reactos/base/applications/rapps/richedit.c

   1 /*
   2  * PROJECT:         ReactOS Applications Manager
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            base/applications/rapps/richedit.c
   5  * PURPOSE:         RichEdit functions
   6  * PROGRAMMERS:     Dmitry Chapyshev (dmitry@reactos.org)
   7  */
   8
   9 #include "rapps.h"
  10
  11 #include <shlwapi.h>
  12
  13 HWND hRichEdit;
  14 PWSTR pLink = NULL;
  15
  16 VOID
  17 RichEditOnLink(HWND hwnd, ENLINK *Link)
  18 {
  19     switch (Link->msg)
  20     {
  21         case WM_LBUTTONUP:
  22         case WM_RBUTTONUP:
  23         {
  24             if (pLink) HeapFree(GetProcessHeap(), 0, pLink);
  25
  26             pLink = HeapAlloc(GetProcessHeap(),
  27                               0,
  28                               (max(Link->chrg.cpMin, Link->chrg.cpMax) -
  29                                min(Link->chrg.cpMin, Link->chrg.cpMax) + 1) * sizeof(WCHAR));
  30             if (!pLink)
  31             {
  32                 /* TODO: Error message */
  33                 return;
  34             }
  35
  36             SendMessageW(hRichEdit, EM_SETSEL, Link->chrg.cpMin, Link->chrg.cpMax);
  37             SendMessageW(hRichEdit, EM_GETSELTEXT, 0, (LPARAM)pLink);
  38
  39             ShowPopupMenu(hwnd, IDR_LINKMENU, -1);
  40         }
  41         break;
  42     }
  43 }
  44
  45 static VOID
  46 SetRangeFormatting(LONG Start, LONG End, DWORD dwEffects)
  47 {
  48     CHARFORMAT2 CharFormat;
  49
  50     SendMessageW(hRichEdit, EM_SETSEL, Start, End);
  51
  52     ZeroMemory(&CharFormat, sizeof(CharFormat));
  53
  54     CharFormat.cbSize = sizeof(CharFormat);
  55     CharFormat.dwMask = dwEffects;
  56     CharFormat.dwEffects = dwEffects;
  57
  58     SendMessageW(hRichEdit, EM_SETCHARFORMAT, SCF_WORD | SCF_SELECTION, (LPARAM)&CharFormat);
  59
  60     SendMessageW(hRichEdit, EM_SETSEL, End, End + 1);
  61 }
  62
  63 static LONG
  64 GetRichEditTextLen(VOID)
  65 {
  66     GETTEXTLENGTHEX TxtLenStruct;
  67
  68     TxtLenStruct.flags = GTL_NUMCHARS;
  69     TxtLenStruct.codepage = 1200;
  70
  71     return (LONG) SendMessageW(hRichEdit, EM_GETTEXTLENGTHEX, (WPARAM)&TxtLenStruct, 0);
  72 }
  73
  74 /*
  75  * Insert text (without cleaning old text)
  76  * Supported effects:
  77  *   - CFM_BOLD
  78  *   - CFM_ITALIC
  79  *   - CFM_UNDERLINE
  80  *   - CFM_LINK
  81  */
  82 VOID
  83 InsertRichEditText(LPCWSTR lpszText, DWORD dwEffects)
  84 {
  85     SETTEXTEX SetText;
  86     LONG Len = GetRichEditTextLen();
  87
  88     /* Insert new text */
  89     SetText.flags = ST_SELECTION;
  90     SetText.codepage = 1200;
  91
  92     SendMessageW(hRichEdit, EM_SETTEXTEX, (WPARAM)&SetText, (LPARAM)lpszText);
  93
  94     SetRangeFormatting(Len, Len + wcslen(lpszText),
  95                        (dwEffects == CFM_LINK) ? (PathIsURLW(lpszText) ? dwEffects : 0) : dwEffects);
  96 }
  97
  98 /*
  99  * Clear old text and add new
 100  */
 101 VOID
 102 NewRichEditText(LPCWSTR lpszText, DWORD dwEffects)
 103 {
 104     SetWindowTextW(hRichEdit, L"");
 105     InsertRichEditText(lpszText, dwEffects);
 106 }
 107
 108 BOOL
 109 CreateRichEdit(HWND hwnd)
 110 {
 111     LoadLibraryW(L"riched20.dll");
 112
 113     hRichEdit = CreateWindowExW(0,
 114                                 L"RichEdit20W",
 115                                 NULL,
 116                                 WS_CHILD | WS_VISIBLE | ES_MULTILINE |
 117                                 ES_LEFT | ES_READONLY,
 118                                 205, 28, 465, 100,
 119                                 hwnd,
 120                                 NULL,
 121                                 hInst,
 122                                 NULL);
 123
 124     if (!hRichEdit)
 125     {
 126         /* TODO: Show error message */
 127         return FALSE;
 128     }
 129
 130     SendMessageW(hRichEdit, EM_SETBKGNDCOLOR, 0, GetSysColor(COLOR_BTNFACE));
 131     SendMessageW(hRichEdit, WM_SETFONT, (WPARAM)GetStockObject(DEFAULT_GUI_FONT), 0);
 132     SendMessageW(hRichEdit, EM_SETEVENTMASK, 0, ENM_LINK | ENM_MOUSEEVENTS);
 133     SendMessageW(hRichEdit, EM_SHOWSCROLLBAR, SB_VERT, TRUE);
 134
 135     return TRUE;
 136 }