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 hdc2;
  33     HDC hdcSized;
  34     HDC hdcSized2;
  35     RECT window;
  36     LPWSTR wszFileName;
  37 } previewinfo, *ppreviewinfo;
  38
  39 static HGLOBAL devMode;
  40 static HGLOBAL devNames;
  41
  42 static RECT margins;
  43 static previewinfo preview;
  44
  45 static const WCHAR var_pagemargin[] = {'P','a','g','e','M','a','r','g','i','n',0};
  46
  47 static LPWSTR get_print_file_filter(HWND hMainWnd)
  48 {
  49     static WCHAR wszPrintFilter[MAX_STRING_LEN*2+6+4+1];
  50     const WCHAR files_prn[] = {'*','.','P','R','N',0};
  51     const WCHAR files_all[] = {'*','.','*','\0'};
  52     LPWSTR p;
  53     HINSTANCE hInstance = (HINSTANCE)GetWindowLongPtr(hMainWnd, GWLP_HINSTANCE);
  54
  55     p = wszPrintFilter;
  56     LoadStringW(hInstance, STRING_PRINTER_FILES_PRN, p, MAX_STRING_LEN);
  57     p += lstrlenW(p) + 1;
  58     lstrcpyW(p, files_prn);
  59     p += lstrlenW(p) + 1;
  60     LoadStringW(hInstance, STRING_ALL_FILES, p, MAX_STRING_LEN);
  61     p += lstrlenW(p) + 1;
  62     lstrcpyW(p, files_all);
  63     p += lstrlenW(p) + 1;
  64     *p = 0;
  65
  66     return wszPrintFilter;
  67 }
  68
  69 void registry_set_pagemargins(HKEY hKey)
  70 {
  71     RegSetValueExW(hKey, var_pagemargin, 0, REG_BINARY, (LPBYTE)&margins, sizeof(RECT));
  72 }
  73
  74 void registry_read_pagemargins(HKEY hKey)
  75 {
  76     DWORD size = sizeof(RECT);
  77
  78     if(!hKey || RegQueryValueExW(hKey, var_pagemargin, 0, NULL, (LPBYTE)&margins,
  79                      &size) != ERROR_SUCCESS || size != sizeof(RECT))
  80     {
  81         margins.top = 1417;
  82         margins.bottom = 1417;
  83         margins.left = 1757;
  84         margins.right = 1757;
  85     }
  86 }
  87
  88 static void AddTextButton(HWND hRebarWnd, UINT string, UINT command, UINT id)
  89 {
  90     REBARBANDINFOW rb;
  91     HINSTANCE hInstance = (HINSTANCE)GetWindowLongPtr(hRebarWnd, GWLP_HINSTANCE);
  92     WCHAR text[MAX_STRING_LEN];
  93     HWND hButton;
  94
  95     LoadStringW(hInstance, string, text, MAX_STRING_LEN);
  96     hButton = CreateWindowW(WC_BUTTONW, text,
  97                             WS_VISIBLE | WS_CHILD, 5, 5, 100, 15,
  98                             hRebarWnd, (HMENU)ULongToHandle(command), hInstance, NULL);
  99
 100     rb.cbSize = sizeof(rb);
 101     rb.fMask = RBBIM_SIZE | RBBIM_CHILDSIZE | RBBIM_STYLE | RBBIM_CHILD | RBBIM_IDEALSIZE | RBBIM_ID;
 102     rb.fStyle = RBBS_NOGRIPPER | RBBS_VARIABLEHEIGHT;
 103     rb.hwndChild = hButton;
 104     rb.cyChild = rb.cyMinChild = 22;
 105     rb.cx = rb.cxMinChild = 90;
 106     rb.cxIdeal = 100;
 107     rb.wID = id;
 108
 109     SendMessageW(hRebarWnd, RB_INSERTBAND, -1, (LPARAM)&rb);
 110 }
 111
 112 static HDC make_dc(void)
 113 {
 114     if(devNames && devMode)
 115     {
 116         LPDEVNAMES dn = GlobalLock(devNames);
 117         LPDEVMODEW dm = GlobalLock(devMode);
 118         HDC ret;
 119
 120         ret = CreateDCW((LPWSTR)dn + dn->wDriverOffset,
