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         if (!a->visible) return;
  39
  40         size(a);
  41
  42    if (a->redraw) {
  43            a->redraw = 0;
  44            //printf("draw area posx %d, width %d\n", a->posx, a->width);
  45       draw(a, 0);
  46       if (a->use_active)
  47               draw(a, 1);
  48         }
  49
  50         // draw current Area
  51    Pixmap *pmap = (a->is_active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  52    XCopyArea (server.dsp, *pmap, ((Panel *)a->panel)->temp_pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
  53
  54    // and then refresh child object
  55         GSList *l;
  56    for (l = a->list; l ; l = l->next)
  57       refresh(l->data);
  58 }
  59
  60
  61 void size (Area *a)
  62 {
  63         GSList *l;
  64
  65         if (a->resize) {
  66       a->resize = 0;
  67                 for (l = a->list; l ; l = l->next)
  68                         size(l->data);
  69
  70         // resize can generate a redraw
  71            if (a->_resize) {
  72         a->_resize(a);
  73                 }
  74         }
  75 }
  76
  77
  78 void set_redraw (Area *a)
  79 {
  80    a->redraw = 1;
  81
  82    GSList *l;
  83    for (l = a->list ; l ; l = l->next)
  84       set_redraw(l->data);
  85 }
  86
  87
  88 void draw (Area *a, int active)
  89 {
  90    Pixmap *pmap = (active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  91
  92    if (*pmap) XFreePixmap (server.dsp, *pmap);
  93    *pmap = XCreatePixmap (server.dsp, server.root_win, a->width, a->height, server.depth);
  94
  95    // add layer of root pixmap
  96    XCopyArea (server.dsp, ((Panel *)a->panel)->temp_pmap, *pmap, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
  97
  98    cairo_surface_t *cs;
  99    cairo_t *c;
 100
 101    cs = cairo_xlib_surface_create (server.dsp, *pmap, server.visual, a->width, a->height);
 102    c = cairo_create (cs);
 103
 104    draw_background (a, c, active);
 105
 106    if (a->_draw_foreground)
 107       a->_draw_foreground(a, c, active);
 108
 109    cairo_destroy (c);
 110    cairo_surface_destroy (cs);
 111 }
 112
 113
 114 void draw_background (Area *a, cairo_t *c, int active)
 115 {
 116    Pmap *pix = (active == 0) ? (&a->pix) : (&a->pix_active);
 117
 118    if (pix->back.alpha > 0.0) {
 119       //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);
 120       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);
 121       cairo_set_source_rgba(c, pix->back.color[0], pix->back.color[1], pix->back.color[2], pix->back.alpha);
 122
 123       cairo_fill(c);
 124    }
 125
 126    if (pix->border.width > 0 && pix->border.alpha > 0.0) {
 127       cairo_set_line_width (c, pix->border.width);
 128
 129       // draw border inside (x, y, width, height)
 130       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);
 131       /*
 132       // convert : radian = degre * M_PI/180
 133       // définir le dégradé dans un carré de (0,0) (100,100)
 134       // ensuite ce dégradé est extrapolé selon le ratio width/height
 135       // dans repère (0, 0) (100, 100)
 136       double X0, Y0, X1, Y1, degre;
 137       // x = X * (a->width / 100), y = Y * (a->height / 100)
 138       double x0, y0, x1, y1;
 139       X0 = 0;
 140       Y0 = 100;
 141       X1 = 100;
 142       Y1 = 0;
 143       degre = 45;
 144       // et ensuite faire la changement d'unité du repère
 145       // car ce qui doit resté inchangée est les traits et pas la direction
 146
 147       // il faut d'abord appliquer une rotation de 90° (et -180° si l'angle est supérieur à 180°)
 148       // ceci peut être appliqué une fois pour toute au départ
 149       // ensuite calculer l'angle dans le nouveau repère
 150       // puis faire une rotation de 90°
 151       x0 = X0 * ((double)a->width / 100);
 152       x1 = X1 * ((double)a->width / 100);
 153       y0 = Y0 * ((double)a->height / 100);
 154       y1 = Y1 * ((double)a->height / 100);
 155
 156       x0 = X0 * ((double)a->height / 100);
 157       x1 = X1 * ((double)a->height / 100);
 158       y0 = Y0 * ((double)a->width / 100);
 159       y1 = Y1 * ((double)a->width / 100);
 160
 161       cairo_pattern_t *linpat;
 162       linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
 163       cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
 164       cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
 165       cairo_set_source (c, linpat);
 166       */
 167       cairo_set_source_rgba (c, pix->border.color[0], pix->border.color[1], pix->border.color[2], pix->border.alpha);
 168
 169       cairo_stroke (c);
 170       //cairo_pattern_destroy (linpat);
 171    }
 172 }
 173
 174
 175 void remove_area (Area *a)
 176 {
 177    Area *parent = (Area*)a->parent;
 178
 179    parent->list = g_slist_remove(parent->list, a);
 180    set_redraw (parent);
 181
 182 }
 183
 184
 185 void add_area (Area *a)
 186 {
 187    Area *parent = (Area*)a->parent;
 188
 189    parent->list = g_slist_remove(parent->list, a);
 190    set_redraw (parent);
 191
 192 }
 193
 194
 195 void free_area (Area *a)
 196 {
 197    GSList *l0;
 198    for (l0 = a->list; l0 ; l0 = l0->next)
 199       free_area (l0->data);
 200
 201    if (a->list) {
 202       g_slist_free(a->list);
 203       a->list = 0;
 204    }
 205    if (a->pix.pmap) {
 206         XFreePixmap (server.dsp, a->pix.pmap);
 207         a->pix.pmap = 0;
 208         }
 209    if (a->pix_active.pmap) {
 210         XFreePixmap (server.dsp, a->pix_active.pmap);
 211         a->pix_active.pmap = 0;
 212         }
 213 }
 214
 215
 216 void draw_rect(cairo_t *c, double x, double y, double w, double h, double r)
 217 {
 218    if (r > 0.0) {
 219       double c1 = 0.55228475 * r;
 220
 221       cairo_move_to(c, x+r, y);
 222       cairo_rel_line_to(c, w-2*r, 0);
 223       cairo_rel_curve_to(c, c1, 0.0, r, c1, r, r);
 224       cairo_rel_line_to(c, 0, h-2*r);
 225       cairo_rel_curve_to(c, 0.0, c1, c1-r, r, -r, r);
 226       cairo_rel_line_to (c, -w +2*r, 0);
 227       cairo_rel_curve_to (c, -c1, 0, -r, -c1, -r, -r);
 228       cairo_rel_line_to (c, 0, -h + 2 * r);
 229       cairo_rel_curve_to (c, 0, -c1, r - c1, -r, r, -r);
 230    }
 231    else
 232       cairo_rectangle(c, x, y, w, h);
 233 }
 234
 235