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Bug 174055, part 3: deCOM ns(I|Thebes)FontMetrics. Code outside gfx/ not fixed up.

Browse Source 
--HG--
rename : gfx/src/nsThebesFontMetrics.cpp => gfx/src/nsFontMetrics.cpp
rename : gfx/src/nsThebesFontMetrics.h => gfx/src/nsFontMetrics.h
This commit is contained in:
Zack Weinberg 2011-04-07 18:05:26 -07:00
parent d6425e8bd1
commit 1c1eb035f0
13 changed files with 471 additions and 681 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gfx/src/Makefile.in
View File

@ -73,7 +73,7 @@ EXPORTS = \
nsMargin.h \
nsTransform2D.h \
nsRenderingContext.h \
nsIFontMetrics.h \
nsFontMetrics.h \
nsIDeviceContext.h \
nsGfxCIID.h \
nsIRegion.h \
@ -100,7 +100,7 @@ CPPSRCS = \
nsThebesRegion.cpp \
nsThebesGfxFactory.cpp \
nsRenderingContext.cpp \
nsThebesFontMetrics.cpp \
nsFontMetrics.cpp \
nsThebesFontEnumerator.cpp \
$(NULL)

2
gfx/src/nsBoundingMetrics.h
View File

@ -43,7 +43,7 @@
/* Struct used for accurate measurements of a string, in order to
* allow precise positioning when processing MathML. This is in its
* own header file because some very-widely-included headers need it
* but not the rest of nsIFontMetrics, or vice versa.
* but not the rest of nsFontMetrics, or vice versa.
*/
#ifdef MOZ_MATHML

