Files
ncmpcpp/src/display.cpp
2014-08-29 14:54:09 +02:00

430 lines
12 KiB
C++

/***************************************************************************
* Copyright (C) 2008-2014 by Andrzej Rybczak *
* electricityispower@gmail.com *
* *
* 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., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <cassert>
#include "browser.h"
#include "charset.h"
#include "display.h"
#include "helpers.h"
#include "song_info.h"
#include "playlist.h"
#include "global.h"
#include "tag_editor.h"
#include "utility/string.h"
#include "utility/type_conversions.h"
using Global::myScreen;
namespace {//
const wchar_t *toColumnName(char c)
{
switch (c)
{
case 'l':
return L"Time";
case 'f':
return L"Filename";
case 'D':
return L"Directory";
case 'a':
return L"Artist";
case 'A':
return L"Album Artist";
case 't':
return L"Title";
case 'b':
return L"Album";
case 'y':
return L"Date";
case 'n': case 'N':
return L"Track";
case 'g':
return L"Genre";
case 'c':
return L"Composer";
case 'p':
return L"Performer";
case 'd':
return L"Disc";
case 'C':
return L"Comment";
case 'P':
return L"Priority";
default:
return L"?";
}
}
template <typename T>
void setProperties(NC::Menu<T> &menu, const MPD::Song &s, const ProxySongList &pl, bool &separate_albums,
bool &is_now_playing, bool &is_selected, bool &discard_colors)
{
size_t drawn_pos = menu.drawn() - menu.begin();
separate_albums = false;
if (Config.playlist_separate_albums)
{
size_t next_pos = drawn_pos+1;
auto next = next_pos < pl.size() ? pl.getSong(next_pos) : 0;
if (next && next->getAlbum() != s.getAlbum())
separate_albums = true;
}
if (separate_albums)
{
menu << NC::Format::Underline;
mvwhline(menu.raw(), menu.getY(), 0, KEY_SPACE, menu.getWidth());
}
is_selected = menu.drawn()->isSelected();
discard_colors = Config.discard_colors_if_item_is_selected && is_selected;
int song_pos = menu.isFiltered() ? s.getPosition() : drawn_pos;
is_now_playing = Status::State::player() != MPD::psStop && myPlaylist->isActiveWindow(menu)
&& song_pos == myPlaylist->currentSongPosition();
if (is_now_playing)
menu << Config.now_playing_prefix;
}
template <typename T>
void showSongs(NC::Menu<T> &menu, const MPD::Song &s, const ProxySongList &pl, const std::string &format)
{
bool separate_albums, is_now_playing, is_selected, discard_colors;
setProperties(menu, s, pl, separate_albums, is_now_playing, is_selected, discard_colors);
size_t y = menu.getY();
std::string line = Charset::utf8ToLocale(s.toString(format, Config.tags_separator, "$"));
for (auto it = line.begin(); it != line.end(); ++it)
{
if (*it == '$')
{
++it;
if (it == line.end()) // end of format
{
menu << '$';
break;
}
else if (isdigit(*it)) // color
{
if (!discard_colors)
menu << NC::Color(*it-'0');
}
else if (*it == 'R') // right align
{
NC::Buffer buf;
buf << " ";
stringToBuffer(++it, line.end(), buf);
if (discard_colors)
buf.removeProperties();
size_t x_off = menu.getWidth() - wideLength(ToWString(buf.str()));
if (is_now_playing)
x_off -= Config.now_playing_suffix_length;
if (is_selected)
x_off -= Config.selected_item_suffix_length;
menu << NC::XY(x_off, y) << buf;
break;
}
else // not a color nor right align, just a random character
menu << *--it;
}
else if (*it == MPD::Song::FormatEscapeCharacter)
{
++it;
// treat '$' as a normal character if song format escape char is prepended to it
if (it == line.end() || *it != '$')
--it;
menu << *it;
}
else
menu << *it;
}
if (is_now_playing)
menu << Config.now_playing_suffix;
if (separate_albums)
menu << NC::Format::NoUnderline;
}
template <typename T>
void showSongsInColumns(NC::Menu<T> &menu, const MPD::Song &s, const ProxySongList &pl)
{
if (Config.columns.empty())
return;
bool separate_albums, is_now_playing, is_selected, discard_colors;
setProperties(menu, s, pl, separate_albums, is_now_playing, is_selected, discard_colors);
int width;
int y = menu.getY();
int remained_width = menu.getWidth();
std::vector<Column>::const_iterator it, last = Config.columns.end() - 1;
for (it = Config.columns.begin(); it != Config.columns.end(); ++it)
{
// check current X coordinate
int x = menu.getX();
// column has relative width and all after it have fixed width,
// so stretch it so it fills whole screen along with these after.
