mirror of
https://github.com/classilla/tenfourfox.git
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901 lines
29 KiB
C++
901 lines
29 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "nsSimplePageSequenceFrame.h"
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#include "nsCOMPtr.h"
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#include "nsDeviceContext.h"
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#include "nsPresContext.h"
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#include "gfxContext.h"
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#include "nsRenderingContext.h"
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#include "nsGkAtoms.h"
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#include "nsIPresShell.h"
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#include "nsIPrintSettings.h"
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#include "nsPageFrame.h"
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#include "nsSubDocumentFrame.h"
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#include "nsRegion.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsContentUtils.h"
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#include "nsDisplayList.h"
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#include "nsHTMLCanvasFrame.h"
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#include "mozilla/dom/HTMLCanvasElement.h"
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#include "nsICanvasRenderingContextInternal.h"
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#include "nsIDateTimeFormat.h"
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#include "nsServiceManagerUtils.h"
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#include <algorithm>
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// DateTime Includes
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#include "nsDateTimeFormatCID.h"
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#define OFFSET_NOT_SET -1
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// Print Options
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#include "nsIPrintOptions.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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static const char sPrintOptionsContractID[] = "@mozilla.org/gfx/printsettings-service;1";
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//
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#include "mozilla/Logging.h"
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mozilla::LazyLogModule gLayoutPrintingLog("printing-layout");
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#define PR_PL(_p1) MOZ_LOG(gLayoutPrintingLog, mozilla::LogLevel::Debug, _p1)
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nsSimplePageSequenceFrame*
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NS_NewSimplePageSequenceFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsSimplePageSequenceFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsSimplePageSequenceFrame)
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nsSimplePageSequenceFrame::nsSimplePageSequenceFrame(nsStyleContext* aContext) :
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nsContainerFrame(aContext),
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mTotalPages(-1),
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mSelectionHeight(-1),
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mYSelOffset(0),
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mCalledBeginPage(false),
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mCurrentCanvasListSetup(false)
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{
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nscoord halfInch = PresContext()->CSSTwipsToAppUnits(NS_INCHES_TO_TWIPS(0.5));
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mMargin.SizeTo(halfInch, halfInch, halfInch, halfInch);
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// XXX Unsafe to assume successful allocation
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mPageData = new nsSharedPageData();
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mPageData->mHeadFootFont =
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*PresContext()->GetDefaultFont(kGenericFont_serif,
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aContext->StyleFont()->mLanguage);
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mPageData->mHeadFootFont.size = nsPresContext::CSSPointsToAppUnits(10);
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nsresult rv;
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mPageData->mPrintOptions = do_GetService(sPrintOptionsContractID, &rv);
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// Doing this here so we only have to go get these formats once
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SetPageNumberFormat("pagenumber", "%1$d", true);
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SetPageNumberFormat("pageofpages", "%1$d of %2$d", false);
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}
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nsSimplePageSequenceFrame::~nsSimplePageSequenceFrame()
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{
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delete mPageData;
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ResetPrintCanvasList();
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}
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NS_QUERYFRAME_HEAD(nsSimplePageSequenceFrame)
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NS_QUERYFRAME_ENTRY(nsIPageSequenceFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
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//----------------------------------------------------------------------
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void
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nsSimplePageSequenceFrame::SetDesiredSize(nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nscoord aWidth,
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nscoord aHeight)
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{
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// Aim to fill the whole size of the document, not only so we
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// can act as a background in print preview but also handle overflow
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// in child page frames correctly.
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// Use availableWidth so we don't cause a needless horizontal scrollbar.
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aDesiredSize.Width() = std::max(aReflowState.AvailableWidth(),
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nscoord(aWidth * PresContext()->GetPrintPreviewScale()));
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aDesiredSize.Height() = std::max(aReflowState.ComputedHeight(),
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nscoord(aHeight * PresContext()->GetPrintPreviewScale()));
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}
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// Helper function to compute the offset needed to center a child
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// page-frame's margin-box inside our content-box.
