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mutter/src/ui/theme-private.h
Florian Müllner 54b2fab849 theme: Allow using custom colors from the GTK+ theme 
Add an additional color type to pick up colors defined with
@define-color in the GTK+ theme's CSS:

  gtk:custom(name,fallback)

(where "name" refers to the name defined in GTK+'s CSS, and fallback
refers to an alternative color spec which is used when the color
referenced by "name" is not found)

The main intent of the change is to allow designers to improve
Adwaita's dark theme variant without having to compromise on colors
which work in the light variant as well.

https://bugzilla.gnome.org/show_bug.cgi?id=648709
2011-07-08 22:40:43 +02:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Metacity Theme Rendering */
/*
* Copyright (C) 2001 Havoc Pennington
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef META_THEME_PRIVATE_H
#define META_THEME_PRIVATE_H
#include <meta/boxes.h>
#include <meta/gradient.h>
#include <meta/theme.h>
#include <meta/common.h>
#include <gtk/gtk.h>
/**
* MetaFrameStyle: (skip)
*
*/
typedef struct _MetaFrameStyle MetaFrameStyle;
/**
* MetaFrameStyleSet: (skip)
*
*/
typedef struct _MetaFrameStyleSet MetaFrameStyleSet;
/**
* MetaDrawOp: (skip)
*
*/
typedef struct _MetaDrawOp MetaDrawOp;
/**
* MetaDrawOpList: (skip)
*
*/
typedef struct _MetaDrawOpList MetaDrawOpList;
/**
* MetaGradientSpec: (skip)
*
*/
typedef struct _MetaGradientSpec MetaGradientSpec;
/**
* MetaAlphaGradientSpec: (skip)
*
*/
typedef struct _MetaAlphaGradientSpec MetaAlphaGradientSpec;
/**
* MetaColorSpec: (skip)
*
*/
typedef struct _MetaColorSpec MetaColorSpec;
/**
* MetaFrameLayout: (skip)
*
*/
typedef struct _MetaFrameLayout MetaFrameLayout;
/**
* MetaButtonSpace: (skip)
*
*/
typedef struct _MetaButtonSpace MetaButtonSpace;
/**
* MetaFrameGeometry: (skip)
*
*/
typedef struct _MetaFrameGeometry MetaFrameGeometry;
/**
* MetaPositionExprEnv: (skip)
*
*/
typedef struct _MetaPositionExprEnv MetaPositionExprEnv;
/**
* MetaDrawInfo: (skip)
*
*/
typedef struct _MetaDrawInfo MetaDrawInfo;
#define META_THEME_ERROR (g_quark_from_static_string ("meta-theme-error"))
typedef enum
{
META_THEME_ERROR_FRAME_GEOMETRY,
META_THEME_ERROR_BAD_CHARACTER,
META_THEME_ERROR_BAD_PARENS,
META_THEME_ERROR_UNKNOWN_VARIABLE,
META_THEME_ERROR_DIVIDE_BY_ZERO,
META_THEME_ERROR_MOD_ON_FLOAT,
META_THEME_ERROR_FAILED
} MetaThemeError;
/**
* Whether a button's size is calculated from the area around it (aspect
* sizing) or is given as a fixed height and width in pixels (fixed sizing).
*
* \bug This could be done away with; see the comment at the top of
* MetaFrameLayout.
*/
typedef enum
{
META_BUTTON_SIZING_ASPECT,
META_BUTTON_SIZING_FIXED,
META_BUTTON_SIZING_LAST
} MetaButtonSizing;
/**
* Various parameters used to calculate the geometry of a frame.
* They are used inside a MetaFrameStyle.
* This corresponds closely to the <frame_geometry> tag in a theme file.
*
* \bug button_sizing isn't really necessary, because we could easily say
* that if button_aspect is zero, the height and width are fixed values.
* This would also mean that MetaButtonSizing didn't need to exist, and
* save code.
**/
struct _MetaFrameLayout
{
/** Reference count. */
int refcount;
/** Size of left side */
int left_width;
/** Size of right side */
int right_width;
/** Size of bottom side */
int bottom_height;
/** Border of blue title region
* \bug (blue?!)
**/
GtkBorder title_border;
/** Extra height for inside of title region, above the font height */
int title_vertical_pad;
/** Right indent of buttons from edges of frame */
int right_titlebar_edge;
/** Left indent of buttons from edges of frame */
int left_titlebar_edge;
/**
* Sizing rule of buttons, either META_BUTTON_SIZING_ASPECT
* (in which case button_aspect will be honoured, and
* button_width and button_height set from it), or
* META_BUTTON_SIZING_FIXED (in which case we read the width
* and height directly).
