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>
35 #include "common/tokenize.h"
36 #include "common/markup.h"
38 extern awesome_t globalconf
;
40 /** Convert text from any charset to UTF-8 using iconv.
41 * \param iso The ISO string to convert.
42 * \param len The string size.
43 * \return NULL if error, otherwise pointer to the new converted string.
46 draw_iso2utf8(const char *iso
, size_t len
)
50 static iconv_t iso2utf8
= (iconv_t
) -1;
55 if(!a_strcmp(nl_langinfo(CODESET
), "UTF-8"))
58 if(iso2utf8
== (iconv_t
) -1)
60 iso2utf8
= iconv_open("UTF-8", nl_langinfo(CODESET
));
61 if(iso2utf8
== (iconv_t
) -1)
64 warn("unable to convert text from %s to UTF-8, not available",
65 nl_langinfo(CODESET
));
67 warn("unable to convert text: %s", strerror(errno
));
73 utf8len
= 2 * len
+ 1;
74 utf8
= utf8p
= p_new(char, utf8len
);
76 if(iconv(iso2utf8
, (char **) &iso
, &len
, &utf8
, &utf8len
) == (size_t) -1)
78 warn("text conversion failed: %s", strerror(errno
));
85 static xcb_visualtype_t
*
86 draw_screen_default_visual(xcb_screen_t
*s
)
88 xcb_depth_iterator_t depth_iter
;
89 xcb_visualtype_iterator_t visual_iter
;
94 for(depth_iter
= xcb_screen_allowed_depths_iterator(s
);
95 depth_iter
.rem
; xcb_depth_next (&depth_iter
))
96 for(visual_iter
= xcb_depth_visuals_iterator (depth_iter
.data
);
97 visual_iter
.rem
; xcb_visualtype_next (&visual_iter
))
98 if (s
->root_visual
== visual_iter
.data
->visual_id
)
99 return visual_iter
.data
;
104 /** Create a new Pango font
105 * \param phys_screen The physical screen number.
106 * \param fontname Pango fontname (e.g. [FAMILY-LIST] [STYLE-OPTIONS] [SIZE])
110 draw_font_new(int phys_screen
, const char *fontname
)
112 cairo_surface_t
*surface
;
113 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, phys_screen
);
116 font_t
*font
= p_new(font_t
, 1);
118 /* Create a dummy cairo surface, cairo context and pango layout in
119 * order to get font informations */
120 surface
= cairo_xcb_surface_create(globalconf
.connection
,
122 draw_screen_default_visual(s
),
124 s
->height_in_pixels
);
126 cr
= cairo_create(surface
);
127 layout
= pango_cairo_create_layout(cr
);
129 /* Get the font description used to set text on a PangoLayout */
130 font
->desc
= pango_font_description_from_string(fontname
);
131 pango_layout_set_font_description(layout
, font
->desc
);
134 pango_layout_get_pixel_size(layout
, NULL
, &font
->height
);
136 g_object_unref(layout
);
138 cairo_surface_destroy(surface
);
144 * \param font Font to delete.
