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/*
* Copyright 2010-2016 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 "ComboBox.h"
#include <algorithm>
#include "TextButton.h"
#include "Window.h"
#include "TextList.h"
#include "../Engine/State.h"
#include "../Engine/Language.h"
#include "../Engine/Font.h"
#include "../Engine/Action.h"
#include "../Engine/Options.h"
#include "../Engine/Screen.h"
namespace OpenXcom
{
const int ComboBox::HORIZONTAL_MARGIN = 2;
const int ComboBox::VERTICAL_MARGIN = 3;
const int ComboBox::MAX_ITEMS = 10;
const int ComboBox::BUTTON_WIDTH = 14;
const int ComboBox::TEXT_HEIGHT = 8;
static int getPopupWindowY(int buttonHeight, int buttonY, int popupHeight, bool popupAboveButton)
{
int belowButtonY = buttonY + buttonHeight;
if (popupAboveButton)
{
// used when popup list won't fit below the button; display it above
return buttonY - popupHeight;
}
return belowButtonY;
}
/**
* Sets up a combobox with the specified size and position.
* @param state Pointer to state the combobox belongs to.
* @param width Width in pixels.
* @param height Height in pixels.
* @param x X position in pixels.
* @param y Y position in pixels.
*/
ComboBox::ComboBox(State *state, int width, int height, int x, int y, bool popupAboveButton) : InteractiveSurface(width, height, x, y), _change(0), _sel(0), _state(state), _lang(0), _toggled(false), _popupAboveButton(popupAboveButton)
{
_button = new TextButton(width, height, x, y);
_button->setComboBox(this);
_arrow = new Surface(11, 8, x + width - BUTTON_WIDTH, y + 4);
int popupHeight = MAX_ITEMS * TEXT_HEIGHT + VERTICAL_MARGIN * 2;
int popupY = getPopupWindowY(height, y, popupHeight, popupAboveButton);
_window = new Window(state, width, popupHeight, x, popupY);
_window->setThinBorder();
_list = new TextList(width - HORIZONTAL_MARGIN * 2 - BUTTON_WIDTH + 1,
popupHeight - (VERTICAL_MARGIN * 2 + 2),
x + HORIZONTAL_MARGIN,
popupY + VERTICAL_MARGIN);
_list->setComboBox(this);
_list->setColumns(1, _list->getWidth());
_list->setSelectable(true);
_list->setBackground(_window);
_list->setAlign(ALIGN_CENTER);
_list->setScrolling(true, 0);
toggle(true);
}
/**
* Deletes all the stuff contained in the list.
*/
ComboBox::~ComboBox()
{
delete _button;
delete _arrow;
delete _window;
delete _list;
}
/**
* Changes the position of the surface in the X axis.
* @param x X position in pixels.
*/
void ComboBox::setX(int x)
{
Surface::setX(x);
_button->setX(x);
_arrow->setX(x + getWidth() - BUTTON_WIDTH);
_window->setX(x);
_list->setX(x + HORIZONTAL_MARGIN);
}
/**
* Changes the position of the surface in the Y axis.
* @param y Y position in pixels.
*/
void ComboBox::setY(int y)
{
Surface::setY(y);
_button->setY(y);
_arrow->setY(y + 4);
int popupHeight = _window->getHeight();
int popupY = getPopupWindowY(getHeight(), y, popupHeight, _popupAboveButton);
_window->setY(popupY);
_list->setY(popupY + VERTICAL_MARGIN);
}
/**
* Replaces a certain amount of colors in the palette of all
* the text contained in the list.
* @param colors Pointer to the set of colors.
* @param firstcolor Offset of the first color to replace.
* @param ncolors Amount of colors to replace.
*/
void ComboBox::setPalette(SDL_Color *colors, int firstcolor, int ncolors)
{
Surface::setPalette(colors, firstcolor, ncolors);
_button->setPalette(colors, firstcolor, ncolors);
_arrow->setPalette(colors, firstcolor, ncolors);
_window->setPalette(colors, firstcolor, ncolors);
_list->setPalette(colors, firstcolor, ncolors);
}
/**
* Changes the resources for the text in the combo box.
* @param big Pointer to large-size font.
* @param small Pointer to small-size font.
* @param lang Pointer to current language.
*/
void ComboBox::initText(Font *big, Font *small, Language *lang)
{
_lang = lang;
_button->initText(big, small, lang);
_list->initText(big, small, lang);
}
/**
* Changes the surface used to draw the background of the combo box.
* @param bg New background.
*/
void ComboBox::setBackground(Surface *bg)
{
_window->setBackground(bg);
}
/**
* Changes the color used to draw the combo box.
* @param color Color value.
*/
void ComboBox::setColor(Uint8 color)
{
_color = color;
drawArrow();
_button->setColor(_color);
_window->setColor(_color);
_list->setColor(_color);
}
/**
* Returns the color used to draw the combo box.
* @return Color value.
*/
Uint8 ComboBox::getColor() const
{
return _color;
}
/**
* Draws the arrow used to indicate the combo box.
*/
void ComboBox::drawArrow()
{
_arrow->clear();
SDL_Rect square;
int color = _color + 1;
if (color == 256)
color++;
// Draw arrow triangle 1
square.x = 1;
square.y = 2;
square.w = 9;
square.h = 1;
for (; square.w > 1; square.w -= 2)
{
_arrow->drawRect(&square, color + 2);
square.x++;
square.y++;
}
_arrow->drawRect(&square, color + 2);
// Draw arrow triangle 2
square.x = 2;
square.y = 2;
square.w = 7;
square.h = 1;
for (; square.w > 1; square.w -= 2)
{
_arrow->drawRect(&square, color);
square.x++;
square.y++;
}
_arrow->drawRect(&square, color);
}
/**
* Enables/disables high contrast color. Mostly used for
* Battlescape UI.