*/
MetaButtonSizing button_sizing;
/**
* Ratio of height/width. Honoured only if
* button_sizing==META_BUTTON_SIZING_ASPECT.
* Otherwise we figure out the height from the button_border.
*/
double button_aspect;
/** Width of a button; set even when we are using aspect sizing */
int button_width;
/** Height of a button; set even when we are using aspect sizing */
int button_height;
/** Space around buttons */
GtkBorder button_border;
/** scale factor for title text */
double title_scale;
/** Whether title text will be displayed */
guint has_title : 1;
/** Whether we should hide the buttons */
guint hide_buttons : 1;
/** Radius of the top left-hand corner; 0 if not rounded */
guint top_left_corner_rounded_radius;
/** Radius of the top right-hand corner; 0 if not rounded */
guint top_right_corner_rounded_radius;
/** Radius of the bottom left-hand corner; 0 if not rounded */
guint bottom_left_corner_rounded_radius;
/** Radius of the bottom right-hand corner; 0 if not rounded */
guint bottom_right_corner_rounded_radius;
};
/**
* The computed size of a button (really just a way of tying its
* visible and clickable areas together).
* The reason for two different rectangles here is Fitts' law & maximized
* windows; see bug #97703 for more details.
*/
struct _MetaButtonSpace
{
/** The screen area where the button's image is drawn */
GdkRectangle visible;
/** The screen area where the button can be activated by clicking */
GdkRectangle clickable;
};
/**
* Calculated actual geometry of the frame
*/
struct _MetaFrameGeometry
{
int left_width;
int right_width;
int top_height;
int bottom_height;
int width;
int height;
GdkRectangle title_rect;
int left_titlebar_edge;
int right_titlebar_edge;
int top_titlebar_edge;
int bottom_titlebar_edge;
/* used for a memset hack */
#define ADDRESS_OF_BUTTON_RECTS(fgeom) (((char*)(fgeom)) + G_STRUCT_OFFSET (MetaFrameGeometry, close_rect))
#define LENGTH_OF_BUTTON_RECTS (G_STRUCT_OFFSET (MetaFrameGeometry, right_single_background) + sizeof (GdkRectangle) - G_STRUCT_OFFSET (MetaFrameGeometry, close_rect))
/* The button rects (if changed adjust memset hack) */
MetaButtonSpace close_rect;
MetaButtonSpace max_rect;
MetaButtonSpace min_rect;
MetaButtonSpace menu_rect;
MetaButtonSpace shade_rect;
MetaButtonSpace above_rect;
MetaButtonSpace stick_rect;
MetaButtonSpace unshade_rect;
MetaButtonSpace unabove_rect;
MetaButtonSpace unstick_rect;
#define MAX_MIDDLE_BACKGROUNDS (MAX_BUTTONS_PER_CORNER - 2)
GdkRectangle left_left_background;
GdkRectangle left_middle_backgrounds[MAX_MIDDLE_BACKGROUNDS];
GdkRectangle left_right_background;
GdkRectangle left_single_background;
GdkRectangle right_left_background;
GdkRectangle right_middle_backgrounds[MAX_MIDDLE_BACKGROUNDS];
GdkRectangle right_right_background;
GdkRectangle right_single_background;
/* End of button rects (if changed adjust memset hack) */
/* Saved button layout */
MetaButtonLayout button_layout;
int n_left_buttons;
int n_right_buttons;
/* Round corners */
guint top_left_corner_rounded_radius;
guint top_right_corner_rounded_radius;
guint bottom_left_corner_rounded_radius;
guint bottom_right_corner_rounded_radius;
};
typedef enum
{
META_IMAGE_FILL_SCALE, /* default, needs to be all-bits-zero for g_new0 */
META_IMAGE_FILL_TILE
} MetaImageFillType;
typedef enum
{
META_COLOR_SPEC_BASIC,
META_COLOR_SPEC_GTK,
META_COLOR_SPEC_GTK_CUSTOM,
META_COLOR_SPEC_BLEND,
META_COLOR_SPEC_SHADE
} MetaColorSpecType;
typedef enum
{
META_GTK_COLOR_FG,
META_GTK_COLOR_BG,
META_GTK_COLOR_LIGHT,
META_GTK_COLOR_DARK,
META_GTK_COLOR_MID,
META_GTK_COLOR_TEXT,
META_GTK_COLOR_BASE,
META_GTK_COLOR_TEXT_AA,
META_GTK_COLOR_LAST
} MetaGtkColorComponent;
struct _MetaColorSpec
{
MetaColorSpecType type;
union
{
struct {
GdkRGBA color;
} basic;
struct {
MetaGtkColorComponent component;
GtkStateFlags state;
} gtk;
struct {
char *color_name;
MetaColorSpec *fallback;
} gtkcustom;
struct {
MetaColorSpec *foreground;
MetaColorSpec *background;
double alpha;
GdkRGBA color;
} blend;
struct {
MetaColorSpec *base;
double factor;
GdkRGBA color;
} shade;
} data;
};
struct _MetaGradientSpec
{
MetaGradientType type;
GSList *color_specs;
};
struct _MetaAlphaGradientSpec
{
MetaGradientType type;
unsigned char *alphas;
int n_alphas;
};
struct _MetaDrawInfo
{
GdkPixbuf *mini_icon;
GdkPixbuf *icon;
PangoLayout *title_layout;
int title_layout_width;
int title_layout_height;
const MetaFrameGeometry *fgeom;
};
/**
* A drawing operation in our simple vector drawing language.