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nscoord
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nsSimplePageSequenceFrame::ComputeCenteringMargin(
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nscoord aContainerContentBoxWidth,
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nscoord aChildPaddingBoxWidth,
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const nsMargin& aChildPhysicalMargin)
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{
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// We'll be centering our child's margin-box, so get the size of that:
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nscoord childMarginBoxWidth =
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aChildPaddingBoxWidth + aChildPhysicalMargin.LeftRight();
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// When rendered, our child's rect will actually be scaled up by the
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// print-preview scale factor, via ComputePageSequenceTransform().
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// We really want to center *that scaled-up rendering* inside of
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// aContainerContentBoxWidth. So, we scale up its margin-box here...
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auto ppScale = PresContext()->GetPrintPreviewScale();
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nscoord scaledChildMarginBoxWidth =
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NSToCoordRound(childMarginBoxWidth * ppScale);
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// ...and see we how much space is left over, when we subtract that scaled-up
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// size from the container width:
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nscoord scaledExtraSpace =
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aContainerContentBoxWidth - scaledChildMarginBoxWidth;
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if (scaledExtraSpace <= 0) {
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// (Don't bother centering if there's zero/negative space.)
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return 0;
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}
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// To center the child, we want to give it an additional left-margin of half
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// of the extra space. And then, we have to scale that space back down, so
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// that it'll produce the correct scaled-up amount when we render (because
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// rendering will scale it back up):
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return NSToCoordRound(scaledExtraSpace * 0.5 / ppScale);
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}
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void
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nsSimplePageSequenceFrame::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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MarkInReflow();
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NS_PRECONDITION(aPresContext->IsRootPaginatedDocument(),
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"A Page Sequence is only for real pages");
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DO_GLOBAL_REFLOW_COUNT("nsSimplePageSequenceFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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NS_FRAME_TRACE_REFLOW_IN("nsSimplePageSequenceFrame::Reflow");
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aStatus = NS_FRAME_COMPLETE; // we're always complete
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// Don't do incremental reflow until we've taught tables how to do
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// it right in paginated mode.
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if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
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// Return our desired size
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SetDesiredSize(aDesiredSize, aReflowState, mSize.width, mSize.height);
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aDesiredSize.SetOverflowAreasToDesiredBounds();
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FinishAndStoreOverflow(&aDesiredSize);
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if (GetRect().Width() != aDesiredSize.Width()) {
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// Our width is changing; we need to re-center our children (our pages).
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for (nsFrameList::Enumerator e(mFrames); !e.AtEnd(); e.Next()) {
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nsIFrame* child = e.get();
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nsMargin pageCSSMargin = child->GetUsedMargin();
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nscoord centeringMargin =
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ComputeCenteringMargin(aReflowState.ComputedWidth(),
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child->GetRect().width,
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pageCSSMargin);
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nscoord newX = pageCSSMargin.left + centeringMargin;
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// Adjust the child's x-position:
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child->MovePositionBy(nsPoint(newX - child->GetNormalPosition().x, 0));
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}
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}
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return;
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}
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// See if we can get a Print Settings from the Context
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if (!mPageData->mPrintSettings &&
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aPresContext->Medium() == nsGkAtoms::print) {
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mPageData->mPrintSettings = aPresContext->GetPrintSettings();
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}
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// now get out margins & edges
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if (mPageData->mPrintSettings) {
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nsIntMargin unwriteableTwips;
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mPageData->mPrintSettings->GetUnwriteableMarginInTwips(unwriteableTwips);
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NS_ASSERTION(unwriteableTwips.left >= 0 && unwriteableTwips.top >= 0 &&
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unwriteableTwips.right >= 0 && unwriteableTwips.bottom >= 0,
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"Unwriteable twips should be non-negative");
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nsIntMargin marginTwips;
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mPageData->mPrintSettings->GetMarginInTwips(marginTwips);
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mMargin = aPresContext->CSSTwipsToAppUnits(marginTwips + unwriteableTwips);
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int16_t printType;
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mPageData->mPrintSettings->GetPrintRange(&printType);
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mPrintRangeType = printType;
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nsIntMargin edgeTwips;
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mPageData->mPrintSettings->GetEdgeInTwips(edgeTwips);
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// sanity check the values. three inches are sometimes needed
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int32_t inchInTwips = NS_INCHES_TO_INT_TWIPS(3.0);
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edgeTwips.top = clamped(edgeTwips.top, 0, inchInTwips);
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edgeTwips.bottom = clamped(edgeTwips.bottom, 0, inchInTwips);
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edgeTwips.left = clamped(edgeTwips.left, 0, inchInTwips);
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edgeTwips.right = clamped(edgeTwips.right, 0, inchInTwips);
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mPageData->mEdgePaperMargin =
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aPresContext->CSSTwipsToAppUnits(edgeTwips + unwriteableTwips);
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}
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// *** Special Override ***
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// If this is a sub-sdoc (meaning it doesn't take the whole page)
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// and if this Document is in the upper left hand corner
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// we need to suppress the top margin or it will reflow too small
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nsSize pageSize = aPresContext->GetPageSize();
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mPageData->mReflowSize = pageSize;
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// If we're printing a selection, we need to reflow with
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// unconstrained height, to make sure we'll get to the selection
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// even if it's beyond the first page of content.
