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Import stylesheet code from hippo-canvas

Browse Source 
Import:

  HippoCanvasTheme      => StTheme
  HippoCanvasThemeImage => StThemeImage
  HippoCanvasStyle      => StThemeNode

StThemeContext is a new class managing the theme for a stage and
global properties like resolution.

test-theme.c is a newly written test program to do verification of the
style matching and property handling rules.

Various changes are made in the import:

 - Comprehensive reindentation
 - guint32 pixels replaced with ClutterColor
 - General pseudo-class support added
 - Old-fashioned (non-bordered) background image support added, though
   with no support for repeat, etc.
 - Bug fixes for problems revealed by test program

https://bugzilla.gnome.org/show_bug.cgi?id=595990
This commit is contained in:
Owen W. Taylor 2009-09-19 20:43:49 -04:00
parent 789e268264
commit 2412a89445
15 changed files with 3747 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
.gitignore vendored
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@ -38,6 +38,7 @@ src/gnomeshell-taskpanel
src/gnome-shell
src/test-recorder
src/test-recorder.ogg
src/test-theme
stamp-h1
tests/run-test.sh
xmldocs.make

1
configure.ac
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@ -60,6 +60,7 @@ PKG_CHECK_MODULES(TIDY, clutter-1.0)
PKG_CHECK_MODULES(ST, clutter-1.0 gtk+-2.0 libccss-1 >= 0.3.1 clutter-imcontext-0.1)
PKG_CHECK_MODULES(BIG, clutter-1.0 gtk+-2.0 librsvg-2.0)
PKG_CHECK_MODULES(GDMUSER, dbus-glib-1 gtk+-2.0)
PKG_CHECK_MODULES(TOOLKIT, clutter-1.0 libcroco-0.6)
PKG_CHECK_MODULES(TRAY, gtk+-2.0)
MUTTER_BIN_DIR=`$PKG_CONFIG --variable=exec_prefix mutter-plugins`/bin

21
src/Makefile-st.am
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@ -73,7 +73,6 @@ st_source_h = \
st/st-clipboard.h \
st/st-entry.h \
st/st-label.h \
st/st-private.h \
st/st-stylable.h \
st/st-style.h \
st/st-scrollable.h \
@ -82,11 +81,19 @@ st_source_h = \
st/st-subtexture.h \
st/st-texture-cache.h \
st/st-texture-frame.h \
st/st-theme.h \
st/st-theme-context.h \
st/st-theme-image.h \
st/st-theme-node.h \
st/st-tooltip.h \
st/st-types.h \
st/st-widget.h \
$(NULL)
st_source_private_h = \
st/st-private.h \
st/st-theme-private.h
# please, keep this sorted alphabetically
st_source_c = \
st/st-adjustment.c \
@ -106,6 +113,10 @@ st_source_c = \
st/st-subtexture.c \
st/st-texture-cache.c \
st/st-texture-frame.c \
st/st-theme.c \
st/st-theme-context.c \
st/st-theme-image.c \
st/st-theme-node.c \
st/st-tooltip.c \
st/st-widget.c \
$(NULL)
@ -115,8 +126,16 @@ noinst_LTLIBRARIES += libst-1.0.la
libst_1_0_la_LIBADD = $(ST_LIBS)
libst_1_0_la_SOURCES = \
$(st_source_c) \
$(st_source_private_c) \
$(st_source_h) \
$(st_built_sources) \
$(NULL)
libst_1_0_la_CPPFLAGS = $(st_cflags)
libst_1_0_la_LDFLAGS = $(LDADD)
noinst_PROGRAMS += test-theme
test_theme_CPPFLAGS = $(st_cflags)
test_theme_LDADD = libst-1.0.la
test_theme_SOURCES = st/test-theme.c

3
src/Makefile.am
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@ -4,6 +4,7 @@ CLEANFILES =
EXTRA_DIST =
libexec_PROGRAMS =
noinst_LTLIBRARIES =
noinst_PROGRAMS =
.AUTOPARALLEL:
@ -113,7 +114,7 @@ if BUILD_RECORDER
libgnome_shell_la_SOURCES += $(shell_recorder_sources)
non_gir_sources += $(shell_recorder_non_gir_sources)
noinst_PROGRAMS = test-recorder
noinst_PROGRAMS += test-recorder
test_recorder_CPPFLAGS = $(TEST_SHELL_RECORDER_CFLAGS)
test_recorder_LDADD = $(TEST_SHELL_RECORDER_LIBS)

