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Diffstat (limited to '')
| -rw-r--r-- | dom/plugins/test/testplugin/nptest_windows.cpp | 797 |
1 files changed, 797 insertions, 0 deletions
diff --git a/dom/plugins/test/testplugin/nptest_windows.cpp b/dom/plugins/test/testplugin/nptest_windows.cpp new file mode 100644 index 0000000000..0490d23367 --- /dev/null +++ b/dom/plugins/test/testplugin/nptest_windows.cpp @@ -0,0 +1,797 @@ +/* ***** 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> +#include <d2d1.h> + +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; + IDXGIAdapter1* adapter; + ID3D10Device1* device; + ID3D10Texture2D* frontBuffer; + ID3D10Texture2D* backBuffer; + ID2D1Factory* d2d1Factory; +}; + +bool pluginSupportsWindowMode() { return true; } + +bool pluginSupportsWindowlessMode() { return true; } + +NPError pluginInstanceInit(InstanceData* instanceData) { + 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; + instanceData->platformData->adapter = nullptr; + instanceData->platformData->d2d1Factory = nullptr; + return NPERR_NO_ERROR; +} + +static inline bool openSharedTex2D(ID3D10Device* device, HANDLE handle, + ID3D10Texture2D** out) { + HRESULT hr = device->OpenSharedResource(handle, __uuidof(ID3D10Texture2D), + (void**)out); + if (FAILED(hr) || !*out) { + return false; + } + return true; +} + +// This is overloaded in d2d1.h so we can't use decltype(). +typedef HRESULT(WINAPI* D2D1CreateFactoryFunc)( + D2D1_FACTORY_TYPE factoryType, REFIID iid, + CONST D2D1_FACTORY_OPTIONS* pFactoryOptions, void** factory); + +static IDXGIAdapter1* FindDXGIAdapter(NPP npp, IDXGIFactory1* factory) { + DXGI_ADAPTER_DESC preferred; + if (NPN_GetValue(npp, NPNVpreferredDXGIAdapter, &preferred) != + NPERR_NO_ERROR) { + return nullptr; + } + + UINT index = 0; + for (;;) { + IDXGIAdapter1* adapter = nullptr; + if (FAILED(factory->EnumAdapters1(index, &adapter)) || !adapter) { + return nullptr; + } + + DXGI_ADAPTER_DESC desc; + if (SUCCEEDED(adapter->GetDesc(&desc)) && + desc.AdapterLuid.LowPart == preferred.AdapterLuid.LowPart && + desc.AdapterLuid.HighPart == preferred.AdapterLuid.HighPart && + desc.VendorId == preferred.VendorId && + desc.DeviceId == preferred.DeviceId) { + return adapter; + } + + adapter->Release(); + index++; + } +} + +// Note: we leak modules since we need them anyway. +bool setupDxgiSurfaces(NPP npp, InstanceData* instanceData) { + HMODULE dxgi = LoadLibraryA("dxgi.dll"); + if (!dxgi) { + return false; + } + decltype(CreateDXGIFactory1)* createDXGIFactory1 = + (decltype(CreateDXGIFactory1)*)GetProcAddress(dxgi, "CreateDXGIFactory1"); + if (!createDXGIFactory1) { + return false; + } + + IDXGIFactory1* factory1 = nullptr; + HRESULT hr = createDXGIFactory1(__uuidof(IDXGIFactory1), (void**)&factory1); + if (FAILED(hr) || !factory1) { + return false; + } + + instanceData->platformData->adapter = FindDXGIAdapter(npp, factory1); + if (!instanceData->platformData->adapter) { + return false; + } + + HMODULE d3d10 = LoadLibraryA("d3d10_1.dll"); + if (!d3d10) { + return false; + } + + decltype(D3D10CreateDevice1)* createDevice = + (decltype(D3D10CreateDevice1)*)GetProcAddress(d3d10, + "D3D10CreateDevice1"); + if (!createDevice) { + return