win32ss/user/winsrv/consrv/popup.c

   1 /*
   2  * LICENSE:         GPL - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Console Server DLL
   4  * FILE:            win32ss/user/winsrv/consrv/popup.c
   5  * PURPOSE:         Console popup windows
   6  * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca@sfr.fr)
   7  *
   8  * NOTE:            Strongly inspired by the DrawBox function
   9  *                  from base/setup/usetup/interface/usetup.c, written by:
  10  *                  Eric Kohl (revision 3753)
  11  *                  Hervé Poussineau (revision 24718)
  12  *                  and *UiDisplayMenu from FreeLdr.
  13  */
  14
  15 /* INCLUDES *******************************************************************/
  16
  17 #include "consrv.h"
  18 #include "popup.h"
  19
  20 #define NDEBUG
  21 #include <debug.h>
  22
  23
  24 /* PRIVATE FUNCTIONS **********************************************************/
  25
  26 NTSTATUS NTAPI
  27 ConDrvFillConsoleOutput(IN PCONSOLE Console,
  28                         IN PTEXTMODE_SCREEN_BUFFER Buffer,
  29                         IN CODE_TYPE CodeType,
  30                         IN CODE_ELEMENT Code,
  31                         IN ULONG NumCodesToWrite,
  32                         IN PCOORD WriteCoord,
  33                         OUT PULONG NumCodesWritten OPTIONAL);
  34 NTSTATUS NTAPI
  35 ConDrvReadConsoleOutput(IN PCONSOLE Console,
  36                         IN PTEXTMODE_SCREEN_BUFFER Buffer,
  37                         IN BOOLEAN Unicode,
  38                         OUT PCHAR_INFO CharInfo/*Buffer*/,
  39                         IN OUT PSMALL_RECT ReadRegion);
  40 NTSTATUS NTAPI
  41 ConDrvWriteConsoleOutput(IN PCONSOLE Console,
  42                          IN PTEXTMODE_SCREEN_BUFFER Buffer,
  43                          IN BOOLEAN Unicode,
  44                          IN PCHAR_INFO CharInfo/*Buffer*/,
  45                          IN OUT PSMALL_RECT WriteRegion);
  46
  47
  48 static VOID
  49 DrawBox(PTEXTMODE_SCREEN_BUFFER Buffer,
  50         IN SHORT xLeft,
  51         IN SHORT yTop,
  52         IN SHORT Width,
  53         IN SHORT Height)
  54 {
  55     COORD coPos;
  56     DWORD Written;
  57
  58     /* Set screen attributes */
  59     coPos.X = xLeft;
  60     for (coPos.Y = yTop; coPos.Y < yTop + Height; coPos.Y++)
  61     {
  62         ConDrvFillConsoleOutput(Buffer->Header.Console,
  63                                 Buffer,
  64                                 CODE_ATTRIBUTE,
  65                                 (CODE_ELEMENT)(WORD)Buffer->PopupDefaultAttrib,
  66                                 Width,
  67                                 &coPos,
  68                                 &Written);
  69     }
  70
  71     /* draw upper left corner */
  72     coPos.X = xLeft;
  73     coPos.Y = yTop;
  74     ConDrvFillConsoleOutput(Buffer->Header.Console,
  75                             Buffer,
  76                             CODE_ASCII,
  77                             (CODE_ELEMENT)(CHAR)0xDA, // '+',
  78                             1,
  79                             &coPos,
  80                             &Written);
  81
  82     /* draw upper edge */
  83     coPos.X = xLeft + 1;
  84     coPos.Y = yTop;
  85     ConDrvFillConsoleOutput(Buffer->Header.Console,
  86                             Buffer,
  87                             CODE_ASCII,
  88                             (CODE_ELEMENT)(CHAR)0xC4, // '-',
  89                             Width - 2,
  90                             &coPos,
  91                             &Written);
  92
  93     /* draw upper right corner */
  94     coPos.X = xLeft + Width - 1;
  95     coPos.Y = yTop;
  96     ConDrvFillConsoleOutput(Buffer->Header.Console,
  97                             Buffer,
  98                             CODE_ASCII,
  99                             (CODE_ELEMENT)(CHAR)0xBF, // '+',
 100                             1,
 101                             &coPos,
 102                             &Written);
 103
 104     /* Draw right edge, inner space and left edge */
 105     for (coPos.Y = yTop + 1; coPos.Y < yTop + Height - 1; coPos.Y++)
 106     {
 107         coPos.X = xLeft;
 108         ConDrvFillConsoleOutput(Buffer->Header.Console,
 109                                 Buffer,
 110                                 CODE_ASCII,
 111                                 (CODE_ELEMENT)(CHAR)0xB3, // '|',
 112                                 1,
 113                                 &coPos,
 114                                 &Written);
 115
 116         coPos.X = xLeft + 1;
 117         ConDrvFillConsoleOutput(Buffer->Header.Console,
 118                                 Buffer,
 119                                 CODE_ASCII,
