2 * draw.c - draw functions
4 * Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include <cairo-xcb.h>
34 #include "common/tokenize.h"
35 #include "common/markup.h"
37 extern awesome_t globalconf
;
39 /** Convert text from any charset to UTF-8 using iconv.
40 * \param iso The ISO string to convert.
41 * \param len The string size.
42 * \return NULL if error, otherwise pointer to the new converted string.
45 draw_iso2utf8(const char *iso
, size_t len
)
49 static iconv_t iso2utf8
= (iconv_t
) -1;
54 if(!a_strcmp(nl_langinfo(CODESET
), "UTF-8"))
57 if(iso2utf8
== (iconv_t
) -1)
59 iso2utf8
= iconv_open("UTF-8", nl_langinfo(CODESET
));
60 if(iso2utf8
== (iconv_t
) -1)
63 warn("unable to convert text from %s to UTF-8, not available",
64 nl_langinfo(CODESET
));
66 warn("unable to convert text: %s", strerror(errno
));
72 utf8len
= 2 * len
+ 1;
73 utf8
= utf8p
= p_new(char, utf8len
);
75 if(iconv(iso2utf8
, (char **) &iso
, &len
, &utf8
, &utf8len
) == (size_t) -1)
77 warn("text conversion failed: %s", strerror(errno
));
84 static xcb_visualtype_t
*
85 draw_screen_default_visual(xcb_screen_t
*s
)
87 xcb_depth_iterator_t depth_iter
;
88 xcb_visualtype_iterator_t visual_iter
;
93 for(depth_iter
= xcb_screen_allowed_depths_iterator(s
);
94 depth_iter
.rem
; xcb_depth_next (&depth_iter
))
95 for(visual_iter
= xcb_depth_visuals_iterator (depth_iter
.data
);
96 visual_iter
.rem
; xcb_visualtype_next (&visual_iter
))
97 if (s
->root_visual
== visual_iter
.data
->visual_id
)
98 return visual_iter
.data
;
103 /** Create a new Pango font
104 * \param phys_screen The physical screen number.
105 * \param fontname Pango fontname (e.g. [FAMILY-LIST] [STYLE-OPTIONS] [SIZE])
109 draw_font_new(int phys_screen
, const char *fontname
)
111 cairo_surface_t
*surface
;
112 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, phys_screen
);
115 font_t
*font
= p_new(font_t
, 1);
117 /* Create a dummy cairo surface, cairo context and pango layout in
118 * order to get font informations */
119 surface
= cairo_xcb_surface_create(globalconf
.connection
,
121 draw_screen_default_visual(s
),
123 s
->height_in_pixels
);
125 cr
= cairo_create(surface
);
126 layout
= pango_cairo_create_layout(cr
);
128 /* Get the font description used to set text on a PangoLayout */
129 font
->desc
= pango_font_description_from_string(fontname
);
130 pango_layout_set_font_description(layout
, font
->desc
);
133 pango_layout_get_pixel_size(layout
, NULL
, &font
->height
);
135 g_object_unref(layout
);
137 cairo_surface_destroy(surface
);
143 * \param font Font to delete.
