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, ULongToHandle(command), hInstance, NULL);
  99
 100     rb.cbSize = REBARBANDINFOW_V6_SIZE;
 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
 183     if(wordWrap == ID_WORDWRAP_MARGIN)
 184     {
 185         int width = 0;
 186         LRESULT result;
 187         HDC hdc = make_dc();
 188         RECT rc = get_print_rect(hdc);
 189
 190         width = rc.right - rc.left;
 191         if(!hdc)
 192         {
 193             HDC hMaindc = GetDC(hMainWnd);
 194             hdc = CreateCompatibleDC(hMaindc);
 195             ReleaseDC(hMainWnd, hMaindc);
 196         }
 197         result = SendMessageW(hEditorWnd, EM_SETTARGETDEVICE, (WPARAM)hdc, width);
 198         DeleteDC(hdc);
 199         if (result)
 200             return;
 201         /* otherwise EM_SETTARGETDEVICE failed, so fall back on wrapping
 202          * to window using the NULL DC. */
 203     }
 204
 205     if (wordWrap != ID_WORDWRAP_NONE) {
 206         SendMessageW(hEditorWnd, EM_SETTARGETDEVICE, 0, 0);
 207     } else {
 208         SendMessageW(hEditorWnd, EM_SETTARGETDEVICE, 0, 1);
 209     }
 210
 211 }
 212
 213 static LPWSTR dialog_print_to_file(HWND hMainWnd)
 214 {
 215     OPENFILENAMEW ofn;
 216     static WCHAR file[MAX_PATH] = {'O','U','T','P','U','T','.','P','R','N',0};
 217     static const WCHAR defExt[] = {'P','R','N',0};
 218     static LPWSTR file_filter;
 219
 220     if(!file_filter)
 221         file_filter = get_print_file_filter(hMainWnd);
 222
 223     ZeroMemory(&ofn, sizeof(ofn));
 224
 225     ofn.lStructSize = sizeof(ofn);
 226     ofn.Flags = OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
 227     ofn.hwndOwner = hMainWnd;
 228     ofn.lpstrFilter = file_filter;
 229     ofn.lpstrFile = file;
 230     ofn.nMaxFile = MAX_PATH;
 231     ofn.lpstrDefExt = defExt;
 232
 233     if(GetSaveFileNameW(&ofn))
 234         return file;
 235     else
 236         return FALSE;
 237 }
 238
 239 static int get_num_pages(HWND hEditorWnd, FORMATRANGE fr)
 240 {
 241     int page = 0;
 242     fr.chrg.cpMin = 0;
 243
 244     do
 245     {
 246         page++;
 247         fr.chrg.cpMin = SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE,
 248                                      (LPARAM)&fr);
 249     }
 250     while(fr.chrg.cpMin && fr.chrg.cpMin < fr.chrg.cpMax);
 251
 252     return page;
 253 }
 254
 255 static void char_from_pagenum(HWND hEditorWnd, FORMATRANGE *fr, int page)
 256 {
 257     int i;
 258
 259     fr->chrg.cpMin = 0;
 260
 261     for(i = 1; i < page; i++)
 262     {
 263         fr->chrg.cpMin = SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE, (LPARAM)fr);
 264     }
 265 }
 266
 267 static HWND get_ruler_wnd(HWND hMainWnd)
 268 {
 269     return GetDlgItem(GetDlgItem(hMainWnd, IDC_REBAR), IDC_RULER);
 270 }
 271
 272 void redraw_ruler(HWND hRulerWnd)
 273 {
 274     RECT rc;
 275
 276     GetClientRect(hRulerWnd, &rc);
 277     InvalidateRect(hRulerWnd, &rc, TRUE);
 278 }
 279
 280 static void update_ruler(HWND hRulerWnd)
 281 {
 282      SendMessageW(hRulerWnd, WM_USER, 0, 0);
 283      redraw_ruler(hRulerWnd);
 284 }
 285
