Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-11-30 00:01:50 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

fix bug 50816. add if statement for prevFont so it won't crash on win95J while prevFont is null (when we try to render a

Browse Source 
Unicode which do not have glyph in any font on the system.
r=buster,erik a=buster.
This commit is contained in:
ftang%netscape.com 2000-09-20 23:13:12 +00:00
parent cecb8d2d14
commit 90c1083f5c
1 changed files with 25 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
gfx/src/windows/nsRenderingContextWin.cpp
View File

@ -2209,7 +2209,10 @@ nsRenderingContextWin::GetWidth(const PRUnichar *aString,
fontMetricsWin->GetSpaceWidth(twWidth);
} else {
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
if(prevFont)
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
else
pxWidth = 0;
twWidth = NSToCoordRound(float(pxWidth) * mP2T);
}
@ -2263,7 +2266,7 @@ nsRenderingContextWin::GetWidth(const PRUnichar *aString,
breakIndex = 0;
if (aBreaks[breakIndex] < i)
{
while (aBreaks[breakIndex + 1] < i) {
while (((breakIndex + 1) < aNumBreaks) && (aBreaks[breakIndex + 1] < i)) {
breakIndex++;
}
}
@ -2287,7 +2290,10 @@ nsRenderingContextWin::GetWidth(const PRUnichar *aString,
fontMetricsWin->GetSpaceWidth(twWidth);
} else {
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
if(prevFont)
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
else
pxWidth =0;
twWidth = NSToCoordRound(float(pxWidth) * mP2T);
}
@ -3451,7 +3457,8 @@ nsRenderingContextWinA::GetWidth(const PRUnichar *aString,
while (aBreaks[breakIndex + 1] <= estimatedBreakOffset) {
breakIndex++;
}
NS_ASSERTION(aBreaks[breakIndex] <= estimatedBreakOffset, "bad break index");
if (breakIndex == -1)
breakIndex = 0;
// We found a place to break that is before the estimated break
// offset. Where we break depends on whether the text crosses a
@ -3488,7 +3495,10 @@ nsRenderingContextWinA::GetWidth(const PRUnichar *aString,
fontMetricsWin->GetSpaceWidth(twWidth);
} else {
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
if(prevFont)
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
else
pxWidth =0;
twWidth = NSToCoordRound(float(pxWidth) * mP2T);
}
@ -3540,8 +3550,12 @@ nsRenderingContextWinA::GetWidth(const PRUnichar *aString,
i = start + numChars;
if (breakIndex == -1) {
breakIndex = 0;
while (aBreaks[breakIndex + 1] < i) {
breakIndex++;
if (aBreaks[breakIndex] < i)
{
while (((breakIndex + 1) < aNumBreaks) && (aBreaks[breakIndex + 1] < i)) {
breakIndex++;
}
}
}
@ -3563,7 +3577,10 @@ nsRenderingContextWinA::GetWidth(const PRUnichar *aString,
fontMetricsWin->GetSpaceWidth(twWidth);
} else {
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
if(prevFont)
pxWidth = prevFont->GetWidth(mDC, &pstr[start], numChars);
else
pxWidth =0;
twWidth = NSToCoordRound(float(pxWidth) * mP2T);
}