radiobutton.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2004-2009 The Mana World Development Team
 * Copyright (C) 2009-2010 The Mana Developers
 * Copyright (C) 2011-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus 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/>.
 */
 
/* _______ __ __ __ ______ __ __ _______ __ __
 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
 *
 *
 * Per Larsson a.k.a finalman
 * Olof Naessén a.k.a jansem/yakslem
 *
 * Visit: http://guichan.sourceforge.net
 *
 * License: (BSD)
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the
 * distribution.
 * 3. Neither the name of Guichan nor the names of its contributors may
 * be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include "gui/widgets/radiobutton.h"
 
#include "settings.h"
 
#include "gui/gui.h"
#include "gui/skin.h"
 
#include "gui/fonts/font.h"
 
#include "render/graphics.h"
 
#include "resources/imagerect.h"
 
#include "resources/image/image.h"
 
#include "debug.h"
 
int RadioButton::instances = 0;
Skin *RadioButton::mSkin = nullptr;
float RadioButton::mAlpha = 1.0;
 
RadioButton::GroupMap RadioButton::mGroupMap;
 
RadioButton::RadioButton(const Widget2 *const widget,
 const std::string &restrict caption,
 const std::string &restrict group,
 const bool marked) :
 Widget(widget),
 MouseListener(),
 KeyListener(),
 WidgetListener(),
 mSelected(false),
 mCaption(),
 mGroup(),
 mTextChunk(),
 mPadding(0),
 mImagePadding(0),
 mImageSize(9),
 mSpacing(2),
 mTextX(0 + 9 + 2),
 mHasMouse(false),
 mTextChanged(true)
{
 mAllowLogic = false;
 setCaption(caption);
 setGroup(group);
 setSelected(marked);
 
 setFocusable(true);
 addMouseListener(this);
 addKeyListener(this);
 
 mForegroundColor = getThemeColor(ThemeColorId::RADIOBUTTON, 255U);
 mForegroundColor2 = getThemeColor(ThemeColorId::RADIOBUTTON_OUTLINE, 255U);
 if (instances == 0)
 {
 if (theme != nullptr)
 {
 mSkin = theme->load("radio.xml",
 "",
 true,
 Theme::getThemePath());
 updateAlpha();
 }
 }
 
 instances++;
 
 if (mSkin != nullptr)
 {
 mPadding = mSkin->getPadding();
 mImagePadding = mSkin->getOption("imagePadding");
 mImageSize = mSkin->getOption("imageSize");
 mSpacing = mSkin->getOption("spacing");
 mTextX = mPadding + mImageSize + mSpacing;
 }
 
 adjustSize();
}
 
RadioButton::~RadioButton()
{
 if (mWindow != nullptr)
 mWindow->removeWidgetListener(this);
 
 setGroup(std::string());
 
 if (gui != nullptr)
 gui->removeDragged(this);
 
 instances--;
 
 if (instances == 0)
 {
 if (theme != nullptr)
 theme->unload(mSkin);
 }
}
 
void RadioButton::updateAlpha()
{
 const float alpha = std::max(settings.guiAlpha,
 theme->getMinimumOpacity());
 
 if (mAlpha != alpha)
 {
 mAlpha = alpha;
 if (mSkin != nullptr)
 {
 const ImageRect &rect = mSkin->getBorder();
 for (int a = 0; a < 4; a ++)
 {
 Image *const image = rect.grid[a];
 if (image != nullptr)
 image->setAlpha(mAlpha);
 }
 }
 }
}
 
void RadioButton::drawBox(Graphics *const graphics)
{
 if (mSkin == nullptr)
 return;
 
 const ImageRect &rect = mSkin->getBorder();
 int index = 0;
 
 if (mEnabled && mVisible == Visible_true)
 {
 if (mSelected)
 {
 if (mHasMouse)
 index = 1;
 else
 index = 0;
 }
 else
 {
 if (mHasMouse)
 index = 3;
 else
 index = 2;
 }
 }
 else
 {
 if (mSelected)
 index = 0;
 else
 index = 2;
 }
 
 const Image *const box = rect.grid[index];
 
 updateAlpha();
 
 if (box != nullptr)
 {
 graphics->drawImage(box,
 mImagePadding,
 (getHeight() - mImageSize) / 2);
 }
}
 
void RadioButton::draw(Graphics *const graphics)
{
 BLOCK_START("RadioButton::draw")
 drawBox(graphics);
 
