Port st-theme-context.[ch] to eek-theme-context.[ch].
This commit is contained in:
Daiki Ueno
288
eek/eek-theme-context.c
Normal file
288
eek/eek-theme-context.c
Normal file
@ -0,0 +1,288 @@
|
||||
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
|
||||
/*
|
||||
* eek-theme-context.c: holds global information about a tree of styled objects
|
||||
*
|
||||
* Copyright 2009, 2010 Red Hat, Inc.
|
||||
* Copyright 2009 Florian Müllner
|
||||
*
|
||||
* This program 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 program is distributed in the hope 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 program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include "config.h"
|
||||
#endif /* HAVE_CONFIG_H */
|
||||
|
||||
#include "eek-theme.h"
|
||||
#include "eek-theme-context.h"
|
||||
|
||||
struct _EekThemeContext {
|
||||
GObject parent;
|
||||
|
||||
double resolution;
|
||||
PangoFontDescription *font;
|
||||
EekThemeNode *root_node;
|
||||
EekTheme *theme;
|
||||
};
|
||||
|
||||
struct _EekThemeContextClass {
|
||||
GObjectClass parent_class;
|
||||
};
|
||||
|
||||
#define DEFAULT_RESOLUTION 96.
|
||||
#define DEFAULT_FONT "sans-serif 10"
|
||||
|
||||
enum
|
||||
{
|
||||
CHANGED,
|
||||
|
||||
LAST_SIGNAL
|
||||
};
|
||||
|
||||
static guint signals[LAST_SIGNAL] = { 0, };
|
||||
|
||||
G_DEFINE_TYPE (EekThemeContext, eek_theme_context, G_TYPE_OBJECT)
|
||||
|
||||
static void
|
||||
eek_theme_context_finalize (GObject *object)
|
||||
{
|
||||
EekThemeContext *context = EEK_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 (eek_theme_context_parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static void
|
||||
eek_theme_context_class_init (EekThemeContextClass *klass)
|
||||
{
|
||||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||||
|
||||
object_class->finalize = eek_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
|
||||
eek_theme_context_init (EekThemeContext *context)
|
||||
{
|
||||
context->resolution = DEFAULT_RESOLUTION;
|
||||
context->font = pango_font_description_from_string (DEFAULT_FONT);
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_new:
|
||||
*
|
||||
* Create a new theme context.
|
||||
*/
|
||||
EekThemeContext *
|
||||
eek_theme_context_new (void)
|
||||
{
|
||||
EekThemeContext *context;
|
||||
|
||||
context = g_object_new (EEK_TYPE_THEME_CONTEXT, NULL);
|
||||
|
||||
return context;
|
||||
}
|
||||
|
||||
static void
|
||||
eek_theme_context_changed (EekThemeContext *context)
|
||||
{
|
||||
EekThemeNode *old_root = context->root_node;
|
||||
context->root_node = NULL;
|
||||
|
||||
g_signal_emit (context, signals[CHANGED], 0);
|
||||
|
||||
if (old_root)
|
||||
g_object_unref (old_root);
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_set_theme:
|
||||
* @context: a #EekThemeContext
|
||||
*
|
||||
* 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
|
||||
eek_theme_context_set_theme (EekThemeContext *context,
|
||||
EekTheme *theme)
|
||||
{
|
||||
g_return_if_fail (EEK_IS_THEME_CONTEXT (context));
|
||||
g_return_if_fail (theme == NULL || EEK_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);
|
||||
|
||||
eek_theme_context_changed (context);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_get_theme:
|
||||
* @context: a #EekThemeContext
|
||||
*
|
||||
* Gets the default theme for the context. See eek_theme_context_set_theme()
|
||||
*
|
||||
* Return value: (transfer none): the default theme for the context
|
||||
*/
|
||||
EekTheme *
|
||||
eek_theme_context_get_theme (EekThemeContext *context)
|
||||
{
|
||||
g_return_val_if_fail (EEK_IS_THEME_CONTEXT (context), NULL);
|
||||
|
||||
return context->theme;
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_set_resolution:
|
||||
* @context: a #EekThemeContext
|
||||
* @resolution: resolution of the context (number of pixels in an "inch")
|
||||
*
|
||||
* Sets the resolution of the theme context. This is the scale factor
|
||||
* used to convert between points and the length units pt, in, and cm.
