Import stylesheet code from hippo-canvas
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
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src/st/st-theme-node.h
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125
src/st/st-theme-node.h
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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#ifndef __ST_THEME_NODE_H__
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#define __ST_THEME_NODE_H__
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#include <clutter/clutter.h>
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#include "st-theme-image.h"
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G_BEGIN_DECLS
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/**
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* SECTION:StThemeNode
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* @short_description: style information for one node in a tree of themed objects
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*
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* A #StThemeNode represents the CSS style information (the set of CSS properties) for one
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* node in a tree of themed objects. In typical usage, it represents the style information
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* for a single #ClutterActor. A #StThemeNode is immutable: attributes such as the
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* CSS classes for the node are passed in at construction. If the attributes of the node
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* or any parent node change, the node should be discarded and a new node created.
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* #StThemeNode has generic accessors to look up properties by name and specific
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* accessors for standard CSS properties that add caching and handling of various
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* details of the CSS specification. #StThemeNode also has convenience functions to help
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* in implementing a #ClutterActor with borders and padding.
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*/
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typedef struct _StTheme StTheme;
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typedef struct _StThemeContext StThemeContext;
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typedef struct _StThemeNode StThemeNode;
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typedef struct _StThemeNodeClass StThemeNodeClass;
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#define ST_TYPE_THEME_NODE (st_theme_node_get_type ())
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#define ST_THEME_NODE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), ST_TYPE_THEME_NODE, StThemeNode))
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#define ST_THEME_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ST_TYPE_THEME_NODE, StThemeNodeClass))
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#define ST_IS_THEME_NODE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), ST_TYPE_THEME_NODE))
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#define ST_IS_THEME_NODE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ST_TYPE_THEME_NODE))
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#define ST_THEME_NODE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ST_TYPE_THEME_NODE, StThemeNodeClass))
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typedef enum {
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ST_SIDE_LEFT,
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ST_SIDE_RIGHT,
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ST_SIDE_TOP,
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ST_SIDE_BOTTOM
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} StSide;
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/* These are the CSS values; that doesn't mean we have to implement blink... */
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typedef enum {
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ST_TEXT_DECORATION_UNDERLINE = 1 << 0,
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ST_TEXT_DECORATION_OVERLINE = 1 << 1,
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ST_TEXT_DECORATION_LINE_THROUGH = 1 << 2,
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ST_TEXT_DECORATION_BLINK = 1 << 3
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} StTextDecoration;
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GType st_theme_node_get_type (void) G_GNUC_CONST;
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StThemeNode *st_theme_node_new (StThemeContext *context,
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StThemeNode *parent_node, /* can be null */
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StTheme *theme, /* can be null */
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GType element_type,
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const char *element_id,
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const char *element_class,
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const char *pseudo_class);
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StThemeNode *st_theme_node_get_parent (StThemeNode *node);
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StTheme *st_theme_node_get_theme (StThemeNode *node);
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GType st_theme_node_get_element_type (StThemeNode *node);
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const char *st_theme_node_get_element_id (StThemeNode *node);
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const char *st_theme_node_get_element_class (StThemeNode *node);
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const char *st_theme_node_get_pseudo_class (StThemeNode *node);
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/* Generic getters ... these are not cached so are less efficient. The other
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* reason for adding the more specific version is that we can handle the
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* details of the actual CSS rules, which can be complicated, especially
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* for fonts
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*/
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gboolean st_theme_node_get_color (StThemeNode *node,
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const char *property_name,
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gboolean inherit,
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ClutterColor *color);
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gboolean st_theme_node_get_double (StThemeNode *node,
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const char *property_name,
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gboolean inherit,
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double *value);
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gboolean st_theme_node_get_length (StThemeNode *node,
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const char *property_name,
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gboolean inherit,
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gdouble *length);
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/* Specific getters for particular properties: cached
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*/
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void st_theme_node_get_background_color (StThemeNode *node,
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ClutterColor *color);
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void st_theme_node_get_foreground_color (StThemeNode *node,
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ClutterColor *color);
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const char *st_theme_node_get_background_image (StThemeNode *node);
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double st_theme_node_get_border_width (StThemeNode *node,
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StSide side);
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void st_theme_node_get_border_color (StThemeNode *node,
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StSide side,
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ClutterColor *color);
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double st_theme_node_get_padding (StThemeNode *node,
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StSide side);
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StTextDecoration st_theme_node_get_text_decoration (StThemeNode *node);
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/* Font rule processing is pretty complicated, so we just hardcode it
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* under the standard font/font-family/font-size/etc names. This means
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* you can't have multiple separate styled fonts for a single item,
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* but that should be OK.
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*/
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const PangoFontDescription *st_theme_node_get_font (StThemeNode *node);
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/* This is the getter for -st-background-image, which is different from
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* background-image in having provisions for unscaled borders.
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*/
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StThemeImage *st_theme_node_get_background_theme_image (StThemeNode *node);
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G_END_DECLS
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#endif /* __ST_THEME_NODE_H__ */
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