*/
typedef enum
{
/** Basic drawing-- line */
META_DRAW_LINE,
/** Basic drawing-- rectangle */
META_DRAW_RECTANGLE,
/** Basic drawing-- arc */
META_DRAW_ARC,
/** Clip to a rectangle */
META_DRAW_CLIP,
/* Texture thingies */
/** Just a filled rectangle with alpha */
META_DRAW_TINT,
META_DRAW_GRADIENT,
META_DRAW_IMAGE,
/** GTK theme engine stuff */
META_DRAW_GTK_ARROW,
META_DRAW_GTK_BOX,
META_DRAW_GTK_VLINE,
/** App's window icon */
META_DRAW_ICON,
/** App's window title */
META_DRAW_TITLE,
/** a draw op list */
META_DRAW_OP_LIST,
/** tiled draw op list */
META_DRAW_TILE
} MetaDrawType;
typedef enum
{
POS_TOKEN_INT,
POS_TOKEN_DOUBLE,
POS_TOKEN_OPERATOR,
POS_TOKEN_VARIABLE,
POS_TOKEN_OPEN_PAREN,
POS_TOKEN_CLOSE_PAREN
} PosTokenType;
typedef enum
{
POS_OP_NONE,
POS_OP_ADD,
POS_OP_SUBTRACT,
POS_OP_MULTIPLY,
POS_OP_DIVIDE,
POS_OP_MOD,
POS_OP_MAX,
POS_OP_MIN
} PosOperatorType;
/**
* A token, as output by the tokeniser.
*
* \ingroup tokenizer
*/
typedef struct
{
PosTokenType type;
union
{
struct {
int val;
} i;
struct {
double val;
} d;
struct {
PosOperatorType op;
} o;
struct {
char *name;
GQuark name_quark;
} v;
} d;
} PosToken;
/**
* MetaDrawSpec: (skip)
*
* A computed expression in our simple vector drawing language.
* While it appears to take the form of a tree, this is actually
* merely a list; concerns such as precedence of operators are
* currently recomputed on every recalculation.
*
* Created by meta_draw_spec_new(), destroyed by meta_draw_spec_free().
* pos_eval() fills this with ...FIXME. Are tokens a tree or a list?
* \ingroup parser
*/
typedef struct _MetaDrawSpec MetaDrawSpec;
struct _MetaDrawSpec
{
/**
* If this spec is constant, this is the value of the constant;
* otherwise it is zero.
*/
int value;
/** A list of tokens in the expression. */
PosToken *tokens;
/** How many tokens are in the tokens list. */
int n_tokens;
/** Does the expression contain any variables? */
gboolean constant : 1;
};
/**
* A single drawing operation in our simple vector drawing language.
*/
struct _MetaDrawOp
{
MetaDrawType type;
/* Positions are strings because they can be expressions */
union
{
struct {
MetaColorSpec *color_spec;
int dash_on_length;
int dash_off_length;
int width;
MetaDrawSpec *x1;
MetaDrawSpec *y1;
MetaDrawSpec *x2;
MetaDrawSpec *y2;
} line;
struct {
MetaColorSpec *color_spec;
gboolean filled;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
} rectangle;
struct {
MetaColorSpec *color_spec;
gboolean filled;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
double start_angle;
double extent_angle;
} arc;
struct {
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
} clip;
struct {
MetaColorSpec *color_spec;
MetaAlphaGradientSpec *alpha_spec;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
} tint;
struct {
MetaGradientSpec *gradient_spec;
MetaAlphaGradientSpec *alpha_spec;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
} gradient;
struct {
MetaColorSpec *colorize_spec;
MetaAlphaGradientSpec *alpha_spec;
GdkPixbuf *pixbuf;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
guint32 colorize_cache_pixel;
GdkPixbuf *colorize_cache_pixbuf;
MetaImageFillType fill_type;
unsigned int vertical_stripes : 1;
unsigned int horizontal_stripes : 1;
} image;
struct {
GtkStateFlags state;
GtkShadowType shadow;
GtkArrowType arrow;
gboolean filled;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
} gtk_arrow;
struct {
GtkStateFlags state;
GtkShadowType shadow;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
} gtk_box;
struct {
GtkStateFlags state;
MetaDrawSpec *x;
MetaDrawSpec *y1;
MetaDrawSpec *y2;
} gtk_vline;
struct {
MetaAlphaGradientSpec *alpha_spec;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
MetaImageFillType fill_type;
} icon;
struct {
MetaColorSpec *color_spec;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *ellipsize_width;
} title;
struct {
MetaDrawOpList *op_list;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
} op_list;
struct {
MetaDrawOpList *op_list;
MetaDrawSpec *x;
MetaDrawSpec *y;
MetaDrawSpec *width;
MetaDrawSpec *height;
MetaDrawSpec *tile_xoffset;
MetaDrawSpec *tile_yoffset;
MetaDrawSpec *tile_width;
MetaDrawSpec *tile_height;
} tile;
} data;
};
/**
* A list of MetaDrawOp objects. Maintains a reference count.
