src/servers/app/drawing/BitmapBuffer.cpp

   1 // BitmapBuffer.h
   2
   3 #include "ServerBitmap.h"
   4
   5 #include "BitmapBuffer.h"
   6
   7 // TODO: It should be more or less guaranteed that this object
   8 // is not used if InitCheck() returns an error, so the checks
   9 // in all thos functions should probably be removed...
  10
  11 // constructor
  12 BitmapBuffer::BitmapBuffer(ServerBitmap* bitmap)
  13         : fBitmap(bitmap)
  14 {
  15 }
  16
  17 // destructor
  18 BitmapBuffer::~BitmapBuffer()
  19 {
  20         // We don't own the ServerBitmap
  21 }
  22
  23 // InitCheck
  24 status_t
  25 BitmapBuffer::InitCheck() const
  26 {
  27         status_t ret = B_NO_INIT;
  28         if (fBitmap)
  29                 ret = fBitmap->IsValid() ? B_OK : B_ERROR;
  30         return ret;
  31 }
  32
  33 // ColorSpace
  34 color_space
  35 BitmapBuffer::ColorSpace() const
  36 {
  37         if (InitCheck() >= B_OK)
  38                 return fBitmap->ColorSpace();
  39         return B_NO_COLOR_SPACE;
  40 }
  41
  42 // Bits
  43 void*
  44 BitmapBuffer::Bits() const
  45 {
  46         if (InitCheck() >= B_OK)
  47                 return fBitmap->Bits();
  48         return NULL;
  49 }
  50
  51 // BytesPerRow
  52 uint32
  53 BitmapBuffer::BytesPerRow() const
  54 {
  55         if (InitCheck() >= B_OK)
  56                 return fBitmap->BytesPerRow();
  57         return 0;
  58 }
  59
  60 // Width
  61 uint32
  62 BitmapBuffer::Width() const
  63 {
  64         if (InitCheck() >= B_OK)
  65                 return fBitmap->Width();
  66         return 0;
  67 }
  68
  69 // Height
  70 uint32
  71 BitmapBuffer::Height() const
  72 {
  73         if (InitCheck() >= B_OK)
  74                 return fBitmap->Height();
  75         return 0;
  76 }
  77