1998-09-09 02:34:40 +04:00
|
|
|
/* -*- 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 1.0 (the "NPL"); you may not use this file except in
|
|
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
|
|
* http://www.mozilla.org/NPL/
|
|
|
|
*
|
|
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
|
|
* for the specific language governing rights and limitations under the
|
|
|
|
* NPL.
|
|
|
|
*
|
|
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
|
|
* Communications Corporation. Portions created by Netscape are
|
|
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
|
|
* Reserved.
|
|
|
|
*/
|
|
|
|
#include "nsHTMLParts.h"
|
|
|
|
#include "nsCRT.h"
|
|
|
|
#include "nsSplittableFrame.h"
|
1998-09-15 04:19:49 +04:00
|
|
|
#include "nsLineLayout.h"
|
1998-09-09 02:34:40 +04:00
|
|
|
#include "nsString.h"
|
|
|
|
#include "nsIPresContext.h"
|
|
|
|
#include "nsStyleConsts.h"
|
|
|
|
#include "nsIStyleContext.h"
|
|
|
|
#include "nsCoord.h"
|
|
|
|
#include "nsIFontMetrics.h"
|
|
|
|
#include "nsIRenderingContext.h"
|
|
|
|
#include "nsHTMLIIDs.h"
|
|
|
|
#include "nsIPresShell.h"
|
|
|
|
#include "nsIView.h"
|
|
|
|
#include "nsIViewManager.h"
|
|
|
|
#include "nsITimerCallback.h"
|
|
|
|
#include "nsITimer.h"
|
|
|
|
#include "prtime.h"
|
|
|
|
#include "nsVoidArray.h"
|
|
|
|
#include "prprf.h"
|
|
|
|
#include "nsIDOMText.h"
|
|
|
|
#include "nsIDocument.h"
|
|
|
|
#include "nsIDeviceContext.h"
|
|
|
|
#include "nsXIFConverter.h"
|
|
|
|
#include "nsITextContent.h"
|
|
|
|
#include "nsISelection.h"
|
|
|
|
#include "nsSelectionRange.h"
|
|
|
|
|
|
|
|
static NS_DEFINE_IID(kIDOMTextIID, NS_IDOMTEXT_IID);
|
|
|
|
|
|
|
|
#ifdef NS_DEBUG
|
|
|
|
#undef NOISY
|
|
|
|
#undef NOISY_BLINK
|
1998-10-10 08:35:21 +04:00
|
|
|
#undef DEBUG_WORD_WRAPPING
|
1998-09-09 02:34:40 +04:00
|
|
|
#else
|
|
|
|
#undef NOISY
|
|
|
|
#undef NOISY_BLINK
|
1998-10-10 08:35:21 +04:00
|
|
|
#undef DEBUG_WORD_WRAPPING
|
1998-09-09 02:34:40 +04:00
|
|
|
#endif
|
|
|
|
|
|
|
|
// XXX TODO:
|
|
|
|
// 0. re-implement justified text
|
|
|
|
// 1. add in a rendering method that can render justified text
|
|
|
|
// 2. text renderer should negotiate with rendering context/font
|
|
|
|
// metrics to see what it can handle; for example, if the renderer can
|
|
|
|
// automatically deal with underlining, strikethrough, justification,
|
|
|
|
// etc, then the text renderer should let the rc do the work;
|
|
|
|
// otherwise there should be XP fallback code here.
|
|
|
|
|
|
|
|
// XXX TODO:
|
|
|
|
// implement nsIFrame::Reflow
|
|
|
|
|
|
|
|
// XXX Speedup ideas
|
|
|
|
// 1. justified text can use word width information during resize reflows
|
|
|
|
// 2. when we are doing an unconstrained reflow we know we are going to
|
|
|
|
// get reflowed again; collect up the word widths we are computing as we
|
|
|
|
// do this and then save them in the mWords; later on when we get reflowed
|
|
|
|
// again we can destroy them
|
|
|
|
// 3. when pulling up text get word width information from next-in-flow
|
|
|
|
|
|
|
|
// XXX temporary
|
|
|
|
#define XP_IS_SPACE(_ch) \
|
|
|
|
(((_ch) == ' ') || ((_ch) == '\t') || ((_ch) == '\n'))
|
|
|
|
|
1998-10-02 05:12:39 +04:00
|
|
|
// XXX need more of this in nsIRenderingContext.GetWidth
|
1998-09-09 02:34:40 +04:00
|
|
|
#define CH_NBSP 160
|
|
|
|
|
|
|
|
// XXX use a PreTextFrame for pre-formatted text?
|
|
|
|
|
|
|
|
static NS_DEFINE_IID(kITextContentIID, NS_ITEXT_CONTENT_IID);
|
|
|
|
|
|
|
|
class TextFrame;
|
|
|
|
|
|
|
|
class BlinkTimer : public nsITimerCallback {
|
|
|
|
public:
|
|
|
|
BlinkTimer();
|
|
|
|
~BlinkTimer();
|
|
|
|
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
|
|
|
|
void AddFrame(TextFrame* aFrame);
|
|
|
|
|
|
|
|
PRBool RemoveFrame(TextFrame* aFrame);
|
|
|
|
|
|
|
|
PRInt32 FrameCount();
|
|
|
|
|
|
|
|
void Start();
|
|
|
|
|
|
|
|
void Stop();
|
|
|
|
|
|
|
|
virtual void Notify(nsITimer *timer);
|
|
|
|
|
|
|
|
nsITimer* mTimer;
|
|
|
|
nsVoidArray mFrames;
|
|
|
|
};
|
|
|
|
|
1998-10-03 08:28:05 +04:00
|
|
|
class TextFrame : public nsSplittableFrame {
|
1998-09-09 02:34:40 +04:00
|
|
|
public:
|
|
|
|
TextFrame(nsIContent* aContent, nsIFrame* aParentFrame);
|
|
|
|
|
|
|
|
// nsIFrame
|
1998-09-18 06:47:03 +04:00
|
|
|
NS_IMETHOD CreateContinuingFrame(nsIPresContext& aPresContext,
|
|
|
|
nsIFrame* aParent,
|
|
|
|
nsIStyleContext* aStyleContext,
|
|
|
|
nsIFrame*& aContinuingFrame);
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
NS_IMETHOD Paint(nsIPresContext& aPresContext,
|
|
|
|
nsIRenderingContext& aRenderingContext,
|
|
|
|
const nsRect& aDirtyRect);
|
|
|
|
|
|
|
|
NS_IMETHOD GetCursorAndContentAt(nsIPresContext& aPresContext,
|
|
|
|
const nsPoint& aPoint,
|
|
|
|
nsIFrame** aFrame,
|
|
|
|
nsIContent** aContent,
|
|
|
|
PRInt32& aCursor);
|
|
|
|
|
1998-09-30 03:48:07 +04:00
|
|
|
NS_IMETHOD ContentChanged(nsIPresContext* aPresContext,
|
1998-09-09 02:34:40 +04:00
|
|
|
nsIContent* aChild,
|
|
|
|
nsISupports* aSubContent);
|
|
|
|
|
|
|
|
NS_IMETHOD List(FILE* out, PRInt32 aIndent) const;
|
|
|
|
|
|
|
|
NS_IMETHOD ListTag(FILE* out) const;
|
|
|
|
|
1998-10-02 05:12:39 +04:00
|
|
|
NS_IMETHOD GetPosition(nsIPresContext& aCX,
|
|
|
|
nsIRenderingContext * aRendContext,
|
|
|
|
nsGUIEvent* aEvent,
|
|
|
|
nsIFrame * aNewFrame,
|
|
|
|
PRUint32& aAcutalContentOffset,
|
|
|
|
PRInt32& aOffset);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
1998-10-03 08:28:05 +04:00
|
|
|
// nsIHTMLReflow
|
1998-10-10 03:46:02 +04:00
|
|
|
NS_IMETHOD FindTextRuns(nsLineLayout& aLineLayout);
|
1998-10-03 08:28:05 +04:00
|
|
|
NS_IMETHOD Reflow(nsIPresContext& aPresContext,
|
|
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
nsReflowStatus& aStatus);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
// TextFrame methods
|
|
|
|
struct SelectionInfo {
|
|
|
|
PRInt32 mStartOffset;
|
|
|
|
PRInt32 mEndOffset;
|
|
|
|
PRBool mEmptySelection;
|
|
|
|
};
|
|
|
|
|
|
|
|
void ComputeSelectionInfo(nsIRenderingContext& aRenderingContext,
|
|
|
|
nsIDocument* aDocument,
|
|
|
|
PRInt32* aIndicies, PRInt32 aTextLength,
|
|
|
|
SelectionInfo& aResult);
|
|
|
|
|
1998-10-03 04:48:19 +04:00
|
|
|
PRUnichar* PrepareUnicodeText(nsIRenderingContext& aRenderingContext,
|
|
|
|
PRInt32* aIndicies,
|
1998-09-09 02:34:40 +04:00
|
|
|
PRUnichar* aBuffer, PRInt32 aBufSize,
|
1998-10-03 04:48:19 +04:00
|
|
|
PRInt32& aStrLen,
|
|
|
|
nscoord& aNewWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
1998-10-03 04:48:19 +04:00
|
|
|
char* PrepareAsciiText(nsIRenderingContext& aRenderingContext,
|
|
|
|
PRInt32* aIndexes,
|
1998-09-09 02:34:40 +04:00
|
|
|
char* aBuffer, PRInt32 aBufSize,
|
1998-10-03 04:48:19 +04:00
|
|
|
PRInt32& aStrLen,
|
|
|
|
nscoord& aDeltaWidthResult);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
1998-09-17 04:18:25 +04:00
|
|
|
void PaintTextDecorations(nsIRenderingContext& aRenderingContext,
|
|
|
|
PRUint8 aDecorations,
|
|
|
|
nscoord aX, nscoord aY, nscoord aWidth);
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
void PaintUnicodeText(nsIPresContext& aPresContext,
|
|
|
|
nsIRenderingContext& aRenderingContext,
|
|
|
|
nscolor aTextColor,
|
1998-09-17 04:18:25 +04:00
|
|
|
PRUint8 aDecorations,
|
1998-09-09 02:34:40 +04:00
|
|
|
nscolor aSelectionTextColor,
|
|
|
|
nscolor aSelectionBGColor,
|
|
|
|
nscoord dx, nscoord dy);
|
|
|
|
|
|
|
|
void PaintAsciiText(nsIPresContext& aPresContext,
|
|
|
|
nsIRenderingContext& aRenderingContext,
|
|
|
|
nscolor aTextColor,
|
1998-09-17 04:18:25 +04:00
|
|
|
PRUint8 aDecorations,
|
1998-09-09 02:34:40 +04:00
|
|
|
nscolor aSelectionTextColor,
|
|
|
|
nscolor aSelectionBGColor,
|
|
|
|
nscoord dx, nscoord dy);
|
|
|
|
|
1998-10-03 08:28:05 +04:00
|
|
|
nsReflowStatus ReflowPre(nsLineLayout& aLineLayout,
|
|
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
const nsStyleFont& aFont,
|
|
|
|
PRInt32 aStartingOffset);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
1998-10-03 08:28:05 +04:00
|
|
|
nsReflowStatus ReflowNormal(nsLineLayout& aLineLayout,
|
|
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
const nsStyleFont& aFontStyle,
|
|
|
|
const nsStyleText& aTextStyle,
|
|
|
|
PRInt32 aStartingOffset);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
1998-10-10 08:35:21 +04:00
|
|
|
nscoord ComputeTotalWordWidth(nsLineLayout& aLineLayout,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
nsIFrame* aNextFrame,
|
|
|
|
nscoord aBaseWidth);
|
|
|
|
|
|
|
|
nscoord ComputeWordFragmentWidth(nsLineLayout& aLineLayout,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
nsIFrame* aNextFrame,
|
|
|
|
nsITextContent* aText,
|
|
|
|
PRBool& aStop);
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
protected:
|
|
|
|
virtual ~TextFrame();
|
|
|
|
|
|
|
|
PRInt32 mContentOffset;
|
|
|
|
PRInt32 mContentLength;
|
|
|
|
|
|
|
|
// XXX need a better packing
|
|
|
|
PRUint32 mFlags;
|
|
|
|
PRUint32 mColumn;
|
|
|
|
};
|
|
|
|
|
|
|
|
// Flag information used by rendering code. This information is
|
|
|
|
// computed by the ResizeReflow code. Remaining bits are used by the
|
|
|
|
// tab count.