 286 static void print(LPPRINTDLGW pd, LPWSTR wszFileName)
 287 {
 288     FORMATRANGE fr;
 289     DOCINFOW di;
 290     HWND hEditorWnd = GetDlgItem(pd->hwndOwner, IDC_EDITOR);
 291     int printedPages = 0;
 292
 293     fr.hdc = pd->hDC;
 294     fr.hdcTarget = pd->hDC;
 295
 296     fr.rc = get_print_rect(fr.hdc);
 297     fr.rcPage.left = 0;
 298     fr.rcPage.right = fr.rc.right + margins.right;
 299     fr.rcPage.top = 0;
 300     fr.rcPage.bottom = fr.rc.bottom + margins.bottom;
 301
 302     ZeroMemory(&di, sizeof(di));
 303     di.cbSize = sizeof(di);
 304     di.lpszDocName = wszFileName;
 305
 306     if(pd->Flags & PD_PRINTTOFILE)
 307     {
 308         di.lpszOutput = dialog_print_to_file(pd->hwndOwner);
 309         if(!di.lpszOutput)
 310             return;
 311     }
 312
 313     if(pd->Flags & PD_SELECTION)
 314     {
 315         SendMessageW(hEditorWnd, EM_EXGETSEL, 0, (LPARAM)&fr.chrg);
 316     } else
 317     {
 318         GETTEXTLENGTHEX gt;
 319         gt.flags = GTL_DEFAULT;
 320         gt.codepage = 1200;
 321         fr.chrg.cpMin = 0;
 322         fr.chrg.cpMax = SendMessageW(hEditorWnd, EM_GETTEXTLENGTHEX, (WPARAM)&gt, 0);
 323
 324         if(pd->Flags & PD_PAGENUMS)
 325             char_from_pagenum(hEditorWnd, &fr, pd->nToPage);
 326     }
 327
 328     StartDocW(fr.hdc, &di);
 329     do
 330     {
 331         if(StartPage(fr.hdc) <= 0)
 332             break;
 333
 334         fr.chrg.cpMin = SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE, (LPARAM)&fr);
 335
 336         if(EndPage(fr.hdc) <= 0)
 337             break;
 338
 339         printedPages++;
 340         if((pd->Flags & PD_PAGENUMS) && (printedPages > (pd->nToPage - pd->nFromPage)))
 341             break;
 342     }
 343     while(fr.chrg.cpMin && fr.chrg.cpMin < fr.chrg.cpMax);
 344
 345     EndDoc(fr.hdc);
 346     SendMessageW(hEditorWnd, EM_FORMATRANGE, FALSE, 0);
 347 }
 348
 349 void dialog_printsetup(HWND hMainWnd)
 350 {
 351     PAGESETUPDLGW ps;
 352
 353     ZeroMemory(&ps, sizeof(ps));
 354     ps.lStructSize = sizeof(ps);
 355     ps.hwndOwner = hMainWnd;
 356     ps.Flags = PSD_INHUNDREDTHSOFMILLIMETERS | PSD_MARGINS;
 357     ps.rtMargin.left = twips_to_centmm(margins.left);
 358     ps.rtMargin.right = twips_to_centmm(margins.right);
 359     ps.rtMargin.top = twips_to_centmm(margins.top);
 360     ps.rtMargin.bottom = twips_to_centmm(margins.bottom);
 361     ps.hDevMode = devMode;
 362     ps.hDevNames = devNames;
 363
 364     if(PageSetupDlgW(&ps))
 365     {
 366         margins.left = centmm_to_twips(ps.rtMargin.left);
 367         margins.right = centmm_to_twips(ps.rtMargin.right);
 368         margins.top = centmm_to_twips(ps.rtMargin.top);
 369         margins.bottom = centmm_to_twips(ps.rtMargin.bottom);
 370         devMode = ps.hDevMode;
 371         devNames = ps.hDevNames;
 372         update_ruler(get_ruler_wnd(hMainWnd));
 373     }
 374 }
 375
 376 void get_default_printer_opts(void)
 377 {
 378     PRINTDLGW pd;
 379     ZeroMemory(&pd, sizeof(pd));
 380
 381     ZeroMemory(&pd, sizeof(pd));
 382     pd.lStructSize = sizeof(pd);
 383     pd.Flags = PD_RETURNDC | PD_RETURNDEFAULT;
