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gtk2/gtk/gtkcsstypesprivate.h
Georges Basile Stavracas Neto 369db4a406 css: add background-blend-mode support 
CSS supports blend modes, in which a series of layers are
merged together according to the given operation or set of
operations.

Support for blend modes landed on Cairo, which exposes all
the commons and also the exquisites blend modes available.
Adding support for blend modes, then, is just a matter of
using the available Cairo operations.

This patch adds the background-blend-mode CSS enum property,
and adapts the background rendering code to blend the backgrounds
using the available blend modes when they're set.

https://bugzilla.gnome.org/show_bug.cgi?id=768305
2016-07-03 17:24:47 -04:00

413 lines
16 KiB
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/* GTK - The GIMP Toolkit
* Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GTK_CSS_TYPES_PRIVATE_H__
#define __GTK_CSS_TYPES_PRIVATE_H__
#include <glib-object.h>
#include <gtk/gtkstylecontext.h>
G_BEGIN_DECLS
typedef union _GtkCssMatcher GtkCssMatcher;
typedef struct _GtkCssNode GtkCssNode;
typedef struct _GtkCssNodeDeclaration GtkCssNodeDeclaration;
typedef struct _GtkCssStyle GtkCssStyle;
typedef struct _GtkStyleProviderPrivate GtkStyleProviderPrivate; /* dummy typedef */
#define GTK_CSS_CHANGE_CLASS (1ULL << 0)
#define GTK_CSS_CHANGE_NAME (1ULL << 1)
#define GTK_CSS_CHANGE_ID (1ULL << 2)
#define GTK_CSS_CHANGE_FIRST_CHILD (1ULL << 3)
#define GTK_CSS_CHANGE_LAST_CHILD (1ULL << 4)
#define GTK_CSS_CHANGE_NTH_CHILD (1ULL << 5)
#define GTK_CSS_CHANGE_NTH_LAST_CHILD (1ULL << 6)
#define GTK_CSS_CHANGE_STATE (1ULL << 7)
#define GTK_CSS_CHANGE_SIBLING_CLASS (1ULL << 8)
#define GTK_CSS_CHANGE_SIBLING_NAME (1ULL << 9)
#define GTK_CSS_CHANGE_SIBLING_ID (1ULL << 10)
#define GTK_CSS_CHANGE_SIBLING_FIRST_CHILD (1ULL << 11)
#define GTK_CSS_CHANGE_SIBLING_LAST_CHILD (1ULL << 12)
#define GTK_CSS_CHANGE_SIBLING_NTH_CHILD (1ULL << 13)
#define GTK_CSS_CHANGE_SIBLING_NTH_LAST_CHILD (1ULL << 14)
#define GTK_CSS_CHANGE_SIBLING_STATE (1ULL << 15)
#define GTK_CSS_CHANGE_PARENT_CLASS (1ULL << 16)
#define GTK_CSS_CHANGE_PARENT_NAME (1ULL << 17)
#define GTK_CSS_CHANGE_PARENT_ID (1ULL << 18)
#define GTK_CSS_CHANGE_PARENT_FIRST_CHILD (1ULL << 19)
#define GTK_CSS_CHANGE_PARENT_LAST_CHILD (1ULL << 20)
#define GTK_CSS_CHANGE_PARENT_NTH_CHILD (1ULL << 21)
#define GTK_CSS_CHANGE_PARENT_NTH_LAST_CHILD (1ULL << 22)
#define GTK_CSS_CHANGE_PARENT_STATE (1ULL << 23)
#define GTK_CSS_CHANGE_PARENT_SIBLING_CLASS (1ULL << 24)
