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     CODE_ELEMENT Code;
  58
  59     /* Set screen attributes */
  60     coPos.X = xLeft;
  61     for (coPos.Y = yTop; coPos.Y < yTop + Height; coPos.Y++)
  62     {
  63         Code.Attribute = Buffer->PopupDefaultAttrib;
  64         ConDrvFillConsoleOutput(Buffer->Header.Console,
  65                                 Buffer,
  66                                 CODE_ATTRIBUTE,
  67                                 Code,
  68                                 Width,
  69                                 &coPos,
  70                                 &Written);
  71     }
  72
  73     /* draw upper left corner */
  74     coPos.X = xLeft;
  75     coPos.Y = yTop;
  76     Code.AsciiChar = 0xDA; // '+'
  77     ConDrvFillConsoleOutput(Buffer->Header.Console,
  78                             Buffer,
  79                             CODE_ASCII,
  80                             Code,
  81                             1,
  82                             &coPos,
  83                             &Written);
  84
  85     /* draw upper edge */
  86     coPos.X = xLeft + 1;
  87     coPos.Y = yTop;
  88     Code.AsciiChar = 0xC4; // '-'
  89     ConDrvFillConsoleOutput(Buffer->Header.Console,
  90                             Buffer,
  91                             CODE_ASCII,
  92                             Code,
  93                             Width - 2,
  94                             &coPos,
  95                             &Written);
  96
  97     /* draw upper right corner */
  98     coPos.X = xLeft + Width - 1;
  99     coPos.Y = yTop;
 100     Code.AsciiChar = 0xBF; // '+'
 101     ConDrvFillConsoleOutput(Buffer->Header.Console,
 102                             Buffer,
 103                             CODE_ASCII,
 104                             Code,
 105                             1,
 106                             &coPos,
 107                             &Written);
 108
 109     /* Draw right edge, inner space and left edge */
 110     for (coPos.Y = yTop + 1; coPos.Y < yTop + Height - 1; coPos.Y++)
 111     {
 112         coPos.X = xLeft;
 113         Code.AsciiChar = 0xB3; // '|'
 114         ConDrvFillConsoleOutput(Buffer->Header.Console,
 115                                 Buffer,
 116                                 CODE_ASCII,
 117                                 Code,
 118                                 1,
 119                                 &coPos,
 120                                 &Written);
 121
 122         coPos.X = xLeft + 1;
 123         Code.AsciiChar = ' ';
 124         ConDrvFillConsoleOutput(Buffer->Header.Console,
 125                                 Buffer,
 126                                 CODE_ASCII,
 127                                 Code,
 128                                 Width - 2,
 129                                 &coPos,
 130                                 &Written);
 131
 132         coPos.X = xLeft + Width - 1;
 133         Code.AsciiChar = 0xB3; // '|'
 134         ConDrvFillConsoleOutput(Buffer->Header.Console,
 135                                 Buffer,
 136                                 CODE_ASCII,
 137                                 Code,
 138                                 1,
 139                                 &coPos,
 140                                 &Written);
 141     }
 142
 143     /* draw lower left corner */
 144     coPos.X = xLeft;
 145     coPos.Y = yTop + Height - 1;
 146     Code.AsciiChar = 0xC0; // '+'
 147     ConDrvFillConsoleOutput(Buffer->Header.Console,
 148                             Buffer,
 149                             CODE_ASCII,
 150                             Code,
 151                             1,
 152                             &coPos,
 153                             &Written);
 154
 155     /* draw lower edge */
 156     coPos.X = xLeft + 1;
