117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "PrintTargetWindows.h"
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#include "cairo-win32.h"
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#include "mozilla/gfx/HelpersCairo.h"
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#include "nsCoord.h"
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#include "nsString.h"
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namespace mozilla {
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namespace gfx {
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PrintTargetWindows::PrintTargetWindows(cairo_surface_t* aCairoSurface,
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const IntSize& aSize,
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HDC aDC)
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: PrintTarget(aCairoSurface, aSize)
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, mDC(aDC)
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{
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// TODO: At least add basic memory reporting.
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// 4 * mSize.width * mSize.height + sizeof(PrintTargetWindows) ?
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}
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/* static */ already_AddRefed<PrintTargetWindows>
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PrintTargetWindows::CreateOrNull(HDC aDC)
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{
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#ifdef NS_PRINTING
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// Figure out the cairo surface size - Windows we need to use the printable
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// area of the page. Note: we only scale the printing using the LOGPIXELSY,
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// so we use that when calculating the surface width as well as the height.
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int32_t heightDPI = ::GetDeviceCaps(aDC, LOGPIXELSY);
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float width =
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(::GetDeviceCaps(aDC, HORZRES) * POINTS_PER_INCH_FLOAT) / heightDPI;
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float height =
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(::GetDeviceCaps(aDC, VERTRES) * POINTS_PER_INCH_FLOAT) / heightDPI;
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IntSize size = IntSize::Truncate(width, height);
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if (!Factory::CheckSurfaceSize(size)) {
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return nullptr;
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}
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cairo_surface_t* surface = cairo_win32_printing_surface_create(aDC);
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if (cairo_surface_status(surface)) {
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return nullptr;
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}
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// The new object takes ownership of our surface reference.
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RefPtr<PrintTargetWindows> target =
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new PrintTargetWindows(surface, size, aDC);
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return target.forget();
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#else
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return nullptr;
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#endif
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}
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nsresult
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PrintTargetWindows::BeginPrinting(const nsAString& aTitle,
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const nsAString& aPrintToFileName)
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{
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const uint32_t DOC_TITLE_LENGTH = MAX_PATH - 1;
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DOCINFOW docinfo;
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nsString titleStr(aTitle);
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if (titleStr.Length() > DOC_TITLE_LENGTH) {
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titleStr.SetLength(DOC_TITLE_LENGTH - 3);
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titleStr.AppendLiteral("...");
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}
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nsString docName(aPrintToFileName);
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docinfo.cbSize = sizeof(docinfo);
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docinfo.lpszDocName = titleStr.Length() > 0 ? titleStr.get() : L"Mozilla Document";
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docinfo.lpszOutput = docName.Length() > 0 ? docName.get() : nullptr;
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docinfo.lpszDatatype = nullptr;
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docinfo.fwType = 0;
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::StartDocW(mDC, &docinfo);
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return NS_OK;
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}
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nsresult
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PrintTargetWindows::EndPrinting()
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{
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int result = ::EndDoc(mDC);
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return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
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}
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nsresult
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PrintTargetWindows::AbortPrinting()
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{
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int result = ::AbortDoc(mDC);
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return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
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}
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nsresult
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PrintTargetWindows::BeginPage()
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{
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int result = ::StartPage(mDC);
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return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
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}
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nsresult
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PrintTargetWindows::EndPage()
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{
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cairo_surface_show_page(mCairoSurface);
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int result = ::EndPage(mDC);
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return (result <= 0) ? NS_ERROR_FAILURE : NS_OK;
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}
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} // namespace gfx
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} // namespace mozilla
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