|
|
|
|
#define TEXT_SKIP_LEADING_WS 0x01
|
|
|
|
#define TEXT_HAS_MULTIBYTE 0x02
|
|
|
|
#define TEXT_IS_PRE 0x04
|
|
|
|
#define TEXT_BLINK_ON 0x08
|
1998-10-10 08:35:21 +04:00
|
|
|
//#define TEXT_ENDS_IN_WHITESPACE 0x10
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
#define TEXT_GET_TAB_COUNT(_mf) ((_mf) >> 5)
|
|
|
|
#define TEXT_SET_TAB_COUNT(_mf,_tabs) (_mf) = (_mf) | ((_tabs)<< 5)
|
|
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
|
|
|
|
static PRBool gBlinkTextOff;
|
|
|
|
static BlinkTimer* gTextBlinker;
|
|
|
|
#ifdef NOISY_BLINK
|
|
|
|
static PRTime gLastTick;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
BlinkTimer::BlinkTimer()
|
|
|
|
{
|
|
|
|
NS_INIT_REFCNT();
|
|
|
|
mTimer = nsnull;
|
|
|
|
}
|
|
|
|
|
|
|
|
BlinkTimer::~BlinkTimer()
|
|
|
|
{
|
|
|
|
Stop();
|
|
|
|
}
|
|
|
|
|
|
|
|
void BlinkTimer::Start()
|
|
|
|
{
|
|
|
|
nsresult rv = NS_NewTimer(&mTimer);
|
|
|
|
if (NS_OK == rv) {
|
|
|
|
mTimer->Init(this, 750);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void BlinkTimer::Stop()
|
|
|
|
{
|
|
|
|
if (nsnull != mTimer) {
|
|
|
|
mTimer->Cancel();
|
|
|
|
NS_RELEASE(mTimer);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static NS_DEFINE_IID(kITimerCallbackIID, NS_ITIMERCALLBACK_IID);
|
|
|
|
NS_IMPL_ISUPPORTS(BlinkTimer, kITimerCallbackIID);
|
|
|
|
|
|
|
|
void BlinkTimer::AddFrame(TextFrame* aFrame) {
|
|
|
|
mFrames.AppendElement(aFrame);
|
|
|
|
if (1 == mFrames.Count()) {
|
|
|
|
Start();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
PRBool BlinkTimer::RemoveFrame(TextFrame* aFrame) {
|
|
|
|
PRBool rv = mFrames.RemoveElement(aFrame);
|
|
|
|
if (0 == mFrames.Count()) {
|
|
|
|
Stop();
|
|
|
|
}
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
|
|
|
|
PRInt32 BlinkTimer::FrameCount() {
|
|
|
|
return mFrames.Count();
|
|
|
|
}
|
|
|
|
|
|
|
|
void BlinkTimer::Notify(nsITimer *timer)
|
|
|
|
{
|
|
|
|
// Toggle blink state bit so that text code knows whether or not to
|
|
|
|
// render. All text code shares the same flag so that they all blink
|
|
|
|
// in unison.
|
|
|
|
gBlinkTextOff = PRBool(!gBlinkTextOff);
|
|
|
|
|
|
|
|
// XXX hack to get auto-repeating timers; restart before doing
|
|
|
|
// expensive work so that time between ticks is more even
|
|
|
|
Stop();
|
|
|
|
Start();
|
|
|
|
|
|
|
|
#ifdef NOISY_BLINK
|
|
|
|
PRTime now = PR_Now();
|
|
|
|
char buf[50];
|
|
|
|
PRTime delta;
|
|
|
|
LL_SUB(delta, now, gLastTick);
|
|
|
|
gLastTick = now;
|
|
|
|
PR_snprintf(buf, sizeof(buf), "%lldusec", delta);
|
|
|
|
printf("%s\n", buf);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
PRInt32 i, n = mFrames.Count();
|
|
|
|
for (i = 0; i < n; i++) {
|
|
|
|
TextFrame* text = (TextFrame*) mFrames.ElementAt(i);
|
|
|
|
|
|
|
|
// Determine damaged area and tell view manager to redraw it
|
|
|
|
nsPoint offset;
|
|
|
|
nsRect bounds;
|
|
|
|
text->GetRect(bounds);
|
|
|
|
nsIView* view;
|
|
|
|
text->GetOffsetFromView(offset, view);
|
|
|
|
nsIViewManager* vm;
|
|
|
|
view->GetViewManager(vm);
|
|
|
|
bounds.x = offset.x;
|
|
|
|
bounds.y = offset.y;
|
|
|
|
vm->UpdateView(view, bounds, 0);
|
|
|
|
NS_RELEASE(vm);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
|
|
|
|
nsresult
|
|
|
|
NS_NewTextFrame(nsIContent* aContent, nsIFrame* aParentFrame,
|
|
|
|
nsIFrame*& aResult)
|
|
|
|
{
|
|
|
|
nsIFrame* frame = new TextFrame(aContent, aParentFrame);
|
|
|
|
if (nsnull == frame) {
|
|
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
}
|
|
|
|
aResult = frame;
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
TextFrame::TextFrame(nsIContent* aContent, nsIFrame* aParentFrame)
|
|
|
|
: nsSplittableFrame(aContent, aParentFrame)
|
|
|
|
{
|
|
|
|
if (nsnull == gTextBlinker) {
|
|
|
|
// Create text timer the first time out
|
|
|
|
gTextBlinker = new BlinkTimer();
|
|
|
|
}
|
|
|
|
NS_ADDREF(gTextBlinker);
|
|
|
|
}
|
|
|
|
|
|
|
|
TextFrame::~TextFrame()
|
|
|
|
{
|
|
|
|
if (0 != (mFlags & TEXT_BLINK_ON)) {
|
|
|
|
NS_ASSERTION(nsnull != gTextBlinker, "corrupted blinker");
|
|
|
|
gTextBlinker->RemoveFrame(this);
|
|
|
|
}
|
|
|
|
if (0 == gTextBlinker->Release()) {
|
|
|
|
// Release text timer when the last text frame is gone
|
|
|
|
gTextBlinker = nsnull;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
|
|
TextFrame::GetCursorAndContentAt(nsIPresContext& aPresContext,
|
|
|
|
const nsPoint& aPoint,
|
|
|
|
nsIFrame** aFrame,
|
|
|
|
nsIContent** aContent,
|
|
|
|
PRInt32& aCursor)
|
|
|
|
{
|
|
|
|
*aContent = mContent;
|
|
|
|
aCursor = NS_STYLE_CURSOR_IBEAM;
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
1998-09-18 06:47:03 +04:00
|
|
|
NS_IMETHODIMP
|
|
|
|
TextFrame::CreateContinuingFrame(nsIPresContext& aCX,
|
|
|
|
nsIFrame* aParent,
|
|
|
|
nsIStyleContext* aStyleContext,
|
|
|
|
nsIFrame*& aContinuingFrame)
|
|
|
|
{
|
|
|
|
TextFrame* cf = new TextFrame(mContent, aParent);
|
|
|
|
if (nsnull == cf) {
|
|
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
}
|
|
|
|
cf->SetStyleContext(&aCX, aStyleContext);
|
|
|
|
cf->AppendToFlow(this);
|
|
|
|
aContinuingFrame = cf;
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
NS_IMETHODIMP
|
1998-09-30 03:48:07 +04:00
|
|
|
TextFrame::ContentChanged(nsIPresContext* aPresContext,
|
1998-09-09 02:34:40 +04:00
|
|
|
nsIContent* aChild,
|
|
|
|
nsISupports* aSubContent)
|
|
|
|
{
|
|
|
|
// Generate a reflow command with this frame as the target frame
|
|
|
|
nsIReflowCommand* cmd;
|
|
|
|
nsresult result;
|
|
|
|
|
|
|
|
result = NS_NewHTMLReflowCommand(&cmd, this, nsIReflowCommand::ContentChanged);
|
|
|
|
if (NS_OK == result) {
|
1998-09-30 03:48:07 +04:00
|
|
|
nsIPresShell* shell = aPresContext->GetShell();
|
|
|
|
shell->AppendReflowCommand(cmd);
|
|
|
|
NS_RELEASE(shell);
|
1998-09-09 02:34:40 +04:00
|
|
|
NS_RELEASE(cmd);
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
|
|
TextFrame::Paint(nsIPresContext& aPresContext,
|
|
|
|
nsIRenderingContext& aRenderingContext,
|
|
|
|
const nsRect& aDirtyRect)
|
|
|
|
{
|
|
|
|
if ((0 != (mFlags & TEXT_BLINK_ON)) && gBlinkTextOff) {
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
const nsStyleDisplay* disp =
|
|
|
|
(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
|
|
|
|
|
|
|
|
if (disp->mVisible) {
|
|
|
|
// Get style data
|
|
|
|
const nsStyleColor* color =
|
|
|
|
(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
|
|
|
|
const nsStyleFont* font =
|
|
|
|
(const nsStyleFont*)mStyleContext->GetStyleData(eStyleStruct_Font);
|
|
|
|
|
|
|
|
// Set font and color
|
|
|
|
aRenderingContext.SetColor(color->mColor);
|
1998-09-17 04:18:25 +04:00
|
|
|
nsFont plainFont(font->mFont);
|
|
|
|
plainFont.decorations = NS_FONT_DECORATION_NONE;
|
|
|
|
aRenderingContext.SetFont(plainFont); // don't let the system paint decorations
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
// XXX Get these from style
|
|
|
|
nscolor selbg = NS_RGB(0, 0, 0);
|
|
|
|
nscolor selfg = NS_RGB(255, 255, 255);
|
|
|
|
|
|
|
|
// Select rendering method and render
|
|
|
|
PRUint32 hints = 0;
|
|
|
|
aRenderingContext.GetHints(hints);
|
|
|
|
if ((TEXT_HAS_MULTIBYTE & mFlags) ||
|
|
|
|
(0 == (hints & NS_RENDERING_HINT_FAST_8BIT_TEXT))) {
|
|
|
|
// Use PRUnichar rendering routine
|
|
|
|
PaintUnicodeText(aPresContext, aRenderingContext,
|
1998-09-17 04:18:25 +04:00
|
|
|
color->mColor, font->mFont.decorations, selfg, selbg, 0, 0);
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
// Use char rendering routine
|
|
|
|
PaintAsciiText(aPresContext, aRenderingContext,
|
1998-09-17 04:18:25 +04:00
|
|
|
color->mColor, font->mFont.decorations, selfg, selbg, 0, 0);
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* To keep things efficient we depend on text content implementing
|
|
|
|
* our nsITextContent API
|
|
|
|
*/
|
|
|
|
static const PRUnichar*
|
|
|
|
GetText(nsIContent* aContent, PRInt32& aLengthResult)
|
|
|
|
{
|
|
|
|
const PRUnichar* cp = nsnull;
|
|
|
|
nsITextContent* tc = nsnull;
|
1998-09-29 20:24:32 +04:00
|
|
|
nsresult rv = aContent->QueryInterface(kITextContentIID, (void**) &tc);
|
|
|
|
if ((NS_OK == rv) && (nsnull != tc)) {
|
1998-09-09 02:34:40 +04:00
|
|
|
tc->GetText(cp, aLengthResult);
|
|
|
|
NS_RELEASE(tc);
|
|
|
|
}
|
|
|
|
return cp;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This method computes the starting and ending offsets of the
|
|
|
|
* selection for this frame. The results are placed into
|
|
|
|
* aResult. There are 5 cases that we represent with a starting offset
|
|
|
|
* (aResult.mStartOffset), ending offset (aResult.mEndOffset) and an
|
|
|
|
* empty selection flag (aResult.mEmptySelection):
|
|
|
|
*
|
|
|
|
* case 1: The selection completely misses this content/frame. In this
|
|
|
|
* case mStartOffset and mEndOffset will be set to aTextLength and
|
|
|
|
* mEmptySelection will be false.