146 draw_font_delete(font_t
**font
)
150 pango_font_description_free((*font
)->desc
);
156 draw_markup_on_element(markup_parser_data_t
*p
, const char *elem
,
157 const char **names
, const char **values
)
159 draw_parser_data_t
*data
= p
->priv
;
161 xcolor_init_request_t reqs
[3];
162 int8_t i
, bg_color_nbr
= -1, reqs_nbr
= -1;
164 /* hack: markup.c validates tags so we can avoid strcmps here */
167 if(elem
[1] == 'g') /* bg? */
169 if(elem
[2] == '_') /* bg_margin */
170 for(; *names
; names
++, values
++)
171 switch(a_tokenize(*names
, -1))
174 data
->bg_margin
.left
= atoi(*values
);
177 data
->bg_margin
.top
= atoi(*values
);
182 for(; *names
; names
++, values
++)
183 switch(a_tokenize(*names
, -1))
186 reqs
[++reqs_nbr
] = xcolor_init_unchecked(&data
->bg_color
,
190 bg_color_nbr
= reqs_nbr
;
194 image_delete(&data
->bg_image
);
195 data
->bg_image
= image_new_from_file(*values
);
198 data
->bg_align
= draw_align_fromstr(*values
, -1);
201 data
->bg_resize
= a_strtobool(*values
, -1);
208 for(; *names
; names
++, values
++)
209 switch(a_tokenize(*names
, -1))
212 reqs
[++reqs_nbr
] = xcolor_init_unchecked(&data
->border
.color
,
217 data
->border
.width
= atoi(*values
);
224 for(; *names
; names
++, values
++)
225 switch(a_tokenize(*names
, -1))
228 data
->align
= draw_align_fromstr(*values
, -1);
231 reqs
[++reqs_nbr
] = xcolor_init_unchecked(&data
->shadow
.color
,
235 case A_TK_SHADOW_OFFSET
:
236 data
->shadow
.offset
= atoi(*values
);
242 case 'm': /* margin */
243 for (; *names
; names
++, values
++)
244 switch(a_tokenize(*names
, -1))
247 data
->margin
.left
= atoi(*values
);
250 data
->margin
.right
= atoi(*values
);
253 data
->margin
.top
= atoi(*values
);
260 for(i
= 0; i
<= reqs_nbr
; i
++)
261 if(i
== bg_color_nbr
)
262 data
->has_bg_color
= xcolor_init_reply(reqs
[i
]);
264 xcolor_init_reply(reqs
[i
]);
268 draw_text_markup_expand(draw_parser_data_t
*data
,
269 const char *str
, ssize_t slen
)
271 static char const * const elements
[] = { "bg", "bg_margin", "text", "margin", "border", NULL
};
272 markup_parser_data_t p
=
274 .elements
= elements
,
276 .on_element
= &draw_markup_on_element
,
278 GError
*error
= NULL
;
281 markup_parser_data_init(&p
);
283 if(!markup_parse(&p
, str
, slen
))
286 if(!pango_parse_markup(p
.text
.s
, p
.text
.len
, 0, &data
->attr_list
, &data
->text
, NULL
, &error
))
288 warn("cannot parse pango markup: %s", error
? error
->message
: "unknown error");
294 data
->len
= a_strlen(data
->text
);
298 markup_parser_data_wipe(&p
);
302 /** Initialize a new draw context.
303 * \param d The draw context to initialize.
304 * \param phys_screen Physical screen id.
305 * \param width Width.
306 * \param height Height.
307 * \param px Pixmap object to store.
308 * \param fg Foreground color.
309 * \param bg Background color.
312 draw_context_init(draw_context_t
*d
, int phys_screen
,
313 int width
, int height
, xcb_pixmap_t px
,
314 const xcolor_t
*fg
, const xcolor_t
*bg
)
316 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, phys_screen
);
318 d
->phys_screen
= phys_screen
;
321 d
->depth
= s
->root_depth
;
322 d
->visual
= draw_screen_default_visual(s
);
324 d
->surface
= cairo_xcb_surface_create(globalconf
.connection
, px
, d
->visual
, width
, height
);
325 d
->cr
= cairo_create(d
->surface
);
326 d
->layout
= pango_cairo_create_layout(d
->cr
);
331 /** Draw text into a draw context.
332 * \param ctx Draw context to draw to.
333 * \param font The font to use.
334 * \param area Area to draw to.
335 * \param text Text to draw.
336 * \param len Text to draw length.
337 * \param data Optional parser data.