172
gfx/src/nsThebesFontMetrics.cpp → gfx/src/nsFontMetrics.cpp
View File

@ -36,29 +36,51 @@
*
* ***** END LICENSE BLOCK ***** */
#include "nsThebesFontMetrics.h"
#include "nsFontMetrics.h"
#include "nsBoundingMetrics.h"
#include "nsRenderingContext.h"
#include "nsThebesDeviceContext.h"
#include "nsFont.h"
#include "nsString.h"
#include <stdio.h>
class AutoTextRun {
public:
AutoTextRun(nsFontMetrics* aMetrics, nsRenderingContext* aRC,
const char* aString, PRInt32 aLength) {
mTextRun = gfxTextRunCache::MakeTextRun(
reinterpret_cast<const PRUint8*>(aString), aLength,
aMetrics->GetThebesFontGroup(), aRC->ThebesContext(),
aMetrics->AppUnitsPerDevPixel(),
ComputeFlags(aMetrics));
}
AutoTextRun(nsFontMetrics* aMetrics, nsRenderingContext* aRC,
const PRUnichar* aString, PRInt32 aLength) {
mTextRun = gfxTextRunCache::MakeTextRun(
aString, aLength, aMetrics->GetThebesFontGroup(),
aRC->ThebesContext(),
aMetrics->AppUnitsPerDevPixel(),
ComputeFlags(aMetrics));
}
gfxTextRun* operator->() { return mTextRun.get(); }
gfxTextRun* get() { return mTextRun.get(); }
#include "gfxTextRunCache.h"
#include "gfxPlatform.h"
#include "gfxUserFontSet.h"
private:
gfxTextRunCache::AutoTextRun mTextRun;
NS_IMPL_ISUPPORTS1(nsThebesFontMetrics, nsIFontMetrics)
static PRUint32 ComputeFlags(nsFontMetrics* aMetrics) {
PRUint32 flags = 0;
if (aMetrics->GetRightToLeftTextRunMode()) {
flags |= gfxTextRunFactory::TEXT_IS_RTL;
}
return flags;
}
};
#include <stdlib.h>
nsThebesFontMetrics::nsThebesFontMetrics()
nsFontMetrics::nsFontMetrics()
{
mFontStyle = nsnull;
mFontGroup = nsnull;
}
nsThebesFontMetrics::~nsThebesFontMetrics()
nsFontMetrics::~nsFontMetrics()
{
if (mDeviceContext)
mDeviceContext->FontMetricsDeleted(this);
@ -66,8 +88,8 @@ nsThebesFontMetrics::~nsThebesFontMetrics()
//delete mFontGroup;
}
NS_IMETHODIMP
nsThebesFontMetrics::Init(const nsFont& aFont, nsIAtom* aLanguage,
nsresult
nsFontMetrics::Init(const nsFont& aFont, nsIAtom* aLanguage,
nsIDeviceContext *aContext,
gfxUserFontSet *aUserFontSet)
{
@ -97,8 +119,8 @@ nsThebesFontMetrics::Init(const nsFont& aFont, nsIAtom* aLanguage,
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::Destroy()
nsresult
nsFontMetrics::Destroy()
{
mDeviceContext = nsnull;
return NS_OK;
@ -108,42 +130,42 @@ nsThebesFontMetrics::Destroy()
#define ROUND_TO_TWIPS(x) (nscoord)floor(((x) * mP2A) + 0.5)
#define CEIL_TO_TWIPS(x) (nscoord)NS_ceil((x) * mP2A)
const gfxFont::Metrics& nsThebesFontMetrics::GetMetrics() const
const gfxFont::Metrics& nsFontMetrics::GetMetrics() const
{
return mFontGroup->GetFontAt(0)->GetMetrics();
}
NS_IMETHODIMP
nsThebesFontMetrics::GetXHeight(nscoord& aResult)
nsresult
nsFontMetrics::GetXHeight(nscoord& aResult)
{
aResult = ROUND_TO_TWIPS(GetMetrics().xHeight);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetSuperscriptOffset(nscoord& aResult)
nsresult
nsFontMetrics::GetSuperscriptOffset(nscoord& aResult)
{
aResult = ROUND_TO_TWIPS(GetMetrics().superscriptOffset);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetSubscriptOffset(nscoord& aResult)
nsresult
nsFontMetrics::GetSubscriptOffset(nscoord& aResult)
{
aResult = ROUND_TO_TWIPS(GetMetrics().subscriptOffset);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetStrikeout(nscoord& aOffset, nscoord& aSize)
nsresult
nsFontMetrics::GetStrikeout(nscoord& aOffset, nscoord& aSize)
{
aOffset = ROUND_TO_TWIPS(GetMetrics().strikeoutOffset);
aSize = ROUND_TO_TWIPS(GetMetrics().strikeoutSize);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetUnderline(nscoord& aOffset, nscoord& aSize)
nsresult
nsFontMetrics::GetUnderline(nscoord& aOffset, nscoord& aSize)
{
aOffset = ROUND_TO_TWIPS(mFontGroup->GetUnderlineOffset());
aSize = ROUND_TO_TWIPS(GetMetrics().underlineSize);
@ -170,109 +192,109 @@ static gfxFloat ComputeMaxAscent(const gfxFont::Metrics& aMetrics)
return NS_floor(aMetrics.maxAscent + 0.5);
}
NS_IMETHODIMP
nsThebesFontMetrics::GetHeight(nscoord &aHeight)
nsresult
nsFontMetrics::GetHeight(nscoord &aHeight)
{
aHeight = CEIL_TO_TWIPS(ComputeMaxAscent(GetMetrics())) +
CEIL_TO_TWIPS(ComputeMaxDescent(GetMetrics(), mFontGroup));
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetInternalLeading(nscoord &aLeading)
nsresult
nsFontMetrics::GetInternalLeading(nscoord &aLeading)
{
aLeading = ROUND_TO_TWIPS(GetMetrics().internalLeading);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetExternalLeading(nscoord &aLeading)
nsresult
nsFontMetrics::GetExternalLeading(nscoord &aLeading)
{
aLeading = ROUND_TO_TWIPS(GetMetrics().externalLeading);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetEmHeight(nscoord &aHeight)
nsresult
nsFontMetrics::GetEmHeight(nscoord &aHeight)
{
aHeight = ROUND_TO_TWIPS(GetMetrics().emHeight);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetEmAscent(nscoord &aAscent)
nsresult
nsFontMetrics::GetEmAscent(nscoord &aAscent)
{
aAscent = ROUND_TO_TWIPS(GetMetrics().emAscent);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetEmDescent(nscoord &aDescent)
nsresult
nsFontMetrics::GetEmDescent(nscoord &aDescent)
{
aDescent = ROUND_TO_TWIPS(GetMetrics().emDescent);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetMaxHeight(nscoord &aHeight)
nsresult
nsFontMetrics::GetMaxHeight(nscoord &aHeight)
{
aHeight = CEIL_TO_TWIPS(ComputeMaxAscent(GetMetrics())) +
CEIL_TO_TWIPS(ComputeMaxDescent(GetMetrics(), mFontGroup));
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetMaxAscent(nscoord &aAscent)
nsresult
nsFontMetrics::GetMaxAscent(nscoord &aAscent)
{
aAscent = CEIL_TO_TWIPS(ComputeMaxAscent(GetMetrics()));
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetMaxDescent(nscoord &aDescent)
nsresult
nsFontMetrics::GetMaxDescent(nscoord &aDescent)
{
aDescent = CEIL_TO_TWIPS(ComputeMaxDescent(GetMetrics(), mFontGroup));
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetMaxAdvance(nscoord &aAdvance)
nsresult
