Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 500 insertions, 0 deletions

diff --git a/shell/source/win32/shlxthandler/thumbviewer/thumbviewer.cxx b/shell/source/win32/shlxthandler/thumbviewer/thumbviewer.cxx
new file mode 100644
index 000000000..657664ff5
--- /dev/null
+++ b/shell/source/win32/shlxthandler/thumbviewer/thumbviewer.cxx
@@ -0,0 +1,500 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef DONT_HAVE_GDIPLUS
+
+
+#include <global.hxx>
+
+#include <thumbviewer.hxx>
+#include <shlxthdl.hxx>
+#include <registry.hxx>
+#include <fileextensions.hxx>
+#include <config.hxx>
+#include <zipfile.hxx>
+#include <utilities.hxx>
+
+#include <resource.h>
+
+#include <stdio.h>
+#include <utility>
+#include <stdlib.h>
+
+#include <shellapi.h>
+
+#include <memory>
+
+namespace internal
+{
+    /* The signet.png used for thumbnails of signed documents
+       is contained as resource in this module, the resource
+       id is 2000 */
+    static void LoadSignetImageFromResource(ZipFile::ZipContentBuffer_t& buffer)
+    {
+        HRSRC hrc = FindResourceW(g_hModule, L"#2000", reinterpret_cast<LPWSTR>(RT_RCDATA));
+        DWORD size = SizeofResource(g_hModule, hrc);
+        HGLOBAL hglob = LoadResource(g_hModule, hrc);
+        char* data = static_cast<char*>(LockResource(hglob));
+        buffer = ZipFile::ZipContentBuffer_t(data, data + size);
+    }
+
+    static bool IsSignedDocument(const ZipFile* zipfile)
+    {
+        return zipfile->HasContent("META-INF/documentsignatures.xml");
+    }
+
+    static Gdiplus::Point CalcSignetPosition(
+        const Gdiplus::Rect& canvas, const Gdiplus::Rect& thumbnail_border, const Gdiplus::Rect& signet)
+    {
+        int x = 0;
+        int y = 0;
+        int hoffset = canvas.GetRight() - thumbnail_border.GetRight();
+        int voffset = canvas.GetBottom() - thumbnail_border.GetBottom();
+
+        if (hoffset > voffset)
+        {
+            x = thumbnail_border.GetRight() - signet.GetRight() + min(signet.GetRight() / 2, hoffset);
+            y = thumbnail_border.GetBottom() - signet.GetBottom();
+        }
+        else
+        {
+            x = thumbnail_border.GetRight() - signet.GetRight();
+            y = thumbnail_border.GetBottom() - signet.GetBottom() + min(signet.GetBottom() / 2, voffset);
+        }
+
+        return Gdiplus::Point(x,y);
+    }
+}
+
+namespace {
+
+Gdiplus::Rect CalcScaledAspectRatio(const Gdiplus::Rect& src, const Gdiplus::Rect& dest)
+{
+    Gdiplus::Rect result;
+    if (src.Width >= src.Height)
+        result = Gdiplus::Rect(0, 0, dest.Width, src.Height * dest.Width / src.Width);
+    else
+        result = Gdiplus::Rect(0, 0, src.Width * dest.Height / src.Height, dest.Height);
+
+    return result;
+}
+
+class StreamOnZipBuffer final : public IStream
+{
+public:
+    explicit StreamOnZipBuffer(const ZipFile::ZipContentBuffer_t& zip_buffer);
+
+    // IUnknown
+    virtual ULONG STDMETHODCALLTYPE AddRef() override;
+    virtual ULONG STDMETHODCALLTYPE Release() override;
+    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject) override;
+
+    // IStream
+    virtual HRESULT STDMETHODCALLTYPE Read(void *pv, ULONG cb, ULONG *pcbRead) override;
+    virtual HRESULT STDMETHODCALLTYPE Write(void const *pv, ULONG cb, ULONG *pcbWritten) override;
+    virtual HRESULT STDMETHODCALLTYPE Seek(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *plibNewPosition) override;
+    virtual HRESULT STDMETHODCALLTYPE SetSize(ULARGE_INTEGER libNewSize) override;
+    virtual HRESULT STDMETHODCALLTYPE CopyTo(IStream *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER *pcbRead, ULARGE_INTEGER *pcbWritten) override;
+    virtual HRESULT STDMETHODCALLTYPE Commit(DWORD grfCommitFlags) override;
+    virtual HRESULT STDMETHODCALLTYPE Revert() override;