#define GTK_CSS_CHANGE_PARENT_SIBLING_ID (1ULL << 25)
#define GTK_CSS_CHANGE_PARENT_SIBLING_NAME (1ULL << 26)
#define GTK_CSS_CHANGE_PARENT_SIBLING_FIRST_CHILD (1ULL << 27)
#define GTK_CSS_CHANGE_PARENT_SIBLING_LAST_CHILD (1ULL << 28)
#define GTK_CSS_CHANGE_PARENT_SIBLING_NTH_CHILD (1ULL << 29)
#define GTK_CSS_CHANGE_PARENT_SIBLING_NTH_LAST_CHILD (1ULL << 30)
#define GTK_CSS_CHANGE_PARENT_SIBLING_STATE (1ULL << 31)
/* add more */
#define GTK_CSS_CHANGE_SOURCE (1ULL << 32)
#define GTK_CSS_CHANGE_PARENT_STYLE (1ULL << 33)
#define GTK_CSS_CHANGE_TIMESTAMP (1ULL << 34)
#define GTK_CSS_CHANGE_ANIMATIONS (1ULL << 35)
#define GTK_CSS_CHANGE_RESERVED_BIT (1ULL << 62) /* Used internally in gtkcssselector.c */
typedef guint64 GtkCssChange;
#define GTK_CSS_CHANGE_POSITION (GTK_CSS_CHANGE_FIRST_CHILD | GTK_CSS_CHANGE_LAST_CHILD | \
GTK_CSS_CHANGE_NTH_CHILD | GTK_CSS_CHANGE_NTH_LAST_CHILD)
#define GTK_CSS_CHANGE_SIBLING_POSITION (GTK_CSS_CHANGE_SIBLING_FIRST_CHILD | GTK_CSS_CHANGE_SIBLING_LAST_CHILD | \
GTK_CSS_CHANGE_SIBLING_NTH_CHILD | GTK_CSS_CHANGE_SIBLING_NTH_LAST_CHILD)
#define GTK_CSS_CHANGE_PARENT_POSITION (GTK_CSS_CHANGE_PARENT_FIRST_CHILD | GTK_CSS_CHANGE_PARENT_LAST_CHILD | \
GTK_CSS_CHANGE_PARENT_NTH_CHILD | GTK_CSS_CHANGE_PARENT_NTH_LAST_CHILD)
#define GTK_CSS_CHANGE_PARENT_SIBLING_POSITION (GTK_CSS_CHANGE_PARENT_SIBLING_FIRST_CHILD | GTK_CSS_CHANGE_PARENT_SIBLING_LAST_CHILD | \
GTK_CSS_CHANGE_PARENT_SIBLING_NTH_CHILD | GTK_CSS_CHANGE_PARENT_SIBLING_NTH_LAST_CHILD)
#define GTK_CSS_CHANGE_ANY ((1 << 19) - 1)
#define GTK_CSS_CHANGE_ANY_SELF (GTK_CSS_CHANGE_CLASS | GTK_CSS_CHANGE_NAME | GTK_CSS_CHANGE_ID | GTK_CSS_CHANGE_POSITION | GTK_CSS_CHANGE_STATE)
#define GTK_CSS_CHANGE_ANY_SIBLING (GTK_CSS_CHANGE_SIBLING_CLASS | GTK_CSS_CHANGE_SIBLING_NAME | \
GTK_CSS_CHANGE_SIBLING_ID | \
GTK_CSS_CHANGE_SIBLING_POSITION | GTK_CSS_CHANGE_SIBLING_STATE)
#define GTK_CSS_CHANGE_ANY_PARENT (GTK_CSS_CHANGE_PARENT_CLASS | GTK_CSS_CHANGE_PARENT_SIBLING_CLASS | \
GTK_CSS_CHANGE_PARENT_NAME | GTK_CSS_CHANGE_PARENT_SIBLING_NAME | \
GTK_CSS_CHANGE_PARENT_ID | GTK_CSS_CHANGE_PARENT_SIBLING_ID | \
GTK_CSS_CHANGE_PARENT_POSITION | GTK_CSS_CHANGE_PARENT_SIBLING_POSITION | \
GTK_CSS_CHANGE_PARENT_STATE | GTK_CSS_CHANGE_PARENT_SIBLING_STATE)
/*
* GtkCssAffects:
* @GTK_CSS_AFFECTS_FOREGROUND: The foreground rendering is affected.
* This does not include things that affect the font. For those,
* see @GTK_CSS_AFFECTS_FONT.
* @GTK_CSS_AFFECTS_BACKGROUND: The background rendering is affected.