nsFontMetrics::GetMaxAdvance(nscoord &aAdvance)
{
aAdvance = CEIL_TO_TWIPS(GetMetrics().maxAdvance);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetLanguage(nsIAtom** aLanguage)
nsresult
nsFontMetrics::GetLanguage(nsIAtom** aLanguage)
{
*aLanguage = mLanguage;
NS_IF_ADDREF(*aLanguage);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetFontHandle(nsFontHandle &aHandle)
nsresult
nsFontMetrics::GetFontHandle(nsFontHandle &aHandle)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetAveCharWidth(nscoord& aAveCharWidth)
nsresult
nsFontMetrics::GetAveCharWidth(nscoord& aAveCharWidth)
{
// Use CEIL instead of ROUND for consistency with GetMaxAdvance
aAveCharWidth = CEIL_TO_TWIPS(GetMetrics().aveCharWidth);
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::GetSpaceWidth(nscoord& aSpaceCharWidth)
nsresult
nsFontMetrics::GetSpaceWidth(nscoord& aSpaceCharWidth)
{
aSpaceCharWidth = CEIL_TO_TWIPS(GetMetrics().spaceWidth);
return NS_OK;
}
PRInt32
nsThebesFontMetrics::GetMaxStringLength()
nsFontMetrics::GetMaxStringLength()
{
const gfxFont::Metrics& m = GetMetrics();
const double x = 32767.0 / m.maxAdvance;
@ -297,7 +319,7 @@ public:
};
nsresult
nsThebesFontMetrics::GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth,
nsFontMetrics::GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth,
nsRenderingContext *aContext)
{
if (aLength == 0) {
@ -320,7 +342,7 @@ nsThebesFontMetrics::GetWidth(const char* aString, PRUint32 aLength, nscoord& aW
}
nsresult
nsThebesFontMetrics::GetWidth(const PRUnichar* aString, PRUint32 aLength,
nsFontMetrics::GetWidth(const PRUnichar* aString, PRUint32 aLength,
nscoord& aWidth, PRInt32 *aFontID,
nsRenderingContext *aContext)
{
@ -345,7 +367,7 @@ nsThebesFontMetrics::GetWidth(const PRUnichar* aString, PRUint32 aLength,
// Get the text dimensions for this string
nsresult
nsThebesFontMetrics::GetTextDimensions(const PRUnichar* aString,
nsFontMetrics::GetTextDimensions(const PRUnichar* aString,
PRUint32 aLength,
nsTextDimensions& aDimensions,
PRInt32* aFontID)
@ -354,7 +376,7 @@ nsThebesFontMetrics::GetTextDimensions(const PRUnichar* aString,
}
nsresult
nsThebesFontMetrics::GetTextDimensions(const char* aString,
nsFontMetrics::GetTextDimensions(const char* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
@ -367,7 +389,7 @@ nsThebesFontMetrics::GetTextDimensions(const char* aString,
return NS_OK;
}
nsresult
nsThebesFontMetrics::GetTextDimensions(const PRUnichar* aString,
nsFontMetrics::GetTextDimensions(const PRUnichar* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
@ -382,7 +404,7 @@ nsThebesFontMetrics::GetTextDimensions(const PRUnichar* aString,
// Draw a string using this font handle on the surface passed in.
nsresult
nsThebesFontMetrics::DrawString(const char *aString, PRUint32 aLength,
nsFontMetrics::DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
const nscoord* aSpacing,
nsRenderingContext *aContext)
@ -405,7 +427,7 @@ nsThebesFontMetrics::DrawString(const char *aString, PRUint32 aLength,
}
nsresult
nsThebesFontMetrics::DrawString(const PRUnichar* aString, PRUint32 aLength,
nsFontMetrics::DrawString(const PRUnichar* aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nsRenderingContext *aContext,
nsRenderingContext *aTextRunConstructionContext)
@ -429,13 +451,15 @@ nsThebesFontMetrics::DrawString(const PRUnichar* aString, PRUint32 aLength,
#ifdef MOZ_MATHML
static void
GetTextRunBoundingMetrics(gfxTextRun *aTextRun, PRUint32 aStart, PRUint32 aLength,
GetTextRunBoundingMetrics(gfxTextRun *aTextRun,
PRUint32 aStart, PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics)
{
StubPropertyProvider provider;
gfxTextRun::Metrics theMetrics =
aTextRun->MeasureText(aStart, aLength, gfxFont::TIGHT_HINTED_OUTLINE_EXTENTS,
aTextRun->MeasureText(aStart, aLength,
gfxFont::TIGHT_HINTED_OUTLINE_EXTENTS,
aContext->ThebesContext(), &provider);
// note that TIGHT_HINTED_OUTLINE_EXTENTS can be expensive (on Windows)
// but this is only used for MathML positioning so it's not critical
@ -448,7 +472,7 @@ GetTextRunBoundingMetrics(gfxTextRun *aTextRun, PRUint32 aStart, PRUint32 aLengt
}
nsresult
nsThebesFontMetrics::GetBoundingMetrics(const char *aString, PRUint32 aLength,
nsFontMetrics::GetBoundingMetrics(const char *aString, PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics)
{
@ -461,12 +485,13 @@ nsThebesFontMetrics::GetBoundingMetrics(const char *aString, PRUint32 aLength,
if (!textRun.get())
return NS_ERROR_FAILURE;
GetTextRunBoundingMetrics(textRun.get(), 0, aLength, aContext, aBoundingMetrics);
GetTextRunBoundingMetrics(textRun.get(), 0, aLength, aContext,
aBoundingMetrics);
return NS_OK;
}
nsresult
nsThebesFontMetrics::GetBoundingMetrics(const PRUnichar *aString, PRUint32 aLength,
nsFontMetrics::GetBoundingMetrics(const PRUnichar *aString, PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics)
{
@ -479,7 +504,8 @@ nsThebesFontMetrics::GetBoundingMetrics(const PRUnichar *aString, PRUint32 aLeng
if (!textRun.get())
return NS_ERROR_FAILURE;
GetTextRunBoundingMetrics(textRun.get(), 0, aLength, aContext, aBoundingMetrics);
GetTextRunBoundingMetrics(textRun.get(), 0, aLength, aContext,
aBoundingMetrics);
return NS_OK;
}
@ -487,7 +513,7 @@ nsThebesFontMetrics::GetBoundingMetrics(const PRUnichar *aString, PRUint32 aLeng
// Set the direction of the text rendering
nsresult
nsThebesFontMetrics::SetRightToLeftText(PRBool aIsRTL)
nsFontMetrics::SetRightToLeftText(PRBool aIsRTL)
{
mIsRightToLeft = aIsRTL;
return NS_OK;
@ -495,13 +521,13 @@ nsThebesFontMetrics::SetRightToLeftText(PRBool aIsRTL)
// Set the direction of the text rendering
PRBool
nsThebesFontMetrics::GetRightToLeftText()
nsFontMetrics::GetRightToLeftText()
{
return mIsRightToLeft;
}
/* virtual */ gfxUserFontSet*
nsThebesFontMetrics::GetUserFontSet()
gfxUserFontSet*
nsFontMetrics::GetUserFontSet()
{
return mFontGroup->GetUserFontSet();
}