218
src/st/st-theme-context.c Normal file
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@ -0,0 +1,218 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include <config.h>
#include "st-theme.h"
#include "st-theme-context.h"
struct _StThemeContext {
GObject parent;
double resolution;
PangoFontDescription *font;
StThemeNode *root_node;
StTheme *theme;
};
struct _StThemeContextClass {
GObjectClass parent_class;
};
enum
{
CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0, };
G_DEFINE_TYPE (StThemeContext, st_theme_context, G_TYPE_OBJECT)
static void
st_theme_context_finalize (GObject *object)
{
StThemeContext *context = ST_THEME_CONTEXT (object);
if (context->root_node)
g_object_unref (context->root_node);
if (context->theme)
g_object_unref (context->theme);
pango_font_description_free (context->font);
G_OBJECT_CLASS (st_theme_context_parent_class)->finalize (object);
}
static void
st_theme_context_class_init (StThemeContextClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = st_theme_context_finalize;
signals[CHANGED] =
g_signal_new ("changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, /* no default handler slot */
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
st_theme_context_init (StThemeContext *context)
{
context->resolution = 96.;
context->font = pango_font_description_from_string ("sans-serif 10");
}
StThemeContext *
st_theme_context_new (void)
{
StThemeContext *context;
context = g_object_new (ST_TYPE_THEME_CONTEXT, NULL);
return context;
}
static void
on_stage_destroy (ClutterStage *stage)
{
StThemeContext *context = st_theme_context_get_for_stage (stage);
g_object_set_data (G_OBJECT (stage), "st-theme-context", NULL);
g_object_unref (context);
}
/**
* st_theme_context_get_for_stage:
* @stage: a #ClutterStage
*
* Gets a singleton theme context associated with the stage.
*
* Return value: (transfer none): the singleton theme context for the stage
*/
StThemeContext *
st_theme_context_get_for_stage (ClutterStage *stage)
{
StThemeContext *context;
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL);
context = g_object_get_data (G_OBJECT (stage), "st-theme-context");
if (context)
return context;
context = st_theme_context_new ();
g_object_set_data (G_OBJECT (stage), "st-theme-context", context);
g_signal_connect (stage, "destroy",
G_CALLBACK (on_stage_destroy), NULL);
return context;
}
/**
* st_theme_context_set_theme:
* @context: a #StThemeContext
*
* Sets the default set of theme stylesheets for the context. This theme will
* be used for the root node and for nodes descending from it, unless some other
* style is explicitely specified.
*/
void
st_theme_context_set_theme (StThemeContext *context,
StTheme *theme)
{
g_return_if_fail (ST_IS_THEME_CONTEXT (context));
g_return_if_fail (theme == NULL || ST_IS_THEME (theme));
if (context->theme != theme)
{
if (context->theme)
g_object_unref (context->theme);
context->theme = theme;
if (context->theme)
g_object_ref (context->theme);
g_signal_emit (context, signals[CHANGED], 0);
}
}
/**
* st_theme_context_get_theme:
* @context: a #StThemeContext
*
* Gets the default theme for the context. See st_theme_context_set_theme()
*
* Return value: (transfer none): the default theme for the context
*/
StTheme *
st_theme_context_get_theme (StThemeContext *context)
{
g_return_val_if_fail (ST_IS_THEME_CONTEXT (context), NULL);
return context->theme;
}
void
st_theme_context_set_resolution (StThemeContext *context,
double resolution)
{
g_return_if_fail (ST_IS_THEME_CONTEXT (context));
context->resolution = resolution;
}
double
st_theme_context_get_resolution (StThemeContext *context)
{
g_return_val_if_fail (ST_IS_THEME_CONTEXT (context), 96.);
return context->resolution;
}
void
st_theme_context_set_font (StThemeContext *context,
const PangoFontDescription *font)
{
g_return_if_fail (ST_IS_THEME_CONTEXT (context));
if (context->font == font)
return;
pango_font_description_free (context->font);
context->font = pango_font_description_copy (font);
}
const PangoFontDescription *
st_theme_context_get_font (StThemeContext *context)
{
g_return_val_if_fail (ST_IS_THEME_CONTEXT (context), NULL);
return context->font;
}
/**
* st_theme_context_get_root_node:
* @context: a #StThemeContext
*
* Gets the root node of the tree of theme style nodes that associated with this
* context. For the node tree associated with a stage, this node represents
* styles applied to the stage itself.
*
* Return value: (transfer none): the root node of the context's style tree
*/
StThemeNode *
st_theme_context_get_root_node (StThemeContext *context)
{
if (context->root_node == NULL)
context->root_node = st_theme_node_new (context, NULL, context->theme,
G_TYPE_NONE, NULL, NULL, NULL);
return context->root_node;
}

