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/*
* The Mana Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
*
* This file is part of The Mana Client.
*
* 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 2 of the License, or
* 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/widgets/button.h"
#include "configuration.h"
#include "graphics.h"
#include "gui/palette.h"
#include "gui/theme.h"
#include "resources/image.h"
#include "utils/dtor.h"
#include <guichan/exception.hpp>
#include <guichan/font.hpp>
int Button::mInstances = 0;
float Button::mAlpha = 1.0;
enum{
BUTTON_STANDARD, // 0
BUTTON_HIGHLIGHTED, // 1
BUTTON_PRESSED, // 2
BUTTON_DISABLED, // 3
BUTTON_COUNT // 4 - Must be last.
};
struct ButtonData
{
char const *file;
int gridX;
int gridY;
};
static ButtonData const data[BUTTON_COUNT] = {
{ "button.png", 0, 0 },
{ "buttonhi.png", 9, 4 },
{ "buttonpress.png", 16, 19 },
{ "button_disabled.png", 25, 23 }
};
ImageRect Button::button[BUTTON_COUNT];
Button::Button()
{
init();
}
Button::Button(const std::string &caption, const std::string &actionEventId,
gcn::ActionListener *listener):
gcn::Button(caption)
{
init();
setActionEventId(actionEventId);
if (listener)
addActionListener(listener);
}
void Button::init()
{
setFrameSize(0);
if (mInstances == 0)
{
// Load the skin
Image *btn[BUTTON_COUNT];
int a, x, y, mode;
for (mode = 0; mode < BUTTON_COUNT; mode++)
{
btn[mode] = Theme::getImageFromTheme(data[mode].file);
a = 0;
for (y = 0; y < 3; y++)
{
for (x = 0; x < 3; x++)
{
button[mode].grid[a] = btn[mode]->getSubImage(
data[x].gridX, data[y].gridY,
data[x + 1].gridX - data[x].gridX + 1,
data[y + 1].gridY - data[y].gridY + 1);
a++;
}
}
btn[mode]->decRef();
}
updateAlpha();
}
mInstances++;
}
Button::~Button()
{
mInstances--;
if (mInstances == 0)
{
for (int mode = 0; mode < BUTTON_COUNT; mode++)
{
for_each(button[mode].grid, button[mode].grid + 9, dtor<Image*>());
}
}
}
void Button::updateAlpha()
{
float alpha = std::max(config.getValue("guialpha", 0.8f),
(double) Theme::instance()->getMinimumOpacity());
if (mAlpha != alpha)
{
mAlpha = alpha;
for (int a = 0; a < 9; a++)
{
button[BUTTON_DISABLED].grid[a]->setAlpha(mAlpha);
button[BUTTON_PRESSED].grid[a]->setAlpha(mAlpha);
button[BUTTON_HIGHLIGHTED].grid[a]->setAlpha(mAlpha);
button[BUTTON_STANDARD].grid[a]->setAlpha(mAlpha);
}
}
}
void Button::draw(gcn::Graphics *graphics)
{
int mode;
if (!isEnabled())
mode = BUTTON_DISABLED;
else if (isPressed())
mode = BUTTON_PRESSED;
else if (mHasMouse || isFocused())
mode = BUTTON_HIGHLIGHTED;
else
mode = BUTTON_STANDARD;
updateAlpha();
static_cast<Graphics*>(graphics)->
drawImageRect(0, 0, getWidth(), getHeight(), button[mode]);
if (mode == BUTTON_DISABLED)
graphics->setColor(guiPalette->getColor(Palette::BUTTON_DISABLED));
else
graphics->setColor(guiPalette->getColor(Palette::BUTTON));
int textX;
int textY = getHeight() / 2 - getFont()->getHeight() / 2;
switch (getAlignment())
{
case gcn::Graphics::LEFT:
textX = 4;
break;
case gcn::Graphics::CENTER:
textX = getWidth() / 2;
break;
case gcn::Graphics::RIGHT:
textX = getWidth() - 4;
break;
default:
throw GCN_EXCEPTION("Button::draw. Unknown alignment.");
}
graphics->setFont(getFont());
if (isPressed())
graphics->drawText(getCaption(), textX + 1, textY + 1, getAlignment());
else
graphics->drawText(getCaption(), textX, textY, getAlignment());
}
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