* @GTK_CSS_AFFECTS_BORDER: The border styling is affected.
* @GTK_CSS_AFFECTS_PANGO_LAYOUT: Font rendering is affected.
* @GTK_CSS_AFFECTS_FONT: The font is affected and should be reloaded
* if it was cached.
* @GTK_CSS_AFFECTS_TEXT: Text rendering is affected.
* @GTK_CSS_AFFECTS_TEXT_ATTRS: Text attributes are affected.
* @GTK_CSS_AFFECTS_ICON: Fullcolor icons and their rendering is affected.
* @GTK_CSS_AFFECTS_SYMBOLIC_ICON: Symbolic icons and their rendering is affected.
* @GTK_CSS_AFFECTS_OUTLINE: The outline styling is affected. Outlines
* only affect elements that can be focused.
* @GTK_CSS_AFFECTS_CLIP: Changes in this property may have an effect
* on the clipping area of the element. Changes in these properties
* should cause a reevaluation of the element's clip area.
* @GTK_CSS_AFFECTS_SIZE: Changes in this property may have an effect
* on the allocated size of the element. Changes in these properties
* should cause a recomputation of the element's allocated size.
*
* The generic effects that a CSS property can have. If a value is
* set, then the property will have an influence on that feature.
*
* Note that multiple values can be set.
*/
typedef enum {
GTK_CSS_AFFECTS_FOREGROUND = (1 << 0),
GTK_CSS_AFFECTS_BACKGROUND = (1 << 1),
GTK_CSS_AFFECTS_BORDER = (1 << 2),
GTK_CSS_AFFECTS_FONT = (1 << 3),
GTK_CSS_AFFECTS_TEXT = (1 << 4),
GTK_CSS_AFFECTS_TEXT_ATTRS = (1 << 5),
GTK_CSS_AFFECTS_ICON = (1 << 6),
GTK_CSS_AFFECTS_SYMBOLIC_ICON = (1 << 7),
GTK_CSS_AFFECTS_OUTLINE = (1 << 8),
GTK_CSS_AFFECTS_CLIP = (1 << 9),
GTK_CSS_AFFECTS_SIZE = (1 << 10)
} GtkCssAffects;
#define GTK_CSS_AFFECTS_REDRAW (GTK_CSS_AFFECTS_FOREGROUND | \
GTK_CSS_AFFECTS_BACKGROUND | \
GTK_CSS_AFFECTS_BORDER | \
GTK_CSS_AFFECTS_ICON | \
GTK_CSS_AFFECTS_SYMBOLIC_ICON | \
GTK_CSS_AFFECTS_OUTLINE)
enum { /*< skip >*/
GTK_CSS_PROPERTY_COLOR,
GTK_CSS_PROPERTY_DPI,
GTK_CSS_PROPERTY_FONT_SIZE,
GTK_CSS_PROPERTY_ICON_THEME,
GTK_CSS_PROPERTY_ICON_PALETTE,
GTK_CSS_PROPERTY_BACKGROUND_COLOR,
GTK_CSS_PROPERTY_FONT_FAMILY,
GTK_CSS_PROPERTY_FONT_STYLE,
GTK_CSS_PROPERTY_FONT_VARIANT,
GTK_CSS_PROPERTY_FONT_WEIGHT,
GTK_CSS_PROPERTY_FONT_STRETCH,
GTK_CSS_PROPERTY_LETTER_SPACING,
GTK_CSS_PROPERTY_TEXT_DECORATION_LINE,
GTK_CSS_PROPERTY_TEXT_DECORATION_COLOR,
GTK_CSS_PROPERTY_TEXT_DECORATION_STYLE,
GTK_CSS_PROPERTY_TEXT_SHADOW,
GTK_CSS_PROPERTY_BOX_SHADOW,
GTK_CSS_PROPERTY_MARGIN_TOP,
GTK_CSS_PROPERTY_MARGIN_LEFT,
