programs/wordpad/print.c

   1 /*
   2  * Wordpad implementation - Printing and print preview functions
   3  *
   4  * Copyright 2007-2008 by Alexander N. Sørnes <alex@thehandofagony.com>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <windows.h>
  22 #include <richedit.h>
  23 #include <commctrl.h>
  24
  25 #include "wordpad.h"
  26
  27 typedef struct _previewinfo
  28 {
  29     int page;
  30     int pages;
  31     HDC hdc;
  32     HDC hdcSized;
  33     RECT window;
  34     LPWSTR wszFileName;
  35 } previewinfo, *ppreviewinfo;
  36
  37 static HGLOBAL devMode;
  38 static HGLOBAL devNames;
  39
  40 static RECT margins;
  41 static previewinfo preview;
  42
  43 static const WCHAR var_pagemargin[] = {'P','a','g','e','M','a','r','g','i','n',0};
  44
  45 static LPWSTR get_print_file_filter(HWND hMainWnd)
  46 {
  47     static WCHAR wszPrintFilter[MAX_STRING_LEN*2+6+4+1];
  48     const WCHAR files_prn[] = {'*','.','P','R','N',0};
  49     const WCHAR files_all[] = {'*','.','*','\0'};
  50     LPWSTR p;
  51     HINSTANCE hInstance = (HINSTANCE)GetWindowLongPtr(hMainWnd, GWLP_HINSTANCE);
  52
  53     p = wszPrintFilter;
  54     LoadStringW(hInstance, STRING_PRINTER_FILES_PRN, p, MAX_STRING_LEN);
  55     p += lstrlenW(p) + 1;
  56     lstrcpyW(p, files_prn);
  57     p += lstrlenW(p) + 1;
  58     LoadStringW(hInstance, STRING_ALL_FILES, p, MAX_STRING_LEN);
  59     p += lstrlenW(p) + 1;
  60     lstrcpyW(p, files_all);
  61     p += lstrlenW(p) + 1;
  62     *p = 0;
  63
  64     return wszPrintFilter;
  65 }
  66
  67 void registry_set_pagemargins(HKEY hKey)
  68 {
  69     RegSetValueExW(hKey, var_pagemargin, 0, REG_BINARY, (LPBYTE)&margins, sizeof(RECT));
  70 }
  71
  72 void registry_read_pagemargins(HKEY hKey)
  73 {
  74     DWORD size = sizeof(RECT);
  75
  76     if(!hKey || RegQueryValueExW(hKey, var_pagemargin, 0, NULL, (LPBYTE)&margins,
  77                      &size) != ERROR_SUCCESS || size != sizeof(RECT))
  78     {
  79         margins.top = 1417;
  80         margins.bottom = 1417;
  81         margins.left = 1757;
  82         margins.right = 1757;
  83     }
  84 }
  85
  86 static void AddTextButton(HWND hRebarWnd, int string, int command, int id)
  87 {
  88     REBARBANDINFOW rb;
  89     HINSTANCE hInstance = (HINSTANCE)GetWindowLongPtr(hRebarWnd, GWLP_HINSTANCE);
  90     WCHAR text[MAX_STRING_LEN];
  91     HWND hButton;
  92
  93     LoadStringW(hInstance, string, text, MAX_STRING_LEN);
  94     hButton = CreateWindowW(WC_BUTTONW, text,
  95                             WS_VISIBLE | WS_CHILD, 5, 5, 100, 15,
  96                             hRebarWnd, (HMENU)command, hInstance, NULL);
  97
  98     rb.cbSize = sizeof(rb);
  99     rb.fMask = RBBIM_SIZE | RBBIM_CHILDSIZE | RBBIM_STYLE | RBBIM_CHILD | RBBIM_IDEALSIZE | RBBIM_ID;
 100     rb.fStyle = RBBS_NOGRIPPER | RBBS_VARIABLEHEIGHT;
 101     rb.hwndChild = hButton;
 102     rb.cyChild = rb.cyMinChild = 22;
 103     rb.cx = rb.cxMinChild = 90;
 104     rb.cxIdeal = 100;
 105     rb.wID = id;
 106
 107     SendMessageW(hRebarWnd, RB_INSERTBAND, -1, (LPARAM)&rb);
 108 }