|
|
|
|
*
|
|
|
|
* case 2: The selection begins somewhere before or at this frame and
|
|
|
|
* ends somewhere in this frame. In this case mStartOffset will be set
|
|
|
|
* to 0 and mEndOffset will be set to the end of the selection and
|
|
|
|
* mEmptySelection will be false.
|
|
|
|
*
|
|
|
|
* case 3: The selection begins somewhere in this frame and ends
|
|
|
|
* somewhere in this frame. In this case mStartOffset and mEndOffset
|
|
|
|
* are set accordingly and if they happen to be the same value then
|
|
|
|
* mEmptySelection is set to true (otherwise it is set to false).
|
|
|
|
*
|
|
|
|
* case 4: The selection begins somewhere in this frame and ends
|
|
|
|
* somewhere else. In this case mStartOffset is set to where the
|
|
|
|
* selection begins and mEndOffset is set to aTextLength and
|
|
|
|
* mEmptySelection is set to false.
|
|
|
|
*
|
|
|
|
* case 5: The selection covers the entire content/frame. In this case
|
|
|
|
* mStartOffset is set to zero and mEndOffset is set to aTextLength and
|
|
|
|
* mEmptySelection is set to false.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
TextFrame::ComputeSelectionInfo(nsIRenderingContext& aRenderingContext,
|
|
|
|
nsIDocument* aDocument,
|
|
|
|
PRInt32* aIndicies, PRInt32 aTextLength,
|
|
|
|
SelectionInfo& aResult)
|
|
|
|
{
|
|
|
|
// Assume, for now, that the selection misses this section of
|
|
|
|
// content completely.
|
|
|
|
aResult.mStartOffset = aTextLength;
|
|
|
|
aResult.mEndOffset = aTextLength;
|
|
|
|
aResult.mEmptySelection = PR_FALSE;
|
|
|
|
|
1998-09-09 20:11:59 +04:00
|
|
|
nsISelection * selection;
|
|
|
|
aDocument->GetSelection(selection);
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
nsSelectionRange * range = selection->GetRange();
|
|
|
|
nsSelectionPoint * startPnt = range->GetStartPoint();
|
|
|
|
nsSelectionPoint * endPnt = range->GetEndPoint();
|
|
|
|
nsIContent * startContent = startPnt->GetContent();
|
|
|
|
nsIContent * endContent = endPnt->GetContent();
|
|
|
|
PRInt32 startOffset = startPnt->GetOffset() - mContentOffset;
|
|
|
|
PRInt32 endOffset = endPnt->GetOffset() - mContentOffset;
|
|
|
|
|
|
|
|
// Check for the case that requires up to 3 sections first. This
|
|
|
|
// case also handles the empty selection.
|
|
|
|
if ((mContent == startContent) && (mContent == endContent)) {
|
|
|
|
// Selection starts and ends in this content (but maybe not this
|
|
|
|
// frame)
|
|
|
|
if ((startOffset >= mContentLength) || (endOffset <= 0)) {
|
|
|
|
// Selection doesn't intersect this frame
|
|
|
|
}
|
|
|
|
else if (endOffset < mContentLength) {
|
|
|
|
// End of selection is in this frame
|
|
|
|
aResult.mEndOffset = aIndicies[endOffset] - mContentOffset;
|
|
|
|
if (startOffset > 0) {
|
|
|
|
// Beginning of selection is also in this frame (this is the 3
|
|
|
|
// section case)
|
|
|
|
aResult.mStartOffset = aIndicies[startOffset] - mContentOffset;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// This is a 2 section case
|
|
|
|
aResult.mStartOffset = 0;
|
|
|
|
}
|
|
|
|
if (startOffset == endOffset) {
|
|
|
|
aResult.mEmptySelection = PR_TRUE;
|
|
|
|
}
|
|
|
|
} else if (startOffset > 0) {
|
|
|
|
// This is a 2 section case
|
|
|
|
aResult.mStartOffset = aIndicies[startOffset] - mContentOffset;
|
|
|
|
} else {
|
|
|
|
// This is a 1 section case (where the entire section is
|
|
|
|
// selected)
|
|
|
|
aResult.mStartOffset = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (aDocument->IsInRange(startContent, endContent, mContent)) {
|
|
|
|
if (mContent == startContent) {
|
|
|
|
// Selection starts (but does not end) in this content (but
|
|
|
|
// maybe not in this frame)
|
|
|
|
if (startOffset <= 0) {
|
|
|
|
// Selection starts before or at this frame
|
|
|
|
aResult.mStartOffset = 0;
|
|
|
|
}
|
|
|
|
else if (startOffset < mContentLength) {
|
|
|
|
// Selection starts somewhere in this frame
|
|
|
|
aResult.mStartOffset = aIndicies[startOffset] - mContentOffset;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// Selection starts after this frame
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (mContent == endContent) {
|
|
|
|
// Selection ends (but does not start) in this content (but
|
|
|
|
// maybe not in this frame)
|
|
|
|
if (endOffset <= 0) {
|
|
|
|
// Selection ends before this frame
|
|
|
|
}
|
|
|
|
else if (endOffset < mContentLength) {
|
|
|
|
// Selection ends in this frame
|
|
|
|
aResult.mStartOffset = 0;
|
|
|
|
aResult.mEndOffset = aIndicies[endOffset] - mContentOffset;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// Selection ends after this frame (the entire frame is selected)
|
|
|
|
aResult.mStartOffset = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// Selection starts before this content and ends after this
|
|
|
|
// content therefore the entire frame is selected
|
|
|
|
aResult.mStartOffset = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IF_RELEASE(startContent);
|
|
|
|
NS_IF_RELEASE(endContent);
|
|
|
|
NS_RELEASE(selection);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define XP_IS_SPACE_W XP_IS_SPACE
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Prepare the text in the content for rendering. If aIndexes is not nsnull
|
|
|
|
* then fill in aIndexes's with the mapping from the original input to
|
|
|
|
* the prepared output.
|
|
|
|
*/
|
|
|
|
PRUnichar*
|
1998-10-03 04:48:19 +04:00
|
|
|
TextFrame::PrepareUnicodeText(nsIRenderingContext& aRenderingContext,
|
|
|
|
PRInt32* aIndexes,
|
1998-09-09 02:34:40 +04:00
|
|
|
PRUnichar* aBuffer, PRInt32 aBufSize,
|
1998-10-03 04:48:19 +04:00
|
|
|
PRInt32& aStrLen,
|
|
|
|
nscoord& aNewWidth)
|
1998-09-09 02:34:40 +04:00
|
|
|
{
|
|
|
|
PRUnichar* s = aBuffer;
|
|
|
|
PRUnichar* s0 = s;
|
|
|
|
|
|
|
|
// Get text content
|
|
|
|
PRInt32 textLength;
|
|
|
|
const PRUnichar* cp = GetText(mContent, textLength);
|
|
|
|
if (0 == textLength) {
|
|
|
|
aBuffer[0] = 0;
|
|
|
|
aStrLen = 0;
|
|
|
|
return aBuffer;
|
|
|
|
}
|
|
|
|
cp += mContentOffset;
|
|
|
|
const PRUnichar* end = cp + mContentLength;
|
|
|
|
|
|
|
|
// Skip leading space if necessary
|
|
|
|
PRInt32 mappingInx = 0;
|
|
|
|
PRInt32 strInx = mContentOffset;
|
|
|
|
if (0 != (mFlags & TEXT_SKIP_LEADING_WS)) {
|
|
|
|
while (cp < end) {
|
|
|
|
PRUnichar ch = *cp++;
|
|
|
|
if (!XP_IS_SPACE_W(ch)) {
|
|
|
|
cp--;
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
PRInt32 length = 0;
|
|
|
|
if (0 != (TEXT_IS_PRE & mFlags)) {
|
|
|
|
PRIntn tabs = TEXT_GET_TAB_COUNT(mFlags);
|
|
|
|
|
|
|
|
// Make a copy of the text we are to render, translating tabs
|
|
|
|
// into whitespace.
|
|
|
|
PRInt32 maxLen = (end - cp) + 8*tabs;
|
|
|
|
if (maxLen > aBufSize) {
|
|
|
|
s0 = s = new PRUnichar[maxLen];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Translate tabs into whitespace; translate other whitespace into
|
|
|
|
// spaces.
|
|
|
|
PRIntn col = (PRIntn) mColumn;
|
|
|
|
while (cp < end) {
|
|
|
|
PRUnichar ch = *cp++;
|
|
|
|
if (XP_IS_SPACE_W(ch)) {
|
|
|
|
if (ch == '\t') {
|
|
|
|
PRIntn spaces = 8 - (col & 7);
|
|
|
|
col += spaces;
|
|
|
|
while (--spaces >= 0) {
|
|
|
|
*s++ = ' ';
|
|
|
|
length++;
|
|
|
|
}
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
strInx++;/* XXX wrong? */
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
} else {
|
1998-09-29 20:24:32 +04:00
|
|
|
ch = ' ';
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
}
|
1998-09-29 20:24:32 +04:00
|
|
|
else if (ch == CH_NBSP) {
|
|
|
|
ch = ' ';
|
|
|
|
}
|
|
|
|
*s++ = ch;
|
|
|
|
length++;
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
strInx++;
|
|
|
|
}
|
1998-09-09 02:34:40 +04:00
|
|
|
col++;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// Make a copy of the text we are to render, compressing out
|
|
|
|
// whitespace; translating whitespace to literal spaces;
|
|
|
|
// eliminating trailing whitespace.
|
|
|
|
PRInt32 maxLen = end - cp;
|
|
|
|
if (maxLen > aBufSize) {
|
|
|
|
s0 = s = new PRUnichar[maxLen];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Compress down the whitespace
|
|
|
|
while (cp < end) {
|
|
|
|
PRUnichar ch = *cp++;
|
|
|
|
if (XP_IS_SPACE_W(ch)) {
|
|
|
|
while (cp < end) {
|
|
|
|
ch = *cp++;
|
|
|
|
if (!XP_IS_SPACE_W(ch)) {
|
|
|
|
cp--;
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
1998-09-29 20:24:32 +04:00
|
|
|
ch = ' ';
|
|
|
|
}
|
|
|
|
else if (ch == CH_NBSP) {
|
|
|
|
ch = ' ';
|
|
|
|
}
|
|
|
|
*s++ = ch;
|
|
|
|
length++;
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
strInx++;
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1998-10-03 04:48:19 +04:00
|
|
|
// Now remove trailing whitespace
|
|
|
|
PRIntn zapped = 0;
|
|
|
|
while (s > s0) {
|
|
|
|
if (s[-1] == ' ') {
|
|
|
|
s--;
|
|
|
|
length--;
|
|
|
|
zapped++;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (0 != zapped) {
|
|
|
|
nscoord spaceWidth;
|
|
|
|
aRenderingContext.GetWidth(' ', spaceWidth);
|
|
|
|
aNewWidth = aNewWidth - spaceWidth*zapped;
|
|
|
|
}
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
aStrLen = length;
|
|
|
|
return s0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Prepare the text in the content for rendering. If aIndexes is not nsnull
|
|
|
|
* then fill in aIndexes's with the mapping from the original input to
|
|
|
|
* the prepared output.
