File indexing completed on 2024-04-28 07:52:38

 /*
     SPDX-FileCopyrightText: 2007 Riccardo Iaconelli <ruphy@fsfe.org>
     SPDX-FileCopyrightText: 2007 Paolo Capriotti <p.capriotti@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "button.h"
 
 #include <QPainter>
 #include <QPen>
 #include "knavalbattle_debug.h"
 
 #include <math.h> // fabs
 
 #include "animator.h"
 
 Button::Button(QGraphicsItem* parent, const QIcon& icon, 
                const QFont& font, const QString& text)
 : QGraphicsObject(parent)
 , m_icon(icon)
 , m_font(font)
 , m_text(text)
 , m_fixed_width(false)
 , m_down(false)
 , m_hover(false)
 , m_brightness(BRIGHTNESS_NORMAL)
 , m_editor(nullptr)
 {
     computeSize();
 }
 
 Button::~Button()
 {
     if (m_animation) {
         m_animation->abort();
     }
     //delete m_editor;
 }
 
 void Button::setWidth(int width)
 {
     m_fixed_width = width != -1;
     m_size.setWidth(width);
     computeSize();
 }
 
 void Button::computeSize()
 {
     QFontMetrics fm(m_font);
     m_text_width = fm.boundingRect(m_text).width();
     int h = fm.height();
     if (h < 32) {
         h = 32;
     }
     if (!m_fixed_width) {        
         m_size = QSize(m_text_width, h);
         m_size.rwidth() += 10 + 32 + 10 + 10;
     }
     else {
         m_size.setHeight(h);
     }
     
     m_size.rheight() += 10 + 10;
 }
 
 void Button::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *)
 {
     QPen pen(QColor(200, 200, 220, 255));
     pen.setWidth(2);
 
     p->setPen(pen);
     p->setRenderHint(QPainter::Antialiasing);
     p->setBrush(QBrush(QColor(static_cast<int>(m_brightness),
                              static_cast<int>(m_brightness),
                              static_cast<int>(m_brightness), 100)));
 
     p->drawRoundedRect(1, 1,
                      m_size.width() - 2,
                      m_size.height() - 2,
                      2000 / m_size.width(),
                      2000 / m_size.height(), Qt::RelativeSize);
 
     p->drawPixmap(10,                        // x coordinate of the icon.
                   m_size.height() / 2 - 16,  // y coordinate of the icon.
                   32,                        // Icon's width.
                   32,                        // Icon's height.
                   m_icon.pixmap(32, 32));    // Icon's pixmap source.
 
     p->setFont(m_font);
 
     // 42 is the distance from the button's left margin to the
     // icon's right margin. The icon's x coordinate is 10 and its
     // width is 32.
     qreal x = boundingRect().x() + 42;
     qreal y = boundingRect().y();
     qreal w = boundingRect().width() - 42;
     qreal h = boundingRect().height();
 
     // This is the rectangle which ranges from the icon's right margin
     // to the button's right margin.
     QRectF rect(x, y, w, h);
 
     p->drawText(rect, Qt::AlignLeft | Qt::AlignVCenter, m_text);
     // updateEditor();
 }
 
 QRectF Button::boundingRect() const
 {
     return QRectF(1, 1, m_size.width() - 2, m_size.height() - 2);
 }
 
 QSize Button::size() const
 {
     return m_size;
 }
 
 void Button::onMousePress()
 {
     if (!m_down) {
         m_down = true;
         if (m_animation) {
             m_animation->abort();
         }
         m_brightness = BRIGHTNESS_DOWN;
         
         update();
     }
 }
 
 void Button::onMouseRelease()
 {
     if (m_down) {
         m_down = false;
         if (m_animation) {
             m_animation->abort();
         }
         m_brightness = BRIGHTNESS_NORMAL;
         update();
     }
 }
 
 void Button::onMouseMove()
 {
     if (!m_hover) {
         m_hover = true;
         
         if (m_down) {
             if (m_animation) {
                 m_animation->abort();
             }
             m_brightness = BRIGHTNESS_HOVER;
         }
         else if (m_animation) {
             m_animation->setBrightness(BRIGHTNESS_HOVER);
         }
         else {
             m_animation = new ButtonAnimation(this, BRIGHTNESS_HOVER);
             Animator::instance()->add(m_animation);
         }
         
         update();
     }
 }
 
 void Button::onMouseLeave()
 {
     if (m_hover) {
         m_hover = false;
         
         if (m_down) {
             if (m_animation) {
                 m_animation->abort();
             }
             m_brightness = BRIGHTNESS_NORMAL;
         }
         else if (m_animation) {
             m_animation->setBrightness(BRIGHTNESS_NORMAL);
         }
         else {
             m_animation = new ButtonAnimation(this, BRIGHTNESS_NORMAL);
             Animator::instance()->add(m_animation);
         }
         
         update();
     }
 }
 
 bool Button::onClicked()
 {
     if (true) {
         qCDebug(KNAVALBATTLE_LOG) << "clicked";
         Q_EMIT clicked();
         return true;
     }
     else {
         return false;
     }
 }
 
 void Button::setText(const QString& text)
 {
     m_text = text;
     update();
 }
 
 double Button::brightness() const
 {
     return m_brightness;
 }
 
 void Button::setBrightness(double value)
 {
     m_brightness = value;
     update();
 }
 
 // ------------
 
 double ButtonAnimation::m_speed = 0.46;
 
 ButtonAnimation::ButtonAnimation(Button* button, int brightness)
 : m_button(button)
 , m_brightness(brightness)
 {
     m_last = -1;
 }
 
 void ButtonAnimation::start(int t)
 {
     m_last = t;
 }
 
 bool ButtonAnimation::step(int t)
 {
     if (m_last == -1) {
         return true;
     }
     
     int sign = (m_button->brightness() > m_brightness) ? -1 : 1;
     double delta = (t - m_last) * m_speed;
 //     qCDebug(KNAVALBATTLE_LOG) << "button step t =" << t << "sign =" << sign <<  "delta =" << delta;
     m_last = t;
     if (fabs(m_button->brightness() - m_brightness) <= delta) {
         m_button->setBrightness(m_brightness);
         return true;
     }
     else {
         m_button->setBrightness(m_button->brightness() + sign * delta);
         return false;
     }
 }
 
 void ButtonAnimation::abort()
 {
     m_last = -1;
 }
 
 void ButtonAnimation::setBrightness(int value)
 {
     m_brightness = value;
 }
 
 ButtonAnimation::~ButtonAnimation()
 {
 }
 
 #include "moc_button.cpp"