Dogcows Code - chaz/tint2/blob - src/util/area.c

   1 /**************************************************************************
   2 *
   3 * Tint2 : area
   4 *
   5 * Copyright (C) 2008 thierry lorthiois (lorthiois@bbsoft.fr)
   6 *
   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.
  10 *
  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 **************************************************************************/
  19
  20 #include <X11/Xlib.h>
  21 #include <X11/Xutil.h>
  22 #include <X11/Xatom.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <pango/pangocairo.h>
  27
  28 #include "area.h"
  29 #include "server.h"
  30 #include "panel.h"
  31
  32 // 1) resize child
  33 // 2) resize parent
  34 // 3) redraw parent
  35 // 4) redraw child
  36 void refresh (Area *a)
  37 {
  38         // don't draw and resize hide objects
  39         if (!a->on_screen) return;
  40
  41         size(a);
  42
  43         // don't draw transparent objects (without foreground and without background)
  44         if (a->redraw) {
  45                 a->redraw = 0;
  46                 // force redraw of child
  47                 GSList *l;
  48                 for (l = a->list ; l ; l = l->next)
  49                         set_redraw(l->data);
  50
  51                 //printf("draw area posx %d, width %d\n", a->posx, a->width);
  52                 draw(a, 0);
  53                 if (a->use_active)
  54                         draw(a, 1);
  55         }
  56
  57         // draw current Area
  58         Pixmap *pmap = (a->is_active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  59         if (*pmap == 0) printf("empty area posx %d, width %d\n", a->posx, a->width);
  60         XCopyArea (server.dsp, *pmap, ((Panel *)a->panel)->temp_pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
  61
  62         // and then refresh child object
  63         GSList *l;
  64         for (l = a->list; l ; l = l->next)
  65                 refresh(l->data);
  66 }
  67
  68
  69 void size (Area *a)
  70 {
  71         GSList *l;
  72
  73         if (a->resize) {
  74                 a->resize = 0;
  75                 for (l = a->list; l ; l = l->next)
  76                         size(l->data);
  77
  78                 // resize can generate a redraw
  79                 if (a->_resize) {
  80                         a->_resize(a);
  81                 }
  82         }
  83 }
  84
  85
  86 void set_redraw (Area *a)
  87 {
  88         a->redraw = 1;
  89
  90         GSList *l;
  91         for (l = a->list ; l ; l = l->next)
  92                 set_redraw(l->data);
  93 }
  94
  95
  96 void draw (Area *a, int active)
  97 {
  98         Pixmap *pmap = (active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  99
 100         if (*pmap) XFreePixmap (server.dsp, *pmap);
 101         *pmap = XCreatePixmap (server.dsp, server.root_win, a->width, a->height, server.depth);
 102
 103         // add layer of root pixmap
 104         XCopyArea (server.dsp, ((Panel *)a->panel)->temp_pmap, *pmap, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
 105
 106         cairo_surface_t *cs;
 107         cairo_t *c;
 108
 109         cs = cairo_xlib_surface_create (server.dsp, *pmap, server.visual, a->width, a->height);
 110         c = cairo_create (cs);
 111
 112         draw_background (a, c, active);
 113
 114         if (a->_draw_foreground)
 115                 a->_draw_foreground(a, c, active);
 116
 117         cairo_destroy (c);
 118         cairo_surface_destroy (cs);
 119 }
 120
 121
 122 void draw_background (Area *a, cairo_t *c, int active)
 123 {
 124         Pmap *pix = (active == 0) ? (&a->pix) : (&a->pix_active);
 125
 126         if (pix->back.alpha > 0.0) {
 127                 //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);
 128                 draw_rect(c, pix->border.width, pix->border.width, a->width-(2.0 * pix->border.width), a->height-(2.0*pix->border.width), pix->border.rounded - pix->border.width/1.571);
 129                 cairo_set_source_rgba(c, pix->back.color[0], pix->back.color[1], pix->back.color[2], pix->back.alpha);
 130
 131                 cairo_fill(c);
 132         }
 133
 134         if (pix->border.width > 0 && pix->border.alpha > 0.0) {
