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css: Turn number values into a virtual type

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GtkCssNumberValue is now a base class for numbers.

Actual numbers are now implemented in GtkCssDimensionValue. The name is
borrowed from the CSS spec, so there.
This commit is contained in:
Benjamin Otte 2016-02-12 06:25:50 +01:00
parent e2d966eda5
commit b246d55472
6 changed files with 371 additions and 258 deletions
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2
gtk/Makefile.am
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@ -391,6 +391,7 @@ gtk_private_h_sources = \
gtkcsscornervalueprivate.h \
gtkcsscustomgadgetprivate.h \
gtkcsscustompropertyprivate.h \
gtkcssdimensionvalueprivate.h \
gtkcsseasevalueprivate.h \
gtkcssenginevalueprivate.h \
gtkcssenumvalueprivate.h \
@ -655,6 +656,7 @@ gtk_base_c_sources = \
gtkcsscornervalue.c \
gtkcsscustomgadget.c \
gtkcsscustomproperty.c \
gtkcssdimensionvalue.c \
gtkcsseasevalue.c \
gtkcssenumvalue.c \
gtkcssenginevalue.c \

293
gtk/gtkcssdimensionvalue.c Normal file
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@ -0,0 +1,293 @@
/* GTK - The GIMP Toolkit
* Copyright (C) 2011 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkcssdimensionvalueprivate.h"
#include "gtkcssenumvalueprivate.h"
#include "gtkstylepropertyprivate.h"
#include "fallback-c89.c"
struct _GtkCssValue {
GTK_CSS_VALUE_BASE
GtkCssUnit unit;
double value;
};
static void
gtk_css_value_dimension_free (GtkCssValue *value)
{
g_slice_free (GtkCssValue, value);
}
static double
get_base_font_size (guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
if (property_id == GTK_CSS_PROPERTY_FONT_SIZE)
{
if (parent_style)
return _gtk_css_number_value_get (gtk_css_style_get_value (parent_style, GTK_CSS_PROPERTY_FONT_SIZE), 100);
else
return _gtk_css_font_size_get_default (provider);
}
return _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_FONT_SIZE), 100);
}
static double
get_dpi (GtkCssStyle *style)
{
return _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_DPI), 96);
}
static GtkCssValue *
gtk_css_value_dimension_compute (GtkCssValue *number,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkBorderStyle border_style;
/* special case according to http://dev.w3.org/csswg/css-backgrounds/#the-border-width */
switch (property_id)
{
case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
default:
break;
}
switch (number->unit)
{
default:
g_assert_not_reached();
/* fall through */
case GTK_CSS_PERCENT:
/* percentages for font sizes are computed, other percentages aren't */
if (property_id == GTK_CSS_PROPERTY_FONT_SIZE)
return gtk_css_dimension_value_new (number->value / 100.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_NUMBER:
case GTK_CSS_PX:
case GTK_CSS_DEG:
case GTK_CSS_S:
return _gtk_css_value_ref (number);
case GTK_CSS_PT:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0,
GTK_CSS_PX);
case GTK_CSS_PC:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0 * 12.0,
GTK_CSS_PX);
case GTK_CSS_IN:
return gtk_css_dimension_value_new (number->value * get_dpi (style),
GTK_CSS_PX);
case GTK_CSS_CM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) * 0.39370078740157477,
GTK_CSS_PX);
case GTK_CSS_MM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) * 0.039370078740157477,
GTK_CSS_PX);
case GTK_CSS_EM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_EX:
/* for now we pretend ex is half of em */
return gtk_css_dimension_value_new (number->value * 0.5 * get_dpi (style) / 72.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_REM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0 *
_gtk_css_font_size_get_default (provider),
GTK_CSS_PX);