|
|
|
|
*/
|
|
|
|
char*
|
1998-10-03 04:48:19 +04:00
|
|
|
TextFrame::PrepareAsciiText(nsIRenderingContext& aRenderingContext,
|
|
|
|
PRInt32* aIndexes,
|
1998-09-09 02:34:40 +04:00
|
|
|
char* aBuffer, PRInt32 aBufSize,
|
1998-10-03 04:48:19 +04:00
|
|
|
PRInt32& aStrLen,
|
|
|
|
nscoord& aNewWidth)
|
1998-09-09 02:34:40 +04:00
|
|
|
{
|
|
|
|
char* s = aBuffer;
|
|
|
|
char* s0 = s;
|
|
|
|
|
|
|
|
// Get text content
|
|
|
|
PRInt32 textLength;
|
|
|
|
const PRUnichar* cp = GetText(mContent, textLength);
|
|
|
|
if (0 == textLength) {
|
|
|
|
aBuffer[0] = 0;
|
|
|
|
aStrLen = 0;
|
|
|
|
return aBuffer;
|
|
|
|
}
|
|
|
|
cp += mContentOffset;
|
|
|
|
const PRUnichar* end = cp + mContentLength;
|
|
|
|
|
|
|
|
// Skip leading space if necessary
|
|
|
|
PRInt32 mappingInx = 0;
|
|
|
|
PRInt32 strInx = mContentOffset;
|
|
|
|
if (0 != (mFlags & TEXT_SKIP_LEADING_WS)) {
|
|
|
|
while (cp < end) {
|
|
|
|
char ch = char(*cp++);
|
|
|
|
if (!XP_IS_SPACE(ch)) {
|
|
|
|
cp--;
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
PRInt32 length = 0;
|
|
|
|
if (0 != (TEXT_IS_PRE & mFlags)) {
|
|
|
|
PRIntn tabs = TEXT_GET_TAB_COUNT(mFlags);
|
|
|
|
|
|
|
|
// Make a copy of the text we are to render, translating tabs
|
|
|
|
// into whitespace.
|
|
|
|
PRInt32 maxLen = (end - cp) + 8*tabs;
|
|
|
|
if (maxLen > aBufSize) {
|
|
|
|
s0 = s = new char[maxLen];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Translate tabs into whitespace; translate other whitespace into
|
|
|
|
// spaces.
|
|
|
|
PRIntn col = (PRIntn) mColumn;
|
|
|
|
while (cp < end) {
|
|
|
|
char ch = char(*cp++);
|
|
|
|
if (XP_IS_SPACE(ch)) {
|
|
|
|
if (ch == '\t') {
|
|
|
|
PRIntn spaces = 8 - (col & 7);
|
|
|
|
col += spaces;
|
|
|
|
while (--spaces >= 0) {
|
|
|
|
*s++ = ' ';
|
|
|
|
length++;
|
|
|
|
}
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
strInx++;/* XXX wrong? */
|
|
|
|
}
|
|
|
|
continue;
|
|
|
|
} else {
|
1998-09-29 20:24:32 +04:00
|
|
|
ch = ' ';
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
}
|
1998-09-29 20:24:32 +04:00
|
|
|
else if (ch == CH_NBSP) {
|
|
|
|
ch = ' ';
|
|
|
|
}
|
|
|
|
*s++ = ch;
|
|
|
|
length++;
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
strInx++;
|
|
|
|
}
|
1998-09-09 02:34:40 +04:00
|
|
|
col++;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// Make a copy of the text we are to render, compressing out
|
|
|
|
// whitespace; translating whitespace to literal spaces;
|
|
|
|
// eliminating trailing whitespace.
|
|
|
|
PRInt32 maxLen = end - cp;
|
|
|
|
if (maxLen > aBufSize) {
|
|
|
|
s0 = s = new char[maxLen];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Compress down the whitespace
|
|
|
|
while (cp < end) {
|
|
|
|
char ch = char(*cp++);
|
|
|
|
if (XP_IS_SPACE(ch)) {
|
|
|
|
while (cp < end) {
|
|
|
|
ch = char(*cp++);
|
|
|
|
if (!XP_IS_SPACE(ch)) {
|
|
|
|
cp--;
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
1998-09-29 20:24:32 +04:00
|
|
|
ch = ' ';
|
|
|
|
}
|
|
|
|
else if (ch == CH_NBSP) {
|
|
|
|
ch = ' ';
|
|
|
|
}
|
|
|
|
*s++ = ch;
|
|
|
|
length++;
|
|
|
|
if (nsnull != aIndexes) {
|
|
|
|
aIndexes[mappingInx++] = strInx;
|
|
|
|
strInx++;
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1998-10-03 04:48:19 +04:00
|
|
|
// Now remove trailing whitespace
|
|
|
|
PRIntn zapped = 0;
|
|
|
|
while (s > s0) {
|
|
|
|
if (s[-1] == ' ') {
|
|
|
|
s--;
|
|
|
|
length--;
|
|
|
|
zapped++;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (0 != zapped) {
|
|
|
|
nscoord spaceWidth;
|
|
|
|
aRenderingContext.GetWidth(' ', spaceWidth);
|
|
|
|
aNewWidth = aNewWidth - spaceWidth*zapped;
|
|
|
|
}
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
aStrLen = length;
|
|
|
|
return s0;
|
|
|
|
}
|
|
|
|
|
|
|
|
// XXX This clearly needs to be done by the container, *somehow*
|
|
|
|
#define CURSOR_COLOR NS_RGB(0,0,255)
|
|
|
|
static void
|
|
|
|
RenderSelectionCursor(nsIRenderingContext& aRenderingContext,
|
|
|
|
nscoord dx, nscoord dy, nscoord aHeight,
|
|
|
|
nscolor aCursorColor)
|
|
|
|
{
|
|
|
|
nsPoint pnts[4];
|
|
|
|
nscoord ox = aHeight / 4;
|
|
|
|
nscoord oy = ox;
|
|
|
|
nscoord x0 = dx;
|
|
|
|
nscoord y0 = dy + aHeight;
|
|
|
|
pnts[0].x = x0 - ox;
|
|
|
|
pnts[0].y = y0;
|
|
|
|
pnts[1].x = x0;
|
|
|
|
pnts[1].y = y0 - oy;
|
|
|
|
pnts[2].x = x0 + ox;
|
|
|
|
pnts[2].y = y0;
|
|
|
|
pnts[3].x = x0 - ox;
|
|
|
|
pnts[3].y = y0;
|
|
|
|
|
1998-09-09 20:18:40 +04:00
|
|
|
// Draw little blue triangle
|
|
|
|
aRenderingContext.SetColor(aCursorColor);
|
1998-09-09 02:34:40 +04:00
|
|
|
aRenderingContext.FillPolygon(pnts, 4);
|
|
|
|
}
|
|
|
|
|
|
|
|
// XXX letter-spacing
|
|
|
|
// XXX word-spacing
|
|
|
|
|
1998-09-17 04:18:25 +04:00
|
|
|
void
|
|
|
|
TextFrame::PaintTextDecorations(nsIRenderingContext& aRenderingContext,
|
|
|
|
PRUint8 aDecorations,
|
|
|
|
nscoord aX, nscoord aY, nscoord aWidth)
|
|
|
|
{
|
|
|
|
nsIFontMetrics* fontMetrics = aRenderingContext.GetFontMetrics();
|
|
|
|
if (nsnull != fontMetrics) {
|
|
|
|
nscolor overColor;
|
|
|
|
nscolor underColor;
|
|
|
|
nscolor strikeColor;
|
|
|
|
nsIStyleContext* context = mStyleContext;
|
|
|
|
PRUint8 decorMask = aDecorations;
|
|
|
|
|
|
|
|
NS_ADDREF(context);
|
|
|
|
do { // find decoration colors
|
|
|
|
const nsStyleText* styleText =
|
|
|
|
(const nsStyleText*)context->GetStyleData(eStyleStruct_Text);
|
|
|
|
if (decorMask & styleText->mTextDecoration) { // a decoration defined here
|
|
|
|
const nsStyleColor* styleColor =
|
|
|
|
(const nsStyleColor*)context->GetStyleData(eStyleStruct_Color);
|
|
|
|
if (NS_STYLE_TEXT_DECORATION_UNDERLINE & decorMask & styleText->mTextDecoration) {
|
|
|
|
underColor = styleColor->mColor;
|
|
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_UNDERLINE;
|
|
|
|
}
|
|
|
|
if (NS_STYLE_TEXT_DECORATION_OVERLINE & decorMask & styleText->mTextDecoration) {
|
|
|
|
overColor = styleColor->mColor;
|
|
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_OVERLINE;
|
|
|
|
}
|
|
|
|
if (NS_STYLE_TEXT_DECORATION_LINE_THROUGH & decorMask & styleText->mTextDecoration) {
|
|
|
|
strikeColor = styleColor->mColor;
|
|
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (0 != decorMask) {
|
|
|
|
nsIStyleContext* lastContext = context;
|
|
|
|
context = context->GetParent();
|
|
|
|
NS_RELEASE(lastContext);
|
|
|
|
}
|
|
|
|
} while ((nsnull != context) && (0 != decorMask));
|
|
|
|
NS_IF_RELEASE(context);
|
|
|
|
|
|
|
|
nscoord offset;
|
|
|
|
nscoord size;
|
|
|
|
nscoord baseline;
|
|
|
|
fontMetrics->GetMaxAscent(baseline);
|
|
|
|
if (aDecorations & (NS_FONT_DECORATION_OVERLINE | NS_FONT_DECORATION_UNDERLINE)) {
|
|
|
|
fontMetrics->GetUnderline(offset, size);
|
|
|
|
if (aDecorations & NS_FONT_DECORATION_OVERLINE) {
|
|
|
|
aRenderingContext.SetColor(overColor);
|
|
|
|
aRenderingContext.FillRect(aX, aY, aWidth, size);
|
|
|
|
}
|
|
|
|
if (aDecorations & NS_FONT_DECORATION_UNDERLINE) {
|
|
|
|
aRenderingContext.SetColor(underColor);
|
|
|
|
aRenderingContext.FillRect(aX, aY + baseline - offset, aWidth, size);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (aDecorations & NS_FONT_DECORATION_LINE_THROUGH) {
|
|
|
|
fontMetrics->GetStrikeout(offset, size);
|
|
|
|
aRenderingContext.SetColor(strikeColor);
|
|
|
|
aRenderingContext.FillRect(aX, aY + baseline - offset, aWidth, size);
|
|
|
|
}
|
|
|
|
NS_RELEASE(fontMetrics);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
void
|
|
|
|
TextFrame::PaintUnicodeText(nsIPresContext& aPresContext,
|
|
|
|
nsIRenderingContext& aRenderingContext,
|
|
|
|
nscolor aTextColor,
|
1998-09-17 04:18:25 +04:00
|
|
|
PRUint8 aDecorations,
|
1998-09-09 02:34:40 +04:00
|
|
|
nscolor aSelectionTextColor,
|
|
|
|
nscolor aSelectionBGColor,
|
|
|
|
nscoord dx, nscoord dy)
|
|
|
|
{
|
|
|
|
nsIPresShell* shell = aPresContext.GetShell();
|
|
|
|
nsIDocument* doc = shell->GetDocument();
|
|
|
|
PRBool displaySelection;
|
|
|
|
displaySelection = doc->GetDisplaySelection();
|
|
|
|
|
|
|
|
PRInt32 textLength;
|
|
|
|
PRInt32 indicies[500];
|
|
|
|
PRInt32* ip = indicies;
|
|
|
|
if (mContentLength > 500) {
|
|
|
|
ip = new PRInt32[mContentLength];
|
|
|
|
}
|
|
|
|
PRUnichar buf[500];
|
1998-10-03 04:48:19 +04:00
|
|
|
nscoord width = mRect.width;
|
|
|
|
PRUnichar* text = PrepareUnicodeText(aRenderingContext,
|
|
|
|
displaySelection ? ip : nsnull,
|
|
|
|
buf, 500, textLength, width);
|
1998-09-09 02:34:40 +04:00
|
|
|
if (0 != textLength) {
|
|
|
|
if (!displaySelection) {
|
|
|
|
// When there is no selection showing, use the fastest and
|
|
|
|
// simplest rendering approach
|
1998-10-03 04:48:19 +04:00
|
|
|
aRenderingContext.DrawString(text, textLength, dx, dy, width);
|
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, dx, dy, width);
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
SelectionInfo si;
|
|
|
|
ComputeSelectionInfo(aRenderingContext, doc, ip, textLength, si);
|
|
|
|
|
|
|
|
nscoord textWidth;
|
|
|
|
nsIFontMetrics * fm = aRenderingContext.GetFontMetrics();
|
|
|
|
if (si.mEmptySelection) {
|
1998-10-03 04:48:19 +04:00
|
|
|
aRenderingContext.DrawString(text, textLength, dx, dy, width);
|
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, dx, dy, width);
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text, PRUint32(si.mStartOffset), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
