vcl/os2/source/gdi/salvd.cxx

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  30
  31 #include <string.h>
  32
  33 #include <svpm.h>
  34
  35 #define _SV_SALVD_CXX
  36 #include <saldata.hxx>
  37 #include <salinst.h>
  38 #include <salgdi.h>
  39 #include <salvd.h>
  40
  41 #ifndef __H_FT2LIB
  42 #include <wingdi.h>
  43 #include <ft2lib.h>
  44 #endif
  45
  46 // =======================================================================
  47
  48 HBITMAP ImplCreateVirDevBitmap( HDC hDC, HPS hPS, long nDX, long nDY,
  49                                 USHORT nBitCount )
  50 {
  51     if( !nBitCount )
  52     {
  53         LONG nDevBitCount;
  54         DevQueryCaps( hDC, CAPS_COLOR_BITCOUNT, 1, &nDevBitCount );
  55         nBitCount = nDevBitCount;
  56     }
  57
  58     LONG nPlanes;
  59     DevQueryCaps( hDC, CAPS_COLOR_PLANES, 1, &nPlanes );
  60
  61     // entsprechende Bitmap zum OutputDevice erzeugen
  62     HBITMAP hBitmap;
  63     BITMAPINFOHEADER2 aBitmapInfo;
  64     memset( &aBitmapInfo, 0, sizeof( BITMAPINFOHEADER2 ) );
  65     aBitmapInfo.cbFix     = sizeof( BITMAPINFOHEADER2 );
  66     aBitmapInfo.cx                = nDX;
  67     aBitmapInfo.cy                = nDY;
  68     aBitmapInfo.cPlanes   = nPlanes;
  69     aBitmapInfo.cBitCount = (nBitCount < 4) ? 4 : nBitCount;
  70     hBitmap  = GpiCreateBitmap( hPS, &aBitmapInfo, 0, NULL, NULL );
  71     return hBitmap;
  72 }
  73
  74 // -----------------------------------------------------------------------
  75
  76 SalVirtualDevice* Os2SalInstance::CreateVirtualDevice( SalGraphics* pSGraphics,
  77                                                     long nDX, long nDY,
  78                                                     USHORT nBitCount,
  79                                                        const SystemGraphicsData* pData )
  80 {
  81     Os2SalGraphics* pGraphics = static_cast<Os2SalGraphics*>(pSGraphics);
  82     HAB         hAB = GetSalData()->mhAB;
  83     SIZEL       size;
  84
  85     // create device context (at this time allways display compatible)
  86     DEVOPENSTRUC aDevOpenStruc = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
  87     HDC hDC = DevOpenDC( hAB, OD_MEMORY, (PSZ)"*", 5, (PDEVOPENDATA)&aDevOpenStruc, 0 );
  88     if ( !hDC )
  89         return NULL;
  90
  91     // create presentation space
  92     size.cx = nDX;
  93     size.cy = nDY;
  94     HPS hPS = Ft2CreatePS( hAB, hDC, &size, GPIT_MICRO | GPIA_ASSOC | PU_PELS );
  95     if ( !hPS )
  96     {
  97         DevCloseDC( hDC );
  98         return NULL;
  99     }
 100
 101     // create bitmap for the virtual device
 102     HBITMAP hBmp = ImplCreateVirDevBitmap( hDC, hPS, nDX, nDY, nBitCount );
 103     if ( !hBmp )
 104     {
 105         Ft2DestroyPS( hPS );
 106         DevCloseDC( hDC );
 107         return NULL;
 108     }
 109
 110     // init data
 111     Os2SalVirtualDevice*        pVDev                           = new Os2SalVirtualDevice;
 112     Os2SalGraphics*             pVirGraphics            = new Os2SalGraphics;
 113
 114     pVirGraphics->mhDC          = hDC;
 115     pVirGraphics->mhPS          = hPS;
 116     pVirGraphics->mhWnd         = 0;
 117     pVirGraphics->mnHeight      = nDY;
 118     pVirGraphics->mbPrinter     = FALSE;
 119     pVirGraphics->mbVirDev      = TRUE;
 120     pVirGraphics->mbWindow      = FALSE;
 121     pVirGraphics->mbScreen      = pGraphics->mbScreen;
 122     ImplSalInitGraphics( pVirGraphics );
 123
 124     pVDev->mhDC                         = hDC;
 125     pVDev->mhPS                         = hPS;
 126     pVDev->mhBmp                        = hBmp;
 127     pVDev->mhDefBmp                     = Ft2SetBitmap( hPS, hBmp );
 128     pVDev->mpGraphics           = pVirGraphics;
 129     pVDev->mnBitCount           = nBitCount;
 130     pVDev->mbGraphics           = FALSE;
 131     return pVDev;
 132 }
 133
 134 // -----------------------------------------------------------------------
 135
 136 void Os2SalInstance::DestroyVirtualDevice( SalVirtualDevice* pDevice )
 137 {
 138     delete pDevice;
 139 }
 140
 141 // =======================================================================
 142
 143 Os2SalVirtualDevice::Os2SalVirtualDevice()
 144 {
 145 }
 146
 147 // -----------------------------------------------------------------------
 148
 149 Os2SalVirtualDevice::~Os2SalVirtualDevice()
 150 {
 151     ImplSalDeInitGraphics( mpGraphics );
 152
 153     Ft2SetBitmap( mpGraphics->mhPS, mhDefBmp );
 154     GpiDeleteBitmap( mhBmp );
 155     Ft2DestroyPS( mpGraphics->mhPS );
 156     DevCloseDC( mpGraphics->mhDC );
 157     delete mpGraphics;
 158 }
 159
 160 // -----------------------------------------------------------------------
 161
 162 SalGraphics* Os2SalVirtualDevice::GetGraphics()
 163 {
 164     if ( mbGraphics )
 165         return NULL;
 166
 167     if ( mpGraphics )
 168         mbGraphics = TRUE;
 169
 170     return mpGraphics;
 171 }
 172
 173 // -----------------------------------------------------------------------
 174
 175 void Os2SalVirtualDevice::ReleaseGraphics( SalGraphics* )
 176 {
 177     mbGraphics = FALSE;
 178 }
 179
 180 // -----------------------------------------------------------------------
 181
 182 BOOL Os2SalVirtualDevice::SetSize( long nDX, long nDY )
 183 {
 184     HBITMAP hNewBmp = ImplCreateVirDevBitmap( mhDC,
 185                                               mhPS, nDX, nDY,
 186                                               mnBitCount );
 187     if ( hNewBmp )
 188     {
 189         Ft2SetBitmap( mhPS, hNewBmp );
 190         GpiDeleteBitmap( mhBmp );
 191         mhBmp = hNewBmp;
 192         mpGraphics->mnHeight  = nDY;
 193         return TRUE;
 194     }
 195     else
 196         return FALSE;
 197 }
 198
 199 void Os2SalVirtualDevice::GetSize( long& rWidth, long& rHeight )
 200 {
 201     DevQueryCaps( mpGraphics->mhDC, CAPS_WIDTH, CAPS_WIDTH, (LONG*)rWidth );
 202     DevQueryCaps( mpGraphics->mhDC, CAPS_HEIGHT, CAPS_HEIGHT, (LONG*)rHeight );
 203 }