1 /**************************************************************************
3 * Copyright (C) 2009 Andreas.Fink (Andreas.Fink85@gmail.com)
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
16 **************************************************************************/
21 #include <cairo-xlib.h>
27 // TODO: Use timer_create instead of setitimer, because SIGALRM is not the right signal for this...
28 // Reason: If we want to implement autohide we have to use another signal...
30 static int x
, y
, width
, height
;
32 // give the tooltip some reasonable default values
36 .show_timeout
= { .it_interval
={0, 0}, .it_value
={0, 0} },
37 .hide_timeout
= { .it_interval
={0, 0}, .it_value
={0, 0} },
39 .current_state
= TOOLTIP_ABOUT_TO_HIDE
,
43 .font_color
= { .color
={1, 1, 1}, .alpha
=1 },
44 .background_color
= { .color
={0.5, 0.4, 0.5}, .alpha
=1 },
45 .border
= { .color
={0, 0, 0}, .alpha
=1, .width
=1, .rounded
=0 },
51 if (!g_tooltip
.font_desc
)
52 g_tooltip
.font_desc
= pango_font_description_from_string("sans 10");
54 XSetWindowAttributes attr
;
55 attr
.override_redirect
= True
;
56 attr
.event_mask
= ExposureMask
;
57 if (g_tooltip
.window
) XDestroyWindow(server
.dsp
, g_tooltip
.window
);
58 g_tooltip
.window
= XCreateWindow(server
.dsp
, server
.root_win
, 0, 0, 100, 20, 0, server
.depth
, InputOutput
, CopyFromParent
, CWOverrideRedirect
|CWEventMask
, &attr
);
62 void cleanup_tooltip()
65 g_tooltip
.enabled
= False
;
70 if (g_tooltip
.window
) {
71 XDestroyWindow(server
.dsp
, g_tooltip
.window
);
74 if (g_tooltip
.font_desc
) {
75 pango_font_description_free(g_tooltip
.font_desc
);
76 g_tooltip
.font_desc
= 0;
81 void tooltip_sighandler(int sig
)
83 if (g_tooltip
.current_state
== TOOLTIP_ABOUT_TO_SHOW
)
85 else if (g_tooltip
.current_state
== TOOLTIP_ABOUT_TO_HIDE
)
90 void tooltip_trigger_show(Task
* task
, int x_root
, int y_root
)
95 if (g_tooltip
.mapped
&& g_tooltip
.task
!= task
) {
96 g_tooltip
.task
= task
;
100 else if (!g_tooltip
.mapped
) {
101 g_tooltip
.current_state
= TOOLTIP_ABOUT_TO_SHOW
;
102 g_tooltip
.task
= task
;
103 struct timeval t
= g_tooltip
.show_timeout
.it_value
;
104 if (t
.tv_sec
== 0 && t
.tv_usec
== 0) {
109 setitimer(ITIMER_REAL
, &g_tooltip
.show_timeout
, 0);
116 if (!g_tooltip
.mapped
) {
117 g_tooltip
.mapped
= True
;
118 XMapWindow(server
.dsp
, g_tooltip
.window
);
125 void tooltip_update_geometry()
130 cs
= cairo_xlib_surface_create(server
.dsp
, g_tooltip
.window
, server
.visual
, width
, height
);
131 c
= cairo_create(cs
);
132 layout
= pango_cairo_create_layout(c
);
133 pango_layout_set_font_description(layout
, g_tooltip
.font_desc
);
134 pango_layout_set_text(layout
, g_tooltip
.task
->title
, -1);
135 PangoRectangle r1
, r2
;
136 pango_layout_get_pixel_extents(layout
, &r1
, &r2
);
137 width
= 2*g_tooltip
.border
.width
+ 2*g_tooltip
.paddingx
+ r2
.width
;
138 height
= 2*g_tooltip
.border
.width
+ 2*g_tooltip
.paddingy
+ r2
.height
;
140 Panel
* panel
= g_tooltip
.task
->area
.panel
;
141 if (panel_horizontal
&& panel_position
& BOTTOM
)
142 y
= panel
->posy
-height
;
143 else if (panel_horizontal
&& panel_position
& TOP
)
144 y
= panel
->posy
+ panel
->area
.height
;
145 else if (panel_position
& LEFT
)
146 x
= panel
->posx
+ panel
->area
.width
;
148 x
= panel
->posx
- width
;
149 g_object_unref(layout
);
151 cairo_surface_destroy(cs
);
155 void tooltip_adjust_geometry()
157 // adjust coordinates and size to not go offscreen
158 // it seems quite impossible that the height needs to be adjusted, but we do it anyway.
