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livetrax/gtk2_ardour/utils.cc
Paul Davis 3436df6eab the usual blob of fixes. note the requirement for ComboBoxText::set_active_text()
git-svn-id: svn://localhost/trunk/ardour2@160 d708f5d6-7413-0410-9779-e7cbd77b26cf
2005-12-02 19:18:26 +00:00

527 lines
10 KiB
C++

/*
Copyright (C) 2003 Paul Davis
This program 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 program 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 program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <cstdlib>
#include <cctype>
#include <libart_lgpl/art_misc.h>
#include <gtkmm/window.h>
#include <gtkmm/combo.h>
#include <gtkmm/label.h>
#include <gtkmm/paned.h>
#include <gtk/gtkpaned.h>
#include <gtkmm2ext/utils.h>
#include "ardour_ui.h"
#include "keyboard.h"
#include "utils.h"
#include "i18n.h"
#include "rgb_macros.h"
#include "canvas_impl.h"
using namespace std;
using namespace Gtk;
using namespace sigc;
string
short_version (string orig, string::size_type target_length)
{
/* this tries to create a recognizable abbreviation
of "orig" by removing characters until we meet
a certain target length.
note that we deliberately leave digits in the result
without modification.
*/
string::size_type pos;
/* remove white-space and punctuation, starting at end */
while (orig.length() > target_length) {
if ((pos = orig.find_last_of (_("\"\n\t ,<.>/?:;'[{}]~`!@#$%^&*()_-+="))) == string::npos) {
break;
}
orig.replace (pos, 1, "");
}
/* remove lower-case vowels, starting at end */
while (orig.length() > target_length) {
if ((pos = orig.find_last_of (_("aeiou"))) == string::npos) {
break;
}
orig.replace (pos, 1, "");
}
/* remove upper-case vowels, starting at end */
while (orig.length() > target_length) {
if ((pos = orig.find_last_of (_("AEIOU"))) == string::npos) {
break;
}
orig.replace (pos, 1, "");
}
/* remove lower-case consonants, starting at end */
while (orig.length() > target_length) {
if ((pos = orig.find_last_of (_("bcdfghjklmnpqrtvwxyz"))) == string::npos) {
break;
}
orig.replace (pos, 1, "");
}
/* remove upper-case consonants, starting at end */
while (orig.length() > target_length) {
if ((pos = orig.find_last_of (_("BCDFGHJKLMNPQRTVWXYZ"))) == string::npos) {
break;
}
orig.replace (pos, 1, "");
}
/* whatever the length is now, use it */
return orig;
}
string
fit_to_pixels (string str, int pixel_width, string font)
{
Label foo;
int width;
int height;
Pango::FontDescription fontdesc (font);
int namelen = str.length();
char cstr[namelen+1];
strcpy (cstr, str.c_str());
while (namelen) {
Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout (cstr);
layout->set_font_description (fontdesc);
layout->get_pixel_size (width, height);
if (width < (pixel_width)) {
break;
}
--namelen;
cstr[namelen] = '\0';
}
return cstr;
}
int
atoi (const string& s)
{
return atoi (s.c_str());
}
double
atof (const string& s)
{
return atof (s.c_str());
}
void
strip_whitespace_edges (string& str)
{
string::size_type i;
string::size_type len;
string::size_type s;
len = str.length();
for (i = 0; i < len; ++i) {
if (isgraph (str[i])) {
break;
}
}
s = i;
for (i = len - 1; i >= 0; --i) {
if (isgraph (str[i])) {
break;
}
}
str = str.substr (s, (i - s) + 1);
}
vector<string>
internationalize (const char **array)
{
vector<string> v;
for (uint32_t i = 0; array[i]; ++i) {
v.push_back (_(array[i]));
}
return v;
}
gint
just_hide_it (GdkEventAny *ev, Gtk::Window *win)
{
win->hide_all ();
return TRUE;
}
/* xpm2rgb copied from nixieclock, which bore the legend:
nixieclock - a nixie desktop timepiece
Copyright (C) 2000 Greg Ercolano, erco@3dsite.com
and was released under the GPL.
