зеркало из https://github.com/mozilla/pjs.git
Implement revised font metrics API
This commit is contained in:
kipp%netscape.com
Родитель
95e3ecef7e
Коммит
0aa9d83435
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@ -187,6 +187,13 @@ NS_IMETHODIMP nsFontMetricsUnix :: Init(const nsFont& aFont, nsIDeviceContext* a
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFontMetricsUnix :: Destroy()
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{
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// NS_IF_RELEASE(mDeviceContext);
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return NS_OK;
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}
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char * nsFontMetricsUnix::PickAppropriateSize(char **names, XFontStruct *fonts, int cnt, nscoord desired)
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{
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int idx;
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@ -267,22 +274,16 @@ void nsFontMetricsUnix::RealizeFont()
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(char ch, nscoord &aWidth)
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{
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if (ch < 256)
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aWidth = mCharWidths[ch];
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else
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aWidth = 0; //XXX
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return NS_OK;
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char buf[1];
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buf[0] = ch;
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return GetWidth(buf, 1, aWidth);
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}
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(PRUnichar ch, nscoord &aWidth)
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{
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if (ch < 256)
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aWidth = mCharWidths[PRUint8(ch)];
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else
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aWidth = 0;/* XXX */
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return NS_OK;
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PRUnichar buf[1];
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buf[0] = ch;
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return GetWidth(buf, 1, aWidth);
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}
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const nsString& aString, nscoord &aWidth)
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@ -291,10 +292,16 @@ NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const nsString& aString, nscoord &aW
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}
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const char *aString, nscoord &aWidth)
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{
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return GetWidth(aString, strlen(aString), aWidth);
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}
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const char *aString,
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PRUint32 aLength, nscoord &aWidth)
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{
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PRInt32 rc = 0 ;
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rc = (PRInt32) ::XTextWidth(mFontInfo, aString, nsCRT::strlen(aString));
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rc = (PRInt32) ::XTextWidth(mFontInfo, aString, aLength);
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float dev2app;
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mContext->GetDevUnitsToAppUnits(dev2app);
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@ -339,9 +346,7 @@ NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const PRUnichar *aString,
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return NS_OK;
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}
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// XXX this needs to be implemented
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(nsIDeviceContext *aContext,
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const nsString& aString,
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(const nsString& aString,
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nscoord &aWidth)
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{
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return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
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@ -377,12 +382,6 @@ NS_IMETHODIMP nsFontMetricsUnix :: GetMaxAdvance(nscoord &aAdvance)
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsUnix :: GetWidths(const nscoord *&aWidths)
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{
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aWidths = mCharWidths;
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsUnix :: GetFont(const nsFont*& aFont)
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{
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aFont = mFont;
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@ -43,20 +43,21 @@ public:
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NS_DECL_ISUPPORTS
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NS_IMETHOD Init(const nsFont& aFont, nsIDeviceContext* aContext);
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NS_IMETHOD Destroy();
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NS_IMETHOD GetWidth(char aC, nscoord &aWidth);
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NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth);
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NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth);
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NS_IMETHOD GetWidth(const char *aString, nscoord &aWidth);
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NS_IMETHOD GetWidth(const char *aString, PRUint32 aLength, nscoord &aWidth);
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NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth);
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NS_IMETHOD GetWidth(nsIDeviceContext *aContext, const nsString& aString, nscoord &aWidth);
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NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth);
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NS_IMETHOD GetHeight(nscoord &aHeight);
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NS_IMETHOD GetLeading(nscoord &aLeading);
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NS_IMETHOD GetMaxAscent(nscoord &aAscent);
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NS_IMETHOD GetMaxDescent(nscoord &aDescent);
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NS_IMETHOD GetMaxAdvance(nscoord &aAdvance);
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NS_IMETHOD GetWidths(const nscoord *&aWidths);
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NS_IMETHOD GetFont(const nsFont*& aFont);
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NS_IMETHOD GetFontHandle(nsFontHandle &aHandle);
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@ -38,16 +38,20 @@ nsFontMetricsWin :: ~nsFontMetricsWin()
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::DeleteObject(mFontHandle);
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mFontHandle = NULL;
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}
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NS_IF_RELEASE(mDeviceContext);
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}
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#ifdef LEAK_DEBUG
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nsrefcnt nsFontMetricsWin :: AddRef()
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nsrefcnt
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nsFontMetricsWin :: AddRef()
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{
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NS_PRECONDITION(mRefCnt != 0, "resurrecting a dead object");
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return ++mRefCnt;
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}
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nsrefcnt nsFontMetricsWin :: Release()
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nsrefcnt
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nsFontMetricsWin :: Release()
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{
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NS_PRECONDITION(mRefCnt != 0, "too many release's");
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if (--mRefCnt == 0) {
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@ -56,7 +60,8 @@ nsrefcnt nsFontMetricsWin :: Release()
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return mRefCnt;
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}
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nsresult nsFontMetricsWin :: QueryInterface(REFNSIID aIID, void** aInstancePtr)
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nsresult
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nsFontMetricsWin :: QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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@ -82,21 +87,27 @@ nsresult nsFontMetricsWin :: QueryInterface(REFNSIID aIID, void** aInstancePtr)
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NS_IMPL_ISUPPORTS(nsFontMetricsWin, kIFontMetricsIID)
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#endif
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// Note: The presentation context has a reference to this font
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// metrics, therefore avoid circular references by not AddRef'ing the
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// presentation context.
