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 <glib.h>
  27
  28 #include "window.h"
  29 #include "server.h"
  30 #include "area.h"
  31
  32
  33 void refresh (Area *a)
  34 {
  35    if (a->redraw) {
  36       if (a->draw)
  37          a->draw(a);
  38       else
  39          draw(a);
  40    }
  41
  42    XCopyArea (server.dsp, a->pmap, server.pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
  43
  44    GSList *l = a->list;
  45    // refresh child object (after refreshing parent)
  46    for (; l ; l = l->next)
  47       refresh(l->data);
  48
  49    //printf("end refresh area\n");
  50 }
  51
  52
  53 void set_redraw (Area *a)
  54 {
  55    a->redraw = 1;
  56
  57    GSList *l;
  58    for (l = a->list ; l ; l = l->next)
  59       set_redraw(l->data);
  60 }
  61
  62
  63 void draw (Area *a)
  64 {
  65    cairo_surface_t *cs;
  66    cairo_t *c;
  67
  68    //printf("begin draw area\n");
  69    if (a->pmap) XFreePixmap (server.dsp, a->pmap);
  70    a->pmap = server_create_pixmap (a->width, a->height);
  71
  72    // add layer of root pixmap
  73    XCopyArea (server.dsp, server.pmap, a->pmap, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
  74
  75    cs = cairo_xlib_surface_create (server.dsp, a->pmap, server.visual, a->width, a->height);
  76    c = cairo_create (cs);
  77
  78    draw_background (a, c);
  79
  80    if (a->draw_foreground)
  81       a->draw_foreground(a, c);
  82
  83    cairo_destroy (c);
  84    cairo_surface_destroy (cs);
  85    a->redraw = 0;
  86 }
  87
  88
  89 void draw_background (Area *a, cairo_t *c)
  90 {
  91    if (a->back.alpha > 0.0) {
  92       //printf("   draw_background %d %d\n", a->width, a->height);
  93       draw_rect(c, a->border.width, a->border.width, a->width-(2.0 * a->border.width), a->height-(2.0*a->border.width), a->border.rounded - a->border.width/1.571);
  94       cairo_set_source_rgba(c, a->back.color[0], a->back.color[1], a->back.color[2], a->back.alpha);
  95
  96       cairo_fill(c);
  97    }
  98
  99    if (a->border.width > 0 && a->border.alpha > 0.0) {
 100       cairo_set_line_width (c, a->border.width);
 101
 102       // draw border inside (x, y, width, height)
 103       draw_rect(c, a->border.width/2.0, a->border.width/2.0, a->width - a->border.width, a->height - a->border.width, a->border.rounded);
 104       /*
 105       // convert : radian = degre * M_PI/180
 106       // définir le dégradé dans un carré de (0,0) (100,100)
 107       // ensuite ce dégradé est extrapolé selon le ratio width/height
 108       // dans repère (0, 0) (100, 100)
 109       double X0, Y0, X1, Y1, degre;
 110       // x = X * (a->width / 100), y = Y * (a->height / 100)
 111       double x0, y0, x1, y1;
 112       X0 = 0;
 113       Y0 = 100;
 114       X1 = 100;
 115       Y1 = 0;
 116       degre = 45;
 117       // et ensuite faire la changement d'unité du repère
 118       // car ce qui doit resté inchangée est les traits et pas la direction
 119
 120       // il faut d'abord appliquer une rotation de 90° (et -180° si l'angle est supérieur à 180°)
 121       // ceci peut être appliqué une fois pour toute au départ
 122       // ensuite calculer l'angle dans le nouveau repère
 123       // puis faire une rotation de 90°
 124       x0 = X0 * ((double)a->width / 100);
 125       x1 = X1 * ((double)a->width / 100);
 126       y0 = Y0 * ((double)a->height / 100);
 127       y1 = Y1 * ((double)a->height / 100);
 128
 129       x0 = X0 * ((double)a->height / 100);
 130       x1 = X1 * ((double)a->height / 100);
 131       y0 = Y0 * ((double)a->width / 100);
 132       y1 = Y1 * ((double)a->width / 100);
 133       printf("repère (%d, %d)  points (%lf, %lf) (%lf, %lf)\n", a->width, a->height, x0, y0, x1, y1);
 134
 135       cairo_pattern_t *linpat;
 136       linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
 137       cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
 138       cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
 139       cairo_set_source (c, linpat);
 140       */
 141       cairo_set_source_rgba (c, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
 142
 143       cairo_stroke (c);
 144       //cairo_pattern_destroy (linpat);
 145    }
 146 }
 147
 148
 149 void remove_area (Area *a)
 150 {
 151    Area *parent;
 152
 153    parent = (Area*)a->parent;
 154    parent->list = g_slist_remove(parent->list, a);
 155    set_redraw (parent);
 156
 157 }
 158
 159
 160 void add_area (Area *a)
 161 {
 162    Area *parent;
 163
 164    parent = (Area*)a->parent;
 165    parent->list = g_slist_remove(parent->list, a);
 166    set_redraw (parent);
 167
 168 }
 169
 170
 171 void free_area (Area *a)
 172 {
 173    GSList *l0;
 174    for (l0 = a->list; l0 ; l0 = l0->next)
 175       free_area (l0->data);
 176
 177    if (a->list) {
 178       g_slist_free(a->list);
 179       a->list = 0;
 180    }
 181 }
 182