40
src/st/st-theme-context.h Normal file
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@ -0,0 +1,40 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#ifndef __ST_THEME_CONTEXT_H__
#define __ST_THEME_CONTEXT_H__
#include <clutter/clutter.h>
#include <pango/pango.h>
#include "st-theme-node.h"
G_BEGIN_DECLS
typedef struct _StThemeContextClass StThemeContextClass;
#define ST_TYPE_THEME_CONTEXT (st_theme_context_get_type ())
#define ST_THEME_CONTEXT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), ST_TYPE_THEME_CONTEXT, StThemeContext))
#define ST_THEME_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ST_TYPE_THEME_CONTEXT, StThemeContextClass))
#define ST_IS_THEME_CONTEXT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), ST_TYPE_THEME_CONTEXT))
#define ST_IS_THEME_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ST_TYPE_THEME_CONTEXT))
#define ST_THEME_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ST_TYPE_THEME_CONTEXT, StThemeContextClass))
GType st_theme_context_get_type (void) G_GNUC_CONST;
StThemeContext *st_theme_context_new (void);
StThemeContext *st_theme_context_get_for_stage (ClutterStage *stage);
void st_theme_context_set_theme (StThemeContext *context,
StTheme *theme);
StTheme * st_theme_context_get_theme (StThemeContext *context);
void st_theme_context_set_resolution (StThemeContext *context,
gdouble resolution);
double st_theme_context_get_resolution (StThemeContext *context);
void st_theme_context_set_font (StThemeContext *context,
const PangoFontDescription *font);
const PangoFontDescription *st_theme_context_get_font (StThemeContext *context);
StThemeNode * st_theme_context_get_root_node (StThemeContext *context);
G_END_DECLS
#endif /* __ST_THEME_CONTEXT_H__ */

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@ -0,0 +1,92 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include <config.h>
#include "st-theme-image.h"
struct _StThemeImage {
GObject parent;
char *filename;
int border_top;
int border_right;
int border_bottom;
int border_left;
};
struct _StThemeImageClass {
GObjectClass parent_class;
};
G_DEFINE_TYPE (StThemeImage, st_theme_image, G_TYPE_OBJECT)
static void
st_theme_image_finalize (GObject *object)
{
StThemeImage *image = ST_THEME_IMAGE (object);
g_free (image->filename);
G_OBJECT_CLASS (st_theme_image_parent_class)->finalize (object);
}
static void
st_theme_image_class_init (StThemeImageClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = st_theme_image_finalize;
}
static void
st_theme_image_init (StThemeImage *image)
{
}
StThemeImage *
st_theme_image_new (const char *filename,
int border_top,
int border_right,
int border_bottom,
int border_left)
{
StThemeImage *image;
image = g_object_new (ST_TYPE_THEME_IMAGE, NULL);
image->filename = g_strdup (filename);
image->border_top = border_top;
image->border_right = border_right;
image->border_bottom = border_bottom;
image->border_left = border_left;
return image;
}
const char *
st_theme_image_get_filename (StThemeImage *image)
{
g_return_val_if_fail (ST_IS_THEME_IMAGE (image), NULL);
return image->filename;
}
void
st_theme_image_get_borders (StThemeImage *image,
int *border_top,
int *border_right,
int *border_bottom,
int *border_left)
{
g_return_if_fail (ST_IS_THEME_IMAGE (image));
if (border_top)
*border_top = image->border_top;
if (border_right)
*border_right = image->border_right;
if (border_bottom)
*border_bottom = image->border_bottom;
if (border_left)
*border_left = image->border_left;
}

