зеркало из https://github.com/mozilla/gecko-dev.git
460 строки
15 KiB
C++
460 строки
15 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public
|
|
* License Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
#include "nsCOMPtr.h"
|
|
#include "nsSimplePageSequence.h"
|
|
#include "nsIPresContext.h"
|
|
#include "nsIReflowCommand.h"
|
|
#include "nsIRenderingContext.h"
|
|
#include "nsIStyleContext.h"
|
|
#include "nsHTMLAtoms.h"
|
|
#include "nsHTMLIIDs.h"
|
|
#include "nsIDeviceContext.h"
|
|
#include "nsIViewManager.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsIStyleSet.h"
|
|
|
|
nsresult
|
|
NS_NewSimplePageSequenceFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(aNewFrame, "null OUT ptr");
|
|
if (nsnull == aNewFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsSimplePageSequenceFrame* it = new (aPresShell) nsSimplePageSequenceFrame;
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aNewFrame = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsSimplePageSequenceFrame::nsSimplePageSequenceFrame()
|
|
{
|
|
}
|
|
|
|
nsresult
|
|
nsSimplePageSequenceFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
|
|
{
|
|
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
|
|
if (NULL == aInstancePtr) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if (aIID.Equals(kIPageSequenceFrameIID)) {
|
|
*aInstancePtr = (void*)(nsIPageSequenceFrame*)this;
|
|
return NS_OK;
|
|
}
|
|
return nsContainerFrame::QueryInterface(aIID, aInstancePtr);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
// XXX Hack
|
|
#define PAGE_SPACING_TWIPS 100
|
|
|
|
// Creates a continuing page frame
|
|
nsresult
|
|
nsSimplePageSequenceFrame::CreateContinuingPageFrame(nsIPresContext* aPresContext,
|
|
nsIFrame* aPageFrame,
|
|
nsIFrame** aContinuingPage)
|
|
{
|
|
nsIPresShell* presShell;
|
|
nsIStyleSet* styleSet;
|
|
nsresult rv;
|
|
|
|
// Create the continuing frame
|
|
aPresContext->GetShell(&presShell);
|
|
presShell->GetStyleSet(&styleSet);
|
|
NS_RELEASE(presShell);
|
|
rv = styleSet->CreateContinuingFrame(aPresContext, aPageFrame, this, aContinuingPage);
|
|
NS_RELEASE(styleSet);
|
|
return rv;
|
|
}
|
|
|
|
// Handles incremental reflow
|
|
nsresult
|
|
nsSimplePageSequenceFrame::IncrementalReflow(nsIPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsSize& aPageSize,
|
|
nscoord aX,
|
|
nscoord& aY)
|
|
{
|
|
// We don't expect the target of the reflow command to be the simple
|
|
// page sequence frame
|
|
#ifdef NS_DEBUG
|
|
nsIFrame* targetFrame;
|
|
aReflowState.reflowCommand->GetTarget(targetFrame);
|
|
NS_ASSERTION(targetFrame != this, "simple page sequence frame is reflow command target");
|
|
#endif
|
|
|
|
// Get the next child frame in the target chain
|
|
nsIFrame* nextFrame;
|
|
aReflowState.reflowCommand->GetNext(nextFrame);
|
|
|
|
// Compute the y-offset of this page
|
|
for (nsIFrame* f = mFrames.FirstChild(); f != nextFrame;
|
|
f->GetNextSibling(&f)) {
|
|
nsSize size;
|
|
|
|
f->GetSize(size);
|
|
aY += size.height + PAGE_SPACING_TWIPS;
|
|
}
|
|
|
|
// Reflow the page
|
|
nsHTMLReflowState kidReflowState(aPresContext, aReflowState,
|
|
nextFrame, aPageSize);
|
|
nsHTMLReflowMetrics kidSize(nsnull);
|
|
nsReflowStatus status;
|
|
|
|
// Dispatch the reflow command to our child frame. Allow it to be as high
|
|
// as it wants
|
|
ReflowChild(nextFrame, aPresContext, kidSize, kidReflowState, aX, aY, 0, status);
|
|
|
|
// Place and size the page. If the page is narrower than our max width, then
|
|
// center it horizontally
|
|
FinishReflowChild(nextFrame, aPresContext, kidSize, aX, aY, 0);
|
|
aY += kidSize.height + PAGE_SPACING_TWIPS;
|
|
|
|
// Check if the page is complete...
