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