mozilla
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gecko-dev
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moved GetWidth() APIs from fontmetrics to the renderingcontext.

This commit is contained in:
michaelp%netscape.com 1998-10-02 01:07:56 +00:00
Родитель 4cd7cc11a7
Коммит 85317fe4bd
17 изменённых файлов: 292 добавлений и 211 удалений
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79
gfx/src/mac/nsFontMetricsMac.cpp
Просмотреть файл

@ -310,85 +310,6 @@ nsFontMetricsMac :: GetUnderline(nscoord& aOffset, nscoord& aSize)
return NS_OK;
}
NS_IMETHODIMP nsFontMetricsMac :: GetWidth(char ch, nscoord &aWidth)
{
char buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP nsFontMetricsMac :: GetWidth(PRUnichar ch, nscoord &aWidth)
{
PRUnichar buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP nsFontMetricsMac :: GetWidth(const nsString& aString, nscoord &aWidth)
{
return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
}
NS_IMETHODIMP nsFontMetricsMac :: GetWidth(const char *aString, nscoord &aWidth)
{
return GetWidth(aString, strlen(aString), aWidth);
}
NS_IMETHODIMP
nsFontMetricsMac :: GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth)
{
if (nsnull == mContext)
{
aWidth = 0;
return NS_ERROR_NULL_POINTER;
}
if (mFont != nsnull)
nsFontMetricsMac::SetFont(*mFont, mContext);
float dev2app;
mContext->GetDevUnitsToAppUnits(dev2app);
short textWidth = ::TextWidth(aString, 0, aLength);
aWidth = NSToCoordRound(float(textWidth) * dev2app);
if (mFont != nsnull) {
switch (mFont->style)
{
case NS_FONT_STYLE_ITALIC:
case NS_FONT_STYLE_OBLIQUE:
nscoord aAdvance;
GetMaxAdvance(aAdvance);
aWidth += aAdvance;
break;
}
}
return NS_OK;
}
NS_IMETHODIMP nsFontMetricsMac :: GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth)
{
nsString nsStr;
nsStr.SetString(aString, aLength);
char* cStr = nsStr.ToNewCString();
GetWidth(cStr, aLength, aWidth);
delete[] cStr;
return NS_OK;
}
NS_IMETHODIMP nsFontMetricsMac :: GetWidth(nsIDeviceContext *aContext, const nsString& aString, nscoord &aWidth)
{
nsIDeviceContext* saveContext = mContext;
mContext = aContext;
char* cStr = aString.ToNewCString();
nsresult res = GetWidth(cStr, aString.Length(), aWidth);
delete[] cStr;
mContext = saveContext;
return res;
}
NS_IMETHODIMP nsFontMetricsMac :: GetHeight(nscoord &aHeight)
{
aHeight = mHeight;

7
gfx/src/mac/nsFontMetricsMac.h
Просмотреть файл

@ -48,13 +48,6 @@ public:
NS_IMETHOD GetSubscriptOffset(nscoord& aResult);
NS_IMETHOD GetStrikeout(nscoord& aOffset, nscoord& aSize);
NS_IMETHOD GetUnderline(nscoord& aOffset, nscoord& aSize);
NS_IMETHOD GetWidth(char aC, nscoord &aWidth);
NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth);
NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char *aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth);
NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth);
NS_IMETHOD GetWidth(nsIDeviceContext *aContext, const nsString& aString, nscoord &aWidth);
NS_IMETHOD GetHeight(nscoord &aHeight);
NS_IMETHOD GetLeading(nscoord &aLeading);
NS_IMETHOD GetMaxAscent(nscoord &aAscent);