if (it->stretch_limit >= 0) // (*)
width = remained_width - it->stretch_limit;
else
width = it->fixed ? it->width : it->width * menu.getWidth() * 0.01;
// columns with relative width may shrink to 0, omit them
if (width == 0)
continue;
// if column is not last, we need to have spacing between it
// and next column, so we substract it now and restore later.
if (it != last)
--width;
if (it == Config.columns.begin() && (is_now_playing || is_selected))
{
// here comes the shitty part. if we applied now playing or selected
// prefix, first column's width needs to be properly modified, so
// next column is not affected by them. if prefixes fit, we just
// subtract their width from allowed column's width. if they don't,
// then we pretend that they do, but we adjust current cursor position
// so part of them will be overwritten by next column.
int offset = 0;
if (is_now_playing)
offset += Config.now_playing_prefix_length;
if (is_selected)
offset += Config.selected_item_prefix_length;
if (width-offset < 0)
{
remained_width -= width + 1;
menu.goToXY(width, y);
menu << ' ';
continue;
}
width -= offset;
remained_width -= offset;
}
// if column doesn't fit into screen, discard it and any other after it.
if (remained_width-width < 0 || width < 0 /* this one may come from (*) */)
break;
std::wstring tag;
for (size_t i = 0; i < it->type.length(); ++i)
{
MPD::Song::GetFunction get = charToGetFunction(it->type[i]);
assert(get);
tag = ToWString(Charset::utf8ToLocale(s.getTags(get, Config.tags_separator)));
if (!tag.empty())
break;
}
if (tag.empty() && it->display_empty_tag)
tag = ToWString(Config.empty_tag);
wideCut(tag, width);
if (!discard_colors && it->color != NC::Color::Default)
menu << it->color;
int x_off = 0;
// if column uses right alignment, calculate proper offset.
// otherwise just assume offset is 0, ie. we start from the left.
if (it->right_alignment)
x_off = std::max(0, width - int(wideLength(tag)));
whline(menu.raw(), KEY_SPACE, width);
menu.goToXY(x + x_off, y);
menu << tag;
menu.goToXY(x + width, y);
if (it != last)
{
// add missing width's part and restore the value.
menu << ' ';
remained_width -= width+1;
}
if (!discard_colors && it->color != NC::Color::Default)
menu << NC::Color::End;
}
// here comes the shitty part, second chapter. here we apply
// now playing suffix or/and make room for selected suffix
// (as it will be applied in Menu::Refresh when this function
// returns there).
if (is_now_playing)
{
int np_x = menu.getWidth() - Config.now_playing_suffix_length;
if (is_selected)
np_x -= Config.selected_item_suffix_length;
menu.goToXY(np_x, y);
menu << Config.now_playing_suffix;
}
if (is_selected)
menu.goToXY(menu.getWidth() - Config.selected_item_suffix_length, y);
if (separate_albums)
menu << NC::Format::NoUnderline;
}
}
std::string Display::Columns(size_t list_width)
{
std::string result;
if (Config.columns.empty())
return result;
int width;
int remained_width = list_width;
std::vector<Column>::const_iterator it, last = Config.columns.end() - 1;
for (it = Config.columns.begin(); it != Config.columns.end(); ++it)
{
// column has relative width and all after it have fixed width,
// so stretch it so it fills whole screen along with these after.
