sumatrapdf.cpp.svn-base

SumatraPDF是一款小型开源的pdf阅读工具。虽然玲珑小巧（只有800多KB）

/* Copyright Krzysztof Kowalczyk 2006-2007
   License: GPLv2 */
#include "SumatraPDF.h"

#include "file_util.h"
#include "geom_util.h"
#include "str_strsafe.h"
#include "str_util.h"
#include "strlist_util.h"
#include "translations.h"
#include "utf_util.h"
#include "win_util.h"
#include "tstr_util.h"

#include "SumatraDialogs.h"
#include "FileHistory.h"
#include "AppPrefs.h"

#include <assert.h>
#include <stdio.h>
#include <stdarg.h>
#include <ctype.h>
#include <direct.h> /* for _mkdir() */

#include <shellapi.h>
#include <shlobj.h>

#include "WinUtil.hpp"
#include <windowsx.h>
#include <Wininet.h>

#ifdef CRASHHANDLER
#include "client\windows\handler\exception_handler.h"
#endif

#ifndef CURR_VERSION
#define CURR_VERSION "0.9.3"
#endif

// #define SVN_PRE_RELEASE_VER 994

#define _QUOTEME(x) #x
#define QM(x) _QUOTEME(x)

#ifdef SVN_PRE_RELEASE_VER
#define UPDATE_CHECK_VER QM(SVN_PRE_RELEASE_VER)
#else
#define UPDATE_CHECK_VER CURR_VERSION
#endif

// this sucks but I don't know any other way
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='x86' publicKeyToken='6595b64144ccf1df' language='*'\"")

//#define FANCY_UI 1

/* Define if you want to conserve memory by always freeing cached bitmaps
   for pages not visible. Only enable for stress-testing the logic. On
   desktop machine we usually have plenty memory */
//#define CONSERVE_MEMORY 1

/* Next action for the benchmark mode */
#define MSG_BENCH_NEXT_ACTION WM_USER + 1

#define ZOOM_IN_FACTOR      1.2
#define ZOOM_OUT_FACTOR     1.0 / ZOOM_IN_FACTOR

/* if TRUE, we're in debug mode where we show links as blue rectangle on
   the screen. Makes debugging code related to links easier.
   TODO: make a menu item in DEBUG build to turn it on/off. */
#ifdef DEBUG
static BOOL             gDebugShowLinks = TRUE;
#else
static BOOL             gDebugShowLinks = FALSE;
#endif

/* default UI settings */

//#define DEFAULT_ZOOM            ZOOM_FIT_WIDTH
#define DEFAULT_ZOOM            ZOOM_FIT_PAGE
#define DEFAULT_ROTATION        0

//#define START_WITH_ABOUT        1

/* define if want to use double-buffering for rendering the PDF. Takes more memory!. */
#define DOUBLE_BUFFER 1

#define DRAGQUERY_NUMFILES 0xFFFFFFFF

#define MAX_LOADSTRING 100

#define WM_CREATE_FAILED -1
#define WM_CREATE_OK 0
#define WM_NCPAINT_HANDLED 0
#define WM_VSCROLL_HANDLED 0
#define WM_HSCROLL_HANDLED 0

#define ABOUT_WIN_DX 440
#define ABOUT_WIN_DY 328

#define WM_APP_REPAINT_DELAYED (WM_APP + 10)
#define WM_APP_REPAINT_NOW     (WM_APP + 11)
#define WM_APP_URL_DOWNLOADED  (WM_APP + 12)

/* A caption is 4 white/blue 2 pixel line and a 3 pixel white line */
#define CAPTION_DY 2*(2*4)+3

#define COL_CAPTION_BLUE RGB(0,0x50,0xa0)
#define COL_WHITE RGB(0xff,0xff,0xff)
#define COL_BLACK RGB(0,0,0)
#define COL_WINDOW_BG RGB(0xcc, 0xcc, 0xcc)
#define COL_WINDOW_SHADOW RGB(0x40, 0x40, 0x40)

#ifdef SVN_PRE_RELEASE_VER
#define ABOUT_BG_COLOR          RGB(255,0,0)
#else
#define ABOUT_BG_COLOR          RGB(255,242,0)
#endif