case GTK_CSS_RAD:
return gtk_css_dimension_value_new (number->value * 360.0 / (2 * G_PI),
GTK_CSS_DEG);
case GTK_CSS_GRAD:
return gtk_css_dimension_value_new (number->value * 360.0 / 400.0,
GTK_CSS_DEG);
case GTK_CSS_TURN:
return gtk_css_dimension_value_new (number->value * 360.0,
GTK_CSS_DEG);
case GTK_CSS_MS:
return gtk_css_dimension_value_new (number->value / 1000.0,
GTK_CSS_S);
}
}
static gboolean
gtk_css_value_dimension_equal (const GtkCssValue *number1,
const GtkCssValue *number2)
{
return number1->unit == number2->unit &&
number1->value == number2->value;
}
static GtkCssValue *
gtk_css_value_dimension_transition (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
/* FIXME: This needs to be supported at least for percentages,
* but for that we kinda need to support calc(5px + 50%) */
if (start->unit != end->unit)
return NULL;
return gtk_css_dimension_value_new (start->value + (end->value - start->value) * progress,
start->unit);
}
static void
gtk_css_value_dimension_print (const GtkCssValue *number,
GString *string)
{
char buf[G_ASCII_DTOSTR_BUF_SIZE];
const char *names[] = {
/* [GTK_CSS_NUMBER] = */ "",
/* [GTK_CSS_PERCENT] = */ "%",
/* [GTK_CSS_PX] = */ "px",
/* [GTK_CSS_PT] = */ "pt",
/* [GTK_CSS_EM] = */ "em",
/* [GTK_CSS_EX] = */ "ex",
/* [GTK_CSS_REM] = */ "rem",
/* [GTK_CSS_PC] = */ "pc",
/* [GTK_CSS_IN] = */ "in",
/* [GTK_CSS_CM] = */ "cm",
/* [GTK_CSS_MM] = */ "mm",
/* [GTK_CSS_RAD] = */ "rad",
/* [GTK_CSS_DEG] = */ "deg",
/* [GTK_CSS_GRAD] = */ "grad",
/* [GTK_CSS_TURN] = */ "turn",
/* [GTK_CSS_S] = */ "s",
/* [GTK_CSS_MS] = */ "ms",
};
if (isinf (number->value))
g_string_append (string, "infinite");
else
{
g_ascii_dtostr (buf, sizeof (buf), number->value);
g_string_append (string, buf);
if (number->value != 0.0)
g_string_append (string, names[number->unit]);
}
}
static double
gtk_css_value_dimension_get (const GtkCssValue *value,
double one_hundred_percent)
{
if (value->unit == GTK_CSS_PERCENT)
return value->value * one_hundred_percent / 100;
else
return value->value;
}
static GtkCssDimension
gtk_css_value_dimension_get_dimension (const GtkCssValue *value)
{
return gtk_css_unit_get_dimension (value->unit);
}
static gboolean
gtk_css_value_dimension_has_percent (const GtkCssValue *value)
{
return gtk_css_unit_get_dimension (value->unit) == GTK_CSS_DIMENSION_PERCENTAGE;
}
static const GtkCssNumberValueClass GTK_CSS_VALUE_DIMENSION = {
{
gtk_css_value_dimension_free,
gtk_css_value_dimension_compute,
gtk_css_value_dimension_equal,
gtk_css_value_dimension_transition,
gtk_css_value_dimension_print
},
gtk_css_value_dimension_get,
gtk_css_value_dimension_get_dimension,
gtk_css_value_dimension_has_percent
};
GtkCssValue *
gtk_css_dimension_value_new (double value,
GtkCssUnit unit)
{
static GtkCssValue number_singletons[] = {
{ &GTK_CSS_VALUE_DIMENSION.value_class, 1, GTK_CSS_NUMBER, 0 },
{ &GTK_CSS_VALUE_DIMENSION.value_class, 1, GTK_CSS_NUMBER, 1 },
};
static GtkCssValue px_singletons[] = {
{ &GTK_CSS_VALUE_DIMENSION.value_class, 1, GTK_CSS_PX, 0 },
{ &GTK_CSS_VALUE_DIMENSION.value_class, 1, GTK_CSS_PX, 1 },
{ &GTK_CSS_VALUE_DIMENSION.value_class, 1, GTK_CSS_PX, 2 },
{ &GTK_CSS_VALUE_DIMENSION.value_class, 1, GTK_CSS_PX, 3 },
{ &GTK_CSS_VALUE_DIMENSION.value_class, 1, GTK_CSS_PX, 4 },
};
GtkCssValue *result;
if (unit == GTK_CSS_NUMBER && (value == 0 || value == 1))
return _gtk_css_value_ref (&number_singletons[(int) value]);
if (unit == GTK_CSS_PX &&
(value == 0 ||
value == 1 ||
value == 2 ||
value == 3 ||
value == 4))
{
return _gtk_css_value_ref (&px_singletons[(int) value]);
}
result = _gtk_css_value_new (GtkCssValue, &GTK_CSS_VALUE_DIMENSION.value_class);
result->unit = unit;
result->value = value;
return result;
}