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NS_IMETHODIMP nsFontMetricsWin :: Init(const nsFont& aFont, nsIDeviceContext *aContext)
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NS_IMETHODIMP
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nsFontMetricsWin :: Init(const nsFont& aFont, nsIDeviceContext *aContext)
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{
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mFont = new nsFont(aFont);
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RealizeFont(aContext);
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mDeviceContext = aContext;
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NS_ADDREF(aContext);
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RealizeFont();
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return NS_OK;
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}
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static void MapGenericFamilyToFont(const nsString& aGenericFamily, nsIDeviceContext* aDC,
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nsString& aFontFace)
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NS_IMETHODIMP
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nsFontMetricsWin :: Destroy()
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{
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NS_IF_RELEASE(mDeviceContext);
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return NS_OK;
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}
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static void
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MapGenericFamilyToFont(const nsString& aGenericFamily,
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nsIDeviceContext* aDC,
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nsString& aFontFace)
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{
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// the CSS generic names (conversions from Nav for now)
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// XXX this need to check availability with the dc
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@ -131,7 +142,8 @@ struct FontEnumData {
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TCHAR* mFaceName;
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};
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static PRBool FontEnumCallback(const nsString& aFamily, PRBool aGeneric, void *aData)
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static PRBool
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FontEnumCallback(const nsString& aFamily, PRBool aGeneric, void *aData)
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{
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FontEnumData* data = (FontEnumData*)aData;
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if (aGeneric) {
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@ -152,7 +164,8 @@ static PRBool FontEnumCallback(const nsString& aFamily, PRBool aGeneric, void *a
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return PR_TRUE;
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}
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void nsFontMetricsWin::RealizeFont(nsIDeviceContext *aContext)
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void
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nsFontMetricsWin::RealizeFont()
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{
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// Fill in logFont structure; stolen from awt
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LOGFONT logFont;
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@ -174,14 +187,14 @@ void nsFontMetricsWin::RealizeFont(nsIDeviceContext *aContext)
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? FW_BOLD : FW_NORMAL;
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logFont.lfItalic = (mFont->style & NS_FONT_STYLE_ITALIC)
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? TRUE : FALSE;
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float app2dev;
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aContext->GetAppUnitsToDevUnits(app2dev);
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float app2twip;
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aContext->GetDevUnitsToTwips(app2twip);
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float app2dev, app2twip;
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mDeviceContext->GetAppUnitsToDevUnits(app2dev);
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mDeviceContext->GetDevUnitsToTwips(app2twip);
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app2twip *= app2dev;
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float rounded = ((float)NSIntPointsToTwips(NSTwipsToFloorIntPoints(nscoord(mFont->size * app2twip)))) / app2twip;
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// round font size off to floor point size to be windows compatible
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// round font size off to floor point size to be windows compatible
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// logFont.lfHeight = - NSToIntRound(rounded * app2dev); // this is proper (windows) rounding
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logFont.lfHeight = - LONG(rounded * app2dev); // this floor rounding is to make ours compatible with Nav 4.0
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@ -191,23 +204,22 @@ void nsFontMetricsWin::RealizeFont(nsIDeviceContext *aContext)
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#endif
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logFont.lfFaceName[0] = '\0';
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FontEnumData data(aContext, logFont.lfFaceName);
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FontEnumData data(mDeviceContext, logFont.lfFaceName);
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mFont->EnumerateFamilies(FontEnumCallback, &data);
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// Create font handle from font spec
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mFontHandle = ::CreateFontIndirect(&logFont);
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//fprintf(stderr, "fFontHandle=%x\n", fFontHandle);
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// Find font metrics and character widths
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nsNativeWidget widget;
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aContext->GetNativeWidget(widget);
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mDeviceContext->GetNativeWidget(widget);
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HWND win = (HWND)widget;
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HDC dc = ::GetDC(win);
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HFONT oldfont = (HFONT)::SelectObject(dc, (HGDIOBJ) mFontHandle);
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// Get font metrics
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float dev2app;
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aContext->GetDevUnitsToAppUnits(dev2app);