298
gfx/src/nsFontMetrics.h Normal file
View File

@ -0,0 +1,298 @@
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* mozilla.org.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef NSFONTMETRICS__H__
#define NSFONTMETRICS__H__
#include "nsCOMPtr.h"
#include "nsCoord.h"
#include "nsFont.h"
#include "gfxFont.h"
#include "gfxTextRunCache.h"
class gfxFontGroup;
class gfxUserFontSet;
class nsIAtom;
class nsIDeviceContext;
class nsRenderingContext;
class nsString;
class nsThebesDeviceContext;
struct nsBoundingMetrics;
struct nsTextDimensions;
/**
* A native font handle
*/
typedef void* nsFontHandle;
/**
* Font metrics
*
* This class may be somewhat misnamed. A better name might be
* nsFontList. The style system uses the nsFont struct for various
* font properties, one of which is font-family, which can contain a
* *list* of font names. The nsFont struct is "realized" by asking the
* device context to cough up an nsFontMetrics object, which contains
* a list of real font handles, one for each font mentioned in
* font-family (and for each fallback when we fall off the end of that
* list).
*
* The style system needs to have access to certain metrics, such as
* the em height (for the CSS "em" unit), and we use the first Western
* font's metrics for that purpose. The platform-specific
* implementations are expected to select non-Western fonts that "fit"
* reasonably well with the Western font that is loaded at Init time.
*/
class nsFontMetrics
{
public:
nsFontMetrics();
~nsFontMetrics();
NS_INLINE_DECL_REFCOUNTING(nsFontMetrics)
/**
* Initialize the font metrics. Call this after creating the font metrics.
* Font metrics you get from the font cache do NOT need to be initialized
*
* @see nsIDeviceContext#GetMetricsFor()
*/
nsresult Init(const nsFont& aFont, nsIAtom* aLanguage,
nsIDeviceContext *aContext,
gfxUserFontSet *aUserFontSet = nsnull);
/**
* Destroy this font metrics. This breaks the association between
* the font metrics and the device context.
*/
nsresult Destroy();
/**
* Return the font's xheight property, scaled into app-units.
*/
nsresult GetXHeight(nscoord& aResult);
/**
* Return the font's superscript offset (the distance from the
* baseline to where a superscript's baseline should be placed).
* The value returned will be positive.
*/
nsresult GetSuperscriptOffset(nscoord& aResult);
/**
* Return the font's subscript offset (the distance from the
* baseline to where a subscript's baseline should be placed). The
* value returned will be a positive value.
*/
nsresult GetSubscriptOffset(nscoord& aResult);
/**
* Return the font's strikeout offset (the distance from the
* baseline to where a strikeout should be placed) and size.
* Positive values are above the baseline, negative below.
*/
nsresult GetStrikeout(nscoord& aOffset, nscoord& aSize);
/**
* Return the font's underline offset (the distance from the
* baseline to where a underline should be placed) and size.
* Positive values are above the baseline, negative below.
*/
nsresult GetUnderline(nscoord& aOffset, nscoord& aSize);
/**
* Returns the height (in app units) of the font. This is ascent plus descent
* plus any internal leading
*
* This method will be removed once the callers have been moved over to the
* new GetEmHeight (and possibly GetMaxHeight).
*/
nsresult GetHeight(nscoord &aHeight);
/**
* Returns the amount of internal leading (in app units) for the font. This
* is computed as the "height - (ascent + descent)"
*/
nsresult GetInternalLeading(nscoord &aLeading);
/**
* Returns the amount of external leading (in app units) as
* suggested by font vendor. This value is suggested by font vendor
* to add to normal line-height beside font height.
*/
nsresult GetExternalLeading(nscoord &aLeading);
/**
* Returns the height (in app units) of the Western font's em square. This is
* em ascent plus em descent.
*/
nsresult GetEmHeight(nscoord &aHeight);
/**
* Returns, in app units, the ascent part of the Western font's em square.
*/
nsresult GetEmAscent(nscoord &aAscent);
/**
* Returns, in app units, the descent part of the Western font's em square.
*/
nsresult GetEmDescent(nscoord &aDescent);
/**
* Returns the height (in app units) of the Western font's bounding box.
* This is max ascent plus max descent.
*/
nsresult GetMaxHeight(nscoord &aHeight);
/**
* Returns, in app units, the maximum distance characters in this font extend
* above the base line.
*/
nsresult GetMaxAscent(nscoord &aAscent);
/**
* Returns, in app units, the maximum distance characters in this font extend
* below the base line.
*/
nsresult GetMaxDescent(nscoord &aDescent);
/**
* Returns, in app units, the maximum character advance for the font
*/
nsresult GetMaxAdvance(nscoord &aAdvance);
/**
* Returns the font associated with these metrics. The return value
* is only defined after Init() has been called.
*/
const nsFont &Font() { return mFont; }
/**
* Returns the language associated with these metrics
*/
nsresult GetLanguage(nsIAtom** aLanguage);
/**
* Returns the font handle associated with these metrics
*/
nsresult GetFontHandle(nsFontHandle &aHandle);
/**
* Returns the average character width
*/
nsresult GetAveCharWidth(nscoord& aAveCharWidth);
/**
* Returns the often needed width of the space character
*/
nsresult GetSpaceWidth(nscoord& aSpaceCharWidth);
PRInt32 GetMaxStringLength();
// Get the width for this string. aWidth will be updated with the
// width in points, not twips. Callers must convert it if they
// want it in another format.
nsresult GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth,
nsRenderingContext *aContext);
nsresult GetWidth(const PRUnichar* aString, PRUint32 aLength,
nscoord& aWidth, PRInt32 *aFontID,
nsRenderingContext *aContext);
// Get the text dimensions for this string
nsresult GetTextDimensions(const PRUnichar* aString,
PRUint32 aLength,
nsTextDimensions& aDimensions,
PRInt32* aFontID);
nsresult GetTextDimensions(const char* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
PRInt32 aNumBreaks,
nsTextDimensions& aDimensions,
PRInt32& aNumCharsFit,
nsTextDimensions& aLastWordDimensions,
PRInt32* aFontID);
nsresult GetTextDimensions(const PRUnichar* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
PRInt32 aNumBreaks,
nsTextDimensions& aDimensions,
PRInt32& aNumCharsFit,
nsTextDimensions& aLastWordDimensions,
PRInt32* aFontID);
// Draw a string using this font handle on the surface passed in.
nsresult DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
const nscoord* aSpacing,
nsRenderingContext *aContext);
nsresult DrawString(const PRUnichar* aString, PRUint32 aLength,
nscoord aX, nscoord aY,
PRInt32 aFontID,
const nscoord* aSpacing,
nsRenderingContext *aContext)
{
NS_ASSERTION(!aSpacing, "Spacing not supported here");
return DrawString(aString, aLength, aX, aY, aContext, aContext);
}
nsresult DrawString(const PRUnichar* aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nsRenderingContext *aContext,
nsRenderingContext *aTextRunConstructionContext);
#ifdef MOZ_MATHML
// These two functions get the bounding metrics for this handle,
// updating the aBoundingMetrics in app units.
nsresult GetBoundingMetrics(const char *aString, PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics);
nsresult GetBoundingMetrics(const PRUnichar *aString,
PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics);
#endif /* MOZ_MATHML */
// Set the direction of the text rendering
nsresult SetRightToLeftText(PRBool aIsRTL);
PRBool GetRightToLeftText();
void SetTextRunRTL(PRBool aIsRTL) { mTextRunRTL = aIsRTL; }
gfxFontGroup* GetThebesFontGroup() { return mFontGroup; }
gfxUserFontSet* GetUserFontSet();
PRBool GetRightToLeftTextRunMode() {
return mTextRunRTL;
}
PRInt32 AppUnitsPerDevPixel() { return mP2A; }
protected:
const gfxFont::Metrics& GetMetrics() const;
nsFont mFont; // The font for this metrics object.
nsRefPtr<gfxFontGroup> mFontGroup;
gfxFontStyle *mFontStyle;
nsThebesDeviceContext *mDeviceContext;
nsCOMPtr<nsIAtom> mLanguage;
PRInt32 mP2A;
PRPackedBool mIsRightToLeft;
PRPackedBool mTextRunRTL;
};
#endif /* NSFONTMETRICS__H__ */

4
gfx/src/nsGfxCIID.h
View File

@ -50,10 +50,6 @@
{ 0x6049b262, 0xc1e6, 0x11d1, \
{ 0xa8, 0x27, 0x00, 0x40, 0x95, 0x9a, 0x28, 0xc9 } }
#define NS_FONT_METRICS_CID \
{ 0x6049b263, 0xc1e6, 0x11d1, \
{ 0xa8, 0x27, 0x00, 0x40, 0x95, 0x9a, 0x28, 0xc9 } }
#define NS_FONT_ENUMERATOR_CID \
{ 0xa6cf9115, 0x15b3, 0x11d2, \
{ 0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32 } }

12
gfx/src/nsIDeviceContext.h
View File

@ -46,7 +46,7 @@
#include "nsStringFwd.h"
class nsIView;
class nsIFontMetrics;
class nsFontMetrics;
class nsIWidget;
class nsIDeviceContextSpec;
class nsIAtom;
@ -309,7 +309,7 @@ public:
NS_IMETHOD GetSystemFont(nsSystemFontID aID, nsFont *aFont) const = 0;
/**
* Get the nsIFontMetrics that describe the properties of
* Get the nsFontMetrics that describe the properties of
* an nsFont.
* @param aFont font description to obtain metrics for
* @param aLanguage the language of the document
@ -319,10 +319,10 @@ public:
*/
NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIAtom* aLanguage,
gfxUserFontSet* aUserFontSet,
nsIFontMetrics*& aMetrics) = 0;
nsFontMetrics*& aMetrics) = 0;
/**
* Get the nsIFontMetrics that describe the properties of
* Get the nsFontMetrics that describe the properties of
* an nsFont.
* @param aFont font description to obtain metrics for
* @param aMetrics out parameter for font metrics
@ -330,7 +330,7 @@ public:
* @return error status
*/
NS_IMETHOD GetMetricsFor(const nsFont& aFont, gfxUserFontSet* aUserFontSet,
nsIFontMetrics*& aMetrics) = 0;
nsFontMetrics*& aMetrics) = 0;
/**
* Check to see if a particular named font exists.
@ -347,7 +347,7 @@ public:
* Notification when a font metrics instance created for this device is
* about to be deleted
*/
NS_IMETHOD FontMetricsDeleted(const nsIFontMetrics* aFontMetrics) = 0;
NS_IMETHOD FontMetricsDeleted(const nsFontMetrics* aFontMetrics) = 0;
/**
* Attempt to free up resoruces by flushing out any fonts no longer

