e16/src/cursors.c

447 lines
10 KiB
C

/*
* Copyright (C) 2000-2007 Carsten Haitzler, Geoff Harrison and various contributors
* Copyright (C) 2004-2022 Kim Woelders
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of the Software, its documentation and marketing & publicity
* materials, and acknowledgment shall be given in the documentation, materials
* and software packages that this Software was used.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#include "E.h"
#include "conf.h"
#include "cursors.h"
#include "emodule.h"
#include "list.h"
#include "xwin.h"
#if USE_XRENDER
#include "eimage.h"
#endif
struct _ecursor {
dlist_t list;
char *name;
EX_Cursor cursor;
unsigned int ref_count;
char *file;
unsigned int bg;
unsigned int fg;
int native_id;
};
static LIST_HEAD(cursor_list);
#if !USE_XRENDER
static EX_Cursor
_ECursorCreateFromBitmapData(int w, int h, unsigned char *cdata,
unsigned char *cmask, int xh, int yh,
unsigned int fg, unsigned int bg)
{
EX_Cursor curs;
Pixmap pmap, mask;
XColor fgxc, bgxc;
curs = NoXID;
mask = NoXID;
pmap = XCreateBitmapFromData(disp, WinGetXwin(VROOT), (char *)cdata, w, h);
if (!pmap)
goto done;
if (cmask)
mask =
XCreateBitmapFromData(disp, WinGetXwin(VROOT), (char *)cmask, w, h);
/* Looks like the pmap (not mask) bits in all theme cursors are inverted.
* Fix by swapping fg and bg colors. */
COLOR32_TO_RGB16(bg, fgxc.red, fgxc.green, fgxc.blue);
COLOR32_TO_RGB16(fg, bgxc.red, bgxc.green, bgxc.blue);
XAllocColor(disp, WinGetCmap(VROOT), &fgxc);
XAllocColor(disp, WinGetCmap(VROOT), &bgxc);
curs = XCreatePixmapCursor(disp, pmap, mask, &fgxc, &bgxc, xh, yh);
EFreePixmap(pmap);
if (mask)
EFreePixmap(mask);
done:
return curs;
}
#endif /* !USE_XRENDER */
static EX_Cursor
_ECursorCreateFromBitmaps(const char *img, unsigned int fg, unsigned int bg)
{
EX_Cursor curs;
unsigned char *cdata, *cmask;
unsigned int w, h, wm, hm;
int xh, yh;
char msk[FILEPATH_LEN_MAX];
curs = NoXID;
w = h = 0;
xh = yh = 0;
cdata = cmask = NULL;
XReadBitmapFileData(img, &w, &h, &cdata, &xh, &yh);
if (!cdata)
goto done;
XQueryBestCursor(disp, WinGetXwin(VROOT), w, h, &wm, &hm);
if (w > wm || h > hm)
goto done;
Esnprintf(msk, sizeof(msk), "%s.mask", img);
XReadBitmapFileData(msk, &wm, &hm, &cmask, NULL, NULL);
if (cmask && (w != wm || h != hm))
{
/* Dimension mismatch - drop mask */
XFree(cmask);
cmask = NULL;
}
if (xh < 0 || xh >= (int)w)
xh = w / 2;
if (yh < 0 || yh >= (int)h)
yh = h / 2;
#if USE_XRENDER
curs = EImageCursorCreateFromBitmapData(w, h, cdata, cmask, xh, yh, fg, bg);
#else
curs = _ECursorCreateFromBitmapData(w, h, cdata, cmask, xh, yh, fg, bg);
#endif
if (cmask)
XFree(cmask);
done:
if (cdata)
XFree(cdata);
return curs;
}
static void
_ECursorCreate(const char *name, const char *image, int native_id,
unsigned int fg, unsigned int bg)
{
ECursor *ec;
if ((!name) || (!image && native_id == -1))
return;
ec = ECALLOC(ECursor, 1);
if (!ec)
return;
ec->name = Estrdup(name);
ec->file = Estrdup(image);
ec->fg = 0xff000000 | fg;
ec->bg = 0xff000000 | bg;
ec->native_id = native_id;
LIST_PREPEND(ECursor, &cursor_list, ec);
}
static void
_ECursorDestroy(ECursor *ec)
{
if (!ec)
return;
if (ec->ref_count > 0)
{
DialogOK("ECursor Error!", _("%u references remain"), ec->ref_count);
return;
}
LIST_REMOVE(ECursor, &cursor_list, ec);
Efree(ec->name);
Efree(ec->file);
Efree(ec);
}
static ECursor *
_ECursorRealize(ECursor *ec)
{
char *img;
if (ec->file)
{
img = ThemeFileFind(ec->file, FILE_TYPE_CURSOR);
EFREE_NULL(ec->file); /* Ok or not - we never need file again */
if (!img)
goto done;
ec->cursor = _ECursorCreateFromBitmaps(img, ec->fg, ec->bg);
if (ec->cursor == NoXID)
{
Eprintf("*** Failed to create cursor \"%s\" from %s,%s.mask\n",
ec->name, img, img);
}
Efree(img);
}
else
{
ec->cursor = (ec->native_id == 999) ?
