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css: start background-repeat

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By default, a background image is stretched. Instead, it is worth to
have a tiled background.

This patch allows background surfaces to be repeated or not, and should
be compatible with future extensions and CSS.

https://bugzilla.gnome.org/show_bug.cgi?id=663522
This commit is contained in:
Marc-André Lureau 2011-11-06 19:33:05 +01:00 committed by Cosimo Cecchi
parent ee7ac4fa44
commit 3b436eec6d
6 changed files with 114 additions and 3 deletions
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10
gtk/gtkcssprovider.c
View File

@ -840,6 +840,16 @@
* </entry>
* </row>
* <row>
* <entry>background-repeat</entry>
* <entry>[repeat|no-repeat]</entry>
* <entry>internal</entry>
* <entry><literallayout>background-repeat: no-repeat;</literallayout>
* If not specified, the style doesn't respect the CSS3
* specification, since the background will be
* stretched to fill the area.
* </entry>
* </row>
* <row>
* <entry>border-top-width</entry>
* <entry>integer</entry>
* <entry>#gint</entry>

2
gtk/gtkcsstypes.c
View File

@ -31,6 +31,8 @@ type_name ## _copy (const TypeName *foo) \
\
G_DEFINE_BOXED_TYPE (TypeName, type_name, type_name ## _copy, g_free)
DEFINE_BOXED_TYPE_WITH_COPY_FUNC (GtkCssBackgroundRepeat, _gtk_css_background_repeat)
DEFINE_BOXED_TYPE_WITH_COPY_FUNC (GtkCssBorderCornerRadius, _gtk_css_border_corner_radius)
DEFINE_BOXED_TYPE_WITH_COPY_FUNC (GtkCssBorderRadius, _gtk_css_border_radius)
DEFINE_BOXED_TYPE_WITH_COPY_FUNC (GtkCssBorderImageRepeat, _gtk_css_border_image_repeat)

17
gtk/gtkcsstypesprivate.h
View File

@ -24,6 +24,12 @@
G_BEGIN_DECLS
typedef enum {
GTK_CSS_BACKGROUND_REPEAT_STYLE_NONE,
GTK_CSS_BACKGROUND_REPEAT_STYLE_REPEAT,
GTK_CSS_BACKGROUND_REPEAT_STYLE_NO_REPEAT,
} GtkCssBackgroundRepeatStyle;
typedef enum {
GTK_CSS_REPEAT_STYLE_NONE,
GTK_CSS_REPEAT_STYLE_REPEAT,
@ -31,10 +37,17 @@ typedef enum {
GTK_CSS_REPEAT_STYLE_SPACE
} GtkCssBorderRepeatStyle;
typedef struct _GtkCssBackgroundRepeat GtkCssBackgroundRepeat;
typedef struct _GtkCssBorderCornerRadius GtkCssBorderCornerRadius;
typedef struct _GtkCssBorderRadius GtkCssBorderRadius;
typedef struct _GtkCssBorderImageRepeat GtkCssBorderImageRepeat;
struct _GtkCssBackgroundRepeat {
/* FIXME: will have vrepeat and hrepeat instead */
GtkCssBackgroundRepeatStyle repeat;
};
struct _GtkCssBorderCornerRadius {
double horizontal;
double vertical;
@ -52,10 +65,14 @@ struct _GtkCssBorderImageRepeat {
GtkCssBorderRepeatStyle hrepeat;
};
#define GTK_TYPE_CSS_BACKGROUND_REPEAT _gtk_css_background_repeat_get_type ()
#define GTK_TYPE_CSS_BORDER_CORNER_RADIUS _gtk_css_border_corner_radius_get_type ()
#define GTK_TYPE_CSS_BORDER_RADIUS _gtk_css_border_radius_get_type ()
#define GTK_TYPE_CSS_BORDER_IMAGE_REPEAT _gtk_css_border_image_repeat_get_type ()
GType _gtk_css_background_repeat_get_type (void);
GType _gtk_css_border_corner_radius_get_type (void);
GType _gtk_css_border_radius_get_type (void);
GType _gtk_css_border_image_repeat_get_type (void);

1
gtk/gtkstylecontext.h
View File

@ -148,7 +148,6 @@ struct _GtkStyleContextClass
*/
#define GTK_STYLE_PROPERTY_BACKGROUND_IMAGE "background-image"
/* Predefined set of CSS classes */
/**

