C++ WindowInfo类代码示例

// Synchronization command format:
// [<DDECOMMAND_SYNC>(["<pdffile>",]"<srcfile>",<line>,<col>[,<newwindow>,<setfocus>])]
static const WCHAR *HandleSyncCmd(const WCHAR *cmd, DDEACK& ack)
{
    ScopedMem<WCHAR> pdfFile, srcFile;
    BOOL line = 0, col = 0, newWindow = 0, setFocus = 0;
    const WCHAR *next = str::Parse(cmd, L"[" DDECOMMAND_SYNC L"(\"%S\",%? \"%S\",%u,%u)]",
                                   &pdfFile, &srcFile, &line, &col);
    if (!next)
        next = str::Parse(cmd, L"[" DDECOMMAND_SYNC L"(\"%S\",%? \"%S\",%u,%u,%u,%u)]",
                          &pdfFile, &srcFile, &line, &col, &newWindow, &setFocus);
    // allow to omit the pdffile path, so that editors don't have to know about
    // multi-file projects (requires that the PDF has already been opened)
    if (!next) {
        pdfFile.Set(NULL);
        next = str::Parse(cmd, L"[" DDECOMMAND_SYNC L"(\"%S\",%u,%u)]",
                          &srcFile, &line, &col);
        if (!next)
            next = str::Parse(cmd, L"[" DDECOMMAND_SYNC L"(\"%S\",%u,%u,%u,%u)]",
                              &srcFile, &line, &col, &newWindow, &setFocus);
    }

    if (!next)
        return NULL;

    WindowInfo *win = NULL;
    if (pdfFile) {
        // check if the PDF is already opened
        win = FindWindowInfoByFile(pdfFile);
        // if not then open it
        if (newWindow || !win) {
            LoadArgs args(pdfFile, !newWindow ? win : NULL);
            win = LoadDocument(args);
        } else if (win && !win->IsDocLoaded()) {
            ReloadDocument(win);
        }
    }
    else {
        // check if any opened PDF has sync information for the source file
        win = FindWindowInfoBySyncFile(srcFile);
        if (newWindow) {
            LoadArgs args(win->loadedFilePath);
            win = LoadDocument(args);
        }
    }

    if (!win || !win->IsDocLoaded())
        return next;
    if (!win->pdfsync)
        return next;

    ack.fAck = 1;
    assert(win->IsDocLoaded());
    UINT page;
    Vec<RectI> rects;
    int ret = win->pdfsync->SourceToDoc(srcFile, line, col, &page, rects);
    ShowForwardSearchResult(win, srcFile, line, col, ret, page, rects);
    if (setFocus)
        win->Focus();

    return next;
}

static HTREEITEM AddTocItemToView(HWND hwnd, DocTocItem *entry, HTREEITEM parent, bool toggleItem)
{
    TV_INSERTSTRUCT tvinsert;
    tvinsert.hParent = parent;
    tvinsert.hInsertAfter = TVI_LAST;
    tvinsert.itemex.mask = TVIF_TEXT | TVIF_PARAM | TVIF_STATE;
    tvinsert.itemex.state = entry->child && entry->open != toggleItem ? TVIS_EXPANDED : 0;
    tvinsert.itemex.stateMask = TVIS_EXPANDED;
    tvinsert.itemex.lParam = (LPARAM)entry;
    // Replace unprintable whitespace with regular spaces
    str::NormalizeWS(entry->title);
    tvinsert.itemex.pszText = entry->title;

#ifdef DISPLAY_TOC_PAGE_NUMBERS
    WindowInfo *win = FindWindowInfoByHwnd(hwnd);
    if (entry->pageNo && win && win->IsDocLoaded() && !win->AsEbook()) {
        ScopedMem<WCHAR> label(win->ctrl->GetPageLabel(entry->pageNo));
        ScopedMem<WCHAR> text(str::Format(L"%s  %s", entry->title, label));
        tvinsert.itemex.pszText = text;
        return TreeView_InsertItem(hwnd, &tvinsert);
    }
#endif

    return TreeView_InsertItem(hwnd, &tvinsert);
}

void LinkHandler::LaunchFile(const WCHAR *path, PageDestination *link)
{
    // for safety, only handle relative paths and only open them in SumatraPDF
    // (unless they're of an allowed perceived type) and never launch any external
    // file in plugin mode (where documents are supposed to be self-contained)
    WCHAR drive;
    if (str::StartsWith(path, L"\\") || str::Parse(path, L"%c:\\", &drive) || gPluginMode) {
        return;
    }