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mDeviceContext->GetDevUnitsToAppUnits(dev2app);
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TEXTMETRIC metrics;
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::GetTextMetrics(dc, &metrics);
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mHeight = nscoord(metrics.tmHeight * dev2app);
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@ -217,155 +229,138 @@ void nsFontMetricsWin::RealizeFont(nsIDeviceContext *aContext)
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mMaxAscent = nscoord(metrics.tmAscent * dev2app);
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mMaxDescent = nscoord(metrics.tmDescent * dev2app);
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mMaxAdvance = nscoord(metrics.tmMaxCharWidth * dev2app);
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#if 0
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fprintf(stderr, "fontmetrics: height=%d ascent=%d descent=%d leading=%d\n",
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fHeight, fAscent, fDescent, fLeading);
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#endif
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// Get character widths in twips
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int widths[256];
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::GetCharWidth(dc, 0, 255, widths);
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nscoord* tp = mCharWidths;
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int* fp = widths;
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int* end = fp + 256;
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while (fp < end) {
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*tp++ = nscoord( *fp++ * dev2app);
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}
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::ReleaseDC(win, dc);
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetWidth(char ch, nscoord &aWidth)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetWidth(char ch, nscoord& aWidth)
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{
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aWidth = mCharWidths[PRUint8(ch)];
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return NS_OK;
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char buf[1];
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buf[0] = ch;
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return GetWidth(buf, 1, aWidth);
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetWidth(PRUnichar ch, nscoord &aWidth)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetWidth(PRUnichar ch, nscoord &aWidth)
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{
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if (ch < 256) {
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aWidth = mCharWidths[ch];
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return NS_OK;
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}
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aWidth = 0;/* XXX */
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return NS_ERROR_NOT_IMPLEMENTED;
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PRUnichar buf[1];
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buf[0] = ch;
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return GetWidth(buf, 1, aWidth);
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetWidth(const nsString& aString, nscoord &aWidth)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetWidth(const char* aString, nscoord& aWidth)
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{
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return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
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return GetWidth(aString, strlen(aString), aWidth);
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetWidth(const char *aString, nscoord &aWidth)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetWidth(const char* aString,
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PRUint32 aLength,
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nscoord& aWidth)
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{
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// XXX use native text measurement routine
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aWidth = 0;
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PRUint8 ch;
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while ((ch = PRUint8(*aString++)) != 0) {
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aWidth += mCharWidths[ch];
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if (nsnull == mDeviceContext) {
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aWidth = 0;
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return NS_ERROR_NULL_POINTER;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetWidth(nsIDeviceContext *aContext,
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const nsString& aString,
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nscoord &aWidth)
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{
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char * str = aString.ToNewCString();
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//if (str) {
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// nscoord width = GetWidth(str);
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// delete[] str;
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// return width;
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//}
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// Find font metrics and character widths
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nsNativeWidget widget;
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aContext->GetNativeWidget(widget);
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nsNativeWidget widget;
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mDeviceContext->GetNativeWidget(widget);
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HWND win = (HWND)widget;
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HDC hdc = ::GetDC(win);
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HFONT oldfont = (HFONT)::SelectObject(hdc, (HGDIOBJ) mFontHandle);
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SIZE size;
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BOOL status = GetTextExtentPoint32(hdc, str, strlen(str), &size);
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BOOL status = GetTextExtentPoint32(hdc, aString, aLength, &size);
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::ReleaseDC(win, hdc);
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float app2dev, dev2twip;
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mDeviceContext->GetAppUnitsToDevUnits(app2dev);
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mDeviceContext->GetDevUnitsToTwips(dev2twip);
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float app2dev;
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aContext->GetAppUnitsToDevUnits(app2dev);
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float dev2twip;
