awesome/common/draw.h

198 lines
5.0 KiB
C

/*
* draw.h - draw functions header
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef AWESOME_COMMON_DRAW_H
#define AWESOME_COMMON_DRAW_H
#include <cairo.h>
#include <pango/pangocairo.h>
#include <xcb/xcb.h>
#include "common/array.h"
#include "common/list.h"
#include "common/buffer.h"
typedef struct
{
uint32_t pixel;
uint16_t red;
uint16_t green;
uint16_t blue;
uint16_t alpha;
} xcolor_t;
typedef enum
{
AlignLeft = 0,
AlignRight,
AlignCenter,
AlignFlex,
AlignAuto
} alignment_t;
typedef struct area_t area_t;
struct area_t
{
/** Co-ords of upper left corner */
int16_t x;
int16_t y;
uint16_t width;
uint16_t height;
};
DO_ARRAY(area_t, area, DO_NOTHING);
#define AREA_LEFT(a) ((a).x)
#define AREA_TOP(a) ((a).y)
#define AREA_RIGHT(a) ((a).x + (a).width)
#define AREA_BOTTOM(a) ((a).y + (a).height)
static inline bool
area_intersect_area(area_t a, area_t b)
{
return (b.x < a.x + a.width
&& b.x + b.width > a.x
&& b.y < a.y + a.height
&& b.y + b.height > a.y);
}
static inline area_t
area_get_intersect_area(area_t a, area_t b)
{
area_t g;
g.x = MAX(a.x, b.x);
g.y = MAX(a.y, b.y);
g.width = MIN(a.x + a.width, b.x + b.width) - g.x;
g.height = MIN(a.y + a.height, b.y + b.height) - g.y;
return g;
}
typedef struct
{
PangoFontDescription *desc;
int height;
} font_t;
typedef struct
{
xcb_connection_t *connection;
xcb_pixmap_t pixmap;
xcb_visualtype_t *visual;
int width;
int height;
int phys_screen;
int depth;
cairo_t *cr;
cairo_surface_t *surface;
PangoLayout *layout;
xcolor_t fg;
xcolor_t bg;
} draw_context_t;
typedef struct
{
void *data;
size_t width;
size_t height;
} draw_image_t;
draw_context_t *draw_context_new(xcb_connection_t *, int, int, int, xcb_drawable_t, xcolor_t, xcolor_t);
/** Delete a draw context
* \param ctx draw_context_t to delete
*/
static inline void
draw_context_delete(draw_context_t **ctx)
{
if(*ctx)
{
if((*ctx)->layout)
g_object_unref((*ctx)->layout);
if((*ctx)->surface)
cairo_surface_destroy((*ctx)->surface);
if((*ctx)->cr)
cairo_destroy((*ctx)->cr);
p_delete(ctx);
}
}
font_t *draw_font_new(xcb_connection_t *, int, const char *);
void draw_font_delete(font_t **);
char * draw_iso2utf8(const char *);
static inline bool
a_iso2utf8(const char *str, char **res)
{
char *utf8;
if((utf8 = draw_iso2utf8(str)))
{
*res = utf8;
return true;
}
*res = a_strdup(str);
return false;
}
typedef struct
{
xcb_connection_t *connection;
int phys_screen;
buffer_t text;
alignment_t align;
struct
{
int left, right;
} margin;
bool has_bg_color;
xcolor_t bg_color;
draw_image_t *bg_image;
struct
{
int offset;
xcolor_t color;
} shadow;
} draw_parser_data_t;
void draw_text(draw_context_t *, font_t *, area_t, const char *, draw_parser_data_t *);
void draw_rectangle(draw_context_t *, area_t, float, bool, xcolor_t);
void draw_rectangle_gradient(draw_context_t *, area_t, float, bool, area_t, xcolor_t *, xcolor_t *, xcolor_t *);
void draw_graph_setup(draw_context_t *);
void draw_graph(draw_context_t *, area_t, int *, int *, int, position_t, area_t, xcolor_t *, xcolor_t *, xcolor_t *);
void draw_graph_line(draw_context_t *, area_t, int *, int, position_t, area_t, xcolor_t *, xcolor_t *, xcolor_t *);
void draw_circle(draw_context_t *, int, int, int, bool, xcolor_t);
draw_image_t *draw_image_new(const char *);
void draw_image_delete(draw_image_t **);
void draw_image(draw_context_t *, int, int, int, draw_image_t *);
void draw_image_from_argb_data(draw_context_t *, int, int, int, int, int, unsigned char *);
void draw_rotate(draw_context_t *, xcb_drawable_t, xcb_drawable_t, int, int, int, int, double, int, int);
area_t draw_text_extents(xcb_connection_t *, int, font_t *, const char *, draw_parser_data_t *);
alignment_t draw_align_get_from_str(const char *);
bool xcolor_new(xcb_connection_t *, int, const char *, xcolor_t *);
void area_array_remove(area_array_t *, area_t);
#endif
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