147 draw_font_delete(font_t
**font
)
151 pango_font_description_free((*font
)->desc
);
157 draw_markup_on_element(markup_parser_data_t
*p
, const char *elem
,
158 const char **names
, const char **values
)
160 draw_parser_data_t
*data
= p
->priv
;
162 xcolor_init_request_t reqs
[3];
163 int8_t i
, bg_color_nbr
= -1, reqs_nbr
= -1;
165 /* hack: markup.c validates tags so we can avoid strcmps here */
168 if(elem
[1] == 'g') /* bg? */
170 if(elem
[2] == '_') /* bg_margin */
171 for(; *names
; names
++, values
++)
172 switch(a_tokenize(*names
, -1))
175 data
->bg_margin
.left
= atoi(*values
);
178 data
->bg_margin
.top
= atoi(*values
);
183 for(; *names
; names
++, values
++)
184 switch(a_tokenize(*names
, -1))
187 reqs
[++reqs_nbr
] = xcolor_init_unchecked(&data
->bg_color
,
191 bg_color_nbr
= reqs_nbr
;
195 image_delete(&data
->bg_image
);
196 data
->bg_image
= image_new_from_file(*values
);
199 data
->bg_align
= draw_align_fromstr(*values
, -1);
202 data
->bg_resize
= a_strtobool(*values
, -1);
209 for(; *names
; names
++, values
++)
210 switch(a_tokenize(*names
, -1))
213 reqs
[++reqs_nbr
] = xcolor_init_unchecked(&data
->border
.color
,
218 data
->border
.width
= atoi(*values
);
225 for(; *names
; names
++, values
++)
226 switch(a_tokenize(*names
, -1))
229 data
->align
= draw_align_fromstr(*values
, -1);
232 reqs
[++reqs_nbr
] = xcolor_init_unchecked(&data
->shadow
.color
,
236 case A_TK_SHADOW_OFFSET
:
237 data
->shadow
.offset
= atoi(*values
);
243 case 'm': /* margin */
244 for (; *names
; names
++, values
++)
245 switch(a_tokenize(*names
, -1))
248 data
->margin
.left
= atoi(*values
);
251 data
->margin
.right
= atoi(*values
);
254 data
->margin
.top
= atoi(*values
);
261 for(i
= 0; i
<= reqs_nbr
; i
++)
262 if(i
== bg_color_nbr
)
263 data
->has_bg_color
= xcolor_init_reply(reqs
[i
]);
265 xcolor_init_reply(reqs
[i
]);
269 draw_text_markup_expand(draw_parser_data_t
*data
,
270 const char *str
, ssize_t slen
)
272 static char const * const elements
[] = { "bg", "bg_margin", "text", "margin", "border", NULL
};
273 markup_parser_data_t p
=
275 .elements
= elements
,
277 .on_element
= &draw_markup_on_element
,
279 GError
*error
= NULL
;
282 markup_parser_data_init(&p
);
284 if(!markup_parse(&p
, str
, slen
))
287 if(!pango_parse_markup(p
.text
.s
, p
.text
.len
, 0, &data
->attr_list
, &data
->text
, NULL
, &error
))
289 warn("cannot parse pango markup: %s", error
? error
->message
: "unknown error");
295 data
->len
= a_strlen(data
->text
);
299 markup_parser_data_wipe(&p
);
303 /** Initialize a new draw context.
304 * \param d The draw context to initialize.
305 * \param phys_screen Physical screen id.
306 * \param width Width.
307 * \param height Height.
308 * \param px Pixmap object to store.
309 * \param fg Foreground color.
310 * \param bg Background color.
313 draw_context_init(draw_context_t
*d
, int phys_screen
,
314 int width
, int height
, xcb_pixmap_t px
,
315 const xcolor_t
*fg
, const xcolor_t
*bg
)
317 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, phys_screen
);
319 d
->phys_screen
= phys_screen
;
322 d
->depth
= s
->root_depth
;
323 d
->visual
= draw_screen_default_visual(s
);
325 d
->surface
= cairo_xcb_surface_create(globalconf
.connection
, px
, d
->visual
, width
, height
);
326 d
->cr
= cairo_create(d
->surface
);
327 d
->layout
= pango_cairo_create_layout(d
->cr
);
332 /** Draw text into a draw context.
333 * \param ctx Draw context to draw to.
334 * \param font The font to use.
335 * \param area Area to draw to.
336 * \param text Text to draw.
337 * \param len Text to draw length.
338 * \param data Optional parser data.