340 draw_text(draw_context_t
*ctx
, font_t
*font
,
341 area_t area
, const char *text
, ssize_t len
, draw_parser_data_t
*pdata
)
345 draw_parser_data_t parser_data
;
349 draw_parser_data_init(&parser_data
);
350 if(draw_text_markup_expand(&parser_data
, text
, len
))
352 text
= parser_data
.text
;
353 len
= parser_data
.len
;
355 pdata
= &parser_data
;
363 if(pdata
->has_bg_color
)
364 draw_rectangle(ctx
, area
, 1.0, true, &pdata
->bg_color
);
366 if(pdata
->border
.width
> 0)
367 draw_rectangle(ctx
, area
, pdata
->border
.width
, false, &pdata
->border
.color
);
373 switch(pdata
->bg_align
)
376 x
+= (area
.width
- pdata
->bg_image
->width
) / 2;
379 x
+= area
.width
- pdata
->bg_image
->width
;
385 x
+ pdata
->bg_margin
.left
,
386 y
+ pdata
->bg_margin
.top
,
387 pdata
->bg_resize
? area
.height
: 0, pdata
->bg_image
);
390 pango_layout_set_text(ctx
->layout
, pdata
->text
, pdata
->len
);
391 pango_layout_set_width(ctx
->layout
,
392 pango_units_from_double(area
.width
393 - (pdata
->margin
.left
394 + pdata
->margin
.right
)));
395 pango_layout_set_height(ctx
->layout
, pango_units_from_double(area
.height
));
396 pango_layout_set_ellipsize(ctx
->layout
, PANGO_ELLIPSIZE_END
);
397 pango_layout_set_wrap(ctx
->layout
, PANGO_WRAP_WORD_CHAR
);
398 pango_layout_set_attributes(ctx
->layout
, pdata
->attr_list
);
399 pango_layout_set_font_description(ctx
->layout
, font
->desc
);
400 pango_layout_get_pixel_extents(ctx
->layout
, NULL
, &ext
);
402 x
= area
.x
+ pdata
->margin
.left
;
403 /* + 1 is added for rounding, so that in any case of doubt we rather draw
404 * the text 1px lower than too high which usually results in a better type
406 y
= area
.y
+ (ctx
->height
- ext
.height
+ 1) / 2 + pdata
->margin
.top
;
411 x
+= (area
.width
- ext
.width
) / 2;
414 x
+= area
.width
- ext
.width
;
420 if(pdata
->shadow
.offset
)
422 cairo_set_source_rgba(ctx
->cr
,
423 pdata
->shadow
.color
.red
/ 65535.0,
424 pdata
->shadow
.color
.green
/ 65535.0,
425 pdata
->shadow
.color
.blue
/ 65535.0,
426 pdata
->shadow
.color
.alpha
/ 65535.0);
427 cairo_move_to(ctx
->cr
, x
+ pdata
->shadow
.offset
, y
+ pdata
->shadow
.offset
);
428 pango_cairo_layout_path(ctx
->cr
, ctx
->layout
);
429 cairo_stroke(ctx
->cr
);
432 cairo_move_to(ctx
->cr
, x
, y
);
434 cairo_set_source_rgba(ctx
->cr
,
435 ctx
->fg
.red
/ 65535.0,
436 ctx
->fg
.green
/ 65535.0,
437 ctx
->fg
.blue
/ 65535.0,
438 ctx
->fg
.alpha
/ 65535.0);
439 pango_cairo_update_layout(ctx
->cr
, ctx
->layout
);
440 pango_cairo_show_layout(ctx
->cr
, ctx
->layout
);
442 if (pdata
== &parser_data
)
443 draw_parser_data_wipe(&parser_data
);
446 /** Setup color-source for cairo (gradient or mono).
447 * \param ctx Draw context.
448 * \param gradient_vector x, y to x + x_offset, y + y_offset.
449 * \param pcolor Color to use at start of gradient_vector.
450 * \param pcolor_center Color at center of gradient_vector.
451 * \param pcolor_end Color at end of gradient_vector.
452 * \return pat Pattern or NULL, needs to get cairo_pattern_destroy()'ed.
454 static cairo_pattern_t
*
455 draw_setup_cairo_color_source(draw_context_t
*ctx
, vector_t gradient_vector
,
456 const xcolor_t
*pcolor
, const xcolor_t
*pcolor_center
,
457 const xcolor_t
*pcolor_end
)
459 cairo_pattern_t
*pat
= NULL
;
460 bool has_center
= pcolor_center
->initialized
;
461 bool has_end
= pcolor_end
->initialized
;
463 /* no need for a real pattern: */
464 if(!has_end
&& !has_center
)
465 cairo_set_source_rgba(ctx
->cr
,
466 pcolor
->red
/ 65535.0,
467 pcolor
->green
/ 65535.0,
468 pcolor
->blue
/ 65535.0,
469 pcolor
->alpha
/ 65535.0);
472 pat
= cairo_pattern_create_linear(gradient_vector
.x
,
474 gradient_vector
.x
+ gradient_vector
.x_offset
,
475 gradient_vector
.y
+ gradient_vector
.y_offset
);
477 /* pcolor is always set (so far in awesome) */
478 cairo_pattern_add_color_stop_rgba(pat
, 0.0,
479 pcolor
->red
/ 65535.0,
480 pcolor
->green
/ 65535.0,
481 pcolor
->blue
/ 65535.0,
482 pcolor
->alpha
/ 65535.0);
485 cairo_pattern_add_color_stop_rgba(pat
, 0.5,
486 pcolor_center
->red
/ 65535.0,
487 pcolor_center
->green
/ 65535.0,
488 pcolor_center
->blue
/ 65535.0,
489 pcolor_center
->alpha
/ 65535.0);
492 cairo_pattern_add_color_stop_rgba(pat
, 1.0,
493 pcolor_end
->red
/ 65535.0,
494 pcolor_end
->green
/ 65535.0,
495 pcolor_end
->blue
/ 65535.0,
496 pcolor_end
->alpha
/ 65535.0);
498 cairo_pattern_add_color_stop_rgba(pat
, 1.0,
499 pcolor
->red
/ 65535.0,
500 pcolor
->green
/ 65535.0,
501 pcolor
->blue
/ 65535.0,
502 pcolor
->alpha
/ 65535.0);
503 cairo_set_source(ctx
->cr
, pat
);
508 /** Draw rectangle inside the coordinates
509 * \param ctx Draw context
510 * \param geometry geometry
511 * \param line_width line width
512 * \param filled fill rectangle?