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aContext->GetDevUnitsToTwips(dev2twip);
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float app2twip = dev2twip * app2dev;
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//printf("[%s] %d %d = %d\n", str, size.cx, nscoord(((float)size.cx)*aContext->GetDevUnitsToTwips()), GetWidth(str));
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delete[] str;
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aWidth = nscoord(float(size.cx) * dev2twip);
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetWidth(const PRUnichar *aString,
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PRUint32 aLength,
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nscoord &aWidth)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetWidth(const nsString& aString, nscoord& aWidth)
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{
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return GetWidth(aString.GetUnicode(), aString.Length(), aWidth);
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}
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// XXX use native text measurement routine
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aWidth = 0;
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while (aLength != 0) {
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PRUnichar ch = *aString++;
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if (ch < 256) {
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aWidth += mCharWidths[ch];
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} else {
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// XXX not yet
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}
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--aLength;
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NS_IMETHODIMP
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nsFontMetricsWin :: GetWidth(const PRUnichar *aString,
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PRUint32 aLength,
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nscoord &aWidth)
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{
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if (nsnull == mDeviceContext) {
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aWidth = 0;
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return NS_ERROR_NULL_POINTER;
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}
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nsNativeWidget widget;
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mDeviceContext->GetNativeWidget(widget);
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HWND win = (HWND)widget;
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HDC hdc = ::GetDC(win);
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HFONT oldfont = (HFONT)::SelectObject(hdc, (HGDIOBJ) mFontHandle);
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SIZE size;
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BOOL status = GetTextExtentPoint32W(hdc, aString, aLength, &size);
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::ReleaseDC(win, hdc);
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float app2dev, dev2twip;
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mDeviceContext->GetAppUnitsToDevUnits(app2dev);
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mDeviceContext->GetDevUnitsToTwips(dev2twip);
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float app2twip = dev2twip * app2dev;
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aWidth = nscoord(float(size.cx) * dev2twip);
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetHeight(nscoord &aHeight)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetHeight(nscoord &aHeight)
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{
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aHeight = mHeight;
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetLeading(nscoord &aLeading)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetLeading(nscoord &aLeading)
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{
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aLeading = mLeading;
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetMaxAscent(nscoord &aAscent)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetMaxAscent(nscoord &aAscent)
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{
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aAscent = mMaxAscent;
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return NS_OK;
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}
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NS_IMETHODIMP nsFontMetricsWin :: GetMaxDescent(nscoord &aDescent)
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NS_IMETHODIMP
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nsFontMetricsWin :: GetMaxDescent(nscoord &aDescent)
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{
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aDescent = mMaxDescent;
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return NS_OK;
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}
|
||||
|
||||
NS_IMETHODIMP nsFontMetricsWin :: GetMaxAdvance(nscoord &aAdvance)
|
||||
NS_IMETHODIMP
|
||||
nsFontMetricsWin :: GetMaxAdvance(nscoord &aAdvance)
|
||||
{
|
||||
aAdvance = mMaxAdvance;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsFontMetricsWin :: GetWidths(const nscoord *&aWidths)
|
||||
{
|
||||
aWidths = mCharWidths;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsFontMetricsWin :: GetFont(const nsFont *&aFont)
|
||||
NS_IMETHODIMP
|
||||
nsFontMetricsWin :: GetFont(const nsFont *&aFont)
|
||||
{
|
||||
aFont = mFont;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsFontMetricsWin::GetFontHandle(nsFontHandle &aHandle)
|
||||
NS_IMETHODIMP
|
||||
nsFontMetricsWin::GetFontHandle(nsFontHandle &aHandle)
|
||||
{
|
||||
aHandle = mFontHandle;
|
||||
return NS_OK;
|
||||
|
|
|
|||
|
|
@ -42,28 +42,31 @@ public:
|
|||
|
||||
NS_DECL_ISUPPORTS
|
||||
|
||||
NS_IMETHOD Init(const nsFont& aFont, nsIDeviceContext *aContext);
|
||||
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 PRUnichar *aString, PRUint32 aLength, nscoord &aWidth);
|
||||
NS_IMETHOD GetWidth(nsIDeviceContext *aContext, const nsString& aString, nscoord &aWidth);
|
||||
NS_IMETHOD Init(const nsFont& aFont, nsIDeviceContext* aContext);
|
||||
NS_IMETHOD Destroy();
|
||||
|
||||
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);
|
||||
NS_IMETHOD GetMaxAscent(nscoord &aAscent);
|
||||
NS_IMETHOD GetMaxDescent(nscoord &aDescent);
|
||||
NS_IMETHOD GetMaxAdvance(nscoord &aAdvance);
|
||||
NS_IMETHOD GetWidths(const nscoord *&aWidths);
|
||||
NS_IMETHOD GetFont(const nsFont *&aFont);
|
||||
NS_IMETHOD GetFontHandle(nsFontHandle &aHandle);
|
||||
|
||||
protected:
|
||||
void RealizeFont(nsIDeviceContext *aContext);
|
||||
void RealizeFont();
|
||||
|
||||
nsIDeviceContext* mDeviceContext;
|
||||
|
||||
nsFont *mFont;
|
||||
nscoord mCharWidths[256];
|
||||
nscoord mHeight;
|
||||
nscoord mAscent;
|
||||
nscoord mDescent;
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче