gtk2/gtk/gtkcssenumvalue.c
Alexander Larsson af2c40bd54 css: Add a scale argument to css-value compute vfunc
We need to be able to compute different GtkCssImage values
depending on the scale, and we need this at compute time so that
we don't need to read any images other than the scale in used (to
e.g. calculate the image size). GtkStyleProviderPrivate is shared
for all style contexts, so its not right.
2013-07-03 14:39:25 +02:00

656 lines
18 KiB
C

/* 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 "gtkcssenumvalueprivate.h"
#include "gtkcsscomputedvaluesprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkstyleproviderprivate.h"
/* repeated API */
struct _GtkCssValue {
GTK_CSS_VALUE_BASE
int value;
const char *name;
};
static void
gtk_css_value_enum_free (GtkCssValue *value)
{
g_slice_free (GtkCssValue, value);
}
static GtkCssValue *
gtk_css_value_enum_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
return _gtk_css_value_ref (value);
}
static gboolean
gtk_css_value_enum_equal (const GtkCssValue *enum1,
const GtkCssValue *enum2)
{
return enum1 == enum2;
}
static GtkCssValue *
gtk_css_value_enum_transition (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
return NULL;
}
static void
gtk_css_value_enum_print (const GtkCssValue *value,
GString *string)
{
g_string_append (string, value->name);
}
/* GtkBorderStyle */
static const GtkCssValueClass GTK_CSS_VALUE_BORDER_STYLE = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue border_style_values[] = {
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_NONE, "none" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_SOLID, "solid" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_INSET, "inset" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_OUTSET, "outset" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_HIDDEN, "hidden" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_DOTTED, "dotted" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_DASHED, "dashed" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_DOUBLE, "double" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_GROOVE, "groove" },
{ &GTK_CSS_VALUE_BORDER_STYLE, 1, GTK_BORDER_STYLE_RIDGE, "ridge" }
};
GtkCssValue *
_gtk_css_border_style_value_new (GtkBorderStyle border_style)
{
g_return_val_if_fail (border_style < G_N_ELEMENTS (border_style_values), NULL);
return _gtk_css_value_ref (&border_style_values[border_style]);
}
GtkCssValue *
_gtk_css_border_style_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (border_style_values); i++)
{
if (_gtk_css_parser_try (parser, border_style_values[i].name, TRUE))
return _gtk_css_value_ref (&border_style_values[i]);
}
return NULL;
}
GtkBorderStyle
_gtk_css_border_style_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_BORDER_STYLE, GTK_BORDER_STYLE_NONE);
return value->value;
}
/* GtkCssFontSize */
/* XXX: Kinda bad to have that machinery here, nobody expects vital font
* size code to appear in gtkcssvalueenum.c.
*/
#define DEFAULT_FONT_SIZE 10
double
_gtk_css_font_size_get_default (GtkStyleProviderPrivate *provider)
{
GtkSettings *settings;
PangoFontDescription *description;
char *font_name;
double font_size;
settings = _gtk_style_provider_private_get_settings (provider);
if (settings == NULL)
return DEFAULT_FONT_SIZE;
g_object_get (settings, "gtk-font-name", &font_name, NULL);
description = pango_font_description_from_string (font_name);
g_free (font_name);
if (description == NULL)
return DEFAULT_FONT_SIZE;
if (pango_font_description_get_set_fields (description) & PANGO_FONT_MASK_SIZE)
font_size = (double) pango_font_description_get_size (description) / PANGO_SCALE;
else
font_size = DEFAULT_FONT_SIZE;
