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Dogcows Code - chaz/tint2/blob - src/util/area.c
1 /**************************************************************************
5 * Copyright (C) 2008 thierry lorthiois (lorthiois@bbsoft.fr)
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation.
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.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 **************************************************************************/
21 #include <X11/Xutil.h>
22 #include <X11/Xatom.h>
23 #include <X11/extensions/Xrender.h>
27 #include <pango/pangocairo.h>
34 /************************************************************
35 * !!! This design is experimental and not yet fully implemented !!!!!!!!!!!!!
38 * Areas in tint2 are similar to widgets in a GUI.
39 * Graphical objects (panel, taskbar, task, systray, clock, ...) in tint2 'inherit' an Area class.
40 * Area is an abstract class of objects. It's at the begining of each object (&object == &area).
41 * Area manage the background and border drawing, size and padding.
44 * tint2 define one panel per monitor. And each panel have a tree of Area (nodes).
45 * The root of the tree is Panel.Area. And task, clock, systray, taskbar,... are nodes.
47 * 'panel_items' parameter (in config) define the list and the order of nodes in tree's panel.
48 * 'panel_items = SC' define a panel with just Systray and Clock.
49 * So the root Panel.Area will have 2 childs (Systray and Clock).
51 * The tree allow to browse panel's objects from background to foreground and from left to right.
52 * The position of each node/Area depend on parent's position and brothers on the left.
55 * In the end, redrawing an object (like the clock) could come from an external event (date change)
56 * or from a layering event (size or position change).
60 * 1) browse tree and resize SIZE_BY_CONTENT node
61 * - children node are resized before its parent
62 * - if 'size' changed then 'resize = 1' on the parent
63 * 2) browse tree and resize SIZE_BY_LAYOUT node
64 * - parent node is resized before its children
65 * - if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
66 * 3) calculate posx of objects
67 * - parent's position is calculated before children's position
68 * - if 'position' changed then 'redraw = 1'
69 * 4) redraw needed objects
70 * - parent node is drawn before its children
72 * perhaps 2) and 3) can be merged...
73 ************************************************************/
76 void refresh (Area
*a
)
78 // don't draw and resize hide objects
79 if (!a
->on_screen
) return;
81 // don't draw transparent objects (without foreground and without background)
84 // force redraw of child
86 for (l
= a
->list
; l
; l
= l
->next
)
89 //printf("draw area posx %d, width %d\n", a->posx, a->width);
94 if (a
->pix
== 0) printf("empty area posx %d, width %d\n", a
->posx
, a
->width
);
95 XCopyArea (server
.dsp
, a
->pix
, ((Panel
*)a
->panel
)->temp_pmap
, server
.gc
, 0, 0, a
->width
, a
->height
, a
->posx
, a
->posy
);
97 // and then refresh child object
99 for (l
= a
->list
; l
; l
= l
->next
)
104 void size_by_content (Area
*a
)
106 // don't draw and resize hide objects
107 if (!a
->on_screen
) return;
109 // children node are resized before its parent
111 for (l
= a
->list
; l
; l
= l
->next
)
112 size_by_content(l
->data
);
114 // calculate current area's size
115 if (a
->resize
&& a
->size_mode
== SIZE_BY_CONTENT
) {
118 // if 'size' changed then 'resize = 1' on the parent
121 ((Area
*)a
->parent
)->resize
= 1;
127 void size_by_layout (Area
*a
)
129 // don't draw and resize hide objects
130 if (!a
->on_screen
) return;
132 // parent node is resized before its children
133 // calculate current area's size
135 if (a
->resize
&& a
->size_mode
== SIZE_BY_LAYOUT
) {
138 // if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
141 for (l
= a
->list
; l
; l
= l
->next
) {
142 if (((Area
*)l
->data
)->size_mode
== SIZE_BY_LAYOUT
)
143 ((Area
*)l
->data
)->resize
= 1;
148 for (l
= a
->list
; l
; l
= l
->next
)
149 size_by_layout(l
->data
);
153 void set_redraw (Area
*a
)
158 for (l
= a
->list
; l
; l
= l
->next
)
165 if (a
->pix
) XFreePixmap (server
.dsp
, a
->pix
);
166 a
->pix
= XCreatePixmap (server
.dsp
, server
.root_win
, a
->width
, a
->height
, server
.depth
);
168 // add layer of root pixmap (or clear pixmap if real_transparency==true)
