swindow.c

   1 /*
   2  * swindow.c - simple window handling functions
   3  *
   4  * Copyright © 2008 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  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  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include <math.h>
  23
  24 #include <xcb/xcb.h>
  25
  26 #include "structs.h"
  27 #include "swindow.h"
  28 #include "draw.h"
  29 #include "common/xutil.h"
  30
  31 extern awesome_t globalconf;
  32
  33 static void
  34 simplewindow_draw_context_update(simple_window_t *sw, xcb_screen_t *s)
  35 {
  36     xcolor_t fg = sw->ctx.fg, bg = sw->ctx.bg;
  37     int phys_screen = sw->ctx.phys_screen;
  38
  39     draw_context_wipe(&sw->ctx);
  40
  41     /* update draw context */
  42     switch(sw->orientation)
  43     {
  44       case South:
  45       case North:
  46         /* we need a new pixmap this way [     ] to render */
  47         sw->ctx.pixmap = xcb_generate_id(globalconf.connection);
  48         xcb_create_pixmap(globalconf.connection,
  49                           s->root_depth,
  50                           sw->ctx.pixmap, s->root,
  51                           sw->geometry.height, sw->geometry.width);
  52         draw_context_init(&sw->ctx, phys_screen,
  53                           sw->geometry.height, sw->geometry.width,
  54                           sw->ctx.pixmap, &fg, &bg);
  55         break;
  56       case East:
  57         draw_context_init(&sw->ctx, phys_screen,
  58                           sw->geometry.width, sw->geometry.height,
  59                           sw->pixmap, &fg, &bg);
  60         break;
  61     }
  62 }
  63
  64 /** Initialize a simple window.
  65  * \param sw The simple window to initialize.
  66  * \param phys_screen Physical screen number.
  67  * \param geometry Window geometry.
  68  * \param border_width Window border width.
  69  * \param orientation The rendering orientation.
  70  * \param bg Default foreground color.
  71  * \param bg Default background color.
  72  */
  73 void
  74 simplewindow_init(simple_window_t *sw,
  75                   int phys_screen,
  76                   area_t geometry,
  77                   uint16_t border_width,
  78                   orientation_t orientation,
  79                   const xcolor_t *fg, const xcolor_t *bg)
  80 {
  81     xcb_screen_t *s = xutil_screen_get(globalconf.connection, phys_screen);
  82     uint32_t create_win_val[3];
  83     const uint32_t gc_mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND;
  84     const uint32_t gc_values[2] = { s->black_pixel, s->white_pixel };
  85
  86     sw->geometry.x = geometry.x;
  87     sw->geometry.y = geometry.y;
  88     sw->geometry.width = geometry.width;
  89     sw->geometry.height = geometry.height;
  90     sw->border.width = border_width;
  91     sw->orientation = orientation;
  92     sw->ctx.fg = *fg;
  93     sw->ctx.bg = *bg;
  94
  95     create_win_val[0] = XCB_BACK_PIXMAP_PARENT_RELATIVE;
  96     create_win_val[1] = 1;
  97     create_win_val[2] = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
  98         | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_ENTER_WINDOW
  99         | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 100         | XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
 101         | XCB_EVENT_MASK_POINTER_MOTION | XCB_EVENT_MASK_EXPOSURE;
 102
 103     sw->window = xcb_generate_id(globalconf.connection);
 104     xcb_create_window(globalconf.connection, s->root_depth, sw->window, s->root,
 105                       geometry.x, geometry.y, geometry.width, geometry.height,
 106                       border_width, XCB_COPY_FROM_PARENT, s->root_visual,
 107                       XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK,
 108                       create_win_val);
 109
 110     sw->pixmap = xcb_generate_id(globalconf.connection);
 111     xcb_create_pixmap(globalconf.connection, s->root_depth, sw->pixmap, s->root,
 112                       geometry.width, geometry.height);
 113
 114     simplewindow_draw_context_update(sw, s);
 115
 116     /* The default GC is just a newly created associated to the root window */
 117     sw->gc = xcb_generate_id(globalconf.connection);
 118     xcb_create_gc(globalconf.connection, sw->gc, s->root, gc_mask, gc_values);
 119 }
 120
 121 /** Destroy all resources of a simple window.
 122  * \param sw The simple_window_t to wipe.
 123  */
 124 void
 125 simplewindow_wipe(simple_window_t *sw)
 126 {
 127     if(sw->window)
 128     {
 129         xcb_destroy_window(globalconf.connection, sw->window);
 130         sw->window = XCB_NONE;
 131     }
 132     if(sw->pixmap)
 133     {
 134         xcb_free_pixmap(globalconf.connection, sw->pixmap);
 135         sw->pixmap = XCB_NONE;
 136     }
 137     if(sw->gc)
 138     {
 139         xcb_free_gc(globalconf.connection, sw->gc);
 140         sw->gc = XCB_NONE;
 141     }
 142     draw_context_wipe(&sw->ctx);
 143 }
 144
 145 /** Move a simple window.
 146  * \param sw The simple window to move.
 147  * \param x New x coordinate.
 148  * \param y New y coordinate.
 149  */
 150 void
 151 simplewindow_move(simple_window_t *sw, int x, int y)
 152 {
 153     const uint32_t move_win_vals[] = { x, y };
 154
 155     if(x != sw->geometry.x || y != sw->geometry.y)
 156     {
 157         sw->geometry.x = x;
 158         sw->geometry.y = y;
 159         xcb_configure_window(globalconf.connection, sw->window,
 160                              XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y,
 161                              move_win_vals);
 162     }
 163 }
 164
 165 /** Resize a simple window.
 166  * \param sw The simple_window_t to resize.
 167  * \param w New width.
 168  * \param h New height.
 169  */
 170 void
 171 simplewindow_resize(simple_window_t *sw, int w, int h)
 172 {
 173     if(w > 0 && h > 0 && (sw->geometry.width != w || sw->geometry.height != h))
 174     {
 175         xcb_screen_t *s = xutil_screen_get(globalconf.connection, sw->ctx.phys_screen);
 176         uint32_t resize_win_vals[2];
 177
 178         sw->geometry.width = resize_win_vals[0] = w;
 179         sw->geometry.height = resize_win_vals[1] = h;
 180         xcb_free_pixmap(globalconf.connection, sw->pixmap);
 181         /* orientation != East */
 182         if(sw->pixmap != sw->ctx.pixmap)
 183             xcb_free_pixmap(globalconf.connection, sw->ctx.pixmap);
 184         sw->pixmap = xcb_generate_id(globalconf.connection);
 185         xcb_create_pixmap(globalconf.connection, s->root_depth, sw->pixmap, s->root, w, h);
 186         xcb_configure_window(globalconf.connection, sw->window,
 187                              XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
 188                              resize_win_vals);
 189         simplewindow_draw_context_update(sw, s);
 190     }
 191 }
 192
 193 /** Move and resize a window in one call.
 194  * \param sw The simple window to move and resize.
 195  * \param geom The new gometry.
 196  */
 197 void
 198 simplewindow_moveresize(simple_window_t *sw, area_t geom)
 199 {
 200     uint32_t moveresize_win_vals[4], mask_vals = 0;
 201     xcb_screen_t *s = xutil_screen_get(globalconf.connection, sw->ctx.phys_screen);
 202
 203     if(sw->geometry.x != geom.x || sw->geometry.y != geom.y)
 204     {
 205         sw->geometry.x = moveresize_win_vals[0] = geom.x;
 206         sw->geometry.y = moveresize_win_vals[1] = geom.y;
 207         mask_vals |= XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y;
 208     }
 209
 210     if(sw->geometry.width != geom.width || sw->geometry.height != geom.height)
 211     {
 212         if(mask_vals)
 213         {
 214             sw->geometry.width = moveresize_win_vals[2] = geom.width;
 215             sw->geometry.height = moveresize_win_vals[3] = geom.height;
 216         }
 217         else
 218         {
 219             sw->geometry.width = moveresize_win_vals[0] = geom.width;
 220             sw->geometry.height = moveresize_win_vals[1] = geom.height;
 221         }
 222         mask_vals |= XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
 223         xcb_free_pixmap(globalconf.connection, sw->pixmap);
 224         /* orientation != East */
 225         if(sw->pixmap != sw->ctx.pixmap)
 226             xcb_free_pixmap(globalconf.connection, sw->ctx.pixmap);
 227         sw->pixmap = xcb_generate_id(globalconf.connection);
 228         xcb_create_pixmap(globalconf.connection, s->root_depth, sw->pixmap, s->root, geom.width, geom.height);
 229         simplewindow_draw_context_update(sw, s);
 230     }
 231
 232     xcb_configure_window(globalconf.connection, sw->window, mask_vals, moveresize_win_vals);
 233 }
 234
 235 /** Refresh the window content by copying its pixmap data to its window.
 236  * \param sw The simple window to refresh.
 237  */
 238 void
 239 simplewindow_refresh_pixmap_partial(simple_window_t *sw,
 240                                     int16_t x, int16_t y,
 241                                     uint16_t w, uint16_t h)
 242 {
 243     xcb_copy_area(globalconf.connection, sw->pixmap,
 244                   sw->window, sw->gc, x, y, x, y,
 245                   w, h);
 246 }
 247
 248 /** Set a simple window border width.
 249  * \param sw The simple window to change border width.
 250  * \param border_width The border width in pixel.
 251  */
 252 void
 253 simplewindow_border_width_set(simple_window_t *sw, uint32_t border_width)
 254 {
 255     xcb_configure_window(globalconf.connection, sw->window, XCB_CONFIG_WINDOW_BORDER_WIDTH,
 256                          &border_width);
 257     sw->border.width = border_width;
 258 }
 259
 260 /** Set a simple window border color.
 261  * \param sw The simple window to change border width.
 262  * \param color The border color.
 263  */
 264 void
 265 simplewindow_border_color_set(simple_window_t *sw, const xcolor_t *color)
 266 {
 267     xcb_change_window_attributes(globalconf.connection, sw->window,
 268                                  XCB_CW_BORDER_PIXEL, &color->pixel);
 269     sw->border.color = *color;
 270 }
 271
 272 /** Set simple window orientation.
 273  * \param sw The simple window.
 274  * \param o The new orientation
 275  */
 276 void
 277 simplewindow_orientation_set(simple_window_t *sw, orientation_t o)
 278 {
 279     if(o != sw->orientation)
 280     {
 281         xcb_screen_t *s = xutil_screen_get(globalconf.connection, sw->ctx.phys_screen);
 282         sw->orientation = o;
 283         /* orientation != East */
 284         if(sw->pixmap != sw->ctx.pixmap)
 285             xcb_free_pixmap(globalconf.connection, sw->ctx.pixmap);
 286         simplewindow_draw_context_update(sw, s);
 287     }
 288 }
 289
 290 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80