diff options
Diffstat (limited to 'chrome/renderer/print_web_view_helper_win.cc')
| -rw-r--r-- | chrome/renderer/print_web_view_helper_win.cc | 141 |
1 files changed, 6 insertions, 135 deletions
diff --git a/chrome/renderer/print_web_view_helper_win.cc b/chrome/renderer/print_web_view_helper_win.cc index d3e6576..d827678 100644 --- a/chrome/renderer/print_web_view_helper_win.cc +++ b/chrome/renderer/print_web_view_helper_win.cc @@ -32,117 +32,6 @@ using printing::kPointsPerInch; using printing::Metafile; using WebKit::WebFrame; -namespace { - -int CALLBACK EnhMetaFileProc(HDC dc, - HANDLETABLE* handle_table, - const ENHMETARECORD *record, - int num_objects, - LPARAM data) { - HDC* bitmap_dc = reinterpret_cast<HDC*>(data); - // Play this command to the bitmap DC. - PlayEnhMetaFileRecord(*bitmap_dc, handle_table, record, num_objects); - switch (record->iType) { - case EMR_ALPHABLEND: { - const EMRALPHABLEND* emr_alpha_blend = - reinterpret_cast<const EMRALPHABLEND*>(record); - XFORM bitmap_dc_transform, metafile_dc_transform; - XFORM identity = { 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f }; - // Temporarily set the world transforms of both DC's to identity. - GetWorldTransform(dc, &metafile_dc_transform); - SetWorldTransform(dc, &identity); - GetWorldTransform(*bitmap_dc, &bitmap_dc_transform); - SetWorldTransform(*bitmap_dc, &identity); - const RECTL& rect = emr_alpha_blend->rclBounds; - // Since the printer does not support alpha blend, copy the alpha - // blended region from our (software-rendered) bitmap DC to the - // metafile DC. - BitBlt(dc, - rect.left, - rect.top, - rect.right - rect.left + 1, - rect.bottom - rect.top + 1, - *bitmap_dc, - rect.left, - rect.top, - SRCCOPY); - // Restore the world transforms of both DC's. - SetWorldTransform(dc, &metafile_dc_transform); - SetWorldTransform(*bitmap_dc, &bitmap_dc_transform); - break; - } - - case EMR_CREATEBRUSHINDIRECT: - case EMR_CREATECOLORSPACE: - case EMR_CREATECOLORSPACEW: - case EMR_CREATEDIBPATTERNBRUSHPT: - case EMR_CREATEMONOBRUSH: - case EMR_CREATEPALETTE: - case EMR_CREATEPEN: - case EMR_DELETECOLORSPACE: - case EMR_DELETEOBJECT: - case EMR_EXTCREATEFONTINDIRECTW: - // Play object creation command only once. - break; - - default: - // Play this command to the metafile DC. - PlayEnhMetaFileRecord(dc, handle_table, record, num_objects); - break; - } - return 1; // Continue enumeration -} - -Metafile* FlattenTransparency(Metafile* metafile, const gfx::Size& page_size) { - // Currently, we handle alpha blend transparency for a single page. - // Therefore, expecting a metafile with page count 1. - DCHECK_EQ(1U, metafile->GetPageCount()); - - // Close the device context to retrieve the compiled metafile. - if (!metafile->FinishDocument()) - NOTREACHED(); - - // Page used alpha blend, but printer doesn't support it. Rewrite the - // metafile and flatten out the transparency. - base::win::ScopedGetDC screen_dc(NULL); - base::win::ScopedCreateDC bitmap_dc(CreateCompatibleDC(screen_dc)); - if (!bitmap_dc) - NOTREACHED() << "Bitmap DC creation failed"; - SetGraphicsMode(bitmap_dc, GM_ADVANCED); - void* bits = NULL; - BITMAPINFO hdr; - gfx::CreateBitmapHeader(page_size.width(), page_size.height(), - &hdr.bmiHeader); - base::win::ScopedBitmap hbitmap(CreateDIBSection( - bitmap_dc, &hdr, DIB_RGB_COLORS, &bits, NULL, 0)); - if (!hbitmap) - NOTREACHED() << "Raster bitmap creation for printing failed"; - - base::win::ScopedSelectObject