Guichan library and few examples, by Lubomyr
This commit is contained in:
Sergii Pylypenko
284
project/jni/guichan/src/widgets/button.cpp
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284
project/jni/guichan/src/widgets/button.cpp
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/* _______ __ __ __ ______ __ __ _______ __ __
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* / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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* / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
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* / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
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* / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
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* /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
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* \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
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*
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* Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
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*
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*
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* Per Larsson a.k.a finalman
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* Olof Naessén a.k.a jansem/yakslem
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*
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* Visit: http://guichan.sourceforge.net
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*
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* License: (BSD)
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Guichan nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* For comments regarding functions please see the header file.
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*/
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#include "guichan/widgets/button.hpp"
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#include "guichan/exception.hpp"
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#include "guichan/font.hpp"
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#include "guichan/graphics.hpp"
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#include "guichan/key.hpp"
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#include "guichan/mouseevent.hpp"
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#include "guichan/mouseinput.hpp"
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namespace gcn
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{
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Button::Button()
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: mHasMouse(false),
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mKeyPressed(false),
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mMousePressed(false),
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mAlignment(Graphics::CENTER),
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mSpacing(4)
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{
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setFocusable(true);
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adjustSize();
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setFrameSize(1);
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addMouseListener(this);
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addKeyListener(this);
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addFocusListener(this);
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}
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Button::Button(const std::string& caption)
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: mCaption(caption),
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mHasMouse(false),
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mKeyPressed(false),
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mMousePressed(false),
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mAlignment(Graphics::CENTER),
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mSpacing(4)
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{
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setFocusable(true);
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adjustSize();
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setFrameSize(1);
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addMouseListener(this);
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addKeyListener(this);
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addFocusListener(this);
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}
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void Button::setCaption(const std::string& caption)
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{
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mCaption = caption;
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}
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const std::string& Button::getCaption() const
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{
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return mCaption;
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}
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void Button::setAlignment(Graphics::Alignment alignment)
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{
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mAlignment = alignment;
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}
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Graphics::Alignment Button::getAlignment() const
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{
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return mAlignment;
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}
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void Button::setSpacing(unsigned int spacing)
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{
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mSpacing = spacing;
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}
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unsigned int Button::getSpacing() const
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{
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return mSpacing;
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}
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void Button::draw(Graphics* graphics)
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{
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Color faceColor = getBaseColor();
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Color highlightColor, shadowColor;
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int alpha = getBaseColor().a;
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if (isPressed())
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{
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faceColor = faceColor - 0x303030;
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faceColor.a = alpha;
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highlightColor = faceColor - 0x303030;
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highlightColor.a = alpha;
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shadowColor = faceColor + 0x303030;
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shadowColor.a = alpha;
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}
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else
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{
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highlightColor = faceColor + 0x303030;
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highlightColor.a = alpha;
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shadowColor = faceColor - 0x303030;
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shadowColor.a = alpha;
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}
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graphics->setColor(faceColor);
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graphics->fillRectangle(Rectangle(1, 1, getDimension().width-1, getHeight() - 1));
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graphics->setColor(highlightColor);
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graphics->drawLine(0, 0, getWidth() - 1, 0);
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graphics->drawLine(0, 1, 0, getHeight() - 1);
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graphics->setColor(shadowColor);
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graphics->drawLine(getWidth() - 1, 1, getWidth() - 1, getHeight() - 1);
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graphics->drawLine(1, getHeight() - 1, getWidth() - 1, getHeight() - 1);
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graphics->setColor(getForegroundColor());
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int textX;
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int textY = getHeight() / 2 - getFont()->getHeight() / 2;
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switch (getAlignment())
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{
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case Graphics::LEFT:
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textX = mSpacing;
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break;
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case Graphics::CENTER:
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textX = getWidth() / 2;
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break;
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case Graphics::RIGHT:
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textX = getWidth() - mSpacing;
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break;
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default:
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throw GCN_EXCEPTION("Unknown alignment.");
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}
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graphics->setFont(getFont());
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if (isPressed())
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{
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graphics->drawText(getCaption(), textX + 1, textY + 1, getAlignment());
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}
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else
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{
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graphics->drawText(getCaption(), textX, textY, getAlignment());
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if (isFocused())
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{
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graphics->drawRectangle(Rectangle(2, 2, getWidth() - 4,
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getHeight() - 4));
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}
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}
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}
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void Button::adjustSize()
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{
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setWidth(getFont()->getWidth(mCaption) + 2*mSpacing);
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setHeight(getFont()->getHeight() + 2*mSpacing);
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}
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bool Button::isPressed() const
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{
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if (mMousePressed)
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{
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return mHasMouse;
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}
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else
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{
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return mKeyPressed;
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}
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}
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void Button::mousePressed(MouseEvent& mouseEvent)
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{
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if (mouseEvent.getButton() == MouseEvent::LEFT)
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{
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mMousePressed = true;
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mouseEvent.consume();
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}
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}
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void Button::mouseExited(MouseEvent& mouseEvent)
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{
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mHasMouse = false;
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}
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void Button::mouseEntered(MouseEvent& mouseEvent)
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{
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mHasMouse = true;
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}
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void Button::mouseReleased(MouseEvent& mouseEvent)
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{
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if (mouseEvent.getButton() == MouseEvent::LEFT
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&& mMousePressed
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&& mHasMouse)
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{
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mMousePressed = false;
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distributeActionEvent();
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mouseEvent.consume();
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}
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else if (mouseEvent.getButton() == MouseEvent::LEFT)
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{
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mMousePressed = false;
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mouseEvent.consume();
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}
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}
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void Button::mouseDragged(MouseEvent& mouseEvent)
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{
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mouseEvent.consume();
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}
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void Button::keyPressed(KeyEvent& keyEvent)
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{
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Key key = keyEvent.getKey();
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if (key.getValue() == Key::ENTER
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|| key.getValue() == Key::SPACE)
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{
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mKeyPressed = true;
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keyEvent.consume();
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}
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}
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void Button::keyReleased(KeyEvent& keyEvent)
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{
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Key key = keyEvent.getKey();
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if ((key.getValue() == Key::ENTER
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|| key.getValue() == Key::SPACE)
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&& mKeyPressed)
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{
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mKeyPressed = false;
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distributeActionEvent();
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keyEvent.consume();
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}
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}
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void Button::focusLost(const Event& event)
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{
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mMousePressed = false;
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mKeyPressed = false;
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}
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}
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