RenderSelectionCursor(aRenderingContext,
|
|
|
|
dx + textWidth, dy, mRect.height,
|
|
|
|
CURSOR_COLOR);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
nscoord x = dx;
|
|
|
|
|
|
|
|
if (0 != si.mStartOffset) {
|
|
|
|
// Render first (unselected) section
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text, PRUint32(si.mStartOffset), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
aRenderingContext.DrawString(text, si.mStartOffset,
|
|
|
|
x, dy, textWidth);
|
1998-09-17 04:18:25 +04:00
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, x, dy, textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
x += textWidth;
|
|
|
|
}
|
|
|
|
PRInt32 secondLen = si.mEndOffset - si.mStartOffset;
|
|
|
|
if (0 != secondLen) {
|
|
|
|
// Get the width of the second (selected) section
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text + si.mStartOffset, PRUint32(secondLen), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
// Render second (selected) section
|
|
|
|
aRenderingContext.SetColor(aSelectionBGColor);
|
|
|
|
aRenderingContext.FillRect(x, dy, textWidth, mRect.height);
|
|
|
|
aRenderingContext.SetColor(aSelectionTextColor);
|
|
|
|
aRenderingContext.DrawString(text + si.mStartOffset, secondLen,
|
|
|
|
x, dy, textWidth);
|
1998-09-17 04:18:25 +04:00
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, x, dy, textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
aRenderingContext.SetColor(aTextColor);
|
|
|
|
x += textWidth;
|
|
|
|
}
|
|
|
|
if (textLength != si.mEndOffset) {
|
|
|
|
PRInt32 thirdLen = textLength - si.mEndOffset;
|
|
|
|
|
|
|
|
// Render third (unselected) section
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text + si.mEndOffset, PRUint32(thirdLen), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
aRenderingContext.DrawString(text + si.mEndOffset,
|
|
|
|
thirdLen, x, dy, textWidth);
|
1998-09-17 04:18:25 +04:00
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, x, dy, textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
NS_RELEASE(fm);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Cleanup
|
|
|
|
if (text != buf) {
|
|
|
|
delete [] text;
|
|
|
|
}
|
|
|
|
if (ip != indicies) {
|
|
|
|
delete [] ip;
|
|
|
|
}
|
|
|
|
NS_RELEASE(shell);
|
|
|
|
NS_RELEASE(doc);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
TextFrame::PaintAsciiText(nsIPresContext& aPresContext,
|
|
|
|
nsIRenderingContext& aRenderingContext,
|
|
|
|
nscolor aTextColor,
|
1998-09-17 04:18:25 +04:00
|
|
|
PRUint8 aDecorations,
|
1998-09-09 02:34:40 +04:00
|
|
|
nscolor aSelectionTextColor,
|
|
|
|
nscolor aSelectionBGColor,
|
|
|
|
nscoord dx, nscoord dy)
|
|
|
|
{
|
|
|
|
nsIPresShell* shell = aPresContext.GetShell();
|
|
|
|
nsIDocument* doc = shell->GetDocument();
|
|
|
|
PRBool displaySelection;
|
|
|
|
displaySelection = doc->GetDisplaySelection();
|
|
|
|
|
|
|
|
PRInt32 textLength;
|
|
|
|
PRInt32 indicies[500];
|
|
|
|
PRInt32* ip = indicies;
|
|
|
|
if (mContentLength > 500) {
|
|
|
|
ip = new PRInt32[mContentLength];
|
|
|
|
}
|
|
|
|
char buf[500];
|
1998-10-03 04:48:19 +04:00
|
|
|
nscoord width = mRect.width;
|
|
|
|
char* text = PrepareAsciiText(aRenderingContext,
|
|
|
|
displaySelection ? ip : nsnull,
|
|
|
|
buf, 500, textLength, width);
|
1998-09-09 02:34:40 +04:00
|
|
|
if (0 != textLength) {
|
|
|
|
if (!displaySelection) {
|
|
|
|
// When there is no selection showing, use the fastest and
|
|
|
|
// simplest rendering approach
|
1998-10-03 04:48:19 +04:00
|
|
|
aRenderingContext.DrawString(text, textLength, dx, dy, width);
|
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, dx, dy, width);
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
SelectionInfo si;
|
|
|
|
ComputeSelectionInfo(aRenderingContext, doc, ip, textLength, si);
|
|
|
|
|
|
|
|
nscoord textWidth;
|
|
|
|
nsIFontMetrics * fm = aRenderingContext.GetFontMetrics();
|
|
|
|
if (si.mEmptySelection) {
|
1998-10-03 04:48:19 +04:00
|
|
|
aRenderingContext.DrawString(text, textLength, dx, dy, width);
|
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, dx, dy, width);
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text, PRUint32(si.mStartOffset), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
RenderSelectionCursor(aRenderingContext,
|
|
|
|
dx + textWidth, dy, mRect.height,
|
|
|
|
CURSOR_COLOR);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
nscoord x = dx;
|
|
|
|
|
|
|
|
if (0 != si.mStartOffset) {
|
|
|
|
// Render first (unselected) section
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text, PRUint32(si.mStartOffset), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
aRenderingContext.DrawString(text, si.mStartOffset,
|
|
|
|
x, dy, textWidth);
|
1998-09-17 04:18:25 +04:00
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, x, dy, textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
x += textWidth;
|
|
|
|
}
|
|
|
|
PRInt32 secondLen = si.mEndOffset - si.mStartOffset;
|
|
|
|
if (0 != secondLen) {
|
|
|
|
// Get the width of the second (selected) section
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text + si.mStartOffset, PRUint32(secondLen), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
// Render second (selected) section
|
|
|
|
aRenderingContext.SetColor(aSelectionBGColor);
|
|
|
|
aRenderingContext.FillRect(x, dy, textWidth, mRect.height);
|
|
|
|
aRenderingContext.SetColor(aSelectionTextColor);
|
|
|
|
aRenderingContext.DrawString(text + si.mStartOffset, secondLen,
|
|
|
|
x, dy, textWidth);
|
1998-09-17 04:18:25 +04:00
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, x, dy, textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
aRenderingContext.SetColor(aTextColor);
|
|
|
|
x += textWidth;
|
|
|
|
}
|
|
|
|
if (textLength != si.mEndOffset) {
|
|
|
|
PRInt32 thirdLen = textLength - si.mEndOffset;
|
|
|
|
|
|
|
|
// Render third (unselected) section
|
1998-10-02 05:12:39 +04:00
|
|
|
aRenderingContext.GetWidth(text + si.mEndOffset, PRUint32(thirdLen), textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
aRenderingContext.DrawString(text + si.mEndOffset,
|
|
|
|
thirdLen, x, dy, textWidth);
|
1998-09-17 04:18:25 +04:00
|
|
|
PaintTextDecorations(aRenderingContext, aDecorations, x, dy, textWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
NS_RELEASE(fm);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Cleanup
|
|
|
|
if (text != buf) {
|
|
|
|
delete [] text;
|
|
|
|
}
|
|
|
|
if (ip != indicies) {
|
|
|
|
delete [] ip;
|
|
|
|
}
|
|
|
|
NS_RELEASE(shell);
|
|
|
|
NS_RELEASE(doc);
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
1998-10-10 03:46:02 +04:00
|
|
|
TextFrame::FindTextRuns(nsLineLayout& aLineLayout)
|
1998-09-09 02:34:40 +04:00
|
|
|
{
|
|
|
|
if (nsnull == mPrevInFlow) {
|
|
|
|
aLineLayout.AddText(this);
|
|
|
|
}
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
1998-09-10 23:18:01 +04:00
|
|
|
//---------------------------------------------------
|
|
|
|
// Uses a binary search for find where the cursor falls in the line of text
|
|
|
|
// It also keeps track of the part of the string that has already been measured
|
|
|
|
// so it doesn't have to keep measuring the same text over and over
|
|
|
|
//
|
|
|
|
// Param "aBaseWidth" contains the width in twips of the portion
|
|
|
|
// of the text that has already been measured, and aBaseInx contains
|
|
|
|
// the index of the text that has already been measured.
|
|
|
|
//
|
|
|
|
// aTextWidth returns the (in twips) the length of the text that falls before the cursor
|
|
|
|
// aIndex contains the index of the text where the cursor falls
|
|
|
|
static PRBool
|
1998-10-02 05:12:39 +04:00
|
|
|
BinarySearchForPosition(nsIRenderingContext* acx,
|
1998-09-10 23:18:01 +04:00
|
|
|
PRUnichar* aText,
|
|
|
|
PRInt32 aBaseWidth,
|
|
|
|
PRInt32 aBaseInx,
|
|
|
|
PRInt32 aStartInx,
|
|
|
|
PRInt32 aEndInx,
|
|
|
|
PRInt32 aCursorPos,
|
|
|
|
PRInt32& aIndex,
|
|
|
|
PRInt32& aTextWidth)
|
|
|
|
{
|
|
|
|
PRInt32 range = aEndInx - aStartInx;
|
|
|
|
if (range == 1) {
|
|
|
|
aIndex = aStartInx + aBaseInx;
|
|
|
|
return PR_TRUE;
|
|
|
|
}
|
|
|
|
PRInt32 inx = aStartInx + (range / 2);
|
|
|
|
|
|
|
|
PRInt32 textWidth;
|
1998-10-02 05:12:39 +04:00
|
|
|
acx->GetWidth(aText, inx, textWidth);
|
1998-09-10 23:18:01 +04:00
|
|
|
|
|
|
|
PRInt32 fullWidth = aBaseWidth + textWidth;
|
|
|
|
if (fullWidth == aCursorPos) {
|
|
|
|
aIndex = inx;
|
|
|
|
return PR_TRUE;
|
|
|
|
} else if (aCursorPos < fullWidth) {
|
|
|
|
aTextWidth = aBaseWidth;
|
1998-10-02 05:12:39 +04:00
|
|
|
if (BinarySearchForPosition(acx, aText, aBaseWidth, aBaseInx, aStartInx, inx, aCursorPos, aIndex, aTextWidth)) {
|
1998-09-10 23:18:01 +04:00
|
|
|
return PR_TRUE;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
aTextWidth = fullWidth;
|
|
|
|
PRInt32 end = aEndInx - inx;
|
1998-10-02 05:12:39 +04:00
|
|
|
if (BinarySearchForPosition(acx, aText+inx, fullWidth, aBaseInx+inx, 0, end, aCursorPos, aIndex, aTextWidth)) {
|
1998-09-10 23:18:01 +04:00
|
|
|
return PR_TRUE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return PR_FALSE;
|
|
|
|
}
|
1998-09-09 02:34:40 +04:00
|
|
|
|
1998-09-10 23:18:01 +04:00
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
// Uses a binary search to find the position of the cursor in the text.