306
gfx/src/nsIFontMetrics.h
View File

@ -1,306 +0,0 @@
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsIFontMetrics_h___
#define nsIFontMetrics_h___
#include "nsISupports.h"
#include "nsCoord.h"
#include "nsFont.h"
class nsString;
class nsIDeviceContext;
class nsIAtom;
class gfxUserFontSet;
struct nsTextDimensions;
struct nsBoundingMetrics;
class gfxFontGroup;
class nsRenderingContext;
// IID for the nsIFontMetrics interface
#define NS_IFONT_METRICS_IID \
{ 0x360C5575, 0xF7AC, 0x4079, \
{ 0xB8, 0xA6, 0x56, 0x91, 0x4B, 0xEA, 0x2A, 0xEA } }
/**
* A native font handle
*/
typedef void* nsFontHandle;
/**
* Font metrics interface
*
* This interface may be somewhat misnamed. A better name might be
* nsIFontList. The style system uses the nsFont struct for various font
* properties, one of which is font-family, which can contain a *list* of
* font names. The nsFont struct is "realized" by asking the device context
* to cough up an nsIFontMetrics object, which contains a list of real font
* handles, one for each font mentioned in font-family (and for each fallback
* when we fall off the end of that list).
*
* The style system needs to have access to certain metrics, such as the
* em height (for the CSS "em" unit), and we use the first Western font's
* metrics for that purpose. The platform-specific implementations are
* expected to select non-Western fonts that "fit" reasonably well with the
* Western font that is loaded at Init time.
*/
class nsIFontMetrics : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IFONT_METRICS_IID)
/**
* Initialize the font metrics. Call this after creating the font metrics.
* Font metrics you get from the font cache do NOT need to be initialized
*
* @see nsIDeviceContext#GetMetricsFor()
*/
NS_IMETHOD Init(const nsFont& aFont, nsIAtom* aLanguage,
nsIDeviceContext *aContext, gfxUserFontSet *aUserFontSet = nsnull) = 0;
/**
* Destroy this font metrics. This breaks the association between
* the font metrics and the device context.
*/
NS_IMETHOD Destroy() = 0;
/**
* Return the font's xheight property, scaled into app-units.
*/
NS_IMETHOD GetXHeight(nscoord& aResult) = 0;
/**
* Return the font's superscript offset (the distance from the
* baseline to where a superscript's baseline should be placed).
* The value returned will be positive.
*/
NS_IMETHOD GetSuperscriptOffset(nscoord& aResult) = 0;
/**
* Return the font's subscript offset (the distance from the
* baseline to where a subscript's baseline should be placed). The
* value returned will be a positive value.
*/
NS_IMETHOD GetSubscriptOffset(nscoord& aResult) = 0;
/**
* Return the font's strikeout offset (the distance from the
* baseline to where a strikeout should be placed) and size.
* Positive values are above the baseline, negative below.
*/
NS_IMETHOD GetStrikeout(nscoord& aOffset, nscoord& aSize) = 0;
/**
* Return the font's underline offset (the distance from the
* baseline to where a underline should be placed) and size.
* Positive values are above the baseline, negative below.
*/
NS_IMETHOD GetUnderline(nscoord& aOffset, nscoord& aSize) = 0;
/**
* Returns the height (in app units) of the font. This is ascent plus descent
* plus any internal leading
*
* This method will be removed once the callers have been moved over to the
* new GetEmHeight (and possibly GetMaxHeight).
*/
NS_IMETHOD GetHeight(nscoord &aHeight) = 0;
/**
* Returns the amount of internal leading (in app units) for the font. This
* is computed as the "height - (ascent + descent)"
*/
NS_IMETHOD GetInternalLeading(nscoord &aLeading) = 0;
/**
* Returns the amount of external leading (in app units) as
* suggested by font vendor. This value is suggested by font vendor
* to add to normal line-height beside font height.
*/
NS_IMETHOD GetExternalLeading(nscoord &aLeading) = 0;
/**
* Returns the height (in app units) of the Western font's em square. This is
* em ascent plus em descent.
*/
NS_IMETHOD GetEmHeight(nscoord &aHeight) = 0;
/**
* Returns, in app units, the ascent part of the Western font's em square.
*/
NS_IMETHOD GetEmAscent(nscoord &aAscent) = 0;
/**
* Returns, in app units, the descent part of the Western font's em square.
*/
NS_IMETHOD GetEmDescent(nscoord &aDescent) = 0;
/**
* Returns the height (in app units) of the Western font's bounding box.
* This is max ascent plus max descent.
*/
NS_IMETHOD GetMaxHeight(nscoord &aHeight) = 0;
/**
* Returns, in app units, the maximum distance characters in this font extend
* above the base line.
*/
NS_IMETHOD GetMaxAscent(nscoord &aAscent) = 0;
/**
* Returns, in app units, the maximum distance characters in this font extend
* below the base line.
*/
NS_IMETHOD GetMaxDescent(nscoord &aDescent) = 0;
/**
* Returns, in app units, the maximum character advance for the font
*/
NS_IMETHOD GetMaxAdvance(nscoord &aAdvance) = 0;
/**
* Returns the font associated with these metrics. The return value
* is only defined after Init() has been called.
*/
const nsFont &Font() { return mFont; }
/**
* Returns the language associated with these metrics
*/
NS_IMETHOD GetLanguage(nsIAtom** aLanguage) = 0;
/**
* Returns the font handle associated with these metrics
*/
NS_IMETHOD GetFontHandle(nsFontHandle &aHandle) = 0;
/**
* Returns the average character width
*/
NS_IMETHOD GetAveCharWidth(nscoord& aAveCharWidth) = 0;
/**
* Returns the often needed width of the space character
*/
NS_IMETHOD GetSpaceWidth(nscoord& aSpaceCharWidth) = 0;
// methods formerly in nsIThebesFontMetrics
// Get the width for this string. aWidth will be updated with the
// width in points, not twips. Callers must convert it if they
// want it in another format.
virtual nsresult GetWidth(const char* aString, PRUint32 aLength,
nscoord& aWidth, nsRenderingContext *aContext) = 0;
virtual nsresult GetWidth(const PRUnichar* aString, PRUint32 aLength,
nscoord& aWidth, PRInt32 *aFontID,
nsRenderingContext *aContext) = 0;
// Get the text dimensions for this string
virtual nsresult GetTextDimensions(const PRUnichar* aString,
PRUint32 aLength,
nsTextDimensions& aDimensions,
PRInt32* aFontID) = 0;
virtual nsresult GetTextDimensions(const char* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
PRInt32 aNumBreaks,
nsTextDimensions& aDimensions,
PRInt32& aNumCharsFit,
nsTextDimensions& aLastWordDimensions,
PRInt32* aFontID) = 0;
virtual nsresult GetTextDimensions(const PRUnichar* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
PRInt32 aNumBreaks,
nsTextDimensions& aDimensions,
PRInt32& aNumCharsFit,
nsTextDimensions& aLastWordDimensions,
PRInt32* aFontID) = 0;
// Draw a string using this font handle on the surface passed in.
virtual nsresult DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
const nscoord* aSpacing,
nsRenderingContext *aContext) = 0;
virtual nsresult DrawString(const PRUnichar* aString, PRUint32 aLength,
nscoord aX, nscoord aY,
PRInt32 aFontID,
const nscoord* aSpacing,
nsRenderingContext *aContext) = 0;
virtual nsresult DrawString(const PRUnichar* aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nsRenderingContext *aContext,
nsRenderingContext *aTextRunConstructionContext) = 0;
#ifdef MOZ_MATHML
// These two functions get the bounding metrics for this handle,
// updating the aBoundingMetrics in Points. This means that the
// caller will have to update them to twips before passing it
// back.
virtual nsresult GetBoundingMetrics(const char *aString, PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics) = 0;
// aCachedOffset will be updated with a new offset.
virtual nsresult GetBoundingMetrics(const PRUnichar *aString,
PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics) = 0;
#endif /* MOZ_MATHML */
// Set the direction of the text rendering
virtual nsresult SetRightToLeftText(PRBool aIsRTL) = 0;
virtual PRBool GetRightToLeftText() = 0;
virtual void SetTextRunRTL(PRBool aIsRTL) = 0;
virtual PRInt32 GetMaxStringLength() = 0;
virtual gfxFontGroup* GetThebesFontGroup() = 0;
// Needs to be virtual and at this level so that its caller in gkgfx can
// avoid linking against thebes.
virtual gfxUserFontSet* GetUserFontSet() = 0;
protected:
nsFont mFont; // The font for this metrics object.
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIFontMetrics, NS_IFONT_METRICS_IID)
#endif /* nsIFontMetrics_h___ */

