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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "PrintTargetWindows.h"
#include "cairo-win32.h"
#include "mozilla/gfx/HelpersCairo.h"
#include "nsCoord.h"
#include "nsString.h"
namespace mozilla {
namespace gfx {
PrintTargetWindows::PrintTargetWindows(cairo_surface_t* aCairoSurface,
const IntSize& aSize, HDC aDC)
: PrintTarget(aCairoSurface, aSize), mDC(aDC) {
// TODO: At least add basic memory reporting.
// 4 * mSize.width * mSize.height + sizeof(PrintTargetWindows) ?
}
/* static */
already_AddRefed<PrintTargetWindows> PrintTargetWindows::CreateOrNull(HDC aDC) {
// Figure out the paper size, the actual surface size will be the printable
// area which is likely smaller, but the size here is later used to create the
// draw target where the full page size is needed.
// Note: we only scale the printing using the LOGPIXELSY,
// so we use that when calculating the surface width as well as the height.
int32_t heightDPI = ::GetDeviceCaps(aDC, LOGPIXELSY);
float width =
(::GetDeviceCaps(aDC, PHYSICALWIDTH) * POINTS_PER_INCH_FLOAT) / heightDPI;
float height =
(::GetDeviceCaps(aDC, PHYSICALHEIGHT) * POINTS_PER_INCH_FLOAT) /
heightDPI;
IntSize size = IntSize::Truncate(width, height);
if (!Factory::CheckSurfaceSize(size)) {
return nullptr;
}
cairo_surface_t* surface = cairo_win32_printing_surface_create(aDC);
if (cairo_surface_status(surface)) {
return nullptr;
}
// The new object takes ownership of our surface reference.
RefPtr<PrintTargetWindows> target =
new PrintTargetWindows(surface, size, aDC);
return target.forget();
}
nsresult PrintTargetWindows::BeginPrinting(const nsAString& aTitle,
const nsAString& aPrintToFileName,
int32_t aStartPage,
int32_t aEndPage) {
const uint32_t DOC_TITLE_LENGTH = MAX_PATH - 1;
DOCINFOW docinfo;
nsString titleStr(aTitle);
if (titleStr.Length() > DOC_TITLE_LENGTH) {
titleStr.SetLength(DOC_TITLE_LENGTH - 3);
titleStr.AppendLiteral("...");
}
nsString docName(aPrintToFileName);
docinfo.cbSize = sizeof(docinfo);
docinfo.lpszDocName =
titleStr.Length() > 0 ? titleStr.get() : L"Mozilla Document";
docinfo.lpszOutput = docName.Length() > 0 ? docName.get() : nullptr;
docinfo.lpszDatatype = nullptr;
docinfo.fwType = 0;
// If the user selected Microsoft Print to PDF or XPS Document Printer, then
// the following StartDoc call will put up a dialog window to prompt the
// user to provide the name and location of the file to be saved. A zero or
// negative return value indicates failure. In that case we want to check
// whether that is because the user hit Cancel, since we want to treat that
// specially to avoid notifying the user that the print "failed" in that
// case.
// XXX We should perhaps introduce a new NS_ERROR_USER_CANCELLED errer.
int result = ::StartDocW(mDC, &docinfo);
if (result <= 0) {
if (::GetLastError() == ERROR_CANCELLED) {
return NS_ERROR_ABORT;
}
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult PrintTargetWindows::EndPrinting() {
int result = ::EndDoc(mDC);
return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
}
nsresult PrintTargetWindows::AbortPrinting() {
PrintTarget::AbortPrinting();
int result = ::AbortDoc(mDC);
return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
}
nsresult PrintTargetWindows::BeginPage() {
PrintTarget::BeginPage();
int result = ::StartPage(mDC);
return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
}
nsresult PrintTargetWindows::EndPage() {
cairo_surface_show_page(mCairoSurface);
PrintTarget::EndPage();
int result = ::EndPage(mDC);
return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
}
} // namespace gfx
} // namespace mozilla