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gtk2/gtk/gtkcssstyle.c
Matthias Clasen 726c9e83d2 css: Allow fractional letterspacing 
Something like letter-spacing: -0.5px make a lot of
sense. But we were handling the number as integer
somewhere, loosing the fractional part.

Fixes: #5034
2022-07-10 15:22:18 -04:00

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/*
* 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: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkprivate.h"
#include "gtkcssstyleprivate.h"
#include "gtkcssanimationprivate.h"
#include "gtkcssarrayvalueprivate.h"
#include "gtkcssenumvalueprivate.h"
#include "gtkcssinheritvalueprivate.h"
#include "gtkcssinitialvalueprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkcsscolorvalueprivate.h"
#include "gtkcssshorthandpropertyprivate.h"
#include "gtkcssstringvalueprivate.h"
#include "gtkcssfontvariationsvalueprivate.h"
#include "gtkcssfontfeaturesvalueprivate.h"
#include "gtkcsslineheightvalueprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkcsstransitionprivate.h"
#include "gtkstyleanimationprivate.h"
#include "gtkstylepropertyprivate.h"
#include "gtkstyleproviderprivate.h"
G_DEFINE_ABSTRACT_TYPE (GtkCssStyle, gtk_css_style, G_TYPE_OBJECT)
static GtkCssSection *
gtk_css_style_real_get_section (GtkCssStyle *style,
guint id)
{
return NULL;
}
static gboolean
gtk_css_style_real_is_static (GtkCssStyle *style)
{
return TRUE;
}
static void
gtk_css_style_finalize (GObject *object)
{
GtkCssStyle *style = GTK_CSS_STYLE (object);
gtk_css_values_unref ((GtkCssValues *)style->core);
gtk_css_values_unref ((GtkCssValues *)style->background);
gtk_css_values_unref ((GtkCssValues *)style->border);
gtk_css_values_unref ((GtkCssValues *)style->icon);
gtk_css_values_unref ((GtkCssValues *)style->outline);
gtk_css_values_unref ((GtkCssValues *)style->font);
gtk_css_values_unref ((GtkCssValues *)style->font_variant);
gtk_css_values_unref ((GtkCssValues *)style->animation);
gtk_css_values_unref ((GtkCssValues *)style->transition);
gtk_css_values_unref ((GtkCssValues *)style->size);
gtk_css_values_unref ((GtkCssValues *)style->other);
G_OBJECT_CLASS (gtk_css_style_parent_class)->finalize (object);
}
static void
gtk_css_style_class_init (GtkCssStyleClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_css_style_finalize;
klass->get_section = gtk_css_style_real_get_section;
klass->is_static = gtk_css_style_real_is_static;
}
static void
gtk_css_style_init (GtkCssStyle *style)
{
}
GtkCssValue *
gtk_css_style_get_value (GtkCssStyle *style,
guint id)
{
switch (id)
{
case GTK_CSS_PROPERTY_COLOR:
return style->core->color;
case GTK_CSS_PROPERTY_DPI:
return style->core->dpi;
case GTK_CSS_PROPERTY_FONT_SIZE:
return style->core->font_size;
case GTK_CSS_PROPERTY_ICON_PALETTE:
return style->core->icon_palette;
case GTK_CSS_PROPERTY_BACKGROUND_COLOR:
return style->background->background_color;
case GTK_CSS_PROPERTY_FONT_FAMILY:
return style->font->font_family;
case GTK_CSS_PROPERTY_FONT_STYLE:
return style->font->font_style;
case GTK_CSS_PROPERTY_FONT_WEIGHT:
return style->font->font_weight;
case GTK_CSS_PROPERTY_FONT_STRETCH:
return style->font->font_stretch;
case GTK_CSS_PROPERTY_LETTER_SPACING:
return style->font->letter_spacing;
case GTK_CSS_PROPERTY_LINE_HEIGHT:
return style->font->line_height;
case GTK_CSS_PROPERTY_TEXT_DECORATION_LINE:
return style->font_variant->text_decoration_line;
case GTK_CSS_PROPERTY_TEXT_DECORATION_COLOR:
return style->font_variant->text_decoration_color ? style->font_variant->text_decoration_color : style->core->color;
case GTK_CSS_PROPERTY_TEXT_DECORATION_STYLE:
return style->font_variant->text_decoration_style;
case GTK_CSS_PROPERTY_TEXT_TRANSFORM:
return style->font_variant->text_transform;
case GTK_CSS_PROPERTY_FONT_KERNING:
return style->font_variant->font_kerning;
case GTK_CSS_PROPERTY_FONT_VARIANT_LIGATURES:
return style->font_variant->font_variant_ligatures;
case GTK_CSS_PROPERTY_FONT_VARIANT_POSITION:
return style->font_variant->font_variant_position;
case GTK_CSS_PROPERTY_FONT_VARIANT_CAPS:
return style->font_variant->font_variant_caps;
case GTK_CSS_PROPERTY_FONT_VARIANT_NUMERIC:
return style->font_variant->font_variant_numeric;
case GTK_CSS_PROPERTY_FONT_VARIANT_ALTERNATES:
return style->font_variant->font_variant_alternates;
case GTK_CSS_PROPERTY_FONT_VARIANT_EAST_ASIAN:
return style->font_variant->font_variant_east_asian;
case GTK_CSS_PROPERTY_TEXT_SHADOW:
return style->font->text_shadow;
case GTK_CSS_PROPERTY_BOX_SHADOW:
return style->background->box_shadow;
case GTK_CSS_PROPERTY_MARGIN_TOP:
return style->size->margin_top;
case GTK_CSS_PROPERTY_MARGIN_LEFT:
return style->size->margin_left;
case GTK_CSS_PROPERTY_MARGIN_BOTTOM:
return style->size->margin_bottom;
case GTK_CSS_PROPERTY_MARGIN_RIGHT:
return style->size->margin_right;
case GTK_CSS_PROPERTY_PADDING_TOP:
return style->size->padding_top;
case GTK_CSS_PROPERTY_PADDING_LEFT:
return style->size->padding_left;
case GTK_CSS_PROPERTY_PADDING_BOTTOM:
return style->size->padding_bottom;
case GTK_CSS_PROPERTY_PADDING_RIGHT:
return style->size->padding_right;
case GTK_CSS_PROPERTY_BORDER_TOP_STYLE:
return style->border->border_top_style;
case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
return style->border->border_top_width;
case GTK_CSS_PROPERTY_BORDER_LEFT_STYLE:
return style->border->border_left_style;
case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
return style->border->border_left_width;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE:
return style->border->border_bottom_style;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
return style->border->border_bottom_width;
case GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE:
return style->border->border_right_style;
case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
return style->border->border_right_width;
case GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS:
return style->border->border_top_left_radius;
case GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS:
return style->border->border_top_right_radius;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS:
return style->border->border_bottom_right_radius;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS:
return style->border->border_bottom_left_radius;
case GTK_CSS_PROPERTY_OUTLINE_STYLE:
return style->outline->outline_style;
case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
return style->outline->outline_width;
case GTK_CSS_PROPERTY_OUTLINE_OFFSET:
return style->outline->outline_offset;
case GTK_CSS_PROPERTY_BACKGROUND_CLIP:
return style->background->background_clip;
case GTK_CSS_PROPERTY_BACKGROUND_ORIGIN:
return style->background->background_origin;
case GTK_CSS_PROPERTY_BACKGROUND_SIZE:
return style->background->background_size;
case GTK_CSS_PROPERTY_BACKGROUND_POSITION:
return style->background->background_position;
case GTK_CSS_PROPERTY_BORDER_TOP_COLOR:
return style->border->border_top_color ? style->border->border_top_color : style->core->color;
case GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR:
return style->border->border_right_color ? style->border->border_right_color : style->core->color;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR:
return style->border->border_bottom_color ? style->border->border_bottom_color : style->core->color;
case GTK_CSS_PROPERTY_BORDER_LEFT_COLOR:
return style->border->border_left_color ? style->border->border_left_color: style->core->color;
case GTK_CSS_PROPERTY_OUTLINE_COLOR:
return style->outline->outline_color ? style->outline->outline_color : style->core->color;
case GTK_CSS_PROPERTY_BACKGROUND_REPEAT:
return style->background->background_repeat;
case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
return style->background->background_image;
case GTK_CSS_PROPERTY_BACKGROUND_BLEND_MODE:
return style->background->background_blend_mode;
case GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE:
return style->border->border_image_source;
case GTK_CSS_PROPERTY_BORDER_IMAGE_REPEAT:
return style->border->border_image_repeat;
case GTK_CSS_PROPERTY_BORDER_IMAGE_SLICE:
return style->border->border_image_slice;
case GTK_CSS_PROPERTY_BORDER_IMAGE_WIDTH:
return style->border->border_image_width;
case GTK_CSS_PROPERTY_ICON_SOURCE:
return style->other->icon_source;
case GTK_CSS_PROPERTY_ICON_SIZE:
return style->icon->icon_size;
case GTK_CSS_PROPERTY_ICON_SHADOW:
return style->icon->icon_shadow;
case GTK_CSS_PROPERTY_ICON_STYLE:
return style->icon->icon_style;
case GTK_CSS_PROPERTY_ICON_TRANSFORM:
return style->other->icon_transform;
case GTK_CSS_PROPERTY_ICON_FILTER:
return style->other->icon_filter;
case GTK_CSS_PROPERTY_BORDER_SPACING:
return style->size->border_spacing;
case GTK_CSS_PROPERTY_TRANSFORM:
return style->other->transform;
case GTK_CSS_PROPERTY_TRANSFORM_ORIGIN:
return style->other->transform_origin;
case GTK_CSS_PROPERTY_MIN_WIDTH:
return style->size->min_width;
case GTK_CSS_PROPERTY_MIN_HEIGHT:
return style->size->min_height;
case GTK_CSS_PROPERTY_TRANSITION_PROPERTY:
return style->transition->transition_property;
case GTK_CSS_PROPERTY_TRANSITION_DURATION:
return style->transition->transition_duration;
case GTK_CSS_PROPERTY_TRANSITION_TIMING_FUNCTION:
return style->transition->transition_timing_function;
case GTK_CSS_PROPERTY_TRANSITION_DELAY:
return style->transition->transition_delay;
case GTK_CSS_PROPERTY_ANIMATION_NAME:
return style->animation->animation_name;
case GTK_CSS_PROPERTY_ANIMATION_DURATION:
return style->animation->animation_duration;
case GTK_CSS_PROPERTY_ANIMATION_TIMING_FUNCTION:
return style->animation->animation_timing_function;
case GTK_CSS_PROPERTY_ANIMATION_ITERATION_COUNT:
return style->animation->animation_iteration_count;
case GTK_CSS_PROPERTY_ANIMATION_DIRECTION:
return style->animation->animation_direction;
case GTK_CSS_PROPERTY_ANIMATION_PLAY_STATE:
return style->animation->animation_play_state;
case GTK_CSS_PROPERTY_ANIMATION_DELAY:
return style->animation->animation_delay;
case GTK_CSS_PROPERTY_ANIMATION_FILL_MODE:
return style->animation->animation_fill_mode;
case GTK_CSS_PROPERTY_OPACITY:
return style->other->opacity;
case GTK_CSS_PROPERTY_FILTER:
return style->other->filter;
case GTK_CSS_PROPERTY_CARET_COLOR:
return style->font->caret_color ? style->font->caret_color : style->core->color;
case GTK_CSS_PROPERTY_SECONDARY_CARET_COLOR:
return style->font->secondary_caret_color ? style->font->secondary_caret_color : style->core->color;
case GTK_CSS_PROPERTY_FONT_FEATURE_SETTINGS:
return style->font->font_feature_settings;
case GTK_CSS_PROPERTY_FONT_VARIATION_SETTINGS:
return style->font->font_variation_settings;
default:
g_assert_not_reached ();
}
}
GtkCssSection *
gtk_css_style_get_section (GtkCssStyle *style,
guint id)
{
gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (style), NULL);
return GTK_CSS_STYLE_GET_CLASS (style)->get_section (style, id);
}
gboolean
gtk_css_style_is_static (GtkCssStyle *style)
{
return GTK_CSS_STYLE_GET_CLASS (style)->is_static (style);
}
GtkCssStaticStyle *
gtk_css_style_get_static_style (GtkCssStyle *style)
{
gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (style), NULL);
return GTK_CSS_STYLE_GET_CLASS (style)->get_static_style (style);
}
/*
* gtk_css_style_print:
* @style: a `GtkCssStyle`
* @string: the `GString` to print to
* @indent: level of indentation to use
* @skip_initial: %TRUE to skip properties that have their initial value
*
* Print the @style to @string, in CSS format. Every property is printed
* on a line by itself, indented by @indent spaces. If @skip_initial is
* %TRUE, properties are only printed if their value in @style is different
* from the initial value of the property.