38
src/st/st-theme-image.h Normal file
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@ -0,0 +1,38 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#ifndef __ST_THEME_IMAGE_H__
#define __ST_THEME_IMAGE_H__
#include <glib-object.h>
G_BEGIN_DECLS
/* A StThemeImage encapsulates an image with specified unscaled borders on each edge.
*/
typedef struct _StThemeImage StThemeImage;
typedef struct _StThemeImageClass StThemeImageClass;
#define ST_TYPE_THEME_IMAGE (st_theme_image_get_type ())
#define ST_THEME_IMAGE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), ST_TYPE_THEME_IMAGE, StThemeImage))
#define ST_THEME_IMAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ST_TYPE_THEME_IMAGE, StThemeImageClass))
#define ST_IS_THEME_IMAGE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), ST_TYPE_THEME_IMAGE))
#define ST_IS_THEME_IMAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ST_TYPE_THEME_IMAGE))
#define ST_THEME_IMAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ST_TYPE_THEME_IMAGE, StThemeImageClass))
GType st_theme_image_get_type (void) G_GNUC_CONST;
StThemeImage *st_theme_image_new (const char *filename,
int border_top,
int border_right,
int border_bottom,
int border_left);
const char *st_theme_image_get_filename (StThemeImage *image);
void st_theme_image_get_borders (StThemeImage *image,
int *border_top,
int *border_right,
int *border_bottom,
int *border_left);
G_END_DECLS
#endif /* __ST_THEME_IMAGE_H__ */

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@ -0,0 +1,115 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#ifndef __ST_THEME_NODE_H__
#define __ST_THEME_NODE_H__
#include <clutter/clutter.h>
#include "st-theme-image.h"
G_BEGIN_DECLS
typedef struct _StTheme StTheme;
typedef struct _StThemeContext StThemeContext;
typedef struct _StThemeNode StThemeNode;
typedef struct _StThemeNodeClass StThemeNodeClass;
#define ST_TYPE_THEME_NODE (st_theme_node_get_type ())
#define ST_THEME_NODE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), ST_TYPE_THEME_NODE, StThemeNode))
#define ST_THEME_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ST_TYPE_THEME_NODE, StThemeNodeClass))
#define ST_IS_THEME_NODE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), ST_TYPE_THEME_NODE))
#define ST_IS_THEME_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ST_TYPE_THEME_NODE))
#define ST_THEME_NODE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ST_TYPE_THEME_NODE, StThemeNodeClass))
typedef enum {
ST_SIDE_LEFT,
ST_SIDE_RIGHT,
ST_SIDE_TOP,
ST_SIDE_BOTTOM
} StSide;
/* These are the CSS values; that doesn't mean we have to implement blink... */
typedef enum {
ST_TEXT_DECORATION_UNDERLINE = 1 << 0,
ST_TEXT_DECORATION_OVERLINE = 1 << 1,
ST_TEXT_DECORATION_LINE_THROUGH = 1 << 2,
ST_TEXT_DECORATION_BLINK = 1 << 3
} StTextDecoration;
GType st_theme_node_get_type (void) G_GNUC_CONST;
/* An element_type of G_TYPE_NONE means this style was created for the stage
* actor and matches a selector element name of 'stage'
*/
StThemeNode *st_theme_node_new (StThemeContext *context,
StThemeNode *parent_node, /* can be null */
StTheme *theme, /* can be null */
GType element_type,
const char *element_id,
const char *element_class,
const char *pseudo_class);
StThemeNode *st_theme_node_get_parent (StThemeNode *node);
StTheme *st_theme_node_get_theme (StThemeNode *node);
GType st_theme_node_get_element_type (StThemeNode *node);
const char *st_theme_node_get_element_id (StThemeNode *node);
const char *st_theme_node_get_element_class (StThemeNode *node);
const char *st_theme_node_get_pseudo_class (StThemeNode *node);
/* Generic getters ... these are not cached so are less efficient. The other
* reason for adding the more specific version is that we can handle the
* details of the actual CSS rules, which can be complicated, especially
* for fonts
*/
gboolean st_theme_node_get_color (StThemeNode *node,
const char *property_name,
gboolean inherit,
ClutterColor *color);
gboolean st_theme_node_get_double (StThemeNode *node,
const char *property_name,
gboolean inherit,
double *value);
/* The length here is already resolved to pixels
*/
gboolean st_theme_node_get_length (StThemeNode *node,
const char *property_name,
gboolean inherit,
gdouble *length);
/* Specific getters for particular properties: cached
*/
void st_theme_node_get_background_color (StThemeNode *node,
ClutterColor *color);
void st_theme_node_get_foreground_color (StThemeNode *node,
ClutterColor *color);
const char *st_theme_node_get_background_image (StThemeNode *node);
double st_theme_node_get_border_width (StThemeNode *node,
StSide side);
void st_theme_node_get_border_color (StThemeNode *node,
StSide side,
ClutterColor *color);
double st_theme_node_get_padding (StThemeNode *node,
StSide side);
StTextDecoration st_theme_node_get_text_decoration (StThemeNode *node);
/* Font rule processing is pretty complicated, so we just hardcode it
* under the standard font/font-family/font-size/etc names. This means
* you can't have multiple separate styled fonts for a single item,
* but that should be OK.
*/
const PangoFontDescription *st_theme_node_get_font (StThemeNode *node);
/* This is the getter for -st-background-image, which is different from
* background-image in having provisions for unscaled borders.
*/
StThemeImage *st_theme_node_get_background_theme_image (StThemeNode *node);
G_END_DECLS
#endif /* __ST_THEME_NODE_H__ */