*/
unsigned char*
xpm2rgb (const char** xpm, uint32_t& w, uint32_t& h)
{
static long vals[256], val;
uint32_t t, x, y, colors, cpp;
unsigned char c;
unsigned char *savergb, *rgb;
// PARSE HEADER
if ( sscanf(xpm[0], "%u%u%u%u", &w, &h, &colors, &cpp) != 4 ) {
error << string_compose (_("bad XPM header %1"), xpm[0])
<< endmsg;
return 0;
}
savergb = rgb = (unsigned char*)art_alloc (h * w * 3);
// LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
for (t = 0; t < colors; ++t) {
sscanf (xpm[t+1], "%c c #%lx", &c, &val);
vals[c] = val;
}
// COLORMAP -> RGB CONVERSION
// Get low 3 bytes from vals[]
//
const char *p;
for (y = h-1; y > 0; --y) {
for (p = xpm[1+colors+(h-y-1)], x = 0; x < w; x++, rgb += 3) {
val = vals[(int)*p++];
*(rgb+2) = val & 0xff; val >>= 8; // 2:B
*(rgb+1) = val & 0xff; val >>= 8; // 1:G
*(rgb+0) = val & 0xff; // 0:R
}
}
return (savergb);
}
unsigned char*
xpm2rgba (const char** xpm, uint32_t& w, uint32_t& h)
{
static long vals[256], val;
uint32_t t, x, y, colors, cpp;
unsigned char c;
unsigned char *savergb, *rgb;
char transparent;
// PARSE HEADER
if ( sscanf(xpm[0], "%u%u%u%u", &w, &h, &colors, &cpp) != 4 ) {
error << string_compose (_("bad XPM header %1"), xpm[0])
<< endmsg;
return 0;
}
savergb = rgb = (unsigned char*)art_alloc (h * w * 4);
// LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
if (strstr (xpm[1], "None")) {
sscanf (xpm[1], "%c", &transparent);
t = 1;
} else {
transparent = 0;
t = 0;
}
for (; t < colors; ++t) {
sscanf (xpm[t+1], "%c c #%lx", &c, &val);
vals[c] = val;
}
// COLORMAP -> RGB CONVERSION
// Get low 3 bytes from vals[]
//
const char *p;
for (y = h-1; y > 0; --y) {
char alpha;
for (p = xpm[1+colors+(h-y-1)], x = 0; x < w; x++, rgb += 4) {
if (transparent && (*p++ == transparent)) {
alpha = 0;
val = 0;
} else {
alpha = 255;
val = vals[(int)*p];
}
*(rgb+3) = alpha; // 3: alpha
*(rgb+2) = val & 0xff; val >>= 8; // 2:B
*(rgb+1) = val & 0xff; val >>= 8; // 1:G
*(rgb+0) = val & 0xff; // 0:R
}
}
return (savergb);
}
ArdourCanvas::Points*
get_canvas_points (string who, uint32_t npoints)
{
// cerr << who << ": wants " << npoints << " canvas points" << endl;
#ifdef TRAP_EXCESSIVE_POINT_REQUESTS
if (npoints > (uint32_t) gdk_screen_width() + 4) {
abort ();
}
#endif
return new ArdourCanvas::Points (npoints);
}
int
channel_combo_get_channel_count (Gtk::ComboBoxText& combo)
{
string str = combo.get_active_text();
int chns;
if (str == _("mono")) {
return 1;
} else if (str == _("stereo")) {
return 2;
} else if ((chns = atoi (str)) != 0) {
return chns;
} else {
return 0;
}
}
static int32_t
int_from_hex (char hic, char loc)
{
int hi; /* hi byte */
int lo; /* low byte */
hi = (int) hic;
if( ('0'<=hi) && (hi<='9') ) {
hi -= '0';
} else if( ('a'<= hi) && (hi<= 'f') ) {
hi -= ('a'-10);
} else if( ('A'<=hi) && (hi<='F') ) {
hi -= ('A'-10);
}
lo = (int) loc;
if( ('0'<=lo) && (lo<='9') ) {
lo -= '0';
} else if( ('a'<=lo) && (lo<='f') ) {
lo -= ('a'-10);
} else if( ('A'<=lo) && (lo<='F') ) {
