printing/image_mac.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "printing/image.h"
   6
   7 #include <ApplicationServices/ApplicationServices.h>
   8 #include <stddef.h>
   9 #include <stdint.h>
  10
  11 #include "base/mac/scoped_cftyperef.h"
  12 #include "printing/metafile.h"
  13 #include "ui/gfx/geometry/rect.h"
  14
  15 namespace printing {
  16
  17 bool Image::LoadMetafile(const Metafile& metafile) {
  18   // Load only the first page of |metafile|, just like Windows.
  19   const unsigned int page_number = 1;
  20   gfx::Rect rect(metafile.GetPageBounds(page_number));
  21   if (rect.width() < 1 || rect.height() < 1)
  22     return false;
  23
  24   size_ = rect.size();
  25   row_length_ = size_.width() * sizeof(uint32_t);
  26   size_t bytes = row_length_ * size_.height();
  27   DCHECK(bytes);
  28
  29   data_.resize(bytes);
  30   base::ScopedCFTypeRef<CGColorSpaceRef> color_space(
  31       CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB));
  32   base::ScopedCFTypeRef<CGContextRef> bitmap_context(
  33       CGBitmapContextCreate(&*data_.begin(),
  34                             size_.width(),
  35                             size_.height(),
  36                             8,
  37                             row_length_,
  38                             color_space,
  39                             kCGImageAlphaPremultipliedLast));
  40   DCHECK(bitmap_context.get());
  41
  42   struct Metafile::MacRenderPageParams params;
  43   params.shrink_to_fit = true;
  44   metafile.RenderPage(page_number, bitmap_context, rect.ToCGRect(), params);
  45   return true;
  46 }
  47
  48 }  // namespace printing