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if (nsIPrintSettings::kRangeSelection == mPrintRangeType) {
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mPageData->mReflowSize.height = NS_UNCONSTRAINEDSIZE;
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}
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mPageData->mReflowMargin = mMargin;
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// We use the CSS "margin" property on the -moz-page pseudoelement
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// to determine the space between each page in print preview.
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// Keep a running y-offset for each page.
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nscoord y = 0;
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nscoord maxXMost = 0;
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// Tile the pages vertically
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nsHTMLReflowMetrics kidSize(aReflowState);
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for (nsFrameList::Enumerator e(mFrames); !e.AtEnd(); e.Next()) {
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nsIFrame* kidFrame = e.get();
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// Set the shared data into the page frame before reflow
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nsPageFrame * pf = static_cast<nsPageFrame*>(kidFrame);
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pf->SetSharedPageData(mPageData);
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// Reflow the page
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nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
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LogicalSize(kidFrame->GetWritingMode(),
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pageSize));
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nsReflowStatus status;
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kidReflowState.SetComputedWidth(kidReflowState.AvailableWidth());
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//kidReflowState.SetComputedHeight(kidReflowState.AvailableHeight());
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PR_PL(("AV W: %d H: %d\n", kidReflowState.AvailableWidth(), kidReflowState.AvailableHeight()));
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nsMargin pageCSSMargin = kidReflowState.ComputedPhysicalMargin();
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y += pageCSSMargin.top;
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nscoord x = pageCSSMargin.left;
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// Place and size the page.
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ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, x, y, 0, status);
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// If the page is narrower than our width, then center it horizontally:
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x += ComputeCenteringMargin(aReflowState.ComputedWidth(),
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kidSize.Width(), pageCSSMargin);
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FinishReflowChild(kidFrame, aPresContext, kidSize, nullptr, x, y, 0);
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y += kidSize.Height();
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y += pageCSSMargin.bottom;
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maxXMost = std::max(maxXMost, x + kidSize.Width() + pageCSSMargin.right);
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// Is the page complete?
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nsIFrame* kidNextInFlow = kidFrame->GetNextInFlow();
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if (NS_FRAME_IS_FULLY_COMPLETE(status)) {
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NS_ASSERTION(!kidNextInFlow, "bad child flow list");
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} else if (!kidNextInFlow) {
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// The page isn't complete and it doesn't have a next-in-flow, so
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// create a continuing page.
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nsIFrame* continuingPage = aPresContext->PresShell()->FrameConstructor()->
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CreateContinuingFrame(aPresContext, kidFrame, this);
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// Add it to our child list
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mFrames.InsertFrame(nullptr, kidFrame, continuingPage);
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}
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}
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// Get Total Page Count
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// XXXdholbert technically we could calculate this in the loop above,
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// instead of needing a separate walk.
