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css: Add more features to font-size code

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We now support the keywords (like xx-small, medium, larger, smaller...)
and I've changed the default value to be "medium".

This required some shuffling of the "get default font size" code. But
all is well now.
This commit is contained in:
Benjamin Otte 2012-12-01 14:00:24 +01:00
parent 1dd3ee6b59
commit 0d9d576172
5 changed files with 170 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

147
gtk/gtkcssenumvalue.c
View File

@ -19,7 +19,9 @@
#include "gtkcssenumvalueprivate.h"
#include "gtkstylepropertyprivate.h"
#include "gtkcsscomputedvaluesprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkstyleproviderprivate.h"
/* repeated API */
@ -124,6 +126,149 @@ _gtk_css_border_style_value_get (const GtkCssValue *value)
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
static double
get_default_font_size (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,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
double font_size;
switch (value->value)
{
case GTK_CSS_FONT_SIZE_XX_SMALL:
font_size = get_default_font_size (provider) * 3. / 5;
break;
case GTK_CSS_FONT_SIZE_X_SMALL:
font_size = get_default_font_size (provider) * 3. / 4;
break;
case GTK_CSS_FONT_SIZE_SMALL:
font_size = get_default_font_size (provider) * 8. / 9;
break;
default:
g_assert_not_reached ();
/* fall thru */
case GTK_CSS_FONT_SIZE_MEDIUM:
font_size = get_default_font_size (provider);
break;
case GTK_CSS_FONT_SIZE_LARGE:
font_size = get_default_font_size (provider) * 6. / 5;
break;
case GTK_CSS_FONT_SIZE_X_LARGE:
font_size = get_default_font_size (provider) * 3. / 2;
break;
case GTK_CSS_FONT_SIZE_XX_LARGE:
font_size = get_default_font_size (provider) * 2;
break;
case GTK_CSS_FONT_SIZE_SMALLER:
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 = get_default_font_size (provider);
/* XXX: This is what WebKit does... */
font_size *= 1.2;
break;
case GTK_CSS_FONT_SIZE_LARGER:
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 = get_default_font_size (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_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" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_SMALLER, "smaller" },
{ &GTK_CSS_VALUE_FONT_SIZE, 1, GTK_CSS_FONT_SIZE_LARGER, "larger" },
};
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 = {

4
gtk/gtkcssenumvalueprivate.h
View File

@ -31,6 +31,10 @@ GtkCssValue * _gtk_css_border_style_value_new (GtkBorderStyle border
GtkCssValue * _gtk_css_border_style_value_try_parse (GtkCssParser *parser);
GtkBorderStyle _gtk_css_border_style_value_get (const GtkCssValue *value);
GtkCssValue * _gtk_css_font_size_value_new (GtkCssFontSize size);
GtkCssValue * _gtk_css_font_size_value_try_parse (GtkCssParser *parser);
GtkCssFontSize _gtk_css_font_size_value_get (const GtkCssValue *value);
GtkCssValue * _gtk_css_font_style_value_new (PangoStyle style);
GtkCssValue * _gtk_css_font_style_value_try_parse (GtkCssParser *parser);
PangoStyle _gtk_css_font_style_value_get (const GtkCssValue *value);

25
gtk/gtkcssinitialvalue.c
View File

@ -73,31 +73,6 @@ gtk_css_value_initial_compute (GtkCssValue *value,
}
break;
case GTK_CSS_PROPERTY_FONT_SIZE:
settings = _gtk_style_provider_private_get_settings (provider);
if (settings)
{
PangoFontDescription *description;
char *font_name;
GtkCssValue *value;
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)
break;
if (pango_font_description_get_set_fields (description) & PANGO_FONT_MASK_SIZE)
{
value = _gtk_css_number_value_new ((double) pango_font_description_get_size (description) / PANGO_SCALE, GTK_CSS_PX);
pango_font_description_free (description);
return value;
}
pango_font_description_free (description);
}
break;
default:
break;
}

8
gtk/gtkcssstylepropertyimpl.c
View File

@ -648,8 +648,13 @@ static GtkCssValue *
font_size_parse (GtkCssStyleProperty *property,
GtkCssParser *parser)
{
GtkCssValue *value;
gdouble d;
value = _gtk_css_font_size_value_try_parse (parser);
if (value)
return value;
if (!_gtk_css_parser_try_double (parser, &d))
{
_gtk_css_parser_error (parser, "Expected a number");
@ -878,8 +883,7 @@ _gtk_css_style_property_init_properties (void)
font_size_parse,
query_length_as_double,
assign_length_from_double,
/* XXX: This should be 'normal' */
_gtk_css_number_value_new (10.0, GTK_CSS_PX));
_gtk_css_font_size_value_new (GTK_CSS_FONT_SIZE_MEDIUM));
/* properties that aren't referenced when computing values
* start here */

14
gtk/gtkcsstypesprivate.h
View File

@ -161,6 +161,20 @@ typedef enum /*< skip >*/ {
GTK_CSS_FILL_BOTH
} GtkCssFillMode;
typedef enum /*< skip >*/ {
/* absolute font sizes */
GTK_CSS_FONT_SIZE_XX_SMALL,
GTK_CSS_FONT_SIZE_X_SMALL,
GTK_CSS_FONT_SIZE_SMALL,
GTK_CSS_FONT_SIZE_MEDIUM,
GTK_CSS_FONT_SIZE_LARGE,
GTK_CSS_FONT_SIZE_X_LARGE,
GTK_CSS_FONT_SIZE_XX_LARGE,
/* relative font sizes */
GTK_CSS_FONT_SIZE_SMALLER,
GTK_CSS_FONT_SIZE_LARGER
} GtkCssFontSize;
/* for the order in arrays */
typedef enum /*< skip >*/ {
GTK_CSS_TOP,