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Better protection against _ct being NULL.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@24505 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
fredkiefer 2007-02-12 16:21:39 +00:00
parent 3699e2104d
commit 4a9c2c23ba
2 changed files with 62 additions and 36 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2007-02-11 Fred Kiefer <FredKiefer@gmx.de>
* Source/cairo/CairoGState.m (-DPScharpath::, -DPSshow:,
-GSSetFont:, -GSSetFontSize:, -GSShowText::, -GSShowGlyphs::):
Protect all font operation from _ct being NULL.
* Source/cairo/CairoGState.m (-compositeGState:...fraction:):
Small improvement for scrolling.
2007-02-11 Fred Kiefer <FredKiefer@gmx.de>
* Source/cairo/CairoGState.m (-GSReadRect:): Implemented this method.

90
Source/cairo/CairoGState.m
View file

@ -191,17 +191,23 @@
- (void) DPScharpath: (const char *)s : (int)b
{
char *c = malloc(b + 1);
if (_ct)
{
char *c = malloc(b + 1);
memcpy(c, s, b);
c[b] = 0;
cairo_text_path(_ct, c);
free(c);
memcpy(c, s, b);
c[b] = 0;
cairo_text_path(_ct, c);
free(c);
}
}
- (void) DPSshow: (const char *)s
{
cairo_show_text(_ct, s);
if (_ct)
{
cairo_show_text(_ct, s);
}
}
- (void) GSSetFont: (GSFontInfo *)fontref
@ -211,33 +217,45 @@
[super GSSetFont: fontref];
matrix = [font matrix];
cairo_set_font_face(_ct, [((CairoFontInfo *)font)->_faceInfo fontFace]);
cairo_matrix_init(&font_matrix, matrix[0], matrix[1], matrix[2],
-matrix[3], matrix[4], matrix[5]);
cairo_set_font_matrix(_ct, &font_matrix);
if (_ct)
{
matrix = [font matrix];
cairo_set_font_face(_ct, [((CairoFontInfo *)font)->_faceInfo fontFace]);
cairo_matrix_init(&font_matrix, matrix[0], matrix[1], matrix[2],
-matrix[3], matrix[4], matrix[5]);
cairo_set_font_matrix(_ct, &font_matrix);
}
}
- (void) GSSetFontSize: (float)size
{
cairo_set_font_size(_ct, size);
if (_ct)
{
cairo_set_font_size(_ct, size);
}
}
- (void) GSShowText: (const char *)string : (size_t)length
{
char *c = malloc(length + 1);
if (_ct)
{
char *c = malloc(length + 1);
memcpy(c, string, length);
c[length] = 0;
cairo_show_text(_ct, c);
free(c);
memcpy(c, string, length);
c[length] = 0;
cairo_show_text(_ct, c);
free(c);
}
}
- (void) GSShowGlyphs: (const NSGlyph *)glyphs : (size_t)length
{
[(CairoFontInfo *)font drawGlyphs: glyphs
length: length
on: _ct];
if (_ct)
{
[(CairoFontInfo *)font drawGlyphs: glyphs
length: length
on: _ct];
}
}
/*
@ -769,14 +787,10 @@
x = NSWidth(r);
y = NSHeight(r);
cairo_user_to_device_distance(_ct, &x, &y);
ix = floor(x);
iy = -floor(y);
ix = abs(floor(x));
iy = abs(floor(y));
ssize = NSMakeSize(ix, iy);
/*
NSLog(@"rect %@ size %@", NSStringFromRect(r), NSStringFromSize(ssize));
*/
dict = [NSMutableDictionary dictionary];
[dict setObject: [NSValue valueWithSize: ssize] forKey: @"Size"];
[dict setObject: NSDeviceRGBColorSpace forKey: @"ColorSpace"];
@ -1089,7 +1103,8 @@ _set_op(cairo_t *ct, NSCompositingOperation op)
double width, height;
double dh;
NSSize size;
double x, y;
size = [source->_surface size];
dh = size.height;
@ -1109,18 +1124,21 @@ _set_op(cairo_t *ct, NSCompositingOperation op)
self,cairo_get_target(_ct),NSStringFromSize([_surface size]));
*/
}
x = aPoint.x;
y = aPoint.y;
minx = NSMinX(aRect);
miny = NSMinY(aRect);
width = NSWidth(aRect);
height = NSHeight(aRect);
// NSLog(@"Old values %g, %g, %g , %g", minx, miny, width, height);
cairo_user_to_device(source->_ct, &minx, &miny);
// NSLog(@"New values %g, %g, %g , %g", minx, miny, width, height);
if (viewIsFlipped)
{
if (!source->viewIsFlipped)
{
cairo_set_source_surface(_ct, src, aPoint.x - minx, aPoint.y - miny - dh);
//cairo_set_source_surface(_ct, src, aPoint.x - minx, aPoint.y - miny - height);
cairo_set_source_surface(_ct, src, x - minx, y + miny);
}
else
{
@ -1130,12 +1148,13 @@ _set_op(cairo_t *ct, NSCompositingOperation op)
cpattern = cairo_pattern_create_for_surface(src);
cairo_matrix_init_scale(&local_matrix, 1, -1);
cairo_matrix_translate(&local_matrix, -aPoint.x + minx, -aPoint.y + miny);
cairo_matrix_translate(&local_matrix, -x + minx, -y - miny);
// NSLog(@"y %g, miny %g, dh %g, height %g = res %g", y, miny, dh, height, -y - miny);
cairo_pattern_set_matrix(cpattern, &local_matrix);
cairo_set_source(_ct, cpattern);
cairo_pattern_destroy(cpattern);
}
cairo_rectangle(_ct, aPoint.x, aPoint.y - height, width, height);
cairo_rectangle(_ct, x, y - height, width, height);
}
else
{
@ -1147,17 +1166,16 @@ _set_op(cairo_t *ct, NSCompositingOperation op)
cpattern = cairo_pattern_create_for_surface(src);
cairo_matrix_init_scale(&local_matrix, 1, -1);
cairo_matrix_translate(&local_matrix, -aPoint.x + minx, -aPoint.y + miny - dh);
//cairo_matrix_translate(&local_matrix, -aPoint.x + minx, -aPoint.y + miny - height);
cairo_matrix_translate(&local_matrix, -x + minx, -y - miny);
cairo_pattern_set_matrix(cpattern, &local_matrix);
cairo_set_source(_ct, cpattern);
cairo_pattern_destroy(cpattern);
}
else
{
cairo_set_source_surface(_ct, src, aPoint.x - minx, aPoint.y - miny);
cairo_set_source_surface(_ct, src, x - minx, y + miny);
}
cairo_rectangle(_ct, aPoint.x, aPoint.y, width, height);
cairo_rectangle(_ct, x, y, width, height);
}
if (delta < 1.0)