*
* Returns: %TRUE is any properties have been printed
*/
gboolean
gtk_css_style_print (GtkCssStyle *style,
GString *string,
guint indent,
gboolean skip_initial)
{
guint i;
gboolean retval = FALSE;
g_return_val_if_fail (GTK_IS_CSS_STYLE (style), FALSE);
g_return_val_if_fail (string != NULL, FALSE);
for (i = 0; i < _gtk_css_style_property_get_n_properties (); i++)
{
GtkCssSection *section;
GtkCssStyleProperty *prop;
GtkCssValue *value;
const char *name;
section = gtk_css_style_get_section (style, i);
if (!section && skip_initial)
continue;
prop = _gtk_css_style_property_lookup_by_id (i);
name = _gtk_style_property_get_name (GTK_STYLE_PROPERTY (prop));
value = gtk_css_style_get_value (style, i);
g_string_append_printf (string, "%*s%s: ", indent, "", name);
_gtk_css_value_print (value, string);
g_string_append_c (string, ';');
if (section)
{
g_string_append (string, " /* ");
gtk_css_section_print (section, string);
g_string_append (string, " */");
}
g_string_append_c (string, '\n');
retval = TRUE;
}
return retval;
}
char *
gtk_css_style_to_string (GtkCssStyle *style)
{
GString *string;
g_return_val_if_fail (GTK_IS_CSS_STYLE (style), NULL);
string = g_string_new ("");
gtk_css_style_print (style, string, 0, FALSE);
return g_string_free (string, FALSE);
}
static PangoUnderline
get_pango_underline_from_style (GtkTextDecorationStyle style)
{
switch (style)
{
case GTK_CSS_TEXT_DECORATION_STYLE_DOUBLE:
return PANGO_UNDERLINE_DOUBLE;
case GTK_CSS_TEXT_DECORATION_STYLE_WAVY:
return PANGO_UNDERLINE_ERROR;
case GTK_CSS_TEXT_DECORATION_STYLE_SOLID:
default:
return PANGO_UNDERLINE_SINGLE;
}
g_return_val_if_reached (PANGO_UNDERLINE_SINGLE);
}
PangoTextTransform
gtk_css_style_get_pango_text_transform (GtkCssStyle *style)
{
switch (_gtk_css_text_transform_value_get (style->font_variant->text_transform))
{
case GTK_CSS_TEXT_TRANSFORM_NONE:
return PANGO_TEXT_TRANSFORM_NONE;
case GTK_CSS_TEXT_TRANSFORM_LOWERCASE:
return PANGO_TEXT_TRANSFORM_LOWERCASE;
case GTK_CSS_TEXT_TRANSFORM_UPPERCASE:
return PANGO_TEXT_TRANSFORM_UPPERCASE;
case GTK_CSS_TEXT_TRANSFORM_CAPITALIZE:
return PANGO_TEXT_TRANSFORM_CAPITALIZE;
default:
return PANGO_TEXT_TRANSFORM_NONE;
}
}
static PangoOverline
get_pango_overline_from_style (GtkTextDecorationStyle style)
{
return PANGO_OVERLINE_SINGLE;
}
static PangoAttrList *
add_pango_attr (PangoAttrList *attrs,
PangoAttribute *attr)
{
if (attrs == NULL)
attrs = pango_attr_list_new ();
pango_attr_list_insert (attrs, attr);
return attrs;
}
static void
append_separated (GString **s,
const char *text)
{
if (G_UNLIKELY (!*s))
*s = g_string_new (NULL);
if ((*s)->len > 0)
g_string_append (*s, ", ");
g_string_append (*s, text);
}
char *
gtk_css_style_compute_font_features (GtkCssStyle *style)
{
GtkCssFontVariantLigature ligatures;
GtkCssFontVariantNumeric numeric;
GtkCssFontVariantEastAsian east_asian;
char *settings;
GString *s = NULL;
switch (_gtk_css_font_kerning_value_get (style->font_variant->font_kerning))
{
case GTK_CSS_FONT_KERNING_NORMAL:
append_separated (&s, "kern 1");
break;
case GTK_CSS_FONT_KERNING_NONE:
append_separated (&s, "kern 0");
break;
case GTK_CSS_FONT_KERNING_AUTO:
default:
break;
}
ligatures = _gtk_css_font_variant_ligature_value_get (style->font_variant->font_variant_ligatures);
if (ligatures == GTK_CSS_FONT_VARIANT_LIGATURE_NORMAL)
{
/* all defaults */
}
else if (ligatures == GTK_CSS_FONT_VARIANT_LIGATURE_NONE)
append_separated (&s, "liga 0, clig 0, dlig 0, hlig 0, calt 0");
else
{
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_COMMON_LIGATURES)
