mozilla
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gecko-dev
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Change the implementation of text zoom so that the zooming happens in the style system. This causes 'em' and similar units to be zoomed as well. Also scale physical / pixel 'line-height' values. b=41847 r=attinasi sr=hyatt

This commit is contained in:
dbaron%fas.harvard.edu 2002-02-16 16:24:25 +00:00
Родитель 59892aa65e
Коммит 8e0def5119
16 изменённых файлов: 159 добавлений и 96 удалений
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81
content/base/src/nsRuleNode.cpp
Просмотреть файл

@ -1583,6 +1583,16 @@ nsRuleNode::WalkRuleTree(const nsStyleStructID aSID,
return res;
}
static nscoord
ZoomFont(nsIPresContext* aPresContext, nscoord aInSize)
{
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
float textZoom;
dc->GetTextZoom(textZoom);
return nscoord(aInSize * textZoom);
}
const nsStyleStruct*
nsRuleNode::SetDefaultOnRoot(const nsStyleStructID aSID, nsIStyleContext* aContext)
{
@ -1592,6 +1602,8 @@ nsRuleNode::SetDefaultOnRoot(const nsStyleStructID aSID, nsIStyleContext* aConte
const nsFont* defaultFont;
mPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID, &defaultFont);
nsStyleFont* fontData = new (mPresContext) nsStyleFont(*defaultFont);
fontData->mSize = fontData->mFont.size =
ZoomFont(mPresContext, fontData->mFont.size);
aContext->SetStyle(eStyleStruct_Font, *fontData);
return fontData;
}
@ -1766,7 +1778,7 @@ SetFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
nscoord aMinFontSize, PRBool aUseDocumentFonts, PRBool aChromeOverride,
PRBool aIsGeneric, const nsCSSFont& aFontData,
const nsFont& aDefaultFont, const nsStyleFont* aParentFont,
nsStyleFont* aFont, PRBool& aInherited)
nsStyleFont* aFont, PRBool aZoom, PRBool& aInherited)
{
const nsFont* defaultVariableFont;
const nsFont* defaultFixedFont;
@ -1994,13 +2006,14 @@ SetFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
}
// font-size: enum, length, percent, inherit
PRBool zoom = aZoom;
if (eCSSUnit_Enumerated == aFontData.mSize.GetUnit()) {
PRInt32 value = aFontData.mSize.GetIntValue();
PRInt32 scaler;
aPresContext->GetFontScaler(&scaler);
float scaleFactor = nsStyleUtil::GetScalingFactor(scaler);
aInherited = PR_TRUE;
zoom = PR_TRUE;
if ((NS_STYLE_FONT_SIZE_XXSMALL <= value) &&
(value <= NS_STYLE_FONT_SIZE_XXLARGE)) {
aFont->mSize = nsStyleUtil::CalcFontPointSize(value, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
@ -2009,31 +2022,58 @@ SetFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
// <font size="7"> is not specified in CSS, so we don't use eFontSize_CSS.
aFont->mSize = nsStyleUtil::CalcFontPointSize(value, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext);
}
else if (NS_STYLE_FONT_SIZE_LARGER == value) {
PRInt32 index = nsStyleUtil::FindNextLargerFontSize(aParentFont->mSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord largerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MAX(largerSize, aParentFont->mSize);
}
else if (NS_STYLE_FONT_SIZE_SMALLER == value) {
PRInt32 index = nsStyleUtil::FindNextSmallerFontSize(aParentFont->mSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord smallerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MIN(smallerSize, aParentFont->mSize);
else if (NS_STYLE_FONT_SIZE_LARGER == value ||
NS_STYLE_FONT_SIZE_SMALLER == value) {
aInherited = PR_TRUE;
// Un-zoom so we use the tables correctly. We'll then rezoom due
// to the |zoom = PR_TRUE| above.
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
float textZoom;
dc->GetTextZoom(textZoom);
nscoord parentSize = nscoord(aParentFont->mSize / textZoom);
if (NS_STYLE_FONT_SIZE_LARGER == value) {
PRInt32 index = nsStyleUtil::FindNextLargerFontSize(parentSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord largerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MAX(largerSize, aParentFont->mSize);
} else {