 109
 110 static HDC make_dc(void)
 111 {
 112     if(devNames && devMode)
 113     {
 114         LPDEVNAMES dn = GlobalLock(devNames);
 115         LPDEVMODEW dm = GlobalLock(devMode);
 116         HDC ret;
 117
 118         ret = CreateDCW((LPWSTR)dn + dn->wDriverOffset,
 119                          (LPWSTR)dn + dn->wDeviceOffset, 0, dm);
 120
 121         GlobalUnlock(dn);
 122         GlobalUnlock(dm);
 123
 124         return ret;
 125     } else
 126     {
 127         return 0;
 128     }
 129 }
 130
 131 static LONG twips_to_centmm(int twips)
 132 {
 133     return MulDiv(twips, 1000, TWIPS_PER_CM);
 134 }
 135
 136 LONG centmm_to_twips(int mm)
 137 {
 138     return MulDiv(mm, TWIPS_PER_CM, 1000);
 139 }
 140
 141 static LONG twips_to_pixels(int twips, int dpi)
 142 {
 143     float ret = ((float)twips / ((float)TWIPS_PER_CM * 2.54)) * (float)dpi;
 144     return (LONG)ret;
 145 }
 146
 147 static LONG devunits_to_twips(int units, int dpi)
 148 {
 149     float ret = ((float)units / (float)dpi) * (float)TWIPS_PER_CM * 2.54;
 150     return (LONG)ret;
 151 }
 152
 153
 154 static RECT get_print_rect(HDC hdc)
 155 {
 156     RECT rc;
 157     int width, height;
 158
 159     if(hdc)
 160     {
 161         int dpiY = GetDeviceCaps(hdc, LOGPIXELSY);
 162         int dpiX = GetDeviceCaps(hdc, LOGPIXELSX);
 163         width = devunits_to_twips(GetDeviceCaps(hdc, PHYSICALWIDTH), dpiX);
 164         height = devunits_to_twips(GetDeviceCaps(hdc, PHYSICALHEIGHT), dpiY);
 165     } else
 166     {
 167         width = centmm_to_twips(18500);
 168         height = centmm_to_twips(27000);
 169     }
 170
 171     rc.left = margins.left;
 172     rc.right = width - margins.right;
 173     rc.top = margins.top;
 174     rc.bottom = height - margins.bottom;
 175
 176     return rc;
 177 }
 178
 179 void target_device(HWND hMainWnd, DWORD wordWrap)
 180 {
 181     HWND hEditorWnd = GetDlgItem(hMainWnd, IDC_EDITOR);
 182     HDC hdc = make_dc();
 183     int width = 0;
 184
 185     if(wordWrap == ID_WORDWRAP_MARGIN)
 186     {
 187         RECT rc = get_print_rect(hdc);
 188         width = rc.right - rc.left;
 189     }
 190
 191     if(!hdc)
 192     {
 193         HDC hMaindc = GetDC(hMainWnd);
 194         hdc = CreateCompatibleDC(hMaindc);
 195         ReleaseDC(hMainWnd, hMaindc);
 196     }
 197
 198     SendMessageW(hEditorWnd, EM_SETTARGETDEVICE, (WPARAM)hdc, width);
 199
 200     DeleteDC(hdc);
 201 }
 202
 203 static LPWSTR dialog_print_to_file(HWND hMainWnd)
 204 {
 205     OPENFILENAMEW ofn;
 206     static WCHAR file[MAX_PATH] = {'O','U','T','P','U','T','.','P','R','N',0};
 207     static const WCHAR defExt[] = {'P','R','N',0};
 208     static LPWSTR file_filter;
 209
 210     if(!file_filter)
 211         file_filter = get_print_file_filter(hMainWnd);
 212
 213     ZeroMemory(&ofn, sizeof(ofn));
 214
 215     ofn.lStructSize = sizeof(ofn);
 216     ofn.Flags = OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
 217     ofn.hwndOwner = hMainWnd;
 218     ofn.lpstrFilter = file_filter;
 219     ofn.lpstrFile = (LPWSTR)file;
 220     ofn.nMaxFile = MAX_PATH;