#define FRAME_CLASS_NAME        _T("SUMATRA_PDF_FRAME")
#define CANVAS_CLASS_NAME       _T("SUMATRA_PDF_CANVAS")
#define ABOUT_CLASS_NAME        _T("SUMATRA_PDF_ABOUT")
#define SPLITER_CLASS_NAME      _T("Spliter")
#define FINDSTATUS_CLASS_NAME   _T("FindStatus")
#define PDF_DOC_NAME            _T("Adobe PDF Document")
#define ABOUT_WIN_TITLE         _TR("About SumatraPDF")
#define PREFS_FILE_NAME         _T("sumatrapdfprefs.dat")
#define APP_SUB_DIR             _T("SumatraPDF")
#define APP_NAME_STR            "SumatraPDF"

#define DEFAULT_INVERSE_SEARCH_COMMANDLINE _T("C:\\Program Files\\WinEdt Team\\WinEdt\\winedt.exe \"[Open(|%f|);SelPar(%l,8)]\"")

/* Default size for the window, happens to be american A4 size (I think) */
#define DEF_PAGE_DX 612
#define DEF_PAGE_DY 792

#define SPLITTER_DX  5

#define REPAINT_TIMER_ID    1
#define REPAINT_DELAY_IN_MS 400

#define SMOOTHSCROLL_TIMER_ID       2
#define SMOOTHSCROLL_DELAY_IN_MS    20
#define SMOOTHSCROLL_SLOW_DOWN_FACTOR 10

#define FIND_STATUS_WIDTH       200 // Default width for the find status window
#define FIND_STATUS_MARGIN      8

/* A special "pointer" vlaue indicating that we tried to render this bitmap
   but couldn't (e.g. due to lack of memory) */
#define BITMAP_CANNOT_RENDER (RenderedBitmap*)NULL

#define WS_REBAR (WS_CHILD | WS_CLIPCHILDREN | WS_BORDER | RBS_VARHEIGHT | \
                  RBS_BANDBORDERS | CCS_NODIVIDER | CCS_NOPARENTALIGN)

#define MAX_RECENT_FILES_IN_MENU 15

static FileHistoryList *            gFileHistoryRoot = NULL;

static HINSTANCE                    ghinst = NULL;
TCHAR                               windowTitle[MAX_LOADSTRING];

static WindowInfo*                  gWindowList;

static HCURSOR                      gCursorArrow;
static HCURSOR                      gCursorHand;
static HCURSOR                      gCursorDrag;
static HCURSOR                      gCursorIBeam;
static HCURSOR                      gCursorScroll;
static HBRUSH                       gBrushBg;
static HBRUSH                       gBrushWhite;
static HBRUSH                       gBrushShadow;
static HBRUSH                       gBrushLinkDebug;

static HPEN                         ghpenWhite;
static HPEN                         ghpenBlue;

static HBITMAP                      gBitmapCloseToc;

//static AppVisualStyle               gVisualStyle = VS_WINDOWS;

static WCHAR *                      gBenchFileName;
static int                          gBenchPageNum = INVALID_PAGE_NO;

#ifdef DOUBLE_BUFFER
static bool                         gUseDoubleBuffer = true;
#else
static bool                         gUseDoubleBuffer = false;
#endif

#define MAX_PAGE_REQUESTS 8
static PageRenderRequest            gPageRenderRequests[MAX_PAGE_REQUESTS];
static int                          gPageRenderRequestsCount = 0;

static HANDLE                       gPageRenderThreadHandle;
static HANDLE                       gPageRenderSem;
static HANDLE                       gPageRenderClearQueue;
static HANDLE                       gPageRenderQueueCleared;
static PageRenderRequest *          gCurPageRenderReq;

static int                          gReBarDy;
static int                          gReBarDyFrame;
static int                          gToolbarSpacer = -1;
static HWND                         gHwndAbout;

static bool                         gRestrictedUse = false;

#ifdef BUILD_RM_VERSION
    static bool                         gDeleteFileOnClose = false; // Delete the file which was passed into the program by command line.
#endif