 121                          (LPWSTR)dn + dn->wDeviceOffset, 0, dm);
 122
 123         GlobalUnlock(dn);
 124         GlobalUnlock(dm);
 125
 126         return ret;
 127     } else
 128     {
 129         return 0;
 130     }
 131 }
 132
 133 static LONG twips_to_centmm(int twips)
 134 {
 135     return MulDiv(twips, CENTMM_PER_INCH, TWIPS_PER_INCH);
 136 }
 137
 138 static LONG centmm_to_twips(int mm)
 139 {
 140     return MulDiv(mm, TWIPS_PER_INCH, CENTMM_PER_INCH);
 141 }
 142
 143 static LONG twips_to_pixels(int twips, int dpi)
 144 {
 145     return MulDiv(twips, dpi, TWIPS_PER_INCH);
 146 }
 147
 148 static LONG devunits_to_twips(int units, int dpi)
 149 {
 150     return MulDiv(units, TWIPS_PER_INCH, dpi);
 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     fr.chrg.cpMin = 0;
 233
 234     do
 235     {
 236         page++;
 237         fr.chrg.cpMin = SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE,
 238                                      (LPARAM)&fr);
 239     }
 240     while(fr.chrg.cpMin && fr.chrg.cpMin < fr.chrg.cpMax);
 241
 242     return page;
 243 }
 244
 245 static void char_from_pagenum(HWND hEditorWnd, FORMATRANGE *fr, int page)
 246 {
 247     int i;
 248
 249     fr->chrg.cpMin = 0;
 250
 251     for(i = 1; i < page; i++)
 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_TWOPAGES, ID_PREVIEW_NUMPAGES, BANDID_PREVIEW_BTN4);
 435         AddTextButton(hReBar, STRING_PREVIEW_CLOSE, ID_FILE_EXIT, BANDID_PREVIEW_BTN5);
 436
 437         hStatic = CreateWindowW(WC_STATICW, NULL,
 438                                 WS_VISIBLE | WS_CHILD, 0, 0, 0, 0,
 439                                 hReBar, NULL, NULL, NULL);
 440
 441         rb.cbSize = sizeof(rb);
 442         rb.fMask = RBBIM_SIZE | RBBIM_CHILDSIZE | RBBIM_STYLE | RBBIM_CHILD | RBBIM_IDEALSIZE | RBBIM_ID;
 443         rb.fStyle = RBBS_NOGRIPPER | RBBS_VARIABLEHEIGHT;
 444         rb.hwndChild = hStatic;
 445         rb.cyChild = rb.cyMinChild = 22;
 446         rb.cx = rb.cxMinChild = 90;
 447         rb.cxIdeal = 100;
 448         rb.wID = BANDID_PREVIEW_BUFFER;
 449
 450         SendMessageW(hReBar, RB_INSERTBAND, -1, (LPARAM)&rb);
 451     } else
 452     {
 453         for(i = 0; i <= PREVIEW_BUTTONS; i++)
 454             SendMessageW(hReBar, RB_DELETEBAND, SendMessageW(hReBar, RB_IDTOINDEX, BANDID_PREVIEW_BTN1+i, 0), 0);
 455     }
 456 }
 457
 458 void init_preview(HWND hMainWnd, LPWSTR wszFileName)
 459 {
 460     preview.page = 1;
 461     preview.hdc = 0;
 462     preview.hdc2 = 0;
 463     preview.wszFileName = wszFileName;
 464     preview_bar_show(hMainWnd, TRUE);
 465 }
 466
 467 void close_preview(HWND hMainWnd)
 468 {
 469     preview.window.right = 0;
 470     preview.window.bottom = 0;
 471     preview.page = 0;
 472     preview.pages = 0;
 473
 474     preview_bar_show(hMainWnd, FALSE);
 475 }
 476
 477 BOOL preview_isactive(void)
 478 {
 479     return preview.page != 0;
 480 }
 481
 482 static void add_ruler_units(HDC hdcRuler, RECT* drawRect, BOOL NewMetrics, long EditLeftmost)
 483 {