GTK_CSS_PROPERTY_MARGIN_BOTTOM,
GTK_CSS_PROPERTY_MARGIN_RIGHT,
GTK_CSS_PROPERTY_PADDING_TOP,
GTK_CSS_PROPERTY_PADDING_LEFT,
GTK_CSS_PROPERTY_PADDING_BOTTOM,
GTK_CSS_PROPERTY_PADDING_RIGHT,
GTK_CSS_PROPERTY_BORDER_TOP_STYLE,
GTK_CSS_PROPERTY_BORDER_TOP_WIDTH,
GTK_CSS_PROPERTY_BORDER_LEFT_STYLE,
GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH,
GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE,
GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH,
GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE,
GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH,
GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS,
GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS,
GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS,
GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS,
GTK_CSS_PROPERTY_OUTLINE_STYLE,
GTK_CSS_PROPERTY_OUTLINE_WIDTH,
GTK_CSS_PROPERTY_OUTLINE_OFFSET,
GTK_CSS_PROPERTY_OUTLINE_TOP_LEFT_RADIUS,
GTK_CSS_PROPERTY_OUTLINE_TOP_RIGHT_RADIUS,
GTK_CSS_PROPERTY_OUTLINE_BOTTOM_RIGHT_RADIUS,
GTK_CSS_PROPERTY_OUTLINE_BOTTOM_LEFT_RADIUS,
GTK_CSS_PROPERTY_BACKGROUND_CLIP,
GTK_CSS_PROPERTY_BACKGROUND_ORIGIN,
GTK_CSS_PROPERTY_BACKGROUND_SIZE,
GTK_CSS_PROPERTY_BACKGROUND_POSITION,
GTK_CSS_PROPERTY_BORDER_TOP_COLOR,
GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR,
GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR,
GTK_CSS_PROPERTY_BORDER_LEFT_COLOR,
GTK_CSS_PROPERTY_OUTLINE_COLOR,
GTK_CSS_PROPERTY_BACKGROUND_REPEAT,
GTK_CSS_PROPERTY_BACKGROUND_IMAGE,
GTK_CSS_PROPERTY_BACKGROUND_BLEND_MODE,
GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE,
GTK_CSS_PROPERTY_BORDER_IMAGE_REPEAT,
GTK_CSS_PROPERTY_BORDER_IMAGE_SLICE,
GTK_CSS_PROPERTY_BORDER_IMAGE_WIDTH,
GTK_CSS_PROPERTY_ICON_SOURCE,
GTK_CSS_PROPERTY_ICON_SHADOW,
GTK_CSS_PROPERTY_ICON_STYLE,
GTK_CSS_PROPERTY_ICON_TRANSFORM,
GTK_CSS_PROPERTY_MIN_WIDTH,
GTK_CSS_PROPERTY_MIN_HEIGHT,
GTK_CSS_PROPERTY_TRANSITION_PROPERTY,
GTK_CSS_PROPERTY_TRANSITION_DURATION,
GTK_CSS_PROPERTY_TRANSITION_TIMING_FUNCTION,
GTK_CSS_PROPERTY_TRANSITION_DELAY,
GTK_CSS_PROPERTY_ANIMATION_NAME,
GTK_CSS_PROPERTY_ANIMATION_DURATION,
GTK_CSS_PROPERTY_ANIMATION_TIMING_FUNCTION,
GTK_CSS_PROPERTY_ANIMATION_ITERATION_COUNT,
GTK_CSS_PROPERTY_ANIMATION_DIRECTION,
GTK_CSS_PROPERTY_ANIMATION_PLAY_STATE,
GTK_CSS_PROPERTY_ANIMATION_DELAY,
GTK_CSS_PROPERTY_ANIMATION_FILL_MODE,
GTK_CSS_PROPERTY_OPACITY,
GTK_CSS_PROPERTY_ICON_EFFECT,
