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Copy pathBattlescapeButton.cpp
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238 lines (219 loc) · 5.61 KB
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/*
* Copyright 2010-2015 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom 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.
*
* OpenXcom 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 OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#include "BattlescapeButton.h"
#include "../Engine/Action.h"
namespace OpenXcom
{
/**
* Sets up a battlescape button with the specified size and position.
* @param width Width in pixels.
* @param height Height in pixels.
* @param x X position in pixels.
* @param y Y position in pixels.
*/
BattlescapeButton::BattlescapeButton(int width, int height, int x, int y) : InteractiveSurface(width, height, x, y), _color(0), _group(0), _inverted(false), _toggleMode(INVERT_NONE), _altSurface(0)
{
}
/**
*
*/
BattlescapeButton::~BattlescapeButton()
{
delete _altSurface;
}
/**
* Changes the color for the battlescape button.
* @param color Color value.
*/
void BattlescapeButton::setColor(Uint8 color)
{
_color = color;
}
/**
* Returns the color for the battlescape button.
* @return Color value.
*/
Uint8 BattlescapeButton::getColor() const
{
return _color;
}
/**
* Changes the button group this battlescape button belongs to.
* @param group Pointer to the pressed button pointer in the group.
* Null makes it a regular button.
*/
void BattlescapeButton::setGroup(BattlescapeButton **group)
{
_group = group;
if (_group != 0 && *_group == this)
_inverted = true;
}
/**
* Sets the button as the pressed button if it's part of a group,
* and inverts the colors when pressed.
* @param action Pointer to an action.
* @param state State that the action handlers belong to.
*/
void BattlescapeButton::mousePress(Action *action, State *state)
{
if (_group != 0)
{
if (action->getDetails()->button.button == SDL_BUTTON_LEFT)
{
(*_group)->toggle(false);
*_group = this;
_inverted = true;
}
}
else if ((_tftdMode || _toggleMode == INVERT_CLICK ) && !_inverted && isButtonPressed() && isButtonHandled(action->getDetails()->button.button))
{
_inverted = true;
}
InteractiveSurface::mousePress(action, state);
}
/*
* Sets the button as the released button if it's part of a group.
* @param action Pointer to an action.
* @param state State that the action handlers belong to.
*/
void BattlescapeButton::mouseRelease(Action *action, State *state)
{
if (_inverted && isButtonHandled(action->getDetails()->button.button))
{
_inverted = false;
}
InteractiveSurface::mouseRelease(action, state);
}
/**
* Invert a button explicitly either ON or OFF and keep track of the state using our internal variables.
* @param press Set this button as pressed.
*/
void BattlescapeButton::toggle(bool press)
{
if (_tftdMode || _toggleMode == INVERT_TOGGLE || _inverted)
{
_inverted = press;
}
}
/**
* Toggle inversion mode: click to press, click to unpress.
*/
void BattlescapeButton::allowToggleInversion()
{
_toggleMode = INVERT_TOGGLE;
}
/**
* Click inversion mode: click to press, release to unpress.
*/
void BattlescapeButton::allowClickInversion()
{
_toggleMode = INVERT_CLICK;
}
/**
* Initializes the alternate surface for swapping out as needed.
* performs a colour swap for TFTD style buttons, and a palette inversion for coloured buttons
* we use two separate surfaces because it's far easier to keep track of
* whether or not this surface is inverted.
*/
void BattlescapeButton::initSurfaces()
{
delete _altSurface;
_altSurface = new Surface(_surface->w, _surface->h, _x, _y);
_altSurface->setPalette(getPalette());
// Lock the surface
_altSurface->lock();
// tftd mode: use a colour lookup table instead of simple palette inversion for our "pressed" state
if (_tftdMode)
{
// this is our colour lookup table
const int colorFrom[] = {1, 2, 3, 4, 7, 8, 31, 47, 153, 156, 159};
const int colorTo[] = {2, 3, 4, 5, 11, 10, 2, 2, 96, 9, 97};
for (int x = 0, y = 0; x < getWidth() && y < getHeight();)
{
Uint8 pixel = getPixel(x, y);
for (int i = 0; i != sizeof(colorFrom)/sizeof(colorFrom[0]); ++i)
{
if (pixel == colorFrom[i])
{
pixel = colorTo[i];
break;
}
}
_altSurface->setPixelIterative(&x, &y, pixel);
}
}
else
{
for (int x = 0, y = 0; x < getWidth() && y < getHeight();)
{
Uint8 pixel = getPixel(x, y);
if (pixel > 0)
{
_altSurface->setPixelIterative(&x, &y, pixel + 2 * ((int)_color + 3 - (int)pixel));
}
else
{
_altSurface->setPixelIterative(&x, &y, 0);
}
}
}
// Unlock the surface
_altSurface->unlock();
}
/**
* Blits this surface or the alternate surface onto another one,
* depending on whether the button is "pressed" or not.
* @param surface Pointer to surface to blit onto.
*/
void BattlescapeButton::blit(Surface *surface)
{
if (_inverted)
{
_altSurface->blit(surface);
}
else
{
Surface::blit(surface);
}
}
/**
* Changes the position of the surface in the X axis.
* @param x X position in pixels.
*/
void BattlescapeButton::setX(int x)
{
Surface::setX(x);
if (_altSurface)
{
_altSurface->setX(x);
}
}
/**
* Changes the position of the surface in the Y axis.
* @param y Y position in pixels.
*/
void BattlescapeButton::setY(int y)
{
Surface::setY(y);
if (_altSurface)
{
_altSurface->setY(y);
}
}
}