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//
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// Copyright 2011 TheSeven
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//
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//
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// This file is part of emCORE.
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//
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// emCORE is free software: you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation, either version 2 of the
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// License, or (at your option) any later version.
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//
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// emCORE 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.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with emCORE. If not, see <http://www.gnu.org/licenses/>.
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//
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//
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#include "emcorelib.h"
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#include "libui.h"
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#include "chooser.h"
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#include "chooser_action_handler_wheel.h"
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static int chooser_action_handler_wheel_init(struct chooser_data* data)
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{
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const struct chooser_action_handler_wheel_params* params;
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params = (const struct chooser_action_handler_wheel_params*)(data->info->actionhandlerparams);
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if (params->version != CHOOSER_ACTION_HANDLER_WHEEL_PARAMS_VERSION) return -1;
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return 0;
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}
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static enum chooser_result chooser_action_handler_wheel_handleevent(struct chooser_data* data,
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enum button_event event,
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int which, int value)
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{
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const struct chooser_action_handler_wheel_params* params;
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params = (const struct chooser_action_handler_wheel_params*)(data->info->actionhandlerparams);
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if (params->eventfilter && params->eventfilter(data, event, which, value))
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return CHOOSER_RESULT_OK;
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int spi = params->stepsperitem;
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switch (event)
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{
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case BUTTON_PRESS:
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if (which < params->buttoncount)
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switch (params->buttonmap[which])
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{
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case CHOOSER_ACTION_HANDLER_WHEEL_ACTION_PREV:
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mutex_lock(&data->statemutex, TIMEOUT_BLOCK);
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data->position = MIN(data->info->itemcount * spi,
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MAX(spi, data->position & ~(spi - 1))) - spi / 2;
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data->selected = &data->info->items[data->position / spi];
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mutex_unlock(&data->statemutex);
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return CHOOSER_RESULT_REDRAW;
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case CHOOSER_ACTION_HANDLER_WHEEL_ACTION_NEXT:
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mutex_lock(&data->statemutex, TIMEOUT_BLOCK);
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data->position = MIN(data->info->itemcount * spi,
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MAX(spi, (data->position & ~(spi - 1)) + 2 * spi)) - spi / 2;
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data->selected = &data->info->items[data->position / spi];
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mutex_unlock(&data->statemutex);
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return CHOOSER_RESULT_REDRAW;
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case CHOOSER_ACTION_HANDLER_WHEEL_ACTION_SELECT:
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return CHOOSER_RESULT_FINISHED;
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case CHOOSER_ACTION_HANDLER_WHEEL_ACTION_CANCEL:
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return CHOOSER_RESULT_CANCEL;
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}
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case WHEEL_MOVED_ACCEL:
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mutex_lock(&data->statemutex, TIMEOUT_BLOCK);
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data->position = MIN((data->info->itemcount - 1) * spi, MAX(0, data->position + value));
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data->selected = &data->info->items[data->position / spi];
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mutex_unlock(&data->statemutex);
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return CHOOSER_RESULT_REDRAW;
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}
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return CHOOSER_RESULT_OK;
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}
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static int chooser_action_handler_wheel_stepsperitem(struct chooser_data* data)
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{
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const struct chooser_action_handler_wheel_params* params;
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params = (const struct chooser_action_handler_wheel_params*)(data->info->actionhandlerparams);
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return params->stepsperitem;
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}
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const struct chooser_action_handler chooser_action_handler_wheel =
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{
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.version = CHOOSER_ACTION_HANDLER_VERSION,
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.init = chooser_action_handler_wheel_init,
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.handleevent = chooser_action_handler_wheel_handleevent,
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.handletick = NULL,
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.stepsperitem = chooser_action_handler_wheel_stepsperitem,
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.destroy = NULL
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};
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