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@ -0,0 +1,22 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#ifndef __ST_THEME_PRIVATE_H__
#define __ST_THEME_PRIVATE_H__
#include <libcroco/libcroco.h>
#include "st-theme.h"
G_BEGIN_DECLS
void _st_theme_get_matched_properties (StTheme *theme,
StThemeNode *node,
CRDeclaration ***properties,
int *n_properties);
/* Resolve an URL from the stylesheet to a filename */
char *_st_theme_resolve_url (StTheme *theme,
CRStyleSheet *base_stylesheet,
const char *url);
G_END_DECLS
#endif /* __ST_THEME_PRIVATE_H__ */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#ifndef __ST_THEME_H__
#define __ST_THEME_H__
#include <glib-object.h>
#include "st-theme-node.h"
G_BEGIN_DECLS
typedef struct _StThemeClass StThemeClass;
#define ST_TYPE_THEME (st_theme_get_type ())
#define ST_THEME(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), ST_TYPE_THEME, StTheme))
#define ST_THEME_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ST_TYPE_THEME, StThemeClass))
#define ST_IS_THEME(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), ST_TYPE_THEME))
#define ST_IS_THEME_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ST_TYPE_THEME))
#define ST_THEME_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ST_TYPE_THEME, StThemeClass))
GType st_theme_get_type (void) G_GNUC_CONST;
StTheme *st_theme_new (const char *application_stylesheet,
const char *theme_stylesheet,
const char *default_stylesheet);
G_END_DECLS
#endif /* __ST_THEME_H__ */