35
gtk/gtkcssdimensionvalueprivate.h Normal file
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@ -0,0 +1,35 @@
/*
* Copyright © 2012 Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Alexander Larsson <alexl@gnome.org>
*/
#ifndef __GTK_CSS_DIMENSION_VALUE_PRIVATE_H__
#define __GTK_CSS_DIMENSION_VALUE_PRIVATE_H__
#include "gtkcssnumbervalueprivate.h"
G_BEGIN_DECLS
GtkCssValue * gtk_css_dimension_value_new (double value,
GtkCssUnit unit);
/* This function implemented in gtkcssparser.c */
GtkCssValue * gtk_css_dimension_value_parse (GtkCssParser *parser,
GtkCssNumberParseFlags flags);
G_END_DECLS
#endif /* __GTK_CSS_DIMENSION_VALUE_PRIVATE_H__ */

278
gtk/gtkcssnumbervalue.c
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@ -1,5 +1,5 @@
/* GTK - The GIMP Toolkit
* Copyright (C) 2011 Red Hat, Inc.
* Copyright (C) 2016 Benjamin Otte <otte@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -19,278 +19,52 @@
#include "gtkcssnumbervalueprivate.h"
#include "gtkcssenumvalueprivate.h"
#include "gtkcssinitialvalueprivate.h"
#include "gtkstylepropertyprivate.h"
#include "fallback-c89.c"
#include "gtkcssdimensionvalueprivate.h"
struct _GtkCssValue {
GTK_CSS_VALUE_BASE
GtkCssUnit unit;
double value;
};
static void
gtk_css_value_number_free (GtkCssValue *value)
{
g_slice_free (GtkCssValue, value);
}
static double
get_base_font_size (guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
if (property_id == GTK_CSS_PROPERTY_FONT_SIZE)
{
if (parent_style)
return _gtk_css_number_value_get (gtk_css_style_get_value (parent_style, GTK_CSS_PROPERTY_FONT_SIZE), 100);
else
return _gtk_css_font_size_get_default (provider);
}
return _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_FONT_SIZE), 100);
}
static double
get_dpi (GtkCssStyle *style)
{
return _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_DPI), 96);
}
static GtkCssValue *
gtk_css_value_number_compute (GtkCssValue *number,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkBorderStyle border_style;
/* special case according to http://dev.w3.org/csswg/css-backgrounds/#the-border-width */
switch (property_id)
{
case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return _gtk_css_number_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return _gtk_css_number_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return _gtk_css_number_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return _gtk_css_number_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return _gtk_css_number_value_new (0, GTK_CSS_NUMBER);
break;
default:
break;
}
switch (number->unit)
{
default:
g_assert_not_reached();
/* fall through */
case GTK_CSS_PERCENT:
/* percentages for font sizes are computed, other percentages aren't */
if (property_id == GTK_CSS_PROPERTY_FONT_SIZE)
return _gtk_css_number_value_new (number->value / 100.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_NUMBER:
case GTK_CSS_PX:
case GTK_CSS_DEG:
case GTK_CSS_S:
return _gtk_css_value_ref (number);
case GTK_CSS_PT:
return _gtk_css_number_value_new (number->value * get_dpi (style) / 72.0,
GTK_CSS_PX);
case GTK_CSS_PC:
return _gtk_css_number_value_new (number->value * get_dpi (style) / 72.0 * 12.0,
GTK_CSS_PX);
case GTK_CSS_IN:
return _gtk_css_number_value_new (number->value * get_dpi (style),
GTK_CSS_PX);
case GTK_CSS_CM:
return _gtk_css_number_value_new (number->value * get_dpi (style) * 0.39370078740157477,
GTK_CSS_PX);
case GTK_CSS_MM:
return _gtk_css_number_value_new (number->value * get_dpi (style) * 0.039370078740157477,
GTK_CSS_PX);
case GTK_CSS_EM:
return _gtk_css_number_value_new (number->value * get_dpi (style) / 72.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_EX:
/* for now we pretend ex is half of em */
return _gtk_css_number_value_new (number->value * 0.5 * get_dpi (style) / 72.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_REM:
return _gtk_css_number_value_new (number->value * get_dpi (style) / 72.0 *
_gtk_css_font_size_get_default (provider),
GTK_CSS_PX);
case GTK_CSS_RAD:
return _gtk_css_number_value_new (number->value * 360.0 / (2 * G_PI),
GTK_CSS_DEG);
case GTK_CSS_GRAD:
return _gtk_css_number_value_new (number->value * 360.0 / 400.0,
GTK_CSS_DEG);
case GTK_CSS_TURN:
