mirror of
https://github.com/vcmi/vcmi.git
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299 lines
6.5 KiB
C++
299 lines
6.5 KiB
C++
/*
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* Slider.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "Slider.h"
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#include "Buttons.h"
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#include "../gui/MouseButton.h"
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#include "../gui/Shortcut.h"
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#include "../gui/CGuiHandler.h"
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#include "../render/Canvas.h"
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void CSlider::mouseDragged(const Point & cursorPosition, const Point & lastUpdateDistance)
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{
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double v = 0;
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if(getOrientation() == Orientation::HORIZONTAL)
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{
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v = cursorPosition.x - pos.x - 24;
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v *= positions;
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v /= (pos.w - 48);
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}
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else
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{
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v = cursorPosition.y - pos.y - 24;
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v *= positions;
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v /= (pos.h - 48);
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}
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v += 0.5;
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if(v!=value)
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{
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scrollTo(static_cast<int>(v));
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}
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}
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void CSlider::gesturePanning(const Point & initialPosition, const Point & currentPosition, const Point & lastUpdateDistance)
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{
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if (getOrientation() == Orientation::VERTICAL)
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Scrollable::gesturePanning(initialPosition, currentPosition, lastUpdateDistance);
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else
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mouseDragged(currentPosition, lastUpdateDistance);
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}
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void CSlider::setScrollBounds(const Rect & bounds )
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{
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scrollBounds = bounds;
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}
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void CSlider::clearScrollBounds()
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{
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scrollBounds = std::nullopt;
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}
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int CSlider::getAmount() const
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{
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return amount;
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}
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int CSlider::getValue() const
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{
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return value;
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}
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int CSlider::getCapacity() const
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{
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return capacity;
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}
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void CSlider::scrollBy(int amount)
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{
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scrollTo(value + amount);
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}
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void CSlider::updateSliderPos()
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{
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if(getOrientation() == Orientation::HORIZONTAL)
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{
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if(positions)
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{
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double part = static_cast<double>(value) / positions;
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part*=(pos.w-48);
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int newPos = static_cast<int>(part + pos.x + 16 - slider->pos.x);
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slider->moveBy(Point(newPos, 0));
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}
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else
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slider->moveTo(Point(pos.x+16, pos.y));
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}
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else
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{
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if(positions)
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{
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double part = static_cast<double>(value) / positions;
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part*=(pos.h-48);
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int newPos = static_cast<int>(part + pos.y + 16 - slider->pos.y);
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slider->moveBy(Point(0, newPos));
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}
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else
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slider->moveTo(Point(pos.x, pos.y+16));
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}
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}
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void CSlider::scrollTo(int to)
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{
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vstd::amax(to, 0);
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vstd::amin(to, positions);
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//same, old position?
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if(value == to)
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return;
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value = to;
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updateSliderPos();
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moved(to);
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}
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void CSlider::clickPressed(const Point & cursorPosition)
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{
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if(!slider->isBlocked())
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{
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double pw = 0;
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double rw = 0;
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if(getOrientation() == Orientation::HORIZONTAL)
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{
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pw = cursorPosition.x-pos.x-25;
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rw = pw / static_cast<double>(pos.w - 48);
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}
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else
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{
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pw = cursorPosition.y-pos.y-24;
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rw = pw / (pos.h-48);
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}
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// click on area covered by buttons -> ignore, will be handled by left/right buttons
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if (!vstd::iswithin(rw, 0, 1))
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return;
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slider->clickPressed(cursorPosition);
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scrollTo((int)(rw * positions + 0.5));
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return;
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}
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}
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bool CSlider::receiveEvent(const Point &position, int eventType) const
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{
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if(eventType != WHEEL && eventType != GESTURE)
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{
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return CIntObject::receiveEvent(position, eventType);
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}
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if (!scrollBounds)
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return true;
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Rect testTarget = *scrollBounds + pos.topLeft();
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return testTarget.isInside(position);
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}
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CSlider::CSlider(Point position, int totalw, std::function<void(int)> Moved, int Capacity, int Amount, int Value, Orientation orientation, CSlider::EStyle style)
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: Scrollable(LCLICK | DRAG, position, orientation ),
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capacity(Capacity),
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amount(Amount),
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value(Value),
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moved(Moved)
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{
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OBJECT_CONSTRUCTION_CAPTURING(255-DISPOSE);
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setAmount(amount);
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vstd::amax(value, 0);
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vstd::amin(value, positions);
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if(style == BROWN)
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{
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std::string name = getOrientation() == Orientation::HORIZONTAL ? "IGPCRDIV.DEF" : "OVBUTN2.DEF";
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//NOTE: this images do not have "blocked" frames. They should be implemented somehow (e.g. palette transform or something...)