 221     ofn.lpstrDefExt = (LPWSTR)defExt;
 222
 223     if(GetSaveFileNameW(&ofn))
 224         return (LPWSTR)file;
 225     else
 226         return FALSE;
 227 }
 228
 229 static int get_num_pages(HWND hEditorWnd, FORMATRANGE fr)
 230 {
 231     int page = 0;
 232
 233     do
 234     {
 235         page++;
 236         fr.chrg.cpMin = SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE,
 237                                      (LPARAM)&fr);
 238     }
 239     while(fr.chrg.cpMin && fr.chrg.cpMin < fr.chrg.cpMax);
 240
 241     return page;
 242 }
 243
 244 static void char_from_pagenum(HWND hEditorWnd, FORMATRANGE *fr, int page)
 245 {
 246     int i;
 247
 248     for(i = 1; i <= page; i++)
 249     {
 250         if(i == page)
 251             break;
 252
 253         fr->chrg.cpMin = SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE, (LPARAM)fr);
 254     }
 255 }
 256
 257 static HWND get_ruler_wnd(HWND hMainWnd)
 258 {
 259     return GetDlgItem(GetDlgItem(hMainWnd, IDC_REBAR), IDC_RULER);
 260 }
 261
 262 void redraw_ruler(HWND hRulerWnd)
 263 {
 264     RECT rc;
 265
 266     GetClientRect(hRulerWnd, &rc);
 267     InvalidateRect(hRulerWnd, &rc, TRUE);
 268 }
 269
 270 static void update_ruler(HWND hRulerWnd)
 271 {
 272      SendMessageW(hRulerWnd, WM_USER, 0, 0);
 273      redraw_ruler(hRulerWnd);
 274 }
 275
 276 static void print(LPPRINTDLGW pd, LPWSTR wszFileName)
 277 {
 278     FORMATRANGE fr;
 279     DOCINFOW di;
 280     HWND hEditorWnd = GetDlgItem(pd->hwndOwner, IDC_EDITOR);
 281     int printedPages = 0;
 282
 283     fr.hdc = pd->hDC;
 284     fr.hdcTarget = pd->hDC;
 285
 286     fr.rc = get_print_rect(fr.hdc);
 287     fr.rcPage.left = 0;
 288     fr.rcPage.right = fr.rc.right + margins.right;
 289     fr.rcPage.top = 0;
 290     fr.rcPage.bottom = fr.rc.bottom + margins.bottom;
 291
 292     ZeroMemory(&di, sizeof(di));
 293     di.cbSize = sizeof(di);
 294     di.lpszDocName = wszFileName;
 295
 296     if(pd->Flags & PD_PRINTTOFILE)
 297     {
 298         di.lpszOutput = dialog_print_to_file(pd->hwndOwner);
 299         if(!di.lpszOutput)
 300             return;
 301     }
 302
 303     if(pd->Flags & PD_SELECTION)
 304     {
 305         SendMessageW(hEditorWnd, EM_EXGETSEL, 0, (LPARAM)&fr.chrg);
 306     } else
 307     {
 308         GETTEXTLENGTHEX gt;
 309         gt.flags = GTL_DEFAULT;
 310         gt.codepage = 1200;
 311         fr.chrg.cpMin = 0;
 312         fr.chrg.cpMax = SendMessageW(hEditorWnd, EM_GETTEXTLENGTHEX, (WPARAM)&gt, 0);
 313
 314         if(pd->Flags & PD_PAGENUMS)
 315             char_from_pagenum(hEditorWnd, &fr, pd->nToPage);
 316     }
 317
 318     StartDocW(fr.hdc, &di);
 319     do
 320     {
 321         if(StartPage(fr.hdc) <= 0)
 322             break;
 323
 324         fr.chrg.cpMin = SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE, (LPARAM)&fr);
 325
 326         if(EndPage(fr.hdc) <= 0)
 327             break;
 328
 329         printedPages++;
 330         if((pd->Flags & PD_PAGENUMS) && (printedPages > (pd->nToPage - pd->nFromPage)))
 331             break;