SerializableGlobalPrefs             gGlobalPrefs = {
    TRUE, // BOOL m_showToolbar
    FALSE, // BOOL m_pdfAssociateDontAskAgain
    TRUE, // BOOL m_pdfAssociateShouldAssociate
#ifdef BUILD_RM_VERSION
    FALSE, // BOOL m_enableAutoUpdate
#else
    TRUE,
#endif
    ABOUT_BG_COLOR, // int  m_bgColor
    FALSE, // BOOL m_escToExit
    NULL, // char *m_inverseSearchCmdLine
    NULL, // char *m_versionToSkip
    NULL, // char *m_lastUpdateTime
#ifdef BUILD_RM_VERSION
    DM_CONTINUOUS, // DisplayMode m_defaultDisplayMode
#else
    DM_SINGLE_PAGE,
#endif
    DEFAULT_ZOOM, // double m_defaultZoom
    WIN_STATE_NORMAL, // int  m_windowState
    DEFAULT_WIN_POS, // int  m_windowPosX
    DEFAULT_WIN_POS, // int  m_windowPosY
    DEFAULT_WIN_POS, // int  m_windowDx
    DEFAULT_WIN_POS, // int  m_windowDy
    DEFAULT_WIN_POS, // int  m_tmpWindowPosX
    DEFAULT_WIN_POS, // int  m_tmpWindowPosY
    DEFAULT_WIN_POS, // int  m_tmpWindowDx
    DEFAULT_WIN_POS, // int  m_tmpWindowDy
    0 // int  m_pdfsOpened
};

typedef struct ToolbarButtonInfo {
    /* information provided at compile time */
    int           bitmapResourceId;
    int           cmdId;
    const char *  toolTip;
    int           flags;

    /* information calculated at runtime */
    int           index;
} ToolbarButtonInfo;

enum ToolbarButtonFlag {
    TBF_RESTRICTED = 0x1 
};

#define IDB_SEPARATOR  -1
#define IDB_SEPARATOR2 -2

static ToolbarButtonInfo gToolbarButtons[] = {
    { IDB_SILK_OPEN,     IDM_OPEN,              _TRN("Open"),           TBF_RESTRICTED, 0 },
    { IDB_SEPARATOR,     IDB_SEPARATOR,         NULL,                   TBF_RESTRICTED, 0 },
    { IDB_SILK_PREV,     IDM_GOTO_PREV_PAGE,    _TRN("Previous Page"),  0,              0 },
    { IDB_SILK_NEXT,     IDM_GOTO_NEXT_PAGE,    _TRN("Next Page"),      0,              0 },
    { IDB_SEPARATOR,     IDB_SEPARATOR,         NULL,                   0,              0 },
    { IDB_SILK_ZOOM_OUT, IDT_VIEW_ZOOMOUT,      _TRN("Zoom Out"),       0,              0 },
    { IDB_SILK_ZOOM_IN,  IDT_VIEW_ZOOMIN,		_TRN("Zoom In"),        0,              0 },
    { IDB_SEPARATOR,     IDB_SEPARATOR,         NULL,                   0,              IDB_SEPARATOR },
    { IDB_FIND_PREV,     IDM_FIND_PREV,         _TRN("Find Previous"),  0,              0 },
    { IDB_FIND_NEXT,     IDM_FIND_NEXT,         _TRN("Find Next"),      0,              0 },
    { IDB_FIND_MATCH,    IDM_FIND_MATCH,        _TRN("Match case"),     0,              0 },
    { IDB_SEPARATOR,     IDB_SEPARATOR,         NULL,                   0,              IDB_SEPARATOR2 },
};

#define DEFAULT_LANGUAGE "en"

#define TOOLBAR_BUTTONS_COUNT dimof(gToolbarButtons)

static const char *g_currLangName;

static void CreateToolbar(WindowInfo *win, HINSTANCE hInst);
static void CreateTocBox(WindowInfo *win, HINSTANCE hInst);
static void RebuildProgramMenus(void);
static void UpdateToolbarFindText(WindowInfo *win);
static void UpdateToolbarPageText(WindowInfo *win);
static void UpdateToolbarToolText(void);
static void OnMenuFindMatchCase(WindowInfo *win);
static bool RefreshPdfDocument(const WCHAR *fileName, WindowInfo *win, 
    DisplayState *state, bool reuseExistingWindow, bool autorefresh, 
    bool showWin);
static void WindowInfo_ShowMessage_Asynch(WindowInfo *win, const wchar_t *message, bool resize);

void Find(HWND hwnd, WindowInfo *win, PdfSearchDirection direction = FIND_FORWARD);
void WindowInfo_EnterFullscreen(WindowInfo *win);

#define SEP_ITEM "-----"

/* according to http://wiki.snap.com/index.php/User_talk:Snap, Serbian (latin) should 
   be sp-rs and Serbian (Cyrillic) should be sr-rs */
#include "LangMenuDef.h"