None : XCreateFontCursor(disp, ec->native_id);
}
done:
if (ec->cursor == NoXID)
{
_ECursorDestroy(ec);
ec = NULL;
}
return ec;
}
static int
_ECursorMatchName(const void *data, const void *match)
{
return strcmp(((const ECursor *)data)->name, (const char *)match);
}
static ECursor *
_ECursorFind(const char *name)
{
if (!name || !name[0])
return NULL;
return LIST_FIND(ECursor, &cursor_list, _ECursorMatchName, name);
}
ECursor *
ECursorAlloc(const char *name)
{
ECursor *ec;
if (!name)
return NULL;
ec = _ECursorFind(name);
if (!ec)
return NULL;
if (ec->cursor == NoXID)
ec = _ECursorRealize(ec);
if (!ec)
return NULL;
ec->ref_count++;
return ec;
}
void
ECursorFree(ECursor *ec)
{
if (ec)
ec->ref_count--;
}
int
ECursorConfigLoad(FILE *fs)
{
int err = 0;
unsigned int cbg, cfg;
char s[FILEPATH_LEN_MAX];
char s2[FILEPATH_LEN_MAX];
char *p2;
int i1, i2, r, g, b;
char name[FILEPATH_LEN_MAX], *pname;
char file[FILEPATH_LEN_MAX], *pfile;
int native_id = -1;
COLOR32_FROM_RGB(cbg, 0, 0, 0);
COLOR32_FROM_RGB(cfg, 255, 255, 255);
pname = pfile = NULL;
while (GetLine(s, sizeof(s), fs))
{
i1 = ConfigParseline1(s, s2, &p2, NULL);
switch (i1)
{
case CONFIG_CURSOR:
err = -1;
i2 = atoi(s2);
if (i2 != CONFIG_OPEN)
goto done;
COLOR32_FROM_RGB(cbg, 0, 0, 0);
COLOR32_FROM_RGB(cfg, 255, 255, 255);
pname = pfile = NULL;
native_id = -1;
break;
case CONFIG_CLOSE:
_ECursorCreate(pname, pfile, native_id, cfg, cbg);
err = 0;
break;
case CONFIG_CLASSNAME:
if (_ECursorFind(s2))
{
SkipTillEnd(fs);
goto done;
}
strcpy(name, s2);
pname = name;
break;
case CURS_BG_RGB:
r = g = b = 0;
sscanf(p2, "%d %d %d", &r, &g, &b);
COLOR32_FROM_RGB(cbg, r, g, b);
break;
case CURS_FG_RGB:
r = g = b = 255;
sscanf(p2, "%d %d %d", &r, &g, &b);
COLOR32_FROM_RGB(cfg, r, g, b);
break;
case XBM_FILE:
strcpy(file, s2);
pfile = file;
break;
case NATIVE_ID:
native_id = atoi(s2);
break;
default:
break;
}
}
done:
if (err)
ConfigAlertLoad("Cursor");
return err;
}
void
ECursorApply(ECursor *ec, Win win)
{
if (!ec)
return;
XDefineCursor(disp, WinGetXwin(win), ec->cursor);
}
static EX_Cursor
_ECursorGetByName(const char *name, const char *name2, unsigned int fallback)
{
ECursor *ec;
ec = ECursorAlloc(name);
if (!ec && name2)
ec = ECursorAlloc(name2);
if (ec)
return ec->cursor;
return XCreateFontCursor(disp, fallback);
}
typedef struct {
const char *pri;
const char *sec;
unsigned int fallback;
} ECDataRec;
static const ECDataRec ECData[ECSR_COUNT] = {
{ "DEFAULT", NULL, XC_left_ptr },
{ "GRAB", NULL, XC_crosshair },
{ "PGRAB", NULL, XC_X_cursor },
{ "GRAB_MOVE", NULL, XC_fleur },
{ "GRAB_RESIZE", NULL, XC_sizing },
{ "RESIZE_H", NULL, XC_sb_h_double_arrow },
{ "RESIZE_V", NULL, XC_sb_v_double_arrow },
{ "RESIZE_TL", "RESIZE_BR", XC_top_left_corner },
{ "RESIZE_TR", "RESIZE_BL", XC_top_right_corner },
{ "RESIZE_BL", "RESIZE_TR", XC_bottom_left_corner },
{ "RESIZE_BR", "RESIZE_TL", XC_bottom_right_corner },
};
static EX_Cursor ECsrs[ECSR_COUNT] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};
EX_Cursor
ECsrGet(int which)
{
if (which < 0 || which >= ECSR_COUNT)
return NoXID;
if (ECsrs[which] == 1)
ECsrs[which] = _ECursorGetByName(ECData[which].pri, ECData[which].sec,
ECData[which].fallback);
return ECsrs[which];
}
void
ECsrApply(int which, EX_Window win)
{
XDefineCursor(disp, win, ECsrGet(which));
}
static void
_CursorsIpc(const char *params)
{
const char *p;
char cmd[128], prm[4096];
int len;
ECursor *ec;
cmd[0] = prm[0] = '\0';
p = params;
if (p)
{
len = 0;
sscanf(p, "%100s %4000s %n", cmd, prm, &len);
}
if (!strncmp(cmd, "list", 2))
{
LIST_FOR_EACH(ECursor, &cursor_list, ec) IpcPrintf("%s\n", ec->name);
}
}
static const IpcItem CursorIpcArray[] = {
{
_CursorsIpc,
"cursor", "csr",
"Cursor functions",
" cursor list Show all cursors\n" }
};
/*
* Module descriptor
*/
extern const EModule ModCursors;
const EModule ModCursors = {
"cursor", "csr",
NULL,
MOD_ITEMS(CursorIpcArray),
{ 0, NULL }
};