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