PRInt32 index = nsStyleUtil::FindNextSmallerFontSize(parentSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord smallerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MIN(smallerSize, aParentFont->mSize);
}
} else {
NS_NOTREACHED("unexpected value");
}
}
else if (aFontData.mSize.IsLengthUnit()) {
aFont->mSize = CalcLength(aFontData.mSize, &aParentFont->mFont, nsnull, aPresContext, aInherited);
zoom = aFontData.mSize.IsFixedLengthUnit() ||
aFontData.mSize.GetUnit() == eCSSUnit_Pixel;
}
else if (eCSSUnit_Percent == aFontData.mSize.GetUnit()) {
aInherited = PR_TRUE;
aFont->mSize = (nscoord)((float)(aParentFont->mSize) * aFontData.mSize.GetPercentValue());
zoom = PR_FALSE;
}
else if (eCSSUnit_Inherit == aFontData.mSize.GetUnit()) {
aInherited = PR_TRUE;
aFont->mSize = aParentFont->mSize;
zoom = PR_FALSE;
}
else if (eCSSUnit_Initial == aFontData.mSize.GetUnit()) {
aFont->mSize = aDefaultFont.size;
zoom = PR_TRUE;
}
// We want to zoom the cascaded size so that em-based measurements,
// line-heights, etc., work.
if (zoom)
aFont->mSize = ZoomFont(aPresContext, aFont->mSize);
// enforce the user' specified minimum font-size on the value that we expose
if (aChromeOverride) {
// the chrome is unconstrained, it always uses our cascading size
@ -2067,7 +2107,7 @@ static void
SetGenericFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
const nsCSSFont& aFontData, PRUint8 aGenericFontID,
nscoord aMinFontSize, PRBool aUseDocumentFonts,
PRBool aChromeOverride, nsStyleFont* aFont)
PRBool aChromeOverride, nsStyleFont* aFont, PRBool aZoom)
{
// walk up the contexts until a context with the desired generic font
nsAutoVoidArray contextPath;
@ -2135,7 +2175,7 @@ SetGenericFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
SetFont(aPresContext, context, aMinFontSize,
aUseDocumentFonts, aChromeOverride, PR_TRUE,
fontData, *defaultFont, &parentFont, aFont, dummy);
fontData, *defaultFont, &parentFont, aFont, aZoom, dummy);
// XXX Not sure if we need to do this here
// If we have a post-resolve callback, handle that now.
@ -2152,7 +2192,7 @@ SetGenericFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
// can just compute the delta from the parent.
SetFont(aPresContext, aContext, aMinFontSize,
aUseDocumentFonts, aChromeOverride, PR_TRUE,
aFontData, *defaultFont, &parentFont, aFont, dummy);
aFontData, *defaultFont, &parentFont, aFont, aZoom, dummy);
}
const nsStyleStruct*
@ -2185,10 +2225,12 @@ nsRuleNode::ComputeFontData(nsStyleStruct* aStartStruct, const nsCSSStruct& aDat
}
}
PRBool zoom = PR_FALSE;
const nsFont* defaultFont;
if (!font) {
mPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID, &defaultFont);
font = new (mPresContext) nsStyleFont(*defaultFont);
zoom = PR_TRUE;
}
if (!parentFont)
parentFont = font;
@ -2257,14 +2299,14 @@ nsRuleNode::ComputeFontData(nsStyleStruct* aStartStruct, const nsCSSStruct& aDat
mPresContext->GetDefaultFont(generic, &defaultFont);
SetFont(mPresContext, aContext, minimumFontSize,
useDocumentFonts, chromeOverride, PR_FALSE,
fontData, *defaultFont, parentFont, font, inherited);
fontData, *defaultFont, parentFont, font, zoom, inherited);
}
else {
// re-calculate the font as a generic font
inherited = PR_TRUE;
SetGenericFont(mPresContext, aContext, fontData,
generic, minimumFontSize, useDocumentFonts,
chromeOverride, font);
chromeOverride, font, zoom);
}
// Set our generic font's bit to inform our descendants
font->mFlags &= ~NS_STYLE_FONT_FACE_MASK;
@ -2332,10 +2374,15 @@ nsRuleNode::ComputeTextData(nsStyleStruct* aStartStruct, const nsCSSStruct& aDat
aContext->GetStyleData(eStyleStruct_Font));
text->mLineHeight.SetCoordValue((nscoord)((float)(font->mSize) *
textData.mLineHeight.GetPercentValue()));
} else
} else {
SetCoord(textData.mLineHeight, text->mLineHeight, parentText->mLineHeight,
SETCOORD_LH | SETCOORD_FACTOR | SETCOORD_NORMAL,
aContext, mPresContext, inherited);
if (textData.mLineHeight.IsFixedLengthUnit() ||
textData.mLineHeight.GetUnit() == eCSSUnit_Pixel)
text->mLineHeight.SetCoordValue(
ZoomFont(mPresContext, text->mLineHeight.GetCoordValue()));
}
// text-align: enum, string, inherit

