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22c09ce84e
this can be used to factor out duplicate code implementations from all the various channel-, bouquet-, eventlists etc...
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/*
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Helper functions for various list implementations in neutrino
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Copyright (C) 2016 Stefan Seyfried
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License: GPL
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see http://www.gnu.org/licenses/
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*/
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#include <driver/rcinput.h>
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#include "listhelpers.h"
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#include <global.h>
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#include <gui/bouquetlist.h>
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template <class T> int CListHelpers::UpDownKey(T list, neutrino_msg_t msg, int lines, int sel)
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{
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int step;
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if (list.empty())
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return -1;
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if (msg >= CRCInput::RC_MaxRC) {
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printf("CListHelpers:%s: invalid key? 0x%lx\n", __func__, msg);
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return -1;
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}
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int key = (int)msg;
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if (key == g_settings.key_pageup)
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step = -lines;
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else if (key == g_settings.key_pagedown)
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step = lines;
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else if (msg == CRCInput::RC_up)
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step = -1;
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else if (msg == CRCInput::RC_down)
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step = 1;
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else {
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printf("CListHelpers:%s: invalid key? 0x%lx\n", __func__, msg);
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return -1;
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}
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int size = (int)list.size(); /* bigger than 0, because we checked for empty() before */
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// printf("CListHelpers:%s: key 0x%04lx lines %d size %d sel %d\n", __func__, msg, lines, size, sel);
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int new_sel = sel + step;
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if (new_sel < 0) {
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if (sel != 0 && step != 1)
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new_sel = 0;
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else
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new_sel = size - 1;
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}
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else if (new_sel > size - 1) {
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if (sel != size - 1)
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new_sel = size - 1;
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else
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new_sel = 0;
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}
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return new_sel;
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}
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/* all used versions need to be prototyped here, to avoid linker errors */
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template int CListHelpers::UpDownKey<std::vector<CBouquet*> >(std::vector<CBouquet*>, neutrino_msg_t, int, int);
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template int CListHelpers::UpDownKey<std::vector<CZapitBouquet*> >(std::vector<CZapitBouquet*>, neutrino_msg_t, int, int);
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template int CListHelpers::UpDownKey<std::vector<CZapitChannel*> >(std::vector<CZapitChannel*>, neutrino_msg_t, int, int);
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