false; + } + + hr = createDevice( + instanceData->platformData->adapter, D3D10_DRIVER_TYPE_HARDWARE, nullptr, + D3D10_CREATE_DEVICE_BGRA_SUPPORT | + D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS, + D3D10_FEATURE_LEVEL_10_1, D3D10_1_SDK_VERSION, + &instanceData->platformData->device); + if (FAILED(hr) || !instanceData->platformData->device) { + return false; + } + + if (!openSharedTex2D(instanceData->platformData->device, + instanceData->frontBuffer->sharedHandle, + &instanceData->platformData->frontBuffer)) { + return false; + } + if (!openSharedTex2D(instanceData->platformData->device, + instanceData->backBuffer->sharedHandle, + &instanceData->platformData->backBuffer)) { + return false; + } + + HMODULE d2d1 = LoadLibraryA("D2d1.dll"); + if (!d2d1) { + return false; + } + auto d2d1CreateFactory = + (D2D1CreateFactoryFunc)GetProcAddress(d2d1, "D2D1CreateFactory"); + if (!d2d1CreateFactory) { + return false; + } + + D2D1_FACTORY_OPTIONS options; + options.debugLevel = D2D1_DEBUG_LEVEL_NONE; + + hr = d2d1CreateFactory(D2D1_FACTORY_TYPE_MULTI_THREADED, + __uuidof(ID2D1Factory), &options, + (void**)&instanceData->platformData->d2d1Factory); + if (FAILED(hr) || !instanceData->platformData->d2d1Factory) { + return false; + } + + return true; +} + +void drawDxgiBitmapColor(InstanceData* instanceData) { + NPP npp = instanceData->npp; + + HRESULT hr; + + IDXGISurface* surface = nullptr; + hr = instanceData->platformData->backBuffer->QueryInterface( + __uuidof(IDXGISurface), (void**)&surface); + if (FAILED(hr) || !surface) { + return; + } + + D2D1_RENDER_TARGET_PROPERTIES props = D2D1::RenderTargetProperties( + D2D1_RENDER_TARGET_TYPE_DEFAULT, + D2D1::PixelFormat(DXGI_FORMAT_UNKNOWN, D2D1_ALPHA_MODE_PREMULTIPLIED)); + + ID2D1RenderTarget* target = nullptr; + hr = instanceData->platformData->d2d1Factory->CreateDxgiSurfaceRenderTarget( + surface, &props, &target); + if (FAILED(hr) || !target) { + surface->Release(); + return; + } + + IDXGIKeyedMutex* mutex = nullptr; + hr = instanceData->platformData->backBuffer->QueryInterface( + __uuidof(IDXGIKeyedMutex), (void**)&mutex); + if (mutex) { + mutex->AcquireSync(0, 0); + } + + target->BeginDraw(); + + unsigned char subpixels[4]; + memcpy(subpixels, &instanceData->scriptableObject->drawColor, + sizeof(subpixels)); + + auto rect = D2D1::RectF(0, 0, instanceData->backBuffer->size.width, + instanceData->backBuffer->size.height); + auto color = D2D1::ColorF(float(subpixels[3] * subpixels[2]) / 0xFF, + float(subpixels[3] * subpixels[1]) / 0xFF, + float(subpixels[3] * subpixels[0]) / 0xFF, + float(subpixels[3]) / 0xff); + + ID2D1SolidColorBrush* brush = nullptr; + hr = target->CreateSolidColorBrush(color, &brush); + if (SUCCEEDED(hr) && brush) { + target->FillRectangle(rect, brush); + brush->Release(); + brush = nullptr; + } + hr = target->EndDraw(); + + if (mutex) { + mutex->ReleaseSync(0); + mutex->Release(); + mutex = nullptr; + } + + target->Release(); + surface->Release(); + target = nullptr; + surface = nullptr; + + NPN_SetCurrentAsyncSurface(npp, instanceData->backBuffer, NULL); + std::swap(instanceData->backBuffer, instanceData->frontBuffer); + std::swap(instanceData->platformData->backBuffer, + instanceData->platformData->frontBuffer); +} + +void