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int32_t pageTot = mFrames.GetLength();
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// Set Page Number Info
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int32_t pageNum = 1;
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for (nsFrameList::Enumerator e(mFrames); !e.AtEnd(); e.Next()) {
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MOZ_ASSERT(e.get()->GetType() == nsGkAtoms::pageFrame,
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"only expecting nsPageFrame children. Other children will make "
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"this static_cast bogus & probably violate other assumptions");
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nsPageFrame* pf = static_cast<nsPageFrame*>(e.get());
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pf->SetPageNumInfo(pageNum, pageTot);
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pageNum++;
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}
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// Create current Date/Time String
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if (!mDateFormatter) {
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mDateFormatter = do_CreateInstance(NS_DATETIMEFORMAT_CONTRACTID);
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}
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if (!mDateFormatter) {
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return;
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}
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nsAutoString formattedDateString;
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time_t ltime;
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time( <ime );
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if (NS_SUCCEEDED(mDateFormatter->FormatTime(nullptr /* nsILocale* locale */,
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kDateFormatShort,
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kTimeFormatNoSeconds,
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ltime,
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formattedDateString))) {
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SetDateTimeStr(formattedDateString);
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}
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// Return our desired size
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// Adjust the reflow size by PrintPreviewScale so the scrollbars end up the
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// correct size
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SetDesiredSize(aDesiredSize, aReflowState, maxXMost, y);
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aDesiredSize.SetOverflowAreasToDesiredBounds();
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FinishAndStoreOverflow(&aDesiredSize);
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// cache the size so we can set the desired size
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// for the other reflows that happen
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mSize.width = maxXMost;
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mSize.height = y;
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NS_FRAME_TRACE_REFLOW_OUT("nsSimplePageSequeceFrame::Reflow", aStatus);
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
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}
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//----------------------------------------------------------------------
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#ifdef DEBUG_FRAME_DUMP
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nsresult
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nsSimplePageSequenceFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("SimplePageSequence"), aResult);
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}
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#endif
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//====================================================================
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//== Asynch Printing
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//====================================================================
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::GetCurrentPageNum(int32_t* aPageNum)
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{
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NS_ENSURE_ARG_POINTER(aPageNum);
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*aPageNum = mPageNum;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::GetNumPages(int32_t* aNumPages)
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{
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NS_ENSURE_ARG_POINTER(aNumPages);
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*aNumPages = mTotalPages;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::IsDoingPrintRange(bool* aDoing)
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{
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NS_ENSURE_ARG_POINTER(aDoing);
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*aDoing = mDoingPageRange;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::GetPrintRange(int32_t* aFromPage, int32_t* aToPage)
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{
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NS_ENSURE_ARG_POINTER(aFromPage);
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NS_ENSURE_ARG_POINTER(aToPage);
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*aFromPage = mFromPageNum;
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*aToPage = mToPageNum;
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return NS_OK;
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}
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// Helper Function
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void
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nsSimplePageSequenceFrame::SetPageNumberFormat(const char* aPropName, const char* aDefPropVal, bool aPageNumOnly)
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{
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// Doing this here so we only have to go get these formats once
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nsXPIDLString pageNumberFormat;
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// Now go get the Localized Page Formating String
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nsresult rv =
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nsContentUtils::GetLocalizedString(nsContentUtils::ePRINTING_PROPERTIES,
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aPropName, pageNumberFormat);
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if (NS_FAILED(rv)) { // back stop formatting
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pageNumberFormat.AssignASCII(aDefPropVal);
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}
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SetPageNumberFormat(pageNumberFormat, aPageNumOnly);
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}
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::StartPrint(nsPresContext* aPresContext,
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nsIPrintSettings* aPrintSettings,
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const nsAString& aDocTitle,
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const nsAString& aDocURL)
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{
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NS_ENSURE_ARG_POINTER(aPresContext);
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NS_ENSURE_ARG_POINTER(aPrintSettings);
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if (!mPageData->mPrintSettings) {
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mPageData->mPrintSettings = aPrintSettings;
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}
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if (!aDocTitle.IsEmpty()) {
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mPageData->mDocTitle = aDocTitle;
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}
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if (!aDocURL.IsEmpty()) {
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mPageData->mDocURL = aDocURL;
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}
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aPrintSettings->GetStartPageRange(&mFromPageNum);
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aPrintSettings->GetEndPageRange(&mToPageNum);
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aPrintSettings->GetPageRanges(mPageRanges);
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mDoingPageRange = nsIPrintSettings::kRangeSpecifiedPageRange == mPrintRangeType ||
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nsIPrintSettings::kRangeSelection == mPrintRangeType;
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// If printing a range of pages make sure at least the starting page
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// number is valid
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int32_t totalPages = mFrames.GetLength();
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if (mDoingPageRange) {
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if (mFromPageNum > totalPages) {
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return NS_ERROR_INVALID_ARG;
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}
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}
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// Begin printing of the document
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nsresult rv = NS_OK;
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// Determine if we are rendering only the selection
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aPresContext->SetIsRenderingOnlySelection(nsIPrintSettings::kRangeSelection == mPrintRangeType);
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if (mDoingPageRange) {
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// XXX because of the hack for making the selection all print on one page
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// we must make sure that the page is sized correctly before printing.