|
|
|
|
// The "indices array is used to map from the compressed text back to the
|
|
|
|
// un-compressed text, selection is based on the un-compressed text, the visual
|
|
|
|
// display of selection is based on the compressed text.
|
|
|
|
//---------------------------------------------------------------------------
|
1998-10-02 05:12:39 +04:00
|
|
|
NS_IMETHODIMP
|
1998-09-09 02:34:40 +04:00
|
|
|
TextFrame::GetPosition(nsIPresContext& aCX,
|
1998-10-02 05:12:39 +04:00
|
|
|
nsIRenderingContext * aRendContext,
|
1998-09-09 02:34:40 +04:00
|
|
|
nsGUIEvent* aEvent,
|
|
|
|
nsIFrame* aNewFrame,
|
1998-10-02 05:12:39 +04:00
|
|
|
PRUint32& aAcutalContentOffset,
|
|
|
|
PRInt32& aOffset)
|
1998-09-09 02:34:40 +04:00
|
|
|
{
|
1998-09-10 23:18:01 +04:00
|
|
|
const PRInt16 kNumIndices = 512;
|
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
// Get the rendered form of the text
|
|
|
|
PRInt32 textLength;
|
1998-09-10 23:18:01 +04:00
|
|
|
PRInt32 indicies[kNumIndices];
|
1998-09-09 02:34:40 +04:00
|
|
|
PRInt32* ip = indicies;
|
1998-09-10 23:18:01 +04:00
|
|
|
if (mContentLength > kNumIndices) {
|
|
|
|
ip = new PRInt32[mContentLength+1];
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
1998-09-10 23:18:01 +04:00
|
|
|
PRUnichar buf[kNumIndices];
|
1998-10-03 04:48:19 +04:00
|
|
|
nscoord width = 0;
|
|
|
|
PRUnichar* text = PrepareUnicodeText(*aRendContext,
|
|
|
|
ip, buf, kNumIndices, textLength,
|
|
|
|
width);
|
1998-09-10 23:18:01 +04:00
|
|
|
ip[mContentLength] = ip[mContentLength-1]+1;
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
// Find the font metrics for this text
|
|
|
|
nsIStyleContext* styleContext;
|
|
|
|
aNewFrame->GetStyleContext(&aCX, styleContext);
|
1998-09-10 23:18:01 +04:00
|
|
|
const nsStyleFont *font = (const nsStyleFont*) styleContext->GetStyleData(eStyleStruct_Font);
|
1998-09-09 02:34:40 +04:00
|
|
|
NS_RELEASE(styleContext);
|
1998-09-10 23:18:01 +04:00
|
|
|
|
1998-09-09 02:34:40 +04:00
|
|
|
nsIFontMetrics* fm = aCX.GetMetricsFor(font->mFont);
|
|
|
|
|
|
|
|
PRInt32 offset = mContentOffset + mContentLength;
|
1998-09-10 23:18:01 +04:00
|
|
|
|
|
|
|
PRInt32 index;
|
|
|
|
PRInt32 textWidth;
|
|
|
|
|
1998-10-02 05:12:39 +04:00
|
|
|
aRendContext->SetFont(fm);
|
|
|
|
|
|
|
|
PRBool found = BinarySearchForPosition(aRendContext, text, 0, 0, 0, PRInt32(textLength), PRInt32(aEvent->point.x), index, textWidth);
|
1998-09-10 23:18:01 +04:00
|
|
|
if (found) {
|
|
|
|
PRInt32 charWidth;
|
1998-10-02 05:12:39 +04:00
|
|
|
aRendContext->GetWidth(text[index], charWidth);
|
1998-09-10 23:18:01 +04:00
|
|
|
charWidth /= 2;
|
|
|
|
|
|
|
|
if (PRInt32(aEvent->point.x) > textWidth+charWidth) {
|
|
|
|
index++;
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
1998-09-10 23:18:01 +04:00
|
|
|
|
|
|
|
offset = 0;
|
|
|
|
PRInt32 j;
|
|
|
|
PRInt32* ptr = ip; // We will use pointer math to make it fast, instead of indexing into ip
|
|
|
|
for (j=0;j<=PRInt32(mContentLength);j++) {
|
|
|
|
if (*ptr == index+mContentOffset) {
|
|
|
|
offset = j+mContentOffset;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ptr++;
|
|
|
|
}
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
NS_RELEASE(fm);
|
|
|
|
if (ip != indicies) {
|
|
|
|
delete [] ip;
|
|
|
|
}
|
|
|
|
if (text != buf) {
|
|
|
|
delete [] text;
|
|
|
|
}
|
|
|
|
|
|
|
|
aAcutalContentOffset = ((TextFrame *)aNewFrame)->mContentOffset;
|
1998-10-02 05:12:39 +04:00
|
|
|
aOffset = offset;
|
|
|
|
|
|
|
|
return NS_OK;
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
1998-10-03 08:28:05 +04:00
|
|
|
TextFrame::Reflow(nsIPresContext& aPresContext,
|
|
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
nsReflowStatus& aStatus)
|
1998-09-09 02:34:40 +04:00
|
|
|
{
|
|
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
|
|
("enter TextFrame::Reflow: aMaxSize=%d,%d",
|
|
|
|
aReflowState.maxSize.width, aReflowState.maxSize.height));
|
|
|
|
|
|
|
|
// Get starting offset into the content
|
|
|
|
PRInt32 startingOffset = 0;
|
|
|
|
if (nsnull != mPrevInFlow) {
|
|
|
|
TextFrame* prev = (TextFrame*) mPrevInFlow;
|
|
|
|
startingOffset = prev->mContentOffset + prev->mContentLength;
|
|
|
|
}
|
|
|
|
|
|
|
|
const nsStyleFont* font =
|
|
|
|
(const nsStyleFont*)mStyleContext->GetStyleData(eStyleStruct_Font);
|
|
|
|
|
|
|
|
// Initialize mFlags (without destroying the TEXT_BLINK_ON bit) bits
|
|
|
|
// that are filled in by the reflow routines.
|
|
|
|
mFlags &= TEXT_BLINK_ON;
|
|
|
|
if (font->mFont.decorations & NS_STYLE_TEXT_DECORATION_BLINK) {
|
|
|
|
if (0 == (mFlags & TEXT_BLINK_ON)) {
|
|
|
|
mFlags |= TEXT_BLINK_ON;
|
|
|
|
gTextBlinker->AddFrame(this);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
const nsStyleText* text =
|
|
|
|
(const nsStyleText*)mStyleContext->GetStyleData(eStyleStruct_Text);
|
|
|
|
|
1998-10-03 08:28:05 +04:00
|
|
|
NS_ASSERTION(nsnull != aReflowState.lineLayout, "no line layout");
|
1998-09-09 02:34:40 +04:00
|
|
|
if (NS_STYLE_WHITESPACE_PRE == text->mWhiteSpace) {
|
|
|
|
// Use a specialized routine for pre-formatted text
|
1998-10-03 08:28:05 +04:00
|
|
|
aStatus = ReflowPre(*aReflowState.lineLayout, aMetrics, aReflowState,
|
|
|
|
*font, startingOffset);
|
1998-09-09 02:34:40 +04:00
|
|
|
} else {
|
|
|
|
// Use normal wrapping routine for non-pre text (this includes
|
|
|
|
// text that is not wrapping)
|
1998-10-03 08:28:05 +04:00
|
|
|
aStatus = ReflowNormal(*aReflowState.lineLayout, aMetrics, aReflowState,
|
|
|
|
*font, *text, startingOffset);
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
1998-10-03 08:28:05 +04:00
|
|
|
("exit TextFrame::Reflow: status=%x width=%d",
|
|
|
|
aStatus, aMetrics.width));
|
|
|
|
return NS_OK;
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
// Reflow normal text (stuff that doesn't have to deal with horizontal
|
|
|
|
// tabs). Normal text reflow may or may not wrap depending on the
|
|
|
|
// "whiteSpace" style property.
|
1998-10-03 08:28:05 +04:00
|
|
|
nsReflowStatus
|
1998-09-15 04:19:49 +04:00
|
|
|
TextFrame::ReflowNormal(nsLineLayout& aLineLayout,
|
1998-10-01 08:46:11 +04:00
|
|
|
nsHTMLReflowMetrics& aMetrics,
|
1998-10-02 08:10:00 +04:00
|
|
|
const nsHTMLReflowState& aReflowState,
|
1998-09-09 02:34:40 +04:00
|
|
|
const nsStyleFont& aFont,
|
|
|
|
const nsStyleText& aTextStyle,
|
|
|
|
PRInt32 aStartingOffset)
|
|
|
|
{
|
|
|
|
PRInt32 textLength;
|
|
|
|
const PRUnichar* cp = GetText(mContent, textLength);
|
|
|
|
cp += aStartingOffset;
|
|
|
|
const PRUnichar* end = cp + textLength - aStartingOffset;
|
|
|
|
const PRUnichar* cpStart = cp;
|
|
|
|
mContentOffset = aStartingOffset;
|
|
|
|
|
1998-09-23 06:32:17 +04:00
|
|
|
nsIFontMetrics* fm = aLineLayout.mPresContext.GetMetricsFor(aFont.mFont);
|
1998-09-09 02:34:40 +04:00
|
|
|
PRInt32 spaceWidth;
|
1998-10-02 05:12:39 +04:00
|
|
|
aReflowState.rendContext->SetFont(fm);
|
|
|
|
aReflowState.rendContext->GetWidth(' ', spaceWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
PRBool wrapping = PR_TRUE;
|
|
|
|
if (NS_STYLE_WHITESPACE_NORMAL != aTextStyle.mWhiteSpace) {
|
|
|
|
wrapping = PR_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Set whitespace skip flag
|
|
|
|
PRBool skipWhitespace = PR_FALSE;
|
|
|
|
if (aLineLayout.GetSkipLeadingWhiteSpace()) {
|
|
|
|
skipWhitespace = PR_TRUE;
|
|
|
|
mFlags |= TEXT_SKIP_LEADING_WS;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Try to fit as much of the text as possible. Note that if we are
|
|
|
|
// at the left margin then the first word always fits. In addition,
|
|
|
|
// we compute the size of the largest word that we contain. If we
|
|
|
|
// end up containing nothing (because there isn't enough space for
|
|
|
|
// the first word) then we still compute the size of that first
|
|
|
|
// non-fitting word.
|
|
|
|
|
|
|
|
// XXX XP_IS_SPACE must not return true for the unicode   character
|
|
|
|
// XXX what about &zwj and it's cousins?