|
||||
* This does not necessarily need to correspond to the actual number
|
||||
* resolution of the device. A value of 72. means that points and
|
||||
* pixels are identical. The default value is 96.
|
||||
*/
|
||||
void
|
||||
eek_theme_context_set_resolution (EekThemeContext *context,
|
||||
double resolution)
|
||||
{
|
||||
g_return_if_fail (EEK_IS_THEME_CONTEXT (context));
|
||||
|
||||
if (resolution == context->resolution)
|
||||
return;
|
||||
|
||||
context->resolution = resolution;
|
||||
eek_theme_context_changed (context);
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_set_default_resolution:
|
||||
* @context: a #EekThemeContext
|
||||
*
|
||||
* Sets the resolution of the theme context to the default value of 96.
|
||||
* See eek_theme_context_set_resolution().
|
||||
*/
|
||||
void
|
||||
eek_theme_context_set_default_resolution (EekThemeContext *context)
|
||||
{
|
||||
g_return_if_fail (EEK_IS_THEME_CONTEXT (context));
|
||||
|
||||
if (context->resolution == DEFAULT_RESOLUTION)
|
||||
return;
|
||||
|
||||
context->resolution = DEFAULT_RESOLUTION;
|
||||
eek_theme_context_changed (context);
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_get_resolution:
|
||||
* @context: a #EekThemeContext
|
||||
*
|
||||
* Gets the current resolution of the theme context.
|
||||
* See eek_theme_context_set_resolution().
|
||||
*
|
||||
* Return value: the resolution (in dots-per-"inch")
|
||||
*/
|
||||
double
|
||||
eek_theme_context_get_resolution (EekThemeContext *context)
|
||||
{
|
||||
g_return_val_if_fail (EEK_IS_THEME_CONTEXT (context), DEFAULT_RESOLUTION);
|
||||
|
||||
return context->resolution;
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_set_font:
|
||||
* @context: a #EekThemeContext
|
||||
* @font: the default font for theme context
|
||||
*
|
||||
* Sets the default font for the theme context. This is the font that
|
||||
* is inherited by the root node of the tree of theme nodes. If the
|
||||
* font is not overriden, then this font will be used. If the font is
|
||||
* partially modified (for example, with 'font-size: 110%', then that
|
||||
* modification is based on this font.
|
||||
*/
|
||||
void
|
||||
eek_theme_context_set_font (EekThemeContext *context,
|
||||
const PangoFontDescription *font)
|
||||
{
|
||||
g_return_if_fail (EEK_IS_THEME_CONTEXT (context));
|
||||
g_return_if_fail (font != NULL);
|
||||
|
||||
if (context->font == font ||
|
||||
pango_font_description_equal (context->font, font))
|
||||
return;
|
||||
|
||||
pango_font_description_free (context->font);
|
||||
context->font = pango_font_description_copy (font);
|
||||
eek_theme_context_changed (context);
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_get_font:
|
||||
* @context: a #EekThemeContext
|
||||
*
|
||||
* Gets the default font for the theme context. See eek_theme_context_set_font().
|
||||
*
|
||||
* Return value: the default font for the theme context.
|
||||
*/
|
||||
const PangoFontDescription *
|
||||
eek_theme_context_get_font (EekThemeContext *context)
|
||||
{
|
||||
g_return_val_if_fail (EEK_IS_THEME_CONTEXT (context), NULL);
|
||||
|
||||
return context->font;
|
||||
}
|
||||
|
||||
/**
|
||||
* eek_theme_context_get_root_node:
|
||||
* @context: a #EekThemeContext
|
||||
*
|
||||
* 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
|
||||
*/
|
||||
EekThemeNode *
|
||||
eek_theme_context_get_root_node (EekThemeContext *context)
|
||||
{
|
||||
if (context->root_node == NULL)
|
||||
context->root_node = eek_theme_node_new (context, NULL, context->theme,
|
||||
G_TYPE_NONE, NULL, NULL, NULL, NULL);
|
||||
|
||||
return context->root_node;
|
||||
}
|
||||
Reference in New Issue
Block a user