 484     static HDC hdc;
 485
 486     if(NewMetrics)
 487     {
 488         static HBITMAP hBitmap;
 489         int i, x, y, RulerTextEnd;
 490         int CmPixels;
 491         int QuarterCmPixels;
 492         HFONT hFont;
 493         WCHAR FontName[] = {'M','S',' ','S','a','n','s',' ','S','e','r','i','f',0};
 494
 495         if(hdc)
 496         {
 497             DeleteDC(hdc);
 498             DeleteObject(hBitmap);
 499         }
 500
 501         hdc = CreateCompatibleDC(0);
 502
 503         CmPixels = twips_to_pixels(centmm_to_twips(1000), GetDeviceCaps(hdc, LOGPIXELSX));
 504         QuarterCmPixels = (int)((float)CmPixels / 4.0);
 505
 506         hBitmap = CreateCompatibleBitmap(hdc, drawRect->right, drawRect->bottom);
 507         SelectObject(hdc, hBitmap);
 508         FillRect(hdc, drawRect, GetStockObject(WHITE_BRUSH));
 509
 510         hFont = CreateFontW(10, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, FontName);
 511
 512         SelectObject(hdc, hFont);
 513         SetBkMode(hdc, TRANSPARENT);
 514         SetTextAlign(hdc, TA_CENTER);
 515         y = (int)(((float)drawRect->bottom - (float)drawRect->top) / 2.0) + 1;
 516         RulerTextEnd = drawRect->right - EditLeftmost + 1;
 517         for(i = 1, x = EditLeftmost; x < (drawRect->right - EditLeftmost + 1); i ++)
 518         {
 519             WCHAR str[3];
 520             WCHAR format[] = {'%','d',0};
 521             int x2 = x;
 522
 523             x2 += QuarterCmPixels;
 524             if(x2 > RulerTextEnd)
 525                 break;
 526
 527             MoveToEx(hdc, x2, y, NULL);
 528             LineTo(hdc, x2, y+2);
 529
 530             x2 += QuarterCmPixels;
 531             if(x2 > RulerTextEnd)
 532                 break;
 533
 534             MoveToEx(hdc, x2, y - 3, NULL);
 535             LineTo(hdc, x2, y + 3);
 536
 537             x2 += QuarterCmPixels;
 538             if(x2 > RulerTextEnd)
 539                 break;
 540
 541             MoveToEx(hdc, x2, y, NULL);
 542             LineTo(hdc, x2, y+2);
 543
 544             x += CmPixels;
 545             if(x > RulerTextEnd)
 546                 break;
 547
 548             wsprintfW(str, format, i);
 549             TextOutW(hdc, x, 5, str, lstrlenW(str));
 550         }
 551         DeleteObject(hFont);
 552     }
 553
 554     BitBlt(hdcRuler, 0, 0, drawRect->right, drawRect->bottom, hdc, 0, 0, SRCAND);
 555 }
 556
 557 static void paint_ruler(HWND hWnd, long EditLeftmost, BOOL NewMetrics)
 558 {
 559     PAINTSTRUCT ps;
 560     HDC hdc = BeginPaint(hWnd, &ps);
 561     HDC hdcPrint = make_dc();
 562     RECT printRect = get_print_rect(hdcPrint);
 563     RECT drawRect;
 564     HBRUSH hBrush = CreateSolidBrush(GetSysColor(COLOR_MENU));
 565
 566     GetClientRect(hWnd, &drawRect);
 567     FillRect(hdc, &drawRect, hBrush);
 568
 569     drawRect.top += 3;
 570     drawRect.bottom -= 3;
 571     drawRect.left = EditLeftmost;
 572     drawRect.right = twips_to_pixels(printRect.right - margins.left, GetDeviceCaps(hdc, LOGPIXELSX));