pango_font_description_free (description);
return font_size;
}
static GtkCssValue *
gtk_css_value_font_size_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
double font_size;
switch (value->value)
{
case GTK_CSS_FONT_SIZE_XX_SMALL:
font_size = _gtk_css_font_size_get_default (provider) * 3. / 5;
break;
case GTK_CSS_FONT_SIZE_X_SMALL:
font_size = _gtk_css_font_size_get_default (provider) * 3. / 4;
break;
case GTK_CSS_FONT_SIZE_SMALL:
font_size = _gtk_css_font_size_get_default (provider) * 8. / 9;
break;
default:
g_assert_not_reached ();
/* fall thru */
case GTK_CSS_FONT_SIZE_MEDIUM:
font_size = _gtk_css_font_size_get_default (provider);
break;
case GTK_CSS_FONT_SIZE_LARGE:
font_size = _gtk_css_font_size_get_default (provider) * 6. / 5;
break;
case GTK_CSS_FONT_SIZE_X_LARGE:
font_size = _gtk_css_font_size_get_default (provider) * 3. / 2;
break;
case GTK_CSS_FONT_SIZE_XX_LARGE:
font_size = _gtk_css_font_size_get_default (provider) * 2;
break;
case GTK_CSS_FONT_SIZE_SMALLER:
*dependencies = GTK_CSS_DEPENDS_ON_PARENT;
if (parent_values)
font_size = _gtk_css_number_value_get (_gtk_css_computed_values_get_value (parent_values, GTK_CSS_PROPERTY_FONT_SIZE), 100);
else
font_size = _gtk_css_font_size_get_default (provider);
/* XXX: This is what WebKit does... */
font_size /= 1.2;
break;
case GTK_CSS_FONT_SIZE_LARGER:
*dependencies = GTK_CSS_DEPENDS_ON_PARENT;
if (parent_values)
font_size = _gtk_css_number_value_get (_gtk_css_computed_values_get_value (parent_values, GTK_CSS_PROPERTY_FONT_SIZE), 100);
else
font_size = _gtk_css_font_size_get_default (provider);
/* XXX: This is what WebKit does... */
font_size *= 1.2;
break;
}
return _gtk_css_number_value_new (font_size, GTK_CSS_PX);
}
static const GtkCssValueClass GTK_CSS_VALUE_FONT_SIZE = {
gtk_css_value_enum_free,
gtk_css_value_font_size_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue font_size_values[] = {
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_SMALLER, "smaller" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_LARGER, "larger" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_XX_SMALL, "xx-small" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_X_SMALL, "x-small" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_SMALL, "small" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_MEDIUM, "medium" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_LARGE, "large" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_X_LARGE, "x-large" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_XX_LARGE, "xx-large" }
};
GtkCssValue *
_gtk_css_font_size_value_new (GtkCssFontSize font_size)
{
g_return_val_if_fail (font_size < G_N_ELEMENTS (font_size_values), NULL);
return _gtk_css_value_ref (&font_size_values[font_size]);
}
GtkCssValue *
_gtk_css_font_size_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (font_size_values); i++)
{
if (_gtk_css_parser_try (parser, font_size_values[i].name, TRUE))
return _gtk_css_value_ref (&font_size_values[i]);
}
return NULL;
}
GtkCssFontSize
_gtk_css_font_size_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_FONT_SIZE, GTK_CSS_FONT_SIZE_MEDIUM);
return value->value;
}
/* PangoStyle */
static const GtkCssValueClass GTK_CSS_VALUE_FONT_STYLE = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue font_style_values[] = {
{ &GTK_CSS_VALUE_FONT_STYLE, 1, PANGO_STYLE_NORMAL, "normal" },
{ &GTK_CSS_VALUE_FONT_STYLE, 1, PANGO_STYLE_OBLIQUE, "oblique" },
{ &GTK_CSS_VALUE_FONT_STYLE, 1, PANGO_STYLE_ITALIC, "italic" }
};
GtkCssValue *
_gtk_css_font_style_value_new (PangoStyle font_style)
{
g_return_val_if_fail (font_style < G_N_ELEMENTS (font_style_values), NULL);
return _gtk_css_value_ref (&font_style_values[font_style]);
