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css: Add a token parser for transform values

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This commit is contained in:
Benjamin Otte
2016-03-18 23:19:43 +01:00
parent 945bddf120
commit fef9fe68d0
3 changed files with 319 additions and 1 deletions
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2
gtk/gtkcssstylepropertyimpl.c
View File

@@ -2166,7 +2166,7 @@ _gtk_css_style_property_init_properties (void)
GTK_STYLE_PROPERTY_ANIMATED,
GTK_CSS_AFFECTS_ICON | GTK_CSS_AFFECTS_SYMBOLIC_ICON | GTK_CSS_AFFECTS_CLIP,
transform_value_parse,
gtk_css_style_property_token_parse_default,
(GtkCssStylePropertyTokenParseFunc) gtk_css_transform_value_token_parse,
NULL,
NULL,
_gtk_css_transform_value_new_none ());

316
gtk/gtkcsstransformvalue.c
View File

@@ -1015,6 +1015,322 @@ _gtk_css_transform_value_parse (GtkCssParser *parser)
return value;
}
static gboolean
token_parse_matrix (GtkCssTokenSource *source,
guint n,
gpointer data)
{
GtkCssTransform *transform = data;
switch (n)
{
case 0:
return gtk_css_token_source_consume_number (source, &transform->matrix.matrix.xx);
case 1:
return gtk_css_token_source_consume_number (source, &transform->matrix.matrix.xy);
case 2:
return gtk_css_token_source_consume_number (source, &transform->matrix.matrix.x0);
case 3:
return gtk_css_token_source_consume_number (source, &transform->matrix.matrix.yx);
case 4:
return gtk_css_token_source_consume_number (source, &transform->matrix.matrix.yy);
case 5:
return gtk_css_token_source_consume_number (source, &transform->matrix.matrix.y0);
default:
g_assert_not_reached ();
return FALSE;
}
}
static gboolean
token_parse_translate (GtkCssTokenSource *source,
guint n,
gpointer data)
{
GtkCssTransform *transform = data;
if (n == 0)
{
transform->translate.x = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_LENGTH);
if (transform->translate.x == NULL)
return FALSE;
transform->translate.y = _gtk_css_number_value_new (0, GTK_CSS_PX);
}
else if (n == 1)
{
_gtk_css_value_unref (transform->translate.y);
transform->translate.y = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_LENGTH);
if (transform->translate.y == NULL)
return FALSE;
}
else
{
g_assert_not_reached ();
}
return TRUE;
}
static gboolean
token_parse_length (GtkCssTokenSource *source,
guint n,
gpointer data)
{
GtkCssValue **value = data;
*value = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_LENGTH);
return *value != NULL;
}
static gboolean
token_parse_scale (GtkCssTokenSource *source,
guint n,
gpointer data)
{
GtkCssTransform *transform = data;
if (n == 0)
{
transform->scale.x = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_NUMBER);
if (transform->scale.x == NULL)
return FALSE;
transform->scale.y = _gtk_css_value_ref (transform->scale.x);
}
else if (n == 1)
{
_gtk_css_value_unref (transform->scale.y);
transform->scale.y = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_NUMBER);
if (transform->scale.y == NULL)
return FALSE;
}
else
{
g_assert_not_reached ();
}
return TRUE;
}
static gboolean
token_parse_number (GtkCssTokenSource *source,
guint n,
gpointer data)
{
GtkCssValue **value = data;
*value = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_NUMBER);
return *value != NULL;
}
static gboolean
token_parse_angle (GtkCssTokenSource *source,
guint n,
gpointer data)
{
GtkCssValue **value = data;
*value = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_ANGLE);
return *value != NULL;
}
static gboolean
token_parse_skew (GtkCssTokenSource *source,
guint n,
gpointer data)
{
GtkCssTransform *transform = data;
if (n == 0)
{
transform->skew.x = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_ANGLE);
if (transform->skew.x == NULL)
return FALSE;
transform->skew.y = _gtk_css_number_value_new (0, GTK_CSS_PX);
}
else if (n == 1)
{
_gtk_css_value_unref (transform->skew.y);
transform->skew.y = gtk_css_number_value_token_parse (source, GTK_CSS_PARSE_ANGLE);
if (transform->skew.y == NULL)
return FALSE;
}
else
{
g_assert_not_reached ();
}
return TRUE;
}
GtkCssValue *
gtk_css_transform_value_token_parse (GtkCssTokenSource *source)
{
const GtkCssToken *token;
GtkCssValue *value;
GArray *array;
guint i;
token = gtk_css_token_source_get_token (source);
if (gtk_css_token_is_ident (token, "none"))
{
gtk_css_token_source_consume_token (source);
return _gtk_css_transform_value_new_none ();
}
array = g_array_new (FALSE, FALSE, sizeof (GtkCssTransform));
while (TRUE)
{
GtkCssTransform transform = { 0, };
if (gtk_css_token_is_function (token, "matrix"))
{
transform.type = GTK_CSS_TRANSFORM_MATRIX;