return _gtk_css_number_value_new (number->value * 360.0,
GTK_CSS_DEG);
case GTK_CSS_MS:
return _gtk_css_number_value_new (number->value / 1000.0,
GTK_CSS_S);
}
}
static gboolean
gtk_css_value_number_equal (const GtkCssValue *number1,
const GtkCssValue *number2)
{
return number1->unit == number2->unit &&
number1->value == number2->value;
}
static GtkCssValue *
gtk_css_value_number_transition (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
/* FIXME: This needs to be supported at least for percentages,
* but for that we kinda need to support calc(5px + 50%) */
if (start->unit != end->unit)
return NULL;
return _gtk_css_number_value_new (start->value + (end->value - start->value) * progress,
start->unit);
}
static void
gtk_css_value_number_print (const GtkCssValue *number,
GString *string)
{
char buf[G_ASCII_DTOSTR_BUF_SIZE];
const char *names[] = {
/* [GTK_CSS_NUMBER] = */ "",
/* [GTK_CSS_PERCENT] = */ "%",
/* [GTK_CSS_PX] = */ "px",
/* [GTK_CSS_PT] = */ "pt",
/* [GTK_CSS_EM] = */ "em",
/* [GTK_CSS_EX] = */ "ex",
/* [GTK_CSS_REM] = */ "rem",
/* [GTK_CSS_PC] = */ "pc",
/* [GTK_CSS_IN] = */ "in",
/* [GTK_CSS_CM] = */ "cm",
/* [GTK_CSS_MM] = */ "mm",
/* [GTK_CSS_RAD] = */ "rad",
/* [GTK_CSS_DEG] = */ "deg",
/* [GTK_CSS_GRAD] = */ "grad",
/* [GTK_CSS_TURN] = */ "turn",
/* [GTK_CSS_S] = */ "s",
/* [GTK_CSS_MS] = */ "ms",
};
if (isinf (number->value))
g_string_append (string, "infinite");
else
{
g_ascii_dtostr (buf, sizeof (buf), number->value);
g_string_append (string, buf);
if (number->value != 0.0)
g_string_append (string, names[number->unit]);
}
}
static const GtkCssValueClass GTK_CSS_VALUE_NUMBER = {
gtk_css_value_number_free,
gtk_css_value_number_compute,
gtk_css_value_number_equal,
gtk_css_value_number_transition,
gtk_css_value_number_print
};
GtkCssValue *
_gtk_css_number_value_new (double value,
GtkCssUnit unit)
{
static GtkCssValue number_singletons[] = {
{ &GTK_CSS_VALUE_NUMBER, 1, GTK_CSS_NUMBER, 0 },
{ &GTK_CSS_VALUE_NUMBER, 1, GTK_CSS_NUMBER, 1 },
};
static GtkCssValue px_singletons[] = {
{ &GTK_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 0 },
{ &GTK_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 1 },
{ &GTK_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 2 },
{ &GTK_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 3 },
{ &GTK_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 4 },
};
GtkCssValue *result;
if (unit == GTK_CSS_NUMBER && (value == 0 || value == 1))
return _gtk_css_value_ref (&number_singletons[(int) value]);
if (unit == GTK_CSS_PX &&
(value == 0 ||
value == 1 ||
value == 2 ||
value == 3 ||
value == 4))
{
return _gtk_css_value_ref (&px_singletons[(int) value]);
}
result = _gtk_css_value_new (GtkCssValue, &GTK_CSS_VALUE_NUMBER);
result->unit = unit;
result->value = value;
return result;
}
GtkCssDimension
gtk_css_number_value_get_dimension (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_NUMBER, GTK_CSS_DIMENSION_PERCENTAGE);
GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
return gtk_css_unit_get_dimension (value->unit);
return number_value_class->get_dimension (value);
}
gboolean
gtk_css_number_value_has_percent (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_NUMBER, FALSE);
GtkCssNumberValueClass *number_value_class = (GtkCssNumberValueClass *) value->class;
return gtk_css_unit_get_dimension (value->unit) == GTK_CSS_DIMENSION_PERCENTAGE;
return number_value_class->has_percent (value);
}
GtkCssValue *
_gtk_css_number_value_new (double value,
GtkCssUnit unit)
{
return gtk_css_dimension_value_new (value, unit);
}
GtkCssValue *
_gtk_css_number_value_parse (GtkCssParser *parser,
GtkCssNumberParseFlags flags)
{
return gtk_css_dimension_value_parse (parser, flags);
}
double
_gtk_css_number_value_get (const GtkCssValue *number,
double one_hundred_percent)
{
g_return_val_if_fail (number != NULL, 0.0);
g_return_val_if_fail (number->class == &GTK_CSS_VALUE_NUMBER, 0.0);
GtkCssNumberValueClass *number_value_class;
if (number->unit == GTK_CSS_PERCENT)
return number->value * one_hundred_percent / 100;
else
return number->value;
g_return_val_if_fail (number != NULL, 0.0);
number_value_class = (GtkCssNumberValueClass *) number->class;
return number_value_class->get (number, one_hundred_percent);
}