* @param contrast High contrast setting.
*/
void ComboBox::setHighContrast(bool contrast)
{
_button->setHighContrast(contrast);
_window->setHighContrast(contrast);
_list->setHighContrast(contrast);
}
/**
* Changes the color of the arrow buttons in the list.
* @param color Color value.
*/
void ComboBox::setArrowColor(Uint8 color)
{
_list->setArrowColor(color);
}
/**
* Returns the currently selected option.
* @return Selected row.
*/
size_t ComboBox::getSelected() const
{
return _sel;
}
size_t ComboBox::getHoveredListIdx() const
{
size_t ret = -1;
if (_list->getVisible())
{
ret = _list->getSelectedRow();
}
if ((size_t)-1 == ret)
{
ret = _sel;
}
return ret;
}
/**
* sets the button text independent of the currently selected option.
* @param text the text to display
*/
void ComboBox::setText(const std::string &text)
{
_button->setText(text);
}
/**
* Changes the currently selected option.
* @param sel Selected row.
*/
void ComboBox::setSelected(size_t sel)
{
_sel = sel;
if (_sel < _list->getTexts())
{
_button->setText(_list->getCellText(_sel, 0));
}
}
/**
* Updates the size of the dropdown list based on
* the number of options available.
* @param options Number of options.
*/
void ComboBox::setDropdown(int options)
{
int items = std::min(options, MAX_ITEMS);
int h = _button->getFont()->getHeight() + _button->getFont()->getSpacing();
int dy = (Options::baseYResolution - 200) / 2;
while (_window->getY() + items * h + VERTICAL_MARGIN * 2 > 200 + dy)
{
items--;
}
int popupHeight = items * h + VERTICAL_MARGIN * 2;
int popupY = getPopupWindowY(getHeight(), getY(), popupHeight, _popupAboveButton);
_window->setY(popupY);
_window->setHeight(popupHeight);
_list->setY(popupY + VERTICAL_MARGIN);
_list->setHeight(items * h);
}
/**
* Changes the list of available options to choose from.
* @param options List of strings.
* @param translate True for a list of string IDs, false for a list of raw strings.
*/
void ComboBox::setOptions(const std::vector<std::string> &options, bool translate)
{
setDropdown(options.size());
_list->clearList();
for (std::vector<std::string>::const_iterator i = options.begin(); i != options.end(); ++i)
{
if (translate)
_list->addRow(1, _lang->getString(*i).c_str());
else
_list->addRow(1, i->c_str());
}
setSelected(_sel);
}
/**
* Blits the combo box components.
* @param surface Pointer to surface to blit onto.
*/
void ComboBox::blit(Surface *surface)
{
Surface::blit(surface);
_list->invalidate();
if (_visible && !_hidden)
{
_button->blit(surface);
_arrow->blit(surface);
_window->blit(surface);
_list->blit(surface);
}
}
/**
* Passes events to internal components.
* @param action Pointer to an action.
* @param state State that the action handlers belong to.
*/
void ComboBox::handle(Action *action, State *state)
{
_button->handle(action, state);
_list->handle(action, state);
InteractiveSurface::handle(action, state);
int topY = std::min(getY(), _window->getY());
if (_window->getVisible() && action->getDetails()->type == SDL_MOUSEBUTTONDOWN &&
(action->getAbsoluteXMouse() < getX() || action->getAbsoluteXMouse() >= getX() + getWidth() ||
action->getAbsoluteYMouse() < topY || action->getAbsoluteYMouse() >= topY + getHeight() + _window->getHeight()))
{
toggle();
}
if (_toggled)
{
if (_change)
{
(state->*_change)(action);
}
_toggled = false;
}
}
/**
* Passes ticks to arrow buttons.
*/
void ComboBox::think()
{
_button->think();
_arrow->think();
_window->think();
_list->think();
InteractiveSurface::think();
}
/**
* Opens/closes the combo box list.
* @param first Is it the initialization toggle?
*/
void ComboBox::toggle(bool first)
{
_window->setVisible(!_window->getVisible());
_list->setVisible(!_list->getVisible());
_state->setModal(_window->getVisible() ? this : 0);
if (!first && !_window->getVisible())
{
_toggled = true;
}
if (_list->getVisible())
{
if (_sel < _list->getVisibleRows()/2)
{
_list->scrollTo(0);
}
else
{
_list->scrollTo(_sel - _list->getVisibleRows()/2);
}
}
}
/**
* Sets a function to be called every time the slider's value changes.
* @param handler Action handler.
*/
void ComboBox::onChange(ActionHandler handler)
{
_change = handler;
}
/**
* Sets a function to be called every time the mouse moves in to the listbox surface.
* @param handler Action handler.
*/
void ComboBox::onListMouseIn(ActionHandler handler)
{
_list->onMouseIn(handler);
}
/**
* Sets a function to be called every time the mouse moves out of the listbox surface.
* @param handler Action handler.
*/
void ComboBox::onListMouseOut(ActionHandler handler)
{
_list->onMouseOut(handler);
}
/**
* Sets a function to be called every time the mouse moves over the listbox surface.
* @param handler Action handler.
*/
void ComboBox::onListMouseOver(ActionHandler handler)
{
_list->onMouseOver(handler);
}
}