160 int min_x
, min_y
, max_width
, max_height
;
161 Panel
* panel
= g_tooltip
.task
->area
.panel
;
162 int screen_width
= server
.monitor
[panel
->monitor
].width
;
163 int screen_height
= server
.monitor
[panel
->monitor
].height
;
164 if ( x
+width
<= screen_width
&& y
+height
<= screen_height
&& x
>=0 && y
>=0)
165 return; // no adjustment needed
167 if (panel_horizontal
) {
169 max_width
=screen_width
;
170 max_height
=screen_height
-panel
->area
.height
;
171 if (panel_position
& BOTTOM
)
174 min_y
=panel
->area
.height
;
177 max_width
=screen_width
-panel
->area
.width
;
179 max_height
=screen_height
;
180 if (panel_position
& LEFT
)
181 min_x
=panel
->area
.width
;
186 if (x
+width
> server
.monitor
[panel
->monitor
].width
)
187 x
= server
.monitor
[panel
->monitor
].width
-width
;
188 if ( y
+height
>server
.monitor
[panel
->monitor
].height
)
189 y
= server
.monitor
[panel
->monitor
].height
-height
;
197 if (height
>max_height
)
201 void tooltip_update()
203 if (!g_tooltip
.task
) {
208 tooltip_update_geometry();
209 tooltip_adjust_geometry();
210 XMoveResizeWindow(server
.dsp
, g_tooltip
.window
, x
, y
, width
, height
);
212 // Stuff for drawing the tooltip
216 cs
= cairo_xlib_surface_create(server
.dsp
, g_tooltip
.window
, server
.visual
, width
, height
);
217 c
= cairo_create(cs
);
218 Color bc
= g_tooltip
.background_color
;
219 cairo_rectangle(c
, 0, 0, width
, height
);
220 cairo_set_source_rgb(c
, bc
.color
[0], bc
.color
[1], bc
.color
[2]);
222 Border b
= g_tooltip
.border
;
223 cairo_set_source_rgba(c
, b
.color
[0], b
.color
[1], b
.color
[2], b
.alpha
);
224 cairo_set_line_width(c
, b
.width
);
225 cairo_rectangle(c
, b
.width
/2.0, b
.width
/2.0, width
-b
.width
, height
-b
.width
);
228 config_color fc
= g_tooltip
.font_color
;
229 cairo_set_source_rgba(c
, fc
.color
[0], fc
.color
[1], fc
.color
[2], fc
.alpha
);
230 layout
= pango_cairo_create_layout(c
);
231 pango_layout_set_font_description(layout
, g_tooltip
.font_desc
);
232 pango_layout_set_text(layout
, g_tooltip
.task
->title
, -1);
233 PangoRectangle r1
, r2
;
234 pango_layout_get_pixel_extents(layout
, &r1
, &r2
);
235 pango_layout_set_width(layout
, width
*PANGO_SCALE
);
236 pango_layout_set_height(layout
, height
*PANGO_SCALE
);
237 pango_layout_set_ellipsize(layout
, PANGO_ELLIPSIZE_END
);
238 // I do not know why this is the right way, but with the below cairo_move_to it seems to be centered (horiz. and vert.)
239 cairo_move_to(c
, -r1
.x
/2+g_tooltip
.border
.width
+g_tooltip
.paddingx
, -r1
.y
/2+g_tooltip
.border
.width
+g_tooltip
.paddingy
);
240 pango_cairo_show_layout (c
, layout
);
242 g_object_unref (layout
);
244 cairo_surface_destroy (cs
);
248 void tooltip_trigger_hide(Tooltip
* tooltip
)
250 if (g_tooltip
.mapped
) {
251 g_tooltip
.current_state
= TOOLTIP_ABOUT_TO_HIDE
;
252 struct timeval t
= g_tooltip
.hide_timeout
.it_value
;
254 if (t
.tv_sec
== 0 && t
.tv_usec
== 0) {
259 setitimer(ITIMER_REAL
, &g_tooltip
.hide_timeout
, 0);
262 // tooltip not visible yet, but maybe an alarm is still pending
270 if (g_tooltip
.mapped
) {
271 g_tooltip
.mapped
= False
;
272 XUnmapWindow(server
.dsp
, g_tooltip
.window
);