513 * \param color color to use
516 draw_rectangle(draw_context_t
*ctx
, area_t geometry
,
517 float line_width
, bool filled
, const xcolor_t
*color
)
519 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_NONE
);
520 cairo_set_line_width(ctx
->cr
, line_width
);
521 cairo_set_miter_limit(ctx
->cr
, 10.0);
522 cairo_set_line_join(ctx
->cr
, CAIRO_LINE_JOIN_MITER
);
523 cairo_set_source_rgba(ctx
->cr
,
524 color
->red
/ 65535.0,
525 color
->green
/ 65535.0,
526 color
->blue
/ 65535.0,
527 color
->alpha
/ 65535.0);
530 cairo_rectangle(ctx
->cr
, geometry
.x
, geometry
.y
,
531 geometry
.width
, geometry
.height
);
536 cairo_rectangle(ctx
->cr
, geometry
.x
+ line_width
/ 2.0, geometry
.y
+ line_width
/ 2.0,
537 geometry
.width
- line_width
, geometry
.height
- line_width
);
538 cairo_stroke(ctx
->cr
);
542 /** Draw rectangle with gradient colors
543 * \param ctx Draw context.
544 * \param geometry Geometry.
545 * \param line_width Line width.
546 * \param filled Filled rectangle?
547 * \param gradient_vector Color-gradient course.
548 * \param pcolor Color at start of gradient_vector.
549 * \param pcolor_center Color in the center.
550 * \param pcolor_end Color at end of gradient_vector.
553 draw_rectangle_gradient(draw_context_t
*ctx
, area_t geometry
, float line_width
, bool filled
,
554 vector_t gradient_vector
, const xcolor_t
*pcolor
,
555 const xcolor_t
*pcolor_center
, const xcolor_t
*pcolor_end
)
557 cairo_pattern_t
*pat
;
559 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_NONE
);
560 cairo_set_line_width(ctx
->cr
, line_width
);
561 cairo_set_miter_limit(ctx
->cr
, 10.0);
562 cairo_set_line_join(ctx
->cr
, CAIRO_LINE_JOIN_MITER
);
564 pat
= draw_setup_cairo_color_source(ctx
, gradient_vector
, pcolor
, pcolor_center
, pcolor_end
);
568 cairo_rectangle(ctx
->cr
, geometry
.x
, geometry
.y
, geometry
.width
, geometry
.height
);
573 cairo_rectangle(ctx
->cr
, geometry
.x
+ 1, geometry
.y
, geometry
.width
- 1, geometry
.height
- 1);
574 cairo_stroke(ctx
->cr
);
578 cairo_pattern_destroy(pat
);
581 /** Setup some cairo-things for drawing a graph
582 * \param ctx Draw context
585 draw_graph_setup(draw_context_t
*ctx
)
587 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_NONE
);
588 cairo_set_line_width(ctx
->cr
, 1.0);
589 /* without it, it can draw over the path on sharp angles
590 * ...too long lines * (...graph_line) */
591 cairo_set_miter_limit(ctx
->cr
, 0.0);
592 cairo_set_line_join(ctx
->cr
, CAIRO_LINE_JOIN_MITER
);
596 * \param ctx Draw context.