selectBitmap(bitmap_dc, hbitmap); - RECT rect = { 0, 0, page_size.width(), page_size.height() }; - HBRUSH whiteBrush = static_cast<HBRUSH>(GetStockObject(WHITE_BRUSH)); - FillRect(bitmap_dc, &rect, whiteBrush); - - Metafile* metafile2(new printing::NativeMetafile); - metafile2->Init(); - HDC hdc = metafile2->context(); - DCHECK(hdc); - skia::InitializeDC(hdc); - - RECT metafile_bounds = metafile->GetPageBounds(1).ToRECT(); - // Process the old metafile, placing all non-AlphaBlend calls into the - // new metafile, and copying the results of all the AlphaBlend calls - // from the bitmap DC. - EnumEnhMetaFile(hdc, - metafile->emf(), - EnhMetaFileProc, - &bitmap_dc, - &metafile_bounds); - return metafile2; -} - -} // namespace - void PrintWebViewHelper::PrintPageInternal( const PrintMsg_PrintPage_Params& params, const gfx::Size& canvas_size, @@ -166,9 +55,8 @@ void PrintWebViewHelper::PrintPageInternal( gfx::Rect content_area_in_dpi; // Render page for printing. - metafile.reset(RenderPage(params.params, page_number, frame, false, - metafile.get(), &actual_shrink, &page_size_in_dpi, - &content_area_in_dpi)); + RenderPage(params.params, page_number, frame, false, metafile.get(), + &actual_shrink, &page_size_in_dpi, &content_area_in_dpi); // Close the device context to retrieve the compiled metafile. if (!metafile->FinishDocument()) @@ -210,11 +98,8 @@ bool PrintWebViewHelper::RenderPreviewPage(int page_number) { } base::TimeTicks begin_time = base::TimeTicks::Now(); - printing::Metafile* render_page_result = - RenderPage(print_params, page_number, print_preview_context_.frame(), - true, initial_render_metafile, &actual_shrink, NULL, NULL); - // In the preview flow, RenderPage will never return a new metafile. - DCHECK_EQ(render_page_result, initial_render_metafile); + RenderPage(print_params, page_number, print_preview_context_.frame(), true, + initial_render_metafile, &actual_shrink, NULL, NULL); print_preview_context_.RenderedPreviewPage( base::TimeTicks::Now() - begin_time); @@ -229,7 +114,7 @@ bool PrintWebViewHelper::RenderPreviewPage(int page_number) { return PreviewPageRendered(page_number, draft_metafile.get()); } -Metafile* PrintWebViewHelper::RenderPage( +void PrintWebViewHelper::RenderPage( const PrintMsg_Print_Params& params, int page_number, WebFrame* frame, bool is_preview, Metafile* metafile, double* actual_shrink, gfx::Size* page_size_in_dpi, gfx::Rect* content_area_in_dpi) { @@ -319,27 +204,13 @@ Metafile* PrintWebViewHelper::RenderPage( bool result = metafile->FinishPage(); DCHECK(result); - - if (!params.supports_alpha_blend) { - // PreviewMetafile (PDF) supports alpha blend, so we only hit this case - // for NativeMetafile. - DCHECK(!is_preview); - skia::PlatformDevice* platform_device = skia::GetPlatformDevice(device); - if (platform_device && platform_device->AlphaBlendUsed()) { - return FlattenTransparency(metafile, page_size); - } - } - return metafile; } bool PrintWebViewHelper::CopyMetafileDataToSharedMem( Metafile* metafile, base::SharedMemoryHandle* shared_mem_handle) { uint32 buf_size = metafile->GetDataSize(); base::SharedMemory shared_buf; - // http://msdn2.microsoft.com/en-us/library/ms535522.aspx - // Windows 2000/XP: When a page in a spooled file exceeds approximately 350 - // MB, it can fail to print and not send an error message. - if (buf_size >= 350*1024*1024) { + if (buf_size >= printing::kMetafileMaxSize) { NOTREACHED() << "Buffer too large: " << buf_size; return false; } |