append_separated (&s, "liga 1, clig 1");
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_NO_COMMON_LIGATURES)
append_separated (&s, "liga 0, clig 0");
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_DISCRETIONARY_LIGATURES)
append_separated (&s, "dlig 1");
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_NO_DISCRETIONARY_LIGATURES)
append_separated (&s, "dlig 0");
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_HISTORICAL_LIGATURES)
append_separated (&s, "hlig 1");
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_NO_HISTORICAL_LIGATURES)
append_separated (&s, "hlig 0");
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_CONTEXTUAL)
append_separated (&s, "calt 1");
if (ligatures & GTK_CSS_FONT_VARIANT_LIGATURE_NO_CONTEXTUAL)
append_separated (&s, "calt 0");
}
switch (_gtk_css_font_variant_position_value_get (style->font_variant->font_variant_position))
{
case GTK_CSS_FONT_VARIANT_POSITION_SUB:
append_separated (&s, "subs 1");
break;
case GTK_CSS_FONT_VARIANT_POSITION_SUPER:
append_separated (&s, "sups 1");
break;
case GTK_CSS_FONT_VARIANT_POSITION_NORMAL:
default:
break;
}
numeric = _gtk_css_font_variant_numeric_value_get (style->font_variant->font_variant_numeric);
if (numeric == GTK_CSS_FONT_VARIANT_NUMERIC_NORMAL)
{
/* all defaults */
}
else
{
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_LINING_NUMS)
append_separated (&s, "lnum 1");
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_OLDSTYLE_NUMS)
append_separated (&s, "onum 1");
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_PROPORTIONAL_NUMS)
append_separated (&s, "pnum 1");
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_TABULAR_NUMS)
append_separated (&s, "tnum 1");
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_DIAGONAL_FRACTIONS)
append_separated (&s, "frac 1");
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_STACKED_FRACTIONS)
append_separated (&s, "afrc 1");
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_ORDINAL)
append_separated (&s, "ordn 1");
if (numeric & GTK_CSS_FONT_VARIANT_NUMERIC_SLASHED_ZERO)
append_separated (&s, "zero 1");
}
switch (_gtk_css_font_variant_alternate_value_get (style->font_variant->font_variant_alternates))
{
case GTK_CSS_FONT_VARIANT_ALTERNATE_HISTORICAL_FORMS:
append_separated (&s, "hist 1");
break;
case GTK_CSS_FONT_VARIANT_ALTERNATE_NORMAL:
default:
break;
}
east_asian = _gtk_css_font_variant_east_asian_value_get (style->font_variant->font_variant_east_asian);
if (east_asian == GTK_CSS_FONT_VARIANT_EAST_ASIAN_NORMAL)
{
/* all defaults */
}
else
{
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_JIS78)
append_separated (&s, "jp78 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_JIS83)
append_separated (&s, "jp83 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_JIS90)
append_separated (&s, "jp90 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_JIS04)
append_separated (&s, "jp04 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_SIMPLIFIED)
append_separated (&s, "smpl 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_TRADITIONAL)
append_separated (&s, "trad 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_FULL_WIDTH)
append_separated (&s, "fwid 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_PROPORTIONAL)
append_separated (&s, "pwid 1");
if (east_asian & GTK_CSS_FONT_VARIANT_EAST_ASIAN_RUBY)
append_separated (&s, "ruby 1");
}
settings = gtk_css_font_features_value_get_features (style->font->font_feature_settings);
if (settings)
{
append_separated (&s, settings);
g_free (settings);
}
