mirror of https://github.com/axmolengine/axmol.git
167 lines
5.5 KiB
C++
167 lines
5.5 KiB
C++
/*
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* CCControlHuePicker.m
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*
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* Copyright 2012 Stewart Hamilton-Arrandale.
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* http://creativewax.co.uk
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*
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* Modified by Yannick Loriot.
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* http://yannickloriot.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* Converted to c++ / cocos2d-x by Angus C
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*/
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#include "CCControlHuePicker.h"
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#include "support/CCPointExtension.h"
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NS_CC_EXT_BEGIN
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CCControlHuePicker::~CCControlHuePicker()
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{
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}
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CCControlHuePicker* CCControlHuePicker::pickerWithTargetAndPos(CCNode* target, CCPoint pos)
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{
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return CCControlHuePicker::create(target, pos);
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}
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CCControlHuePicker* CCControlHuePicker::create(CCNode* target, CCPoint pos)
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{
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CCControlHuePicker *pRet = new CCControlHuePicker();
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pRet->initWithTargetAndPos(target, pos);
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pRet->autorelease();
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return pRet;
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}
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bool CCControlHuePicker::initWithTargetAndPos(CCNode* target, CCPoint pos)
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{
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if (CCControl::init())
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{
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setTouchEnabled(true);
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// Add background and slider sprites
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m_background=CCControlUtils::addSpriteToTargetWithPosAndAnchor("huePickerBackground.png", target, pos, ccp(0.0f, 0.0f));
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m_slider=CCControlUtils::addSpriteToTargetWithPosAndAnchor("colourPicker.png", target, pos, ccp(0.5f, 0.5f));
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m_slider->setPosition(ccp(pos.x, pos.y + m_background->boundingBox().size.height * 0.5f));
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m_startPos=pos;
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// Sets the default value
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m_hue=0.0f;
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m_huePercentage=0.0f;
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return true;
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}
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else
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return false;
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}
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void CCControlHuePicker::setHue(float hueValue)
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{
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m_hue=hueValue;
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setHuePercentage(m_hue/360.0f);
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}
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void CCControlHuePicker::setHuePercentage(float hueValueInPercent)
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{
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m_huePercentage=hueValueInPercent;
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m_hue=m_huePercentage*360.0f;
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// Clamp the position of the icon within the circle
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CCRect backgroundBox=m_background->boundingBox();
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// Get the center point of the background image
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float centerX = m_startPos.x + backgroundBox.size.width * 0.5f;
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float centerY = m_startPos.y + backgroundBox.size.height * 0.5f;
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// Work out the limit to the distance of the picker when moving around the hue bar
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float limit = backgroundBox.size.width * 0.5f - 15.0f;
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// Update angle
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float angleDeg = m_huePercentage * 360.0f - 180.0f;
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float angle = CC_DEGREES_TO_RADIANS(angleDeg);
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// Set new position of the slider
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float x = centerX + limit * cosf(angle);
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float y = centerY + limit * sinf(angle);
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m_slider->setPosition(ccp(x, y));
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}
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void CCControlHuePicker::updateSliderPosition(CCPoint location)
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{
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// Clamp the position of the icon within the circle
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CCRect backgroundBox=m_background->boundingBox();
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// Get the center point of the background image
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float centerX = m_startPos.x + backgroundBox.size.width * 0.5f;
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float centerY = m_startPos.y + backgroundBox.size.height * 0.5f;
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// Work out the distance difference between the location and center
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float dx = location.x - centerX;
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float dy = location.y - centerY;
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// Update angle by using the direction of the location
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float angle = atan2f(dy, dx);
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float angleDeg = CC_RADIANS_TO_DEGREES(angle) + 180.0f;
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// use the position / slider width to determin the percentage the dragger is at
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setHue(angleDeg);
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// send CCControl callback
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sendActionsForControlEvents(CCControlEventValueChanged);
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}
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bool CCControlHuePicker::checkSliderPosition(CCPoint location)
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{
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// check that the touch location is within the bounding rectangle before sending updates
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if (m_background->boundingBox().containsPoint(location))
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{
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updateSliderPosition(location);
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return true;
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}
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return false;
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}
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bool CCControlHuePicker::ccTouchBegan(CCTouch* touch, CCEvent* event)
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{
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// Get the touch location
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CCPoint touchLocation=getTouchLocation(touch);
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// Check the touch position on the slider
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return checkSliderPosition(touchLocation);
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}
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void CCControlHuePicker::ccTouchMoved(CCTouch* touch, CCEvent* event)
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{
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// Get the touch location
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CCPoint touchLocation=getTouchLocation(touch);
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//small modification: this allows changing of the colour, even if the touch leaves the bounding area
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updateSliderPosition(touchLocation);
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sendActionsForControlEvents(CCControlEventValueChanged);
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// Check the touch position on the slider
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//checkSliderPosition(touchLocation);
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}
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NS_CC_EXT_END
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