/*

* 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 3 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, see <http://www.gnu.org/licenses/>.

*

*/

#ifndef AWESOME_DRAW_H

#define AWESOME_DRAW_H

#include <cairo.h>

#include <pango/pangocairo.h>

#include <xcb/xcb.h>

#include "objects/image.h"

#include "color.h"

#include "area.h"

typedef enum

{

AlignLeft = 0,

AlignRight,

AlignCenter,

AlignTop,

AlignBottom

} alignment_t;

typedef struct

{

cairo_t *cr;

cairo_surface_t *surface;

PangoLayout *layout;

} draw_context_t;

void draw_context_init(draw_context_t *, xcb_pixmap_t, int, int);

void draw_context_wipe(draw_context_t *);

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;

PangoEllipsizeMode ellip;

PangoWrapMode wrap;

alignment_t align, valign;

} 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 *, const color_t *, area_t);

void draw_rectangle(draw_context_t *, area_t, float, bool, const color_t *);

void draw_image(draw_context_t *, area_t, alignment_t, alignment_t, image_t *);

alignment_t draw_align_fromstr(const char *, ssize_t);

const char *draw_align_tostr(alignment_t);

alignment_t draw_valign_fromstr(const char *, ssize_t);

const char *draw_valign_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);

p_clear(pdata, 1);

}

}

#endif

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