+    virtual HRESULT STDMETHODCALLTYPE LockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) override;
+    virtual HRESULT STDMETHODCALLTYPE UnlockRegion(ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) override;
+    virtual HRESULT STDMETHODCALLTYPE Stat(STATSTG *pstatstg, DWORD grfStatFlag) override;
+    virtual HRESULT STDMETHODCALLTYPE Clone(IStream **ppstm) override;
+
+private:
+    LONG ref_count_;
+    const ZipFile::ZipContentBuffer_t& ref_zip_buffer_;
+    size_t pos_;
+};
+
+}
+
+StreamOnZipBuffer::StreamOnZipBuffer(const ZipFile::ZipContentBuffer_t& zip_buffer) :
+    ref_count_(1),
+    ref_zip_buffer_(zip_buffer),
+    pos_(0)
+{
+}
+
+// IUnknown methods
+
+ULONG STDMETHODCALLTYPE StreamOnZipBuffer::AddRef()
+{
+    return InterlockedIncrement(&ref_count_);
+}
+
+ULONG STDMETHODCALLTYPE StreamOnZipBuffer::Release()
+{
+    LONG refcnt = InterlockedDecrement(&ref_count_);
+
+    if (0 == ref_count_)
+        delete this;
+
+    return refcnt;
+}
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject)
+{
+    *ppvObject = nullptr;
+    IUnknown* pUnk = nullptr;
+
+    if ((IID_IUnknown == riid) || (IID_IStream == riid))
+    {
+        pUnk = this;
+        pUnk->AddRef();
+        *ppvObject = pUnk;
+        return S_OK;
+    }
+    return E_NOINTERFACE;
+}
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::Read(void *pv, ULONG cb, ULONG *pcbRead)
+{
+    if (pv == nullptr)
+        return STG_E_INVALIDPOINTER;
+
+    size_t size = ref_zip_buffer_.size();
+
+    if (pos_ > size)
+        return S_FALSE;
+
+    char* p = static_cast<char*>(pv);
+    ULONG read = 0;
+
+    for ( ;(pos_ < size) && (cb > 0); pos_++, cb--, read++)
+        *p++ = ref_zip_buffer_[pos_];
+
+    if (pcbRead)
+        *pcbRead = read;
+
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::Seek(LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *)
+{
+    __int64 size = static_cast<__int64>(ref_zip_buffer_.size());
+    __int64 p = 0;
+
+    switch (dwOrigin)
+    {
+        case STREAM_SEEK_SET:
+            break;
+        case STREAM_SEEK_CUR:
+            p = static_cast<__int64>(pos_);
+            break;
+        case STREAM_SEEK_END:
+            p = size - 1;
+            break;
+    }
+
+    HRESULT hr = STG_E_INVALIDFUNCTION;
+
+    p += dlibMove.QuadPart;
+
+    if ( ( p >= 0 ) && (p < size) )
+    {
+        pos_ = static_cast<size_t>(p);
+        hr = S_OK;
+    }
+    return hr;
+}
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::Stat(STATSTG *pstatstg, DWORD grfStatFlag)
+{
+    if (pstatstg == nullptr)
+        return STG_E_INVALIDPOINTER;
+
+    ZeroMemory(pstatstg, sizeof(STATSTG));
+
+    if (grfStatFlag == STATFLAG_DEFAULT)
+    {
+        size_t sz = 4 * sizeof(wchar_t);
+        wchar_t* name = static_cast<wchar_t*>(CoTaskMemAlloc(sz));
+        ZeroMemory(name, sz);
+        memcpy(name, L"png", 3 * sizeof(wchar_t));
+        pstatstg->pwcsName = name;
+    }
+
+    pstatstg->type = STGTY_LOCKBYTES;
+
+    ULARGE_INTEGER uli;
+    uli.LowPart = static_cast<DWORD>(ref_zip_buffer_.size());
+    uli.HighPart = 0;
+
+    pstatstg->cbSize = uli;
+
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::Write(void const *, ULONG, ULONG *)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::SetSize(ULARGE_INTEGER)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::CopyTo(IStream *, ULARGE_INTEGER, ULARGE_INTEGER *, ULARGE_INTEGER *)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::Commit(DWORD)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::Revert()
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::LockRegion(ULARGE_INTEGER, ULARGE_INTEGER, DWORD)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::UnlockRegion(ULARGE_INTEGER, ULARGE_INTEGER, DWORD)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE StreamOnZipBuffer::Clone(IStream **)
