nsxiv/window.c
Bert Münnich c33f2ad355 Corrected & refactored handling of window bar content...
Old snprintf calls could have overflowed the buffers.
2014-10-01 22:35:22 +02:00

560 lines
14 KiB
C

/* Copyright 2011-2013 Bert Muennich
*
* This file is part of sxiv.
*
* sxiv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* sxiv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with sxiv. If not, see <http://www.gnu.org/licenses/>.
*/
#define _POSIX_C_SOURCE 200112L
#define _WINDOW_CONFIG
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <X11/cursorfont.h>
#include <X11/Xatom.h>
#include "options.h"
#include "util.h"
#include "window.h"
#include "config.h"
#include "icon/data.h"
enum {
H_TEXT_PAD = 5,
V_TEXT_PAD = 1
};
static Cursor carrow;
static Cursor cnone;
static Cursor chand;
static Cursor cwatch;
static GC gc;
static struct {
int ascent;
int descent;
XFontStruct *xfont;
XFontSet set;
} font;
static int fontheight;
static int barheight;
Atom atoms[ATOM_COUNT];
static Bool fs_support;
static Bool fs_warned;
void win_init_font(Display *dpy, const char *fontstr)
{
int n;
char *def, **missing;
font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
if (missing)
XFreeStringList(missing);
if (font.set) {
XFontStruct **xfonts;
char **font_names;
font.ascent = font.descent = 0;
XExtentsOfFontSet(font.set);
n = XFontsOfFontSet(font.set, &xfonts, &font_names);
while (n--) {
font.ascent = MAX(font.ascent, (*xfonts)->ascent);
font.descent = MAX(font.descent,(*xfonts)->descent);
xfonts++;
}
} else {
if ((font.xfont = XLoadQueryFont(dpy, fontstr)) == NULL &&
(font.xfont = XLoadQueryFont(dpy, "fixed")) == NULL)
{
die("could not load font: %s", fontstr);
}
font.ascent = font.xfont->ascent;
font.descent = font.xfont->descent;
}
fontheight = font.ascent + font.descent;
barheight = fontheight + 2 * V_TEXT_PAD;
}
unsigned long win_alloc_color(win_t *win, const char *name)
{
XColor col;
if (win == NULL)
return 0UL;
if (XAllocNamedColor(win->env.dpy,
DefaultColormap(win->env.dpy, win->env.scr),
name, &col, &col) == 0)
{
die("could not allocate color: %s", name);
}
return col.pixel;
}
void win_check_wm_support(Display *dpy, Window root)
{
int format;
long offset = 0, length = 16;
Atom *data, type;
unsigned long i, nitems, bytes_left;
Bool found = False;
while (!found && length > 0) {
if (XGetWindowProperty(dpy, root, atoms[ATOM__NET_SUPPORTED],
offset, length, False, XA_ATOM, &type, &format,
&nitems, &bytes_left, (unsigned char**) &data))
{
break;
}
if (type == XA_ATOM && format == 32) {
for (i = 0; i < nitems; i++) {
if (data[i] == atoms[ATOM__NET_WM_STATE_FULLSCREEN]) {
found = True;
fs_support = True;
break;
}
}
}
XFree(data);
offset += nitems;
length = MIN(length, bytes_left / 4);
}
}
#define INIT_ATOM_(atom) \
atoms[ATOM_##atom] = XInternAtom(e->dpy, #atom, False);
void win_init(win_t *win)
{
win_env_t *e;
if (win == NULL)
return;
memset(win, 0, sizeof(win_t));
e = &win->env;
if ((e->dpy = XOpenDisplay(NULL)) == NULL)
die("could not open display");
e->scr = DefaultScreen(e->dpy);
e->scrw = DisplayWidth(e->dpy, e->scr);
e->scrh = DisplayHeight(e->dpy, e->scr);
e->vis = DefaultVisual(e->dpy, e->scr);
e->cmap = DefaultColormap(e->dpy, e->scr);
e->depth = DefaultDepth(e->dpy, e->scr);
if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0)
warn("no locale support");
win_init_font(e->dpy, BAR_FONT);
win->bgcol = win_alloc_color(win, WIN_BG_COLOR);
win->fscol = win_alloc_color(win, WIN_FS_COLOR);
win->selcol = win_alloc_color(win, SEL_COLOR);
win->bar.bgcol = win_alloc_color(win, BAR_BG_COLOR);
win->bar.fgcol = win_alloc_color(win, BAR_FG_COLOR);
win->bar.l.size = BAR_L_LEN;
win->bar.r.size = BAR_R_LEN;
win->bar.l.buf = s_malloc(win->bar.l.size);
win->bar.r.buf = s_malloc(win->bar.r.size);
win->bar.h = options->hide_bar ? 0 : barheight;
INIT_ATOM_(WM_DELETE_WINDOW);
INIT_ATOM_(_NET_WM_NAME);
INIT_ATOM_(_NET_WM_ICON_NAME);
INIT_ATOM_(_NET_WM_ICON);
INIT_ATOM_(_NET_WM_STATE);
INIT_ATOM_(_NET_WM_STATE_FULLSCREEN);
INIT_ATOM_(_NET_SUPPORTED);
win_check_wm_support(e->dpy, RootWindow(e->dpy, e->scr));
}
void win_open(win_t *win)
{
int c, i, j, n;
win_env_t *e;
XClassHint classhint;
unsigned long *icon_data;
XColor col;
char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
Pixmap none;
int gmask;
XSizeHints sizehints;
Bool fullscreen = options->fullscreen && fs_support;
if (win == NULL)
return;
e = &win->env;
sizehints.flags = PWinGravity;
sizehints.win_gravity = NorthWestGravity;
/* determine window offsets, width & height */
if (options->geometry == NULL)
gmask = 0;
else
gmask = XParseGeometry(options->geometry, &win->x, &win->y,
&win->w, &win->h);
if ((gmask & WidthValue) != 0)
sizehints.flags |= USSize;
else
win->w = WIN_WIDTH;
if ((gmask & HeightValue) != 0)
sizehints.flags |= USSize;
else
win->h = WIN_HEIGHT;
if ((gmask & XValue) != 0) {
if ((gmask & XNegative) != 0) {
win->x += e->scrw - win->w;
sizehints.win_gravity = NorthEastGravity;
}
sizehints.flags |= USPosition;
} else {
win->x = 0;
}
if ((gmask & YValue) != 0) {
if ((gmask & YNegative) != 0) {
win->y += e->scrh - win->h;
sizehints.win_gravity = sizehints.win_gravity == NorthEastGravity
? SouthEastGravity : SouthWestGravity;
}
sizehints.flags |= USPosition;
} else {
win->y = 0;
}
win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
win->x, win->y, win->w, win->h, 0,
e->depth, InputOutput, e->vis, 0, NULL);
if (win->xwin == None)
die("could not create window");
XSelectInput(e->dpy, win->xwin,
ButtonReleaseMask | ButtonPressMask | KeyPressMask |
PointerMotionMask | StructureNotifyMask);
carrow = XCreateFontCursor(e->dpy, XC_left_ptr);
chand = XCreateFontCursor(e->dpy, XC_fleur);
cwatch = XCreateFontCursor(e->dpy, XC_watch);
if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
&col, &col) == 0)
{
die("could not allocate color: black");
}
none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8);
cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0);
gc = XCreateGC(e->dpy, win->xwin, 0, None);
n = icons[ARRLEN(icons)-1].size;
icon_data = s_malloc((n * n + 2) * sizeof(*icon_data));
for (i = 0; i < ARRLEN(icons); i++) {
n = 0;
icon_data[n++] = icons[i].size;
icon_data[n++] = icons[i].size;
for (j = 0; j < icons[i].cnt; j++) {
for (c = icons[i].data[j] >> 4; c >= 0; c--)
icon_data[n++] = icon_colors[icons[i].data[j] & 0x0F];
