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cssimagelinear: Use gtk_css_parser_consume_function()

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This commit is contained in:
Benjamin Otte 2019-03-31 13:39:58 +02:00
parent dbdb81f411
commit 8d69bda27a
1 changed files with 76 additions and 68 deletions
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144
gtk/gtkcssimagelinear.c
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@ -254,24 +254,43 @@ gtk_css_image_linear_snapshot (GtkCssImage *image,
}
}
static gboolean
gtk_css_image_linear_parse (GtkCssImage *image,
GtkCssParser *parser)
static guint
gtk_css_image_linear_parse_color_stop (GtkCssImageLinear *self,
GtkCssParser *parser)
{
GtkCssImageLinear *linear = GTK_CSS_IMAGE_LINEAR (image);
guint i;
GtkCssImageLinearColorStop stop;
if (_gtk_css_parser_try (parser, "repeating-linear-gradient(", TRUE))
linear->repeating = TRUE;
else if (_gtk_css_parser_try (parser, "linear-gradient(", TRUE))
linear->repeating = FALSE;
stop.color = _gtk_css_color_value_parse (parser);
if (stop.color == NULL)
return 0;
if (gtk_css_number_value_can_parse (parser))
{
stop.offset = _gtk_css_number_value_parse (parser,
GTK_CSS_PARSE_PERCENT
| GTK_CSS_PARSE_LENGTH);
if (stop.offset == NULL)
{
_gtk_css_value_unref (stop.color);
return 0;
}
}
else
{
_gtk_css_parser_error (parser, "Not a linear gradient");
return FALSE;
stop.offset = NULL;
}
g_array_append_val (self->stops, stop);
return 1;
}
static guint
gtk_css_image_linear_parse_first_arg (GtkCssImageLinear *linear,
GtkCssParser *parser)
{
guint i;
if (gtk_css_parser_try_ident (parser, "to"))
{
for (i = 0; i < 2; i++)
@ -281,7 +300,7 @@ gtk_css_image_linear_parse (GtkCssImage *image,
if (linear->side & ((1 << GTK_CSS_LEFT) | (1 << GTK_CSS_RIGHT)))
{
_gtk_css_parser_error (parser, "Expected 'top', 'bottom' or comma");
return FALSE;
return 0;
}
linear->side |= (1 << GTK_CSS_LEFT);
}
@ -290,7 +309,7 @@ gtk_css_image_linear_parse (GtkCssImage *image,
if (linear->side & ((1 << GTK_CSS_LEFT) | (1 << GTK_CSS_RIGHT)))
{
_gtk_css_parser_error (parser, "Expected 'top', 'bottom' or comma");
return FALSE;
return 0;
}
linear->side |= (1 << GTK_CSS_RIGHT);
}
@ -299,7 +318,7 @@ gtk_css_image_linear_parse (GtkCssImage *image,
if (linear->side & ((1 << GTK_CSS_TOP) | (1 << GTK_CSS_BOTTOM)))
{
_gtk_css_parser_error (parser, "Expected 'left', 'right' or comma");
return FALSE;
return 0;
}
linear->side |= (1 << GTK_CSS_TOP);
}
@ -308,7 +327,7 @@ gtk_css_image_linear_parse (GtkCssImage *image,
if (linear->side & ((1 << GTK_CSS_TOP) | (1 << GTK_CSS_BOTTOM)))
{
_gtk_css_parser_error (parser, "Expected 'left', 'right' or comma");
return FALSE;
return 0;
}
linear->side |= (1 << GTK_CSS_BOTTOM);
}
@ -319,71 +338,60 @@ gtk_css_image_linear_parse (GtkCssImage *image,
if (linear->side == 0)
{
_gtk_css_parser_error (parser, "Expected side that gradient should go to");
return FALSE;
return 0;
}
if (!gtk_css_parser_try_token (parser, GTK_CSS_TOKEN_COMMA))
{
_gtk_css_parser_error (parser, "Expected a comma");
return FALSE;
}
return 1;
}
else if (gtk_css_number_value_can_parse (parser))
{
linear->angle = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_ANGLE);
if (linear->angle == NULL)
return FALSE;
if (!gtk_css_parser_try_token (parser, GTK_CSS_TOKEN_COMMA))
{
_gtk_css_parser_error (parser, "Expected a comma");
return FALSE;
}
return 0;
return 1;
}
else
linear->side = 1 << GTK_CSS_BOTTOM;
do {
GtkCssImageLinearColorStop stop;
stop.color = _gtk_css_color_value_parse (parser);
if (stop.color == NULL)
return FALSE;
if (gtk_css_number_value_can_parse (parser))
{
stop.offset = _gtk_css_number_value_parse (parser,
GTK_CSS_PARSE_PERCENT
| GTK_CSS_PARSE_LENGTH);
if (stop.offset == NULL)
{
_gtk_css_value_unref (stop.color);
return FALSE;
}
}
else
{
stop.offset = NULL;
}
g_array_append_val (linear->stops, stop);
} while (gtk_css_parser_try_token (parser, GTK_CSS_TOKEN_COMMA));
if (linear->stops->len < 2)
{
_gtk_css_parser_error (parser, "%s() needs at least 2 color stops.",
linear->repeating ? "repeating-linear-gradient" : "linear-gradient");
linear->side = 1 << GTK_CSS_BOTTOM;
if (!gtk_css_image_linear_parse_color_stop (linear, parser))
return 0;
return 2;
}
}
static guint
gtk_css_image_linear_parse_arg (GtkCssParser *parser,
guint arg,
gpointer data)
{
GtkCssImageLinear *self = data;
if (arg == 0)
return gtk_css_image_linear_parse_first_arg (self, parser);
else
return gtk_css_image_linear_parse_color_stop (self, parser);
}
static gboolean
gtk_css_image_linear_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageLinear *self = GTK_CSS_IMAGE_LINEAR (image);
if (gtk_css_parser_has_function (parser, "repeating-linear-gradient"))
self->repeating = TRUE;
else if (gtk_css_parser_has_function (parser, "linear-gradient"))
self->repeating = FALSE;
else
{
_gtk_css_parser_error (parser, "Not a linear gradient");
return FALSE;
}
if (!_gtk_css_parser_try (parser, ")", TRUE))
{
_gtk_css_parser_error (parser, "Missing closing bracket at end of linear gradient");
return FALSE;
}
return TRUE;
return gtk_css_parser_consume_function (parser, 3, G_MAXUINT, gtk_css_image_linear_parse_arg, self);
}
static void