win32ss/user/winsrv/consrv/frontends/gui/graphics.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Console Server DLL
   4  * FILE:            win32ss/user/winsrv/consrv/frontends/gui/graphics.c
   5  * PURPOSE:         GUI Terminal Front-End - Support for graphics-mode screen-buffers
   6  * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca@sfr.fr)
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include <consrv.h>
  12
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16 #include "guiterm.h"
  17
  18 /* FUNCTIONS ******************************************************************/
  19
  20 VOID
  21 GuiCopyFromGraphicsBuffer(PGRAPHICS_SCREEN_BUFFER Buffer,
  22                           PGUI_CONSOLE_DATA GuiData)
  23 {
  24     /*
  25      * This function supposes that the system clipboard was opened.
  26      */
  27
  28     HDC hMemDC;
  29     HBITMAP  hBitmapTarget, hBitmapOld;
  30     HPALETTE hPalette, hPaletteOld;
  31     ULONG selWidth, selHeight;
  32
  33     if (Buffer->BitMap == NULL) return;
  34
  35     selWidth  = GuiData->Selection.srSelection.Right - GuiData->Selection.srSelection.Left + 1;
  36     selHeight = GuiData->Selection.srSelection.Bottom - GuiData->Selection.srSelection.Top + 1;
  37     DPRINT1("Selection is (%d|%d) to (%d|%d)\n",
  38            GuiData->Selection.srSelection.Left,
  39            GuiData->Selection.srSelection.Top,
  40            GuiData->Selection.srSelection.Right,
  41            GuiData->Selection.srSelection.Bottom);
  42
  43     hMemDC = CreateCompatibleDC(GuiData->hMemDC);
  44     if (hMemDC == NULL) return;
  45
  46     /* Allocate a bitmap to be given to the clipboard, so it will not be freed here */
  47     hBitmapTarget = CreateCompatibleBitmap(GuiData->hMemDC, selWidth, selHeight);
  48     if (hBitmapTarget == NULL)
  49     {
  50         DeleteDC(hMemDC);
  51         return;
  52     }
  53
  54     /* Select the new bitmap */
  55     hBitmapOld = SelectObject(hMemDC, hBitmapTarget);
  56
  57     /* Change the palette in hMemDC if the current palette does exist */
  58     if (Buffer->PaletteHandle == NULL)
  59         hPalette = GuiData->hSysPalette;
  60     else
  61         hPalette = Buffer->PaletteHandle;
  62
  63     if (hPalette) hPaletteOld = SelectPalette(hMemDC, hPalette, FALSE);
  64
  65     /* Grab the mutex */
  66     NtWaitForSingleObject(Buffer->Mutex, FALSE, NULL);
  67
  68     // The equivalent of a SetDIBitsToDevice call...
  69     // It seems to be broken: it does not copy the tail of the bitmap.
  70     // http://wiki.allegro.cc/index.php?title=StretchDIBits
  71 #if 0
  72     StretchDIBits(hMemDC,
  73                   0, 0,
  74                   selWidth, selHeight,
  75                   GuiData->Selection.srSelection.Left,
  76                   GuiData->Selection.srSelection.Top,
  77                   selWidth, selHeight,
  78                   Buffer->BitMap,
  79                   Buffer->BitMapInfo,
  80                   Buffer->BitMapUsage,
  81                   SRCCOPY);
  82 #else
  83     SetDIBitsToDevice(hMemDC,
  84                       /* Coordinates / size of the repainted rectangle, in the framebuffer's frame */
  85                       0, 0,
  86                       selWidth, selHeight,
  87                       /* Coordinates / size of the corresponding image portion, in the graphics screen-buffer's frame */
  88                       GuiData->Selection.srSelection.Left,
  89                       GuiData->Selection.srSelection.Top,
  90                       0,
  91                       Buffer->ScreenBufferSize.Y, // == Buffer->BitMapInfo->bmiHeader.biHeight
  92                       Buffer->BitMap,
  93                       Buffer->BitMapInfo,
  94                       Buffer->BitMapUsage);
  95 #endif
  96
  97     /* Release the mutex */
  98     NtReleaseMutant(Buffer->Mutex, NULL);
  99
 100     /* Restore the palette and the old bitmap */
 101     if (hPalette) SelectPalette(hMemDC, hPaletteOld, FALSE);
 102     SelectObject(hMemDC, hBitmapOld);
 103
 104     EmptyClipboard();
 105     SetClipboardData(CF_BITMAP, hBitmapTarget);
 106
 107     DeleteDC(hMemDC);
 108 }
 109
 110 VOID
 111 GuiPasteToGraphicsBuffer(PGRAPHICS_SCREEN_BUFFER Buffer,
 112                          PGUI_CONSOLE_DATA GuiData)
 113 {
 114     /*
 115      * This function supposes that the system clipboard was opened.
 116      */
 117
 118     // PCONSOLE Console = Buffer->Header.Console;
 119
 120     UNIMPLEMENTED;
 121 }
 122
 123 VOID
 124 GuiPaintGraphicsBuffer(PGRAPHICS_SCREEN_BUFFER Buffer,
 125                        PGUI_CONSOLE_DATA GuiData,
 126                        PRECT rcView,
 127                        PRECT rcFramebuffer)
 128 {
 129     PCONSOLE Console = Buffer->Header.Console;
 130     // ASSERT(Console == GuiData->Console);
 131
 132     if (Buffer->BitMap == NULL) return;
 133
 134     if (!ConDrvValidateConsoleUnsafe(Console, CONSOLE_RUNNING, TRUE)) return;
 135
 136     rcFramebuffer->left   = Buffer->ViewOrigin.X * 1 + rcView->left;
 137     rcFramebuffer->top    = Buffer->ViewOrigin.Y * 1 + rcView->top;
 138     rcFramebuffer->right  = Buffer->ViewOrigin.X * 1 + rcView->right;
 139     rcFramebuffer->bottom = Buffer->ViewOrigin.Y * 1 + rcView->bottom;
 140
 141     /* Grab the mutex */
 142     NtWaitForSingleObject(Buffer->Mutex, FALSE, NULL);
 143
 144     /*
 145      * The seventh parameter (YSrc) of SetDIBitsToDevice always designates
 146      * the Y-coordinate of the "lower-left corner" of the image, be the DIB
 147      * in bottom-up or top-down mode.
 148      */
 149     SetDIBitsToDevice(GuiData->hMemDC,
 150                       /* Coordinates / size of the repainted rectangle, in the framebuffer's frame */
 151                       rcFramebuffer->left,
 152                       rcFramebuffer->top,
 153                       rcFramebuffer->right  - rcFramebuffer->left,
 154                       rcFramebuffer->bottom - rcFramebuffer->top,
 155                       /* Coordinates / size of the corresponding image portion, in the graphics screen-buffer's frame */
 156                       rcFramebuffer->left,
 157                       rcFramebuffer->top,
 158                       0,
 159                       Buffer->ScreenBufferSize.Y, // == Buffer->BitMapInfo->bmiHeader.biHeight
 160                       Buffer->BitMap,
 161                       Buffer->BitMapInfo,
 162                       Buffer->BitMapUsage);
 163
 164     /* Release the mutex */
 165     NtReleaseMutant(Buffer->Mutex, NULL);
 166
 167     LeaveCriticalSection(&Console->Lock);
 168 }
 169
 170 /* EOF */