498 lines
12 KiB
C
498 lines
12 KiB
C
/* sxiv: window.c
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* Copyright (c) 2012 Bert Muennich <be.muennich at googlemail.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#define _POSIX_C_SOURCE 200112L
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#define _WINDOW_CONFIG
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#include <string.h>
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#include <locale.h>
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#include <X11/Xutil.h>
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#include <X11/cursorfont.h>
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#include "options.h"
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#include "util.h"
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#include "window.h"
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#include "config.h"
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enum {
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H_TEXT_PAD = 5,
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V_TEXT_PAD = 1
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};
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static Cursor carrow;
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static Cursor cnone;
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static Cursor chand;
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static Cursor cwatch;
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static GC gc;
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Atom wm_delete_win;
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struct {
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int ascent;
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int descent;
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XFontStruct *xfont;
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XFontSet set;
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} font;
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void win_init_font(Display *dpy, const char *fontstr) {
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int n;
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char *def, **missing;
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font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
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if (missing)
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XFreeStringList(missing);
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if (font.set) {
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XFontStruct **xfonts;
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char **font_names;
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font.ascent = font.descent = 0;
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XExtentsOfFontSet(font.set);
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n = XFontsOfFontSet(font.set, &xfonts, &font_names);
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while (n--) {
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font.ascent = MAX(font.ascent, (*xfonts)->ascent);
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font.descent = MAX(font.descent,(*xfonts)->descent);
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xfonts++;
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}
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} else {
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if ((font.xfont = XLoadQueryFont(dpy, fontstr)) == NULL &&
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(font.xfont = XLoadQueryFont(dpy, "fixed")) == NULL)
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{
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die("could not load font: %s", fontstr);
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}
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font.ascent = font.xfont->ascent;
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font.descent = font.xfont->descent;
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}
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}
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unsigned long win_alloc_color(win_t *win, const char *name) {
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XColor col;
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if (win == NULL)
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return 0UL;
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if (XAllocNamedColor(win->env.dpy,
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DefaultColormap(win->env.dpy, win->env.scr),
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name, &col, &col) == 0)
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{
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die("could not allocate color: %s", name);
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}
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return col.pixel;
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}
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void win_init(win_t *win) {
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win_env_t *e;
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if (win == NULL)
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return;
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e = &win->env;
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if ((e->dpy = XOpenDisplay(NULL)) == NULL)
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die("could not open display");
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e->scr = DefaultScreen(e->dpy);
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e->scrw = DisplayWidth(e->dpy, e->scr);
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e->scrh = DisplayHeight(e->dpy, e->scr);
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e->vis = DefaultVisual(e->dpy, e->scr);
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e->cmap = DefaultColormap(e->dpy, e->scr);
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e->depth = DefaultDepth(e->dpy, e->scr);
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win->white = WhitePixel(e->dpy, e->scr);
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win->bgcol = win_alloc_color(win, WIN_BG_COLOR);
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win->fscol = win_alloc_color(win, WIN_FS_COLOR);
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win->selcol = win_alloc_color(win, SEL_COLOR);
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win->barbgcol = win_alloc_color(win, BAR_BG_COLOR);
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win->barfgcol = win_alloc_color(win, BAR_FG_COLOR);
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win->xwin = 0;
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win->pm = 0;
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win->fullscreen = false;
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win->barh = 0;
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win->lbar = NULL;
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win->rbar = NULL;
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if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0)
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warn("no locale support");
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win_init_font(e->dpy, BAR_FONT);
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wm_delete_win = XInternAtom(e->dpy, "WM_DELETE_WINDOW", False);
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}
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void win_set_sizehints(win_t *win) {
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XSizeHints sizehints;
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if (win == NULL || win->xwin == None)
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return;
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sizehints.flags = PMinSize | PMaxSize;
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sizehints.min_width = win->w;
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sizehints.max_width = win->w;
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sizehints.min_height = win->h + win->barh;
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sizehints.max_height = win->h + win->barh;
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XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
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}
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void win_open(win_t *win) {
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win_env_t *e;
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XClassHint classhint;
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XColor col;
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char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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Pixmap none;
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int gmask;
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if (win == NULL)
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return;
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e = &win->env;
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/* determine window offsets, width & height */
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if (options->geometry == NULL)
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gmask = 0;
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else
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gmask = XParseGeometry(options->geometry, &win->x, &win->y,
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&win->w, &win->h);
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if ((gmask & WidthValue) == 0)
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win->w = WIN_WIDTH;
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if (win->w > e->scrw)
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win->w = e->scrw;
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if ((gmask & HeightValue) == 0)
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win->h = WIN_HEIGHT;
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if (win->h > e->scrh)
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win->h = e->scrh;
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if ((gmask & XValue) == 0)