 384     pd.hDevMode = devMode;
 385
 386     PrintDlgW(&pd);
 387
 388     devMode = pd.hDevMode;
 389     devNames = pd.hDevNames;
 390 }
 391
 392 void print_quick(LPWSTR wszFileName)
 393 {
 394     PRINTDLGW pd;
 395
 396     ZeroMemory(&pd, sizeof(pd));
 397     pd.hDC = make_dc();
 398
 399     print(&pd, wszFileName);
 400 }
 401
 402 void dialog_print(HWND hMainWnd, LPWSTR wszFileName)
 403 {
 404     PRINTDLGW pd;
 405     HWND hEditorWnd = GetDlgItem(hMainWnd, IDC_EDITOR);
 406     int from = 0;
 407     int to = 0;
 408
 409     ZeroMemory(&pd, sizeof(pd));
 410     pd.lStructSize = sizeof(pd);
 411     pd.hwndOwner = hMainWnd;
 412     pd.Flags = PD_RETURNDC | PD_USEDEVMODECOPIESANDCOLLATE;
 413     pd.nMinPage = 1;
 414     pd.nMaxPage = -1;
 415     pd.hDevMode = devMode;
 416     pd.hDevNames = devNames;
 417
 418     SendMessageW(hEditorWnd, EM_GETSEL, (WPARAM)&from, (LPARAM)&to);
 419     if(from == to)
 420         pd.Flags |= PD_NOSELECTION;
 421
 422     if(PrintDlgW(&pd))
 423     {
 424         devMode = pd.hDevMode;
 425         devNames = pd.hDevNames;
 426         print(&pd, wszFileName);
 427         update_ruler(get_ruler_wnd(hMainWnd));
 428     }
 429 }
 430
 431 static void preview_bar_show(HWND hMainWnd, BOOL show)
 432 {
 433     HWND hReBar = GetDlgItem(hMainWnd, IDC_REBAR);
 434     int i;
 435
 436     if(show)
 437     {
 438         REBARBANDINFOW rb;
 439         HWND hStatic;
 440
 441         AddTextButton(hReBar, STRING_PREVIEW_PRINT, ID_PRINT, BANDID_PREVIEW_BTN1);
 442         AddTextButton(hReBar, STRING_PREVIEW_NEXTPAGE, ID_PREVIEW_NEXTPAGE, BANDID_PREVIEW_BTN2);
 443         AddTextButton(hReBar, STRING_PREVIEW_PREVPAGE, ID_PREVIEW_PREVPAGE, BANDID_PREVIEW_BTN3);
 444         AddTextButton(hReBar, STRING_PREVIEW_TWOPAGES, ID_PREVIEW_NUMPAGES, BANDID_PREVIEW_BTN4);
 445         AddTextButton(hReBar, STRING_PREVIEW_CLOSE, ID_FILE_EXIT, BANDID_PREVIEW_BTN5);
 446
 447         hStatic = CreateWindowW(WC_STATICW, NULL,
 448                                 WS_VISIBLE | WS_CHILD, 0, 0, 0, 0,
 449                                 hReBar, NULL, NULL, NULL);
 450
 451         rb.cbSize = REBARBANDINFOW_V6_SIZE;
 452         rb.fMask = RBBIM_SIZE | RBBIM_CHILDSIZE | RBBIM_STYLE | RBBIM_CHILD | RBBIM_IDEALSIZE | RBBIM_ID;
 453         rb.fStyle = RBBS_NOGRIPPER | RBBS_VARIABLEHEIGHT;
 454         rb.hwndChild = hStatic;
 455         rb.cyChild = rb.cyMinChild = 22;
 456         rb.cx = rb.cxMinChild = 90;
 457         rb.cxIdeal = 100;
 458         rb.wID = BANDID_PREVIEW_BUFFER;
 459
 460         SendMessageW(hReBar, RB_INSERTBAND, -1, (LPARAM)&rb);
 461     } else
 462     {
 463         for(i = 0; i <= PREVIEW_BUTTONS; i++)
 464             SendMessageW(hReBar, RB_DELETEBAND, SendMessageW(hReBar, RB_IDTOINDEX, BANDID_PREVIEW_BTN1+i, 0), 0);
 465     }
 466 }
 467
 468 void init_preview(HWND hMainWnd, LPWSTR wszFileName)
 469 {
 470     preview.page = 1;
 471     preview.hdc = 0;
 472     preview.hdc2 = 0;
 473     preview.wszFileName = wszFileName;
 474     preview_bar_show(hMainWnd, TRUE);
 475 }
 476
 477 void close_preview(HWND hMainWnd)
 478 {
 479     preview.window.right = 0;