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nscoord height = aPresContext->GetPageSize().height;
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int32_t pageNum = 1;
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nscoord y = 0;//mMargin.top;
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for (nsFrameList::Enumerator e(mFrames); !e.AtEnd(); e.Next()) {
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nsIFrame* page = e.get();
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if (pageNum >= mFromPageNum && pageNum <= mToPageNum) {
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nsRect rect = page->GetRect();
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rect.y = y;
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rect.height = height;
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page->SetRect(rect);
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y += rect.height + mMargin.top + mMargin.bottom;
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}
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pageNum++;
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}
|
|
|
|
// adjust total number of pages
|
|
if (nsIPrintSettings::kRangeSelection != mPrintRangeType) {
|
|
totalPages = pageNum - 1;
|
|
}
|
|
}
|
|
|
|
mPageNum = 1;
|
|
|
|
if (mTotalPages == -1) {
|
|
mTotalPages = totalPages;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
GetPrintCanvasElementsInFrame(nsIFrame* aFrame, nsTArray<RefPtr<HTMLCanvasElement> >* aArr)
|
|
{
|
|
if (!aFrame) {
|
|
return;
|
|
}
|
|
for (nsIFrame::ChildListIterator childLists(aFrame);
|
|
!childLists.IsDone(); childLists.Next()) {
|
|
|
|
nsFrameList children = childLists.CurrentList();
|
|
for (nsFrameList::Enumerator e(children); !e.AtEnd(); e.Next()) {
|
|
nsIFrame* child = e.get();
|
|
|
|
// Check if child is a nsHTMLCanvasFrame.
|
|
nsHTMLCanvasFrame* canvasFrame = do_QueryFrame(child);
|
|
|
|
// If there is a canvasFrame, try to get actual canvas element.
|
|
if (canvasFrame) {
|
|
HTMLCanvasElement* canvas =
|
|
HTMLCanvasElement::FromContentOrNull(canvasFrame->GetContent());
|
|
if (canvas && canvas->GetMozPrintCallback()) {
|
|
aArr->AppendElement(canvas);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!child->GetFirstPrincipalChild()) {
|
|
nsSubDocumentFrame* subdocumentFrame = do_QueryFrame(child);
|
|
if (subdocumentFrame) {
|
|
// Descend into the subdocument
|
|
nsIFrame* root = subdocumentFrame->GetSubdocumentRootFrame();
|
|
child = root;
|
|
}
|
|
}
|
|
// The current child is not a nsHTMLCanvasFrame OR it is but there is
|
|
// no HTMLCanvasElement on it. Check if children of `child` might
|
|
// contain a HTMLCanvasElement.