* Grows as necessary and allows the allocation of unused spaces
* to keep reallocations to a minimum.
*
* \bug Do we really win anything from not using the equivalent
* GLib structures?
*/
struct _MetaDrawOpList
{
int refcount;
MetaDrawOp **ops;
int n_ops;
int n_allocated;
};
typedef enum
{
META_BUTTON_STATE_NORMAL,
META_BUTTON_STATE_PRESSED,
META_BUTTON_STATE_PRELIGHT,
META_BUTTON_STATE_LAST
} MetaButtonState;
typedef enum
{
/* Ordered so that background is drawn first */
META_BUTTON_TYPE_LEFT_LEFT_BACKGROUND,
META_BUTTON_TYPE_LEFT_MIDDLE_BACKGROUND,
META_BUTTON_TYPE_LEFT_RIGHT_BACKGROUND,
META_BUTTON_TYPE_LEFT_SINGLE_BACKGROUND,
META_BUTTON_TYPE_RIGHT_LEFT_BACKGROUND,
META_BUTTON_TYPE_RIGHT_MIDDLE_BACKGROUND,
META_BUTTON_TYPE_RIGHT_RIGHT_BACKGROUND,
META_BUTTON_TYPE_RIGHT_SINGLE_BACKGROUND,
META_BUTTON_TYPE_CLOSE,
META_BUTTON_TYPE_MAXIMIZE,
META_BUTTON_TYPE_MINIMIZE,
META_BUTTON_TYPE_MENU,
META_BUTTON_TYPE_SHADE,
META_BUTTON_TYPE_ABOVE,
META_BUTTON_TYPE_STICK,
META_BUTTON_TYPE_UNSHADE,
META_BUTTON_TYPE_UNABOVE,
META_BUTTON_TYPE_UNSTICK,
META_BUTTON_TYPE_LAST
} MetaButtonType;
typedef enum
{
META_MENU_ICON_TYPE_CLOSE,
META_MENU_ICON_TYPE_MAXIMIZE,
META_MENU_ICON_TYPE_UNMAXIMIZE,
META_MENU_ICON_TYPE_MINIMIZE,
META_MENU_ICON_TYPE_LAST
} MetaMenuIconType;
typedef enum
{
/* Listed in the order in which the textures are drawn.
* (though this only matters for overlaps of course.)
* Buttons are drawn after the frame textures.
*
* On the corners, horizontal pieces are arbitrarily given the
* corner area:
*
* ===== |====
* | |
* | rather than |
*
*/
/* entire frame */
META_FRAME_PIECE_ENTIRE_BACKGROUND,
/* entire titlebar background */
META_FRAME_PIECE_TITLEBAR,
/* portion of the titlebar background inside the titlebar
* background edges
*/
META_FRAME_PIECE_TITLEBAR_MIDDLE,
/* left end of titlebar */
META_FRAME_PIECE_LEFT_TITLEBAR_EDGE,
/* right end of titlebar */
META_FRAME_PIECE_RIGHT_TITLEBAR_EDGE,
/* top edge of titlebar */
META_FRAME_PIECE_TOP_TITLEBAR_EDGE,
/* bottom edge of titlebar */
META_FRAME_PIECE_BOTTOM_TITLEBAR_EDGE,
/* render over title background (text area) */
META_FRAME_PIECE_TITLE,
/* left edge of the frame */
META_FRAME_PIECE_LEFT_EDGE,
/* right edge of the frame */
META_FRAME_PIECE_RIGHT_EDGE,
/* bottom edge of the frame */
META_FRAME_PIECE_BOTTOM_EDGE,
/* place over entire frame, after drawing everything else */
META_FRAME_PIECE_OVERLAY,
/* Used to get size of the enum */
META_FRAME_PIECE_LAST
} MetaFramePiece;
#define N_GTK_STATES 5
/**
* How to draw a frame in a particular state (say, a focussed, non-maximised,
* resizable frame). This corresponds closely to the <frame_style> tag
* in a theme file.