 573     FillRect(hdc, &drawRect, GetStockObject(WHITE_BRUSH));
 574
 575     drawRect.top--;
 576     drawRect.bottom++;
 577     DrawEdge(hdc, &drawRect, EDGE_SUNKEN, BF_RECT);
 578
 579     drawRect.left = drawRect.right - 1;
 580     drawRect.right = twips_to_pixels(printRect.right + margins.right - margins.left, GetDeviceCaps(hdc, LOGPIXELSX));
 581     DrawEdge(hdc, &drawRect, EDGE_ETCHED, BF_RECT);
 582
 583     drawRect.left = 0;
 584     drawRect.top = 0;
 585     add_ruler_units(hdc, &drawRect, NewMetrics, EditLeftmost);
 586
 587     SelectObject(hdc, GetStockObject(BLACK_BRUSH));
 588     DeleteObject(hBrush);
 589     DeleteDC(hdcPrint);
 590     EndPaint(hWnd, &ps);
 591 }
 592
 593 LRESULT CALLBACK ruler_proc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 594 {
 595     static WNDPROC pPrevRulerProc;
 596     static long EditLeftmost;
 597     static BOOL NewMetrics;
 598
 599     switch(msg)
 600     {
 601         case WM_USER:
 602             if(wParam)
 603             {
 604                 EditLeftmost = ((POINTL*)wParam)->x;
 605                 pPrevRulerProc = (WNDPROC)lParam;
 606             }
 607             NewMetrics = TRUE;
 608             break;
 609
 610         case WM_PAINT:
 611             paint_ruler(hWnd, EditLeftmost, NewMetrics);
 612             break;
 613
 614         default:
 615             return CallWindowProcW(pPrevRulerProc, hWnd, msg, wParam, lParam);
 616     }
 617
 618     return 0;
 619 }
 620
 621 static void draw_preview_page(HDC hdc, HDC* hdcSized, FORMATRANGE* lpFr, float ratio, int bmNewWidth, int bmNewHeight, int bmWidth, int bmHeight)
 622 {
 623     HBITMAP hBitmapScaled = CreateCompatibleBitmap(hdc, bmNewWidth, bmNewHeight);
 624     HPEN hPen;
 625     int TopMargin = (int)((float)twips_to_pixels(lpFr->rc.top, GetDeviceCaps(hdc, LOGPIXELSX)) * ratio);
 626     int BottomMargin = (int)((float)twips_to_pixels(lpFr->rc.bottom, GetDeviceCaps(hdc, LOGPIXELSX)) * ratio);
 627     int LeftMargin = (int)((float)twips_to_pixels(lpFr->rc.left, GetDeviceCaps(hdc, LOGPIXELSY)) * ratio);
 628     int RightMargin = (int)((float)twips_to_pixels(lpFr->rc.right, GetDeviceCaps(hdc, LOGPIXELSY)) * ratio);
 629
 630     if(*hdcSized)
 631         DeleteDC(*hdcSized);
 632     *hdcSized = CreateCompatibleDC(hdc);
 633     SelectObject(*hdcSized, hBitmapScaled);
 634
 635     StretchBlt(*hdcSized, 0, 0, bmNewWidth, bmNewHeight, hdc, 0, 0, bmWidth, bmHeight, SRCCOPY);
 636
 637     /* Draw margin lines */
 638     hPen = CreatePen(PS_DOT, 1, RGB(0,0,0));
 639     SelectObject(*hdcSized, hPen);
 640
 641     MoveToEx(*hdcSized, 0, TopMargin, NULL);
 642     LineTo(*hdcSized, bmNewWidth, TopMargin);
 643     MoveToEx(*hdcSized, 0, BottomMargin, NULL);
 644     LineTo(*hdcSized, bmNewWidth, BottomMargin);
 645
 646     MoveToEx(*hdcSized, LeftMargin, 0, NULL);
 647     LineTo(*hdcSized, LeftMargin, bmNewHeight);
 648     MoveToEx(*hdcSized, RightMargin, 0, NULL);
 649     LineTo(*hdcSized, RightMargin, bmNewHeight);
 650
 651 }
 652