169 if (server
.real_transparency
)
170 clear_pixmap(a
->pix
, 0 ,0, a
->width
, a
->height
);
171 XCopyArea (server
.dsp
, ((Panel
*)a
->panel
)->temp_pmap
, a
->pix
, server
.gc
, a
->posx
, a
->posy
, a
->width
, a
->height
, 0, 0);
176 cs
= cairo_xlib_surface_create (server
.dsp
, a
->pix
, server
.visual
, a
->width
, a
->height
);
177 c
= cairo_create (cs
);
179 draw_background (a
, c
);
181 if (a
->_draw_foreground
)
182 a
->_draw_foreground(a
, c
);
185 cairo_surface_destroy (cs
);
189 void draw_background (Area
*a
, cairo_t
*c
)
191 if (a
->bg
->back
.alpha
> 0.0) {
192 //printf(" draw_background (%d %d) RGBA (%lf, %lf, %lf, %lf)\n", a->posx, a->posy, pix->back.color[0], pix->back.color[1], pix->back.color[2], pix->back.alpha);
193 draw_rect(c
, a
->bg
->border
.width
, a
->bg
->border
.width
, a
->width
-(2.0 * a
->bg
->border
.width
), a
->height
-(2.0*a
->bg
->border
.width
), a
->bg
->border
.rounded
- a
->bg
->border
.width
/1.571);
194 cairo_set_source_rgba(c
, a
->bg
->back
.color
[0], a
->bg
->back
.color
[1], a
->bg
->back
.color
[2], a
->bg
->back
.alpha
);
198 if (a
->bg
->border
.width
> 0 && a
->bg
->border
.alpha
> 0.0) {
199 cairo_set_line_width (c
, a
->bg
->border
.width
);
201 // draw border inside (x, y, width, height)
202 draw_rect(c
, a
->bg
->border
.width
/2.0, a
->bg
->border
.width
/2.0, a
->width
- a
->bg
->border
.width
, a
->height
- a
->bg
->border
.width
, a
->bg
->border
.rounded
);
204 // convert : radian = degre * M_PI/180
205 // definir le degrade dans un carre de (0,0) (100,100)
206 // ensuite ce degrade est extrapoler selon le ratio width/height
207 // dans repere (0, 0) (100, 100)
208 double X0, Y0, X1, Y1, degre;
209 // x = X * (a->width / 100), y = Y * (a->height / 100)
210 double x0, y0, x1, y1;
216 // et ensuite faire la changement d'unite du repere
217 // car ce qui doit reste inchangee est les traits et pas la direction
219 // il faut d'abord appliquer une rotation de 90 (et -180 si l'angle est superieur a 180)
220 // ceci peut etre applique une fois pour toute au depart
221 // ensuite calculer l'angle dans le nouveau repare
222 // puis faire une rotation de 90
223 x0 = X0 * ((double)a->width / 100);
224 x1 = X1 * ((double)a->width / 100);
225 y0 = Y0 * ((double)a->height / 100);
226 y1 = Y1 * ((double)a->height / 100);
228 x0 = X0 * ((double)a->height / 100);
229 x1 = X1 * ((double)a->height / 100);
230 y0 = Y0 * ((double)a->width / 100);
231 y1 = Y1 * ((double)a->width / 100);
233 cairo_pattern_t *linpat;
234 linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
235 cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
236 cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
237 cairo_set_source (c, linpat);
239 cairo_set_source_rgba (c
, a
->bg
->border
.color
[0], a
->bg
->border
.color
[1], a
->bg
->border
.color
[2], a
->bg
->border
.alpha
);
242 //cairo_pattern_destroy (linpat);
247 void remove_area (Area
*a
)
249 Area
*parent
= (Area
*)a
->parent
;
251 parent
->list
= g_slist_remove(parent
->list
, a
);
257 void add_area (Area
*a
)
259 Area
*parent
= (Area
*)a
->parent
;
261 parent
->list
= g_slist_remove(parent
->list
, a
);
267 void free_area (Area
*a
)
270 for (l0
= a
->list
; l0
; l0
= l0
->next
)
271 free_area (l0
->data
);
274 g_slist_free(a
->list
);
278 XFreePixmap (server
.dsp
, a
->pix
);
284 void draw_rect(cairo_t
*c
, double x
, double y
, double w
, double h
, double r
)
287 double c1
= 0.55228475 * r
;
289 cairo_move_to(c
, x
+r
, y
);
290 cairo_rel_line_to(c
, w
-2*r
, 0);
291 cairo_rel_curve_to(c
, c1
, 0.0, r
, c1
, r
, r
);
292 cairo_rel_line_to(c
, 0, h
-2*r
);
293 cairo_rel_curve_to(c
, 0.0, c1
, c1
-r
, r
, -r
, r
);
294 cairo_rel_line_to (c
, -w
+2*r
, 0);
295 cairo_rel_curve_to (c
, -c1
, 0, -r
, -c1
, -r
, -r
);
296 cairo_rel_line_to (c
, 0, -h
+ 2 * r
);
297 cairo_rel_curve_to (c
, 0, -c1
, r
- c1
, -r
, r
, -r
);
300 cairo_rectangle(c
, x
, y
, w
, h
);
304 void clear_pixmap(Pixmap p
, int x
, int y
, int w
, int h
)
306 Picture pict
= XRenderCreatePicture(server
.dsp
, p
, XRenderFindVisualFormat(server
.dsp
, server
.visual
), 0, 0);
307 XRenderColor col
= { .red
=0, .green
=0, .blue
=0, .alpha
=0 };
308 XRenderFillRectangle(server
.dsp
, PictOpSrc
, pict
, &col
, x
, y
, w
, h
);
309 XRenderFreePicture(server
.dsp
, pict
);
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