12
gtk/gtkcssnumbervalueprivate.h
View File

@ -36,9 +36,19 @@ typedef enum /*< skip >*/ {
GTK_CSS_PARSE_TIME = (1 << 6)
} GtkCssNumberParseFlags;
typedef struct _GtkCssNumberValueClass GtkCssNumberValueClass;
struct _GtkCssNumberValueClass {
GtkCssValueClass value_class;
double (* get) (const GtkCssValue *value,
double one_hundred_percent);
GtkCssDimension (* get_dimension) (const GtkCssValue *value);
gboolean (* has_percent) (const GtkCssValue *value);
};
GtkCssValue * _gtk_css_number_value_new (double value,
GtkCssUnit unit);
/* This function implemented in gtkcssparser.c */
GtkCssValue * _gtk_css_number_value_parse (GtkCssParser *parser,
GtkCssNumberParseFlags flags);

9
gtk/gtkcssparser.c
View File

@ -19,8 +19,7 @@
#include "gtkcssparserprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkwin32themeprivate.h"
#include "gtkcssdimensionvalueprivate.h"
#include <errno.h>
#include <string.h>
@ -605,8 +604,8 @@ _gtk_css_parser_has_number (GtkCssParser *parser)
}
GtkCssValue *
_gtk_css_number_value_parse (GtkCssParser *parser,
GtkCssNumberParseFlags flags)
gtk_css_dimension_value_parse (GtkCssParser *parser,
GtkCssNumberParseFlags flags)
{
static const struct {
const char *name;
@ -721,7 +720,7 @@ _gtk_css_number_value_parse (GtkCssParser *parser,
_gtk_css_parser_skip_whitespace (parser);
return _gtk_css_number_value_new (value, unit);
return gtk_css_dimension_value_new (value, unit);
}
/* XXX: we should introduce GtkCssLenght that deals with