    ScopedMem<WCHAR> fullPath(path::GetDir(owner->dm->FilePath()));
    fullPath.Set(path::Join(fullPath, path));
    fullPath.Set(path::Normalize(fullPath));
    // TODO: respect link->ld.gotor.new_window for PDF documents ?
    WindowInfo *newWin = FindWindowInfoByFile(fullPath);
    // TODO: don't show window until it's certain that there was no error
    if (!newWin) {
        LoadArgs args(fullPath, owner);
        newWin = LoadDocument(args);
        if (!newWin)
            return;
    }

    if (!newWin->IsDocLoaded()) {
        CloseWindow(newWin, true);
        // OpenFileExternally rejects files we'd otherwise
        // have to show a notification to be sure (which we
        // consider bad UI and thus simply don't)
        bool ok = OpenFileExternally(fullPath);
        if (!ok) {
            ScopedMem<WCHAR> msg(str::Format(_TR("Error loading %s"), fullPath));
            ShowNotification(owner, msg, true /* autoDismiss */, true /* highlight */);
        }
        return;
    }

    newWin->Focus();
    if (!link)
        return;

    ScopedMem<WCHAR> name(link->GetDestName());
    if (!name)
        newWin->linkHandler->ScrollTo(link);
    else {
        PageDestination *dest = newWin->dm->engine->GetNamedDest(name);
        if (dest) {
            newWin->linkHandler->ScrollTo(dest);
            delete dest;
        }
    }
}

Doc GetDocForWindow(SumatraWindow& win)
{
    if (win.AsWindowInfo()) {
        WindowInfo *iwin = win.AsWindowInfo();
        if (!iwin->IsDocLoaded())
            return Doc();
        return Doc(iwin->dm->engine, iwin->dm->engineType);
    }
    if (win.AsEbookWindow()) {
        EbookWindow *ewin = win.AsEbookWindow();
        return ewin->ebookController->GetDoc();
    }
    CrashIf(true);
    return Doc();
}

// note: used from CrashHandler.cpp, should not allocate memory
void GetStressTestInfo(str::Str<char>* s)
{
    // only add paths to files encountered during an explicit stress test
    // (for privacy reasons, users should be able to decide themselves
    // whether they want to share what files they had opened during a crash)
    if (!IsStressTesting())
        return;

    for (size_t i = 0; i < gWindows.Count(); i++) {
        WindowInfo *w = gWindows.At(i);
        if (!w || !w->IsDocLoaded() || !w->loadedFilePath)
            continue;

        s->Append("File: ");
        char buf[256];
        str::conv::ToCodePageBuf(buf, dimof(buf), w->loadedFilePath, CP_UTF8);
        s->Append(buf);
        w->stressTest->GetLogInfo(s);
        s->Append("\r\n");
    }
}

static WindowInfo *LoadOnStartup(const TCHAR *filePath, CommandLineInfo& i, bool isFirstWin)
{
    bool showWin = !(i.printDialog && i.exitOnPrint) && !gPluginMode;
    LoadArgs args(filePath, NULL, showWin);
    WindowInfo *win = LoadDocument(args);
    if (!win)
        return win;

    if (win->IsDocLoaded() && i.destName && isFirstWin) {
        win->linkHandler->GotoNamedDest(i.destName);
    } else if (win->IsDocLoaded() && i.pageNumber > 0 && isFirstWin) {
        if (win->dm->ValidPageNo(i.pageNumber))
            win->dm->GoToPage(i.pageNumber, 0);
    }
    if (i.hwndPluginParent)
        MakePluginWindow(*win, i.hwndPluginParent);
    if (!win->IsDocLoaded() || !isFirstWin)
        return win;