 120                                 (CODE_ELEMENT)(CHAR)' ',
 121                                 Width - 2,
 122                                 &coPos,
 123                                 &Written);
 124
 125         coPos.X = xLeft + Width - 1;
 126         ConDrvFillConsoleOutput(Buffer->Header.Console,
 127                                 Buffer,
 128                                 CODE_ASCII,
 129                                 (CODE_ELEMENT)(CHAR)0xB3, // '|',
 130                                 1,
 131                                 &coPos,
 132                                 &Written);
 133     }
 134
 135     /* draw lower left corner */
 136     coPos.X = xLeft;
 137     coPos.Y = yTop + Height - 1;
 138     ConDrvFillConsoleOutput(Buffer->Header.Console,
 139                             Buffer,
 140                             CODE_ASCII,
 141                             (CODE_ELEMENT)(CHAR)0xC0, // '+',
 142                             1,
 143                             &coPos,
 144                             &Written);
 145
 146     /* draw lower edge */
 147     coPos.X = xLeft + 1;
 148     coPos.Y = yTop + Height - 1;
 149     ConDrvFillConsoleOutput(Buffer->Header.Console,
 150                             Buffer,
 151                             CODE_ASCII,
 152                             (CODE_ELEMENT)(CHAR)0xC4, // '-',
 153                             Width - 2,
 154                             &coPos,
 155                             &Written);
 156
 157     /* draw lower right corner */
 158     coPos.X = xLeft + Width - 1;
 159     coPos.Y = yTop + Height - 1;
 160     ConDrvFillConsoleOutput(Buffer->Header.Console,
 161                             Buffer,
 162                             CODE_ASCII,
 163                             (CODE_ELEMENT)(CHAR)0xD9, // '+',
 164                             1,
 165                             &coPos,
 166                             &Written);
 167 }
 168
 169
 170 /* PUBLIC FUNCTIONS ***********************************************************/
 171
 172 PPOPUP_WINDOW
 173 CreatePopupWindow(PCONSRV_CONSOLE Console,
 174                   PTEXTMODE_SCREEN_BUFFER Buffer,
 175                   SHORT xLeft,
 176                   SHORT yTop,
 177                   SHORT Width,
 178                   SHORT Height)
 179 {
 180     PPOPUP_WINDOW Popup;
 181     SMALL_RECT Region;
 182
 183     ASSERT((PCONSOLE)Console == Buffer->Header.Console);
 184
 185     /* Create the popup window */
 186     Popup = ConsoleAllocHeap(HEAP_ZERO_MEMORY, sizeof(*Popup));
 187     if (Popup == NULL) return NULL;
 188
 189     Popup->ScreenBuffer = Buffer;
 190     Popup->Origin.X = xLeft;
 191     Popup->Origin.Y = yTop;
 192     Popup->Size.X = Width;
 193     Popup->Size.Y = Height;
 194
 195     /* Save old contents */
 196     Popup->OldContents = ConsoleAllocHeap(HEAP_ZERO_MEMORY,
 197                                           Popup->Size.X * Popup->Size.Y *
 198                                             sizeof(*Popup->OldContents));
 199     if (Popup->OldContents == NULL)
 200     {
 201         ConsoleFreeHeap(Popup);
 202         return NULL;
 203     }
 204     Region.Left   = Popup->Origin.X;
 205     Region.Top    = Popup->Origin.Y;
 206     Region.Right  = Popup->Origin.X + Popup->Size.X - 1;
 207     Region.Bottom = Popup->Origin.Y + Popup->Size.Y - 1;
 208     ConDrvReadConsoleOutput(Buffer->Header.Console,
 209                             Buffer,
 210                             TRUE,
 211                             Popup->OldContents,
 212                             &Region);
 213
 214     /* Draw it */
 215     DrawBox(Buffer,
 216             xLeft, yTop,
 217             Width, Height);
 218
 219     /* Add it into the list of popups */
 220     InsertTailList(&Console->PopupWindows, &Popup->ListEntry);
 221
 222     return Popup;
 223 }
 224
 225 VOID
 226 DestroyPopupWindow(PPOPUP_WINDOW Popup)
 227 {
 228     SMALL_RECT Region;
 229
 230     if (Popup == NULL) return;
 231
 232     /* Remove it from the list of popups */
 233     RemoveEntryList(&Popup->ListEntry);
 234
 235     /* Restore the old screen-buffer contents */
 236     Region.Left   = Popup->Origin.X;
 237     Region.Top    = Popup->Origin.Y;
 238     Region.Right  = Popup->Origin.X + Popup->Size.X - 1;
 239     Region.Bottom = Popup->Origin.Y + Popup->Size.Y - 1;
 240     ConDrvWriteConsoleOutput(Popup->ScreenBuffer->Header.Console,
 241                              Popup->ScreenBuffer,
 242                              TRUE,
 243                              Popup->OldContents,
 244                              &Region);
 245
 246     /* Free memory */
 247     ConsoleFreeHeap(Popup->OldContents);
 248     ConsoleFreeHeap(Popup);
 249 }
 250
 251 /* EOF */