10
content/shared/src/nsStyleStruct.cpp
Просмотреть файл

@ -221,16 +221,16 @@ nsStyleFont::nsStyleFont()
nsStyleFont::nsStyleFont(const nsFont& aFont)
: mFlags(NS_STYLE_FONT_DEFAULT),
mFont(aFont)
mFont(aFont),
mSize(aFont.size)
{
mSize = aFont.size;
}
nsStyleFont::nsStyleFont(const nsStyleFont& aSrc)
:mFont(aSrc.mFont)
: mFlags(aSrc.mFlags),
mFont(aSrc.mFont),
mSize(aSrc.mSize)
{
mSize = aSrc.mSize;
mFlags = aSrc.mFlags;
}
void*

5
gfx/public/nsIDeviceContext.h
Просмотреть файл

@ -354,8 +354,9 @@ public:
NS_IMETHOD SetZoom(float aZoom) = 0;
NS_IMETHOD GetZoom(float &aZoom) const = 0;
//get and set the text zoom value used for display-time
//scaling. default is 1.0 (no zoom)
//get and set the text zoom value used for display-time scaling.
//default is 1.0 (no zoom). The device context doesn't do anything
//with this value. It's merely a convenient place to store it.
NS_IMETHOD SetTextZoom(float aTextZoom) = 0;
NS_IMETHOD GetTextZoom(float &aTextZoom) const = 0;

4
gfx/src/beos/nsFontMetricsBeOS.cpp
Просмотреть файл

@ -138,11 +138,9 @@ NS_IMETHODIMP nsFontMetricsBeOS::Init(const nsFont& aFont, nsIAtom* aLangGroup,
float app2dev, app2twip;
aContext->GetAppUnitsToDevUnits(app2dev);
aContext->GetDevUnitsToTwips(app2twip);
float textZoom = 1.0;
aContext->GetTextZoom(textZoom);
app2twip *= app2dev;
float rounded = ((float)NSIntPointsToTwips(NSTwipsToFloorIntPoints(nscoord(mFont->size * app2twip * textZoom)))) / app2twip;
float rounded = ((float)NSIntPointsToTwips(NSTwipsToFloorIntPoints(nscoord(mFont->size * app2twip)))) / app2twip;
// process specified fonts from first item of the array.

4
gfx/src/gtk/nsFontMetricsGTK.cpp
Просмотреть файл

@ -1253,9 +1253,7 @@ NS_IMETHODIMP nsFontMetricsGTK::Init(const nsFont& aFont, nsIAtom* aLangGroup,
float app2dev;
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
float textZoom = 1.0;
mDeviceContext->GetTextZoom(textZoom);
mPixelSize = NSToIntRound(app2dev * textZoom * mFont->size);
mPixelSize = NSToIntRound(app2dev * mFont->size);
mStretchIndex = 4; // normal
mStyleIndex = mFont->style;

4
gfx/src/mac/nsFontUtils.cpp
Просмотреть файл

@ -109,10 +109,6 @@ nsFontUtils::GetNativeTextStyle(nsIFontMetrics& inMetrics,
RGBColor black = {0};
float textZoom = 1.0;
inDevContext.GetTextZoom(textZoom);
textSize *= textZoom;
outStyle.tsFont = (short)fontNum;
outStyle.tsFace = textFace;
outStyle.tsSize = textSize;