|
|
|
|
nscoord x = 0;
|
|
|
|
nscoord maxWidth = aReflowState.maxSize.width;
|
|
|
|
nscoord maxWordWidth = 0;
|
1998-10-10 08:35:21 +04:00
|
|
|
nscoord prevMaxWordWidth = 0;
|
|
|
|
nscoord lastWordWidth;
|
1998-09-09 02:34:40 +04:00
|
|
|
const PRUnichar* lastWordEnd = cpStart;
|
1998-10-10 08:35:21 +04:00
|
|
|
const PRUnichar* lastWordStart = nsnull;
|
1998-09-09 02:34:40 +04:00
|
|
|
PRBool hasMultibyte = PR_FALSE;
|
|
|
|
PRBool endsInWhitespace = PR_FALSE;
|
|
|
|
|
|
|
|
while (cp < end) {
|
|
|
|
PRUnichar ch = *cp++;
|
|
|
|
PRBool isWhitespace;
|
|
|
|
nscoord width;
|
|
|
|
if (XP_IS_SPACE(ch)) {
|
|
|
|
// Compress whitespace down to a single whitespace
|
|
|
|
while (cp < end) {
|
|
|
|
ch = *cp;
|
|
|
|
if (XP_IS_SPACE(ch)) {
|
|
|
|
cp++;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (skipWhitespace) {
|
|
|
|
skipWhitespace = PR_FALSE;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
width = spaceWidth;
|
|
|
|
isWhitespace = PR_TRUE;
|
1998-10-10 08:35:21 +04:00
|
|
|
lastWordStart = cp;
|
1998-09-09 02:34:40 +04:00
|
|
|
} else {
|
|
|
|
// The character is not a space character. Find the end of the
|
|
|
|
// word and then measure it.
|
|
|
|
if (ch >= 128) {
|
|
|
|
hasMultibyte = PR_TRUE;
|
|
|
|
}
|
1998-10-10 08:35:21 +04:00
|
|
|
lastWordStart = cp - 1;
|
1998-09-09 02:34:40 +04:00
|
|
|
while (cp < end) {
|
|
|
|
ch = *cp;
|
1998-10-10 08:35:21 +04:00
|
|
|
if (ch >= 128) {
|
1998-09-09 02:34:40 +04:00
|
|
|
hasMultibyte = PR_TRUE;
|
|
|
|
}
|
|
|
|
if (!XP_IS_SPACE(ch)) {
|
|
|
|
cp++;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
1998-10-10 08:35:21 +04:00
|
|
|
aReflowState.rendContext->GetWidth(lastWordStart,
|
|
|
|
PRUint32(cp - lastWordStart),
|
|
|
|
width);
|
1998-09-09 02:34:40 +04:00
|
|
|
skipWhitespace = PR_FALSE;
|
|
|
|
isWhitespace = PR_FALSE;
|
1998-10-10 08:35:21 +04:00
|
|
|
lastWordWidth = width;
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
// Now that we have the end of the word or whitespace, see if it
|
|
|
|
// will fit.
|
|
|
|
if ((0 != x) && wrapping && (x + width > maxWidth)) {
|
|
|
|
// The word/whitespace will not fit.
|
|
|
|
cp = lastWordEnd;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
1998-10-10 08:35:21 +04:00
|
|
|
// The word/whitespace fits. Add it to the run of text.
|
1998-09-09 02:34:40 +04:00
|
|
|
x += width;
|
1998-10-10 08:35:21 +04:00
|
|
|
prevMaxWordWidth = maxWordWidth;
|
1998-09-09 02:34:40 +04:00
|
|
|
if (width > maxWordWidth) {
|
|
|
|
maxWordWidth = width;
|
|
|
|
}
|
|
|
|
lastWordEnd = cp;
|
|
|
|
endsInWhitespace = isWhitespace;
|
|
|
|
}
|
|
|
|
if (hasMultibyte) {
|
|
|
|
mFlags |= TEXT_HAS_MULTIBYTE;
|
|
|
|
}
|
1998-10-10 08:35:21 +04:00
|
|
|
|
|
|
|
// Post processing logic to deal with non-breakable-units (in
|
|
|
|
// english "words")
|
|
|
|
if (aLineLayout.InNonBreakingUnit()) {
|
|
|
|
// We are already in an nbu. This means a text frame prior to
|
|
|
|
// this one had a fragment of an nbu that is joined with this
|
|
|
|
// frame. It also means that the prior frame already found this
|
|
|
|
// frame and recorded it as part of the nbu.
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
|
|
ListTag(stdout);
|
|
|
|
printf(": in nbu; skipping\n");
|
|
|
|
#endif
|
|
|
|
aLineLayout.ForgetWordFrame(this);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// There is no currently active nbu. This frame may contain the
|
|
|
|
// start of one.
|
|
|
|
if (endsInWhitespace) {
|
|
|
|
// Nope, this frame doesn't start an nbu.
|
|
|
|
aLineLayout.ForgetWordFrames();
|
|
|
|
}
|
|
|
|
else if ((nsnull != lastWordStart) && wrapping && (cp == end)) {
|
|
|
|
// This frame does start an nbu. However, there is no point
|
|
|
|
// messing around with it if we are already out of room.
|
|
|
|
if ((0 == aLineLayout.GetPlacedFrames()) || (x <= maxWidth)) {
|
|
|
|
// There is room for this nbu fragment. It's possible that
|
|
|
|
// this nbu fragment is the end of the text-run. If it's not
|
|
|
|
// then we continue with the look-ahead processing.
|
|
|
|
nsIFrame* next = aLineLayout.FindNextText(this);
|
|
|
|
if (nsnull != next) {
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
|
|
nsAutoString tmp(lastWordStart, cp - lastWordStart);
|
|
|
|
ListTag(stdout);
|
|
|
|
printf(": start='");
|
|
|
|
fputs(tmp, stdout);
|
|
|
|
printf("' baseWidth=%d\n", lastWordWidth);
|
|
|
|
#endif
|
|
|
|
// Look ahead in the text-run and compute the final nbu
|
|
|
|
// width, taking into account any style changes and stopping
|
|
|
|
// at the first breakable point.
|
|
|
|
nscoord nbuWidth = ComputeTotalWordWidth(aLineLayout, aReflowState,
|
|
|
|
next, lastWordWidth);
|
|
|
|
if ((0 == aLineLayout.GetPlacedFrames()) ||
|
|
|
|
(x - lastWordWidth + nbuWidth <= maxWidth)) {
|
|
|
|
// The fully joined nbu has fit. Account for the joined
|
|
|
|
// nbu's affect on the max-element-size here (since the
|
|
|
|
// joined nbu is large than it's pieces, the right effect
|
|
|
|
// will occur)
|
|
|
|
if (nbuWidth > maxWordWidth) {
|
|
|
|
maxWordWidth = nbuWidth;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// The fully joined nbu won't fit. We need to reduce our
|
|
|
|
// size by the lastWordWidth.
|
|
|
|
x -= lastWordWidth;
|
|
|
|
maxWordWidth = prevMaxWordWidth;
|
|
|
|
cp = lastWordEnd = lastWordStart;
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
|
|
printf(" x=%d maxWordWidth=%d len=%d\n", x, maxWordWidth,
|
|
|
|
cp - cpStart);
|
|
|
|
#endif
|
|
|
|
aLineLayout.ForgetWordFrames();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
if (0 == x) {
|
|
|
|
// Since we collapsed into nothingness (all our whitespace
|
|
|
|
// is ignored) leave the aState->mSkipLeadingWhiteSpace
|
|
|
|
// flag alone since it doesn't want leading whitespace
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
aLineLayout.SetSkipLeadingWhiteSpace(endsInWhitespace);
|
|
|
|
}
|
|
|
|
|
|
|
|
// XXX too much code here: some of it isn't needed
|
|
|
|
// Now we know our content length
|
|
|
|
mContentLength = lastWordEnd - cpStart;
|
|
|
|
if (0 == mContentLength) {
|
|
|
|
if (cp == end) {
|
|
|
|
// The entire chunk of text was whitespace that we skipped over.
|
|
|
|
aMetrics.width = 0;
|
|
|
|
aMetrics.height = 0;
|
|
|
|
aMetrics.ascent = 0;
|
|
|
|
aMetrics.descent = 0;
|
|
|
|
mContentLength = end - cpStart;
|
|
|
|
if (nsnull != aMetrics.maxElementSize) {
|
|
|
|
aMetrics.maxElementSize->width = 0;
|
|
|
|
aMetrics.maxElementSize->height = 0;
|
|
|
|
}
|
|
|
|
NS_RELEASE(fm);
|
|
|
|
return NS_FRAME_COMPLETE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Set desired size to the computed size
|
|
|
|
aMetrics.width = x;
|
|
|
|
fm->GetHeight(aMetrics.height);
|
|
|
|
fm->GetMaxAscent(aMetrics.ascent);
|
|
|
|
fm->GetMaxDescent(aMetrics.descent);
|
|
|
|
if (!wrapping) {
|
|
|
|
maxWordWidth = x;
|
|
|
|
}
|
|
|
|
if (nsnull != aMetrics.maxElementSize) {
|
|
|
|
aMetrics.maxElementSize->width = maxWordWidth;
|
|
|
|
fm->GetHeight(aMetrics.maxElementSize->height);
|
|
|
|
}
|
|
|
|
NS_RELEASE(fm);
|
1998-10-12 22:44:58 +04:00
|
|
|
|
|
|
|
if (cp == end) {
|
|
|
|
return NS_FRAME_COMPLETE;
|
|
|
|
}
|
|
|
|
else if (cp == cpStart) {
|
|
|
|
return NS_INLINE_LINE_BREAK_BEFORE();
|
|
|
|
}
|
|
|
|
return NS_FRAME_NOT_COMPLETE;
|
1998-09-09 02:34:40 +04:00
|
|
|
}
|
|
|
|
|
1998-10-10 08:35:21 +04:00
|
|
|
nscoord
|
|
|
|
TextFrame::ComputeTotalWordWidth(nsLineLayout& aLineLayout,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
nsIFrame* aNextFrame,
|
|
|
|
nscoord aBaseWidth)
|
|
|
|
{
|
|
|
|
nscoord addedWidth = 0;
|
|
|
|
while (nsnull != aNextFrame) {
|
|
|
|
nsIFrame* frame = aNextFrame;
|
|
|
|
while (nsnull != frame) {
|
|
|
|
nsIContent* content = nsnull;
|
|
|
|
if ((NS_OK == frame->GetContent(content)) && (nsnull != content)) {
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
|
|
printf(" next textRun=");
|
|
|
|
frame->ListTag(stdout);
|
|
|
|
printf("\n");
|
|
|
|
#endif
|
|
|
|
nsITextContent* tc;
|
|
|
|
if (NS_OK == content->QueryInterface(kITextContentIID, (void**)&tc)) {
|
|
|
|
PRBool stop;
|
|
|
|
nscoord moreWidth = ComputeWordFragmentWidth(aLineLayout,
|
|
|
|
aReflowState,
|
|
|
|
frame, tc,
|
|
|
|
stop);
|
|
|
|
NS_RELEASE(tc);
|
|
|
|
NS_RELEASE(content);
|
|
|
|
addedWidth += moreWidth;
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
|
|
printf(" moreWidth=%d (addedWidth=%d) stop=%c\n", moreWidth,
|
|
|
|
addedWidth, stop?'T':'F');
|
|
|
|
#endif
|
|
|
|
if (stop) {
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// It claimed it was text but it doesn't implement the
|
|
|
|
// nsITextContent API. Therefore I don't know what to do with it
|
|
|
|
// and can't look inside it. Oh well.