597 * \param rect The area to draw into.
598 * \param from Array of starting-point offsets to draw a graph lines.
599 * \param to Array of end-point offsets to draw a graph lines.
600 * \param cur_index Current position in data-array (cycles around).
601 * \param grow Put new values to the left or to the right.
602 * \param gradient_vector Color-Gradient course.
603 * \param pcolor Color at start of gradient_vector.
604 * \param pcolor_center Color in the center.
605 * \param pcolor_end Color at end of gradient_vector.
608 draw_graph(draw_context_t
*ctx
, area_t rect
, int *from
, int *to
, int cur_index
,
609 position_t grow
, vector_t gradient_vector
, const xcolor_t
*pcolor
,
610 const xcolor_t
*pcolor_center
, const xcolor_t
*pcolor_end
)
613 float x
= rect
.x
+ 0.5; /* middle of a pixel */
614 cairo_pattern_t
*pat
;
616 pat
= draw_setup_cairo_color_source(ctx
, gradient_vector
,
617 pcolor
, pcolor_center
, pcolor_end
);
619 if(grow
== Right
) /* draw from right to left */
622 while(++i
< rect
.width
)
624 cairo_move_to(ctx
->cr
, x
, rect
.y
- from
[cur_index
]);
625 cairo_line_to(ctx
->cr
, x
, rect
.y
- to
[cur_index
]);
629 cur_index
= rect
.width
- 1;
632 else /* draw from left to right */
633 while(++i
< rect
.width
)
635 cairo_move_to(ctx
->cr
, x
, rect
.y
- from
[cur_index
]);
636 cairo_line_to(ctx
->cr
, x
, rect
.y
- to
[cur_index
]);
640 cur_index
= rect
.width
- 1;
643 cairo_stroke(ctx
->cr
);
646 cairo_pattern_destroy(pat
);
649 /** Draw a line into a graph-widget.
650 * \param ctx Draw context.
651 * \param rect The area to draw into.
652 * \param to array of offsets to draw the line through...
653 * \param cur_index current position in data-array (cycles around)
654 * \param grow put new values to the left or to the right
655 * \param gradient_vector Color-gradient course.
656 * \param pcolor Color at start of gradient_vector.
657 * \param pcolor_center Color in the center.
658 * \param pcolor_end Color at end of gradient_vector.
661 draw_graph_line(draw_context_t
*ctx
, area_t rect
, int *to
, int cur_index
,
662 position_t grow
, vector_t gradient_vector
, const xcolor_t
*pcolor
,
663 const xcolor_t
*pcolor_center
, const xcolor_t
*pcolor_end
)
667 cairo_pattern_t
*pat
;
669 /* NOTE: without, it sometimes won't draw to some path (centered in a pixel)
670 * ... it won't fill some pixels! It also looks much nicer so.
671 * (since line-drawing is the last on the graph, no need to reset to _NONE) */
672 /* Not much difference to CAIRO_ANTIALIAS_DEFAULT, but recommend for LCD */
673 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_SUBPIXEL
);
674 /* a nicer, better visible line compared to 1.0 */
675 cairo_set_line_width(ctx
->cr
, 1.25);
677 pat
= draw_setup_cairo_color_source(ctx
, gradient_vector
, pcolor
, pcolor_center
, pcolor_end
);
679 /* path through the centers of pixels */
686 /* go through the values from old to new. Begin with the oldest. */
687 if(++cur_index
> w
- 1)
690 cairo_move_to(ctx
->cr
, x
, y
- to
[cur_index
]);
693 /* on the left border: fills a pixel also when there's only one value */
694 cairo_move_to(ctx
->cr
, x
- 1.0, y
- to
[cur_index
]);
696 for(i
= 0; i
< w
; i
++)
698 cairo_line_to(ctx
->cr
, x
, y
- to
[cur_index
]);
701 /* cycles around the index */
704 if (++cur_index
> w
- 1)
714 /* onto the right border: fills a pixel also when there's only one value */
716 cairo_line_to(ctx
->cr
, x
, y
- to
[cur_index
]);
718 cairo_stroke(ctx
->cr
);
721 cairo_pattern_destroy(pat
);
722 /* reset line-width */
723 cairo_set_line_width(ctx
->cr
, 1.0);
726 /** Draw an image from ARGB data to a draw context.
727 * Data should be stored as an array of alpha, red, blue, green for each pixel
728 * and the array size should be w * h elements long.
