// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "printing/image.h" #include #include #include "base/win/scoped_gdi_object.h" #include "base/win/scoped_hdc.h" #include "base/win/scoped_select_object.h" #include "printing/metafile.h" #include "skia/ext/skia_utils_win.h" #include "ui/gfx/gdi_util.h" // EMF support #include "ui/gfx/geometry/rect.h" namespace printing { bool Image::LoadMetafile(const Metafile& metafile) { gfx::Rect rect(metafile.GetPageBounds(1)); // Create a temporary HDC and bitmap to retrieve the rendered data. base::win::ScopedCreateDC hdc(::CreateCompatibleDC(NULL)); BITMAPV4HEADER hdr; DCHECK_EQ(rect.x(), 0); DCHECK_EQ(rect.y(), 0); DCHECK_GE(rect.width(), 0); // Metafile could be empty. DCHECK_GE(rect.height(), 0); if (rect.width() < 1 || rect.height() < 1) return false; size_ = rect.size(); // The data in this `bitmap` will be tightly-packed 32-bit ARGB data. gfx::CreateBitmapV4HeaderForARGB888(rect.width(), rect.height(), &hdr); unsigned char* bits = NULL; base::win::ScopedBitmap bitmap( ::CreateDIBSection(hdc.Get(), reinterpret_cast(&hdr), 0, reinterpret_cast(&bits), NULL, 0)); DCHECK(bitmap.is_valid()); base::win::ScopedSelectObject select_object(hdc.Get(), bitmap.get()); skia::InitializeDC(hdc.Get()); bool success = metafile.Playback(hdc.Get(), NULL); row_length_ = size_.width() * sizeof(uint32_t); size_t bytes = row_length_ * size_.height(); DCHECK(bytes); data_.assign(bits, bits + bytes); return success; } } // namespace printing