|
|
nsIFrame* kidNextInFlow;
|
|
nextFrame->GetNextInFlow(&kidNextInFlow);
|
|
|
|
if (NS_FRAME_IS_COMPLETE(status)) {
|
|
NS_ASSERTION(nsnull == kidNextInFlow, "bad child flow list");
|
|
} else {
|
|
nsReflowReason reflowReason = eReflowReason_Resize;
|
|
|
|
if (!kidNextInFlow) {
|
|
// The page isn't complete and it doesn't have a next-in-flow so
|
|
// create a continuing page
|
|
nsIFrame* continuingPage;
|
|
CreateContinuingPageFrame(aPresContext, nextFrame, &continuingPage);
|
|
|
|
// Add it to our child list
|
|
nextFrame->SetNextSibling(continuingPage);
|
|
reflowReason = eReflowReason_Initial;
|
|
}
|
|
|
|
// Reflow the remaining pages
|
|
// XXX Ideally we would only reflow the next page if the current page indicated
|
|
// its next-in-flow was dirty...
|
|
nsIFrame* kidFrame;
|
|
nextFrame->GetNextSibling(&kidFrame);
|
|
|
|
while (kidFrame) {
|
|
// Reflow the page
|
|
nsHTMLReflowMetrics childSize(nsnull);
|
|
nsHTMLReflowState childReflowState(aPresContext, aReflowState, kidFrame,
|
|
aPageSize, reflowReason);
|
|
|
|
// Place and size the page. If the page is narrower than our
|
|
// max width then center it horizontally
|
|
ReflowChild(kidFrame, aPresContext, childSize, childReflowState,
|
|
aX, aY, 0, status);
|
|
|
|
FinishReflowChild(kidFrame, aPresContext, childSize, aX, aY, 0);
|
|
aY += childSize.height;
|
|
|
|
// Leave a slight gap between the pages
|
|
aY += PAGE_SPACING_TWIPS;
|
|
|
|
// Is the page complete?
|
|
kidFrame->GetNextInFlow(&kidNextInFlow);
|
|
|
|
if (NS_FRAME_IS_COMPLETE(status)) {
|
|
NS_ASSERTION(nsnull == kidNextInFlow, "bad child flow list");
|
|
} else if (nsnull == kidNextInFlow) {
|
|
// The page isn't complete and it doesn't have a next-in-flow, so
|
|
// create a continuing page
|
|
nsIFrame* continuingPage;
|
|
CreateContinuingPageFrame(aPresContext, kidFrame, &continuingPage);
|
|
|
|
// Add it to our child list
|
|
kidFrame->SetNextSibling(continuingPage);
|
|
reflowReason = eReflowReason_Initial;
|
|
}
|
|
|
|
// Get the next page
|
|
kidFrame->GetNextSibling(&kidFrame);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::Reflow(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_FRAME_TRACE_REFLOW_IN("nsSimplePageSequenceFrame::Reflow");
|
|
|
|
aStatus = NS_FRAME_COMPLETE; // we're always complete
|
|
|
|
// Compute the size of each page and the x coordinate that each page will
|
|
// be placed at
|
|
nsSize pageSize;
|
|
aPresContext->GetPageWidth(&pageSize.width);
|
|
aPresContext->GetPageHeight(&pageSize.height);
|
|
PRInt32 extra = aReflowState.availableWidth - 2 * PAGE_SPACING_TWIPS - pageSize.width;
|
|
|
|
nscoord x = PAGE_SPACING_TWIPS;
|
|
if (extra > 0) {
|
|
x += extra / 2;
|
|
}
|
|
|
|
// Running y-offset for each page
|
|
nscoord y = PAGE_SPACING_TWIPS;
|
|
|
|
// See if it's an incremental reflow command
|
|
if (eReflowReason_Incremental == aReflowState.reason) {
|
|
IncrementalReflow(aPresContext, aReflowState, pageSize, x, y);
|
|
|
|
} else {
|
|
nsReflowReason reflowReason = aReflowState.reason;
|
|
|
|
// Tile the pages vertically
|
|
nsHTMLReflowMetrics kidSize(nsnull);
|
|
for (nsIFrame* kidFrame = mFrames.FirstChild(); nsnull != kidFrame; ) {
|
|
// Reflow the page
|
|
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
|
|
pageSize, reflowReason);
|
|
nsReflowStatus status;
|
|
|
|
// Place and size the page. If the page is narrower than our
|
|
// max width then center it horizontally
|
|
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, x, y, 0, status);
|
|
|
|
FinishReflowChild(kidFrame, aPresContext, kidSize, x, y, 0);
|
|
y += kidSize.height;
|
|
|
|
// Leave a slight gap between the pages
|
|
y += PAGE_SPACING_TWIPS;
|
|
|
|
// Is the page complete?