 480     preview.window.bottom = 0;
 481     preview.page = 0;
 482     preview.pages = 0;
 483
 484     preview_bar_show(hMainWnd, FALSE);
 485 }
 486
 487 BOOL preview_isactive(void)
 488 {
 489     return preview.page != 0;
 490 }
 491
 492 static void add_ruler_units(HDC hdcRuler, RECT* drawRect, BOOL NewMetrics, LONG EditLeftmost)
 493 {
 494     static HDC hdc;
 495
 496     if(NewMetrics)
 497     {
 498         static HBITMAP hBitmap;
 499         int i, x, y, RulerTextEnd;
 500         int CmPixels;
 501         int QuarterCmPixels;
 502         HFONT hFont;
 503         WCHAR FontName[] = {'M','S',' ','S','a','n','s',' ','S','e','r','i','f',0};
 504
 505         if(hdc)
 506         {
 507             DeleteDC(hdc);
 508             DeleteObject(hBitmap);
 509         }
 510
 511         hdc = CreateCompatibleDC(0);
 512
 513         CmPixels = twips_to_pixels(centmm_to_twips(1000), GetDeviceCaps(hdc, LOGPIXELSX));
 514         QuarterCmPixels = (int)((float)CmPixels / 4.0);
 515
 516         hBitmap = CreateCompatibleBitmap(hdc, drawRect->right, drawRect->bottom);
 517         SelectObject(hdc, hBitmap);
 518         FillRect(hdc, drawRect, GetStockObject(WHITE_BRUSH));
 519
 520         hFont = CreateFontW(10, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, FontName);
 521
 522         SelectObject(hdc, hFont);
 523         SetBkMode(hdc, TRANSPARENT);
 524         SetTextAlign(hdc, TA_CENTER);
 525         y = (int)(((float)drawRect->bottom - (float)drawRect->top) / 2.0) + 1;
 526         RulerTextEnd = drawRect->right - EditLeftmost + 1;
 527         for(i = 1, x = EditLeftmost; x < (drawRect->right - EditLeftmost + 1); i ++)
 528         {
 529             WCHAR str[3];
 530             WCHAR format[] = {'%','d',0};
 531             int x2 = x;
 532
 533             x2 += QuarterCmPixels;
 534             if(x2 > RulerTextEnd)
 535                 break;
 536
 537             MoveToEx(hdc, x2, y, NULL);
 538             LineTo(hdc, x2, y+2);
 539
 540             x2 += QuarterCmPixels;
 541             if(x2 > RulerTextEnd)
 542                 break;
 543
 544             MoveToEx(hdc, x2, y - 3, NULL);
 545             LineTo(hdc, x2, y + 3);
 546
 547             x2 += QuarterCmPixels;
 548             if(x2 > RulerTextEnd)
 549                 break;
 550
 551             MoveToEx(hdc, x2, y, NULL);
 552             LineTo(hdc, x2, y+2);
 553
 554             x += CmPixels;
 555             if(x > RulerTextEnd)
 556                 break;
 557
 558             wsprintfW(str, format, i);
 559             TextOutW(hdc, x, 5, str, lstrlenW(str));
 560         }
 561         DeleteObject(hFont);
 562     }
 563
 564     BitBlt(hdcRuler, 0, 0, drawRect->right, drawRect->bottom, hdc, 0, 0, SRCAND);
 565 }
 566
 567 static void paint_ruler(HWND hWnd, LONG EditLeftmost, BOOL NewMetrics)
 568 {
 569     PAINTSTRUCT ps;
 570     HDC hdc = BeginPaint(hWnd, &ps);
 571     HDC hdcPrint = make_dc();
 572     RECT printRect = get_print_rect(hdcPrint);
 573     RECT drawRect;
 574     HBRUSH hBrush = CreateSolidBrush(GetSysColor(COLOR_MENU));
 575
 576     GetClientRect(hWnd, &drawRect);