if (s)
return g_string_free (s, FALSE);
else
return NULL;
}
PangoAttrList *
gtk_css_style_get_pango_attributes (GtkCssStyle *style)
{
PangoAttrList *attrs = NULL;
GtkTextDecorationLine decoration_line;
GtkTextDecorationStyle decoration_style;
const GdkRGBA *color;
const GdkRGBA *decoration_color;
double letter_spacing;
/* text-decoration */
decoration_line = _gtk_css_text_decoration_line_value_get (style->font_variant->text_decoration_line);
decoration_style = _gtk_css_text_decoration_style_value_get (style->font_variant->text_decoration_style);
color = gtk_css_color_value_get_rgba (style->core->color);
decoration_color = gtk_css_color_value_get_rgba (style->font_variant->text_decoration_color
? style->font_variant->text_decoration_color
: style->core->color);
if (decoration_line & GTK_CSS_TEXT_DECORATION_LINE_UNDERLINE)
{
attrs = add_pango_attr (attrs, pango_attr_underline_new (get_pango_underline_from_style (decoration_style)));
if (!gdk_rgba_equal (color, decoration_color))
attrs = add_pango_attr (attrs, pango_attr_underline_color_new (decoration_color->red * 65535. + 0.5,
decoration_color->green * 65535. + 0.5,
decoration_color->blue * 65535. + 0.5));
}
if (decoration_line & GTK_CSS_TEXT_DECORATION_LINE_OVERLINE)
{
attrs = add_pango_attr (attrs, pango_attr_overline_new (get_pango_overline_from_style (decoration_style)));
if (!gdk_rgba_equal (color, decoration_color))
attrs = add_pango_attr (attrs, pango_attr_overline_color_new (decoration_color->red * 65535. + 0.5,
decoration_color->green * 65535. + 0.5,
decoration_color->blue * 65535. + 0.5));
}
if (decoration_line & GTK_CSS_TEXT_DECORATION_LINE_LINE_THROUGH)
{
attrs = add_pango_attr (attrs, pango_attr_strikethrough_new (TRUE));
if (!gdk_rgba_equal (color, decoration_color))
attrs = add_pango_attr (attrs, pango_attr_strikethrough_color_new (decoration_color->red * 65535. + 0.5,
decoration_color->green * 65535. + 0.5,
decoration_color->blue * 65535. + 0.5));
}
/* letter-spacing */
letter_spacing = _gtk_css_number_value_get (style->font->letter_spacing, 100);
if (letter_spacing != 0)
{
attrs = add_pango_attr (attrs, pango_attr_letter_spacing_new (letter_spacing * PANGO_SCALE));
}
/* line-height */
{
double height = gtk_css_line_height_value_get (style->font->line_height);
if (height != 0.0)
{
if (gtk_css_number_value_get_dimension (style->font->line_height) == GTK_CSS_DIMENSION_LENGTH)
attrs = add_pango_attr (attrs, pango_attr_line_height_new_absolute (height * PANGO_SCALE));
else
attrs = add_pango_attr (attrs, pango_attr_line_height_new (height));
}
}
/* casing variants */
switch (_gtk_css_font_variant_caps_value_get (style->font_variant->font_variant_caps))
{
case GTK_CSS_FONT_VARIANT_CAPS_SMALL_CAPS:
attrs = add_pango_attr (attrs, pango_attr_variant_new (PANGO_VARIANT_SMALL_CAPS));
break;
case GTK_CSS_FONT_VARIANT_CAPS_ALL_SMALL_CAPS:
attrs = add_pango_attr (attrs, pango_attr_variant_new (PANGO_VARIANT_ALL_SMALL_CAPS));
break;
case GTK_CSS_FONT_VARIANT_CAPS_PETITE_CAPS:
attrs = add_pango_attr (attrs, pango_attr_variant_new (PANGO_VARIANT_PETITE_CAPS));
break;
case GTK_CSS_FONT_VARIANT_CAPS_ALL_PETITE_CAPS:
attrs = add_pango_attr (attrs, pango_attr_variant_new (PANGO_VARIANT_ALL_PETITE_CAPS));
break;
case GTK_CSS_FONT_VARIANT_CAPS_UNICASE:
attrs = add_pango_attr (attrs, pango_attr_variant_new (PANGO_VARIANT_UNICASE));
break;
case GTK_CSS_FONT_VARIANT_CAPS_TITLING_CAPS:
attrs = add_pango_attr (attrs, pango_attr_variant_new (PANGO_VARIANT_TITLE_CAPS));
break;
case GTK_CSS_FONT_VARIANT_CAPS_NORMAL:
default:
break;
}
