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Fix for bug 2211, and other font rendering changes and fixes. Fix davidm's changes to avoid blowing the font cache, change the static function to return font information, rather than set it.

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sfraser%netscape.com 1999-01-14 05:47:20 +00:00
parent 9a281cb29a
commit 96503f181b
2 changed files with 61 additions and 34 deletions
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84
gfx/src/mac/nsFontMetricsMac.cpp
View File

@ -16,6 +16,8 @@
* Reserved.
*/
#include <Fonts.h> // for FetchFontInfo
#include "nsFontMetricsMac.h"
#include "nsDeviceContextMac.h"
@ -42,7 +44,7 @@ nsFontMetricsMac :: ~nsFontMetricsMac()
//------------------------------------------------------------------------
NS_IMPL_ISUPPORTS(nsFontMetricsMac, kIFontMetricsIID)
NS_IMPL_ISUPPORTS(nsFontMetricsMac, kIFontMetricsIID);
NS_IMETHODIMP nsFontMetricsMac :: Init(const nsFont& aFont, nsIDeviceContext* aCX)
{
@ -51,15 +53,18 @@ NS_IMETHODIMP nsFontMetricsMac :: Init(const nsFont& aFont, nsIDeviceContext* aC
mFont = new nsFont(aFont);
mContext = aCX;
RealizeFont();
if (mFont != nsnull)
nsFontMetricsMac::SetFont(*mFont, mContext);
TextStyle theStyle;
nsFontMetricsMac::GetNativeTextStyle(*this, *mContext, theStyle);
FontInfo fInfo;
// FetchFontInfo gets the font info without having to touch a grafport. It's 8.5 only
OSErr err = ::FetchFontInfo(mFontNum, theStyle.tsSize, theStyle.tsFace, &fInfo);
NS_ASSERTION(err == noErr, "Error in FetchFontInfo");
float dev2app;
mContext->GetDevUnitsToAppUnits(dev2app);
FontInfo fInfo;
::GetFontInfo(&fInfo);
mAscent = NSToCoordRound(float(fInfo.ascent) * dev2app);
mDescent = NSToCoordRound(float(fInfo.descent) * dev2app);
mLeading = NSToCoordRound(float(fInfo.leading) * dev2app);
@ -113,7 +118,7 @@ static PRBool FontEnumCallback(const nsString& aFamily, PRBool aGeneric, void *a
{
nsAutoString realFace;
MapGenericFamilyToFont(aFamily, realFace);
data->mFaceName=realFace;
data->mFaceName = realFace;
return PR_FALSE; // stop
}
else
@ -123,8 +128,8 @@ static PRBool FontEnumCallback(const nsString& aFamily, PRBool aGeneric, void *a
data->mContext->GetLocalFontName(aFamily, realFace, aliased);
if (aliased || (NS_OK == data->mContext->CheckFontExistence(realFace)))
{
data->mFaceName=realFace;
return PR_FALSE; // stop
data->mFaceName = realFace;
return PR_FALSE; // stop
}
}
return PR_TRUE;
@ -132,9 +137,11 @@ static PRBool FontEnumCallback(const nsString& aFamily, PRBool aGeneric, void *a
void nsFontMetricsMac::RealizeFont()
{
nsString faceName;
FontEnumData data(mContext, mFont->name);
mFont->EnumerateFamilies(FontEnumCallback, &data);
nsAutoString fontName;
FontEnumData fontData(mContext, fontName);
mFont->EnumerateFamilies(FontEnumCallback, &fontData);
nsDeviceContextMac::GetMacFontNumber(fontName, mFontNum);
}
@ -236,42 +243,57 @@ NS_IMETHODIMP nsFontMetricsMac :: GetWidths(const nscoord *&aWidths)
NS_IMETHODIMP nsFontMetricsMac :: GetFontHandle(nsFontHandle &aHandle)
{
// NOTE: the name in the mFont may be a comma-separated list of
// font names, like "Verdana, Arial, sans-serif"
// If you want to do the conversion again to a Mac font, you'll
// have to EnumerateFamilies() to resolve it to an installed
// font again.
NS_PRECONDITION(mFontNum != BAD_FONT_NUM, "Font metrics have not been initialized");
// We have no 'font handles' on Mac like they have on Windows
// so let's use it for the fontNum.
if (mFontNum == BAD_FONT_NUM)
nsDeviceContextMac::GetMacFontNumber(mFont->name, mFontNum);
aHandle = (nsFontHandle)mFontNum;
return NS_OK;
}
//------------------------------------------------------------------------
NS_GFX void nsFontMetricsMac :: SetFont(const nsFont& aFont, nsIDeviceContext* aContext)
// A utility routine to the the text style in a convenient manner.
// This is static, which is unfortunate, because it introduces link
// dependencies between libraries that should not exist.
NS_EXPORT void nsFontMetricsMac::GetNativeTextStyle(const nsIFontMetrics& inMetrics,
const nsIDeviceContext& inDevContext, TextStyle &outStyle)
{
short fontNum;
//¥TODO?: This is not very efficient. Look in nsDeviceContextMac::GetMacFontNumber()
nsDeviceContextMac::GetMacFontNumber(aFont.name, fontNum);
::TextFont(fontNum);
nsFont *aFont;
inMetrics.GetFont(aFont);
nsFontHandle fontNum;
inMetrics.GetFontHandle(fontNum);
float dev2app;
aContext->GetDevUnitsToAppUnits(dev2app);
::TextSize(short(float(aFont.size) / dev2app));
inDevContext.GetDevUnitsToAppUnits(dev2app);
short textSize = float(aFont->size) / dev2app;
Style textFace = normal;
switch (aFont.style)
switch (aFont->style)
{
case NS_FONT_STYLE_NORMAL: break;
case NS_FONT_STYLE_ITALIC: textFace |= italic; break;
case NS_FONT_STYLE_OBLIQUE: textFace |= italic; break; //XXX
}
switch (aFont.variant)
switch (aFont->variant)
{
case NS_FONT_VARIANT_NORMAL: break;
case NS_FONT_VARIANT_SMALL_CAPS: textFace |= condense; break; //XXX
case NS_FONT_VARIANT_SMALL_CAPS: textFace |= condense; break; //XXX why?
}
if (aFont.weight > NS_FONT_WEIGHT_NORMAL) // don't test NS_FONT_WEIGHT_BOLD
if (aFont->weight > NS_FONT_WEIGHT_NORMAL) // don't test NS_FONT_WEIGHT_BOLD
textFace |= bold;
::TextFace(textFace);
RGBColor black = {0};
outStyle.tsFont = (short)fontNum;
outStyle.tsFace = textFace;
outStyle.tsSize = textSize;
outStyle.tsColor = black;
}

11
gfx/src/mac/nsFontMetricsMac.h
View File

@ -19,6 +19,8 @@
#ifndef nsFontMetricsMac_h__
#define nsFontMetricsMac_h__
#include <TextEdit.h> // for TextStyle
#include "nsIFontMetrics.h"
#include "nsFont.h"
#include "nsString.h"
@ -57,10 +59,13 @@ public:
NS_IMETHOD GetFont(const nsFont *&aFont);
NS_IMETHOD GetFontHandle(nsFontHandle& aHandle);
static void SetFont(const nsFont& aFont, nsIDeviceContext* aContext);
protected:
void RealizeFont();
// fill a native TextStyle record with the font, size and style (not color)
static void GetNativeTextStyle( const nsIFontMetrics& inMetrics,
const nsIDeviceContext& inDevContext, TextStyle &outStyle);
protected:
void RealizeFont();
short mFontNum;
nscoord mHeight;
nscoord mAscent;