8
gfx/src/mac/nsUnicodeRenderingToolkit.cpp
Просмотреть файл

@ -1109,10 +1109,8 @@ nsUnicodeRenderingToolkit::GetTextSegmentDimensions(
{
const nsFont *font;
mGS->mFontMetrics->GetFont(font);
float textZoom;
mContext->GetTextZoom(textZoom);
fallbackDone = ATSUIFallbackGetDimensions(aString, segDim, fontNum,
font->size * textZoom,
font->size,
(font->weight > NS_FONT_WEIGHT_NORMAL),
((NS_FONT_STYLE_ITALIC == font->style) ||
(NS_FONT_STYLE_OBLIQUE == font->style)),
@ -1271,10 +1269,8 @@ nsresult nsUnicodeRenderingToolkit :: DrawTextSegment(
if(! fallbackDone) {
const nsFont *font;
mGS->mFontMetrics->GetFont(font);
float textZoom;
mContext->GetTextZoom(textZoom);
fallbackDone = ATSUIFallbackDrawChar(aString, x, y, thisWidth, fontNum,
font->size * textZoom,
font->size,
(font->weight > NS_FONT_WEIGHT_NORMAL),
((NS_FONT_STYLE_ITALIC == font->style) || (NS_FONT_STYLE_OBLIQUE == font->style)),
mGS->mColor );

10
gfx/src/nsDeviceContext.cpp
Просмотреть файл

@ -325,10 +325,7 @@ NS_IMETHODIMP DeviceContextImpl::GetMetricsFor(const nsFont& aFont, nsIFontMetri
NS_IMETHODIMP DeviceContextImpl::SetZoom(float aZoom)
{
if (mZoom != aZoom) {
mZoom = aZoom;
FlushFontCache();
}
mZoom = aZoom;
return NS_OK;
}
@ -340,10 +337,7 @@ NS_IMETHODIMP DeviceContextImpl::GetZoom(float &aZoom) const
NS_IMETHODIMP DeviceContextImpl::SetTextZoom(float aTextZoom)
{
if (mTextZoom != aTextZoom) {
mTextZoom = aTextZoom;
FlushFontCache();
}
mTextZoom = aTextZoom;
return NS_OK;
}

8
gfx/src/os2/nsFontMetricsOS2.cpp
Просмотреть файл

@ -552,9 +552,7 @@ static FONTMETRICS* getMetrics( long &lFonts, PCSZ facename, HPS hps)
void
nsFontMetricsOS2::SetFontHandle( HPS aPS, nsFontOS2* aFont )
{
float textZoom = 1.0;
mDeviceContext->GetTextZoom( textZoom );
int points = NSTwipsToIntPoints( mFont.size * textZoom );
int points = NSTwipsToIntPoints( mFont.size );
FATTRS* fattrs = &(aFont->fattrs);
if( fattrs->fsFontUse == 0 ) // if image font
@ -652,9 +650,9 @@ nsFontMetricsOS2::SetFontHandle( HPS aPS, nsFontOS2* aFont )
if( fattrs->fsFontUse == 0 ) /* if image font */
fHeight = points * gDPI / 72;
else
fHeight = mFont.size * app2dev * textZoom * gDPI / nsFontMetricsOS2::gSystemRes;
fHeight = mFont.size * app2dev * gDPI / nsFontMetricsOS2::gSystemRes;
else
fHeight = mFont.size * app2dev * textZoom;
fHeight = mFont.size * app2dev;
long lFloor = NSToIntFloor( fHeight );
aFont->charbox.cx = MAKEFIXED( lFloor, (fHeight - (float)lFloor) * 65536.0f );

5
gfx/src/photon/nsFontMetricsPh.cpp
Просмотреть файл

@ -156,8 +156,6 @@ NS_IMETHODIMP nsFontMetricsPh::Init ( const nsFont& aFont, nsIAtom* aLangGroup,
float app2dev;
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
float textZoom = 1.0;
mDeviceContext->GetTextZoom(textZoom);
result = aContext->FirstExistingFont(aFont, firstFace);
@ -202,9 +200,8 @@ NS_IMETHODIMP nsFontMetricsPh::Init ( const nsFont& aFont, nsIAtom* aLangGroup,
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
mDeviceContext->GetCanonicalPixelScale(scale);
mDeviceContext->GetTextZoom(textZoom);
PRInt32 sizePoints = NSToIntRound(app2dev * textZoom * mFont->size * 0.8);
PRInt32 sizePoints = NSToIntRound(app2dev * mFont->size * 0.8);
char NSFontSuffix[5];
char NSFullFontName[MAX_FONT_TAG];

4
gfx/src/qt/nsFontMetricsQT.cpp
Просмотреть файл

@ -780,11 +780,9 @@ NS_IMETHODIMP nsFontMetricsQT::Init(const nsFont &aFont,nsIAtom *aLangGroup,
mDeviceContext = aContext;
float a2d;
float textZoom = 1.0;
aContext->GetAppUnitsToDevUnits(a2d);
aContext->GetTextZoom(textZoom);
mPixelSize = NSToIntRound(a2d * textZoom * mFont->size);
mPixelSize = NSToIntRound(a2d * mFont->size);
if (mFont->style == NS_FONT_STYLE_NORMAL) {
#if (QT_VERSION >= 230)
if (use_qt_xft())

14
gfx/src/windows/nsFontMetricsWin.cpp
Просмотреть файл

@ -483,14 +483,10 @@ nsFontMetricsWin::Destroy()
void
nsFontMetricsWin::FillLogFont(LOGFONT* logFont, PRInt32 aWeight,
PRBool aSizeOnly, PRBool aSkipZoom)
PRBool aSizeOnly)
{
float app2dev, app2twip, scale;
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
float textZoom = 1.0;
if (!aSkipZoom) {
mDeviceContext->GetTextZoom(textZoom);
}
if (nsDeviceContextWin::gRound) {
mDeviceContext->GetDevUnitsToTwips(app2twip);
mDeviceContext->GetCanonicalPixelScale(scale);
@ -503,13 +499,13 @@ nsFontMetricsWin::FillLogFont(LOGFONT* logFont, PRInt32 aWeight,
// round font size off to floor point size to be windows compatible
// this is proper (windows) rounding
logFont->lfHeight = - NSToIntRound(rounded * app2dev * textZoom);
logFont->lfHeight = - NSToIntRound(rounded * app2dev);
// this floor rounding is to make ours compatible with Nav 4.0
//logFont->lfHeight = - LONG(rounded * app2dev * textZoom);
//logFont->lfHeight = - LONG(rounded * app2dev);
}
else {
logFont->lfHeight = - NSToIntRound(mFont.size * app2dev * textZoom);
logFont->lfHeight = - NSToIntRound(mFont.size * app2dev);
}
// Quick return if we came here just to compute the font size
@ -1962,7 +1958,7 @@ nsFontMetricsWin::CreateFontAdjustHandle(HDC aDC, LOGFONT* aLogFont)
nscoord size72 = NSIntPointsToTwips(72); // large value improves accuracy
mFont.size = size72;
nscoord baselfHeight = aLogFont->lfHeight;
FillLogFont(aLogFont, dummy, PR_TRUE, PR_TRUE);
FillLogFont(aLogFont, dummy, PR_TRUE);
HFONT hfont = ::CreateFontIndirect(aLogFont);
mFont.size = baseSize;

2
gfx/src/windows/nsFontMetricsWin.h
Просмотреть файл

@ -293,7 +293,7 @@ protected:
nsresult RealizeFont();
void FillLogFont(LOGFONT* aLogFont, PRInt32 aWeight,
PRBool aSizeOnly=PR_FALSE, PRBool aSkipZoom=PR_FALSE);
PRBool aSizeOnly=PR_FALSE);
static PLHashTable* InitializeFamilyNames(void);
nsDeviceContextWin *mDeviceContext;

5
gfx/src/xlib/nsFontMetricsXlib.cpp
Просмотреть файл

@ -1170,10 +1170,7 @@ nsFontMetricsXlib::Init(const nsFont& aFont, nsIAtom* aLangGroup,
float app2dev;
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
float textZoom = 1.0;
mDeviceContext->GetTextZoom(textZoom);
mPixelSize = NSToIntRound(app2dev * textZoom * mFont->size);
mPixelSize = NSToIntRound(app2dev * mFont->size);
mStretchIndex = 4; // Normal
mStyleIndex = mFont->style;