|
|
nsIFrame* kidNextInFlow;
|
|
kidFrame->GetNextInFlow(&kidNextInFlow);
|
|
|
|
if (NS_FRAME_IS_COMPLETE(status)) {
|
|
NS_ASSERTION(nsnull == kidNextInFlow, "bad child flow list");
|
|
} else if (nsnull == kidNextInFlow) {
|
|
// The page isn't complete and it doesn't have a next-in-flow, so
|
|
// create a continuing page
|
|
nsIFrame* continuingPage;
|
|
CreateContinuingPageFrame(aPresContext, kidFrame, &continuingPage);
|
|
|
|
// Add it to our child list
|
|
kidFrame->SetNextSibling(continuingPage);
|
|
reflowReason = eReflowReason_Initial;
|
|
}
|
|
|
|
// Get the next page
|
|
kidFrame->GetNextSibling(&kidFrame);
|
|
}
|
|
}
|
|
|
|
// Return our desired size
|
|
aDesiredSize.height = y;
|
|
aDesiredSize.width = 2*PAGE_SPACING_TWIPS + pageSize.width;
|
|
aDesiredSize.ascent = aDesiredSize.height;
|
|
aDesiredSize.descent = 0;
|
|
|
|
NS_FRAME_TRACE_REFLOW_OUT("nsSimplePageSequeceFrame::Reflow", aStatus);
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::GetFrameName(nsString& aResult) const
|
|
{
|
|
return MakeFrameName("SimplePageSequence", aResult);
|
|
}
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer)
|
|
{
|
|
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
|
|
// Paint a white background
|
|
aRenderingContext.SetColor(NS_RGB(255,255,255));
|
|
aRenderingContext.FillRect(aDirtyRect);
|
|
// XXX Crop marks or hash marks would be nice. Use style info...
|
|
}
|
|
|
|
return nsContainerFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
|
|
aWhichLayer);
|
|
}
|
|
|
|
void
|
|
nsSimplePageSequenceFrame::PaintChild(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsIFrame* aFrame,
|
|
nsFramePaintLayer aWhichLayer)
|
|
{
|
|
// Let the page paint
|
|
nsContainerFrame::PaintChild(aPresContext, aRenderingContext,
|
|
aDirtyRect, aFrame, aWhichLayer);
|
|
|
|
if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer) {
|
|
// XXX Paint a one-pixel border around the page so it's easy to see where
|
|
// each page begins and ends when we're in print preview mode
|
|
nsRect pageBounds;
|
|
float p2t;
|
|
aPresContext->GetPixelsToTwips(&p2t);
|
|
|
|
aRenderingContext.SetColor(NS_RGB(0, 0, 0));
|
|
aFrame->GetRect(pageBounds);
|
|
pageBounds.Inflate(NSToCoordRound(p2t), NSToCoordRound(p2t));
|
|
|
|
// this paints a rectangle around the for the printer output,
|
|
// which sometimes appears, other times
|
|
// goes away. I have to look into this further or ask troy..