 332     }
 333     while(fr.chrg.cpMin && fr.chrg.cpMin < fr.chrg.cpMax);
 334
 335     EndDoc(fr.hdc);
 336     SendMessageW(hEditorWnd, EM_FORMATRANGE, FALSE, 0);
 337 }
 338
 339 void dialog_printsetup(HWND hMainWnd)
 340 {
 341     PAGESETUPDLGW ps;
 342
 343     ZeroMemory(&ps, sizeof(ps));
 344     ps.lStructSize = sizeof(ps);
 345     ps.hwndOwner = hMainWnd;
 346     ps.Flags = PSD_INHUNDREDTHSOFMILLIMETERS | PSD_MARGINS;
 347     ps.rtMargin.left = twips_to_centmm(margins.left);
 348     ps.rtMargin.right = twips_to_centmm(margins.right);
 349     ps.rtMargin.top = twips_to_centmm(margins.top);
 350     ps.rtMargin.bottom = twips_to_centmm(margins.bottom);
 351     ps.hDevMode = devMode;
 352     ps.hDevNames = devNames;
 353
 354     if(PageSetupDlgW(&ps))
 355     {
 356         margins.left = centmm_to_twips(ps.rtMargin.left);
 357         margins.right = centmm_to_twips(ps.rtMargin.right);
 358         margins.top = centmm_to_twips(ps.rtMargin.top);
 359         margins.bottom = centmm_to_twips(ps.rtMargin.bottom);
 360         devMode = ps.hDevMode;
 361         devNames = ps.hDevNames;
 362         update_ruler(get_ruler_wnd(hMainWnd));
 363     }
 364 }
 365
 366 void get_default_printer_opts(void)
 367 {
 368     PRINTDLGW pd;
 369     ZeroMemory(&pd, sizeof(pd));
 370
 371     ZeroMemory(&pd, sizeof(pd));
 372     pd.lStructSize = sizeof(pd);
 373     pd.Flags = PD_RETURNDC | PD_RETURNDEFAULT;
 374     pd.hDevMode = devMode;
 375
 376     PrintDlgW(&pd);
 377
 378     devMode = pd.hDevMode;
 379     devNames = pd.hDevNames;
 380 }
 381
 382 void print_quick(LPWSTR wszFileName)
 383 {
 384     PRINTDLGW pd;
 385
 386     ZeroMemory(&pd, sizeof(pd));
 387     pd.hDC = make_dc();
 388
 389     print(&pd, wszFileName);
 390 }
 391
 392 void dialog_print(HWND hMainWnd, LPWSTR wszFileName)
 393 {
 394     PRINTDLGW pd;
 395     HWND hEditorWnd = GetDlgItem(hMainWnd, IDC_EDITOR);
 396     int from = 0;
 397     int to = 0;
 398
 399     ZeroMemory(&pd, sizeof(pd));
 400     pd.lStructSize = sizeof(pd);
 401     pd.hwndOwner = hMainWnd;
 402     pd.Flags = PD_RETURNDC | PD_USEDEVMODECOPIESANDCOLLATE;
 403     pd.nMinPage = 1;
 404     pd.nMaxPage = -1;
 405     pd.hDevMode = devMode;
 406     pd.hDevNames = devNames;
 407
 408     SendMessageW(hEditorWnd, EM_GETSEL, (WPARAM)&from, (LPARAM)&to);
 409     if(from == to)
 410         pd.Flags |= PD_NOSELECTION;
 411
 412     if(PrintDlgW(&pd))
 413     {
 414         devMode = pd.hDevMode;
 415         devNames = pd.hDevNames;
 416         print(&pd, wszFileName);
 417         update_ruler(get_ruler_wnd(hMainWnd));
 418     }
 419 }
 420
 421 static void preview_bar_show(HWND hMainWnd, BOOL show)
 422 {
 423     HWND hReBar = GetDlgItem(hMainWnd, IDC_REBAR);
 424     int i;
 425
 426     if(show)
 427     {
 428         REBARBANDINFOW rb;
 429         HWND hStatic;
 430
 431         AddTextButton(hReBar, STRING_PREVIEW_PRINT, ID_PRINT, BANDID_PREVIEW_BTN1);
 432         AddTextButton(hReBar, STRING_PREVIEW_NEXTPAGE, ID_PREVIEW_NEXTPAGE, BANDID_PREVIEW_BTN2);