81
layout/style/nsRuleNode.cpp
Просмотреть файл

@ -1583,6 +1583,16 @@ nsRuleNode::WalkRuleTree(const nsStyleStructID aSID,
return res;
}
static nscoord
ZoomFont(nsIPresContext* aPresContext, nscoord aInSize)
{
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
float textZoom;
dc->GetTextZoom(textZoom);
return nscoord(aInSize * textZoom);
}
const nsStyleStruct*
nsRuleNode::SetDefaultOnRoot(const nsStyleStructID aSID, nsIStyleContext* aContext)
{
@ -1592,6 +1602,8 @@ nsRuleNode::SetDefaultOnRoot(const nsStyleStructID aSID, nsIStyleContext* aConte
const nsFont* defaultFont;
mPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID, &defaultFont);
nsStyleFont* fontData = new (mPresContext) nsStyleFont(*defaultFont);
fontData->mSize = fontData->mFont.size =
ZoomFont(mPresContext, fontData->mFont.size);
aContext->SetStyle(eStyleStruct_Font, *fontData);
return fontData;
}
@ -1766,7 +1778,7 @@ SetFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
nscoord aMinFontSize, PRBool aUseDocumentFonts, PRBool aChromeOverride,
PRBool aIsGeneric, const nsCSSFont& aFontData,
const nsFont& aDefaultFont, const nsStyleFont* aParentFont,
nsStyleFont* aFont, PRBool& aInherited)
nsStyleFont* aFont, PRBool aZoom, PRBool& aInherited)
{
const nsFont* defaultVariableFont;
const nsFont* defaultFixedFont;
@ -1994,13 +2006,14 @@ SetFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
}
// font-size: enum, length, percent, inherit
PRBool zoom = aZoom;
if (eCSSUnit_Enumerated == aFontData.mSize.GetUnit()) {
PRInt32 value = aFontData.mSize.GetIntValue();
PRInt32 scaler;
aPresContext->GetFontScaler(&scaler);
float scaleFactor = nsStyleUtil::GetScalingFactor(scaler);
aInherited = PR_TRUE;
zoom = PR_TRUE;
if ((NS_STYLE_FONT_SIZE_XXSMALL <= value) &&
(value <= NS_STYLE_FONT_SIZE_XXLARGE)) {
aFont->mSize = nsStyleUtil::CalcFontPointSize(value, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
@ -2009,31 +2022,58 @@ SetFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
// <font size="7"> is not specified in CSS, so we don't use eFontSize_CSS.
aFont->mSize = nsStyleUtil::CalcFontPointSize(value, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext);
}
else if (NS_STYLE_FONT_SIZE_LARGER == value) {
PRInt32 index = nsStyleUtil::FindNextLargerFontSize(aParentFont->mSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord largerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MAX(largerSize, aParentFont->mSize);
}
else if (NS_STYLE_FONT_SIZE_SMALLER == value) {
PRInt32 index = nsStyleUtil::FindNextSmallerFontSize(aParentFont->mSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord smallerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MIN(smallerSize, aParentFont->mSize);
else if (NS_STYLE_FONT_SIZE_LARGER == value ||
NS_STYLE_FONT_SIZE_SMALLER == value) {
aInherited = PR_TRUE;
// Un-zoom so we use the tables correctly. We'll then rezoom due
// to the |zoom = PR_TRUE| above.
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
float textZoom;
dc->GetTextZoom(textZoom);
nscoord parentSize = nscoord(aParentFont->mSize / textZoom);
if (NS_STYLE_FONT_SIZE_LARGER == value) {
PRInt32 index = nsStyleUtil::FindNextLargerFontSize(parentSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord largerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MAX(largerSize, aParentFont->mSize);
} else {
PRInt32 index = nsStyleUtil::FindNextSmallerFontSize(parentSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord smallerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MIN(smallerSize, aParentFont->mSize);
}
} else {
NS_NOTREACHED("unexpected value");
}
}
else if (aFontData.mSize.IsLengthUnit()) {
aFont->mSize = CalcLength(aFontData.mSize, &aParentFont->mFont, nsnull, aPresContext, aInherited);
zoom = aFontData.mSize.IsFixedLengthUnit() ||
aFontData.mSize.GetUnit() == eCSSUnit_Pixel;
}
else if (eCSSUnit_Percent == aFontData.mSize.GetUnit()) {
aInherited = PR_TRUE;