341 draw_text(draw_context_t
*ctx
, font_t
*font
,
342 area_t area
, const char *text
, ssize_t len
, draw_parser_data_t
*pdata
)
346 draw_parser_data_t parser_data
;
350 draw_parser_data_init(&parser_data
);
351 if(draw_text_markup_expand(&parser_data
, text
, len
))
353 text
= parser_data
.text
;
354 len
= parser_data
.len
;
356 pdata
= &parser_data
;
364 if(pdata
->has_bg_color
)
365 draw_rectangle(ctx
, area
, 1.0, true, &pdata
->bg_color
);
367 if(pdata
->border
.width
> 0)
368 draw_rectangle(ctx
, area
, pdata
->border
.width
, false, &pdata
->border
.color
);
374 switch(pdata
->bg_align
)
377 x
+= (area
.width
- pdata
->bg_image
->width
) / 2;
380 x
+= area
.width
- pdata
->bg_image
->width
;
386 x
+ pdata
->bg_margin
.left
,
387 y
+ pdata
->bg_margin
.top
,
388 pdata
->bg_resize
? area
.height
: 0, pdata
->bg_image
);
391 pango_layout_set_text(ctx
->layout
, pdata
->text
, pdata
->len
);
392 pango_layout_set_width(ctx
->layout
,
393 pango_units_from_double(area
.width
394 - (pdata
->margin
.left
395 + pdata
->margin
.right
)));
396 pango_layout_set_height(ctx
->layout
, pango_units_from_double(area
.height
));
397 pango_layout_set_ellipsize(ctx
->layout
, PANGO_ELLIPSIZE_END
);
398 pango_layout_set_wrap(ctx
->layout
, PANGO_WRAP_WORD_CHAR
);
399 pango_layout_set_attributes(ctx
->layout
, pdata
->attr_list
);
400 pango_layout_set_font_description(ctx
->layout
, font
->desc
);
401 pango_layout_get_pixel_extents(ctx
->layout
, NULL
, &ext
);
403 x
= area
.x
+ pdata
->margin
.left
;
404 /* + 1 is added for rounding, so that in any case of doubt we rather draw
405 * the text 1px lower than too high which usually results in a better type
407 y
= area
.y
+ (ctx
->height
- ext
.height
+ 1) / 2 + pdata
->margin
.top
;
412 x
+= (area
.width
- ext
.width
) / 2;
415 x
+= area
.width
- ext
.width
;
421 if(pdata
->shadow
.offset
)
423 cairo_set_source_rgba(ctx
->cr
,
424 pdata
->shadow
.color
.red
/ 65535.0,
425 pdata
->shadow
.color
.green
/ 65535.0,
426 pdata
->shadow
.color
.blue
/ 65535.0,
427 pdata
->shadow
.color
.alpha
/ 65535.0);
428 cairo_move_to(ctx
->cr
, x
+ pdata
->shadow
.offset
, y
+ pdata
->shadow
.offset
);
429 pango_cairo_layout_path(ctx
->cr
, ctx
->layout
);
430 cairo_stroke(ctx
->cr
);
433 cairo_move_to(ctx
->cr
, x
, y
);
435 cairo_set_source_rgba(ctx
->cr
,
436 ctx
->fg
.red
/ 65535.0,
437 ctx
->fg
.green
/ 65535.0,
438 ctx
->fg
.blue
/ 65535.0,
439 ctx
->fg
.alpha
/ 65535.0);
440 pango_cairo_update_layout(ctx
->cr
, ctx
->layout
);
441 pango_cairo_show_layout(ctx
->cr
, ctx
->layout
);
443 if (pdata
== &parser_data
)
444 draw_parser_data_wipe(&parser_data
);
447 /** Setup color-source for cairo (gradient or mono).
448 * \param ctx Draw context.
449 * \param gradient_vector x, y to x + x_offset, y + y_offset.
450 * \param pcolor Color to use at start of gradient_vector.
451 * \param pcolor_center Color at center of gradient_vector.
452 * \param pcolor_end Color at end of gradient_vector.
453 * \return pat Pattern or NULL, needs to get cairo_pattern_destroy()'ed.
