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/*
* draw.h - draw functions header
*
* Copyright © 2007-2009 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 "objects/image.h"
#include "color.h"
#include "common/array.h"
typedef enum
{
AlignLeft = (0),
AlignRight = (1),
AlignCenter = (1 << 1),
AlignTop = (1 << 2),
AlignBottom = (1 << 3),
AlignMiddle = (1 << 5)
} 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;
};
#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)
typedef struct
{
xcb_pixmap_t pixmap;
uint16_t width;
uint16_t height;
int phys_screen;
cairo_t *cr;
cairo_surface_t *surface;
PangoLayout *layout;
xcolor_t fg;
xcolor_t bg;
} draw_context_t;
void draw_context_init(draw_context_t *, int, int, int,
xcb_pixmap_t, const xcolor_t *, const xcolor_t *);
/** Wipe a draw context.
* \param ctx The draw_context_t to wipe.
*/
static inline void
draw_context_wipe(draw_context_t *ctx)
{
if(ctx->layout)
{
g_object_unref(ctx->layout);
ctx->layout = NULL;
}
if(ctx->surface)
{
cairo_surface_destroy(ctx->surface);
ctx->surface = NULL;
}
if(ctx->cr)
{
cairo_destroy(ctx->cr);
ctx->cr = NULL;
}
}
bool draw_iso2utf8(const char *, size_t, char **, ssize_t *);
/** Convert a string to UTF-8.
* \param str The string to convert.
* \param len The string length.
* \param dest The destination string that will be allocated.
* \param dlen The destination string length allocated, can be NULL.
* \return True if the conversion happened, false otherwise. In both case, dest
* and dlen will have value and dest have to be free().
*/
static inline bool
a_iso2utf8(const char *str, ssize_t len, char **dest, ssize_t *dlen)
{
if(draw_iso2utf8(str, len, dest, dlen))
return true;
*dest = a_strdup(str);
if(dlen)
*dlen = len;
return false;
}
typedef struct
{
PangoAttrList *attr_list;
char *text;
ssize_t len;
} draw_text_context_t;
bool draw_text_context_init(draw_text_context_t *, const char *, ssize_t);
void draw_text(draw_context_t *, draw_text_context_t *, PangoEllipsizeMode, PangoWrapMode, alignment_t, alignment_t, area_t);
void draw_rectangle(draw_context_t *, area_t, float, bool, const color_t *);
void draw_image(draw_context_t *, int, int, double, image_t *);
void draw_rotate(draw_context_t *, xcb_drawable_t, xcb_drawable_t, int, int, int, int, double, int, int);
area_t draw_text_extents(draw_text_context_t *);
alignment_t draw_align_fromstr(const char *, ssize_t);
const char *draw_align_tostr(alignment_t);
static inline void
draw_text_context_wipe(draw_text_context_t *pdata)
{
if(pdata)
{
if(pdata->attr_list)
pango_attr_list_unref(pdata->attr_list);
p_delete(&pdata->text);
}
}
#endif
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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