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win->x = (e->scrw - win->w) / 2;
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else if ((gmask & XNegative) != 0)
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win->x += e->scrw - win->w;
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if ((gmask & YValue) == 0)
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win->y = (e->scrh - win->h) / 2;
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else if ((gmask & YNegative) != 0)
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win->y += e->scrh - win->h;
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win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
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win->x, win->y, win->w, win->h, 0,
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e->depth, InputOutput, e->vis, 0, None);
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if (win->xwin == None)
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die("could not create window");
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XSelectInput(e->dpy, win->xwin,
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ExposureMask | ButtonReleaseMask | ButtonPressMask |
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KeyPressMask | PointerMotionMask | StructureNotifyMask);
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carrow = XCreateFontCursor(e->dpy, XC_left_ptr);
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chand = XCreateFontCursor(e->dpy, XC_fleur);
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cwatch = XCreateFontCursor(e->dpy, XC_watch);
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if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
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&col, &col) == 0)
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{
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die("could not allocate color: black");
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}
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none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8);
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cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0);
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gc = XCreateGC(e->dpy, win->xwin, 0, None);
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win_set_title(win, "sxiv");
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classhint.res_class = "Sxiv";
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classhint.res_name = options->res_name != NULL ? options->res_name : "sxiv";
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XSetClassHint(e->dpy, win->xwin, &classhint);
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XSetWMProtocols(e->dpy, win->xwin, &wm_delete_win, 1);
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if (!options->hide_bar) {
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win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
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win->h -= win->barh;
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}
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if (options->fixed_win)
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win_set_sizehints(win);
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XMapWindow(e->dpy, win->xwin);
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XFlush(e->dpy);
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if (options->fullscreen)
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win_toggle_fullscreen(win);
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}
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void win_close(win_t *win) {
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if (win == NULL || win->xwin == None)
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return;
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XFreeCursor(win->env.dpy, carrow);
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XFreeCursor(win->env.dpy, cnone);
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XFreeCursor(win->env.dpy, chand);
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XFreeCursor(win->env.dpy, cwatch);
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XFreeGC(win->env.dpy, gc);
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XDestroyWindow(win->env.dpy, win->xwin);
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XCloseDisplay(win->env.dpy);
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}
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bool win_configure(win_t *win, XConfigureEvent *c) {
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bool changed;
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if (win == NULL || c == NULL)
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return false;
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if ((changed = win->w != c->width || win->h + win->barh != c->height)) {
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if (win->pm != None) {
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XFreePixmap(win->env.dpy, win->pm);
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win->pm = None;
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}
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}
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win->x = c->x;
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win->y = c->y;
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win->w = c->width;
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win->h = c->height - win->barh;
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win->bw = c->border_width;
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return changed;
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}
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void win_expose(win_t *win, XExposeEvent *e) {
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if (win == NULL || win->xwin == None || win->pm == None || e == NULL)
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return;
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XCopyArea(win->env.dpy, win->pm, win->xwin, gc,
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e->x, e->y, e->width, e->height, e->x, e->y);
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}
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bool win_moveresize(win_t *win, int x, int y, unsigned int w, unsigned int h) {
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if (win == NULL || win->xwin == None)
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return false;
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x = MAX(0, x);
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y = MAX(0, y);
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w = MIN(w, win->env.scrw - 2 * win->bw);
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h = MIN(h, win->env.scrh - 2 * win->bw);
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if (win->x == x && win->y == y && win->w == w && win->h + win->barh == h)
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return false;
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win->x = x;
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win->y = y;
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win->w = w;
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win->h = h - win->barh;
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if (options->fixed_win)
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win_set_sizehints(win);
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XMoveResizeWindow(win->env.dpy, win->xwin, x, y, w, h);
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return true;
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}
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void win_toggle_fullscreen(win_t *win) {
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XEvent ev;
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XClientMessageEvent *cm;
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if (win == NULL || win->xwin == None)
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return;
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win->fullscreen = !win->fullscreen;
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memset(&ev, 0, sizeof(ev));
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ev.type = ClientMessage;
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cm = &ev.xclient;
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cm->window = win->xwin;
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cm->message_type = XInternAtom(win->env.dpy, "_NET_WM_STATE", False);
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cm->format = 32;
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cm->data.l[0] = win->fullscreen;
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cm->data.l[1] = XInternAtom(win->env.dpy, "_NET_WM_STATE_FULLSCREEN", False);
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cm->data.l[2] = cm->data.l[3] = 0;
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XSendEvent(win->env.dpy, DefaultRootWindow(win->env.dpy), False,
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SubstructureNotifyMask | SubstructureRedirectMask, &ev);
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}
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void win_toggle_bar(win_t *win) {
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if (win == NULL || win->xwin == None)
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return;
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if (win->barh != 0) {
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win->h += win->barh;
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win->barh = 0;
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} else {
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win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
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win->h -= win->barh;
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}
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}
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void win_clear(win_t *win) {
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int h;
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win_env_t *e;