if (it->stretch_limit >= 0) // (*)
width = remained_width - it->stretch_limit;
else
width = it->fixed ? it->width : it->width * list_width * 0.01;
// columns with relative width may shrink to 0, omit them
if (width == 0)
continue;
// if column is not last, we need to have spacing between it
// and next column, so we substract it now and restore later.
if (it != last)
--width;
// if column doesn't fit into screen, discard it and any other after it.
if (remained_width-width < 0 || width < 0 /* this one may come from (*) */)
break;
std::wstring name;
if (it->name.empty())
{
size_t j = 0;
while (true)
{
name += toColumnName(it->type[j]);
++j;
if (j < it->type.length())
name += '/';
else
break;
}
}
else
name = it->name;
wideCut(name, width);
int x_off = std::max(0, width - int(wideLength(name)));
if (it->right_alignment)
{
result += std::string(x_off, KEY_SPACE);
result += Charset::utf8ToLocale(ToString(name));
}
else
{
result += Charset::utf8ToLocale(ToString(name));
result += std::string(x_off, KEY_SPACE);
}
if (it != last)
{
// add missing width's part and restore the value.
remained_width -= width+1;
result += ' ';
}
}
return result;
}
void Display::SongsInColumns(NC::Menu< MPD::Song >& menu, const ProxySongList &pl)
{
showSongsInColumns(menu, menu.drawn()->value(), pl);
}
void Display::Songs(NC::Menu< MPD::Song >& menu, const ProxySongList &pl, const std::string &format)
{
showSongs(menu, menu.drawn()->value(), pl, format);
}
#ifdef HAVE_TAGLIB_H
void Display::Tags(NC::Menu<MPD::MutableSong> &menu)
{
const MPD::MutableSong &s = menu.drawn()->value();
if (s.isModified())
menu << Config.modified_item_prefix;
size_t i = myTagEditor->TagTypes->choice();
if (i < 11)
{
ShowTag(menu, Charset::utf8ToLocale(s.getTags(SongInfo::Tags[i].Get, Config.tags_separator)));
}
else if (i == 12)
{
if (s.getNewName().empty())
menu << Charset::utf8ToLocale(s.getName());
else
menu << Charset::utf8ToLocale(s.getName())
<< Config.color2 << " -> " << NC::Color::End
<< Charset::utf8ToLocale(s.getNewName());
}
}
#endif // HAVE_TAGLIB_H
void Display::Items(NC::Menu<MPD::Item> &menu, const ProxySongList &pl)
{
const MPD::Item &item = menu.drawn()->value();
switch (item.type)
{
case MPD::itDirectory:
menu << "["
<< Charset::utf8ToLocale(getBasename(item.name))
<< "]";
break;
case MPD::itSong:
switch (Config.browser_display_mode)
{
case DisplayMode::Classic:
showSongs(menu, *item.song, pl, Config.song_list_format);
break;
case DisplayMode::Columns:
showSongsInColumns(menu, *item.song, pl);
break;
}
break;
case MPD::itPlaylist:
menu << Config.browser_playlist_prefix
<< Charset::utf8ToLocale(getBasename(item.name));
break;
}
}
void Display::SEItems(NC::Menu<SEItem> &menu, const ProxySongList &pl)
{
const SEItem &si = menu.drawn()->value();
if (si.isSong())
{
switch (Config.search_engine_display_mode)
{
case DisplayMode::Classic:
showSongs(menu, si.song(), pl, Config.song_list_format);
break;
case DisplayMode::Columns:
showSongsInColumns(menu, si.song(), pl);
break;
}
}
else
menu << si.buffer();
}