77
gfx/src/mac/nsRenderingContextMac.cpp
Просмотреть файл

@ -547,15 +547,15 @@ void nsRenderingContextMac :: SetFont(nsIFontMetrics *aFontMetrics)
if (mFontMetrics)
{
//nsFont font;
nsFont *font;
//XXX this is incredibly hokey. nothing should really
//be done with the fontmetrics passed in (either here or in
//SetFont() above) until you want to actually *use* the font
//for somethin. MMP
//mFontMetrics->GetFont(&font);
//nsFontMetricsMac::SetFont(font, mContext);
mFontMetrics->GetFont(font);
nsFontMetricsMac::SetFont(*font, mContext);
}
}
@ -886,6 +886,77 @@ Rect therect;
//------------------------------------------------------------------------
NS_IMETHODIMP nsRenderingContextMac :: GetWidth(char ch, nscoord &aWidth)
{
char buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
//------------------------------------------------------------------------
NS_IMETHODIMP nsRenderingContextMac :: GetWidth(PRUnichar ch, nscoord &aWidth)
{
PRUnichar buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
//------------------------------------------------------------------------
NS_IMETHODIMP nsRenderingContextMac :: GetWidth(const nsString& aString, nscoord &aWidth)
{
return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
}
//------------------------------------------------------------------------
NS_IMETHODIMP nsRenderingContextMac :: GetWidth(const char *aString, nscoord &aWidth)
{
return GetWidth(aString, strlen(aString), aWidth);
}
//------------------------------------------------------------------------
NS_IMETHODIMP
nsRenderingContextMac :: GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth)
{
nsFont *font;
short textWidth = ::TextWidth(aString, 0, aLength);
aWidth = NSToCoordRound(float(textWidth) * mP2T);
mFontMetrics->GetFont(font);
if (font != nsnull) {
switch (font->style)
{
case NS_FONT_STYLE_ITALIC:
case NS_FONT_STYLE_OBLIQUE:
nscoord aAdvance;
mFontMetrics->GetMaxAdvance(aAdvance);
aWidth += aAdvance;
break;
}
}
return NS_OK;
}
//------------------------------------------------------------------------
NS_IMETHODIMP nsRenderingContextMac :: GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth)
{
nsString nsStr;
nsStr.SetString(aString, aLength);
char* cStr = nsStr.ToNewCString();
GetWidth(cStr, aLength, aWidth);
delete[] cStr;
return NS_OK;
}
//------------------------------------------------------------------------
void nsRenderingContextMac :: DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nscoord aWidth)

6
gfx/src/mac/nsRenderingContextMac.h
Просмотреть файл

@ -99,6 +99,12 @@ public:
virtual void DrawArc(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight,float aStartAngle, float aEndAngle);
virtual void FillArc(const nsRect& aRect,float aStartAngle, float aEndAngle);
virtual void FillArc(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight,float aStartAngle, float aEndAngle);
NS_IMETHOD GetWidth(char aC, nscoord &aWidth);
NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth);
NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char *aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth);
NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth);
virtual void DrawString(const char *aString, PRUint32 aLength,nscoord aX, nscoord aY,nscoord aWidth);
virtual void DrawString(const PRUnichar *aString, PRUint32 aLength, nscoord aX, nscoord aY,nscoord aWidth);
virtual void DrawString(const nsString& aString, nscoord aX, nscoord aY,nscoord aWidth);

79
gfx/src/motif/nsFontMetricsUnix.cpp
Просмотреть файл

@ -33,8 +33,6 @@ nsFontMetricsUnix :: nsFontMetricsUnix()
mFont = nsnull;
mFontHandle = nsnull;
mFontInfo = nsnull;
mXstring = nsnull;
mXstringSize = 0;
}
nsFontMetricsUnix :: ~nsFontMetricsUnix()
@ -44,9 +42,6 @@ nsFontMetricsUnix :: ~nsFontMetricsUnix()
mFont = nsnull;
}
if (nsnull != mXstring)
PR_Free(mXstring);
if (nsnull != mFontHandle) {
nsNativeWidget widget;
mContext->GetNativeWidget(widget);
@ -309,80 +304,6 @@ nsFontMetricsUnix :: GetUnderline(nscoord& aOffset, nscoord& aSize)
return NS_OK;
}
NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(char ch, nscoord &aWidth)
{
char buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(PRUnichar ch, nscoord &aWidth)
{
PRUnichar buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const nsString& aString, nscoord &aWidth)
{
return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
}
NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const char *aString, nscoord &aWidth)
{
return GetWidth(aString, strlen(aString), aWidth);
}
NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const char *aString,
PRUint32 aLength, nscoord &aWidth)
{
PRInt32 rc = 0 ;
rc = (PRInt32) ::XTextWidth(mFontInfo, aString, aLength);
float dev2app;
mContext->GetDevUnitsToAppUnits(dev2app);
aWidth = nscoord(rc * dev2app);
return NS_OK;
}
NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const PRUnichar *aString,
PRUint32 aLength,
nscoord &aWidth)
{
XChar2b * thischar ;
PRUint16 aunichar;
nscoord width ;
PRUint32 i ;
PRUint32 desiredSize = sizeof(XChar2b) * aLength;
// Make the temporary buffer larger if needed.
if (nsnull == mXstring) {
mXstring = (XChar2b *) PR_Malloc(desiredSize);
mXstringSize = desiredSize;
}
else {
if (mXstringSize < desiredSize) {
mXstring = (XChar2b *) PR_Realloc(mXstring, desiredSize);
mXstringSize = desiredSize;
}
}
for (i=0; i<aLength; i++) {
thischar = (mXstring+i);
aunichar = (PRUint16)(*(aString+i));
thischar->byte2 = (aunichar & 0xff);
thischar->byte1 = (aunichar & 0xff00) >> 8;
}
width = ::XTextWidth16(mFontInfo, mXstring, aLength);
float dev2app;
mContext->GetDevUnitsToAppUnits(dev2app);
aWidth = nscoord(width * dev2app);
return NS_OK;
}
NS_IMETHODIMP nsFontMetricsUnix :: GetHeight(nscoord &aHeight)
{
aHeight = mHeight;