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if (win == NULL || win->xwin == None)
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return;
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h = win->h + win->barh;
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e = &win->env;
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if (win->pm == None)
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win->pm = XCreatePixmap(e->dpy, win->xwin, win->w, h, e->depth);
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XSetForeground(e->dpy, gc, win->fullscreen ? win->fscol : win->bgcol);
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XFillRectangle(e->dpy, win->pm, gc, 0, 0, win->w, h);
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}
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void win_draw_bar(win_t *win) {
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win_env_t *e;
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int len, x, y, w, tw = 0, seplen;
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const char *rt;
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if (win == NULL || win->xwin == None || win->pm == None)
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return;
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e = &win->env;
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x = H_TEXT_PAD;
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y = win->h + font.ascent + V_TEXT_PAD;
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w = win->w - 2 * H_TEXT_PAD;
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XSetForeground(e->dpy, gc, win->barbgcol);
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XFillRectangle(e->dpy, win->pm, gc, 0, win->h, win->w, win->barh);
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XSetForeground(e->dpy, gc, win->barfgcol);
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XSetBackground(e->dpy, gc, win->barbgcol);
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if (win->lbar != NULL) {
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len = strlen(win->lbar);
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while (len > 0 && (tw = win_textwidth(win->lbar, len, false)) > w)
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len--;
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w -= tw + 2 * H_TEXT_PAD;
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if (font.set)
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XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, win->lbar, len);
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else
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XDrawString(e->dpy, win->pm, gc, x, y, win->lbar, len);
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}
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if (win->rbar != NULL) {
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len = strlen(win->rbar);
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seplen = strlen(BAR_SEPARATOR);
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rt = win->rbar;
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while (len > 0 && (tw = win_textwidth(rt, len, false)) > w) {
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rt = strstr(rt, BAR_SEPARATOR);
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if (rt != NULL) {
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rt += seplen;
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len = strlen(rt);
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} else {
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len = 0;
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}
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}
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if (len > 0) {
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x = win->w - tw - H_TEXT_PAD;
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if (font.set)
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XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, rt, len);
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else
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XDrawString(e->dpy, win->pm, gc, x, y, rt, len);
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}
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}
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}
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void win_draw(win_t *win) {
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if (win == NULL || win->xwin == None || win->pm == None)
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return;
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if (win->barh > 0)
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win_draw_bar(win);
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XCopyArea(win->env.dpy, win->pm, win->xwin, gc,
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0, 0, win->w, win->h + win->barh, 0, 0);
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}
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void win_draw_rect(win_t *win, Pixmap pm, int x, int y, int w, int h,
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bool fill, int lw, unsigned long col)
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{
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XGCValues gcval;
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if (win == NULL || pm == None)
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return;
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gcval.line_width = lw;
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gcval.foreground = col;
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XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval);
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if (fill)
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XFillRectangle(win->env.dpy, pm, gc, x, y, w, h);
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else
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XDrawRectangle(win->env.dpy, pm, gc, x, y, w, h);
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}
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int win_textwidth(const char *text, unsigned int len, bool with_padding) {
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XRectangle r;
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int padding = with_padding ? 2 * H_TEXT_PAD : 0;
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if (font.set) {
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XmbTextExtents(font.set, text, len, NULL, &r);
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return r.width + padding;
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} else {
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return XTextWidth(font.xfont, text, len) + padding;
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}
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}
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void win_set_title(win_t *win, const char *title) {
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if (win == NULL || win->xwin == None)
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return;
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if (title == NULL)
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title = "sxiv";
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XStoreName(win->env.dpy, win->xwin, title);
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XSetIconName(win->env.dpy, win->xwin, title);
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XChangeProperty(win->env.dpy, win->xwin,
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XInternAtom(win->env.dpy, "_NET_WM_NAME", False),
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XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
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PropModeReplace, (unsigned char *) title, strlen(title));
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XChangeProperty(win->env.dpy, win->xwin,
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XInternAtom(win->env.dpy, "_NET_WM_ICON_NAME", False),
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XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
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PropModeReplace, (unsigned char *) title, strlen(title));
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}
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void win_set_bar_info(win_t *win, const char *li, const char *ri) {
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if (win != NULL) {
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win->lbar = li;
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win->rbar = ri;
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}
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}
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void win_set_cursor(win_t *win, cursor_t cursor) {
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if (win == NULL || win->xwin == None)
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return;
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switch (cursor) {
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case CURSOR_NONE:
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XDefineCursor(win->env.dpy, win->xwin, cnone);
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break;
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case CURSOR_HAND:
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XDefineCursor(win->env.dpy, win->xwin, chand);
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break;
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case CURSOR_WATCH:
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XDefineCursor(win->env.dpy, win->xwin, cwatch);
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break;
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case CURSOR_ARROW:
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default:
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XDefineCursor(win->env.dpy, win->xwin, carrow);
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break;
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}
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XFlush(win->env.dpy);
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}
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