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include <clutter/clutter.h>
#include "st-theme.h"
#include "st-theme-context.h"
#include <math.h>
#include <string.h>
static StThemeNode *root;
static StThemeNode *group1;
static StThemeNode *text1;
static StThemeNode *text2;
static StThemeNode *group2;
static StThemeNode *text3;
static StThemeNode *text4;
static StThemeNode *group3;
static StThemeNode *cairo_texture;
static gboolean fail;
static const char *test;
static void
assert_font (StThemeNode *node,
const char *node_description,
const char *expected)
{
char *value = pango_font_description_to_string (st_theme_node_get_font (node));
if (strcmp (expected, value) != 0)
{
g_print ("%s: %s.font: expected: %s, got: %s\n",
test, node_description, expected, value);
fail = TRUE;
}
g_free (value);
}
static char *
text_decoration_to_string (StTextDecoration decoration)
{
GString *result = g_string_new (NULL);
if (decoration & ST_TEXT_DECORATION_UNDERLINE)
g_string_append(result, " underline");
if (decoration & ST_TEXT_DECORATION_OVERLINE)
g_string_append(result, " overline");
if (decoration & ST_TEXT_DECORATION_LINE_THROUGH)
g_string_append(result, " line_through");
if (decoration & ST_TEXT_DECORATION_BLINK)
g_string_append(result, " blink");
if (result->len > 0)
g_string_erase (result, 0, 1);
else
g_string_append(result, "none");
return g_string_free (result, FALSE);
}
static void
assert_text_decoration (StThemeNode *node,
const char *node_description,
StTextDecoration expected)
{
StTextDecoration value = st_theme_node_get_text_decoration (node);
if (expected != value)
{
char *es = text_decoration_to_string (expected);
char *vs = text_decoration_to_string (value);
g_print ("%s: %s.text-decoration: expected: %s, got: %s\n",
test, node_description, es, vs);
fail = TRUE;
g_free (es);
g_free (vs);
}
}
static void
assert_foreground_color (StThemeNode *node,
const char *node_description,
guint32 expected)
{
ClutterColor color;
st_theme_node_get_foreground_color (node, &color);
guint32 value = clutter_color_to_pixel (&color);
if (expected != value)
{
g_print ("%s: %s.color: expected: #%08x, got: #%08x\n",
test, node_description, expected, value);
fail = TRUE;
}
}
static void
assert_background_color (StThemeNode *node,
const char *node_description,
guint32 expected)
{
ClutterColor color;
st_theme_node_get_background_color (node, &color);
guint32 value = clutter_color_to_pixel (&color);
if (expected != value)
{
g_print ("%s: %s.background-color: expected: #%08x, got: #%08x\n",
test, node_description, expected, value);
fail = TRUE;
}
}
static void
assert_background_image (StThemeNode *node,
const char *node_description,
const char *expected)
{
const char *value = st_theme_node_get_background_image (node);
if (expected == NULL)
expected = "(null)";
if (value == NULL)
value = "(null)";
if (strcmp (expected, value) != 0)
{
g_print ("%s: %s.background-image: expected: %s, got: %s\n",
test, node_description, expected, value);
fail = TRUE;
}
}
#define LENGTH_EPSILON 0.001
static void
assert_length (const char *node_description,
const char *property_description,
double expected,
double value)
{
if (fabs (expected - value) > LENGTH_EPSILON)
{
g_print ("%s %s.%s: expected: %3f, got: %3f\n",
test, node_description, property_description, expected, value);
fail = TRUE;
}
}
static void
test_defaults (void)
{
test = "defaults";
/* font comes from context */
assert_font (root, "stage", "sans-serif 12");
/* black is the default foreground color */
assert_foreground_color (root, "stage", 0x00000ff);
}
static void
test_lengths (void)
{
test = "lengths";
/* 12pt == 16px at 96dpi */
assert_length ("group1", "padding-top", 16.,
st_theme_node_get_padding (group1, ST_SIDE_TOP));
/* 12px == 12px */
assert_length ("group1", "padding-right", 12.,
st_theme_node_get_padding (group1, ST_SIDE_RIGHT));
/* 2em == 32px (with a 12pt font) */
assert_length ("group1", "padding-bottom", 32.,
st_theme_node_get_padding (group1, ST_SIDE_BOTTOM));
/* 1in == 72pt == 96px, at 96dpi */
assert_length ("group1", "padding-left", 96.,
st_theme_node_get_padding (group1, ST_SIDE_LEFT));
}
static void
test_classes (void)
{
test = "classes";
/* .special-text class overrides size and style;
* the ClutterTexture.special-text selector doesn't match */