GTK_CSS_PROPERTY_ENGINE,
GTK_CSS_PROPERTY_GTK_KEY_BINDINGS,
GTK_CSS_PROPERTY_CARET_COLOR,
GTK_CSS_PROPERTY_SECONDARY_CARET_COLOR,
/* add more */
GTK_CSS_PROPERTY_N_PROPERTIES
};
typedef enum /*< skip >*/ {
GTK_CSS_BLEND_MODE_COLOR,
GTK_CSS_BLEND_MODE_COLOR_BURN,
GTK_CSS_BLEND_MODE_COLOR_DODGE,
GTK_CSS_BLEND_MODE_DARKEN,
GTK_CSS_BLEND_MODE_DIFFERENCE,
GTK_CSS_BLEND_MODE_EXCLUSION,
GTK_CSS_BLEND_MODE_HARD_LIGHT,
GTK_CSS_BLEND_MODE_HUE,
GTK_CSS_BLEND_MODE_LIGHTEN,
GTK_CSS_BLEND_MODE_LUMINOSITY,
GTK_CSS_BLEND_MODE_MULTIPLY,
GTK_CSS_BLEND_MODE_NORMAL,
GTK_CSS_BLEND_MODE_OVERLAY,
GTK_CSS_BLEND_MODE_SATURATE,
GTK_CSS_BLEND_MODE_SCREEN,
GTK_CSS_BLEND_MODE_SOFT_LIGHT
} GtkCssBlendMode;
typedef enum /*< skip >*/ {
GTK_CSS_IMAGE_BUILTIN_NONE,
GTK_CSS_IMAGE_BUILTIN_CHECK,
GTK_CSS_IMAGE_BUILTIN_CHECK_INCONSISTENT,
GTK_CSS_IMAGE_BUILTIN_OPTION,
GTK_CSS_IMAGE_BUILTIN_OPTION_INCONSISTENT,
GTK_CSS_IMAGE_BUILTIN_ARROW_UP,
GTK_CSS_IMAGE_BUILTIN_ARROW_DOWN,
GTK_CSS_IMAGE_BUILTIN_ARROW_LEFT,
GTK_CSS_IMAGE_BUILTIN_ARROW_RIGHT,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_LEFT,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_LEFT,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_RIGHT,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_RIGHT,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_LEFT_EXPANDED,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_LEFT_EXPANDED,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_HORIZONTAL_RIGHT_EXPANDED,
GTK_CSS_IMAGE_BUILTIN_EXPANDER_VERTICAL_RIGHT_EXPANDED,
GTK_CSS_IMAGE_BUILTIN_GRIP_TOPLEFT,
GTK_CSS_IMAGE_BUILTIN_GRIP_TOP,
GTK_CSS_IMAGE_BUILTIN_GRIP_TOPRIGHT,
GTK_CSS_IMAGE_BUILTIN_GRIP_RIGHT,
GTK_CSS_IMAGE_BUILTIN_GRIP_BOTTOMRIGHT,
GTK_CSS_IMAGE_BUILTIN_GRIP_BOTTOM,
GTK_CSS_IMAGE_BUILTIN_GRIP_BOTTOMLEFT,
GTK_CSS_IMAGE_BUILTIN_GRIP_LEFT,
GTK_CSS_IMAGE_BUILTIN_PANE_SEPARATOR,
GTK_CSS_IMAGE_BUILTIN_HANDLE,
GTK_CSS_IMAGE_BUILTIN_SPINNER
} GtkCssImageBuiltinType;
typedef enum /*< skip >*/ {
GTK_CSS_AREA_BORDER_BOX,
GTK_CSS_AREA_PADDING_BOX,
GTK_CSS_AREA_CONTENT_BOX
} GtkCssArea;
typedef enum /*< skip >*/ {
GTK_CSS_DIRECTION_NORMAL,
GTK_CSS_DIRECTION_REVERSE,
GTK_CSS_DIRECTION_ALTERNATE,
GTK_CSS_DIRECTION_ALTERNATE_REVERSE
} GtkCssDirection;
typedef enum /*< skip >*/ {
GTK_CSS_PLAY_STATE_RUNNING,
GTK_CSS_PLAY_STATE_PAUSED
} GtkCssPlayState;
typedef enum /*< skip >*/ {
GTK_CSS_FILL_NONE,
GTK_CSS_FILL_FORWARDS,
GTK_CSS_FILL_BACKWARDS,