 577     FillRect(hdc, &drawRect, hBrush);
 578
 579     drawRect.top += 3;
 580     drawRect.bottom -= 3;
 581     drawRect.left = EditLeftmost;
 582     drawRect.right = twips_to_pixels(printRect.right - margins.left, GetDeviceCaps(hdc, LOGPIXELSX));
 583     FillRect(hdc, &drawRect, GetStockObject(WHITE_BRUSH));
 584
 585     drawRect.top--;
 586     drawRect.bottom++;
 587     DrawEdge(hdc, &drawRect, EDGE_SUNKEN, BF_RECT);
 588
 589     drawRect.left = drawRect.right - 1;
 590     drawRect.right = twips_to_pixels(printRect.right + margins.right - margins.left, GetDeviceCaps(hdc, LOGPIXELSX));
 591     DrawEdge(hdc, &drawRect, EDGE_ETCHED, BF_RECT);
 592
 593     drawRect.left = 0;
 594     drawRect.top = 0;
 595     add_ruler_units(hdc, &drawRect, NewMetrics, EditLeftmost);
 596
 597     SelectObject(hdc, GetStockObject(BLACK_BRUSH));
 598     DeleteObject(hBrush);
 599     DeleteDC(hdcPrint);
 600     EndPaint(hWnd, &ps);
 601 }
 602
 603 LRESULT CALLBACK ruler_proc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 604 {
 605     static WNDPROC pPrevRulerProc;
 606     static LONG EditLeftmost;
 607     static BOOL NewMetrics;
 608
 609     switch(msg)
 610     {
 611         case WM_USER:
 612             if(wParam)
 613             {
 614                 EditLeftmost = ((POINTL*)wParam)->x;
 615                 pPrevRulerProc = (WNDPROC)lParam;
 616             }
 617             NewMetrics = TRUE;
 618             break;
 619
 620         case WM_PAINT:
 621             paint_ruler(hWnd, EditLeftmost, NewMetrics);
 622             break;
 623
 624         default:
 625             return CallWindowProcW(pPrevRulerProc, hWnd, msg, wParam, lParam);
 626     }
 627
 628     return 0;
 629 }
 630
 631 static void draw_preview_page(HDC hdc, HDC* hdcSized, FORMATRANGE* lpFr, float ratio, int bmNewWidth, int bmNewHeight, int bmWidth, int bmHeight)
 632 {
 633     HBITMAP hBitmapScaled = CreateCompatibleBitmap(hdc, bmNewWidth, bmNewHeight);
 634     HPEN hPen;
 635     int TopMargin = (int)((float)twips_to_pixels(lpFr->rc.top, GetDeviceCaps(hdc, LOGPIXELSX)) * ratio);
 636     int BottomMargin = (int)((float)twips_to_pixels(lpFr->rc.bottom, GetDeviceCaps(hdc, LOGPIXELSX)) * ratio);
 637     int LeftMargin = (int)((float)twips_to_pixels(lpFr->rc.left, GetDeviceCaps(hdc, LOGPIXELSY)) * ratio);
 638     int RightMargin = (int)((float)twips_to_pixels(lpFr->rc.right, GetDeviceCaps(hdc, LOGPIXELSY)) * ratio);
 639
 640     if(*hdcSized)
 641         DeleteDC(*hdcSized);
 642     *hdcSized = CreateCompatibleDC(hdc);
 643     SelectObject(*hdcSized, hBitmapScaled);
 644
 645     StretchBlt(*hdcSized, 0, 0, bmNewWidth, bmNewHeight, hdc, 0, 0, bmWidth, bmHeight, SRCCOPY);
 646
 647     /* Draw margin lines */
 648     hPen = CreatePen(PS_DOT, 1, RGB(0,0,0));
 649     SelectObject(*hdcSized, hPen);
 650
 651     MoveToEx(*hdcSized, 0, TopMargin, NULL);
 652     LineTo(*hdcSized, bmNewWidth, TopMargin);
 653     MoveToEx(*hdcSized, 0, BottomMargin, NULL);
 654     LineTo(*hdcSized, bmNewWidth, BottomMargin);
 655
 656     MoveToEx(*hdcSized, LeftMargin, 0, NULL);
 657     LineTo(*hdcSized, LeftMargin, bmNewHeight);