 653 static void draw_preview(HWND hEditorWnd, FORMATRANGE* lpFr, int bmWidth, int bmHeight, RECT* paper, int page)
 654 {
 655     HBITMAP hBitmapCapture = CreateCompatibleBitmap(lpFr->hdc, bmWidth, bmHeight);
 656
 657     char_from_pagenum(hEditorWnd, lpFr, page);
 658     SelectObject(lpFr->hdc, hBitmapCapture);
 659     FillRect(lpFr->hdc, paper, GetStockObject(WHITE_BRUSH));
 660     SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE, (LPARAM)lpFr);
 661     /* EM_FORMATRANGE sets fr.rc to indicate the area printed in, but we want to
 662        keep the original for drawing margins */
 663     lpFr->rc = get_print_rect(lpFr->hdcTarget);
 664     SendMessageW(hEditorWnd, EM_FORMATRANGE, FALSE, 0);
 665 }
 666
 667 LRESULT print_preview(HWND hMainWnd)
 668 {
 669     FORMATRANGE fr;
 670     GETTEXTLENGTHEX gt;
 671     HDC hdc;
 672     RECT window, background;
 673     int bmWidth, bmHeight, bmNewWidth, bmNewHeight;
 674     float ratioWidth, ratioHeight, ratio;
 675     int xOffset, yOffset;
 676     int barheight;
 677     float spacing = 20.0;
 678     HWND hReBar = GetDlgItem(hMainWnd, IDC_REBAR);
 679     PAINTSTRUCT ps;
 680
 681     hdc = BeginPaint(hMainWnd, &ps);
 682     GetClientRect(hMainWnd, &window);
 683
 684     fr.hdcTarget = make_dc();
 685     fr.rc = get_print_rect(fr.hdcTarget);
 686     fr.rcPage.left = 0;
 687     fr.rcPage.top = 0;
 688     fr.rcPage.bottom = fr.rc.bottom + margins.bottom;
 689     fr.rcPage.right = fr.rc.right + margins.right;
 690
 691     bmWidth = twips_to_pixels(fr.rcPage.right, GetDeviceCaps(hdc, LOGPIXELSX));
 692     bmHeight = twips_to_pixels(fr.rcPage.bottom, GetDeviceCaps(hdc, LOGPIXELSY));
 693
 694     if(!preview.hdc)
 695     {
 696         RECT paper;
 697         HWND hEditorWnd = GetDlgItem(hMainWnd, IDC_EDITOR);
 698
 699         preview.hdc = CreateCompatibleDC(hdc);
 700
 701         if(preview.hdc2)
 702         {
 703             if(preview.hdc2 != (HDC)-1)
 704                 DeleteDC(preview.hdc2);
 705             preview.hdc2 = CreateCompatibleDC(hdc);
 706         }
 707
 708         fr.hdc = preview.hdc;
 709         gt.flags = GTL_DEFAULT;
 710         gt.codepage = 1200;
 711         fr.chrg.cpMin = 0;
 712         fr.chrg.cpMax = SendMessageW(hEditorWnd, EM_GETTEXTLENGTHEX, (WPARAM)&gt, 0);
 713
 714         paper.left = 0;
 715         paper.right = bmWidth;
 716         paper.top = 0;
 717         paper.bottom = bmHeight;
 718
 719         if(!preview.pages)
 720             preview.pages = get_num_pages(hEditorWnd, fr);
 721
 722         fr.hdc = preview.hdc;
 723         draw_preview(hEditorWnd, &fr, bmWidth, bmHeight, &paper, preview.page);
 724
 725         if(preview.hdc2)
 726         {
 727             fr.hdc = preview.hdc2;
 728             draw_preview(hEditorWnd, &fr, bmWidth, bmHeight, &paper, preview.page + 1);
 729         }
 730
 731         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_PREVPAGE), preview.page > 1);
 732         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_NEXTPAGE), preview.hdc2 ?
