libgui/source/gui/GuiDragListener.cpp
2020-08-13 12:58:19 +02:00

81 lines
2.4 KiB
C++

/****************************************************************************
* Copyright (C) 2016 Maschell
* based on GuiButton by dimok
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
****************************************************************************/
#include <gui/GuiDragListener.h>
#include <gui/GuiController.h>
/**
* Constructor for the GuiDragListener class.
*/
GuiDragListener::GuiDragListener(float w, float h) {
width = w;
height = h;
for (int32_t i = 0; i < iMaxGuiTriggers; i++) {
trigger[i] = NULL;
}
}
/**
* Destructor for the GuiDragListener class.
*/
GuiDragListener::~GuiDragListener() {
}
void GuiDragListener::setState(int32_t i, int32_t c) {
GuiElement::setState(i, c);
}
void GuiDragListener::setTrigger(GuiTrigger *t, int32_t idx) {
if (idx >= 0 && idx < iMaxGuiTriggers) {
trigger[idx] = t;
} else {
for (int32_t i = 0; i < iMaxGuiTriggers; i++) {
if (!trigger[i]) {
trigger[i] = t;
break;
}
}
}
}
void GuiDragListener::update(GuiController *c) {
if (!c || isStateSet(STATE_DISABLED | STATE_HIDDEN | STATE_DISABLE_INPUT, c->chanIdx)) {
return;
} else if (parentElement && (parentElement->isStateSet(STATE_DISABLED | STATE_HIDDEN | STATE_DISABLE_INPUT, c->chanIdx))) {
return;
}
for (int32_t i = 0; i < iMaxGuiTriggers; i++) {
if (!trigger[i]) {
continue;
}
bool isHeld = trigger[i]->held(c);
if (isHeld && this->isInside(c->data.x, c->data.y)) {
int32_t dx = c->data.x - c->lastData.x;
int32_t dy = c->data.y - c->lastData.y;
if (dx == 0 && dy == 0) { continue; }
dragged(this, c, trigger[i], dx, dy);
}
}
}