9
gfx/src/motif/nsFontMetricsUnix.h
Просмотреть файл

@ -50,12 +50,6 @@ public:
NS_IMETHOD GetSubscriptOffset(nscoord& aResult);
NS_IMETHOD GetStrikeout(nscoord& aOffset, nscoord& aSize);
NS_IMETHOD GetUnderline(nscoord& aOffset, nscoord& aSize);
NS_IMETHOD GetWidth(char aC, nscoord &aWidth);
NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth);
NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char *aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char *aString, PRUint32 aLength, nscoord &aWidth);
NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth);
NS_IMETHOD GetHeight(nscoord &aHeight);
NS_IMETHOD GetLeading(nscoord &aLeading);
@ -85,9 +79,6 @@ protected:
nscoord mMaxAscent;
nscoord mMaxDescent;
nscoord mMaxAdvance;
XChar2b * mXstring;
PRUint32 mXstringSize;
};
#endif

77
gfx/src/motif/nsRenderingContextUnix.cpp
Просмотреть файл

@ -1038,6 +1038,83 @@ void nsRenderingContextUnix :: FillArc(nscoord aX, nscoord aY, nscoord aWidth, n
NSToIntRound(aEndAngle * 64.0f));
}
NS_IMETHODIMP nsRenderingContextUnix :: GetWidth(char ch, nscoord &aWidth)
{
char buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP nsRenderingContextUnix :: GetWidth(PRUnichar ch, nscoord &aWidth)
{
PRUnichar buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP nsRenderingContextUnix :: GetWidth(const nsString& aString, nscoord &aWidth)
{
return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
}
NS_IMETHODIMP nsRenderingContextUnix :: GetWidth(const char *aString, nscoord &aWidth)
{
return GetWidth(aString, strlen(aString), aWidth);
}
NS_IMETHODIMP nsRenderingContextUnix :: GetWidth(const char *aString,
PRUint32 aLength, nscoord &aWidth)
{
PRInt32 rc;
XFontStruct *font;
font = ::XQueryFont(mRenderingSurface->display, (Font)mCurrFontHandle);
rc = (PRInt32) ::XTextWidth(font, aString, aLength);
aWidth = nscoord(rc * mP2T);
return NS_OK;
}
NS_IMETHODIMP nsRenderingContextUnix :: GetWidth(const PRUnichar *aString,
PRUint32 aLength,
nscoord &aWidth)
{
XChar2b * thischar ;
PRUint16 aunichar;
nscoord width ;
PRUint32 i ;
PRUint32 desiredSize = sizeof(XChar2b) * aLength;
XFontStruct *font;
// Make the temporary buffer larger if needed.
if (nsnull == mDrawStringBuf) {
mDrawStringBuf = (XChar2b *) PR_Malloc(aLength);
mDrawStringSize = aLength;
}
else {
if (mDrawStringSize < PRInt32(aLength)) {
mDrawStringBuf = (XChar2b *) PR_Realloc(mDrawStringBuf, aLength);
mDrawStringSize = aLength;
}
}
// Translate the unicode data into XChar2b's
XChar2b* xc = mDrawStringBuf;
XChar2b* end = xc + aLength;
while (xc < end) {
PRUnichar ch = *aString++;
xc->byte2 = (ch & 0xff);
xc->byte1 = (ch & 0xff00) >> 8;
xc++;
}
font = ::XQueryFont(mRenderingSurface->display, (Font)mCurrFontHandle);
width = ::XTextWidth16(font, mDrawStringBuf, aLength);
aWidth = nscoord(width * mP2T);
return NS_OK;
}
void nsRenderingContextUnix :: DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nscoord aWidth)

7
gfx/src/motif/nsRenderingContextUnix.h
Просмотреть файл

@ -127,6 +127,13 @@ public:
virtual void FillArc(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight,
float aStartAngle, float aEndAngle);
NS_IMETHOD GetWidth(char aC, nscoord &aWidth);
NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth);
NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char *aString, nscoord &aWidth);
NS_IMETHOD GetWidth(const char *aString, PRUint32 aLength, nscoord &aWidth);
NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth);
virtual void DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nscoord aWidth);