 658     MoveToEx(*hdcSized, RightMargin, 0, NULL);
 659     LineTo(*hdcSized, RightMargin, bmNewHeight);
 660
 661 }
 662
 663 static void draw_preview(HWND hEditorWnd, FORMATRANGE* lpFr, int bmWidth, int bmHeight, RECT* paper, int page)
 664 {
 665     HBITMAP hBitmapCapture = CreateCompatibleBitmap(lpFr->hdc, bmWidth, bmHeight);
 666
 667     char_from_pagenum(hEditorWnd, lpFr, page);
 668     SelectObject(lpFr->hdc, hBitmapCapture);
 669     FillRect(lpFr->hdc, paper, GetStockObject(WHITE_BRUSH));
 670     SendMessageW(hEditorWnd, EM_FORMATRANGE, TRUE, (LPARAM)lpFr);
 671     /* EM_FORMATRANGE sets fr.rc to indicate the area printed in, but we want to
 672        keep the original for drawing margins */
 673     lpFr->rc = get_print_rect(lpFr->hdcTarget);
 674     SendMessageW(hEditorWnd, EM_FORMATRANGE, FALSE, 0);
 675 }
 676
 677 LRESULT print_preview(HWND hMainWnd)
 678 {
 679     FORMATRANGE fr;
 680     GETTEXTLENGTHEX gt;
 681     HDC hdc;
 682     RECT window, background;
 683     int bmWidth, bmHeight, bmNewWidth, bmNewHeight;
 684     float ratioWidth, ratioHeight, ratio;
 685     int xOffset, yOffset;
 686     int barheight;
 687     float spacing = 20.0;
 688     HWND hReBar = GetDlgItem(hMainWnd, IDC_REBAR);
 689     PAINTSTRUCT ps;
 690
 691     hdc = BeginPaint(hMainWnd, &ps);
 692     GetClientRect(hMainWnd, &window);
 693
 694     fr.hdcTarget = make_dc();
 695     fr.rc = get_print_rect(fr.hdcTarget);
 696     fr.rcPage.left = 0;
 697     fr.rcPage.top = 0;
 698     fr.rcPage.bottom = fr.rc.bottom + margins.bottom;
 699     fr.rcPage.right = fr.rc.right + margins.right;
 700
 701     bmWidth = twips_to_pixels(fr.rcPage.right, GetDeviceCaps(hdc, LOGPIXELSX));
 702     bmHeight = twips_to_pixels(fr.rcPage.bottom, GetDeviceCaps(hdc, LOGPIXELSY));
 703
 704     if(!preview.hdc)
 705     {
 706         RECT paper;
 707         HWND hEditorWnd = GetDlgItem(hMainWnd, IDC_EDITOR);
 708
 709         preview.hdc = CreateCompatibleDC(hdc);
 710
 711         if(preview.hdc2)
 712         {
 713             if(preview.hdc2 != (HDC)-1)
 714                 DeleteDC(preview.hdc2);
 715             preview.hdc2 = CreateCompatibleDC(hdc);
 716         }
 717
 718         fr.hdc = preview.hdc;
 719         gt.flags = GTL_DEFAULT;
 720         gt.codepage = 1200;
 721         fr.chrg.cpMin = 0;
 722         fr.chrg.cpMax = SendMessageW(hEditorWnd, EM_GETTEXTLENGTHEX, (WPARAM)&gt, 0);
 723
 724         paper.left = 0;
 725         paper.right = bmWidth;
 726         paper.top = 0;
 727         paper.bottom = bmHeight;
 728
 729         if(!preview.pages)
 730             preview.pages = get_num_pages(hEditorWnd, fr);
 731
 732         fr.hdc = preview.hdc;
 733         draw_preview(hEditorWnd, &fr, bmWidth, bmHeight, &paper, preview.page);
 734
 735         if(preview.hdc2)
 736         {
 737             fr.hdc = preview.hdc2;
 738             draw_preview(hEditorWnd, &fr, bmWidth, bmHeight, &paper, preview.page + 1);
 739         }
 740
 741         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_PREVPAGE), preview.page > 1);
 742         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_NEXTPAGE), preview.hdc2 ?