    if (i.enterPresentation || i.enterFullscreen)
        EnterFullscreen(*win, i.enterPresentation);
    if (i.startView != DM_AUTOMATIC)
        SwitchToDisplayMode(win, i.startView);
    if (i.startZoom != INVALID_ZOOM)
        ZoomToSelection(win, i.startZoom);
    if (i.startScroll.x != -1 || i.startScroll.y != -1) {
        ScrollState ss = win->dm->GetScrollState();
        ss.x = i.startScroll.x;
        ss.y = i.startScroll.y;
        win->dm->SetScrollState(ss);
    }
    if (i.forwardSearchOrigin && i.forwardSearchLine && win->pdfsync) {
        UINT page;
        Vec<RectI> rects;
            ScopedMem<TCHAR> sourcePath(path::Normalize(i.forwardSearchOrigin));
        int ret = win->pdfsync->SourceToDoc(sourcePath, i.forwardSearchLine, 0, &page, rects);
        ShowForwardSearchResult(win, sourcePath, i.forwardSearchLine, 0, ret, page, rects);
    }
    return win;
}

 virtual void Execute() {
     if (!WindowInfoStillValid(win))
         return;
     SetForegroundWindow(win->hwndFrame);
     if (win->IsDocLoaded()) {
         if (-1 != pageNo)
             win->dm->GoToPage(pageNo, 0, true);
         // we might have been invoked by clicking on a tree view
         // switch focus so that keyboard navigation works, which enables
         // a fluid experience
         SetFocus(win->hwndFrame);
     }
 }

// Set view mode and zoom level. Format:
// [<DDECOMMAND_SETVIEW>("<pdffilepath>", "<view mode>", <zoom level>[, <scrollX>, <scrollY>])]
static const WCHAR *HandleSetViewCmd(const WCHAR *cmd, DDEACK& ack)
{
    ScopedMem<WCHAR> pdfFile, viewMode;
    float zoom = INVALID_ZOOM;
    PointI scroll(-1, -1);
    const WCHAR *next = str::Parse(cmd, L"[" DDECOMMAND_SETVIEW L"(\"%S\",%? \"%S\",%f)]",
                                   &pdfFile, &viewMode, &zoom);
    if (!next)
        next = str::Parse(cmd, L"[" DDECOMMAND_SETVIEW L"(\"%S\",%? \"%S\",%f,%d,%d)]",
                          &pdfFile, &viewMode, &zoom, &scroll.x, &scroll.y);
    if (!next)
        return NULL;

    WindowInfo *win = FindWindowInfoByFile(pdfFile);
    if (!win)
        return next;
    if (!win->IsDocLoaded()) {
        ReloadDocument(win);
        if (!win->IsDocLoaded())
            return next;
    }

    DisplayMode mode = DisplayModeConv::EnumFromName(viewMode, DM_AUTOMATIC);
    if (mode != DM_AUTOMATIC)
        SwitchToDisplayMode(win, mode);

    if (zoom != INVALID_ZOOM)
        ZoomToSelection(win, zoom);

    if (scroll.x != -1 || scroll.y != -1) {
        ScrollState ss = win->dm->GetScrollState();
        ss.x = scroll.x;
        ss.y = scroll.y;
        win->dm->SetScrollState(ss);
    }

    ack.fAck = 1;
    return next;
}

static void ShowSearchResult(WindowInfo& win, TextSel *result, bool addNavPt)
{
    CrashIf(0 == result->len || !result->pages || !result->rects);
    if (0 == result->len || !result->pages || !result->rects)
        return;

    if (addNavPt || !win.dm->PageShown(result->pages[0]) ||
        (win.dm->ZoomVirtual() == ZOOM_FIT_PAGE || win.dm->ZoomVirtual() == ZOOM_FIT_CONTENT))
    {
        win.dm->GoToPage(result->pages[0], 0, addNavPt);
    }

    win.dm->textSelection->CopySelection(win.dm->textSearch);
    UpdateTextSelection(&win, false);
    win.dm->ShowResultRectToScreen(result);
    win.RepaintAsync();
}