}
XChangeProperty(e->dpy, win->xwin,
atoms[ATOM__NET_WM_ICON], XA_CARDINAL, 32,
i == 0 ? PropModeReplace : PropModeAppend,
(unsigned char *) icon_data, n);
}
free(icon_data);
win_set_title(win, "sxiv");
classhint.res_class = "Sxiv";
classhint.res_name = options->res_name != NULL ? options->res_name : "sxiv";
XSetClassHint(e->dpy, win->xwin, &classhint);
XSetWMProtocols(e->dpy, win->xwin, &atoms[ATOM_WM_DELETE_WINDOW], 1);
sizehints.width = win->w;
sizehints.height = win->h;
sizehints.x = win->x;
sizehints.y = win->y;
XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
win->h -= win->bar.h;
win->buf.w = e->scrw;
win->buf.h = e->scrh;
win->buf.pm = XCreatePixmap(e->dpy, win->xwin,
win->buf.w, win->buf.h, e->depth);
XSetForeground(e->dpy, gc, fullscreen ? win->fscol : win->bgcol);
XFillRectangle(e->dpy, win->buf.pm, gc, 0, 0, win->buf.w, win->buf.h);
XSetWindowBackgroundPixmap(e->dpy, win->xwin, win->buf.pm);
XMapWindow(e->dpy, win->xwin);
XFlush(e->dpy);
if (fullscreen)
win_toggle_fullscreen(win);
}
void win_close(win_t *win)
{
if (win == NULL || win->xwin == None)
return;
XFreeCursor(win->env.dpy, carrow);
XFreeCursor(win->env.dpy, cnone);
XFreeCursor(win->env.dpy, chand);
XFreeCursor(win->env.dpy, cwatch);
XFreeGC(win->env.dpy, gc);
XDestroyWindow(win->env.dpy, win->xwin);
XCloseDisplay(win->env.dpy);
}
bool win_configure(win_t *win, XConfigureEvent *c)
{
bool changed;
if (win == NULL || c == NULL)
return false;
changed = win->w != c->width || win->h + win->bar.h != c->height;
win->x = c->x;
win->y = c->y;
win->w = c->width;
win->h = c->height - win->bar.h;
win->bw = c->border_width;
return changed;
}
void win_toggle_fullscreen(win_t *win)
{
XEvent ev;
XClientMessageEvent *cm;
if (win == NULL || win->xwin == None)
return;
if (!fs_support) {
if (!fs_warned) {
warn("window manager does not support fullscreen");
fs_warned = True;
}
return;
}
win->fullscreen = !win->fullscreen;
memset(&ev, 0, sizeof(ev));
ev.type = ClientMessage;
cm = &ev.xclient;
cm->window = win->xwin;
cm->message_type = atoms[ATOM__NET_WM_STATE];
cm->format = 32;
cm->data.l[0] = win->fullscreen;
cm->data.l[1] = atoms[ATOM__NET_WM_STATE_FULLSCREEN];
cm->data.l[2] = cm->data.l[3] = 0;
XSendEvent(win->env.dpy, DefaultRootWindow(win->env.dpy), False,
SubstructureNotifyMask | SubstructureRedirectMask, &ev);
}
void win_toggle_bar(win_t *win)
{
if (win == NULL || win->xwin == None)
return;
if (win->bar.h != 0) {
win->h += win->bar.h;
win->bar.h = 0;
} else {
win->bar.h = barheight;
win->h -= win->bar.h;
}
}
void win_clear(win_t *win)
{
win_env_t *e;
if (win == NULL || win->xwin == None)
return;
e = &win->env;
if (win->w > win->buf.w || win->h + win->bar.h > win->buf.h) {
XFreePixmap(e->dpy, win->buf.pm);
win->buf.w = MAX(win->buf.w, win->w);
win->buf.h = MAX(win->buf.h, win->h + win->bar.h);
win->buf.pm = XCreatePixmap(e->dpy, win->xwin,
win->buf.w, win->buf.h, e->depth);
}
XSetForeground(e->dpy, gc, win->fullscreen ? win->fscol : win->bgcol);
XFillRectangle(e->dpy, win->buf.pm, gc, 0, 0, win->buf.w, win->buf.h);
}
void win_draw_bar(win_t *win)
{
int len, olen, x, y, w, tw;
char rest[3];
const char *dots = "...";
win_env_t *e;