 733                                                               (preview.page + 1) < preview.pages :
 734                                                               preview.page < preview.pages);
 735         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_NUMPAGES), preview.pages > 1);
 736     }
 737
 738     barheight = SendMessageW(hReBar, RB_GETBARHEIGHT, 0, 0);
 739     ratioHeight = ((float)window.bottom - spacing - (float)barheight) / (float)bmHeight;
 740
 741     if(preview.hdc2)
 742         ratioWidth = ((float)window.right / 2.0 - spacing * 2.0) / (float)bmWidth;
 743     else
 744         ratioWidth = ((float)window.right - spacing * 3.0) / (float)bmWidth;
 745
 746     if(ratioWidth > ratioHeight)
 747         ratio = ratioHeight;
 748     else
 749         ratio = ratioWidth;
 750
 751     bmNewWidth = (int)((float)bmWidth * ratio);
 752     bmNewHeight = (int)((float)bmHeight * ratio);
 753
 754     yOffset = ((window.bottom - bmNewHeight + barheight) / 2);
 755
 756     if(!preview.hdc2)
 757         xOffset = (window.right - bmNewWidth) / 2;
 758     else
 759         xOffset = (window.right - bmNewWidth * 2) / 2;
 760
 761     window.top = barheight;
 762     FillRect(hdc, &window, GetStockObject(GRAY_BRUSH));
 763
 764     background.left = xOffset - 2;
 765     background.right = xOffset + bmNewWidth + 2;
 766     background.top = yOffset - 2;
 767     background.bottom = yOffset + bmNewHeight + 2;
 768
 769     FillRect(hdc, &background, GetStockObject(BLACK_BRUSH));
 770
 771     if(window.right != preview.window.right || window.bottom != preview.window.bottom)
 772     {
 773         draw_preview_page(preview.hdc, &preview.hdcSized, &fr, ratio, bmNewWidth, bmNewHeight, bmWidth, bmHeight);
 774
 775         if(preview.hdc2)
 776         {
 777             background.left += bmNewWidth + spacing;
 778             background.right += bmNewWidth + spacing;
 779
 780             FillRect(hdc, &background, GetStockObject(BLACK_BRUSH));
 781
 782             draw_preview_page(preview.hdc2, &preview.hdcSized2, &fr, ratio, bmNewWidth, bmNewHeight, bmWidth, bmHeight);
 783         }
 784     }
 785
 786     BitBlt(hdc, xOffset, yOffset, bmNewWidth, bmNewHeight, preview.hdcSized, 0, 0, SRCCOPY);
 787
 788     if(preview.hdc2)
 789     {
 790         BitBlt(hdc, xOffset + bmNewWidth + spacing, yOffset, bmNewWidth, bmNewHeight, preview.hdcSized2, 0, 0, SRCCOPY);
 791     }
 792
 793     DeleteDC(fr.hdcTarget);
 794     preview.window = window;
 795
 796     EndPaint(hMainWnd, &ps);
 797
 798     return 0;
 799 }
 800
 801 static void update_preview(HWND hWnd)
 802 {
 803     RECT rc;
 804
 805     DeleteDC(preview.hdc);
 806     preview.hdc = 0;
 807
 808     preview.window.right = 0;
 809
 810     GetClientRect(hWnd, &rc);
 811     rc.top += SendMessageW(GetDlgItem(hWnd, IDC_REBAR), RB_GETBARHEIGHT, 0, 0);
 812     InvalidateRect(hWnd, &rc, TRUE);
 813 }
 814
 815 LRESULT preview_command(HWND hWnd, WPARAM wParam)
 816 {
 817     switch(LOWORD(wParam))
 818     {
 819         case ID_FILE_EXIT:
 820             PostMessageW(hWnd, WM_CLOSE, 0, 0);
 821             break;
 822
 823         case ID_PREVIEW_NEXTPAGE:
 824         case ID_PREVIEW_PREVPAGE:
 825         {
 826             if(LOWORD(wParam) == ID_PREVIEW_NEXTPAGE)
 827                 preview.page++;
 828             else
 829                 preview.page--;
 830
 831             update_preview(hWnd);
 832         }
 833         break;
 834
 835         case ID_PREVIEW_NUMPAGES:
 836         {
 837             HWND hReBar = GetDlgItem(hWnd, IDC_REBAR);
 838             WCHAR name[MAX_STRING_LEN];
 839             HINSTANCE hInst = (HINSTANCE)GetWindowLongPtrW(hWnd, GWLP_HINSTANCE);
 840
 841             if(preview.hdc2)
 842             {
 843                 DeleteDC(preview.hdc2);
 844                 preview.hdc2 = 0;
 845             } else
 846             {
 847                 if(preview.page == preview.pages)
 848                     preview.page--;
 849                 preview.hdc2 = (HDC)-1;
 850             }
 851
 852             LoadStringW(hInst, preview.hdc2 ? STRING_PREVIEW_ONEPAGE : STRING_PREVIEW_TWOPAGES,
 853                         name, MAX_STRING_LEN);
 854
 855             SetWindowTextW(GetDlgItem(hReBar, ID_PREVIEW_NUMPAGES), name);
 856             update_preview(hWnd);
 857         }
 858         break;
 859
 860         case ID_PRINT:
 861             dialog_print(hWnd, preview.wszFileName);
 862             SendMessageW(hWnd, WM_CLOSE, 0, 0);
 863             break;
 864     }
 865
 866     return 0;
 867 }