|
|
|
|
NS_RELEASE(content);
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// XXX This assumes that a next-in-flow will follow it's
|
|
|
|
// prev-in-flow in the text-run. Maybe not a good assumption?
|
|
|
|
// What if the next-in-flow isn't actually part of the flow?
|
|
|
|
frame->GetNextInFlow(frame);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Move on to the next frame in the text-run
|
|
|
|
aNextFrame = aLineLayout.FindNextText(aNextFrame);
|
|
|
|
}
|
|
|
|
|
|
|
|
done:;
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
|
|
printf(" total word width=%d\n", aBaseWidth + addedWidth);
|
|
|
|
#endif
|
|
|
|
return aBaseWidth + addedWidth;
|
|
|
|
}
|
|
|
|
|
|
|
|
nscoord
|
|
|
|
TextFrame::ComputeWordFragmentWidth(nsLineLayout& aLineLayout,
|
|
|
|
const nsHTMLReflowState& aReflowState,
|
|
|
|
nsIFrame* aTextFrame,
|
|
|
|
nsITextContent* aText,
|
|
|
|
PRBool& aStop)
|
|
|
|
{
|
|
|
|
// Get a pointer and length count for the text
|
|
|
|
const PRUnichar* cp;
|
|
|
|
const PRUnichar* cp0;
|
|
|
|
const PRUnichar* end;
|
|
|
|
PRInt32 len;
|
|
|
|
if (NS_OK != aText->GetText(cp0, len)) {
|
|
|
|
aStop = PR_TRUE;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
cp = cp0;
|
|
|
|
end = cp0 + len;
|
|
|
|
|
|
|
|
// Count forward in the text until we hit a whitespace character or
|
|
|
|
// run out of text.
|
|
|
|
aStop = PR_FALSE;
|
|
|
|
while (cp < end) {
|
|
|
|
PRUnichar ch = *cp;
|
|
|
|
if (XP_IS_SPACE(ch)) {
|
|
|
|
aStop = PR_TRUE;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
cp++;
|
|
|
|
}
|
|
|
|
len = cp - cp0;
|
|
|
|
if (0 == len) {
|
|
|
|
// Don't bother measuring nothing
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
const nsStyleFont* font;
|
|
|
|
aTextFrame->GetStyleData(eStyleStruct_Font, (const nsStyleStruct*&) font);
|
|
|
|
if (nsnull != font) {
|
|
|
|
// Measure the piece of text. Note that we have to select the
|
|
|
|
// appropriate font into the text first because the rendering
|
|
|
|
// context has our font in it, not the font that aText is using.
|
|
|
|
nscoord width;
|
|
|
|
nsIRenderingContext& rc = *aReflowState.rendContext;
|
|
|
|
nsIFontMetrics* oldfm = rc.GetFontMetrics();
|
|
|
|
nsIFontMetrics* fm = aLineLayout.mPresContext.GetMetricsFor(font->mFont);
|
|
|
|
rc.SetFont(fm);
|
|
|
|
rc.GetWidth(cp0, len, width);
|
|
|
|
rc.SetFont(oldfm);
|
|
|
|
NS_RELEASE(oldfm);
|
|
|
|
NS_RELEASE(fm);
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
|
|
nsAutoString tmp(cp0, len);
|
|
|
|
printf(" fragment='");
|
|
|
|
fputs(tmp, stdout);
|
|
|
|
printf("' width=%d\n", width);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
// Remember the text frame for later so that we don't bother doing
|
|
|
|
// the word look ahead.
|
|
|
|
aLineLayout.RecordWordFrame(aTextFrame);
|
|
|
|
return width;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
1998-10-03 08:28:05 +04:00
|
|
|
nsReflowStatus
|
1998-09-15 04:19:49 +04:00
|
|
|
TextFrame::ReflowPre(nsLineLayout& aLineLayout,
|
1998-10-01 08:46:11 +04:00
|
|
|
nsHTMLReflowMetrics& aMetrics,
|
1998-10-02 08:10:00 +04:00
|
|
|
const nsHTMLReflowState& aReflowState,
|
1998-09-09 02:34:40 +04:00
|
|
|
const nsStyleFont& aFont,
|
|
|
|
PRInt32 aStartingOffset)
|
|
|
|
{
|
1998-10-03 08:28:05 +04:00
|
|
|
nsReflowStatus rs = NS_FRAME_COMPLETE;
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
PRInt32 textLength;
|
|
|
|
const PRUnichar* cp = GetText(mContent, textLength);
|
|
|
|
cp += aStartingOffset;
|
|
|
|
const PRUnichar* cpStart = cp;
|
|
|
|
const PRUnichar* end = cp + textLength - aStartingOffset;
|
|
|
|
|
|
|
|
mFlags |= TEXT_IS_PRE;
|
1998-09-23 06:32:17 +04:00
|
|
|
nsIFontMetrics* fm = aLineLayout.mPresContext.GetMetricsFor(aFont.mFont);
|
1998-09-09 02:34:40 +04:00
|
|
|
PRInt32 width = 0;
|
|
|
|
PRBool hasMultibyte = PR_FALSE;
|
|
|
|
PRUint16 tabs = 0;
|
|
|
|
PRUint16 col = aLineLayout.GetColumn();
|
|
|
|
mColumn = col;
|
1998-10-10 08:35:21 +04:00
|
|
|
nscoord spaceWidth, charWidth;
|
1998-10-02 05:12:39 +04:00
|
|
|
aReflowState.rendContext->SetFont(fm);
|
|
|
|
aReflowState.rendContext->GetWidth(' ', spaceWidth);
|
1998-09-09 02:34:40 +04:00
|
|
|
|
|
|
|
// XXX change this to measure a line at a time
|
|
|
|
while (cp < end) {
|
|
|
|
PRUnichar ch = *cp++;
|
|
|
|
if (ch == '\n') {
|
|
|
|
rs = (cp == end)
|
|
|
|
? NS_INLINE_LINE_BREAK_AFTER(NS_FRAME_COMPLETE)
|
|
|
|
: NS_INLINE_LINE_BREAK_AFTER(NS_FRAME_NOT_COMPLETE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (ch == '\t') {
|
|
|
|
// Advance to next tab stop
|
|
|
|
PRIntn spaces = 8 - (col & 7);
|
|
|
|
width += spaces * spaceWidth;
|
|
|
|
col += spaces;
|
|
|
|
tabs++;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (ch == CH_NBSP) {
|
|
|
|
width += spaceWidth;
|
|
|
|
col++;
|
|
|
|
continue;
|
|
|
|
}
|
1998-10-10 08:35:21 +04:00
|
|
|
aReflowState.rendContext->GetWidth(ch, charWidth);
|
|
|
|
width += charWidth;
|
|
|
|
if (ch > 128) {
|
1998-09-09 02:34:40 +04:00
|
|
|
hasMultibyte = PR_TRUE;
|
|
|
|
}
|
|
|
|
col++;
|
|
|
|
}
|
|
|
|
aLineLayout.SetColumn(col);
|
|
|
|
if (hasMultibyte) {
|
|
|
|
mFlags |= TEXT_HAS_MULTIBYTE;
|
|
|
|
}
|
|
|
|
TEXT_SET_TAB_COUNT(mFlags, tabs);
|
|
|
|
|
|
|
|
mContentOffset = aStartingOffset;
|
|
|
|
mContentLength = cp - cpStart;
|
|
|
|
aMetrics.width = width;
|
|
|
|
fm->GetHeight(aMetrics.height);
|
|
|
|
fm->GetMaxAscent(aMetrics.ascent);
|
|
|
|
fm->GetMaxDescent(aMetrics.descent);
|
|
|
|
if (nsnull != aMetrics.maxElementSize) {
|
|
|
|
aMetrics.maxElementSize->width = aMetrics.width;
|
|
|
|
aMetrics.maxElementSize->height = aMetrics.height;
|
|
|
|
}
|
|
|
|
NS_RELEASE(fm);
|
|
|
|
|
|
|
|
return rs;
|
|
|
|
}
|
|
|
|
|
|
|
|
// XXX there is a copy of this in nsGenericDomDataNode.cpp
|
|
|
|
static void
|
|
|
|
ToCString(const PRUnichar* cp, PRInt32 aLen, nsString& aBuf)
|
|
|
|
{
|
|
|
|
const PRUnichar* end = cp + aLen;
|
|
|
|
while (cp < end) {
|
|
|
|
PRUnichar ch = *cp++;
|
|
|
|
if (ch == '\r') {
|
|
|
|
aBuf.Append("\\r");
|
|
|
|
} else if (ch == '\n') {
|
|
|
|
aBuf.Append("\\n");
|
|
|
|
} else if (ch == '\t') {
|
|
|
|
aBuf.Append("\\t");
|
|
|
|
} else if ((ch < ' ') || (ch >= 127)) {
|
|
|
|
aBuf.Append("\\0");
|
|
|
|
aBuf.Append((PRInt32)ch, 8);
|
|
|
|
} else {
|
|
|
|
aBuf.Append(ch);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
|
|
TextFrame::ListTag(FILE* out) const
|
|
|
|
{
|
1998-10-09 00:35:16 +04:00
|
|
|
fprintf(out, "Text(%d)@%p", ContentIndexInContainer(this), this);
|
1998-09-09 02:34:40 +04:00
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
|
|
TextFrame::List(FILE* out, PRInt32 aIndent) const
|
|
|
|
{
|
|
|
|
PRInt32 i;
|
|
|
|
for (i = aIndent; --i >= 0; ) fputs(" ", out);
|
|
|
|
|
|
|
|
// Output the tag
|
|
|
|
ListTag(out);
|
|
|
|
nsIView* view;
|
|
|
|
GetView(view);
|
|
|
|
if (nsnull != view) {
|
|
|
|
fprintf(out, " [view=%p]", view);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Output the first/last content offset and prev/next in flow info
|
|
|
|
// XXX inefficient (especially for really large strings)
|
|
|
|
PRInt32 textLength;
|
|
|
|
const PRUnichar* cp = GetText(mContent, textLength);
|
|
|
|
|
|
|
|
PRBool isComplete = (mContentOffset + mContentLength) == textLength;
|
|
|
|
fprintf(out, "[%d,%d,%c] ",
|
|
|
|
mContentOffset, mContentOffset+mContentLength-1,
|
|
|
|
isComplete ? 'T':'F');
|
|
|
|
if (nsnull != mPrevInFlow) {
|
|
|
|
fprintf(out, "prev-in-flow=%p ", mPrevInFlow);
|
|
|
|
}
|
|
|
|
if (nsnull != mNextInFlow) {
|
|
|
|
fprintf(out, "next-in-flow=%p ", mNextInFlow);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Output the rect and state
|
|
|
|
out << mRect;
|
|
|
|
if (0 != mState) {
|
|
|
|
fprintf(out, " [state=%08x]", mState);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Output the text
|
|
|
|
fputs("<\n", out);
|
|
|
|
aIndent++;
|
|
|
|
|
|
|
|
for (i = aIndent; --i >= 0; ) fputs(" ", out);
|
|
|
|
fputs("\"", out);
|
|
|
|
nsAutoString tmp;
|
|
|
|
ToCString(cp, mContentLength, tmp);
|
|
|
|
fputs(tmp, out);
|
|
|
|
fputs("\"\n", out);
|
|
|
|
|
|
|
|
aIndent--;
|
|
|
|
for (i = aIndent; --i >= 0; ) fputs(" ", out);
|
|
|
|
fputs(">\n", out);
|
|
|
|
|
|
|
|
return NS_OK;
|
|
|
|
}
|