2
gfx/src/nsRenderingContext.cpp
View File

@ -477,7 +477,7 @@ nsRenderingContext::SetFont(const nsFont& aFont,
}
void
nsRenderingContext::SetFont(nsIFontMetrics *aFontMetrics)
nsRenderingContext::SetFont(nsFontMetrics *aFontMetrics)
{
mFontMetrics = aFontMetrics;
}

8
gfx/src/nsRenderingContext.h
View File

@ -42,7 +42,7 @@
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsIDeviceContext.h"
#include "nsIFontMetrics.h"
#include "nsFontMetrics.h"
#include "nsColor.h"
#include "nsCoord.h"
#include "gfxContext.h"
@ -120,8 +120,8 @@ public:
void SetFont(const nsFont& aFont, nsIAtom* aLanguage,
gfxUserFontSet *aUserFontSet);
void SetFont(const nsFont& aFont, gfxUserFontSet *aUserFontSet);
void SetFont(nsIFontMetrics *aFontMetrics);
nsIFontMetrics *FontMetrics() { return mFontMetrics; } // may be null
void SetFont(nsFontMetrics *aFontMetrics);
nsFontMetrics *FontMetrics() { return mFontMetrics; } // may be null
void SetRightToLeftText(PRBool aIsRTL);
void SetTextRunRTL(PRBool aIsRTL);
@ -151,7 +151,7 @@ protected:
nsRefPtr<gfxContext> mThebes;
nsCOMPtr<nsIDeviceContext> mDeviceContext;
nsCOMPtr<nsIFontMetrics> mFontMetrics;
nsRefPtr<nsFontMetrics> mFontMetrics;
double mP2A; // cached app units per device pixel value
};