lo -= ('A'-10);
}
return lo + (16 * hi);
}
void
url_decode (string& url)
{
string::iterator last;
string::iterator next;
for (string::iterator i = url.begin(); i != url.end(); ++i) {
if ((*i) == '+') {
*i = ' ';
}
}
if (url.length() <= 3) {
return;
}
last = url.end();
--last; /* points at last char */
--last; /* points at last char - 1 */
for (string::iterator i = url.begin(); i != last; ) {
if (*i == '%') {
next = i;
url.erase (i);
i = next;
++next;
if (isxdigit (*i) && isxdigit (*next)) {
/* replace first digit with char */
*i = int_from_hex (*i,*next);
++i; /* points at 2nd of 2 digits */
url.erase (i);
}
} else {
++i;
}
}
}
Pango::FontDescription
get_font_for_style (string widgetname)
{
Gtk::Window window (WINDOW_TOPLEVEL);
Gtk::Label foobar;
Glib::RefPtr<Style> style;
window.add (foobar);
foobar.set_name (widgetname);
foobar.ensure_style();
style = foobar.get_style ();
return style->get_font();
}
gint
pane_handler (GdkEventButton* ev, Gtk::Paned* pane)
{
if (ev->window != Gtkmm2ext::get_paned_handle (*pane)) {
return FALSE;
}
if (Keyboard::is_delete_event (ev)) {
gint pos;
gint cmp;
pos = pane->get_position ();
if (dynamic_cast<VPaned*>(pane)) {
cmp = pane->get_height();
} else {
cmp = pane->get_width();
}
/* we have to use approximations here because we can't predict the
exact position or sizes of the pane (themes, etc)
*/
if (pos < 10 || abs (pos - cmp) < 10) {
/* already collapsed: restore it (note that this is cast from a pointer value to int, which is tricky on 64bit */
pane->set_position ((gint64) pane->get_data ("rpos"));
} else {
int collapse_direction;
/* store the current position */
pane->set_data ("rpos", (gpointer) pos);
/* collapse to show the relevant child in full */
collapse_direction = (gint64) pane->get_data ("collapse-direction");
if (collapse_direction) {
pane->set_position (1);
} else {
if (dynamic_cast<VPaned*>(pane)) {
pane->set_position (pane->get_height());
} else {
pane->set_position (pane->get_width());
}
}
}
return TRUE;
}
return FALSE;
}
uint32_t
rgba_from_style (string style, uint32_t r, uint32_t g, uint32_t b, uint32_t a)
{
/* In GTK+2, styles aren't set up correctly if the widget is not
attached to a toplevel window that has a screen pointer.
*/
static Gtk::Window* window = 0;
if (window == 0) {
window = new Window (WINDOW_TOPLEVEL);
}
Gtk::Label foo;
window->add (foo);
foo.set_name (style);
foo.ensure_style ();
GtkRcStyle* waverc = foo.get_style()->gobj()->rc_style;
if (waverc) {
r = waverc->fg[Gtk::STATE_NORMAL].red / 257;
g = waverc->fg[Gtk::STATE_NORMAL].green / 257;
b = waverc->fg[Gtk::STATE_NORMAL].blue / 257;
/* what a hack ... "a" is for "active" */
a = waverc->fg[GTK_STATE_ACTIVE].red / 257;
} else {
warning << string_compose (_("missing RGBA style for \"%1\""), style) << endl;
}
window->remove ();
return (uint32_t) RGBA_TO_UINT(r,g,b,a);
}
bool
canvas_item_visible (ArdourCanvas::Item* item)
{
return (item->gobj()->object.flags & GNOME_CANVAS_ITEM_VISIBLE) ? true : false;
}