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/* Copyright 2011 Pierre Ossman <ossman@cendio.se> for Cendio AB
*
* This 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.
*
* This software 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 this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifndef __FLTK_LAYOUT_H__
#define __FLTK_LAYOUT_H__
#include <FL/fl_draw.H>
#include <FL/Fl_Menu_.H>
/* Calculates the width of a string as printed by FLTK (pixels) */
static inline int gui_str_len(const char *str)
{
float len;
fl_font(FL_HELVETICA, FL_NORMAL_SIZE);
len = fl_width(str);
return (int)(len + 0.5f);
}
/* Escapes all @ in text as those have special meaning in labels */
static inline size_t fltk_escape(const char *in, char *out, size_t maxlen)
{
size_t len;
len = 0;
while (*in != '\0') {
if (*in == '@') {
if (maxlen >= 3) {
*out++ = '@';
*out++ = '@';
maxlen -= 2;
}
len += 2;
} else {
if (maxlen >= 2) {
*out++ = *in;
maxlen--;
}
len += 1;
}
in++;
}
if (maxlen)
*out = '\0';
return len;
}
/* Filter out unsafe characters for menu entries */
static inline size_t fltk_menu_escape(const char *in, char *out, size_t maxlen)
{
size_t len;
len = 0;
while (*in != '\0') {
if (*in == '/') {
if (maxlen >= 3) {
*out++ = '\\';
*out++ = '/';
maxlen -= 2;
}
len += 2;
} else {
if (maxlen >= 2) {
*out++ = *in;
maxlen--;
}
len += 1;
}
in++;
}
if (maxlen)
*out = '\0';
return len;
}
/* Helper to add menu entries safely */
static inline void fltk_menu_add(Fl_Menu_ *menu, const char *text,
int shortcut, Fl_Callback *cb,
void *data = 0, int flags = 0)
{
char buffer[1024];
if (fltk_menu_escape(text, buffer, sizeof(buffer)) >= sizeof(buffer))
return;
menu->add(buffer, shortcut, cb, data, flags);
}
/**** MARGINS ****/
#define OUTER_MARGIN 10
#define INNER_MARGIN 10
/* Tighter grouping of related fields */
#define TIGHT_MARGIN 5
/**** ADJUSTMENTS ****/
#define INDENT 20
/**** FLTK WIDGETS ****/
/* Fl_Tabs */
#define TABS_HEIGHT 30
/* Fl_Input */
#define INPUT_LABEL_OFFSET FL_NORMAL_SIZE
#define INPUT_HEIGHT 25
/* Fl_Button */
#define BUTTON_WIDTH 115
#define BUTTON_HEIGHT 27
/* Fl_Round_Button */
#define RADIO_MIN_WIDTH (FL_NORMAL_SIZE + 5)
#define RADIO_HEIGHT (FL_NORMAL_SIZE + 7)
/* Fl_Check_Button */
#define CHECK_MIN_WIDTH RADIO_MIN_WIDTH
#define CHECK_HEIGHT RADIO_HEIGHT
/* Fl_Choice */
#define CHOICE_HEIGHT INPUT_HEIGHT
/* Fl_Group */
#define GROUP_LABEL_OFFSET FL_NORMAL_SIZE
#define GROUP_MARGIN 12
/**** HELPERS FOR DYNAMIC TEXT ****/
/* Extra space to add after any text line */
#define TEXT_PADDING 2
/* Use this when the text extends to the right (e.g. checkboxes) */
#define LBLRIGHT(x, y, w, h, str) \
(x), (y), (w) + gui_str_len(str) + TEXT_PADDING, (h), (str)
/* Use this when the space for the label is taken from the left (e.g. input) */
#define LBLLEFT(x, y, w, h, str) \
(x) + (gui_str_len(str) + TEXT_PADDING), (y), \
(w) - (gui_str_len(str) + TEXT_PADDING), (h), (str)
#endif
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