 433         AddTextButton(hReBar, STRING_PREVIEW_PREVPAGE, ID_PREVIEW_PREVPAGE, BANDID_PREVIEW_BTN3);
 434         AddTextButton(hReBar, STRING_PREVIEW_CLOSE, ID_FILE_EXIT, BANDID_PREVIEW_BTN4);
 435
 436         hStatic = CreateWindowW(WC_STATICW, NULL,
 437                                 WS_VISIBLE | WS_CHILD, 0, 0, 0, 0,
 438                                 hReBar, NULL, NULL, NULL);
 439
 440         rb.cbSize = sizeof(rb);
 441         rb.fMask = RBBIM_SIZE | RBBIM_CHILDSIZE | RBBIM_STYLE | RBBIM_CHILD | RBBIM_IDEALSIZE | RBBIM_ID;
 442         rb.fStyle = RBBS_NOGRIPPER | RBBS_VARIABLEHEIGHT;
 443         rb.hwndChild = hStatic;
 444         rb.cyChild = rb.cyMinChild = 22;
 445         rb.cx = rb.cxMinChild = 90;
 446         rb.cxIdeal = 100;
 447         rb.wID = BANDID_PREVIEW_BUFFER;
 448
 449         SendMessageW(hReBar, RB_INSERTBAND, -1, (LPARAM)&rb);
 450     } else
 451     {
 452         for(i = 0; i <= PREVIEW_BUTTONS; i++)
 453             SendMessageW(hReBar, RB_DELETEBAND, SendMessageW(hReBar, RB_IDTOINDEX, BANDID_PREVIEW_BTN1+i, 0), 0);
 454     }
 455 }
 456
 457 void init_preview(HWND hMainWnd, LPWSTR wszFileName)
 458 {
 459     preview.page = 1;
 460     preview.hdc = 0;
 461     preview.wszFileName = wszFileName;
 462     preview_bar_show(hMainWnd, TRUE);
 463 }
 464
 465 void close_preview(HWND hMainWnd)
 466 {
 467     preview.window.right = 0;
 468     preview.window.bottom = 0;
 469     preview.page = 0;
 470     preview.pages = 0;
 471
 472     preview_bar_show(hMainWnd, FALSE);
 473 }
 474
 475 BOOL preview_isactive(void)
 476 {
 477     return preview.page != 0;
 478 }
 479
 480 static void add_ruler_units(HDC hdcRuler, RECT* drawRect, BOOL NewMetrics, long EditLeftmost)
 481 {
 482     static HDC hdc;
 483
 484     if(NewMetrics)
 485     {
 486         static HBITMAP hBitmap;
 487         int i, x, y, RulerTextEnd;
 488         int CmPixels;
 489         int QuarterCmPixels;
 490         HFONT hFont;
 491         WCHAR FontName[] = {'M','S',' ','S','a','n','s',' ','S','e','r','i','f',0};
 492
 493         if(hdc)
 494         {
 495             DeleteDC(hdc);
 496             DeleteObject(hBitmap);
 497         }
 498
 499         hdc =  CreateCompatibleDC(hdc);
 500
 501         CmPixels = twips_to_pixels(TWIPS_PER_CM, GetDeviceCaps(hdc, LOGPIXELSX));
 502         QuarterCmPixels = (int)((float)CmPixels / 4.0);
 503
 504         hBitmap = CreateCompatibleBitmap(hdc, drawRect->right, drawRect->bottom);
 505         SelectObject(hdc, hBitmap);
 506         FillRect(hdc, drawRect, GetStockObject(WHITE_BRUSH));
 507
 508         hFont = CreateFontW(10, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, FontName);
 509
 510         SelectObject(hdc, hFont);
 511         SetBkMode(hdc, TRANSPARENT);
 512         SetTextAlign(hdc, TA_CENTER);
 513         y = (int)(((float)drawRect->bottom - (float)drawRect->top) / 2.0) + 1;
 514         RulerTextEnd = drawRect->right - EditLeftmost + 1;
 515         for(i = 1, x = EditLeftmost; x < (drawRect->right - EditLeftmost + 1); i ++)
 516         {
 517             WCHAR str[3];
 518             WCHAR format[] = {'%','d',0};