44
gfx/src/nsThebesDeviceContext.cpp
View File

@ -105,15 +105,14 @@ public:
nsresult Init(nsIDeviceContext* aContext);
nsresult GetMetricsFor(const nsFont& aFont, nsIAtom* aLanguage,
gfxUserFontSet* aUserFontSet,
nsIFontMetrics*& aMetrics);
nsFontMetrics*& aMetrics);
nsresult FontMetricsDeleted(const nsIFontMetrics* aFontMetrics);
nsresult FontMetricsDeleted(const nsFontMetrics* aFontMetrics);
nsresult Compact();
nsresult Flush();
nsresult CreateFontMetricsInstance(nsIFontMetrics** fm);
protected:
nsTArray<nsIFontMetrics*> mFontMetrics;
nsTArray<nsFontMetrics*> mFontMetrics;
nsIDeviceContext *mContext; // we do not addref this since
// ownership is implied. MMP.
};
@ -142,12 +141,12 @@ nsFontCache::Init(nsIDeviceContext* aContext)
nsresult
nsFontCache::GetMetricsFor(const nsFont& aFont, nsIAtom* aLanguage,
gfxUserFontSet* aUserFontSet, nsIFontMetrics*& aMetrics)
gfxUserFontSet* aUserFontSet, nsFontMetrics*& aMetrics)
{
// First check our cache
// start from the end, which is where we put the most-recent-used element
nsIFontMetrics* fm;
nsFontMetrics* fm;
PRInt32 n = mFontMetrics.Length() - 1;
for (PRInt32 i = n; i >= 0; --i) {
fm = mFontMetrics[i];
@ -169,10 +168,9 @@ nsFontCache::GetMetricsFor(const nsFont& aFont, nsIAtom* aLanguage,
// It's not in the cache. Get font metrics and then cache them.
aMetrics = nsnull;
nsresult rv = CreateFontMetricsInstance(&fm);
if (NS_FAILED(rv)) return rv;
rv = fm->Init(aFont, aLanguage, mContext, aUserFontSet);
fm = new nsFontMetrics();
NS_ADDREF(fm);
nsresult rv = fm->Init(aFont, aLanguage, mContext, aUserFontSet);
if (NS_SUCCEEDED(rv)) {
// the mFontMetrics list has the "head" at the end, because append
// is cheaper than insert
@ -189,13 +187,12 @@ nsFontCache::GetMetricsFor(const nsFont& aFont, nsIAtom* aLanguage,
// objects are available. Compact the cache and try again.
Compact();
rv = CreateFontMetricsInstance(&fm);
if (NS_FAILED(rv)) return rv;
fm = new nsFontMetrics();
NS_ADDREF(fm);
rv = fm->Init(aFont, aLanguage, mContext, aUserFontSet);
if (NS_SUCCEEDED(rv)) {
mFontMetrics.AppendElement(fm);
aMetrics = fm;
NS_ADDREF(aMetrics);
return NS_OK;
}
fm->Destroy();
@ -215,14 +212,7 @@ nsFontCache::GetMetricsFor(const nsFont& aFont, nsIAtom* aLanguage,
return rv;
}
nsresult
nsFontCache::CreateFontMetricsInstance(nsIFontMetrics** fm)
{
static NS_DEFINE_CID(kFontMetricsCID, NS_FONT_METRICS_CID);
return CallCreateInstance(kFontMetricsCID, fm);
}
nsresult nsFontCache::FontMetricsDeleted(const nsIFontMetrics* aFontMetrics)
nsresult nsFontCache::FontMetricsDeleted(const nsFontMetrics* aFontMetrics)
{
mFontMetrics.RemoveElement(aFontMetrics);
return NS_OK;
@ -233,8 +223,8 @@ nsresult nsFontCache::Compact()
// Need to loop backward because the running element can be removed on
// the way
for (PRInt32 i = mFontMetrics.Length()-1; i >= 0; --i) {
nsIFontMetrics* fm = mFontMetrics[i];
nsIFontMetrics* oldfm = fm;
nsFontMetrics* fm = mFontMetrics[i];
nsFontMetrics* oldfm = fm;
// Destroy() isn't here because we want our device context to be
// notified
NS_RELEASE(fm); // this will reset fm to nsnull
@ -251,7 +241,7 @@ nsresult nsFontCache::Compact()
nsresult nsFontCache::Flush()
{
for (PRInt32 i = mFontMetrics.Length()-1; i >= 0; --i) {
nsIFontMetrics* fm = mFontMetrics[i];
nsFontMetrics* fm = mFontMetrics[i];
// Destroy() will unhook our device context from the fm so that we
// won't waste time in triggering the notification of
// FontMetricsDeleted() in the subsequent release
@ -324,7 +314,7 @@ NS_IMETHODIMP nsThebesDeviceContext::CreateFontCache()
return mFontCache->Init(this);
}
NS_IMETHODIMP nsThebesDeviceContext::FontMetricsDeleted(const nsIFontMetrics* aFontMetrics)
NS_IMETHODIMP nsThebesDeviceContext::FontMetricsDeleted(const nsFontMetrics* aFontMetrics)
{
if (mFontCache) {
mFontCache->FontMetricsDeleted(aFontMetrics);
@ -348,7 +338,7 @@ nsThebesDeviceContext::GetLocaleLanguage(void)
}
NS_IMETHODIMP nsThebesDeviceContext::GetMetricsFor(const nsFont& aFont,
nsIAtom* aLanguage, gfxUserFontSet* aUserFontSet, nsIFontMetrics*& aMetrics)
nsIAtom* aLanguage, gfxUserFontSet* aUserFontSet, nsFontMetrics*& aMetrics)
{
if (nsnull == mFontCache) {
nsresult rv = CreateFontCache();
@ -371,7 +361,7 @@ NS_IMETHODIMP nsThebesDeviceContext::GetMetricsFor(const nsFont& aFont,
NS_IMETHODIMP nsThebesDeviceContext::GetMetricsFor(const nsFont& aFont,
gfxUserFontSet* aUserFontSet,
nsIFontMetrics*& aMetrics)
nsFontMetrics*& aMetrics)
{
if (nsnull == mFontCache) {
nsresult rv = CreateFontCache();

6
gfx/src/nsThebesDeviceContext.h
View File

@ -86,10 +86,10 @@ public:
NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIAtom* aLanguage,
gfxUserFontSet* aUserFontSet,
nsIFontMetrics*& aMetrics);
nsFontMetrics*& aMetrics);
NS_IMETHOD GetMetricsFor(const nsFont& aFont,
gfxUserFontSet* aUserFontSet,
nsIFontMetrics*& aMetrics);
nsFontMetrics*& aMetrics);
NS_IMETHOD FirstExistingFont(const nsFont& aFont, nsString& aFaceName);
@ -97,7 +97,7 @@ public:
PRBool& aAliased);
NS_IMETHOD CreateFontCache();
NS_IMETHOD FontMetricsDeleted(const nsIFontMetrics* aFontMetrics);
NS_IMETHOD FontMetricsDeleted(const nsFontMetrics* aFontMetrics);
NS_IMETHOD FlushFontCache(void);
NS_IMETHOD PrepareNativeWidget(nsIWidget *aWidget, void **aOut);