*/
struct _MetaFrameStyle
{
/** Reference count. */
int refcount;
/**
* Parent style.
* Settings which are unspecified here will be taken from there.
*/
MetaFrameStyle *parent;
/** Operations for drawing each kind of button in each state. */
MetaDrawOpList *buttons[META_BUTTON_TYPE_LAST][META_BUTTON_STATE_LAST];
/** Operations for drawing each piece of the frame. */
MetaDrawOpList *pieces[META_FRAME_PIECE_LAST];
/**
* Details such as the height and width of each edge, the corner rounding,
* and the aspect ratio of the buttons.
*/
MetaFrameLayout *layout;
/**
* Background colour of the window. Only present in theme formats
* 2 and above. Can be NULL to use the standard GTK theme engine.
*/
MetaColorSpec *window_background_color;
/**
* Transparency of the window background. 0=transparent; 255=opaque.
*/
guint8 window_background_alpha;
};
/* Kinds of frame...
*
* normal -> noresize / vert only / horz only / both
* focused / unfocused
* max -> focused / unfocused
* shaded -> focused / unfocused
* max/shaded -> focused / unfocused
*
* so 4 states with 8 sub-states in one, 2 sub-states in the other 3,
* meaning 14 total
*
* 14 window states times 7 or 8 window types. Except some
* window types never get a frame so that narrows it down a bit.
*
*/
typedef enum
{
META_FRAME_STATE_NORMAL,
META_FRAME_STATE_MAXIMIZED,
META_FRAME_STATE_TILED_LEFT,
META_FRAME_STATE_TILED_RIGHT,
META_FRAME_STATE_SHADED,
META_FRAME_STATE_MAXIMIZED_AND_SHADED,
META_FRAME_STATE_TILED_LEFT_AND_SHADED,
META_FRAME_STATE_TILED_RIGHT_AND_SHADED,
META_FRAME_STATE_LAST
} MetaFrameState;
typedef enum
{
META_FRAME_RESIZE_NONE,
META_FRAME_RESIZE_VERTICAL,
META_FRAME_RESIZE_HORIZONTAL,
META_FRAME_RESIZE_BOTH,
META_FRAME_RESIZE_LAST
} MetaFrameResize;
typedef enum
{
META_FRAME_FOCUS_NO,
META_FRAME_FOCUS_YES,
META_FRAME_FOCUS_LAST
} MetaFrameFocus;
/**
* How to draw frames at different times: when it's maximised or not, shaded
* or not, when it's focussed or not, and (for non-maximised windows), when
* it can be horizontally or vertically resized, both, or neither.
* Not all window types actually get a frame.
*
* A theme contains one of these objects for each type of window (each
* MetaFrameType), that is, normal, dialogue (modal and non-modal), etc.
*
* This corresponds closely to the <frame_style_set> tag in a theme file.
*/
struct _MetaFrameStyleSet
{
int refcount;
MetaFrameStyleSet *parent;
MetaFrameStyle *normal_styles[META_FRAME_RESIZE_LAST][META_FRAME_FOCUS_LAST];
MetaFrameStyle *maximized_styles[META_FRAME_FOCUS_LAST];
MetaFrameStyle *tiled_left_styles[META_FRAME_FOCUS_LAST];
MetaFrameStyle *tiled_right_styles[META_FRAME_FOCUS_LAST];
MetaFrameStyle *shaded_styles[META_FRAME_RESIZE_LAST][META_FRAME_FOCUS_LAST];
MetaFrameStyle *maximized_and_shaded_styles[META_FRAME_FOCUS_LAST];
MetaFrameStyle *tiled_left_and_shaded_styles[META_FRAME_FOCUS_LAST];
MetaFrameStyle *tiled_right_and_shaded_styles[META_FRAME_FOCUS_LAST];
};
/**
* A theme. This is a singleton class which groups all settings from a theme
* on disk together.
*
* \bug It is rather useless to keep the metadata fields in core, I think.
*/
struct _MetaTheme
{
/** Name of the theme (on disk), e.g. "Crux" */
char *name;
/** Path to the files associated with the theme */
char *dirname;
/**
* Filename of the XML theme file.
* \bug Kept lying around for no discernable reason.
*/
char *filename;
/** Metadata: Human-readable name of the theme. */
char *readable_name;
/** Metadata: Author of the theme. */
char *author;
/** Metadata: Copyright holder. */
char *copyright;
/** Metadata: Date of the theme. */
char *date;
/** Metadata: Description of the theme. */
char *description;
/** Version of the theme format. Older versions cannot use the features
* of newer versions even if they think they can (this is to allow forward
* and backward compatibility.
