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- // 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 <stddef.h>
- #include <stdint.h>
- #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<BITMAPINFO*>(&hdr), 0,
- reinterpret_cast<void**>(&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
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