|
|
GetPrintCanvasElementsInFrame(child, aArr);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSimplePageSequenceFrame::DetermineWhetherToPrintPage()
|
|
{
|
|
// See whether we should print this page
|
|
mPrintThisPage = true;
|
|
bool printEvenPages, printOddPages;
|
|
mPageData->mPrintSettings->GetPrintOptions(nsIPrintSettings::kPrintEvenPages, &printEvenPages);
|
|
mPageData->mPrintSettings->GetPrintOptions(nsIPrintSettings::kPrintOddPages, &printOddPages);
|
|
|
|
// If printing a range of pages check whether the page number is in the
|
|
// range of pages to print
|
|
if (mDoingPageRange) {
|
|
if (mPageNum < mFromPageNum) {
|
|
mPrintThisPage = false;
|
|
} else if (mPageNum > mToPageNum) {
|
|
mPageNum++;
|
|
mPrintThisPage = false;
|
|
return;
|
|
} else {
|
|
int32_t length = mPageRanges.Length();
|
|
|
|
// Page ranges are pairs (start, end)
|
|
if (length && (length % 2 == 0)) {
|
|
mPrintThisPage = false;
|
|
|
|
int32_t i;
|
|
for (i = 0; i < length; i += 2) {
|
|
if (mPageRanges[i] <= mPageNum && mPageNum <= mPageRanges[i+1]) {
|
|
mPrintThisPage = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check for printing of odd and even pages
|
|
if (mPageNum & 0x1) {
|
|
if (!printOddPages) {
|
|
mPrintThisPage = false; // don't print odd numbered page
|
|
}
|
|
} else {
|
|
if (!printEvenPages) {
|
|
mPrintThisPage = false; // don't print even numbered page
|
|
}
|
|
}
|
|
|
|
if (nsIPrintSettings::kRangeSelection == mPrintRangeType) {
|
|
mPrintThisPage = true;
|
|
}
|
|
}
|
|
|
|
nsIFrame*
|
|
nsSimplePageSequenceFrame::GetCurrentPageFrame()
|
|
{
|
|
int32_t i = 1;
|
|
for (nsFrameList::Enumerator childFrames(mFrames); !childFrames.AtEnd();
|
|
childFrames.Next()) {
|
|
if (i == mPageNum) {
|
|
return childFrames.get();
|
|
}
|
|
++i;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::PrePrintNextPage(nsITimerCallback* aCallback, bool* aDone)
|
|
{
|
|
nsIFrame* currentPage = GetCurrentPageFrame();
|
|
if (!currentPage) {
|
|
*aDone = true;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
DetermineWhetherToPrintPage();
|
|
// Nothing to do if the current page doesn't get printed OR rendering to
|
|
// preview. For preview, the `CallPrintCallback` is called from within the
|
|
// HTMLCanvasElement::HandlePrintCallback.
|
|
if (!mPrintThisPage || !PresContext()->IsRootPaginatedDocument()) {
|
|
*aDone = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
// If the canvasList is null, then generate it and start the render
|
|
// process for all the canvas.
|
|
if (!mCurrentCanvasListSetup) {
|
|
mCurrentCanvasListSetup = true;
|
|
GetPrintCanvasElementsInFrame(currentPage, &mCurrentCanvasList);
|
|
|
|
if (mCurrentCanvasList.Length() != 0) {
|
|
nsresult rv = NS_OK;
|
|
|
|
// Begin printing of the document
|
|
nsDeviceContext *dc = PresContext()->DeviceContext();
|
|
PR_PL(("\n"));
|
|
PR_PL(("***************** BeginPage *****************\n"));
|
|
rv = dc->BeginPage();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mCalledBeginPage = true;
|
|
|
|
RefPtr<gfxContext> renderingContext = dc->CreateRenderingContext();
|
|
NS_ENSURE_TRUE(renderingContext, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
RefPtr<gfxASurface> renderingSurface =
|
|
renderingContext->CurrentSurface();
|
|
NS_ENSURE_TRUE(renderingSurface, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
for (int32_t i = mCurrentCanvasList.Length() - 1; i >= 0 ; i--) {
|
|
HTMLCanvasElement* canvas = mCurrentCanvasList[i];
|
|
nsIntSize size = canvas->GetSize();
|
|
|
|
RefPtr<gfxASurface> printSurface = renderingSurface->
|
|
CreateSimilarSurface(
|
|
gfxContentType::COLOR_ALPHA,
|
|
size
|
|
);
|
|
|
|
if (!printSurface) {
|
|
continue;
|
|
}
|
|
|
|
nsICanvasRenderingContextInternal* ctx = canvas->GetContextAtIndex(0);
|
|
|
|
if (!ctx) {
|
|
continue;
|
|
}
|
|
|
|
// Initialize the context with the new printSurface.
|
|
ctx->InitializeWithSurface(nullptr, printSurface, size.width, size.height);
|
|
|
|
// Start the rendering process.