455 static cairo_pattern_t
*
456 draw_setup_cairo_color_source(draw_context_t
*ctx
, vector_t gradient_vector
,
457 const xcolor_t
*pcolor
, const xcolor_t
*pcolor_center
,
458 const xcolor_t
*pcolor_end
)
460 cairo_pattern_t
*pat
= NULL
;
461 bool has_center
= pcolor_center
->initialized
;
462 bool has_end
= pcolor_end
->initialized
;
464 /* no need for a real pattern: */
465 if(!has_end
&& !has_center
)
466 cairo_set_source_rgba(ctx
->cr
,
467 pcolor
->red
/ 65535.0,
468 pcolor
->green
/ 65535.0,
469 pcolor
->blue
/ 65535.0,
470 pcolor
->alpha
/ 65535.0);
473 pat
= cairo_pattern_create_linear(gradient_vector
.x
,
475 gradient_vector
.x
+ gradient_vector
.x_offset
,
476 gradient_vector
.y
+ gradient_vector
.y_offset
);
478 /* pcolor is always set (so far in awesome) */
479 cairo_pattern_add_color_stop_rgba(pat
, 0.0,
480 pcolor
->red
/ 65535.0,
481 pcolor
->green
/ 65535.0,
482 pcolor
->blue
/ 65535.0,
483 pcolor
->alpha
/ 65535.0);
486 cairo_pattern_add_color_stop_rgba(pat
, 0.5,
487 pcolor_center
->red
/ 65535.0,
488 pcolor_center
->green
/ 65535.0,
489 pcolor_center
->blue
/ 65535.0,
490 pcolor_center
->alpha
/ 65535.0);
493 cairo_pattern_add_color_stop_rgba(pat
, 1.0,
494 pcolor_end
->red
/ 65535.0,
495 pcolor_end
->green
/ 65535.0,
496 pcolor_end
->blue
/ 65535.0,
497 pcolor_end
->alpha
/ 65535.0);
499 cairo_pattern_add_color_stop_rgba(pat
, 1.0,
500 pcolor
->red
/ 65535.0,
501 pcolor
->green
/ 65535.0,
502 pcolor
->blue
/ 65535.0,
503 pcolor
->alpha
/ 65535.0);
504 cairo_set_source(ctx
->cr
, pat
);
509 /** Draw rectangle inside the coordinates
510 * \param ctx Draw context
511 * \param geometry geometry
512 * \param line_width line width
513 * \param filled fill rectangle?
514 * \param color color to use
517 draw_rectangle(draw_context_t
*ctx
, area_t geometry
,
518 float line_width
, bool filled
, const xcolor_t
*color
)
520 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_NONE
);
521 cairo_set_line_width(ctx
->cr
, line_width
);
522 cairo_set_miter_limit(ctx
->cr
, 10.0);
523 cairo_set_line_join(ctx
->cr
, CAIRO_LINE_JOIN_MITER
);
524 cairo_set_source_rgba(ctx
->cr
,
525 color
->red
/ 65535.0,
526 color
->green
/ 65535.0,
527 color
->blue
/ 65535.0,
528 color
->alpha
/ 65535.0);
531 cairo_rectangle(ctx
->cr
, geometry
.x
, geometry
.y
,
532 geometry
.width
, geometry
.height
);
537 cairo_rectangle(ctx
->cr
, geometry
.x
+ line_width
/ 2.0, geometry
.y
+ line_width
/ 2.0,
538 geometry
.width
- line_width
, geometry
.height
- line_width
);
539 cairo_stroke(ctx
->cr
);
543 /** Draw rectangle with gradient colors
544 * \param ctx Draw context.
545 * \param geometry Geometry.
546 * \param line_width Line width.
547 * \param filled Filled rectangle?
548 * \param gradient_vector Color-gradient course.
549 * \param pcolor Color at start of gradient_vector.
550 * \param pcolor_center Color in the center.
551 * \param pcolor_end Color at end of gradient_vector.
554 draw_rectangle_gradient(draw_context_t
*ctx
, area_t geometry
, float line_width
, bool filled
,
555 vector_t gradient_vector
, const xcolor_t
*pcolor
,
556 const xcolor_t
*pcolor_center
, const xcolor_t
*pcolor_end
)
558 cairo_pattern_t
*pat
;
560 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_NONE
);
561 cairo_set_line_width(ctx
->cr
, line_width
);
562 cairo_set_miter_limit(ctx
->cr
, 10.0);
563 cairo_set_line_join(ctx
->cr
, CAIRO_LINE_JOIN_MITER
);
565 pat
= draw_setup_cairo_color_source(ctx
, gradient_vector
, pcolor
, pcolor_center
, pcolor_end
);
569 cairo_rectangle(ctx
->cr
, geometry
.x
, geometry
.y
, geometry
.width
, geometry
.height
);
574 cairo_rectangle(ctx
->cr
, geometry
.x
+ 1, geometry
.y
, geometry
.width
- 1, geometry
.height
- 1);
575 cairo_stroke(ctx
->cr
);
579 cairo_pattern_destroy(pat
);
582 /** Setup some cairo-things for drawing a graph
583 * \param ctx Draw context
586 draw_graph_setup(draw_context_t
*ctx
)
588 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_NONE
);
589 cairo_set_line_width(ctx
->cr
, 1.0);
590 /* without it, it can draw over the path on sharp angles
591 * ...too long lines * (...graph_line) */
592 cairo_set_miter_limit(ctx
->cr
, 0.0);
593 cairo_set_line_join(ctx
->cr
, CAIRO_LINE_JOIN_MITER
);
597 * \param ctx Draw context.