}
GtkCssValue *
_gtk_css_font_style_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (font_style_values); i++)
{
if (_gtk_css_parser_try (parser, font_style_values[i].name, TRUE))
return _gtk_css_value_ref (&font_style_values[i]);
}
return NULL;
}
PangoStyle
_gtk_css_font_style_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_FONT_STYLE, PANGO_STYLE_NORMAL);
return value->value;
}
/* PangoVariant */
static const GtkCssValueClass GTK_CSS_VALUE_FONT_VARIANT = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue font_variant_values[] = {
{ &GTK_CSS_VALUE_FONT_VARIANT, 1, PANGO_VARIANT_NORMAL, "normal" },
{ &GTK_CSS_VALUE_FONT_VARIANT, 1, PANGO_VARIANT_SMALL_CAPS, "small-caps" }
};
GtkCssValue *
_gtk_css_font_variant_value_new (PangoVariant font_variant)
{
g_return_val_if_fail (font_variant < G_N_ELEMENTS (font_variant_values), NULL);
return _gtk_css_value_ref (&font_variant_values[font_variant]);
}
GtkCssValue *
_gtk_css_font_variant_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (font_variant_values); i++)
{
if (_gtk_css_parser_try (parser, font_variant_values[i].name, TRUE))
return _gtk_css_value_ref (&font_variant_values[i]);
}
return NULL;
}
PangoVariant
_gtk_css_font_variant_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_FONT_VARIANT, PANGO_VARIANT_NORMAL);
return value->value;
}
/* PangoWeight */
static const GtkCssValueClass GTK_CSS_VALUE_FONT_WEIGHT = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue font_weight_values[] = {
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_THIN, "100" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_ULTRALIGHT, "200" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_LIGHT, "300" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_NORMAL, "normal" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_MEDIUM, "500" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_SEMIBOLD, "600" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_BOLD, "bold" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_ULTRABOLD, "800" },
{ &GTK_CSS_VALUE_FONT_WEIGHT, 1, PANGO_WEIGHT_HEAVY, "900" }
};
GtkCssValue *
_gtk_css_font_weight_value_new (PangoWeight font_weight)
{
guint i;
gint w;
w = ((font_weight + 50) / 100) * 100;
for (i = 0; i < G_N_ELEMENTS (font_weight_values); i++)
{
if (font_weight_values[i].value == w)
return _gtk_css_value_ref (&font_weight_values[i]);
}
g_return_val_if_reached (NULL);
}
GtkCssValue *
_gtk_css_font_weight_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (font_weight_values); i++)
{
if (_gtk_css_parser_try (parser, font_weight_values[i].name, TRUE))
return _gtk_css_value_ref (&font_weight_values[i]);
}
/* special cases go here */
if (_gtk_css_parser_try (parser, "400", TRUE))
return _gtk_css_value_ref (&font_weight_values[3]);
if (_gtk_css_parser_try (parser, "700", TRUE))
return _gtk_css_value_ref (&font_weight_values[6]);
return NULL;
}
PangoWeight
_gtk_css_font_weight_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_FONT_WEIGHT, PANGO_WEIGHT_NORMAL);
return value->value;
}
/* GtkCssArea */
static const GtkCssValueClass GTK_CSS_VALUE_AREA = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue area_values[] = {
{ &GTK_CSS_VALUE_AREA, 1, GTK_CSS_AREA_BORDER_BOX, "border-box" },
{ &GTK_CSS_VALUE_AREA, 1, GTK_CSS_AREA_PADDING_BOX, "padding-box" },
{ &GTK_CSS_VALUE_AREA, 1, GTK_CSS_AREA_CONTENT_BOX, "content-box" }
};
GtkCssValue *
_gtk_css_area_value_new (GtkCssArea area)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (area_values); i++)
{
if (area_values[i].value == area)
return _gtk_css_value_ref (&area_values[i]);
}
g_return_val_if_reached (NULL);
}
GtkCssValue *