 virtual void Execute() {
     if (!WindowInfoStillValid(win))
         return;
     if (win->findThread != thread) {
         // Race condition: FindTextOnThread/AbortFinding was
         // called after the previous find thread ended but
         // before this FindEndTask could be executed
         return;
     }
     if (!win->IsDocLoaded()) {
         // the UI has already been disabled and hidden
     } else if (textSel) {
         ShowSearchResult(*win, textSel, wasModifiedCanceled);
         ftd->HideUI(true, loopedAround);
     } else {
         // nothing found or search canceled
         ClearSearchResult(win);
         ftd->HideUI(false, !wasModifiedCanceled);
     }
     win->findThread = NULL;
 }

WindowElement::WindowElement(WindowInfo info, QObject *parent) :
    QObject(parent),
    m_title(info.title()),
    m_windowId(info.window())
{
    SystemIconProvider provider;

    if (info.icon())
        m_pixmap = QPixmap::fromX11Pixmap(info.icon());
    else if (!info.iconName().isEmpty())
    {
        m_pixmap = provider.requestPixmap(info.iconName(), NULL, QSize());
    }
    else
    {
        // App icon wasn't set, and iconName wasn't set... fallback to default
        m_pixmap = provider.requestPixmap("default", NULL, QSize());
    }

    if (!info.notificationIconName().isEmpty())
    {
        m_notify = provider.requestPixmap(info.notificationIconName(), NULL, QSize());
    }
}

void LinkHandler::GotoLink(PageDestination *link)
{
    CrashIf(!owner || owner->linkHandler != this);
    if (!link || !owner->IsDocLoaded())
        return;

    ScopedMem<WCHAR> path(link->GetDestValue());
    PageDestType type = link->GetDestType();
    if (Dest_ScrollTo == type) {
        // TODO: respect link->ld.gotor.new_window for PDF documents ?
        ScrollTo(link);
    }
    else if (Dest_LaunchURL == type) {
        if (!path)
            /* ignore missing URLs */;
        else {
            WCHAR *colon = str::FindChar(path, ':');
            WCHAR *hash = str::FindChar(path, '#');
            if (!colon || (hash && colon > hash)) {
                // treat relative URIs as file paths (without fragment identifier)
                if (hash)
                    *hash = '\0';
                // LaunchFile will reject unsupported file types
                LaunchFile(path, NULL);
            }
            else {
                // LaunchBrowser will reject unsupported URI schemes
                LaunchBrowser(path);
            }
        }
    }
    else if (Dest_LaunchEmbedded == type) {
        // open embedded PDF documents in a new window
        if (path && str::StartsWith(path.Get(), owner->ctrl->FilePath())) {
            WindowInfo *newWin = FindWindowInfoByFile(path, true);
            if (!newWin) {
                LoadArgs args(path, owner);
                newWin = LoadDocument(args);
            }
            if (newWin)
                newWin->Focus();
        }
        // offer to save other attachments to a file
        else {
            LinkSaver linkSaverTmp(*owner, path);
            link->SaveEmbedded(linkSaverTmp);
        }
    }
    else if (Dest_LaunchFile == type) {
        if (path) {
            // LaunchFile only opens files inside SumatraPDF
            // (except for allowed perceived file types)
            LaunchFile(path, link);
        }
    }
    // predefined named actions
    else if (Dest_NextPage == type)
        owner->ctrl->GoToNextPage();
    else if (Dest_PrevPage == type)
        owner->ctrl->GoToPrevPage();
    else if (Dest_FirstPage == type)
        owner->ctrl->GoToFirstPage();
    else if (Dest_LastPage == type)
        owner->ctrl->GoToLastPage();
    // Adobe Reader extensions to the spec, cf. http://www.tug.org/applications/hyperref/manual.html
    else if (Dest_FindDialog == type)
        PostMessage(owner->hwndFrame, WM_COMMAND, IDM_FIND_FIRST, 0);
    else if (Dest_FullScreen == type)
        PostMessage(owner->hwndFrame, WM_COMMAND, IDM_VIEW_PRESENTATION_MODE, 0);
    else if (Dest_GoBack == type)
        owner->ctrl->Navigate(-1);
    else if (Dest_GoForward == type)
        owner->ctrl->Navigate(1);
    else if (Dest_GoToPageDialog == type)
        PostMessage(owner->hwndFrame, WM_COMMAND, IDM_GOTO_PAGE, 0);
    else if (Dest_PrintDialog == type)
        PostMessage(owner->hwndFrame, WM_COMMAND, IDM_PRINT, 0);
    else if (Dest_SaveAsDialog == type)
        PostMessage(owner->hwndFrame, WM_COMMAND, IDM_SAVEAS, 0);
    else if (Dest_ZoomToDialog == type)
        PostMessage(owner->hwndFrame, WM_COMMAND, IDM_ZOOM_CUSTOM, 0);
    else
        CrashIf(Dest_None != type);
}