 519             int x2 = x;
 520
 521             x2 += QuarterCmPixels;
 522             if(x2 > RulerTextEnd)
 523                 break;
 524
 525             MoveToEx(hdc, x2, y, NULL);
 526             LineTo(hdc, x2, y+2);
 527
 528             x2 += QuarterCmPixels;
 529             if(x2 > RulerTextEnd)
 530                 break;
 531
 532             MoveToEx(hdc, x2, y - 3, NULL);
 533             LineTo(hdc, x2, y + 3);
 534
 535             x2 += QuarterCmPixels;
 536             if(x2 > RulerTextEnd)
 537                 break;
 538
 539             MoveToEx(hdc, x2, y, NULL);
 540             LineTo(hdc, x2, y+2);
 541
 542             x += CmPixels;
 543             if(x > RulerTextEnd)
 544                 break;
 545
 546             wsprintfW(str, format, i);
 547             TextOutW(hdc, x, 5, str, lstrlenW(str));
 548         }
 549         DeleteObject(hFont);
 550     }
 551
 552     BitBlt(hdcRuler, 0, 0, drawRect->right, drawRect->bottom, hdc, 0, 0, SRCAND);
 553 }
 554
 555 static void paint_ruler(HWND hWnd, long EditLeftmost, BOOL NewMetrics)
 556 {
 557     PAINTSTRUCT ps;
 558     HDC hdc = BeginPaint(hWnd, &ps);
 559     HDC hdcPrint = make_dc();
 560     RECT printRect = get_print_rect(hdcPrint);
 561     RECT drawRect;
 562     HBRUSH hBrush = CreateSolidBrush(GetSysColor(COLOR_MENU));
 563
 564     GetClientRect(hWnd, &drawRect);
 565     FillRect(hdc, &drawRect, hBrush);
 566
 567     drawRect.top += 3;
 568     drawRect.bottom -= 3;
 569     drawRect.left = EditLeftmost;
 570     drawRect.right = twips_to_pixels(printRect.right - margins.left, GetDeviceCaps(hdc, LOGPIXELSX));
 571     FillRect(hdc, &drawRect, GetStockObject(WHITE_BRUSH));
 572
 573     drawRect.top--;
 574     drawRect.bottom++;
 575     DrawEdge(hdc, &drawRect, EDGE_SUNKEN, BF_RECT);
 576
 577     drawRect.left = drawRect.right - 1;
 578     drawRect.right = twips_to_pixels(printRect.right + margins.right - margins.left, GetDeviceCaps(hdc, LOGPIXELSX));
 579     DrawEdge(hdc, &drawRect, EDGE_ETCHED, BF_RECT);
 580
 581     drawRect.left = 0;
 582     drawRect.top = 0;
 583     add_ruler_units(hdc, &drawRect, NewMetrics, EditLeftmost);
 584
 585     SelectObject(hdc, GetStockObject(BLACK_BRUSH));
 586     DeleteObject(hBrush);
 587     DeleteDC(hdcPrint);
 588     EndPaint(hWnd, &ps);
 589 }
 590
 591 LRESULT CALLBACK ruler_proc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 592 {
 593     static WNDPROC pPrevRulerProc;
 594     static long EditLeftmost;
 595     static BOOL NewMetrics;
 596
 597     switch(msg)
 598     {
 599         case WM_USER:
 600             if(wParam)
 601             {
 602                 EditLeftmost = ((POINTL*)wParam)->x;
 603                 pPrevRulerProc = (WNDPROC)lParam;
 604             }
 605             NewMetrics = TRUE;
 606             break;
 607
 608         case WM_PAINT:
 609             paint_ruler(hWnd, EditLeftmost, NewMetrics);
 610             break;
 611
 612         default:
 613             return CallWindowProcW(pPrevRulerProc, hWnd, msg, wParam, lParam);
 614     }
 615
 616     return 0;
 617 }
 618