*/
guint format_version;
/** Symbol table of integer constants. */
GHashTable *integer_constants;
/** Symbol table of float constants. */
GHashTable *float_constants;
/**
* Symbol table of colour constants (hex triples, and triples
* plus alpha).
* */
GHashTable *color_constants;
GHashTable *images_by_filename;
GHashTable *layouts_by_name;
GHashTable *draw_op_lists_by_name;
GHashTable *styles_by_name;
GHashTable *style_sets_by_name;
MetaFrameStyleSet *style_sets_by_type[META_FRAME_TYPE_LAST];
GQuark quark_width;
GQuark quark_height;
GQuark quark_object_width;
GQuark quark_object_height;
GQuark quark_left_width;
GQuark quark_right_width;
GQuark quark_top_height;
GQuark quark_bottom_height;
GQuark quark_mini_icon_width;
GQuark quark_mini_icon_height;
GQuark quark_icon_width;
GQuark quark_icon_height;
GQuark quark_title_width;
GQuark quark_title_height;
GQuark quark_frame_x_center;
GQuark quark_frame_y_center;
};
struct _MetaPositionExprEnv
{
MetaRectangle rect;
/* size of an object being drawn, if it has a natural size */
int object_width;
int object_height;
/* global object sizes, always available */
int left_width;
int right_width;
int top_height;
int bottom_height;
int title_width;
int title_height;
int frame_x_center;
int frame_y_center;
int mini_icon_width;
int mini_icon_height;
int icon_width;
int icon_height;
/* Theme so we can look up constants */
MetaTheme *theme;
};
MetaFrameLayout* meta_frame_layout_new (void);
MetaFrameLayout* meta_frame_layout_copy (const MetaFrameLayout *src);
void meta_frame_layout_ref (MetaFrameLayout *layout);
void meta_frame_layout_unref (MetaFrameLayout *layout);
void meta_frame_layout_get_borders (const MetaFrameLayout *layout,
int text_height,
MetaFrameFlags flags,
int *top_height,
int *bottom_height,
int *left_width,
int *right_width);
void meta_frame_layout_calc_geometry (const MetaFrameLayout *layout,
int text_height,
MetaFrameFlags flags,
int client_width,
int client_height,
const MetaButtonLayout *button_layout,
MetaFrameGeometry *fgeom,
MetaTheme *theme);
gboolean meta_frame_layout_validate (const MetaFrameLayout *layout,
GError **error);
gboolean meta_parse_position_expression (MetaDrawSpec *spec,
const MetaPositionExprEnv *env,
int *x_return,
int *y_return,
GError **err);
gboolean meta_parse_size_expression (MetaDrawSpec *spec,
const MetaPositionExprEnv *env,
int *val_return,
GError **err);
MetaDrawSpec* meta_draw_spec_new (MetaTheme *theme,
const char *expr,
GError **error);
void meta_draw_spec_free (MetaDrawSpec *spec);
MetaColorSpec* meta_color_spec_new (MetaColorSpecType type);
MetaColorSpec* meta_color_spec_new_from_string (const char *str,
GError **err);
MetaColorSpec* meta_color_spec_new_gtk (MetaGtkColorComponent component,
GtkStateFlags state);
void meta_color_spec_free (MetaColorSpec *spec);
void meta_color_spec_render (MetaColorSpec *spec,
GtkStyleContext *style_gtk,
GdkRGBA *color);
MetaDrawOp* meta_draw_op_new (MetaDrawType type);
void meta_draw_op_free (MetaDrawOp *op);
void meta_draw_op_draw (const MetaDrawOp *op,
GtkWidget *widget,
cairo_t *cr,
const MetaDrawInfo *info,
/* logical region being drawn */
MetaRectangle logical_region);
void meta_draw_op_draw_with_style (const MetaDrawOp *op,
GtkStyleContext *style_gtk,
GtkWidget *widget,
cairo_t *cr,
const MetaDrawInfo *info,
/* logical region being drawn */
MetaRectangle logical_region);
MetaDrawOpList* meta_draw_op_list_new (int n_preallocs);
void meta_draw_op_list_ref (MetaDrawOpList *op_list);
void meta_draw_op_list_unref (MetaDrawOpList *op_list);
void meta_draw_op_list_draw (const MetaDrawOpList *op_list,
GtkWidget *widget,
cairo_t *cr,
const MetaDrawInfo *info,
MetaRectangle rect);
void meta_draw_op_list_draw_with_style (const MetaDrawOpList *op_list,
GtkStyleContext *style_gtk,
GtkWidget *widget,
cairo_t *cr,
const MetaDrawInfo *info,
MetaRectangle rect);
void meta_draw_op_list_append (MetaDrawOpList *op_list,