209
gfx/src/nsThebesFontMetrics.h
View File

@ -1,209 +0,0 @@
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* mozilla.org.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef NSTHEBESFONTMETRICS__H__
#define NSTHEBESFONTMETRICS__H__
#include "nsIFontMetrics.h"
#include "nsCOMPtr.h"
#include "nsRenderingContext.h"
#include "gfxFont.h"
#include "gfxTextRunCache.h"
class nsIAtom;
class nsIDeviceContext;
class nsThebesDeviceContext;
class nsThebesFontMetrics : public nsIFontMetrics
{
public:
nsThebesFontMetrics();
virtual ~nsThebesFontMetrics();
NS_DECL_ISUPPORTS
NS_IMETHOD Init(const nsFont& aFont, nsIAtom* aLanguage,
nsIDeviceContext *aContext,
gfxUserFontSet *aUserFontSet = nsnull);
NS_IMETHOD Destroy();
NS_IMETHOD GetXHeight(nscoord& aResult);
NS_IMETHOD GetSuperscriptOffset(nscoord& aResult);
NS_IMETHOD GetSubscriptOffset(nscoord& aResult);
NS_IMETHOD GetStrikeout(nscoord& aOffset, nscoord& aSize);
NS_IMETHOD GetUnderline(nscoord& aOffset, nscoord& aSize);
NS_IMETHOD GetHeight(nscoord &aHeight);
NS_IMETHOD GetInternalLeading(nscoord &aLeading);
NS_IMETHOD GetExternalLeading(nscoord &aLeading);
NS_IMETHOD GetEmHeight(nscoord &aHeight);
NS_IMETHOD GetEmAscent(nscoord &aAscent);
NS_IMETHOD GetEmDescent(nscoord &aDescent);
NS_IMETHOD GetMaxHeight(nscoord &aHeight);
NS_IMETHOD GetMaxAscent(nscoord &aAscent);
NS_IMETHOD GetMaxDescent(nscoord &aDescent);
NS_IMETHOD GetMaxAdvance(nscoord &aAdvance);
NS_IMETHOD GetLanguage(nsIAtom** aLanguage);
NS_IMETHOD GetFontHandle(nsFontHandle &aHandle);
NS_IMETHOD GetAveCharWidth(nscoord& aAveCharWidth);
NS_IMETHOD GetSpaceWidth(nscoord& aSpaceCharWidth);
virtual PRInt32 GetMaxStringLength();
virtual nsresult GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth,
nsRenderingContext *aContext);
virtual nsresult GetWidth(const PRUnichar* aString, PRUint32 aLength,
nscoord& aWidth, PRInt32 *aFontID,
nsRenderingContext *aContext);
// Get the text dimensions for this string
virtual nsresult GetTextDimensions(const PRUnichar* aString,
PRUint32 aLength,
nsTextDimensions& aDimensions,
PRInt32* aFontID);
virtual nsresult GetTextDimensions(const char* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
PRInt32 aNumBreaks,
nsTextDimensions& aDimensions,
PRInt32& aNumCharsFit,
nsTextDimensions& aLastWordDimensions,
PRInt32* aFontID);
virtual nsresult GetTextDimensions(const PRUnichar* aString,
PRInt32 aLength,
PRInt32 aAvailWidth,
PRInt32* aBreaks,
PRInt32 aNumBreaks,
nsTextDimensions& aDimensions,
PRInt32& aNumCharsFit,
nsTextDimensions& aLastWordDimensions,
PRInt32* aFontID);
// Draw a string using this font handle on the surface passed in.
virtual nsresult DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
const nscoord* aSpacing,
nsRenderingContext *aContext);
virtual nsresult DrawString(const PRUnichar* aString, PRUint32 aLength,
nscoord aX, nscoord aY,
PRInt32 aFontID,
const nscoord* aSpacing,
nsRenderingContext *aContext)
{
NS_ASSERTION(!aSpacing, "Spacing not supported here");
return DrawString(aString, aLength, aX, aY, aContext, aContext);
}
virtual nsresult DrawString(const PRUnichar* aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nsRenderingContext *aContext,
nsRenderingContext *aTextRunConstructionContext);
#ifdef MOZ_MATHML
// These two functions get the bounding metrics for this handle,
// updating the aBoundingMetrics in app units.
virtual nsresult GetBoundingMetrics(const char *aString, PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics);
virtual nsresult GetBoundingMetrics(const PRUnichar *aString,
PRUint32 aLength,
nsRenderingContext *aContext,
nsBoundingMetrics &aBoundingMetrics);
#endif /* MOZ_MATHML */
// Set the direction of the text rendering
virtual nsresult SetRightToLeftText(PRBool aIsRTL);
virtual PRBool GetRightToLeftText();
virtual void SetTextRunRTL(PRBool aIsRTL) { mTextRunRTL = aIsRTL; }
virtual gfxFontGroup* GetThebesFontGroup() { return mFontGroup; }
virtual gfxUserFontSet* GetUserFontSet();
PRBool GetRightToLeftTextRunMode() {
return mTextRunRTL;
}
protected:
const gfxFont::Metrics& GetMetrics() const;
class AutoTextRun {
public:
AutoTextRun(nsThebesFontMetrics* aMetrics, nsRenderingContext* aRC,
const char* aString, PRInt32 aLength) {
mTextRun = gfxTextRunCache::MakeTextRun(
reinterpret_cast<const PRUint8*>(aString), aLength,
aMetrics->mFontGroup, aRC->ThebesContext(),
aMetrics->mP2A,
ComputeFlags(aMetrics));
}
AutoTextRun(nsThebesFontMetrics* aMetrics, nsRenderingContext* aRC,
const PRUnichar* aString, PRInt32 aLength) {
mTextRun = gfxTextRunCache::MakeTextRun(
aString, aLength, aMetrics->mFontGroup,
aRC->ThebesContext(),
aMetrics->mP2A,
ComputeFlags(aMetrics));
}
gfxTextRun* operator->() { return mTextRun.get(); }
gfxTextRun* get() { return mTextRun.get(); }
private:
gfxTextRunCache::AutoTextRun mTextRun;
static PRUint32 ComputeFlags(nsThebesFontMetrics* aMetrics) {
PRUint32 flags = 0;
if (aMetrics->GetRightToLeftTextRunMode()) {
flags |= gfxTextRunFactory::TEXT_IS_RTL;
}
return flags;
}
};
friend class AutoTextRun;
nsRefPtr<gfxFontGroup> mFontGroup;
gfxFontStyle *mFontStyle;
private:
nsThebesDeviceContext *mDeviceContext;
nsCOMPtr<nsIAtom> mLanguage;
PRInt32 mP2A;
PRPackedBool mIsRightToLeft;
PRPackedBool mTextRunRTL;
};
#endif /* NSTHEBESFONTMETRICS__H__ */

5
gfx/src/nsThebesGfxFactory.cpp
View File

@ -44,11 +44,9 @@
#include "nsThebesDeviceContext.h"
#include "nsThebesRegion.h"
#include "nsThebesFontMetrics.h"
#include "nsThebesFontEnumerator.h"
#include "gfxPlatform.h"
NS_GENERIC_FACTORY_CONSTRUCTOR(nsThebesFontMetrics)
NS_GENERIC_FACTORY_CONSTRUCTOR(nsThebesDeviceContext)
NS_GENERIC_FACTORY_CONSTRUCTOR(nsThebesRegion)
NS_GENERIC_FACTORY_CONSTRUCTOR(nsThebesFontEnumerator)
@ -94,14 +92,12 @@ nsScriptableRegionConstructor(nsISupports *aOuter, REFNSIID aIID, void **aResult
return rv;
}
NS_DEFINE_NAMED_CID(NS_FONT_METRICS_CID);
NS_DEFINE_NAMED_CID(NS_FONT_ENUMERATOR_CID);
NS_DEFINE_NAMED_CID(NS_DEVICE_CONTEXT_CID);
NS_DEFINE_NAMED_CID(NS_REGION_CID);
NS_DEFINE_NAMED_CID(NS_SCRIPTABLE_REGION_CID);
static const mozilla::Module::CIDEntry kThebesCIDs[] = {
{ &kNS_FONT_METRICS_CID, false, NULL, nsThebesFontMetricsConstructor },
{ &kNS_FONT_ENUMERATOR_CID, false, NULL, nsThebesFontEnumeratorConstructor },
{ &kNS_DEVICE_CONTEXT_CID, false, NULL, nsThebesDeviceContextConstructor },
{ &kNS_REGION_CID, false, NULL, nsThebesRegionConstructor },
@ -110,7 +106,6 @@ static const mozilla::Module::CIDEntry kThebesCIDs[] = {
};
static const mozilla::Module::ContractIDEntry kThebesContracts[] = {
{ "@mozilla.org/gfx/fontmetrics;1", &kNS_FONT_METRICS_CID },
{ "@mozilla.org/gfx/fontenumerator;1", &kNS_FONT_ENUMERATOR_CID },
{ "@mozilla.org/gfx/devicecontext;1", &kNS_DEVICE_CONTEXT_CID },
{ "@mozilla.org/gfx/region/nsThebes;1", &kNS_REGION_CID },