|
|
nsWeakFrame weakFrame = this;
|
|
canvas->DispatchPrintCallback(aCallback);
|
|
NS_ENSURE_STATE(weakFrame.IsAlive());
|
|
}
|
|
}
|
|
}
|
|
uint32_t doneCounter = 0;
|
|
for (int32_t i = mCurrentCanvasList.Length() - 1; i >= 0 ; i--) {
|
|
HTMLCanvasElement* canvas = mCurrentCanvasList[i];
|
|
|
|
if (canvas->IsPrintCallbackDone()) {
|
|
doneCounter++;
|
|
}
|
|
}
|
|
// If all canvas have finished rendering, return true, otherwise false.
|
|
*aDone = doneCounter == mCurrentCanvasList.Length();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::ResetPrintCanvasList()
|
|
{
|
|
for (int32_t i = mCurrentCanvasList.Length() - 1; i >= 0 ; i--) {
|
|
HTMLCanvasElement* canvas = mCurrentCanvasList[i];
|
|
canvas->ResetPrintCallback();
|
|
}
|
|
|
|
mCurrentCanvasList.Clear();
|
|
mCurrentCanvasListSetup = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::PrintNextPage()
|
|
{
|
|
// Print each specified page
|
|
// pageNum keeps track of the current page and what pages are printing
|
|
//
|
|
// printedPageNum keeps track of the current page number to be printed
|
|
// Note: When print al the pages or a page range the printed page shows the
|
|
// actual page number, when printing selection it prints the page number starting
|
|
// with the first page of the selection. For example if the user has a
|
|
// selection that starts on page 2 and ends on page 3, the page numbers when
|
|
// print are 1 and then two (which is different than printing a page range, where
|
|
// the page numbers would have been 2 and then 3)
|
|
|
|
nsIFrame* currentPage = GetCurrentPageFrame();
|
|
if (!currentPage) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
DetermineWhetherToPrintPage();
|
|
|
|
if (mPrintThisPage) {
|
|
// Begin printing of the document
|
|
nsDeviceContext* dc = PresContext()->DeviceContext();
|
|
|
|
// XXX This is temporary fix for printing more than one page of a selection
|
|
// This does a poor man's "dump" pagination (see Bug 89353)
|
|
// It has laid out as one long page and now we are just moving or view up/down
|
|
// one page at a time and printing the contents of what is exposed by the rect.
|
|
// currently this does not work for IFrames
|
|
// I will soon improve this to work with IFrames
|
|
bool continuePrinting = true;
|
|
nscoord width, height;
|
|
width = PresContext()->GetPageSize().width;
|
|
height = PresContext()->GetPageSize().height;
|
|
height -= mMargin.top + mMargin.bottom;
|
|
width -= mMargin.left + mMargin.right;
|
|
nscoord selectionY = height;
|
|
nsIFrame* conFrame = currentPage->GetFirstPrincipalChild();
|
|
if (mSelectionHeight >= 0) {
|
|
conFrame->SetPosition(conFrame->GetPosition() + nsPoint(0, -mYSelOffset));
|
|
nsContainerFrame::PositionChildViews(conFrame);
|
|
}
|
|
|
|
// cast the frame to be a page frame
|
|
nsPageFrame * pf = static_cast<nsPageFrame*>(currentPage);
|
|
pf->SetPageNumInfo(mPageNum, mTotalPages);
|
|
pf->SetSharedPageData(mPageData);
|
|
|
|
int32_t printedPageNum = 1;
|
|
while (continuePrinting) {
|
|
if (PresContext()->IsRootPaginatedDocument()) {
|
|
if (!mCalledBeginPage) {
|
|
PR_PL(("\n"));
|
|
PR_PL(("***************** BeginPage *****************\n"));
|
|
rv = dc->BeginPage();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
mCalledBeginPage = false;
|
|
}
|
|
}
|
|
|
|
PR_PL(("SeqFr::PrintNextPage -> %p PageNo: %d", pf, mPageNum));
|
|
|
|
// CreateRenderingContext can fail
|
|
RefPtr<gfxContext> gCtx = dc->CreateRenderingContext();
|
|
NS_ENSURE_TRUE(gCtx, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
nsRenderingContext renderingContext(gCtx);
|
|
|
|