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left = std::make_shared<CButton>(Point(), name, CButton::tooltip());
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right = std::make_shared<CButton>(Point(), name, CButton::tooltip());
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slider = std::make_shared<CButton>(Point(), name, CButton::tooltip());
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left->setImageOrder(0, 1, 1, 1);
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right->setImageOrder(2, 3, 3, 3);
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slider->setImageOrder(4, 4, 4, 4);
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}
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else
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{
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left = std::make_shared<CButton>(Point(), getOrientation() == Orientation::HORIZONTAL ? "SCNRBLF.DEF" : "SCNRBUP.DEF", CButton::tooltip());
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right = std::make_shared<CButton>(Point(), getOrientation() == Orientation::HORIZONTAL ? "SCNRBRT.DEF" : "SCNRBDN.DEF", CButton::tooltip());
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slider = std::make_shared<CButton>(Point(), "SCNRBSL.DEF", CButton::tooltip());
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}
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slider->actOnDown = true;
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slider->soundDisabled = true;
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left->soundDisabled = true;
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right->soundDisabled = true;
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if (getOrientation() == Orientation::HORIZONTAL)
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right->moveBy(Point(totalw - right->pos.w, 0));
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else
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right->moveBy(Point(0, totalw - right->pos.h));
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left->addCallback(std::bind(&CSlider::scrollPrev,this));
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right->addCallback(std::bind(&CSlider::scrollNext,this));
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if(getOrientation() == Orientation::HORIZONTAL)
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{
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pos.h = slider->pos.h;
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pos.w = totalw;
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}
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else
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{
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pos.w = slider->pos.w;
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pos.h = totalw;
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}
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// for horizontal sliders that act as values selection - add keyboard event to receive left/right click
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if (getOrientation() == Orientation::HORIZONTAL)
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addUsedEvents(KEYBOARD);
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updateSliderPos();
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}
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CSlider::~CSlider() = default;
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void CSlider::block( bool on )
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{
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left->block(on);
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right->block(on);
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slider->block(on);
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}
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void CSlider::setAmount( int to )
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{
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amount = to;
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positions = to - capacity;
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vstd::amax(positions, 0);
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}
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void CSlider::showAll(Canvas & to)
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{
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to.drawColor(pos, Colors::BLACK);
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CIntObject::showAll(to);
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}
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void CSlider::keyPressed(EShortcut key)
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{
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int moveDest = value;
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switch(key)
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{
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case EShortcut::MOVE_UP:
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if (getOrientation() == Orientation::VERTICAL)
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moveDest = value - getScrollStep();
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break;
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case EShortcut::MOVE_LEFT:
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if (getOrientation() == Orientation::HORIZONTAL)
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moveDest = value - getScrollStep();
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break;
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case EShortcut::MOVE_DOWN:
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if (getOrientation() == Orientation::VERTICAL)
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moveDest = value + getScrollStep();
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break;
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case EShortcut::MOVE_RIGHT:
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if (getOrientation() == Orientation::HORIZONTAL)
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moveDest = value + getScrollStep();
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break;
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case EShortcut::MOVE_PAGE_UP:
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moveDest = value - capacity + getScrollStep();
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break;
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case EShortcut::MOVE_PAGE_DOWN:
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moveDest = value + capacity - getScrollStep();
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break;
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case EShortcut::MOVE_FIRST:
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moveDest = 0;
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break;
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case EShortcut::MOVE_LAST:
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moveDest = amount - capacity;
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break;
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default:
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return;
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}
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scrollTo(moveDest);
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}
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void CSlider::scrollToMin()
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{
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scrollTo(0);
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}
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void CSlider::scrollToMax()
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{
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scrollTo(amount);
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}
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