598 * \param rect The area to draw into.
599 * \param from Array of starting-point offsets to draw a graph lines.
600 * \param to Array of end-point offsets to draw a graph lines.
601 * \param cur_index Current position in data-array (cycles around).
602 * \param grow Put new values to the left or to the right.
603 * \param gradient_vector Color-Gradient course.
604 * \param pcolor Color at start of gradient_vector.
605 * \param pcolor_center Color in the center.
606 * \param pcolor_end Color at end of gradient_vector.
609 draw_graph(draw_context_t
*ctx
, area_t rect
, int *from
, int *to
, int cur_index
,
610 position_t grow
, vector_t gradient_vector
, const xcolor_t
*pcolor
,
611 const xcolor_t
*pcolor_center
, const xcolor_t
*pcolor_end
)
614 float x
= rect
.x
+ 0.5; /* middle of a pixel */
615 cairo_pattern_t
*pat
;
617 pat
= draw_setup_cairo_color_source(ctx
, gradient_vector
,
618 pcolor
, pcolor_center
, pcolor_end
);
620 if(grow
== Right
) /* draw from right to left */
623 while(++i
< rect
.width
)
625 cairo_move_to(ctx
->cr
, x
, rect
.y
- from
[cur_index
]);
626 cairo_line_to(ctx
->cr
, x
, rect
.y
- to
[cur_index
]);
630 cur_index
= rect
.width
- 1;
633 else /* draw from left to right */
634 while(++i
< rect
.width
)
636 cairo_move_to(ctx
->cr
, x
, rect
.y
- from
[cur_index
]);
637 cairo_line_to(ctx
->cr
, x
, rect
.y
- to
[cur_index
]);
641 cur_index
= rect
.width
- 1;
644 cairo_stroke(ctx
->cr
);
647 cairo_pattern_destroy(pat
);
650 /** Draw a line into a graph-widget.
651 * \param ctx Draw context.
652 * \param rect The area to draw into.
653 * \param to array of offsets to draw the line through...
654 * \param cur_index current position in data-array (cycles around)
655 * \param grow put new values to the left or to the right
656 * \param gradient_vector Color-gradient course.
657 * \param pcolor Color at start of gradient_vector.
658 * \param pcolor_center Color in the center.
659 * \param pcolor_end Color at end of gradient_vector.
662 draw_graph_line(draw_context_t
*ctx
, area_t rect
, int *to
, int cur_index
,
663 position_t grow
, vector_t gradient_vector
, const xcolor_t
*pcolor
,
664 const xcolor_t
*pcolor_center
, const xcolor_t
*pcolor_end
)
668 cairo_pattern_t
*pat
;
670 /* NOTE: without, it sometimes won't draw to some path (centered in a pixel)
671 * ... it won't fill some pixels! It also looks much nicer so.
672 * (since line-drawing is the last on the graph, no need to reset to _NONE) */
673 /* Not much difference to CAIRO_ANTIALIAS_DEFAULT, but recommend for LCD */
674 cairo_set_antialias(ctx
->cr
, CAIRO_ANTIALIAS_SUBPIXEL
);
675 /* a nicer, better visible line compared to 1.0 */
676 cairo_set_line_width(ctx
->cr
, 1.25);
678 pat
= draw_setup_cairo_color_source(ctx
, gradient_vector
, pcolor
, pcolor_center
, pcolor_end
);
680 /* path through the centers of pixels */
687 /* go through the values from old to new. Begin with the oldest. */
688 if(++cur_index
> w
- 1)
691 cairo_move_to(ctx
->cr
, x
, y
- to
[cur_index
]);
694 /* on the left border: fills a pixel also when there's only one value */
695 cairo_move_to(ctx
->cr
, x
- 1.0, y
- to
[cur_index
]);
697 for(i
= 0; i
< w
; i
++)
699 cairo_line_to(ctx
->cr
, x
, y
- to
[cur_index
]);
702 /* cycles around the index */
705 if (++cur_index
> w
- 1)
715 /* onto the right border: fills a pixel also when there's only one value */
717 cairo_line_to(ctx
->cr
, x
, y
- to
[cur_index
]);
719 cairo_stroke(ctx
->cr
);
722 cairo_pattern_destroy(pat
);
723 /* reset line-width */
724 cairo_set_line_width(ctx
->cr
, 1.0);
727 /** Draw an image from ARGB data to a draw context.