aFont->mSize = (nscoord)((float)(aParentFont->mSize) * aFontData.mSize.GetPercentValue());
zoom = PR_FALSE;
}
else if (eCSSUnit_Inherit == aFontData.mSize.GetUnit()) {
aInherited = PR_TRUE;
aFont->mSize = aParentFont->mSize;
zoom = PR_FALSE;
}
else if (eCSSUnit_Initial == aFontData.mSize.GetUnit()) {
aFont->mSize = aDefaultFont.size;
zoom = PR_TRUE;
}
// We want to zoom the cascaded size so that em-based measurements,
// line-heights, etc., work.
if (zoom)
aFont->mSize = ZoomFont(aPresContext, aFont->mSize);
// enforce the user' specified minimum font-size on the value that we expose
if (aChromeOverride) {
// the chrome is unconstrained, it always uses our cascading size
@ -2067,7 +2107,7 @@ static void
SetGenericFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
const nsCSSFont& aFontData, PRUint8 aGenericFontID,
nscoord aMinFontSize, PRBool aUseDocumentFonts,
PRBool aChromeOverride, nsStyleFont* aFont)
PRBool aChromeOverride, nsStyleFont* aFont, PRBool aZoom)
{
// walk up the contexts until a context with the desired generic font
nsAutoVoidArray contextPath;
@ -2135,7 +2175,7 @@ SetGenericFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
SetFont(aPresContext, context, aMinFontSize,
aUseDocumentFonts, aChromeOverride, PR_TRUE,
fontData, *defaultFont, &parentFont, aFont, dummy);
fontData, *defaultFont, &parentFont, aFont, aZoom, dummy);
// XXX Not sure if we need to do this here
// If we have a post-resolve callback, handle that now.
@ -2152,7 +2192,7 @@ SetGenericFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
// can just compute the delta from the parent.
SetFont(aPresContext, aContext, aMinFontSize,
aUseDocumentFonts, aChromeOverride, PR_TRUE,
aFontData, *defaultFont, &parentFont, aFont, dummy);
aFontData, *defaultFont, &parentFont, aFont, aZoom, dummy);
}
const nsStyleStruct*
@ -2185,10 +2225,12 @@ nsRuleNode::ComputeFontData(nsStyleStruct* aStartStruct, const nsCSSStruct& aDat
}
}
PRBool zoom = PR_FALSE;
const nsFont* defaultFont;
if (!font) {
mPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID, &defaultFont);
font = new (mPresContext) nsStyleFont(*defaultFont);
zoom = PR_TRUE;
}
if (!parentFont)
parentFont = font;
@ -2257,14 +2299,14 @@ nsRuleNode::ComputeFontData(nsStyleStruct* aStartStruct, const nsCSSStruct& aDat
mPresContext->GetDefaultFont(generic, &defaultFont);
SetFont(mPresContext, aContext, minimumFontSize,
useDocumentFonts, chromeOverride, PR_FALSE,
fontData, *defaultFont, parentFont, font, inherited);
fontData, *defaultFont, parentFont, font, zoom, inherited);
}
else {
// re-calculate the font as a generic font
inherited = PR_TRUE;
SetGenericFont(mPresContext, aContext, fontData,
generic, minimumFontSize, useDocumentFonts,
chromeOverride, font);
chromeOverride, font, zoom);
}
// Set our generic font's bit to inform our descendants
font->mFlags &= ~NS_STYLE_FONT_FACE_MASK;
@ -2332,10 +2374,15 @@ nsRuleNode::ComputeTextData(nsStyleStruct* aStartStruct, const nsCSSStruct& aDat
aContext->GetStyleData(eStyleStruct_Font));
text->mLineHeight.SetCoordValue((nscoord)((float)(font->mSize) *
textData.mLineHeight.GetPercentValue()));
} else
} else {
SetCoord(textData.mLineHeight, text->mLineHeight, parentText->mLineHeight,
SETCOORD_LH | SETCOORD_FACTOR | SETCOORD_NORMAL,
aContext, mPresContext, inherited);
if (textData.mLineHeight.IsFixedLengthUnit() ||
textData.mLineHeight.GetUnit() == eCSSUnit_Pixel)
text->mLineHeight.SetCoordValue(
ZoomFont(mPresContext, text->mLineHeight.GetCoordValue()));
}
// text-align: enum, string, inherit

10
layout/style/nsStyleStruct.cpp
Просмотреть файл

@ -221,16 +221,16 @@ nsStyleFont::nsStyleFont()
nsStyleFont::nsStyleFont(const nsFont& aFont)
: mFlags(NS_STYLE_FONT_DEFAULT),
mFont(aFont)
mFont(aFont),
mSize(aFont.size)
{
mSize = aFont.size;
}
nsStyleFont::nsStyleFont(const nsStyleFont& aSrc)
:mFont(aSrc.mFont)
: mFlags(aSrc.mFlags),
mFont(aSrc.mFont),
mSize(aSrc.mSize)
{
mSize = aSrc.mSize;
mFlags = aSrc.mFlags;
}
void*