56
gtk/gtkstyleproperty.c
View File

@ -1126,6 +1126,53 @@ shadow_value_print (const GValue *value,
_gtk_shadow_print (shadow, string);
}
static gboolean
background_repeat_value_parse (GtkCssParser *parser,
GFile *file,
GValue *value)
{
GtkCssBackgroundRepeat repeat;
GtkCssBackgroundRepeatStyle style;
if (_gtk_css_parser_try (parser, "repeat", TRUE))
style = GTK_CSS_BACKGROUND_REPEAT_STYLE_REPEAT;
else if (_gtk_css_parser_try (parser, "no-repeat", TRUE))
style = GTK_CSS_BACKGROUND_REPEAT_STYLE_NO_REPEAT;
else
style = GTK_CSS_BACKGROUND_REPEAT_STYLE_NONE;
repeat.repeat = style;
g_value_set_boxed (value, &repeat);
return TRUE;
}
static const gchar *
background_repeat_style_to_string (GtkCssBackgroundRepeatStyle repeat)
{
switch (repeat)
{
case GTK_CSS_BACKGROUND_REPEAT_STYLE_REPEAT:
return "repeat";
case GTK_CSS_BACKGROUND_REPEAT_STYLE_NO_REPEAT:
return "no-repeat";
default:
return NULL;
}
}
static void
background_repeat_value_print (const GValue *value,
GString *string)
{
GtkCssBackgroundRepeat *repeat;
repeat = g_value_get_boxed (value);
g_string_append (string, background_repeat_style_to_string (repeat->repeat));
}
static gboolean
border_image_repeat_value_parse (GtkCssParser *parser,
GFile *file,
@ -2246,6 +2293,9 @@ css_string_funcs_init (void)
register_conversion_function (G_TYPE_FLAGS,
flags_value_parse,
flags_value_print);
register_conversion_function (GTK_TYPE_CSS_BACKGROUND_REPEAT,
background_repeat_value_parse,
background_repeat_value_print);
}
gboolean
@ -2912,6 +2962,12 @@ gtk_style_property_init (void)
"Background Image",
"Background Image",
CAIRO_GOBJECT_TYPE_PATTERN, 0));
gtk_style_properties_register_property (NULL,
g_param_spec_boxed ("background-repeat",
"Background repeat",
"Background repeat",
GTK_TYPE_CSS_BACKGROUND_REPEAT, 0));
gtk_style_properties_register_property (NULL,
g_param_spec_boxed ("border-image-source",
"Border image source",

31
gtk/gtkthemingengine.c
View File

@ -1381,6 +1381,7 @@ render_background_internal (GtkThemingEngine *engine,
{
GdkRGBA bg_color;
cairo_pattern_t *pattern;
GtkCssBackgroundRepeat *repeat;
GtkStateFlags flags;
gboolean running;
gdouble progress;
@ -1394,6 +1395,7 @@ render_background_internal (GtkThemingEngine *engine,
gtk_theming_engine_get (engine, flags,
"background-image", &pattern,
"background-repeat", &repeat,
"box-shadow", &box_shadow,
NULL);
@ -1602,9 +1604,31 @@ render_background_internal (GtkThemingEngine *engine,
if (pattern)
{
cairo_scale (cr, width, height);
cairo_surface_t *surface;
int scale_width, scale_height;
if (cairo_pattern_get_surface (pattern, &surface) != CAIRO_STATUS_SUCCESS)
surface = NULL;
if (surface && repeat &&
repeat->repeat != GTK_CSS_BACKGROUND_REPEAT_STYLE_NONE)
{
scale_width = cairo_image_surface_get_width (surface);
scale_height = cairo_image_surface_get_height (surface);
if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_REPEAT)
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
else if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_NO_REPEAT)
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_NONE);
}
else
{
scale_width = width;
scale_height = height;
}
cairo_scale (cr, scale_width, scale_height);
cairo_set_source (cr, pattern);
cairo_scale (cr, 1.0 / width, 1.0 / height);
cairo_scale (cr, 1.0 / scale_width, 1.0 / scale_height);
}
else
gdk_cairo_set_source_rgba (cr, &bg_color);
@ -1614,6 +1638,9 @@ render_background_internal (GtkThemingEngine *engine,
if (pattern)
cairo_pattern_destroy (pattern);
if (repeat)
g_free (repeat);
if (box_shadow != NULL)
{
_gtk_box_shadow_render (box_shadow, cr, &border_box);