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
  33 void refresh (Area *a)
  34 {
  35    if (a->redraw) {
  36       //printf("draw pix\n");
  37       draw(a, 0);
  38       if (a->use_active)
  39               draw(a, 1);
  40            a->redraw = 0;
  41         }
  42
  43         // draw current Area
  44    Pixmap *pmap = (a->is_active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  45    XCopyArea (server.dsp, *pmap, ((Panel *)a->panel)->root_pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
  46
  47    // and then refresh child object
  48    GSList *l = a->list;
  49    for (; l ; l = l->next)
  50       refresh(l->data);
  51 }
  52
  53
  54 void set_redraw (Area *a)
  55 {
  56    a->redraw = 1;
  57
  58    GSList *l;
  59    for (l = a->list ; l ; l = l->next)
  60       set_redraw(l->data);
  61 }
  62
  63
  64 void draw (Area *a, int active)
  65 {
  66    Pixmap *pmap = (active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
  67
  68    //printf("begin draw area\n");
  69    if (*pmap) XFreePixmap (server.dsp, *pmap);
  70    *pmap = XCreatePixmap (server.dsp, server.root_win, a->width, a->height, server.depth);
  71
  72    // add layer of root pixmap
  73    XCopyArea (server.dsp, ((Panel *)a->panel)->root_pmap, *pmap, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
  74
  75    cairo_surface_t *cs;
  76    cairo_t *c;
  77
  78    cs = cairo_xlib_surface_create (server.dsp, *pmap, server.visual, a->width, a->height);
  79    c = cairo_create (cs);
  80
  81    draw_background (a, c, active);
  82
  83    if (a->draw_foreground)
  84       a->draw_foreground(a, c, active);
  85
  86    cairo_destroy (c);
  87    cairo_surface_destroy (cs);
  88 }
  89
  90
  91 void draw_background (Area *a, cairo_t *c, int active)
  92 {
  93    Pmap *pix = (active == 0) ? (&a->pix) : (&a->pix_active);
  94
  95    if (pix->back.alpha > 0.0) {
  96       //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);
  97       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);
  98       cairo_set_source_rgba(c, pix->back.color[0], pix->back.color[1], pix->back.color[2], pix->back.alpha);
  99
 100       cairo_fill(c);
 101    }
 102
 103    if (pix->border.width > 0 && pix->border.alpha > 0.0) {
 104       cairo_set_line_width (c, pix->border.width);
 105
 106       // draw border inside (x, y, width, height)
 107       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);
 108       /*
 109       // convert : radian = degre * M_PI/180
 110       // définir le dégradé dans un carré de (0,0) (100,100)
 111       // ensuite ce dégradé est extrapolé selon le ratio width/height
 112       // dans repère (0, 0) (100, 100)
 113       double X0, Y0, X1, Y1, degre;
 114       // x = X * (a->width / 100), y = Y * (a->height / 100)
 115       double x0, y0, x1, y1;
 116       X0 = 0;
 117       Y0 = 100;
 118       X1 = 100;
 119       Y1 = 0;
 120       degre = 45;
 121       // et ensuite faire la changement d'unité du repère
 122       // car ce qui doit resté inchangée est les traits et pas la direction
 123
 124       // il faut d'abord appliquer une rotation de 90° (et -180° si l'angle est supérieur à 180°)
 125       // ceci peut être appliqué une fois pour toute au départ
 126       // ensuite calculer l'angle dans le nouveau repère
 127       // puis faire une rotation de 90°
 128       x0 = X0 * ((double)a->width / 100);
 129       x1 = X1 * ((double)a->width / 100);
 130       y0 = Y0 * ((double)a->height / 100);
 131       y1 = Y1 * ((double)a->height / 100);
 132
 133       x0 = X0 * ((double)a->height / 100);
 134       x1 = X1 * ((double)a->height / 100);
 135       y0 = Y0 * ((double)a->width / 100);
 136       y1 = Y1 * ((double)a->width / 100);
 137       printf("repère (%d, %d)  points (%lf, %lf) (%lf, %lf)\n", a->width, a->height, x0, y0, x1, y1);
 138
 139       cairo_pattern_t *linpat;
 140       linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
 141       cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
 142       cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
 143       cairo_set_source (c, linpat);
 144       */
 145       cairo_set_source_rgba (c, pix->border.color[0], pix->border.color[1], pix->border.color[2], pix->border.alpha);
 146
 147       cairo_stroke (c);
 148       //cairo_pattern_destroy (linpat);
 149    }
 150 }
 151
 152
 153 void remove_area (Area *a)
 154 {
 155    Area *parent = (Area*)a->parent;
 156
 157    parent->list = g_slist_remove(parent->list, a);
 158    set_redraw (parent);
 159
 160 }
 161
 162
 163 void add_area (Area *a)
 164 {
 165    Area *parent = (Area*)a->parent;
 166
 167    parent->list = g_slist_remove(parent->list, a);
 168    set_redraw (parent);
 169
 170 }
 171
 172
 173 void free_area (Area *a)
 174 {
 175    GSList *l0;
 176    for (l0 = a->list; l0 ; l0 = l0->next)
 177       free_area (l0->data);
 178
 179    if (a->list) {
 180       g_slist_free(a->list);
 181       a->list = 0;
 182    }
 183 }
 184
 185
 186 void draw_rect(cairo_t *c, double x, double y, double w, double h, double r)
 187 {
 188    if (r > 0.0) {
 189       double c1 = 0.55228475 * r;
 190
 191       cairo_move_to(c, x+r, y);
 192       cairo_rel_line_to(c, w-2*r, 0);
 193       cairo_rel_curve_to(c, c1, 0.0, r, c1, r, r);
 194       cairo_rel_line_to(c, 0, h-2*r);
 195       cairo_rel_curve_to(c, 0.0, c1, c1-r, r, -r, r);
 196       cairo_rel_line_to (c, -w +2*r, 0);
 197       cairo_rel_curve_to (c, -c1, 0, -r, -c1, -r, -r);
 198       cairo_rel_line_to (c, 0, -h + 2 * r);
 199       cairo_rel_curve_to (c, 0, -c1, r - c1, -r, r, -r);
 200    }
 201    else
 202       cairo_rectangle(c, x, y, w, h);
 203 }
 204
 205