MetaDrawOp *op);
gboolean meta_draw_op_list_validate (MetaDrawOpList *op_list,
GError **error);
gboolean meta_draw_op_list_contains (MetaDrawOpList *op_list,
MetaDrawOpList *child);
MetaGradientSpec* meta_gradient_spec_new (MetaGradientType type);
void meta_gradient_spec_free (MetaGradientSpec *desc);
GdkPixbuf* meta_gradient_spec_render (const MetaGradientSpec *desc,
GtkStyleContext *gtk_style,
int width,
int height);
gboolean meta_gradient_spec_validate (MetaGradientSpec *spec,
GError **error);
MetaAlphaGradientSpec* meta_alpha_gradient_spec_new (MetaGradientType type,
int n_alphas);
void meta_alpha_gradient_spec_free (MetaAlphaGradientSpec *spec);
MetaFrameStyle* meta_frame_style_new (MetaFrameStyle *parent);
void meta_frame_style_ref (MetaFrameStyle *style);
void meta_frame_style_unref (MetaFrameStyle *style);
void meta_frame_style_draw (MetaFrameStyle *style,
GtkWidget *widget,
cairo_t *cr,
const MetaFrameGeometry *fgeom,
int client_width,
int client_height,
PangoLayout *title_layout,
int text_height,
MetaButtonState button_states[META_BUTTON_TYPE_LAST],
GdkPixbuf *mini_icon,
GdkPixbuf *icon);
void meta_frame_style_draw_with_style (MetaFrameStyle *style,
GtkStyleContext *style_gtk,
GtkWidget *widget,
cairo_t *cr,
const MetaFrameGeometry *fgeom,
int client_width,
int client_height,
PangoLayout *title_layout,
int text_height,
MetaButtonState button_states[META_BUTTON_TYPE_LAST],
GdkPixbuf *mini_icon,
GdkPixbuf *icon);
gboolean meta_frame_style_validate (MetaFrameStyle *style,
guint current_theme_version,
GError **error);
MetaFrameStyleSet* meta_frame_style_set_new (MetaFrameStyleSet *parent);
void meta_frame_style_set_ref (MetaFrameStyleSet *style_set);
void meta_frame_style_set_unref (MetaFrameStyleSet *style_set);
gboolean meta_frame_style_set_validate (MetaFrameStyleSet *style_set,
GError **error);
GdkPixbuf* meta_theme_load_image (MetaTheme *theme,
const char *filename,
guint size_of_theme_icons,
GError **error);
MetaFrameStyle* meta_theme_get_frame_style (MetaTheme *theme,
MetaFrameType type,
MetaFrameFlags flags);
double meta_theme_get_title_scale (MetaTheme *theme,
MetaFrameType type,
MetaFrameFlags flags);
void meta_theme_draw_frame (MetaTheme *theme,
GtkWidget *widget,
cairo_t *cr,
MetaFrameType type,
MetaFrameFlags flags,
int client_width,
int client_height,
PangoLayout *title_layout,
int text_height,
const MetaButtonLayout *button_layout,
MetaButtonState button_states[META_BUTTON_TYPE_LAST],
GdkPixbuf *mini_icon,
GdkPixbuf *icon);
void meta_theme_draw_frame_by_name (MetaTheme *theme,
GtkWidget *widget,
cairo_t *cr,
const gchar *style_name,
MetaFrameFlags flags,
int client_width,
int client_height,
PangoLayout *title_layout,
int text_height,
const MetaButtonLayout *button_layout,
MetaButtonState button_states[META_BUTTON_TYPE_LAST],
GdkPixbuf *mini_icon,
GdkPixbuf *icon);
void meta_theme_draw_frame_with_style (MetaTheme *theme,
GtkStyleContext *style_gtk,
GtkWidget *widget,
cairo_t *cr,
MetaFrameType type,
MetaFrameFlags flags,
int client_width,
int client_height,
PangoLayout *title_layout,
int text_height,
const MetaButtonLayout *button_layout,
MetaButtonState button_states[META_BUTTON_TYPE_LAST],
GdkPixbuf *mini_icon,
GdkPixbuf *icon);
void meta_theme_get_frame_borders (MetaTheme *theme,
MetaFrameType type,
int text_height,
MetaFrameFlags flags,
int *top_height,
int *bottom_height,
int *left_width,
int *right_width);
void meta_theme_calc_geometry (MetaTheme *theme,
MetaFrameType type,
int text_height,
MetaFrameFlags flags,
int client_width,
int client_height,
const MetaButtonLayout *button_layout,
MetaFrameGeometry *fgeom);
MetaFrameLayout* meta_theme_lookup_layout (MetaTheme *theme,
const char *name);
void meta_theme_insert_layout (MetaTheme *theme,
const char *name,
MetaFrameLayout *layout);
MetaDrawOpList* meta_theme_lookup_draw_op_list (MetaTheme *theme,
const char *name);
void meta_theme_insert_draw_op_list (MetaTheme *theme,