nsRect drawingRect(nsPoint(0, 0), currentPage->GetSize());
|
|
nsRegion drawingRegion(drawingRect);
|
|
nsLayoutUtils::PaintFrame(&renderingContext, currentPage,
|
|
drawingRegion, NS_RGBA(0,0,0,0),
|
|
nsLayoutUtils::PAINT_SYNC_DECODE_IMAGES);
|
|
|
|
if (mSelectionHeight >= 0 && selectionY < mSelectionHeight) {
|
|
selectionY += height;
|
|
printedPageNum++;
|
|
pf->SetPageNumInfo(printedPageNum, mTotalPages);
|
|
conFrame->SetPosition(conFrame->GetPosition() + nsPoint(0, -height));
|
|
nsContainerFrame::PositionChildViews(conFrame);
|
|
|
|
PR_PL(("***************** End Page (PrintNextPage) *****************\n"));
|
|
rv = dc->EndPage();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
continuePrinting = false;
|
|
}
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::DoPageEnd()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (PresContext()->IsRootPaginatedDocument() && mPrintThisPage) {
|
|
PR_PL(("***************** End Page (DoPageEnd) *****************\n"));
|
|
rv = PresContext()->DeviceContext()->EndPage();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
ResetPrintCanvasList();
|
|
|
|
mPageNum++;
|
|
|
|
return rv;
|
|
}
|
|
|
|
inline gfx::Matrix4x4
|
|
ComputePageSequenceTransform(nsIFrame* aFrame, float aAppUnitsPerPixel)
|
|
{
|
|
float scale = aFrame->PresContext()->GetPrintPreviewScale();
|
|
return gfx::Matrix4x4::Scaling(scale, scale, 1);
|
|
}
|
|
|
|
void
|
|
nsSimplePageSequenceFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
DisplayBorderBackgroundOutline(aBuilder, aLists);
|
|
|
|
nsDisplayList content;
|
|
|
|
{
|
|
// Clear clip state while we construct the children of the
|
|
// nsDisplayTransform, since they'll be in a different coordinate system.
|
|
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
|
|
clipState.Clear();
|
|
|
|
nsIFrame* child = GetFirstPrincipalChild();
|
|
nsRect dirty = aDirtyRect;
|
|
dirty.ScaleInverseRoundOut(PresContext()->GetPrintPreviewScale());
|
|
|
|
while (child) {
|
|
if (child->GetVisualOverflowRectRelativeToParent().Intersects(dirty)) {
|
|
child->BuildDisplayListForStackingContext(aBuilder,
|
|
dirty - child->GetPosition(), &content);
|
|
aBuilder->ResetMarkedFramesForDisplayList();
|
|
}
|
|
child = child->GetNextSibling();
|
|
}
|
|
}
|
|
|
|
content.AppendNewToTop(new (aBuilder)
|
|
nsDisplayTransform(aBuilder, this, &content, content.GetVisibleRect(),
|
|
::ComputePageSequenceTransform));
|
|
|
|
aLists.Content()->AppendToTop(&content);
|
|
}
|
|
|
|
nsIAtom*
|
|
nsSimplePageSequenceFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::sequenceFrame;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
void
|
|
nsSimplePageSequenceFrame::SetPageNumberFormat(const nsAString& aFormatStr, bool aForPageNumOnly)
|
|
{
|
|
NS_ASSERTION(mPageData != nullptr, "mPageData string cannot be null!");
|
|
|
|
if (aForPageNumOnly) {
|
|
mPageData->mPageNumFormat = aFormatStr;
|
|
} else {
|
|
mPageData->mPageNumAndTotalsFormat = aFormatStr;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
void
|
|
nsSimplePageSequenceFrame::SetDateTimeStr(const nsAString& aDateTimeStr)
|
|
{
|
|
NS_ASSERTION(mPageData != nullptr, "mPageData string cannot be null!");
|
|
|
|
mPageData->mDateTimeStr = aDateTimeStr;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// For Shrink To Fit
|
|
//
|
|
// Return the percentage that the page needs to shrink to
|
|
//
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::GetSTFPercent(float& aSTFPercent)
|
|
{
|
|
NS_ENSURE_TRUE(mPageData, NS_ERROR_UNEXPECTED);
|
|
aSTFPercent = mPageData->mShrinkToFitRatio;
|
|
return NS_OK;
|
|
}
|