 Font *const font = getFont();
 
 if (mTextChanged)
 {
 mTextChunk.textFont = font;
 mTextChunk.deleteImage();
 mTextChunk.text = mCaption;
 mTextChunk.color = mForegroundColor;
 mTextChunk.color2 = mForegroundColor2;
 font->generate(mTextChunk);
 mTextChanged = false;
 }
 
 const Image *const image = mTextChunk.img;
 if (image != nullptr)
 graphics->drawImage(image, mTextX, mPadding);
 
 BLOCK_END("RadioButton::draw")
}
 
void RadioButton::safeDraw(Graphics *const graphics)
{
 RadioButton::draw(graphics);
}
 
void RadioButton::mouseEntered(MouseEvent& event A_UNUSED)
{
 mHasMouse = true;
}
 
void RadioButton::mouseExited(MouseEvent& event A_UNUSED)
{
 mHasMouse = false;
}
 
void RadioButton::keyPressed(KeyEvent& event)
{
 const InputActionT action = event.getActionId();
 if (action == InputAction::GUI_SELECT)
 {
 setSelected(true);
 distributeActionEvent();
 event.consume();
 }
}
 
void RadioButton::adjustSize()
{
 Font *const font = getFont();
 setHeight(font->getHeight() + 2 * mPadding);
 setWidth(mImagePadding + mImageSize + mSpacing
 + font->getWidth(mCaption) + mPadding);
}
 
void RadioButton::setSelected(const bool selected)
{
 if (selected && !mGroup.empty())
 {
 for (GroupIterator iter = mGroupMap.lower_bound(mGroup),
 iterEnd = mGroupMap.upper_bound(mGroup);
 iter != iterEnd;
 ++ iter)
 {
 if ((iter->second != nullptr) && iter->second->isSelected())
 iter->second->setSelected(false);
 }
 }
 
 mSelected = selected;
}
 
void RadioButton::mouseClicked(MouseEvent& event)
{
 if (event.getButton() == MouseButton::LEFT)
 {
 setSelected(true);
 event.consume();
 distributeActionEvent();
 }
}
 
void RadioButton::mouseDragged(MouseEvent& event)
{
 event.consume();
}
 
void RadioButton::setGroup(const std::string &group)
{
 if (!mGroup.empty())
 {
 for (GroupIterator iter = mGroupMap.lower_bound(mGroup),
 iterEnd = mGroupMap.upper_bound(mGroup);
 iter != iterEnd;
 ++ iter)
 {
 if (iter->second == this)
 {
 mGroupMap.erase(iter);
 break;
 }
 }
 }
 
 if (!group.empty())
 mGroupMap.insert(std::pair<std::string, RadioButton *>(group, this));
 
 mGroup = group;
}
 
void RadioButton::setCaption(const std::string& caption)
{
 if (caption != mCaption)
 mTextChanged = true;
 mCaption = caption;
}
 
void RadioButton::setParent(Widget *widget)
{
 if (mWindow != nullptr)
 mWindow->addWidgetListener(this);
 Widget::setParent(widget);
}
 
void RadioButton::widgetHidden(const Event &event A_UNUSED)
{
 mTextChanged = true;
 mTextChunk.deleteImage();
}
 
void RadioButton::setWindow(Widget *const widget)
{
 if ((widget == nullptr) && (mWindow != nullptr))
 {
 mWindow->removeWidgetListener(this);
 mWindow = nullptr;
 }
 else
 {
 Widget2::setWindow(widget);
 }
}