 157     coPos.Y = yTop + Height - 1;
 158     Code.AsciiChar = 0xC4; // '-'
 159     ConDrvFillConsoleOutput(Buffer->Header.Console,
 160                             Buffer,
 161                             CODE_ASCII,
 162                             Code,
 163                             Width - 2,
 164                             &coPos,
 165                             &Written);
 166
 167     /* draw lower right corner */
 168     coPos.X = xLeft + Width - 1;
 169     coPos.Y = yTop + Height - 1;
 170     Code.AsciiChar = 0xD9; // '+'
 171     ConDrvFillConsoleOutput(Buffer->Header.Console,
 172                             Buffer,
 173                             CODE_ASCII,
 174                             Code,
 175                             1,
 176                             &coPos,
 177                             &Written);
 178 }
 179
 180
 181 /* PUBLIC FUNCTIONS ***********************************************************/
 182
 183 PPOPUP_WINDOW
 184 CreatePopupWindow(
 185     IN PCONSRV_CONSOLE Console,
 186     IN PCONSOLE_SCREEN_BUFFER ScreenBuffer,
 187     IN SHORT xLeft,
 188     IN SHORT yTop,
 189     IN SHORT Width,
 190     IN SHORT Height)
 191 {
 192     PTEXTMODE_SCREEN_BUFFER Buffer;
 193     PPOPUP_WINDOW Popup;
 194     SMALL_RECT Region;
 195
 196     ASSERT((PCONSOLE)Console == ScreenBuffer->Header.Console);
 197
 198     if (GetType(ScreenBuffer) != TEXTMODE_BUFFER)
 199         return NULL;
 200
 201     Buffer = (PTEXTMODE_SCREEN_BUFFER)ScreenBuffer;
 202
 203     /* Create the popup window */
 204     Popup = ConsoleAllocHeap(HEAP_ZERO_MEMORY, sizeof(*Popup));
 205     if (Popup == NULL) return NULL;
 206
 207     Popup->ScreenBuffer = Buffer;
 208     Popup->Origin.X = xLeft;
 209     Popup->Origin.Y = yTop;
 210     Popup->Size.X = Width;
 211     Popup->Size.Y = Height;
 212
 213     /* Save old contents */
 214     Popup->OldContents = ConsoleAllocHeap(HEAP_ZERO_MEMORY,
 215                                           Popup->Size.X * Popup->Size.Y *
 216                                             sizeof(*Popup->OldContents));
 217     if (Popup->OldContents == NULL)
 218     {
 219         ConsoleFreeHeap(Popup);
 220         return NULL;
 221     }
 222     Region.Left   = Popup->Origin.X;
 223     Region.Top    = Popup->Origin.Y;
 224     Region.Right  = Popup->Origin.X + Popup->Size.X - 1;
 225     Region.Bottom = Popup->Origin.Y + Popup->Size.Y - 1;
 226     ConDrvReadConsoleOutput(Buffer->Header.Console,
 227                             Buffer,
 228                             TRUE,
 229                             Popup->OldContents,
 230                             &Region);
 231
 232     /* Draw it */
 233     DrawBox(Buffer,
 234             xLeft, yTop,
 235             Width, Height);
 236
 237     /* Add it into the list of popups */
 238     InsertTailList(&Console->PopupWindows, &Popup->ListEntry);
 239
 240     return Popup;
 241 }
 242
 243 VOID
 244 DestroyPopupWindow(
 245     IN PPOPUP_WINDOW Popup)
 246 {
 247     SMALL_RECT Region;
 248
 249     if (Popup == NULL) return;
 250
 251     /* Remove it from the list of popups */
 252     RemoveEntryList(&Popup->ListEntry);
 253
 254     /* Restore the old screen-buffer contents */
 255     Region.Left   = Popup->Origin.X;
 256     Region.Top    = Popup->Origin.Y;
 257     Region.Right  = Popup->Origin.X + Popup->Size.X - 1;
 258     Region.Bottom = Popup->Origin.Y + Popup->Size.Y - 1;
 259     ConDrvWriteConsoleOutput(Popup->ScreenBuffer->Header.Console,
 260                              Popup->ScreenBuffer,
 261                              TRUE,
 262                              Popup->OldContents,
 263                              &Region);
 264
 265     /* Free memory */
 266     ConsoleFreeHeap(Popup->OldContents);
 267     ConsoleFreeHeap(Popup);
 268 }
 269
 270 /* EOF */