const char *name,
MetaDrawOpList *op_list);
MetaFrameStyle* meta_theme_lookup_style (MetaTheme *theme,
const char *name);
void meta_theme_insert_style (MetaTheme *theme,
const char *name,
MetaFrameStyle *style);
MetaFrameStyleSet* meta_theme_lookup_style_set (MetaTheme *theme,
const char *name);
void meta_theme_insert_style_set (MetaTheme *theme,
const char *name,
MetaFrameStyleSet *style_set);
gboolean meta_theme_define_int_constant (MetaTheme *theme,
const char *name,
int value,
GError **error);
gboolean meta_theme_lookup_int_constant (MetaTheme *theme,
const char *name,
int *value);
gboolean meta_theme_define_float_constant (MetaTheme *theme,
const char *name,
double value,
GError **error);
gboolean meta_theme_lookup_float_constant (MetaTheme *theme,
const char *name,
double *value);
gboolean meta_theme_define_color_constant (MetaTheme *theme,
const char *name,
const char *value,
GError **error);
gboolean meta_theme_lookup_color_constant (MetaTheme *theme,
const char *name,
char **value);
gboolean meta_theme_replace_constants (MetaTheme *theme,
PosToken *tokens,
int n_tokens,
GError **err);
/* random stuff */
PangoFontDescription* meta_gtk_widget_get_font_desc (GtkWidget *widget,
double scale,
const PangoFontDescription *override);
int meta_pango_font_desc_get_text_height (const PangoFontDescription *font_desc,
PangoContext *context);
/* Enum converters */
MetaGtkColorComponent meta_color_component_from_string (const char *str);
const char* meta_color_component_to_string (MetaGtkColorComponent component);
MetaButtonState meta_button_state_from_string (const char *str);
const char* meta_button_state_to_string (MetaButtonState state);
MetaButtonType meta_button_type_from_string (const char *str,
MetaTheme *theme);
const char* meta_button_type_to_string (MetaButtonType type);
MetaFramePiece meta_frame_piece_from_string (const char *str);
const char* meta_frame_piece_to_string (MetaFramePiece piece);
MetaFrameState meta_frame_state_from_string (const char *str);
const char* meta_frame_state_to_string (MetaFrameState state);
MetaFrameResize meta_frame_resize_from_string (const char *str);
const char* meta_frame_resize_to_string (MetaFrameResize resize);
MetaFrameFocus meta_frame_focus_from_string (const char *str);
const char* meta_frame_focus_to_string (MetaFrameFocus focus);
MetaFrameType meta_frame_type_from_string (const char *str);
MetaGradientType meta_gradient_type_from_string (const char *str);
const char* meta_gradient_type_to_string (MetaGradientType type);
GtkStateFlags meta_gtk_state_from_string (const char *str);
const char* meta_gtk_state_to_string (GtkStateFlags state);
GtkShadowType meta_gtk_shadow_from_string (const char *str);
const char* meta_gtk_shadow_to_string (GtkShadowType shadow);
GtkArrowType meta_gtk_arrow_from_string (const char *str);
const char* meta_gtk_arrow_to_string (GtkArrowType arrow);
MetaImageFillType meta_image_fill_type_from_string (const char *str);
const char* meta_image_fill_type_to_string (MetaImageFillType fill_type);
void meta_gtk_style_get_light_color (GtkStyleContext *style,
GtkStateFlags state,
GdkRGBA *color);
void meta_gtk_style_get_dark_color (GtkStyleContext *style,
GtkStateFlags state,
GdkRGBA *color);
guint meta_theme_earliest_version_with_button (MetaButtonType type);
#define META_THEME_ALLOWS(theme, feature) (theme->format_version >= feature)
/* What version of the theme file format were various features introduced in? */
#define META_THEME_SHADE_STICK_ABOVE_BUTTONS 2
#define META_THEME_UBIQUITOUS_CONSTANTS 2
#define META_THEME_VARIED_ROUND_CORNERS 2
#define META_THEME_IMAGES_FROM_ICON_THEMES 2
#define META_THEME_UNRESIZABLE_SHADED_STYLES 2
#define META_THEME_DEGREES_IN_ARCS 2
#define META_THEME_HIDDEN_BUTTONS 2
#define META_THEME_COLOR_CONSTANTS 2
#define META_THEME_FRAME_BACKGROUNDS 2
#endif /* META_THEME_PRIVATE_H */
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