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                 //printf("draw area posx %d, width %d\n", a->posx, a->width);
  47                 draw(a, 0);
  48                 if (a->use_active)
  49                         draw(a, 1);
  50         }
  51
  52         // draw current Area
  53         Pixmap *pmap = (a->is_active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  54         if (*pmap == 0) printf("empty area posx %d, width %d\n", a->posx, a->width);
  55         XCopyArea (server.dsp, *pmap, ((Panel *)a->panel)->temp_pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
  56
  57         // and then refresh child object
  58         GSList *l;
  59         for (l = a->list; l ; l = l->next)
  60                 refresh(l->data);
  61 }
  62
  63
  64 void size (Area *a)
  65 {
  66         GSList *l;
  67
  68         if (a->resize) {
  69                 a->resize = 0;
  70                 for (l = a->list; l ; l = l->next)
  71                         size(l->data);
  72
  73                 // resize can generate a redraw
  74                 if (a->_resize) {
  75                         a->_resize(a);
  76                 }
  77         }
  78 }
  79
  80
  81 void set_redraw (Area *a)
  82 {
  83         a->redraw = 1;
  84
  85         GSList *l;
  86         for (l = a->list ; l ; l = l->next)
  87                 set_redraw(l->data);
  88 }
  89
  90
  91 void draw (Area *a, int active)
  92 {
  93         Pixmap *pmap = (active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  94
  95         if (*pmap) XFreePixmap (server.dsp, *pmap);
  96         *pmap = XCreatePixmap (server.dsp, server.root_win, a->width, a->height, server.depth);
  97
  98         // add layer of root pixmap
  99         XCopyArea (server.dsp, ((Panel *)a->panel)->temp_pmap, *pmap, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
 100
 101         cairo_surface_t *cs;
 102         cairo_t *c;
 103
 104         cs = cairo_xlib_surface_create (server.dsp, *pmap, server.visual, a->width, a->height);
 105         c = cairo_create (cs);
 106
 107         draw_background (a, c, active);
 108
 109         if (a->_draw_foreground)
 110                 a->_draw_foreground(a, c, active);
 111
 112         cairo_destroy (c);
 113         cairo_surface_destroy (cs);
 114 }
 115
 116
 117 void draw_background (Area *a, cairo_t *c, int active)
 118 {
 119         Pmap *pix = (active == 0) ? (&a->pix) : (&a->pix_active);
 120
 121         if (pix->back.alpha > 0.0) {
 122                 //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);
 123                 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);
 124                 cairo_set_source_rgba(c, pix->back.color[0], pix->back.color[1], pix->back.color[2], pix->back.alpha);
 125
 126                 cairo_fill(c);
 127         }
 128
 129         if (pix->border.width > 0 && pix->border.alpha > 0.0) {
 130                 cairo_set_line_width (c, pix->border.width);
 131
 132                 // draw border inside (x, y, width, height)
 133                 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);
 134                 /*
 135                 // convert : radian = degre * M_PI/180
 136                 // définir le dégradé dans un carré de (0,0) (100,100)
 137                 // ensuite ce dégradé est extrapolé selon le ratio width/height
 138                 // dans repère (0, 0) (100, 100)
 139                 double X0, Y0, X1, Y1, degre;
 140                 // x = X * (a->width / 100), y = Y * (a->height / 100)
 141                 double x0, y0, x1, y1;
 142                 X0 = 0;
 143                 Y0 = 100;
 144                 X1 = 100;
 145                 Y1 = 0;
 146                 degre = 45;
 147                 // et ensuite faire la changement d'unité du repère
 148                 // car ce qui doit resté inchangée est les traits et pas la direction
 149
 150                 // il faut d'abord appliquer une rotation de 90° (et -180° si l'angle est supérieur à 180°)
 151                 // ceci peut être appliqué une fois pour toute au départ
 152                 // ensuite calculer l'angle dans le nouveau repère
 153                 // puis faire une rotation de 90°
 154                 x0 = X0 * ((double)a->width / 100);
 155                 x1 = X1 * ((double)a->width / 100);
 156                 y0 = Y0 * ((double)a->height / 100);
 157                 y1 = Y1 * ((double)a->height / 100);
 158
 159                 x0 = X0 * ((double)a->height / 100);
 160                 x1 = X1 * ((double)a->height / 100);
 161                 y0 = Y0 * ((double)a->width / 100);
 162                 y1 = Y1 * ((double)a->width / 100);
 163
 164                 cairo_pattern_t *linpat;
 165                 linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
 166                 cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
 167                 cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
 168                 cairo_set_source (c, linpat);
 169                 */
 170                 cairo_set_source_rgba (c, pix->border.color[0], pix->border.color[1], pix->border.color[2], pix->border.alpha);
 171
 172                 cairo_stroke (c);
 173                 //cairo_pattern_destroy (linpat);
 174         }
 175 }
 176
 177
 178 void remove_area (Area *a)
 179 {
 180         Area *parent = (Area*)a->parent;
 181
 182         parent->list = g_slist_remove(parent->list, a);
 183         set_redraw (parent);
 184
 185 }
 186
 187
 188 void add_area (Area *a)
 189 {
 190         Area *parent = (Area*)a->parent;
 191
 192         parent->list = g_slist_remove(parent->list, a);
 193         set_redraw (parent);
 194
 195 }
 196
 197
 198 void free_area (Area *a)
 199 {
 200         GSList *l0;
 201         for (l0 = a->list; l0 ; l0 = l0->next)
 202                 free_area (l0->data);
 203
 204         if (a->list) {
 205                 g_slist_free(a->list);
 206                 a->list = 0;
 207         }
 208         if (a->pix.pmap) {
 209                 XFreePixmap (server.dsp, a->pix.pmap);
 210                 a->pix.pmap = 0;
 211         }
 212         if (a->pix_active.pmap) {
 213                 XFreePixmap (server.dsp, a->pix_active.pmap);
 214                 a->pix_active.pmap = 0;
 215         }
 216 }
 217
 218
 219 void draw_rect(cairo_t *c, double x, double y, double w, double h, double r)
 220 {
 221         if (r > 0.0) {
 222                 double c1 = 0.55228475 * r;
 223
 224                 cairo_move_to(c, x+r, y);
 225                 cairo_rel_line_to(c, w-2*r, 0);
 226                 cairo_rel_curve_to(c, c1, 0.0, r, c1, r, r);
 227                 cairo_rel_line_to(c, 0, h-2*r);
 228                 cairo_rel_curve_to(c, 0.0, c1, c1-r, r, -r, r);
 229                 cairo_rel_line_to (c, -w +2*r, 0);
 230                 cairo_rel_curve_to (c, -c1, 0, -r, -c1, -r, -r);
 231                 cairo_rel_line_to (c, 0, -h + 2 * r);
 232                 cairo_rel_curve_to (c, 0, -c1, r - c1, -r, r, -r);
 233         }
 234         else
 235                 cairo_rectangle(c, x, y, w, h);
 236 }
 237
 238