win_bar_t *l, *r;
if (win == NULL || win->xwin == None)
return;
if ((l = &win->bar.l)->buf == NULL || (r = &win->bar.r)->buf == NULL)
return;
e = &win->env;
y = win->h + font.ascent + V_TEXT_PAD;
w = win->w;
XSetForeground(e->dpy, gc, win->bar.bgcol);
XFillRectangle(e->dpy, win->buf.pm, gc, 0, win->h, win->w, win->bar.h);
XSetForeground(e->dpy, gc, win->bar.fgcol);
XSetBackground(e->dpy, gc, win->bar.bgcol);
if ((len = strlen(r->buf)) > 0) {
if ((tw = win_textwidth(r->buf, len, true)) > w)
return;
x = win->w - tw + H_TEXT_PAD;
w -= tw;
if (font.set)
XmbDrawString(e->dpy, win->buf.pm, font.set, gc, x, y, r->buf, len);
else
XDrawString(e->dpy, win->buf.pm, gc, x, y, r->buf, len);
}
if ((len = strlen(l->buf)) > 0) {
olen = len;
while (len > 0 && (tw = win_textwidth(l->buf, len, true)) > w)
len--;
if (len > 0) {
if (len != olen) {
w = strlen(dots);
if (len <= w)
return;
memcpy(rest, l->buf + len - w, w);
memcpy(l->buf + len - w, dots, w);
}
x = H_TEXT_PAD;
if (font.set)
XmbDrawString(e->dpy, win->buf.pm, font.set, gc, x, y, l->buf, len);
else
XDrawString(e->dpy, win->buf.pm, gc, x, y, l->buf, len);
if (len != olen)
memcpy(l->buf + len - w, rest, w);
}
}
}
void win_draw(win_t *win)
{
if (win == NULL || win->xwin == None)
return;
if (win->bar.h > 0)
win_draw_bar(win);
XSetWindowBackgroundPixmap(win->env.dpy, win->xwin, win->buf.pm);
XClearWindow(win->env.dpy, win->xwin);
XFlush(win->env.dpy);
}
void win_draw_rect(win_t *win, int x, int y, int w, int h, bool fill, int lw,
unsigned long col)
{
XGCValues gcval;
if (win == NULL || win->buf.pm == None)
return;
gcval.line_width = lw;
gcval.foreground = col;
XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval);
if (fill)
XFillRectangle(win->env.dpy, win->buf.pm, gc, x, y, w, h);
else
XDrawRectangle(win->env.dpy, win->buf.pm, gc, x, y, w, h);
}
int win_textwidth(const char *text, unsigned int len, bool with_padding)
{
XRectangle r;
int padding = with_padding ? 2 * H_TEXT_PAD : 0;
if (font.set) {
XmbTextExtents(font.set, text, len, NULL, &r);
return r.width + padding;
} else {
return XTextWidth(font.xfont, text, len) + padding;
}
}
void win_set_title(win_t *win, const char *title)
{
if (win == NULL || win->xwin == None)
return;
if (title == NULL)
title = "sxiv";
XStoreName(win->env.dpy, win->xwin, title);
XSetIconName(win->env.dpy, win->xwin, title);
XChangeProperty(win->env.dpy, win->xwin, atoms[ATOM__NET_WM_NAME],
XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
PropModeReplace, (unsigned char *) title, strlen(title));
XChangeProperty(win->env.dpy, win->xwin, atoms[ATOM__NET_WM_ICON_NAME],
XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
PropModeReplace, (unsigned char *) title, strlen(title));
}
void win_set_cursor(win_t *win, cursor_t cursor)
{
if (win == NULL || win->xwin == None)
return;
switch (cursor) {
case CURSOR_NONE:
XDefineCursor(win->env.dpy, win->xwin, cnone);
break;
case CURSOR_HAND:
XDefineCursor(win->env.dpy, win->xwin, chand);
break;
case CURSOR_WATCH:
XDefineCursor(win->env.dpy, win->xwin, cwatch);
break;
case CURSOR_ARROW:
default:
XDefineCursor(win->env.dpy, win->xwin, carrow);
break;
}
XFlush(win->env.dpy);
}