bool StressTest::OpenFile(const TCHAR *fileName)
{
    bool reuse = rand() % 3 != 1;
    _tprintf(_T("%s\n"), fileName);
    fflush(stdout);
    LoadArgs args(fileName, NULL, true /* show */, reuse);
    WindowInfo *w = LoadDocument(args);
    if (!w)
        return false;

    if (w == win) { // WindowInfo reused
        if (!win->dm)
            return false;
    } else if (!w->dm) { // new WindowInfo
        CloseWindow(w, false, true);
        return false;
    }

    // transfer ownership of stressTest object to a new window and close the
    // current one
    assert(this == win->stressTest);
    if (w != win) {
        if (win->IsDocLoaded()) {
            // try to provoke a crash in RenderCache cleanup code
            ClientRect rect(win->hwndFrame);
            rect.Inflate(rand() % 10, rand() % 10);
            SendMessage(win->hwndFrame, WM_SIZE, 0, MAKELONG(rect.dx, rect.dy));
            win->RenderPage(1);
            win->RepaintAsync();
        }

        WindowInfo *toClose = win;
        w->stressTest = win->stressTest;
        win->stressTest = NULL;
        win = w;
        CloseWindow(toClose, false, false);
    }
    if (!win->dm)
        return false;

    win->dm->ChangeDisplayMode(DM_CONTINUOUS);
    win->dm->ZoomTo(ZOOM_FIT_PAGE);
    win->dm->GoToFirstPage();
    if (win->tocVisible || gGlobalPrefs.favVisible)
        SetSidebarVisibility(win, win->tocVisible, gGlobalPrefs.favVisible);

    currPage = pageRanges.At(0).start;
    win->dm->GoToPage(currPage, 0);
    currPageRenderTime.Start();
    ++filesCount;

    pageForSearchStart = (rand() % win->dm->PageCount()) + 1;
    // search immediately in single page documents
    if (1 == pageForSearchStart) {
        // use text that is unlikely to be found, so that we search all pages
        win::SetText(win->hwndFindBox, _T("!z_yt"));
        FindTextOnThread(win);
    }

    int secs = SecsSinceSystemTime(stressStartTime);
    ScopedMem<TCHAR> tm(FormatTime(secs));
    ScopedMem<TCHAR> s(str::Format(_T("File %d: %s, time: %s"), filesCount, fileName, tm));
    ShowNotification(win, s, false, false, NG_STRESS_TEST_SUMMARY);

    return true;
}

bool StressTest::OpenFile(const WCHAR* fileName) {
    wprintf(L"%s\n", fileName);
    fflush(stdout);

    LoadArgs args(fileName);
    args.forceReuse = rand() % 3 != 1;
    WindowInfo* w = LoadDocument(args);
    if (!w)
        return false;

    if (w == win) { // WindowInfo reused
        if (!win->IsDocLoaded())
            return false;
    } else if (!w->IsDocLoaded()) { // new WindowInfo
        CloseWindow(w, false);
        return false;
    }