GTK_CSS_FILL_BOTH
} GtkCssFillMode;
typedef enum /*< skip >*/ {
GTK_CSS_ICON_EFFECT_NONE,
GTK_CSS_ICON_EFFECT_HIGHLIGHT,
GTK_CSS_ICON_EFFECT_DIM
} GtkCssIconEffect;
typedef enum /*< skip >*/ {
GTK_CSS_ICON_STYLE_REQUESTED,
GTK_CSS_ICON_STYLE_REGULAR,
GTK_CSS_ICON_STYLE_SYMBOLIC
} GtkCssIconStyle;
typedef enum /*< skip >*/ {
/* relative font sizes */
GTK_CSS_FONT_SIZE_SMALLER,
GTK_CSS_FONT_SIZE_LARGER,
/* absolute font sizes */
GTK_CSS_FONT_SIZE_XX_SMALL,
GTK_CSS_FONT_SIZE_X_SMALL,
GTK_CSS_FONT_SIZE_SMALL,
GTK_CSS_FONT_SIZE_MEDIUM,
GTK_CSS_FONT_SIZE_LARGE,
GTK_CSS_FONT_SIZE_X_LARGE,
GTK_CSS_FONT_SIZE_XX_LARGE
} GtkCssFontSize;
typedef enum /*< skip >*/ {
GTK_CSS_TEXT_DECORATION_LINE_NONE,
GTK_CSS_TEXT_DECORATION_LINE_UNDERLINE,
GTK_CSS_TEXT_DECORATION_LINE_LINE_THROUGH
} GtkTextDecorationLine;
typedef enum /*< skip >*/ {
GTK_CSS_TEXT_DECORATION_STYLE_SOLID,
GTK_CSS_TEXT_DECORATION_STYLE_DOUBLE,
GTK_CSS_TEXT_DECORATION_STYLE_WAVY
} GtkTextDecorationStyle;
/* for the order in arrays */
typedef enum /*< skip >*/ {
GTK_CSS_TOP,
GTK_CSS_RIGHT,
GTK_CSS_BOTTOM,
GTK_CSS_LEFT
} GtkCssSide;
typedef enum /*< skip >*/ {
GTK_CSS_TOP_LEFT,
GTK_CSS_TOP_RIGHT,
GTK_CSS_BOTTOM_RIGHT,
GTK_CSS_BOTTOM_LEFT
} GtkCssCorner;
typedef enum /*< skip >*/ {
GTK_CSS_DIMENSION_PERCENTAGE,
GTK_CSS_DIMENSION_NUMBER,
GTK_CSS_DIMENSION_LENGTH,
GTK_CSS_DIMENSION_ANGLE,
GTK_CSS_DIMENSION_TIME
} GtkCssDimension;
typedef enum /*< skip >*/ {
/* CSS term: <number> */
GTK_CSS_NUMBER,
/* CSS term: <percentage> */
GTK_CSS_PERCENT,
/* CSS term: <length> */
GTK_CSS_PX,
GTK_CSS_PT,
GTK_CSS_EM,
GTK_CSS_EX,
GTK_CSS_REM,
GTK_CSS_PC,
GTK_CSS_IN,
GTK_CSS_CM,
GTK_CSS_MM,
/* CSS term: <angle> */
GTK_CSS_RAD,
GTK_CSS_DEG,
GTK_CSS_GRAD,
GTK_CSS_TURN,
/* CSS term: <time> */
GTK_CSS_S,
GTK_CSS_MS,
} GtkCssUnit;
cairo_operator_t _gtk_css_blend_mode_get_operator (GtkCssBlendMode mode);
GtkCssChange _gtk_css_change_for_sibling (GtkCssChange match);
GtkCssChange _gtk_css_change_for_child (GtkCssChange match);
GtkCssDimension gtk_css_unit_get_dimension (GtkCssUnit unit);
char * gtk_css_change_to_string (GtkCssChange change);
void gtk_css_change_print (GtkCssChange change,
GString *string);
/* for lack of better place to put it */
/* mirror what cairo does */
#define gtk_rgba_is_clear(rgba) ((rgba)->alpha < ((double)0x00ff / (double)0xffff))
G_END_DECLS
#endif /* __GTK_CSS_TYPES_PRIVATE_H__ */
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