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