728 * Data should be stored as an array of alpha, red, blue, green for each pixel
729 * and the array size should be w * h elements long.
730 * \param ctx Draw context to draw to.
731 * \param x X coordinate.
732 * \param y Y coordinate.
735 * \param wanted_h Wanted height: if > 0, image will be resized.
736 * \param data The image pixels array.
739 draw_image_from_argb_data(draw_context_t
*ctx
, int x
, int y
, int w
, int h
,
740 int wanted_h
, unsigned char *data
)
744 cairo_surface_t
*source
;
746 source
= cairo_image_surface_create_for_data(data
, CAIRO_FORMAT_ARGB32
, w
, h
,
747 #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)
748 sizeof(unsigned char) * 4 * w
);
750 cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32
, w
));
752 cr
= cairo_create(ctx
->surface
);
753 if(wanted_h
> 0 && h
> 0)
755 ratio
= (double) wanted_h
/ (double) h
;
756 cairo_scale(cr
, ratio
, ratio
);
757 cairo_set_source_surface(cr
, source
, x
/ ratio
, y
/ ratio
);
760 cairo_set_source_surface(cr
, source
, x
, y
);
765 cairo_surface_destroy(source
);
768 /** Draw an image to a draw context.
769 * \param ctx Draw context to draw to.
770 * \param x X coordinate.
771 * \param y Y coordinate.
772 * \param wanted_h Wanted height: if > 0, image will be resized.
773 * \param image The image to draw.
776 draw_image(draw_context_t
*ctx
, int x
, int y
, int wanted_h
, image_t
*image
)
778 draw_image_from_argb_data(ctx
, x
, y
, image
->width
, image
->height
, wanted_h
, image
->data
);
782 * \param ctx Draw context to draw with.
783 * \param src Drawable to draw from.
784 * \param dest Drawable to draw to.
785 * \param src_w Drawable width.
786 * \param src_h Drawable height.
787 * \param dest_w Drawable width.
788 * \param dest_h Drawable height.
789 * \param angle angle to rotate.
790 * \param tx Translate to this x coordinate.
791 * \param ty Translate to this y coordinate.
794 draw_rotate(draw_context_t
*ctx
,
795 xcb_pixmap_t src
, xcb_pixmap_t dest
,
796 int src_w
, int src_h
,
797 int dest_w
, int dest_h
,
798 double angle
, int tx
, int ty
)
800 cairo_surface_t
*surface
, *source
;
803 surface
= cairo_xcb_surface_create(globalconf
.connection
, dest
,
804 ctx
->visual
, dest_w
, dest_h
);
805 source
= cairo_xcb_surface_create(globalconf
.connection
, src
,
806 ctx
->visual
, src_w
, src_h
);
807 cr
= cairo_create (surface
);
809 cairo_translate(cr
, tx
, ty
);
810 cairo_rotate(cr
, angle
);
812 cairo_set_source_surface(cr
, source
, 0.0, 0.0);
816 cairo_surface_destroy(source
);
817 cairo_surface_destroy(surface
);
820 /** Return the width and height of a text in pixel.
821 * \param phys_screen Physical screen number.
822 * \param font Font to use.
823 * \param text The text.
824 * \param len The text length.
825 * \param pdata The parser data to fill.
826 * \return Text height and width.