_gtk_css_area_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (area_values); i++)
{
if (_gtk_css_parser_try (parser, area_values[i].name, TRUE))
return _gtk_css_value_ref (&area_values[i]);
}
return NULL;
}
GtkCssArea
_gtk_css_area_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_AREA, GTK_CSS_AREA_BORDER_BOX);
return value->value;
}
/* GtkCssDirection */
static const GtkCssValueClass GTK_CSS_VALUE_DIRECTION = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue direction_values[] = {
{ &GTK_CSS_VALUE_DIRECTION, 1, GTK_CSS_DIRECTION_NORMAL, "normal" },
{ &GTK_CSS_VALUE_DIRECTION, 1, GTK_CSS_DIRECTION_REVERSE, "reverse" },
{ &GTK_CSS_VALUE_DIRECTION, 1, GTK_CSS_DIRECTION_ALTERNATE, "alternate" },
{ &GTK_CSS_VALUE_DIRECTION, 1, GTK_CSS_DIRECTION_ALTERNATE_REVERSE, "alternate-reverse" }
};
GtkCssValue *
_gtk_css_direction_value_new (GtkCssDirection direction)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (direction_values); i++)
{
if (direction_values[i].value == direction)
return _gtk_css_value_ref (&direction_values[i]);
}
g_return_val_if_reached (NULL);
}
GtkCssValue *
_gtk_css_direction_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (direction_values); i++)
{
if (_gtk_css_parser_try (parser, direction_values[i].name, TRUE))
return _gtk_css_value_ref (&direction_values[i]);
}
return NULL;
}
GtkCssDirection
_gtk_css_direction_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_DIRECTION, GTK_CSS_DIRECTION_NORMAL);
return value->value;
}
/* GtkCssPlayState */
static const GtkCssValueClass GTK_CSS_VALUE_PLAY_STATE = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue play_state_values[] = {
{ &GTK_CSS_VALUE_PLAY_STATE, 1, GTK_CSS_PLAY_STATE_RUNNING, "running" },
{ &GTK_CSS_VALUE_PLAY_STATE, 1, GTK_CSS_PLAY_STATE_PAUSED, "paused" }
};
GtkCssValue *
_gtk_css_play_state_value_new (GtkCssPlayState play_state)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (play_state_values); i++)
{
if (play_state_values[i].value == play_state)
return _gtk_css_value_ref (&play_state_values[i]);
}
g_return_val_if_reached (NULL);
}
GtkCssValue *
_gtk_css_play_state_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (play_state_values); i++)
{
if (_gtk_css_parser_try (parser, play_state_values[i].name, TRUE))
return _gtk_css_value_ref (&play_state_values[i]);
}
return NULL;
}
GtkCssPlayState
_gtk_css_play_state_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_PLAY_STATE, GTK_CSS_PLAY_STATE_RUNNING);
return value->value;
}
/* GtkCssFillMode */
static const GtkCssValueClass GTK_CSS_VALUE_FILL_MODE = {
gtk_css_value_enum_free,
gtk_css_value_enum_compute,
gtk_css_value_enum_equal,
gtk_css_value_enum_transition,
gtk_css_value_enum_print
};
static GtkCssValue fill_mode_values[] = {
{ &GTK_CSS_VALUE_FILL_MODE, 1, GTK_CSS_FILL_NONE, "none" },
{ &GTK_CSS_VALUE_FILL_MODE, 1, GTK_CSS_FILL_FORWARDS, "forwards" },
{ &GTK_CSS_VALUE_FILL_MODE, 1, GTK_CSS_FILL_BACKWARDS, "backwards" },
{ &GTK_CSS_VALUE_FILL_MODE, 1, GTK_CSS_FILL_BOTH, "both" }
};
GtkCssValue *
_gtk_css_fill_mode_value_new (GtkCssFillMode fill_mode)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (fill_mode_values); i++)
{
if (fill_mode_values[i].value == fill_mode)
return _gtk_css_value_ref (&fill_mode_values[i]);
}
g_return_val_if_reached (NULL);
}
GtkCssValue *
_gtk_css_fill_mode_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (fill_mode_values); i++)
{
if (_gtk_css_parser_try (parser, fill_mode_values[i].name, TRUE))
return _gtk_css_value_ref (&fill_mode_values[i]);
}
return NULL;
}
GtkCssFillMode
_gtk_css_fill_mode_value_get (const GtkCssValue *value)
{
g_return_val_if_fail (value->class == &GTK_CSS_VALUE_FILL_MODE, GTK_CSS_FILL_NONE);
return value->value;
}