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cssimage: Implement (most of) current cross-fade syntax

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The CSS4 spec adapted their cross-fade syntax again. Yay!
(The previous parser was completely broken anyway...)
This commit is contained in:
Benjamin Otte 2012-09-14 02:06:14 +02:00
parent a7ec3ba53f
commit eb6ad3562e
1 changed files with 34 additions and 35 deletions
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61
gtk/gtkcssimagecrossfade.c
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@ -145,32 +145,41 @@ gtk_css_image_cross_fade_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageCrossFade *cross_fade = GTK_CSS_IMAGE_CROSS_FADE (image);
GtkCssValue *number;
if (!_gtk_css_parser_try (parser, "cross-fade(", TRUE))
{
_gtk_css_parser_error (parser, "Expected 'cross-fade('");
return FALSE;
}
if (_gtk_css_parser_has_number (parser))
{
GtkCssValue *number;
number = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_PERCENT | GTK_CSS_POSITIVE_ONLY);
if (number == NULL)
return FALSE;
cross_fade->progress = _gtk_css_number_value_get (number, 1);
_gtk_css_value_unref (number);
if (cross_fade->progress > 1.0)
{
_gtk_css_parser_error (parser, "Percentages over 100%% are not allowed");
return FALSE;
}
}
else
cross_fade->progress = 0.5;
cross_fade->start = _gtk_css_image_new_parse (parser);
if (cross_fade->start == NULL)
return FALSE;
if (!_gtk_css_parser_try (parser, ",", TRUE))
if (_gtk_css_parser_try (parser, ",", TRUE))
{
_gtk_css_parser_error (parser, "Missing comma after first image");
return FALSE;
}
/* XXX: allow parsing colors here */
cross_fade->end = _gtk_css_image_new_parse (parser);
if (cross_fade->end == NULL)
return FALSE;
if (!_gtk_css_parser_try (parser, ",", TRUE))
{
_gtk_css_parser_error (parser, "Missing comma after second image");
return FALSE;
}
if (!_gtk_css_parser_try (parser, ")", TRUE))
@ -179,19 +188,6 @@ gtk_css_image_cross_fade_parse (GtkCssImage *image,
return FALSE;
}
number = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_PERCENT | GTK_CSS_POSITIVE_ONLY);
if (number == NULL)
return FALSE;
cross_fade->progress = _gtk_css_number_value_get (number, 1);
_gtk_css_value_unref (number);
if (cross_fade->progress > 100)
{
_gtk_css_parser_error (parser, "Percentages ovre 100%% are not allowed");
return FALSE;
}
cross_fade->progress /= 100.0;
return TRUE;
}
@ -201,18 +197,21 @@ gtk_css_image_cross_fade_print (GtkCssImage *image,
{
GtkCssImageCrossFade *cross_fade = GTK_CSS_IMAGE_CROSS_FADE (image);
g_string_append (string, "cross_fade(");
g_string_append (string, "cross-fade(");
if (cross_fade->progress != 0.5)
{
g_string_append_printf (string, "%g%% ", cross_fade->progress * 100.0);
}
if (cross_fade->start)
_gtk_css_image_print (cross_fade->start, string);
else
g_string_append (string, "none");
g_string_append (string, ",");
if (cross_fade->end)
_gtk_css_image_print (cross_fade->end, string);
else
g_string_append (string, "none");
{
g_string_append (string, ", ");
g_string_append_printf (string, "%g%%", cross_fade->progress * 100.0);
_gtk_css_image_print (cross_fade->end, string);
}
g_string_append (string, ")");
}