    // transfer ownership of stressTest object to a new window and close the
    // current one
    AssertCrash(this == win->stressTest);
    if (w != win) {
        if (win->IsDocLoaded()) {
            // try to provoke a crash in RenderCache cleanup code
            ClientRect rect(win->hwndFrame);
            rect.Inflate(rand() % 10, rand() % 10);
            SendMessage(win->hwndFrame, WM_SIZE, 0, MAKELONG(rect.dx, rect.dy));
            if (win->AsFixed())
                win->cbHandler->RequestRendering(1);
            win->RepaintAsync();
        }

        WindowInfo* toClose = win;
        w->stressTest = win->stressTest;
        win->stressTest = nullptr;
        win = w;
        CloseWindow(toClose, false);
    }
    if (!win->IsDocLoaded())
        return false;

    win->ctrl->SetDisplayMode(DM_CONTINUOUS);
    win->ctrl->SetZoomVirtual(ZOOM_FIT_PAGE, nullptr);
    win->ctrl->GoToFirstPage();
    if (win->tocVisible || gGlobalPrefs->showFavorites)
        SetSidebarVisibility(win, win->tocVisible, gGlobalPrefs->showFavorites);

    currPage = pageRanges.at(0).start;
    win->ctrl->GoToPage(currPage, false);
    currPageRenderTime.Start();
    ++filesCount;

    pageForSearchStart = (rand() % win->ctrl->PageCount()) + 1;
    // search immediately in single page documents
    if (1 == pageForSearchStart) {
        // use text that is unlikely to be found, so that we search all pages
        win::SetText(win->hwndFindBox, L"!z_yt");
        FindTextOnThread(win, TextSearchDirection::Forward, true);
    }

    int secs = SecsSinceSystemTime(stressStartTime);
    AutoFreeW tm(FormatTime(secs));
    AutoFreeW s(str::Format(L"File %d: %s, time: %s", filesCount, fileName, tm));
    win->ShowNotification(s, NOS_PERSIST, NG_STRESS_TEST_SUMMARY);

    return true;
}

static int process_event(XEvent* event) {
    KeySym sym;

    WindowInfo* info = find_handle(event->xany.window);

    if (!info)
        return 1;

    if (event->type == ClientMessage) {
        if ((Atom)event->xclient.data.l[0] == s_wm_delete_window) {
            info->update = 0;
            mfb_close(info);

            return 0;
        }
    }

    switch (event->type) 
    {
        case KeyPress:
        {
            sym = XLookupKeysym(&event->xkey, 0);

			if (handle_special_keys(info, event, 1))
				break;

            if (info->key_callback)
                info->key_callback(info->rust_data, sym, 1);

            if (info->char_callback) {
				unsigned int t = keySym2Unicode(sym);
				if (t != -1)
					info->char_callback(info->rust_data, t);
            }

            break;
        }

        case KeyRelease:
        {
			if (handle_special_keys(info, event, 0))
				break;

            sym = XLookupKeysym(&event->xkey, 0);

            if (info->key_callback)
                info->key_callback(info->rust_data, sym, 0);
            break;
        }

        case ButtonPress:
        {
            if (!info->shared_data)
                break;

            if (event->xbutton.button == Button1)
                info->shared_data->state[0] = 1;
            else if (event->xbutton.button == Button2)
                info->shared_data->state[1] = 1;
            else if (event->xbutton.button == Button3)
                info->shared_data->state[2] = 1;
            else if (event->xbutton.button == Button4)
                info->shared_data->scroll_y = 10.0f;
            else if (event->xbutton.button == Button5)
                info->shared_data->scroll_y = -10.0f;
            else if (event->xbutton.button == Button6)
                info->shared_data->scroll_x = 10.0f;
            else if (event->xbutton.button == Button7)
                info->shared_data->scroll_y = -10.0f;

            break;
        }

        case ButtonRelease:
        {
            if (!info->shared_data)
                break;

            if (event->xbutton.button == Button1) 
                info->shared_data->state[0] = 0;
            else if (event->xbutton.button == Button2)
                info->shared_data->state[1] = 0;
            else if (event->xbutton.button == Button3)
                info->shared_data->state[2] = 0;

            break;
        }

        case ConfigureNotify:
        {
            info->width = event->xconfigure.width;
            info->height = event->xconfigure.height;
            break;
        }
    }

    return 1;
}