// based on http://msdn2.microsoft.com/en-us/library/ms776260.aspx
static const char *g_lcidLangMap[] = {
    "en", "0409", NULL, // English
    "pl", "0415", NULL, // Polish
    "fr", "080c", "0c0c", "040c", "140c", "180c", "100c", NULL, // French
    "de", "0407", "0c07", "1407", "1007", "0807", NULL, // German
    "tr", "041f", NULL, // Turkish
    "by", "0423", NULL, // Belarusian
    "ja", "0411", NULL, // Japanese
    "hu", "040e", NULL, // Hungarian
    "fa", "0429", NULL, // Persian
    "dk", "0406", NULL, // Danish
    "it", "0410", NULL, // Italian
    "nl", "0813", "0413", NULL, // Dutch
    "ta", "0449", NULL, // Tamil
    "es", "0c0a", "040a", "500a", "280a", "3c0a", "180a", "080a", "2c0a", NULL, // Spanish
    "hr", "101a", "041a", NULL, // Croatian
    "ru", "0419", NULL, // Russian
    "ar", "1401", "3c01", "0c01", "0801", "2c01", "3401", "3001", "1001", "1801", "2001", "4001", "0401", "2801", "1c01", "3801", "2401", NULL, // Arabic
    "cn", NULL, // Chinese Simplified
    "sv", "081d", "041d", NULL, // Swedish
    "cz", "0405", NULL, // Czech
    "gr", "0408", NULL, // Greek
    "th", "041e", NULL, // Thai
    "pt", "0816", NULL, // Portuguese (Portugal)
    "br", "0416", NULL, // Portuguese (Brazillian)
    "no", "0414", "0814", NULL, // Norwegian
    "sk", "041b", NULL, // Slovak
    "vn", "042a", NULL, // Vietnamese
    "lt", NULL, NULL, // Lithuanian
    "my", NULL, NULL, // Malaysian
    "fi", NULL, NULL, // Finnish
    "ca", NULL, NULL, // Catalan
    "si", NULL, NULL, // Slovenian
    "tw", NULL, NULL, // Chinese Traditional
    "ml", NULL, NULL, // Malayalam
    "he", NULL, NULL, // Hebrew
    "sp-rs", NULL, NULL, // Serbian (Latin)
    "id", NULL, NULL, // Indonesian
    "mk", NULL, NULL, // Macedonian
    "ro", NULL, NULL, // Romanian
    "sr-rs", NULL, NULL, // Serbian (Cyrillic)
    "kr", NULL, NULL, // Korean
    "gl", NULL, NULL, // Galician
    "bg", NULL, NULL, // Bulgarian
    "uk", NULL, NULL, // Ukrainian
    NULL
};

const char* CurrLangNameGet() {
    if (!g_currLangName)
        return DEFAULT_LANGUAGE;
    return g_currLangName;
}

bool CurrLangNameSet(const char* langName) {
    bool validLang = false;
    for (int i=0; i < LANGS_COUNT; i++) {
        if (str_eq(langName, g_langs[i]._langName)) {
            validLang = true;
            break;
        }
    }
    if (!validLang) 
        return false;
    free((void*)g_currLangName);
    g_currLangName = str_dup(langName);

    bool ok = Translations_SetCurrentLanguage(langName);
    assert(ok);
    return true;
}

static void CurrLangNameFree() {
    free((void*)g_currLangName);
    g_currLangName = NULL;
}

static const char *GetLangFromLcid(const char *lcid)
{
    const char *lang;
    const char *langLcid;
    int i = 0;
    for (;;) {
        lang = g_lcidLangMap[i++];
        if (NULL == lang)
            return NULL;
        for (;;) {
            langLcid = g_lcidLangMap[i++];
            if (NULL == langLcid)
                break;
            if (str_eq(lcid, langLcid))
                return lang;
        }
    }
    assert(0);
    return NULL;
}

static void GuessLanguage()
{
    char langBuf[20];
    int res = GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_ILANGUAGE, langBuf, sizeof(langBuf));
    assert(0 != res);
    if (0 == res) return;
    const char *lang = GetLangFromLcid((const char*)&langBuf[0]);
    if (NULL != lang)
        CurrLangNameSet(lang);
}

/* Convert FILETIME to a string.
   Caller needs to free() the result. */
char *FileTimeToStr(FILETIME* ft)
{
    return mem_to_hexstr((unsigned char*)ft, sizeof(*ft));
}