src/apps/icon-o-matic/import_export/bitmap/BitmapExporter.cpp

   1 /*
   2  * Copyright 2006, Haiku. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Stephan Aßmus <superstippi@gmx.de>
   7  */
   8
   9 #include "BitmapExporter.h"
  10
  11 #include <Bitmap.h>
  12 #include <BitmapStream.h>
  13 #include <TranslatorFormats.h>
  14 #include <TranslatorRoster.h>
  15
  16 #include "Icon.h"
  17 #include "IconRenderer.h"
  18
  19 // constructor
  20 BitmapExporter::BitmapExporter(uint32 size)
  21         : Exporter(),
  22           fFormat(B_PNG_FORMAT),
  23           fSize(size)
  24 {
  25 }
  26
  27 // destructor
  28 BitmapExporter::~BitmapExporter()
  29 {
  30 }
  31
  32 // Export
  33 status_t
  34 BitmapExporter::Export(const Icon* icon, BPositionIO* stream)
  35 {
  36         if (fSize == 0)
  37                 return B_NO_INIT;
  38
  39         // render icon into bitmap with given size and transparent background
  40         uint32 bitmapFlags = 0;
  41
  42         #if __HAIKU__
  43         bitmapFlags |= B_BITMAP_NO_SERVER_LINK;
  44         #endif
  45
  46         BBitmap bitmap(BRect(0, 0, fSize - 1, fSize - 1),
  47                                    bitmapFlags, B_RGBA32);
  48
  49         status_t ret  = bitmap.InitCheck();
  50         if (ret < B_OK)
  51                 return ret;
  52
  53         IconRenderer renderer(&bitmap);
  54         renderer.SetIcon(icon);
  55         renderer.SetScale(fSize / 64.0);
  56         renderer.Render();
  57 //      renderer.Demultiply(&bitmap);
  58
  59         // save bitmap to translator
  60         BTranslatorRoster* roster = BTranslatorRoster::Default();
  61         if (!roster)
  62                 return B_ERROR;
  63
  64         BBitmapStream bitmapStream(&bitmap);
  65         ret = roster->Translate(&bitmapStream, NULL, NULL, stream, fFormat, 0);
  66
  67         BBitmap* dummy;
  68         bitmapStream.DetachBitmap(&dummy);
  69
  70         return ret;
  71 }
  72
  73 // MIMEType
  74 const char*
  75 BitmapExporter::MIMEType()
  76 {
  77         // TODO: ...
  78         return "image/png";
  79 }
  80