729 * \param ctx Draw context to draw to.
730 * \param x X coordinate.
731 * \param y Y coordinate.
734 * \param wanted_h Wanted height: if > 0, image will be resized.
735 * \param data The image pixels array.
738 draw_image_from_argb_data(draw_context_t
*ctx
, int x
, int y
, int w
, int h
,
739 int wanted_h
, unsigned char *data
)
743 cairo_surface_t
*source
;
745 source
= cairo_image_surface_create_for_data(data
, CAIRO_FORMAT_ARGB32
, w
, h
,
746 #if CAIRO_VERSION_MAJOR < 1 || (CAIRO_VERSION_MAJOR == 1 && CAIRO_VERSION_MINOR < 5) || (CAIRO_VERSION_MAJOR == 1 && CAIRO_VERSION_MINOR == 5 && CAIRO_VERSION_MICRO < 8)
747 sizeof(unsigned char) * 4 * w
);
749 cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32
, w
));
751 cr
= cairo_create(ctx
->surface
);
752 if(wanted_h
> 0 && h
> 0)
754 ratio
= (double) wanted_h
/ (double) h
;
755 cairo_scale(cr
, ratio
, ratio
);
756 cairo_set_source_surface(cr
, source
, x
/ ratio
, y
/ ratio
);
759 cairo_set_source_surface(cr
, source
, x
, y
);
764 cairo_surface_destroy(source
);
767 /** Draw an image to a draw context.
768 * \param ctx Draw context to draw to.
769 * \param x X coordinate.
770 * \param y Y coordinate.
771 * \param wanted_h Wanted height: if > 0, image will be resized.
772 * \param image The image to draw.
775 draw_image(draw_context_t
*ctx
, int x
, int y
, int wanted_h
, image_t
*image
)
777 draw_image_from_argb_data(ctx
, x
, y
, image
->width
, image
->height
, wanted_h
, image
->data
);
781 * \param ctx Draw context to draw with.
782 * \param src Drawable to draw from.
783 * \param dest Drawable to draw to.
784 * \param src_w Drawable width.
785 * \param src_h Drawable height.
786 * \param dest_w Drawable width.
787 * \param dest_h Drawable height.
788 * \param angle angle to rotate.
789 * \param tx Translate to this x coordinate.
790 * \param ty Translate to this y coordinate.
793 draw_rotate(draw_context_t
*ctx
,
794 xcb_pixmap_t src
, xcb_pixmap_t dest
,
795 int src_w
, int src_h
,
796 int dest_w
, int dest_h
,
797 double angle
, int tx
, int ty
)
799 cairo_surface_t
*surface
, *source
;
802 surface
= cairo_xcb_surface_create(globalconf
.connection
, dest
,
803 ctx
->visual
, dest_w
, dest_h
);
804 source
= cairo_xcb_surface_create(globalconf
.connection
, src
,
805 ctx
->visual
, src_w
, src_h
);
806 cr
= cairo_create (surface
);
808 cairo_translate(cr
, tx
, ty
);
809 cairo_rotate(cr
, angle
);
811 cairo_set_source_surface(cr
, source
, 0.0, 0.0);
815 cairo_surface_destroy(source
);
816 cairo_surface_destroy(surface
);
819 /** Return the width and height of a text in pixel.
820 * \param phys_screen Physical screen number.
821 * \param font Font to use.
822 * \param text The text.
823 * \param len The text length.
824 * \param pdata The parser data to fill.
825 * \return Text height and width.
828 draw_text_extents(int phys_screen
, font_t
*font
,
829 const char *text
, ssize_t len
, draw_parser_data_t
*parser_data
)
831 cairo_surface_t
*surface
;
835 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, phys_screen
);
836 area_t geom
= { 0, 0, 0, 0 };
841 if(!draw_text_markup_expand(parser_data
, text
, len
))
844 surface
= cairo_xcb_surface_create(globalconf
.connection
, phys_screen
,
845 draw_screen_default_visual(s
),
847 s
->height_in_pixels
);
849 cr
= cairo_create(surface
);
850 layout
= pango_cairo_create_layout(cr
);
851 pango_layout_set_text(layout
, parser_data
->text
, parser_data
->len
);
852 pango_layout_set_attributes(layout
, parser_data
->attr_list
);
853 pango_layout_set_font_description(layout
, font
->desc
);
854 pango_layout_get_pixel_extents(layout
, NULL
, &ext
);
855 g_object_unref(layout
);
857 cairo_surface_destroy(surface
);
859 geom
.width
= ext
.width
;
860 geom
.height
= ext
.height
* 1.5;
865 /** Transform a string to a alignment_t type.