22
gfx/src/nsDeviceContext.cpp
Просмотреть файл

@ -183,6 +183,28 @@ NS_IMETHODIMP DeviceContextImpl :: CreateRenderingContext(nsIView *aView, nsIRen
return rv;
}
NS_IMETHODIMP DeviceContextImpl :: CreateRenderingContext(nsIWidget *aWidget, nsIRenderingContext *&aContext)
{
nsIRenderingContext *pContext;
nsresult rv;
static NS_DEFINE_IID(kRCCID, NS_RENDERING_CONTEXT_CID);
static NS_DEFINE_IID(kRCIID, NS_IRENDERING_CONTEXT_IID);
aContext = nsnull;
rv = nsRepository::CreateInstance(kRCCID, nsnull, kRCIID, (void **)&pContext);
if (NS_OK == rv) {
rv = InitRenderingContext(pContext, aWidget);
if (NS_OK != rv) {
NS_RELEASE(pContext);
}
}
aContext = pContext;
return rv;
}
NS_IMETHODIMP DeviceContextImpl :: InitRenderingContext(nsIRenderingContext *aContext, nsIWidget *aWin)
{
return (aContext->Init(this, aWin));

1
gfx/src/nsDeviceContext.h
Просмотреть файл

@ -36,6 +36,7 @@ public:
NS_IMETHOD Init(nsNativeWidget aWidget);
NS_IMETHOD CreateRenderingContext(nsIView *aView, nsIRenderingContext *&aContext);
NS_IMETHOD CreateRenderingContext(nsIWidget *aWidget, nsIRenderingContext *&aContext);
NS_IMETHOD InitRenderingContext(nsIRenderingContext *aContext, nsIWidget *aWindow);
NS_IMETHOD GetDevUnitsToTwips(float &aDevUnitsToTwips) const;

1
gfx/src/nsIDeviceContext.h
Просмотреть файл

@ -68,6 +68,7 @@ public:
NS_IMETHOD Init(nsNativeWidget aWidget) = 0;
NS_IMETHOD CreateRenderingContext(nsIView *aView, nsIRenderingContext *&aContext) = 0;
NS_IMETHOD CreateRenderingContext(nsIWidget *aWidget, nsIRenderingContext *&aContext) = 0;
NS_IMETHOD InitRenderingContext(nsIRenderingContext *aContext, nsIWidget *aWindow) = 0;
//these are queries to figure out how large an output unit

35
gfx/src/nsIFontMetrics.h
Просмотреть файл

@ -56,8 +56,7 @@ public:
/**
* Destroy this font metrics. This breaks the association between
* the font metrics and the device context (which means that calls
* to GetWidth following this call will fail).
* the font metrics and the device context.
*/
NS_IMETHOD Destroy() = 0;
@ -94,38 +93,6 @@ public:
*/
NS_IMETHOD GetUnderline(nscoord& aOffset, nscoord& aSize) = 0;
/**
* Returns the width (in app units) of an 8-bit character
*/
NS_IMETHOD GetWidth(char aC, nscoord &aWidth) = 0;
/**
* Returns the width (in app units) of a unicode character
*/
NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth) = 0;
/**
* Returns the width (in app units) of an nsString
*/
NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth) = 0;
/**
* Returns the width (in app units) of an 8-bit character string
*/
NS_IMETHOD GetWidth(const char* aString, nscoord& aWidth) = 0;
/**
* Returns the width (in app units) of an 8-bit character string
*/
NS_IMETHOD GetWidth(const char* aString, PRUint32 aLength,
nscoord& aWidth) = 0;
/**
* Returns the width (in app units) of a Unicode character string
*/
NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength,
nscoord &aWidth) = 0;
/**
* Returns the height (in app units) of the font. This is ascent plus descent
* plus any internal leading

32
gfx/src/nsIRenderingContext.h
Просмотреть файл

@ -377,6 +377,38 @@ public:
virtual void FillArc(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight,
float aStartAngle, float aEndAngle) = 0;
/**
* Returns the width (in app units) of an 8-bit character
*/
NS_IMETHOD GetWidth(char aC, nscoord &aWidth) = 0;
/**
* Returns the width (in app units) of a unicode character
*/
NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth) = 0;
/**
* Returns the width (in app units) of an nsString
*/
NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth) = 0;
/**
* Returns the width (in app units) of an 8-bit character string
*/
NS_IMETHOD GetWidth(const char* aString, nscoord& aWidth) = 0;
/**
* Returns the width (in app units) of an 8-bit character string
*/
NS_IMETHOD GetWidth(const char* aString, PRUint32 aLength,
nscoord& aWidth) = 0;
/**
* Returns the width (in app units) of a Unicode character string
*/
NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength,
nscoord &aWidth) = 0;
/**
* Draw a string in the RenderingContext
* @param aString The string to draw