+{  return E_NOTIMPL; }
+
+
+CThumbviewer::CThumbviewer(LONG RefCnt) :
+    ref_count_(RefCnt)
+{
+    InterlockedIncrement(&g_DllRefCnt);
+
+    thumbnail_size_.cx = 0;
+    thumbnail_size_.cy = 0;
+
+    Gdiplus::GdiplusStartupInput gdiplusStartupInput;
+    Gdiplus::GdiplusStartup(&gdiplus_token_, &gdiplusStartupInput, nullptr);
+
+    ZipFile::ZipContentBuffer_t img_data;
+    internal::LoadSignetImageFromResource(img_data);
+    IStream* stream = new StreamOnZipBuffer(img_data);
+    signet_ = new Gdiplus::Bitmap(stream, TRUE);
+    stream->Release();
+}
+
+CThumbviewer::~CThumbviewer()
+{
+    delete signet_;
+    Gdiplus::GdiplusShutdown(gdiplus_token_);
+    InterlockedDecrement(&g_DllRefCnt);
+}
+
+// IUnknown methods
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject)
+{
+    *ppvObject = nullptr;
+    IUnknown* pUnk = nullptr;
+
+    if ((IID_IUnknown == riid) || (IID_IPersistFile == riid))
+    {
+        pUnk = static_cast<IPersistFile*>(this);
+        pUnk->AddRef();
+        *ppvObject = pUnk;
+        return S_OK;
+    }
+    else if (IID_IExtractImage == riid)
+    {
+        pUnk = static_cast<IExtractImage*>(this);
+        pUnk->AddRef();
+        *ppvObject = pUnk;
+        return S_OK;
+    }
+    return E_NOINTERFACE;
+}
+
+ULONG STDMETHODCALLTYPE CThumbviewer::AddRef()
+{
+    return InterlockedIncrement(&ref_count_);
+}
+
+ULONG STDMETHODCALLTYPE CThumbviewer::Release()
+{
+    LONG refcnt = InterlockedDecrement(&ref_count_);
+
+    if (0 == ref_count_)
+        delete this;
+
+    return refcnt;
+}
+
+// IExtractImage2 methods
+
+const std::string THUMBNAIL_CONTENT = "Thumbnails/thumbnail.png";
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::Extract(HBITMAP *phBmpImage)
+{
+    HRESULT hr = E_FAIL;
+
+    try
+    {
+        std::wstring fname = getShortPathName( filename_ );
+        std::unique_ptr<ZipFile> zipfile( new ZipFile( fname ) );
+
+        if (zipfile->HasContent(THUMBNAIL_CONTENT))
+        {
+            ZipFile::ZipContentBuffer_t thumbnail;
+            zipfile->GetUncompressedContent(THUMBNAIL_CONTENT, thumbnail);
+            IStream* stream = new StreamOnZipBuffer(thumbnail);
+
+            Gdiplus::Bitmap thumbnail_png(stream, TRUE);
+
+            if ((thumbnail_png.GetHeight() == 0) || (thumbnail_png.GetWidth() == 0))
+            {
+                stream->Release();
+                return E_FAIL;
+            }
+
+            HWND hwnd = GetDesktopWindow();
+            HDC hdc = GetDC(hwnd);
+            HDC memDC = CreateCompatibleDC(hdc);
+
+            if (memDC)
+            {
+                UINT offset = 3; // reserve a little border space
+
+                Gdiplus::Rect canvas(0, 0, thumbnail_size_.cx, thumbnail_size_.cy);
+                Gdiplus::Rect canvas_thumbnail(offset, offset, thumbnail_size_.cx - 2 * offset, thumbnail_size_.cy - 2 * offset);
+
+                Gdiplus::Rect scaledRect = CalcScaledAspectRatio(
+                    Gdiplus::Rect(0, 0, thumbnail_png.GetWidth(), thumbnail_png.GetHeight()), canvas_thumbnail);
+
+                struct {
+                    BITMAPINFOHEADER bi;
+                    DWORD ct[256];
+                } dib;
+
+                ZeroMemory(&dib, sizeof(dib));
+
+                dib.bi.biSize = sizeof(BITMAPINFOHEADER);
+                dib.bi.biWidth = thumbnail_size_.cx;
+                dib.bi.biHeight = thumbnail_size_.cy;
+                dib.bi.biPlanes = 1;
+                dib.bi.biBitCount = static_cast<WORD>(color_depth_);
+                dib.bi.biCompression = BI_RGB;
+
+                LPVOID lpBits;
+                HBITMAP hMemBmp = CreateDIBSection(memDC, reinterpret_cast<LPBITMAPINFO>(&dib), DIB_RGB_COLORS, &lpBits, nullptr, 0);