|
|
// I took it out for the time being to fix some bugs -- dwc
|
|
//aRenderingContext.DrawRect(pageBounds);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
// Helper function that sends the progress notification. Returns PR_TRUE
|
|
// if printing should continue and PR_FALSE otherwise
|
|
static PRBool
|
|
SendStatusNotification(nsIPrintStatusCallback* aStatusCallback,
|
|
PRInt32 aPageNumber,
|
|
PRInt32 aTotalPages,
|
|
nsPrintStatus aStatus)
|
|
{
|
|
PRBool ret = PR_TRUE;
|
|
|
|
if (nsnull != aStatusCallback) {
|
|
aStatusCallback->OnProgress(aPageNumber, aTotalPages, aStatus,ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::Print(nsIPresContext* aPresContext,
|
|
const nsPrintOptions& aPrintOptions,
|
|
nsIPrintStatusCallback* aStatusCallback)
|
|
{
|
|
// If printing a range of pages make sure at least the starting page
|
|
// number is valid
|
|
PRInt32 totalPages = mFrames.GetLength();
|
|
|
|
if (ePrintRange_SpecifiedRange == aPrintOptions.range) {
|
|
if (aPrintOptions.startPage > totalPages) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
}
|
|
|
|
// Begin printing of the document
|
|
nsCOMPtr<nsIDeviceContext> dc;
|
|
aPresContext->GetDeviceContext(getter_AddRefs(dc));
|
|
nsCOMPtr<nsIPresShell> presShell;
|
|
aPresContext->GetShell(getter_AddRefs(presShell));
|
|
nsCOMPtr<nsIViewManager> vm;
|
|
presShell->GetViewManager(getter_AddRefs(vm));
|
|
nsresult rv = NS_OK;
|
|
|
|
// Print each specified page
|
|
PRInt32 pageNum = 1;
|
|
for (nsIFrame* page = mFrames.FirstChild(); nsnull != page; page->GetNextSibling(&page)) {
|
|
// See whether we should print this page
|
|
PRBool printThisPage = PR_TRUE;
|
|
|
|
// If printing a range of pages check whether the page number is in the
|
|
// range of pages to print
|
|
if (ePrintRange_SpecifiedRange == aPrintOptions.range) {
|
|
if (pageNum < aPrintOptions.startPage) {
|
|
printThisPage = PR_FALSE;
|
|
} else if (pageNum > aPrintOptions.endPage) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Check for printing of odd and even pages
|
|
if (pageNum & 0x1) {
|
|
if (!aPrintOptions.oddNumberedPages) {
|
|
printThisPage = PR_FALSE; // don't print odd numbered page
|
|
}
|
|
} else {
|
|
if (!aPrintOptions.evenNumberedPages) {
|
|
printThisPage = PR_FALSE; // don't print even numbered page
|
|
}
|
|
}
|
|
|
|
if (printThisPage) {
|
|
// Start printing of the page
|
|
if (!SendStatusNotification(aStatusCallback, pageNum, totalPages,
|
|
ePrintStatus_StartPage)) {
|
|
rv = NS_ERROR_ABORT;
|
|
break;
|
|
}
|
|
rv = dc->BeginPage();
|
|
if (NS_FAILED(rv)) {
|
|
if (nsnull != aStatusCallback) {
|
|
aStatusCallback->OnError(ePrintError_Error);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// Print the page
|
|
nsIView* view;
|
|
page->GetView(aPresContext, &view);
|
|
NS_ASSERTION(nsnull != view, "no page view");
|
|
vm->Display(view);
|
|
|
|
// this view was printed and since display set the origin
|
|
// 0,0 there is a danger that this view can be printed again
|
|
// If it is a sibling to another page/view. Setting the visibility
|
|
// to hide will keep this page from printing again - dwc
|
|
view->SetVisibility(nsViewVisibility_kHide);
|
|
|
|
// Finish printing of the page
|
|
if (!SendStatusNotification(aStatusCallback, pageNum, totalPages,
|
|
ePrintStatus_EndPage)) {
|
|
rv = NS_ERROR_ABORT;
|
|
break;
|
|
}
|
|
rv = dc->EndPage();
|
|
if (NS_FAILED(rv)) {
|
|
if (nsnull != aStatusCallback) {
|
|
aStatusCallback->OnError(ePrintError_Error);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Increment the page number
|
|
pageNum++;
|
|
}
|
|
|
|
return rv;
|
|
}
|