829 draw_text_extents(int phys_screen
, font_t
*font
,
830 const char *text
, ssize_t len
, draw_parser_data_t
*parser_data
)
832 cairo_surface_t
*surface
;
836 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, phys_screen
);
837 area_t geom
= { 0, 0, 0, 0 };
842 if(!draw_text_markup_expand(parser_data
, text
, len
))
845 surface
= cairo_xcb_surface_create(globalconf
.connection
, phys_screen
,
846 draw_screen_default_visual(s
),
848 s
->height_in_pixels
);
850 cr
= cairo_create(surface
);
851 layout
= pango_cairo_create_layout(cr
);
852 pango_layout_set_text(layout
, parser_data
->text
, parser_data
->len
);
853 pango_layout_set_attributes(layout
, parser_data
->attr_list
);
854 pango_layout_set_font_description(layout
, font
->desc
);
855 pango_layout_get_pixel_extents(layout
, NULL
, &ext
);
856 g_object_unref(layout
);
858 cairo_surface_destroy(surface
);
860 geom
.width
= ext
.width
;
861 geom
.height
= ext
.height
* 1.5;
866 /** Transform a string to a alignment_t type.
867 * Recognized string are left, center or right. Everything else will be
868 * recognized as AlignAuto.
869 * \param align Atring with align text.
870 * \param len The string length.
871 * \return An alignment_t type.
874 draw_align_fromstr(const char *align
, ssize_t len
)
876 switch (a_tokenize(align
, len
))
878 case A_TK_LEFT
: return AlignLeft
;
879 case A_TK_CENTER
: return AlignCenter
;
880 case A_TK_RIGHT
: return AlignRight
;
881 case A_TK_FLEX
: return AlignFlex
;
882 default: return AlignAuto
;
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 AlignAuto
: return "auto";
900 default: return NULL
;
904 #define RGB_COLOR_8_TO_16(i) (65535 * ((i) & 0xff) / 255)
906 /** Send a request to initialize a X color.
907 * \param color xcolor_t struct to store color into.
908 * \param colstr Color specification.
909 * \return request informations.
911 xcolor_init_request_t
912 xcolor_init_unchecked(xcolor_t
*color
, const char *colstr
, ssize_t len
)
914 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
, globalconf
.default_screen
);
915 xcolor_init_request_t req
;
916 unsigned long colnum
;
917 uint16_t red
, green
, blue
;
923 req
.has_error
= true;
930 /* The color is given in RGB value */
937 colnum
= strtoul(colstr
+ 1, &p
, 16);
944 colnum
= strtoul(colstr
+ 1, &p
, 16);
947 req
.alpha
= RGB_COLOR_8_TO_16(colnum
);
953 warn("awesome: error, invalid color '%s'", colstr
);
954 req
.has_error
= true;
958 red
= RGB_COLOR_8_TO_16(colnum
>> 16);
959 green
= RGB_COLOR_8_TO_16(colnum
>> 8);
960 blue
= RGB_COLOR_8_TO_16(colnum
);
963 req
.cookie_hexa
= xcb_alloc_color_unchecked(globalconf
.connection
,
970 req
.cookie_named
= xcb_alloc_named_color_unchecked(globalconf
.connection
,
971 s
->default_colormap
, len
,
975 req
.has_error
= false;
981 /** Initialize a X color.
982 * \param req xcolor_init request.
983 * \return True if color allocation was successfull.
986 xcolor_init_reply(xcolor_init_request_t req
)
993 xcb_alloc_color_reply_t
*hexa_color
;
995 if((hexa_color
= xcb_alloc_color_reply(globalconf
.connection
,
996 req
.cookie_hexa
, NULL
)))
998 req
.color
->pixel
= hexa_color
->pixel
;
999 req
.color
->red
= hexa_color
->red
;
1000 req
.color
->green
= hexa_color
->green
;
1001 req
.color
->blue
= hexa_color
->blue
;
1002 req
.color
->alpha
= req
.alpha
;
1003 req
.color
->initialized
= true;
1004 p_delete(&hexa_color
);
1010 xcb_alloc_named_color_reply_t
*named_color
;
1012 if((named_color
= xcb_alloc_named_color_reply(globalconf
.connection
,
1013 req
.cookie_named
, NULL
)))
1015 req
.color
->pixel
= named_color
->pixel
;
1016 req
.color
->red
= named_color
->visual_red
;
1017 req
.color
->green
= named_color
->visual_green
;
1018 req
.color
->blue
= named_color
->visual_blue
;
1019 req
.color
->alpha
= req
.alpha
;
1020 req
.color
->initialized
= true;
1021 p_delete(&named_color
);
1026 warn("awesome: error, cannot allocate color '%s'", req
.colstr
);
1030 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80