstanceData* pInstance = (InstanceData*)GetProp(hWnd, "InstanceData");
   if (!pInstance)
     return 0;
   NPEvent event = { static_cast<uint16_t>(uMsg), wParam, lParam };
   LRESULT result = 0;
   if (handleEventInternal(pInstance, &event, &result))
     return result;
   if (uMsg == WM_CLOSE) {
     ClearSubclass((HWND)pInstance->window.window);
   }
   return CallWindowProc(wndProc, hWnd, uMsg, wParam, lParam);
 }
 void
 ClearSubclass(HWND hWnd)
 {
   if (GetProp(hWnd, "MozillaWndProc")) {
     ::SetWindowLongPtr(hWnd, GWLP_WNDPROC, (LONG_PTR)GetProp(hWnd, "MozillaWndProc"));
     RemoveProp(hWnd, "MozillaWndProc");
     RemoveProp(hWnd, "InstanceData");
   }
 }
 void
 SetSubclass(HWND hWnd, InstanceData* instanceData)
 {
   // Subclass the plugin window so we can handle our own windows events.
   SetProp(hWnd, "InstanceData", (HANDLE)instanceData);
   WNDPROC origProc = (WNDPROC)::SetWindowLongPtr(hWnd, GWLP_WNDPROC, (LONG_PTR)PluginWndProc);
   SetProp(hWnd, "MozillaWndProc", (HANDLE)origProc);
 }
 static void checkEquals(int a, int b, const char* msg, string& error)
 {
   if (a == b) {
     return;
   }
   error.append(msg);
   char buf[100];
   sprintf(buf, " (got %d, expected %d)\n", a, b);
   error.append(buf);
 }
 void pluginDoInternalConsistencyCheck(InstanceData* instanceData, string& error)
 {
   if (instanceData->platformData->childWindow) {
     RECT childRect;
     ::GetWindowRect(instanceData->platformData->childWindow, &childRect);
     RECT ourRect;
     HWND hWnd = (HWND)instanceData->window.window;
     ::GetWindowRect(hWnd, &ourRect);
     checkEquals(childRect.left, ourRect.left, "Child widget left", error);
     checkEquals(childRect.top, ourRect.top, "Child widget top", error);
     checkEquals(childRect.right, childRect.left + CHILD_WIDGET_SIZE, "Child widget width", error);
     checkEquals(childRect.bottom, childRect.top + CHILD_WIDGET_SIZE, "Child widget height", error);
   }
 }
 void
 pluginDrawAsyncDxgiColor(InstanceData* id)
 {
   PlatformData *pd = id->platformData;
   ID3D10Device1 *dev = pd->device;
   IDXGIKeyedMutex *mutex;
   pd->backBuffer->QueryInterface(&mutex);
   mutex->AcquireSync(0, INFINITE);
   ID3D10RenderTargetView *rtView;
   dev->CreateRenderTargetView(pd->backBuffer, nullptr, &rtView);
   uint32_t rgba = id->scriptableObject->drawColor;
   unsigned char subpixels[4];
   subpixels[0] = rgba & 0xFF;
   subpixels[1] = (rgba & 0xFF00) >> 8;
   subpixels[2] = (rgba & 0xFF0000) >> 16;
   subpixels[3] = (rgba & 0xFF000000) >> 24;
   float color[4];
   color[2] = float(subpixels[3] * subpixels[0]) / 0xFE01;
   color[1] = float(subpixels[3] * subpixels[1]) / 0xFE01;
   color[0] = float(subpixels[3] * subpixels[2]) / 0xFE01;
   color[3] = float(subpixels[3]) / 0xFF;
   dev->ClearRenderTargetView(rtView, color);
   rtView->Release();
   mutex->ReleaseSync(0);
   mutex->Release();
   NPN_SetCurrentAsyncSurface(id->npp, id->backBuffer, nullptr);
   NPAsyncSurface *oldFront = id->frontBuffer;
   id->frontBuffer = id->backBuffer;
   id->backBuffer = oldFront;
   ID3D10Texture2D *oldFrontT = pd->frontBuffer;
   pd->frontBuffer = pd->backBuffer;
   pd->backBuffer = oldFrontT;
 }

The Tor Browser / annotate

dom/plugins/test/testplugin/nptest_windows.cpp@b8a032363ba2 (annotated)

dom/plugins/test/testplugin/nptest_windows.cpp