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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* eel-gdk-extensions.h: Graphics routines to augment what's in gdk.
Copyright (C) 1999, 2000 Eazel, Inc.
The Mate Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Mate 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the Mate Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Authors: Darin Adler <darin@eazel.com>,
Ramiro Estrugo <ramiro@eazel.com>
*/
#ifndef EEL_GDK_EXTENSIONS_H
#define EEL_GDK_EXTENSIONS_H
#include <gdk/gdk.h>
#define EEL_RGB_COLOR_RED 0xFF0000
#define EEL_RGB_COLOR_GREEN 0x00FF00
#define EEL_RGB_COLOR_BLUE 0x0000FF
#define EEL_RGB_COLOR_WHITE 0xFFFFFF
#define EEL_RGB_COLOR_BLACK 0x000000
#define EEL_RGBA_COLOR_OPAQUE_RED 0xFFFF0000
#define EEL_RGBA_COLOR_OPAQUE_GREEN 0xFF00FF00
#define EEL_RGBA_COLOR_OPAQUE_BLUE 0xFF0000FF
#define EEL_RGBA_COLOR_OPAQUE_WHITE 0xFFFFFFFF
#define EEL_RGBA_COLOR_OPAQUE_BLACK 0xFF000000
/* Pack RGBA values into 32 bits */
#define EEL_RGBA_COLOR_PACK(r, g, b, a) \
( (((guint32)a) << 24) | \
(((guint32)r) << 16) | \
(((guint32)g) << 8) | \
(((guint32)b) << 0) )
/* Pack opaque RGBA values into 32 bits */
#define EEL_RGB_COLOR_PACK(r, g, b) \
EEL_RGBA_COLOR_PACK((r), (g), (b), 0xFF)
/* Access the individual RGBA components */
#define EEL_RGBA_COLOR_GET_R(color) (((color) >> 16) & 0xff)
#define EEL_RGBA_COLOR_GET_G(color) (((color) >> 8) & 0xff)
#define EEL_RGBA_COLOR_GET_B(color) (((color) >> 0) & 0xff)
#define EEL_RGBA_COLOR_GET_A(color) (((color) >> 24) & 0xff)
/* Bits returned by eel_gdk_parse_geometry */
typedef enum
{
EEL_GDK_NO_VALUE = 0x00,
EEL_GDK_X_VALUE = 0x01,
EEL_GDK_Y_VALUE = 0x02,
EEL_GDK_WIDTH_VALUE = 0x04,
EEL_GDK_HEIGHT_VALUE = 0x08,
EEL_GDK_ALL_VALUES = 0x0f,
EEL_GDK_X_NEGATIVE = 0x10,
EEL_GDK_Y_NEGATIVE = 0x20
} EelGdkGeometryFlags;
/* A gradient spec. is a string that contains a specifier for either a
color or a gradient. If the string has a "-" in it, then it's a gradient.
The gradient is vertical by default and the spec. can end with ":v" to indicate that.
If the gradient ends with ":h", the gradient is horizontal.
*/
char * eel_gradient_new (const char *start_color,
const char *end_color,
gboolean is_horizontal);
char * eel_gradient_parse_one_color_spec (const char *spec,
int *percent,
const char **next_spec);
gboolean eel_gradient_is_gradient (const char *gradient_spec);
char * eel_gradient_get_start_color_spec (const char *gradient_spec);
char * eel_gradient_get_end_color_spec (const char *gradient_spec);
gboolean eel_gradient_is_horizontal (const char *gradient_spec);
char * eel_gradient_set_left_color_spec (const char *gradient_spec,
const char *left_color);
char * eel_gradient_set_top_color_spec (const char *gradient_spec,
const char *top_color);
char * eel_gradient_set_right_color_spec (const char *gradient_spec,
const char *right_color);
char * eel_gradient_set_bottom_color_spec (const char *gradient_spec,
const char *bottom_color);
/* A version of parse_color that substitutes a default color instead of returning
a boolean to indicate it cannot be parsed.
*/
void eel_gdk_color_parse_with_default (const char *color_spec,
const GdkColor *default_color,
GdkColor *parsed_color);
void eel_gdk_color_parse_with_white_default (const char *color_spec,
GdkColor *parsed_color);
guint32 eel_parse_rgb_with_default (const char *color_spec,
guint32 default_rgb);
guint32 eel_parse_rgb_with_white_default (const char *color_spec);
guint32 eel_rgb_shift_color (guint32 color,
float shift_by);
guint32 eel_rgb16_to_rgb (gushort r,
gushort g,
gushort b);
guint32 eel_rgb8_to_rgb (guchar r,
guchar g,
guchar b);
guint32 eel_gdk_color_to_rgb (const GdkColor *color);
GdkColor eel_gdk_rgb_to_color (guint32 color);
char * eel_gdk_rgb_to_color_spec (guint32 color);
gboolean eel_gdk_color_is_dark (GdkColor *color);
/* A routine to get a 50% gray stippled bitmap for use in some types of highlighting. */
GdkBitmap * eel_stipple_bitmap_for_screen (GdkScreen *screen);
GdkBitmap * eel_stipple_bitmap (void);
/* Misc GdkRectangle helper functions */
gboolean eel_gdk_rectangle_contains_rectangle (GdkRectangle outer,
GdkRectangle inner);
/* A basic operation we use for drawing gradients is interpolating two colors.*/
guint32 eel_interpolate_color (gdouble ratio,
guint32 start_rgb,
guint32 end_rgb);
/* Misc GdkWindow helper functions */
void eel_gdk_window_bring_to_front (GdkWindow *window);
void eel_gdk_window_set_invisible_cursor (GdkWindow *window);
void eel_gdk_window_focus (GdkWindow *window,
guint32 timestamp);
void eel_gdk_window_set_wm_protocols (GdkWindow *window,
GdkAtom *protocols,
int nprotocols);
void eel_gdk_window_set_wm_hints_input (GdkWindow *w,
gboolean status);
/* Wrapper for XParseGeometry */
EelGdkGeometryFlags eel_gdk_parse_geometry (const char *string,
int *x_return,
int *y_return,
guint *width_return,
guint *height_return);
void eel_gdk_draw_layout_with_drop_shadow (GdkDrawable *drawable,
GdkGC *gc,
GdkColor *text_color,
GdkColor *shadow_color,
int x,
int y,
PangoLayout *layout);
#endif /* EEL_GDK_EXTENSIONS_H */
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