assert_font (text1, "text1", "sans-serif Italic 32px");
}
static void
test_type_inheritance (void)
{
test = "type_inheritance";
/* From ClutterTexture element selector */
assert_length ("cairoTexture", "padding-top", 10.,
st_theme_node_get_padding (cairo_texture, ST_SIDE_TOP));
/* From ClutterCairoTexture element selector */
assert_length ("cairoTexture", "padding-right", 20.,
st_theme_node_get_padding (cairo_texture, ST_SIDE_RIGHT));
}
static void
test_adjacent_selector (void)
{
test = "adjacent_selector";
/* #group1 > #text1 matches text1 */
assert_foreground_color (text1, "text1", 0x00ff00ff);
/* stage > #text2 doesn't match text2 */
assert_foreground_color (text2, "text2", 0x000000ff);
}
static void
test_background (void)
{
test = "background";
/* group1 has a background: shortcut property setting color and image */
assert_background_color (group1, "group1", 0xff0000ff);
assert_background_image (group1, "group1", "st/some-background.png");
/* text1 inherits the background image but not the color */
assert_background_color (text1, "text1", 0x00000000);
assert_background_image (text1, "text1", "st/some-background.png");
/* text1 inherits inherits both, but then background: none overrides both */
assert_background_color (text2, "text2", 0x00000000);
assert_background_image (text2, "text2", NULL);
/* background-image property */
assert_background_image (group2, "group2", "st/other-background.png");
}
static void
test_font (void)
{
test = "font";
/* font specified with font: */
assert_font (group2, "group2", "serif Italic 12px");
/* text3 inherits and overrides individually properties */
assert_font (text3, "text3", "serif Bold Oblique Small-Caps 24px");
}
static void
test_pseudo_class (void)
{
test = "pseudo_class";
/* text4 has :visited and :hover pseudo-classes, so should pick up both of these */
assert_foreground_color (text4, "text4", 0x888888ff);
assert_text_decoration (text4, "text4", ST_TEXT_DECORATION_UNDERLINE);
/* :hover pseudo-class matches, but class doesn't match */
assert_text_decoration (group3, "group3", 0);
}
int
main (int argc, char **argv)
{
StTheme *theme;
StThemeContext *context;
clutter_init (&argc, &argv);
theme = st_theme_new ("st/test-theme.css",
NULL, NULL);
context = st_theme_context_new ();
st_theme_context_set_theme (context, theme);
st_theme_context_set_resolution (context, 96.);
st_theme_context_set_font (context,
pango_font_description_from_string ("sans-serif 12"));
root = st_theme_context_get_root_node (context);
group1 = st_theme_node_new (context, root, NULL,
CLUTTER_TYPE_GROUP, "group1", NULL, NULL);
text1 = st_theme_node_new (context, group1, NULL,
CLUTTER_TYPE_TEXT, "text1", "special-text", NULL);
text2 = st_theme_node_new (context, group1, NULL,
CLUTTER_TYPE_TEXT, "text2", NULL, NULL);
group2 = st_theme_node_new (context, root, NULL,
CLUTTER_TYPE_GROUP, "group2", NULL, NULL);
text3 = st_theme_node_new (context, group2, NULL,
CLUTTER_TYPE_TEXT, "text3", NULL, NULL);
text4 = st_theme_node_new (context, group2, NULL,
CLUTTER_TYPE_TEXT, "text4", NULL, "visited hover");
group3 = st_theme_node_new (context, group2, NULL,
CLUTTER_TYPE_GROUP, "group3", NULL, "hover");
cairo_texture = st_theme_node_new (context, root, NULL,
CLUTTER_TYPE_CAIRO_TEXTURE, "cairoTexture", NULL, NULL);
test_defaults ();
test_lengths ();
test_classes ();
test_type_inheritance ();
test_adjacent_selector ();
test_background ();
test_font ();
test_pseudo_class ();
return fail ? 1 : 0;
}

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stage {
}
#group1 {
padding: 12pt;
padding-right: 12px;
padding-bottom: 2em;
padding-left: 1in;
background: #ff0000 url('some-background.png');
}
#text1 {
background-image: inherit;
}
.special-text {
font-size: 24pt;
font-style: italic;
}
ClutterTexture.special-text {
font-weight: bold;
}
#text2 {
background: inherit;
background: none; /* also overrides the color */
}
#group2 {
font: italic 12px serif;
}
#text3 {
font-variant: small-caps;
font-weight: bold;
font-style: oblique;
font-size: 200%;
}
ClutterTexture {
padding: 10px;
}
ClutterCairoTexture {
padding-right: 20px;
}
#group1 > #text1 {
color: #00ff00;
}
stage > #text2 {
color: #ff0000;
}
#group2 {
background-image: url('other-background.png');
}
ClutterText:hover {
text-decoration: underline;
}
ClutterText:visited {
color: #888888;
}