 743                                                               (preview.page + 1) < preview.pages :
 744                                                               preview.page < preview.pages);
 745         EnableWindow(GetDlgItem(hReBar, ID_PREVIEW_NUMPAGES), preview.pages > 1);
 746     }
 747
 748     barheight = SendMessageW(hReBar, RB_GETBARHEIGHT, 0, 0);
 749     ratioHeight = ((float)window.bottom - spacing - (float)barheight) / (float)bmHeight;
 750
 751     if(preview.hdc2)
 752         ratioWidth = ((float)window.right / 2.0 - spacing * 2.0) / (float)bmWidth;
 753     else
 754         ratioWidth = ((float)window.right - spacing * 3.0) / (float)bmWidth;
 755
 756     if(ratioWidth > ratioHeight)
 757         ratio = ratioHeight;
 758     else
 759         ratio = ratioWidth;
 760
 761     bmNewWidth = (int)((float)bmWidth * ratio);
 762     bmNewHeight = (int)((float)bmHeight * ratio);
 763
 764     yOffset = ((window.bottom - bmNewHeight + barheight) / 2);
 765
 766     if(!preview.hdc2)
 767         xOffset = (window.right - bmNewWidth) / 2;
 768     else
 769         xOffset = (window.right - bmNewWidth * 2) / 2;
 770
 771     window.top = barheight;
 772     FillRect(hdc, &window, GetStockObject(GRAY_BRUSH));
 773
 774     background.left = xOffset - 2;
 775     background.right = xOffset + bmNewWidth + 2;
 776     background.top = yOffset - 2;
 777     background.bottom = yOffset + bmNewHeight + 2;
 778
 779     FillRect(hdc, &background, GetStockObject(BLACK_BRUSH));
 780
 781     if(window.right != preview.window.right || window.bottom != preview.window.bottom)
 782     {
 783         draw_preview_page(preview.hdc, &preview.hdcSized, &fr, ratio, bmNewWidth, bmNewHeight, bmWidth, bmHeight);
 784
 785         if(preview.hdc2)
 786         {
 787             background.left += bmNewWidth + spacing;
 788             background.right += bmNewWidth + spacing;
 789
 790             FillRect(hdc, &background, GetStockObject(BLACK_BRUSH));
 791
 792             draw_preview_page(preview.hdc2, &preview.hdcSized2, &fr, ratio, bmNewWidth, bmNewHeight, bmWidth, bmHeight);
 793         }
 794     }
 795
 796     BitBlt(hdc, xOffset, yOffset, bmNewWidth, bmNewHeight, preview.hdcSized, 0, 0, SRCCOPY);
 797
 798     if(preview.hdc2)
 799     {
 800         BitBlt(hdc, xOffset + bmNewWidth + spacing, yOffset, bmNewWidth, bmNewHeight, preview.hdcSized2, 0, 0, SRCCOPY);
 801     }
 802
 803     DeleteDC(fr.hdcTarget);
 804     preview.window = window;
 805
 806     EndPaint(hMainWnd, &ps);
 807
 808     return 0;
 809 }
 810
 811 static void update_preview(HWND hWnd)
 812 {
 813     RECT rc;
 814
 815     DeleteDC(preview.hdc);
 816     preview.hdc = 0;
 817
 818     preview.window.right = 0;
 819
 820     GetClientRect(hWnd, &rc);
 821     rc.top += SendMessageW(GetDlgItem(hWnd, IDC_REBAR), RB_GETBARHEIGHT, 0, 0);
 822     InvalidateRect(hWnd, &rc, TRUE);
 823 }
 824
 825 LRESULT preview_command(HWND hWnd, WPARAM wParam)
 826 {
 827     switch(LOWORD(wParam))
 828     {
 829         case ID_FILE_EXIT:
 830             PostMessageW(hWnd, WM_CLOSE, 0, 0);
 831             break;
 832
 833         case ID_PREVIEW_NEXTPAGE:
 834         case ID_PREVIEW_PREVPAGE:
 835         {
 836             if(LOWORD(wParam) == ID_PREVIEW_NEXTPAGE)
 837                 preview.page++;
 838             else
 839                 preview.page--;
 840
 841             update_preview(hWnd);
 842         }
 843         break;
 844
 845         case ID_PREVIEW_NUMPAGES:
 846         {
 847             HWND hReBar = GetDlgItem(hWnd, IDC_REBAR);
 848             WCHAR name[MAX_STRING_LEN];
 849             HINSTANCE hInst = (HINSTANCE)GetWindowLongPtrW(hWnd, GWLP_HINSTANCE);
 850
 851             if(preview.hdc2)
 852             {
 853                 DeleteDC(preview.hdc2);
 854                 preview.hdc2 = 0;
 855             } else
 856             {
 857                 if(preview.page == preview.pages)
 858                     preview.page--;
 859                 preview.hdc2 = (HDC)-1;
 860             }
 861
 862             LoadStringW(hInst, preview.hdc2 ? STRING_PREVIEW_ONEPAGE : STRING_PREVIEW_TWOPAGES,
 863                         name, MAX_STRING_LEN);
 864
 865             SetWindowTextW(GetDlgItem(hReBar, ID_PREVIEW_NUMPAGES), name);
 866             update_preview(hWnd);
 867         }
 868         break;
 869
 870         case ID_PRINT:
 871             dialog_print(hWnd, preview.wszFileName);
 872             SendMessageW(hWnd, WM_CLOSE, 0, 0);
 873             break;
 874     }
 875
 876     return 0;
 877 }