866 * Recognized string are flex, left, center or right. Everything else will be
867 * recognized as AlignLeft.
868 * \param align Atring with align text.
869 * \param len The string length.
870 * \return An alignment_t type.
873 draw_align_fromstr(const char *align
, ssize_t len
)
875 switch (a_tokenize(align
, len
))
877 case A_TK_CENTER
: return AlignCenter
;
878 case A_TK_RIGHT
: return AlignRight
;
879 case A_TK_FLEX
: return AlignFlex
;
880 case A_TK_TOP
: return AlignTop
;
881 case A_TK_BOTTOM
: return AlignBottom
;
882 default: return AlignLeft
;
886 /** Transform an alignment to a string.
887 * \param a The alignment.
888 * \return A string which must not be freed.
891 draw_align_tostr(alignment_t a
)
895 case AlignLeft
: return "left";
896 case AlignCenter
: return "center";
897 case AlignRight
: return "right";
898 case AlignFlex
: return "flex";
899 case AlignBottom
: return "bottom";
900 case AlignTop
: return "top";
901 default: return NULL
;
905 #define RGB_COLOR_8_TO_16(i) (65535 * ((i) & 0xff) / 255)
907 /** Send a request to initialize a X color.
908 * \param color xcolor_t struct to store color into.
909 * \param colstr Color specification.
910 * \return request informations.
912 xcolor_init_request_t
913 xcolor_init_unchecked(xcolor_t
*color
, const char *colstr
, ssize_t len
)
915 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, globalconf
.default_screen
);
916 xcolor_init_request_t req
;
917 unsigned long colnum
;
918 uint16_t red
, green
, blue
;
924 req
.has_error
= true;
931 /* The color is given in RGB value */
938 colnum
= strtoul(colstr
+ 1, &p
, 16);
945 colnum
= strtoul(colstr
+ 1, &p
, 16);
948 req
.alpha
= RGB_COLOR_8_TO_16(colnum
);
954 warn("awesome: error, invalid color '%s'", colstr
);
955 req
.has_error
= true;
959 red
= RGB_COLOR_8_TO_16(colnum
>> 16);
960 green
= RGB_COLOR_8_TO_16(colnum
>> 8);
961 blue
= RGB_COLOR_8_TO_16(colnum
);
964 req
.cookie_hexa
= xcb_alloc_color_unchecked(globalconf
.connection
,
971 req
.cookie_named
= xcb_alloc_named_color_unchecked(globalconf
.connection
,
972 s
->default_colormap
, len
,
976 req
.has_error
= false;
982 /** Initialize a X color.
983 * \param req xcolor_init request.
984 * \return True if color allocation was successfull.
987 xcolor_init_reply(xcolor_init_request_t req
)
994 xcb_alloc_color_reply_t
*hexa_color
;
996 if((hexa_color
= xcb_alloc_color_reply(globalconf
.connection
,
997 req
.cookie_hexa
, NULL
)))
999 req
.color
->pixel
= hexa_color
->pixel
;
1000 req
.color
->red
= hexa_color
->red
;
1001 req
.color
->green
= hexa_color
->green
;
1002 req
.color
->blue
= hexa_color
->blue
;
1003 req
.color
->alpha
= req
.alpha
;
1004 req
.color
->initialized
= true;
1005 p_delete(&hexa_color
);
1011 xcb_alloc_named_color_reply_t
*named_color
;
1013 if((named_color
= xcb_alloc_named_color_reply(globalconf
.connection
,
1014 req
.cookie_named
, NULL
)))
1016 req
.color
->pixel
= named_color
->pixel
;
1017 req
.color
->red
= named_color
->visual_red
;
1018 req
.color
->green
= named_color
->visual_green
;
1019 req
.color
->blue
= named_color
->visual_blue
;
1020 req
.color
->alpha
= req
.alpha
;
1021 req
.color
->initialized
= true;
1022 p_delete(&named_color
);
1027 warn("awesome: error, cannot allocate color '%s'", req
.colstr
);
1031 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80