 619 LRESULT print_preview(HWND hMainWnd)
 620 {
 621     FORMATRANGE fr;
 622     GETTEXTLENGTHEX gt;
 623     HDC hdc;
 624     RECT window, background;
 625     HBITMAP hBitmapCapture, hBitmapScaled;
 626     int bmWidth, bmHeight, bmNewWidth, bmNewHeight;
 627     float ratioWidth, ratioHeight, ratio;
 628     int xOffset, yOffset;
 629     int barheight;
 630     HWND hReBar = GetDlgItem(hMainWnd, IDC_REBAR);
 631     PAINTSTRUCT ps;
 632
 633     hdc = BeginPaint(hMainWnd, &ps);
 634     GetClientRect(hMainWnd, &window);
 635
 636     fr.hdcTarget = make_dc();
 637     fr.rc = get_print_rect(fr.hdcTarget);
 638     fr.rcPage.left = 0;
 639     fr.rcPage.top = 0;
 640     fr.rcPage.bottom = fr.rc.bottom + margins.bottom;
 641     fr.rcPage.right = fr.rc.right + margins.right;
 642
 643     bmWidth = twips_to_pixels(fr.rcPage.right, GetDeviceCaps(hdc, LOGPIXELSX));
 644     bmHeight = twips_to_pixels(fr.rcPage.bottom, GetDeviceCaps(hdc, LOGPIXELSY));
 645
 646     hBitmapCapture = CreateCompatibleBitmap(hdc, bmWidth, bmHeight);
 647
 648     if(!preview.hdc)
 649     {
 650         RECT paper;
 651         HWND hEditorWnd = GetDlgItem(hMainWnd, IDC_EDITOR);
 652
 653         preview.hdc = CreateCompatibleDC(hdc);
 654         fr.hdc = preview.hdc;
 655         gt.flags = GTL_DEFAULT;
 656         gt.codepage = 1200;
 657         fr.chrg.cpMin = 0;
 658         fr.chrg.cpMax = SendMessageW(hEditorWnd, EM_GETTEXTLENGTHEX, (WPARAM)&gt, 0);
 659
 660         paper.left = 0;
 661         paper.right = bmWidth;
 662         paper.top = 0;
 663         paper.bottom = bmHeight;
 664
 665         if(!preview.pages)
 666             preview.pages = get_num_pages(hEditorWnd, fr);
 667
 668         SelectObject(preview.hdc, hBitmapCapture);
 669
 670         char_from_pagenum(hEditorWnd, &fr, preview.page);
 671
 672         FillRect(preview.hdc, &paper, GetStockObject(WHITE_BRUSH));
 673         SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE, (LPARAM)&fr);
 674         SendMessageW(hEditorWnd, EM_FORMATRANGE, FALSE, 0);
 675
 676         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_PREVPAGE), preview.page > 1);
 677         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_NEXTPAGE), preview.page < preview.pages);
 678     }
 679
 680     barheight = SendMessageW(hReBar, RB_GETBARHEIGHT, 0, 0);
 681     ratioWidth = ((float)window.right - 20.0) / (float)bmHeight;
 682     ratioHeight = ((float)window.bottom - 20.0 - (float)barheight) / (float)bmHeight;
 683
 684     if(ratioWidth > ratioHeight)
 685         ratio = ratioHeight;
 686     else
 687         ratio = ratioWidth;
 688
 689     bmNewWidth = (int)((float)bmWidth * ratio);
 690     bmNewHeight = (int)((float)bmHeight * ratio);
 691     hBitmapScaled = CreateCompatibleBitmap(hdc, bmNewWidth, bmNewHeight);
 692
 693     xOffset = ((window.right - bmNewWidth) / 2);
 694     yOffset = ((window.bottom - bmNewHeight + barheight) / 2);
 695
 696     if(window.right != preview.window.right || window.bottom != preview.window.bottom)
 697     {
 698         HPEN hPen;