4
gfx/src/windows/nsFontMetricsWin.cpp
Просмотреть файл

@ -294,6 +294,8 @@ nsFontMetricsWin :: GetUnderline(nscoord& aOffset, nscoord& aSize)
return NS_OK;
}
#if 0
NS_IMETHODIMP
nsFontMetricsWin :: GetWidth(char ch, nscoord& aWidth)
{
@ -374,6 +376,8 @@ nsFontMetricsWin :: GetWidth(const PRUnichar *aString,
return NS_OK;
}
#endif
NS_IMETHODIMP
nsFontMetricsWin :: GetHeight(nscoord &aHeight)
{

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

@ -50,6 +50,7 @@ public:
NS_IMETHOD GetSubscriptOffset(nscoord& aResult);
NS_IMETHOD GetStrikeout(nscoord& aOffset, nscoord& aSize);
NS_IMETHOD GetUnderline(nscoord& aOffset, nscoord& aSize);
#if 0
NS_IMETHOD GetWidth(char aC, nscoord& aWidth);
NS_IMETHOD GetWidth(PRUnichar aC, nscoord& aWidth);
NS_IMETHOD GetWidth(const nsString& aString, nscoord& aWidth);
@ -57,6 +58,7 @@ public:
NS_IMETHOD GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth);
NS_IMETHOD GetWidth(const PRUnichar* aString, PRUint32 aLength,
nscoord& aWidth);
#endif
NS_IMETHOD GetHeight(nscoord &aHeight);
NS_IMETHOD GetLeading(nscoord &aLeading);

57
gfx/src/windows/nsRenderingContextWin.cpp
Просмотреть файл

@ -1260,6 +1260,63 @@ void nsRenderingContextWin :: FillArc(nscoord aX, nscoord aY, nscoord aWidth, ns
::Pie(mDC, aX, aY, aX + aWidth, aY + aHeight, sx, sy, ex, ey);
}
NS_IMETHODIMP
nsRenderingContextWin :: GetWidth(char ch, nscoord& aWidth)
{
char buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP
nsRenderingContextWin :: GetWidth(PRUnichar ch, nscoord &aWidth)
{
PRUnichar buf[1];
buf[0] = ch;
return GetWidth(buf, 1, aWidth);
}
NS_IMETHODIMP
nsRenderingContextWin :: GetWidth(const char* aString, nscoord& aWidth)
{
return GetWidth(aString, strlen(aString), aWidth);
}
NS_IMETHODIMP
nsRenderingContextWin :: GetWidth(const char* aString,
PRUint32 aLength,
nscoord& aWidth)
{
SIZE size;
SetupFontAndColor();
::GetTextExtentPoint32(mDC, aString, aLength, &size);
aWidth = NSToCoordRound(float(size.cx) * mP2T);
return NS_OK;
}
NS_IMETHODIMP
nsRenderingContextWin :: GetWidth(const nsString& aString, nscoord& aWidth)
{
return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
}
NS_IMETHODIMP
nsRenderingContextWin :: GetWidth(const PRUnichar *aString,
PRUint32 aLength,
nscoord &aWidth)
{
SIZE size;
SetupFontAndColor();
::GetTextExtentPoint32W(mDC, aString, aLength, &size);
aWidth = NSToCoordRound(float(size.cx) * mP2T);
return NS_OK;
}
void nsRenderingContextWin :: DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nscoord aWidth)

8
gfx/src/windows/nsRenderingContextWin.h
Просмотреть файл

@ -119,6 +119,14 @@ public:
virtual void FillArc(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight,
float aStartAngle, float aEndAngle);
NS_IMETHOD GetWidth(char aC, nscoord& aWidth);
NS_IMETHOD GetWidth(PRUnichar aC, nscoord& aWidth);
NS_IMETHOD GetWidth(const nsString& aString, nscoord& aWidth);
NS_IMETHOD GetWidth(const char* aString, nscoord& aWidth);
NS_IMETHOD GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth);
NS_IMETHOD GetWidth(const PRUnichar* aString, PRUint32 aLength,
nscoord& aWidth);
virtual void DrawString(const char *aString, PRUint32 aLength,
nscoord aX, nscoord aY,
nscoord aWidth);