+                HGDIOBJ hOldObj = SelectObject(memDC, hMemBmp);
+
+                Gdiplus::Graphics graphics(memDC);
+                Gdiplus::Pen blackPen(Gdiplus::Color(255, 0, 0, 0), 1);
+
+                Gdiplus::SolidBrush whiteBrush(Gdiplus::Color(255, 255, 255, 255));
+                graphics.FillRectangle(&whiteBrush, canvas);
+
+                scaledRect.X = (canvas.Width - scaledRect.Width) / 2;
+                scaledRect.Y = (canvas.Height - scaledRect.Height) / 2;
+
+                Gdiplus::Rect border_rect(scaledRect.X, scaledRect.Y, scaledRect.Width, scaledRect.Height);
+                graphics.DrawRectangle(&blackPen, border_rect);
+
+                scaledRect.X += 1;
+                scaledRect.Y += 1;
+                scaledRect.Width -= 1;
+                scaledRect.Height -= 1;
+
+                graphics.SetInterpolationMode(Gdiplus::InterpolationModeHighQualityBicubic);
+                Gdiplus::Status stat = graphics.DrawImage(
+                    &thumbnail_png, scaledRect, 0 , 0,
+                    thumbnail_png.GetWidth(), thumbnail_png.GetHeight(), Gdiplus::UnitPixel);
+
+                /* Add a signet sign to the thumbnail of signed documents */
+                if (internal::IsSignedDocument(zipfile.get()))
+                {
+                    double SCALING_FACTOR = 0.6;
+                    Gdiplus::Rect signet_scaled(
+                        0, 0, static_cast<INT>(signet_->GetWidth() * SCALING_FACTOR), static_cast<INT>(signet_->GetHeight() * SCALING_FACTOR));
+                    Gdiplus::Point pos_signet = internal::CalcSignetPosition(canvas_thumbnail, border_rect, signet_scaled);
+                    Gdiplus::Rect dest(pos_signet.X, pos_signet.Y, signet_scaled.GetRight(), signet_scaled.GetBottom());
+
+                    stat = graphics.DrawImage(
+                        signet_, dest,
+                        0, 0, signet_->GetWidth(), signet_->GetHeight(),
+                        Gdiplus::UnitPixel);
+                }
+
+                if (stat == Gdiplus::Ok)
+                {
+                    *phBmpImage = hMemBmp;
+                    hr = NOERROR;
+                }
+
+                SelectObject(memDC, hOldObj);
+                DeleteDC(memDC);
+            }
+
+            ReleaseDC(hwnd, hdc);
+            stream->Release();
+        }
+    }
+    catch(std::exception&)
+    {
+        OutputDebugStringFormatW( L"CThumbviewer Extract ERROR!\n" );
+        hr = E_FAIL;
+    }
+    return hr;
+}
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::GetLocation(
+    LPWSTR pszPathBuffer, DWORD cchMax, DWORD *pdwPriority, const SIZE *prgSize, DWORD dwRecClrDepth, DWORD *pdwFlags)
+{
+    if ((prgSize == nullptr) || (pdwFlags == nullptr) || ((*pdwFlags & IEIFLAG_ASYNC) && (pdwPriority == nullptr)))
+        return E_INVALIDARG;
+
+    thumbnail_size_ = *prgSize;
+    color_depth_ = dwRecClrDepth;
+
+    *pdwFlags = IEIFLAG_CACHE; // we don't cache the image
+
+    wcsncpy(pszPathBuffer, filename_.c_str(), cchMax);
+
+    return NOERROR;
+}
+
+// IPersist methods
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::GetClassID(CLSID* pClassID)
+{
+    *pClassID = CLSID_THUMBVIEWER_HANDLER;
+    return S_OK;
+}
+
+// IPersistFile methods
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::Load(LPCOLESTR pszFileName, DWORD)
+{
+    filename_ = pszFileName;
+    return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::IsDirty()
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::Save(LPCOLESTR, BOOL)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::SaveCompleted(LPCOLESTR)
+{ return E_NOTIMPL; }
+
+HRESULT STDMETHODCALLTYPE CThumbviewer::GetCurFile(LPOLESTR __RPC_FAR*)
+{ return E_NOTIMPL; }
+
+
+#endif // DONT_HAVE_GDIPLUS
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */