window.c (12678B)
1 /* Copyright 2011-2013 Bert Muennich 2 * 3 * This file is part of sxiv. 4 * 5 * sxiv is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published 7 * by the Free Software Foundation; either version 2 of the License, 8 * or (at your option) any later version. 9 * 10 * sxiv is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with sxiv. If not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #include "sxiv.h" 20 #define _WINDOW_CONFIG 21 #include "config.h" 22 #include "icon/data.h" 23 #include "utf8.h" 24 25 #include <stdlib.h> 26 #include <string.h> 27 #include <locale.h> 28 #include <X11/cursorfont.h> 29 #include <X11/Xatom.h> 30 #include <X11/Xresource.h> 31 32 #define RES_CLASS "Sxiv" 33 34 enum { 35 H_TEXT_PAD = 5, 36 V_TEXT_PAD = 1 37 }; 38 39 static struct { 40 int name; 41 Cursor icon; 42 } cursors[CURSOR_COUNT] = { 43 { XC_left_ptr }, { XC_dotbox }, { XC_watch }, 44 { XC_sb_left_arrow }, { XC_sb_right_arrow } 45 }; 46 47 static GC gc; 48 49 static XftFont *font; 50 static int fontheight; 51 static double fontsize; 52 static int barheight; 53 54 Atom atoms[ATOM_COUNT]; 55 56 void win_init_font(const win_env_t *e, const char *fontstr) 57 { 58 if ((font = XftFontOpenName(e->dpy, e->scr, fontstr)) == NULL) 59 error(EXIT_FAILURE, 0, "Error loading font '%s'", fontstr); 60 fontheight = font->ascent + font->descent; 61 FcPatternGetDouble(font->pattern, FC_SIZE, 0, &fontsize); 62 barheight = fontheight + 2 * V_TEXT_PAD; 63 } 64 65 void win_alloc_color(const win_env_t *e, const char *name, XftColor *col) 66 { 67 if (!XftColorAllocName(e->dpy, DefaultVisual(e->dpy, e->scr), 68 DefaultColormap(e->dpy, e->scr), name, col)) 69 { 70 error(EXIT_FAILURE, 0, "Error allocating color '%s'", name); 71 } 72 } 73 74 const char* win_res(XrmDatabase db, const char *name, const char *def) 75 { 76 char *type; 77 XrmValue ret; 78 79 if (db != None && 80 XrmGetResource(db, name, name, &type, &ret) && 81 STREQ(type, "String")) 82 { 83 return ret.addr; 84 } else { 85 return def; 86 } 87 } 88 89 #define INIT_ATOM_(atom) \ 90 atoms[ATOM_##atom] = XInternAtom(e->dpy, #atom, False); 91 92 void win_init(win_t *win) 93 { 94 win_env_t *e; 95 const char *bg, *fg, *f; 96 char *res_man; 97 XrmDatabase db; 98 99 memset(win, 0, sizeof(win_t)); 100 101 e = &win->env; 102 if ((e->dpy = XOpenDisplay(NULL)) == NULL) 103 error(EXIT_FAILURE, 0, "Error opening X display"); 104 105 e->scr = DefaultScreen(e->dpy); 106 e->scrw = DisplayWidth(e->dpy, e->scr); 107 e->scrh = DisplayHeight(e->dpy, e->scr); 108 e->vis = DefaultVisual(e->dpy, e->scr); 109 e->cmap = DefaultColormap(e->dpy, e->scr); 110 e->depth = DefaultDepth(e->dpy, e->scr); 111 112 if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0) 113 error(0, 0, "No locale support"); 114 115 XrmInitialize(); 116 res_man = XResourceManagerString(e->dpy); 117 db = res_man != NULL ? XrmGetStringDatabase(res_man) : None; 118 119 f = win_res(db, RES_CLASS ".font", "monospace-8"); 120 win_init_font(e, f); 121 122 bg = win_res(db, RES_CLASS ".background", "white"); 123 fg = win_res(db, RES_CLASS ".foreground", "black"); 124 win_alloc_color(e, bg, &win->bg); 125 win_alloc_color(e, fg, &win->fg); 126 127 win->bar.l.size = BAR_L_LEN; 128 win->bar.r.size = BAR_R_LEN; 129 /* 3 padding bytes needed by utf8_decode */ 130 win->bar.l.buf = emalloc(win->bar.l.size + 3); 131 win->bar.l.buf[0] = '\0'; 132 win->bar.r.buf = emalloc(win->bar.r.size + 3); 133 win->bar.r.buf[0] = '\0'; 134 win->bar.h = options->hide_bar ? 0 : barheight; 135 136 INIT_ATOM_(WM_DELETE_WINDOW); 137 INIT_ATOM_(_NET_WM_NAME); 138 INIT_ATOM_(_NET_WM_ICON_NAME); 139 INIT_ATOM_(_NET_WM_ICON); 140 INIT_ATOM_(_NET_WM_STATE); 141 INIT_ATOM_(_NET_WM_STATE_FULLSCREEN); 142 } 143 144 void win_open(win_t *win) 145 { 146 int c, i, j, n; 147 long parent; 148 win_env_t *e; 149 XClassHint classhint; 150 unsigned long *icon_data; 151 XColor col; 152 Cursor *cnone = &cursors[CURSOR_NONE].icon; 153 char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 154 Pixmap none; 155 int gmask; 156 XSizeHints sizehints; 157 158 e = &win->env; 159 parent = options->embed != 0 ? options->embed : RootWindow(e->dpy, e->scr); 160 161 sizehints.flags = PWinGravity; 162 sizehints.win_gravity = NorthWestGravity; 163 164 /* determine window offsets, width & height */ 165 if (options->geometry == NULL) 166 gmask = 0; 167 else 168 gmask = XParseGeometry(options->geometry, &win->x, &win->y, 169 &win->w, &win->h); 170 if ((gmask & WidthValue) != 0) 171 sizehints.flags |= USSize; 172 else 173 win->w = WIN_WIDTH; 174 if ((gmask & HeightValue) != 0) 175 sizehints.flags |= USSize; 176 else 177 win->h = WIN_HEIGHT; 178 if ((gmask & XValue) != 0) { 179 if ((gmask & XNegative) != 0) { 180 win->x += e->scrw - win->w; 181 sizehints.win_gravity = NorthEastGravity; 182 } 183 sizehints.flags |= USPosition; 184 } else { 185 win->x = 0; 186 } 187 if ((gmask & YValue) != 0) { 188 if ((gmask & YNegative) != 0) { 189 win->y += e->scrh - win->h; 190 sizehints.win_gravity = sizehints.win_gravity == NorthEastGravity 191 ? SouthEastGravity : SouthWestGravity; 192 } 193 sizehints.flags |= USPosition; 194 } else { 195 win->y = 0; 196 } 197 198 win->xwin = XCreateWindow(e->dpy, parent, 199 win->x, win->y, win->w, win->h, 0, 200 e->depth, InputOutput, e->vis, 0, NULL); 201 if (win->xwin == None) 202 error(EXIT_FAILURE, 0, "Error creating X window"); 203 204 XSelectInput(e->dpy, win->xwin, 205 ButtonReleaseMask | ButtonPressMask | KeyPressMask | 206 PointerMotionMask | StructureNotifyMask); 207 208 for (i = 0; i < ARRLEN(cursors); i++) { 209 if (i != CURSOR_NONE) 210 cursors[i].icon = XCreateFontCursor(e->dpy, cursors[i].name); 211 } 212 if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black", 213 &col, &col) == 0) 214 { 215 error(EXIT_FAILURE, 0, "Error allocating color 'black'"); 216 } 217 none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8); 218 *cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0); 219 220 gc = XCreateGC(e->dpy, win->xwin, 0, None); 221 222 n = icons[ARRLEN(icons)-1].size; 223 icon_data = emalloc((n * n + 2) * sizeof(*icon_data)); 224 225 for (i = 0; i < ARRLEN(icons); i++) { 226 n = 0; 227 icon_data[n++] = icons[i].size; 228 icon_data[n++] = icons[i].size; 229 230 for (j = 0; j < icons[i].cnt; j++) { 231 for (c = icons[i].data[j] >> 4; c >= 0; c--) 232 icon_data[n++] = icon_colors[icons[i].data[j] & 0x0F]; 233 } 234 XChangeProperty(e->dpy, win->xwin, 235 atoms[ATOM__NET_WM_ICON], XA_CARDINAL, 32, 236 i == 0 ? PropModeReplace : PropModeAppend, 237 (unsigned char *) icon_data, n); 238 } 239 free(icon_data); 240 241 win_set_title(win, "sxiv"); 242 243 classhint.res_class = RES_CLASS; 244 classhint.res_name = options->res_name != NULL ? options->res_name : "sxiv"; 245 XSetClassHint(e->dpy, win->xwin, &classhint); 246 247 XSetWMProtocols(e->dpy, win->xwin, &atoms[ATOM_WM_DELETE_WINDOW], 1); 248 249 sizehints.width = win->w; 250 sizehints.height = win->h; 251 sizehints.x = win->x; 252 sizehints.y = win->y; 253 XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints); 254 255 win->h -= win->bar.h; 256 257 win->buf.w = e->scrw; 258 win->buf.h = e->scrh; 259 win->buf.pm = XCreatePixmap(e->dpy, win->xwin, 260 win->buf.w, win->buf.h, e->depth); 261 XSetForeground(e->dpy, gc, win->bg.pixel); 262 XFillRectangle(e->dpy, win->buf.pm, gc, 0, 0, win->buf.w, win->buf.h); 263 XSetWindowBackgroundPixmap(e->dpy, win->xwin, win->buf.pm); 264 265 XMapWindow(e->dpy, win->xwin); 266 XFlush(e->dpy); 267 268 if (options->fullscreen) 269 win_toggle_fullscreen(win); 270 } 271 272 CLEANUP void win_close(win_t *win) 273 { 274 int i; 275 276 for (i = 0; i < ARRLEN(cursors); i++) 277 XFreeCursor(win->env.dpy, cursors[i].icon); 278 279 XFreeGC(win->env.dpy, gc); 280 281 XDestroyWindow(win->env.dpy, win->xwin); 282 XCloseDisplay(win->env.dpy); 283 } 284 285 bool win_configure(win_t *win, XConfigureEvent *c) 286 { 287 bool changed; 288 289 changed = win->w != c->width || win->h + win->bar.h != c->height; 290 291 win->x = c->x; 292 win->y = c->y; 293 win->w = c->width; 294 win->h = c->height - win->bar.h; 295 win->bw = c->border_width; 296 297 return changed; 298 } 299 300 void win_toggle_fullscreen(win_t *win) 301 { 302 XEvent ev; 303 XClientMessageEvent *cm; 304 305 memset(&ev, 0, sizeof(ev)); 306 ev.type = ClientMessage; 307 308 cm = &ev.xclient; 309 cm->window = win->xwin; 310 cm->message_type = atoms[ATOM__NET_WM_STATE]; 311 cm->format = 32; 312 cm->data.l[0] = 2; // toggle 313 cm->data.l[1] = atoms[ATOM__NET_WM_STATE_FULLSCREEN]; 314 315 XSendEvent(win->env.dpy, DefaultRootWindow(win->env.dpy), False, 316 SubstructureNotifyMask | SubstructureRedirectMask, &ev); 317 } 318 319 void win_toggle_bar(win_t *win) 320 { 321 if (win->bar.h != 0) { 322 win->h += win->bar.h; 323 win->bar.h = 0; 324 } else { 325 win->bar.h = barheight; 326 win->h -= win->bar.h; 327 } 328 } 329 330 void win_clear(win_t *win) 331 { 332 win_env_t *e; 333 334 e = &win->env; 335 336 if (win->w > win->buf.w || win->h + win->bar.h > win->buf.h) { 337 XFreePixmap(e->dpy, win->buf.pm); 338 win->buf.w = MAX(win->buf.w, win->w); 339 win->buf.h = MAX(win->buf.h, win->h + win->bar.h); 340 win->buf.pm = XCreatePixmap(e->dpy, win->xwin, 341 win->buf.w, win->buf.h, e->depth); 342 } 343 XSetForeground(e->dpy, gc, win->bg.pixel); 344 XFillRectangle(e->dpy, win->buf.pm, gc, 0, 0, win->buf.w, win->buf.h); 345 } 346 347 #define TEXTWIDTH(win, text, len) \ 348 win_draw_text(win, NULL, NULL, 0, 0, text, len, 0) 349 350 int win_draw_text(win_t *win, XftDraw *d, const XftColor *color, int x, int y, 351 char *text, int len, int w) 352 { 353 int err, tw = 0; 354 char *t, *next; 355 uint32_t rune; 356 XftFont *f; 357 FcCharSet *fccharset; 358 XGlyphInfo ext; 359 360 for (t = text; t - text < len; t = next) { 361 next = utf8_decode(t, &rune, &err); 362 if (XftCharExists(win->env.dpy, font, rune)) { 363 f = font; 364 } else { /* fallback font */ 365 fccharset = FcCharSetCreate(); 366 FcCharSetAddChar(fccharset, rune); 367 f = XftFontOpen(win->env.dpy, win->env.scr, FC_CHARSET, FcTypeCharSet, 368 fccharset, FC_SCALABLE, FcTypeBool, FcTrue, 369 FC_SIZE, FcTypeDouble, fontsize, NULL); 370 FcCharSetDestroy(fccharset); 371 } 372 XftTextExtentsUtf8(win->env.dpy, f, (XftChar8*)t, next - t, &ext); 373 tw += ext.xOff; 374 if (tw <= w) { 375 XftDrawStringUtf8(d, color, f, x, y, (XftChar8*)t, next - t); 376 x += ext.xOff; 377 } 378 if (f != font) 379 XftFontClose(win->env.dpy, f); 380 } 381 return tw; 382 } 383 384 void win_draw_bar(win_t *win) 385 { 386 int len, x, y, w, tw; 387 win_env_t *e; 388 win_bar_t *l, *r; 389 XftDraw *d; 390 391 if ((l = &win->bar.l)->buf == NULL || (r = &win->bar.r)->buf == NULL) 392 return; 393 394 e = &win->env; 395 y = win->h + font->ascent + V_TEXT_PAD; 396 w = win->w - 2*H_TEXT_PAD; 397 d = XftDrawCreate(e->dpy, win->buf.pm, DefaultVisual(e->dpy, e->scr), 398 DefaultColormap(e->dpy, e->scr)); 399 400 XSetForeground(e->dpy, gc, win->bg.pixel); 401 XFillRectangle(e->dpy, win->buf.pm, gc, 0, win->h, win->w, win->bar.h); 402 403 XSetForeground(e->dpy, gc, win->fg.pixel); 404 XSetBackground(e->dpy, gc, win->bg.pixel); 405 406 if ((len = strlen(r->buf)) > 0) { 407 if ((tw = TEXTWIDTH(win, r->buf, len)) > w) 408 return; 409 x = win->w - tw - H_TEXT_PAD; 410 w -= tw; 411 win_draw_text(win, d, &win->fg, x, y, r->buf, len, tw); 412 } 413 if ((len = strlen(l->buf)) > 0) { 414 x = H_TEXT_PAD; 415 w -= 2 * H_TEXT_PAD; /* gap between left and right parts */ 416 win_draw_text(win, d, &win->fg, x, y, l->buf, len, w); 417 } 418 XftDrawDestroy(d); 419 } 420 421 void win_draw(win_t *win) 422 { 423 if (win->bar.h > 0) 424 win_draw_bar(win); 425 426 XSetWindowBackgroundPixmap(win->env.dpy, win->xwin, win->buf.pm); 427 XClearWindow(win->env.dpy, win->xwin); 428 XFlush(win->env.dpy); 429 } 430 431 void win_draw_rect(win_t *win, int x, int y, int w, int h, bool fill, int lw, 432 unsigned long col) 433 { 434 XGCValues gcval; 435 436 gcval.line_width = lw; 437 gcval.foreground = col; 438 XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval); 439 440 if (fill) 441 XFillRectangle(win->env.dpy, win->buf.pm, gc, x, y, w, h); 442 else 443 XDrawRectangle(win->env.dpy, win->buf.pm, gc, x, y, w, h); 444 } 445 446 void win_set_title(win_t *win, const char *title) 447 { 448 XStoreName(win->env.dpy, win->xwin, title); 449 XSetIconName(win->env.dpy, win->xwin, title); 450 451 XChangeProperty(win->env.dpy, win->xwin, atoms[ATOM__NET_WM_NAME], 452 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8, 453 PropModeReplace, (unsigned char *) title, strlen(title)); 454 XChangeProperty(win->env.dpy, win->xwin, atoms[ATOM__NET_WM_ICON_NAME], 455 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8, 456 PropModeReplace, (unsigned char *) title, strlen(title)); 457 } 458 459 void win_set_cursor(win_t *win, cursor_t cursor) 460 { 461 if (cursor >= 0 && cursor < ARRLEN(cursors)) { 462 XDefineCursor(win->env.dpy, win->xwin, cursors[cursor].icon); 463 XFlush(win->env.dpy); 464 } 465 } 466 467 void win_cursor_pos(win_t *win, int *x, int *y) 468 { 469 int i; 470 unsigned int ui; 471 Window w; 472 473 if (!XQueryPointer(win->env.dpy, win->xwin, &w, &w, &i, &i, x, y, &ui)) 474 *x = *y = 0; 475 } 476