 135                 cairo_set_line_width (c, pix->border.width);
 136
 137                 // draw border inside (x, y, width, height)
 138                 draw_rect(c, pix->border.width/2.0, pix->border.width/2.0, a->width - pix->border.width, a->height - pix->border.width, pix->border.rounded);
 139                 /*
 140                 // convert : radian = degre * M_PI/180
 141                 // définir le dégradé dans un carré de (0,0) (100,100)
 142                 // ensuite ce dégradé est extrapolé selon le ratio width/height
 143                 // dans repère (0, 0) (100, 100)
 144                 double X0, Y0, X1, Y1, degre;
 145                 // x = X * (a->width / 100), y = Y * (a->height / 100)
 146                 double x0, y0, x1, y1;
 147                 X0 = 0;
 148                 Y0 = 100;
 149                 X1 = 100;
 150                 Y1 = 0;
 151                 degre = 45;
 152                 // et ensuite faire la changement d'unité du repère
 153                 // car ce qui doit resté inchangée est les traits et pas la direction
 154
 155                 // il faut d'abord appliquer une rotation de 90° (et -180° si l'angle est supérieur à 180°)
 156                 // ceci peut être appliqué une fois pour toute au départ
 157                 // ensuite calculer l'angle dans le nouveau repère
 158                 // puis faire une rotation de 90°
 159                 x0 = X0 * ((double)a->width / 100);
 160                 x1 = X1 * ((double)a->width / 100);
 161                 y0 = Y0 * ((double)a->height / 100);
 162                 y1 = Y1 * ((double)a->height / 100);
 163
 164                 x0 = X0 * ((double)a->height / 100);
 165                 x1 = X1 * ((double)a->height / 100);
 166                 y0 = Y0 * ((double)a->width / 100);
 167                 y1 = Y1 * ((double)a->width / 100);
 168
 169                 cairo_pattern_t *linpat;
 170                 linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
 171                 cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
 172                 cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
 173                 cairo_set_source (c, linpat);
 174                 */
 175                 cairo_set_source_rgba (c, pix->border.color[0], pix->border.color[1], pix->border.color[2], pix->border.alpha);
 176
 177                 cairo_stroke (c);
 178                 //cairo_pattern_destroy (linpat);
 179         }
 180 }
 181
 182
 183 void remove_area (Area *a)
 184 {
 185         Area *parent = (Area*)a->parent;
 186
 187         parent->list = g_slist_remove(parent->list, a);
 188         set_redraw (parent);
 189
 190 }
 191
 192
 193 void add_area (Area *a)
 194 {
 195         Area *parent = (Area*)a->parent;
 196
 197         parent->list = g_slist_remove(parent->list, a);
 198         set_redraw (parent);
 199
 200 }
 201
 202
 203 void free_area (Area *a)
 204 {
 205         GSList *l0;
 206         for (l0 = a->list; l0 ; l0 = l0->next)
 207                 free_area (l0->data);
 208
 209         if (a->list) {
 210                 g_slist_free(a->list);
 211                 a->list = 0;
 212         }
 213         if (a->pix.pmap) {
 214                 XFreePixmap (server.dsp, a->pix.pmap);
 215                 a->pix.pmap = 0;
 216         }
 217         if (a->pix_active.pmap) {
 218                 XFreePixmap (server.dsp, a->pix_active.pmap);
 219                 a->pix_active.pmap = 0;
 220         }
 221 }
 222
 223
 224 void draw_rect(cairo_t *c, double x, double y, double w, double h, double r)
 225 {
 226         if (r > 0.0) {
 227                 double c1 = 0.55228475 * r;
 228
 229                 cairo_move_to(c, x+r, y);
 230                 cairo_rel_line_to(c, w-2*r, 0);
 231                 cairo_rel_curve_to(c, c1, 0.0, r, c1, r, r);
 232                 cairo_rel_line_to(c, 0, h-2*r);
 233                 cairo_rel_curve_to(c, 0.0, c1, c1-r, r, -r, r);
 234                 cairo_rel_line_to (c, -w +2*r, 0);
 235                 cairo_rel_curve_to (c, -c1, 0, -r, -c1, -r, -r);
 236                 cairo_rel_line_to (c, 0, -h + 2 * r);
 237                 cairo_rel_curve_to (c, 0, -c1, r - c1, -r, r, -r);
 238         }
 239         else
 240                 cairo_rectangle(c, x, y, w, h);
 241 }
 242
 243