if (!gtk_css_token_source_consume_function (source, 6, 6, token_parse_matrix, &transform))
goto fail;
}
else if (gtk_css_token_is_function (token, "translate"))
{
transform.type = GTK_CSS_TRANSFORM_TRANSLATE;
if (!gtk_css_token_source_consume_function (source, 2, 2, token_parse_translate, &transform))
{
if (transform.translate.x)
_gtk_css_value_unref (transform.translate.x);
if (transform.translate.y)
_gtk_css_value_unref (transform.translate.y);
goto fail;
}
}
else if (gtk_css_token_is_function (token, "translateX"))
{
transform.type = GTK_CSS_TRANSFORM_TRANSLATE;
if (!gtk_css_token_source_consume_function (source, 1, 1, token_parse_length, &transform.translate.x))
{
if (transform.translate.x)
_gtk_css_value_unref (transform.translate.x);
goto fail;
}
transform.translate.y = _gtk_css_number_value_new (0, GTK_CSS_PX);
}
else if (gtk_css_token_is_function (token, "translateY"))
{
transform.type = GTK_CSS_TRANSFORM_TRANSLATE;
if (!gtk_css_token_source_consume_function (source, 1, 1, token_parse_length, &transform.translate.y))
{
if (transform.translate.y)
_gtk_css_value_unref (transform.translate.y);
goto fail;
}
transform.translate.x = _gtk_css_number_value_new (0, GTK_CSS_PX);
}
else if (gtk_css_token_is_function (token, "scale"))
{
transform.type = GTK_CSS_TRANSFORM_SCALE;
if (!gtk_css_token_source_consume_function (source, 1, 2, token_parse_scale, &transform))
{
if (transform.scale.x)
_gtk_css_value_unref (transform.scale.x);
if (transform.scale.y)
_gtk_css_value_unref (transform.scale.y);
goto fail;
}
}
else if (gtk_css_token_is_function (token, "scaleX"))
{
transform.type = GTK_CSS_TRANSFORM_SCALE;
if (!gtk_css_token_source_consume_function (source, 1, 1, token_parse_number, &transform.scale.x))
{
if (transform.scale.x)
_gtk_css_value_unref (transform.scale.x);
goto fail;
}
transform.scale.y = _gtk_css_number_value_new (1, GTK_CSS_NUMBER);
}
else if (gtk_css_token_is_function (token, "scaleY"))
{
transform.type = GTK_CSS_TRANSFORM_SCALE;
if (!gtk_css_token_source_consume_function (source, 1, 1, token_parse_number, &transform.scale.y))
{
if (transform.scale.y)
_gtk_css_value_unref (transform.scale.y);
goto fail;
}
transform.scale.x = _gtk_css_number_value_new (1, GTK_CSS_NUMBER);
}
else if (gtk_css_token_is_function (token, "rotate"))
{
transform.type = GTK_CSS_TRANSFORM_ROTATE;
if (!gtk_css_token_source_consume_function (source, 1, 1, token_parse_angle, &transform.rotate.rotate))
{
if (transform.rotate.rotate)
_gtk_css_value_unref (transform.rotate.rotate);
goto fail;
}
}
else if (gtk_css_token_is_function (token, "skew"))
{
transform.type = GTK_CSS_TRANSFORM_SKEW;
if (!gtk_css_token_source_consume_function (source, 1, 2, token_parse_skew, &transform))
{
if (transform.skew.x)
_gtk_css_value_unref (transform.skew.x);
if (transform.skew.y)
_gtk_css_value_unref (transform.skew.y);
goto fail;
}
}
else if (gtk_css_token_is_function (token, "skewX"))
{
transform.type = GTK_CSS_TRANSFORM_SKEW_X;
if (!gtk_css_token_source_consume_function (source, 1, 1, token_parse_angle, &transform.skew_x.skew))
{
if (transform.skew_x.skew)
_gtk_css_value_unref (transform.skew_x.skew);
goto fail;
}
}
else if (gtk_css_token_is_function (token, "skewY"))
{
transform.type = GTK_CSS_TRANSFORM_SKEW_Y;
if (!gtk_css_token_source_consume_function (source, 1, 1, token_parse_angle, &transform.skew_y.skew))
{
if (transform.skew_y.skew)
_gtk_css_value_unref (transform.skew_y.skew);
goto fail;
}
}
else
break;
g_array_append_val (array, transform);
token = gtk_css_token_source_get_token (source);
}
if (array->len == 0)
{
gtk_css_token_source_error (source, "Expected a transform");
gtk_css_token_source_consume_all (source);
goto fail;
}
value = gtk_css_transform_value_alloc (array->len);
memcpy (value->transforms, array->data, sizeof (GtkCssTransform) * array->len);
g_array_free (array, TRUE);
return value;
fail:
for (i = 0; i < array->len; i++)
{
gtk_css_transform_clear (&g_array_index (array, GtkCssTransform, i));
}
g_array_free (array, TRUE);
return NULL;
}
gboolean
_gtk_css_transform_value_get_matrix (const GtkCssValue *transform,
cairo_matrix_t *matrix)

2
gtk/gtkcsstransformvalueprivate.h
View File

@@ -21,12 +21,14 @@
#define __GTK_CSS_TRANSFORM_VALUE_PRIVATE_H__
#include "gtkcssparserprivate.h"
#include "gtkcsstokensourceprivate.h"
#include "gtkcssvalueprivate.h"
G_BEGIN_DECLS
GtkCssValue * _gtk_css_transform_value_new_none (void);
GtkCssValue * _gtk_css_transform_value_parse (GtkCssParser *parser);
GtkCssValue * gtk_css_transform_value_token_parse (GtkCssTokenSource *source);
gboolean _gtk_css_transform_value_get_matrix (const GtkCssValue *transform,
cairo_matrix_t *matrix);