/* OpenType features */
{
char *font_features = gtk_css_style_compute_font_features (style);
if (font_features)
{
attrs = add_pango_attr (attrs, pango_attr_font_features_new (font_features));
g_free (font_features);
}
}
/* text-transform */
{
PangoTextTransform transform = gtk_css_style_get_pango_text_transform (style);
if (transform != PANGO_TEXT_TRANSFORM_NONE)
attrs = add_pango_attr (attrs, pango_attr_text_transform_new (transform));
}
return attrs;
}
PangoFontDescription *
gtk_css_style_get_pango_font (GtkCssStyle *style)
{
PangoFontDescription *description;
GtkCssValue *v;
char *str;
description = pango_font_description_new ();
v = style->font->font_family;
if (_gtk_css_array_value_get_n_values (v) > 1)
{
int i;
GString *s = g_string_new ("");
for (i = 0; i < _gtk_css_array_value_get_n_values (v); i++)
{
if (i > 0)
g_string_append (s, ",");
g_string_append (s, _gtk_css_string_value_get (_gtk_css_array_value_get_nth (v, i)));
}
pango_font_description_set_family (description, s->str);
g_string_free (s, TRUE);
}
else
{
pango_font_description_set_family (description,
_gtk_css_string_value_get (_gtk_css_array_value_get_nth (v, 0)));
}
v = style->core->font_size;
pango_font_description_set_absolute_size (description, round (_gtk_css_number_value_get (v, 100) * PANGO_SCALE));
v = style->font->font_style;
pango_font_description_set_style (description, _gtk_css_font_style_value_get (v));
v = style->font->font_weight;
pango_font_description_set_weight (description, _gtk_css_number_value_get (v, 100));
v = style->font->font_stretch;
pango_font_description_set_stretch (description, _gtk_css_font_stretch_value_get (v));
v = style->font->font_variation_settings;
str = gtk_css_font_variations_value_get_variations (v);
if (str)
pango_font_description_set_variations (description, str);
g_free (str);
return description;
}
/* Refcounted value structs */
static const int values_size[] = {
sizeof (GtkCssCoreValues),
sizeof (GtkCssBackgroundValues),
sizeof (GtkCssBorderValues),
sizeof (GtkCssIconValues),
sizeof (GtkCssOutlineValues),
sizeof (GtkCssFontValues),
sizeof (GtkCssFontVariantValues),
sizeof (GtkCssAnimationValues),
sizeof (GtkCssTransitionValues),
sizeof (GtkCssSizeValues),
sizeof (GtkCssOtherValues)
};
#define TYPE_INDEX(type) ((type) - ((type) % 2))
#define VALUES_SIZE(type) (values_size[(type) / 2])
#define N_VALUES(type) ((VALUES_SIZE(type) - sizeof (GtkCssValues)) / sizeof (GtkCssValue *))
#define GET_VALUES(v) (GtkCssValue **)((guint8 *)(v) + sizeof (GtkCssValues))
GtkCssValues *gtk_css_values_ref (GtkCssValues *values)
{
values->ref_count++;
return values;
}
static void
gtk_css_values_free (GtkCssValues *values)
{
int i;
GtkCssValue **v = GET_VALUES (values);
for (i = 0; i < N_VALUES (values->type); i++)
{
if (v[i])
gtk_css_value_unref (v[i]);
}
g_free (values);
}
void gtk_css_values_unref (GtkCssValues *values)
{
if (!values)
return;
values->ref_count--;
if (values->ref_count == 0)
gtk_css_values_free (values);
}
GtkCssValues *
gtk_css_values_copy (GtkCssValues *values)
{
GtkCssValues *copy;
GtkCssValue **v, **v2;
int i;
copy = gtk_css_values_new (TYPE_INDEX(values->type));
v = GET_VALUES (values);
v2 = GET_VALUES (copy);
for (i = 0; i < N_VALUES (values->type); i++)
{
if (v[i])
v2[i] = gtk_css_value_ref (v[i]);
}
return copy;
}
GtkCssValues *
gtk_css_values_new (GtkCssValuesType type)
{
GtkCssValues *values;
values = (GtkCssValues *)g_malloc0 (VALUES_SIZE(type));
values->ref_count = 1;
values->type = type;
return values;
}
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