axmol/extensions/GUI/CCControlExtension/CCControlSaturationBrightne...

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/*
* Copyright (c) 2012 cocos2d-x.org
* http://www.cocos2d-x.org
*
* Copyright 2012 Stewart Hamilton-Arrandale.
* http://creativewax.co.uk
*
* Modified by Yannick Loriot.
* http://yannickloriot.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* Converted to c++ / cocos2d-x by Angus C
*/
#include "CCControlSaturationBrightnessPicker.h"
#include "support/CCPointExtension.h"
NS_CC_EXT_BEGIN
ControlSaturationBrightnessPicker::ControlSaturationBrightnessPicker()
: _saturation(0.0f)
, _brightness(0.0f)
, _background(NULL)
, _overlay(NULL)
, _shadow(NULL)
, _slider(NULL)
, boxPos(0)
, boxSize(0)
{
}
ControlSaturationBrightnessPicker::~ControlSaturationBrightnessPicker()
{
removeAllChildrenWithCleanup(true);
_background = NULL;
_overlay = NULL;
_shadow = NULL;
_slider = NULL;
}
bool ControlSaturationBrightnessPicker::initWithTargetAndPos(Node* target, Point pos)
{
if (Control::init())
{
setTouchEnabled(true);
// Add background and slider sprites
_background=ControlUtils::addSpriteToTargetWithPosAndAnchor("colourPickerBackground.png", target, pos, ccp(0.0f, 0.0f));
_overlay=ControlUtils::addSpriteToTargetWithPosAndAnchor("colourPickerOverlay.png", target, pos, ccp(0.0f, 0.0f));
_shadow=ControlUtils::addSpriteToTargetWithPosAndAnchor("colourPickerShadow.png", target, pos, ccp(0.0f, 0.0f));
_slider=ControlUtils::addSpriteToTargetWithPosAndAnchor("colourPicker.png", target, pos, ccp(0.5f, 0.5f));
_startPos=pos; // starting position of the colour picker
boxPos = 35; // starting position of the virtual box area for picking a colour
boxSize = _background->getContentSize().width / 2;; // the size (width and height) of the virtual box for picking a colour from
return true;
}
else
{
return false;
}
}
ControlSaturationBrightnessPicker* ControlSaturationBrightnessPicker::create(Node* target, Point pos)
{
ControlSaturationBrightnessPicker *pRet = new ControlSaturationBrightnessPicker();
pRet->initWithTargetAndPos(target, pos);
pRet->autorelease();
return pRet;
}
void ControlSaturationBrightnessPicker::setEnabled(bool enabled)
{
Control::setEnabled(enabled);
if (_slider != NULL)
{
_slider->setOpacity(enabled ? 255 : 128);
}
}
void ControlSaturationBrightnessPicker::updateWithHSV(HSV hsv)
{
HSV hsvTemp;
hsvTemp.s = 1;
hsvTemp.h = hsv.h;
hsvTemp.v = 1;
RGBA rgb = ControlUtils::RGBfromHSV(hsvTemp);
_background->setColor(Color3B((GLubyte)(rgb.r * 255.0f), (GLubyte)(rgb.g * 255.0f), (GLubyte)(rgb.b * 255.0f)));
}
void ControlSaturationBrightnessPicker::updateDraggerWithHSV(HSV hsv)
{
// Set the position of the slider to the correct saturation and brightness
Point pos = CCPointMake(_startPos.x + boxPos + (boxSize*(1 - hsv.s)),
_startPos.y + boxPos + (boxSize*hsv.v));
// update
updateSliderPosition(pos);
}
void ControlSaturationBrightnessPicker::updateSliderPosition(Point sliderPosition)
{
// Clamp the position of the icon within the circle
// Get the center point of the bkgd image
float centerX = _startPos.x + _background->boundingBox().size.width*0.5f;
float centerY = _startPos.y + _background->boundingBox().size.height*0.5f;
// Work out the distance difference between the location and center
float dx = sliderPosition.x - centerX;
float dy = sliderPosition.y - centerY;
float dist = sqrtf(dx * dx + dy * dy);
// Update angle by using the direction of the location
float angle = atan2f(dy, dx);
// Set the limit to the slider movement within the colour picker
float limit = _background->boundingBox().size.width*0.5f;
// Check distance doesn't exceed the bounds of the circle
if (dist > limit)
{
sliderPosition.x = centerX + limit * cosf(angle);
sliderPosition.y = centerY + limit * sinf(angle);
}
// Set the position of the dragger
_slider->setPosition(sliderPosition);
// Clamp the position within the virtual box for colour selection
if (sliderPosition.x < _startPos.x + boxPos) sliderPosition.x = _startPos.x + boxPos;
else if (sliderPosition.x > _startPos.x + boxPos + boxSize - 1) sliderPosition.x = _startPos.x + boxPos + boxSize - 1;
if (sliderPosition.y < _startPos.y + boxPos) sliderPosition.y = _startPos.y + boxPos;
else if (sliderPosition.y > _startPos.y + boxPos + boxSize) sliderPosition.y = _startPos.y + boxPos + boxSize;
// Use the position / slider width to determin the percentage the dragger is at
_saturation = 1.0f - fabs((_startPos.x + (float)boxPos - sliderPosition.x)/(float)boxSize);
_brightness = fabs((_startPos.y + (float)boxPos - sliderPosition.y)/(float)boxSize);
}
bool ControlSaturationBrightnessPicker::checkSliderPosition(Point location)
{
// Clamp the position of the icon within the circle
// get the center point of the bkgd image
float centerX = _startPos.x + _background->boundingBox().size.width*0.5f;
float centerY = _startPos.y + _background->boundingBox().size.height*0.5f;
// work out the distance difference between the location and center
float dx = location.x - centerX;
float dy = location.y - centerY;
float dist = sqrtf(dx*dx+dy*dy);
// check that the touch location is within the bounding rectangle before sending updates
if (dist <= _background->boundingBox().size.width*0.5f)
{
updateSliderPosition(location);
sendActionsForControlEvents(ControlEventValueChanged);
return true;
}
return false;
}
bool ControlSaturationBrightnessPicker::ccTouchBegan(Touch* touch, Event* event)
{
if (!isEnabled() || !isVisible())
{
return false;
}
// Get the touch location
Point touchLocation=getTouchLocation(touch);
// Check the touch position on the slider
return checkSliderPosition(touchLocation);
}
void ControlSaturationBrightnessPicker::ccTouchMoved(Touch* touch, Event* event)
{
// Get the touch location
Point touchLocation=getTouchLocation(touch);
//small modification: this allows changing of the colour, even if the touch leaves the bounding area
// updateSliderPosition(touchLocation);
// sendActionsForControlEvents(ControlEventValueChanged);
// Check the touch position on the slider
checkSliderPosition(touchLocation);
}
NS_CC_EXT_END