pluginInstanceShutdown(InstanceData* instanceData) { + PlatformData* pd = instanceData->platformData; + if (pd->frontBuffer) { + pd->frontBuffer->Release(); + } + if (pd->backBuffer) { + pd->backBuffer->Release(); + } + if (pd->d2d1Factory) { + pd->d2d1Factory->Release(); + } + if (pd->device) { + pd->device->Release(); + } + if (pd->adapter) { + pd->adapter->Release(); + } + NPN_MemFree(instanceData->platformData); + instanceData->platformData = 0; + ClearSubclass((HWND)instanceData->window.window); +} + +void pluginDoSetWindow(InstanceData* instanceData, NPWindow* newWindow) { + instanceData->window = *newWindow; +} + +#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, + 1, // planes + 32, // bits + BI_BITFIELDS, + 0, // unused size + 0, + 0, // unused metrics + 0, + 0, // unused colors used/important + 0x00FF0000, + 0x0000FF00, + 0x000000FF, + 0xFF000000, // ARGB masks + }; + uint32_t* pixelData; + HBITMAP offscreenBitmap = ::CreateDIBSection( + dc, reinterpret_cast<const BITMAPINFO*>(&bitmapheader), 0, + 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; +} + +static void createDummyWindowForIME(InstanceData* instanceData) { + WNDCLASSW wndClass; + wndClass.style = 0; + wndClass.lpfnWndProc = DefWindowProcW; + wndClass.cbClsExtra = 0; + wndClass.cbWndExtra = 0; + wndClass.hInstance = GetModuleHandleW(NULL); + wndClass.hIcon = nullptr; + wndClass.hCursor = nullptr; + wndClass.hbrBackground = (HBRUSH)COLOR_WINDOW; + wndClass.lpszMenuName = NULL; + wndClass.lpszClassName = L"SWFlash_PlaceholderX"; + RegisterClassW(&wndClass); + + instanceData->placeholderWnd = static_cast<void*>( + CreateWindowW(L"SWFlash_PlaceholderX", L"", WS_CHILD, 0, 0, 0, 0, + HWND_MESSAGE, NULL, GetModuleHandleW(NULL), NULL)); +} + +/* 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; + } + + case WM_IME_STARTCOMPOSITION: + instanceData->lastComposition.erase(); + if (!instanceData->placeholderWnd) { + createDummyWindowForIME(instanceData); + } + return true; + + case WM_IME_ENDCOMPOSITION: + instanceData->lastComposition.erase(); + return true; + + case WM_IME_COMPOSITION: { + if (pe->lParam & GCS_COMPSTR) { + HIMC hIMC = ImmGetContext((HWND)instanceData->placeholderWnd); + if (!hIMC) { + return false; + } + WCHAR compStr[256]; + LONG len = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, compStr, + 256 * sizeof(WCHAR)); + CHAR buffer[256]; + len = ::WideCharToMultiByte(CP_UTF8, 0, compStr, len / sizeof(WCHAR), + buffer, 256, nullptr, nullptr); + instanceData->lastComposition.append(buffer, len); + ::ImmReleaseContext((HWND)instanceData->placeholderWnd, hIMC); + } + 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, std::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, + std::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); + } +} + +bool pluginNativeWidgetIsVisible(InstanceData* instanceData) { + HWND hWnd = (HWND)instanceData->window.window; + wchar_t className[60]; + if (::GetClassNameW(hWnd, className, sizeof(className) / sizeof(char16_t)) && + !wcsicmp(className, L"GeckoPluginWindow")) { + return ::IsWindowVisible(hWnd); + } + // something isn't right, fail the check + return false; +} |