 699         int TopMargin = (int)((float)twips_to_pixels(fr.rc.top, GetDeviceCaps(hdc, LOGPIXELSX)) * ratio);
 700         int BottomMargin = (int)((float)twips_to_pixels(fr.rc.bottom, GetDeviceCaps(hdc, LOGPIXELSX)) * ratio);
 701         int LeftMargin = (int)((float)twips_to_pixels(fr.rc.left, GetDeviceCaps(hdc, LOGPIXELSY)) * ratio);
 702         int RightMargin = (int)((float)twips_to_pixels(fr.rc.right, GetDeviceCaps(hdc, LOGPIXELSY)) * ratio);
 703
 704         DeleteDC(preview.hdcSized);
 705         preview.hdcSized = CreateCompatibleDC(hdc);
 706         SelectObject(preview.hdcSized, hBitmapScaled);
 707
 708         StretchBlt(preview.hdcSized, 0, 0, bmNewWidth, bmNewHeight, preview.hdc, 0, 0, bmWidth, bmHeight, SRCCOPY);
 709
 710         /* Draw margin lines */
 711         hPen = CreatePen(PS_DOT, 1, RGB(0,0,0));
 712         SelectObject(preview.hdcSized, hPen);
 713
 714         MoveToEx(preview.hdcSized, 0, TopMargin, NULL);
 715         LineTo(preview.hdcSized, bmNewWidth, TopMargin);
 716         MoveToEx(preview.hdcSized, 0, BottomMargin, NULL);
 717         LineTo(preview.hdcSized, bmNewWidth, BottomMargin);
 718
 719         MoveToEx(preview.hdcSized, LeftMargin, 0, NULL);
 720         LineTo(preview.hdcSized, LeftMargin, bmNewHeight);
 721         MoveToEx(preview.hdcSized, RightMargin, 0, NULL);
 722         LineTo(preview.hdcSized, RightMargin, bmNewHeight);
 723     }
 724
 725     window.top = barheight;
 726     FillRect(hdc, &window, GetStockObject(GRAY_BRUSH));
 727
 728     SelectObject(hdc, hBitmapScaled);
 729
 730     background.left = xOffset - 2;
 731     background.right = xOffset + bmNewWidth + 2;
 732     background.top = yOffset - 2;
 733     background.bottom = yOffset + bmNewHeight + 2;
 734
 735     FillRect(hdc, &background, GetStockObject(BLACK_BRUSH));
 736
 737     BitBlt(hdc, xOffset, yOffset, bmNewWidth, bmNewHeight, preview.hdcSized, 0, 0, SRCCOPY);
 738
 739     DeleteDC(fr.hdcTarget);
 740     preview.window = window;
 741
 742     EndPaint(hMainWnd, &ps);
 743
 744     return 0;
 745 }
 746
 747 LRESULT preview_command(HWND hWnd, WPARAM wParam, LPARAM lParam)
 748 {
 749     switch(LOWORD(wParam))
 750     {
 751         case ID_FILE_EXIT:
 752             PostMessageW(hWnd, WM_CLOSE, 0, 0);
 753             break;
 754
 755         case ID_PREVIEW_NEXTPAGE:
 756         case ID_PREVIEW_PREVPAGE:
 757         {
 758             HWND hReBar = GetDlgItem(hWnd, IDC_REBAR);
 759             RECT rc;
 760
 761             if(LOWORD(wParam) == ID_PREVIEW_NEXTPAGE)
 762                 preview.page++;
 763             else
 764                 preview.page--;
 765
 766             preview.hdc = 0;
 767             preview.window.right = 0;
 768
 769             GetClientRect(hWnd, &rc);
 770             rc.top += SendMessageW(hReBar, RB_GETBARHEIGHT, 0, 0);
 771             InvalidateRect(hWnd, &rc, TRUE);
 772         }
 773         break;
 774
 775         case ID_PRINT:
 776             dialog_print(hWnd, preview.wszFileName);
 777             SendMessageW(hWnd, WM_CLOSE, 0, 0);
 778             break;
 779     }
 780
 781     return 0;
 782 }