/**
 *******************************************************************************
 * @file ewol/widget/Button.cpp
 * @brief ewol Button widget system (Sources)
 * @author Edouard DUPIN
 * @date 07/11/2011
 * @par Project
 * ewol
 *
 * @par Copyright
 * Copyright 2011 Edouard DUPIN, all right reserved
 *
 * This software is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY.
 *
 * Licence summary : 
 *    You can modify and redistribute the sources code and binaries.
 *    You can send me the bug-fix
 *
 * Term of the licence in in the file licence.txt.
 *
 *******************************************************************************
 */

#include <ewol/widget/Button.h>

#include <ewol/OObject.h>
#include <ewol/WidgetManager.h>


extern const char * const ewolEventButtonPressed    = "ewol Button Pressed";
extern const char * const ewolEventButtonEnter      = "ewol Button Enter";
extern const char * const ewolEventButtonLeave      = "ewol Button Leave";



#undef __class__
#define __class__	"ewol::Button"


void ewol::Button::Init(void)
{
	AddEventId(ewolEventButtonPressed);
	AddEventId(ewolEventButtonEnter);
	AddEventId(ewolEventButtonLeave);
	
	m_alignement = ewol::TEXT_ALIGN_CENTER;
	
	#ifdef __PLATFORM__Android
		m_padding.y = 12;
		m_padding.x = 12;
	#else
		m_padding.y = 4;
		m_padding.x = 4;
	#endif
	
	m_textColorFg.red   = 0.0;
	m_textColorFg.green = 0.0;
	m_textColorFg.blue  = 0.0;
	m_textColorFg.alpha = 1.0;
	
	m_textColorBg.red   = 0.0;
	m_textColorBg.green = 0.0;
	m_textColorBg.blue  = 0.0;
	m_textColorBg.alpha = 0.25;
	SetCanHaveFocus(true);
}

ewol::Button::Button(void)
{
	m_label = "No Label";
	Init();
}

ewol::Button::Button(etk::UString newLabel)
{
	m_label = newLabel;
	Init();
}


ewol::Button::~Button(void)
{
	
}

void ewol::Button::SetPadding(coord2D_ts newPadding)
{
	m_padding = newPadding;
}

bool ewol::Button::CalculateMinSize(void)
{
	int32_t fontId = GetDefaultFontId();
	int32_t minWidth = ewol::GetWidth(fontId, m_label);
	int32_t minHeight = ewol::GetHeight(fontId);
	m_minSize.x = m_padding.x*2 + minWidth;
	m_minSize.y = m_padding.y*2 + minHeight;
	MarkToReedraw();
	return true;
}


void ewol::Button::SetLabel(etk::UString newLabel)
{
	m_label = newLabel;
}

void ewol::Button::SetValue(bool val)
{
	
}

void ewol::Button::SetAlignement(textAlignement_te typeAlign)
{
	m_alignement = typeAlign;
	MarkToReedraw();
}


bool ewol::Button::GetValue(void)
{
	return false;
}


void ewol::Button::OnRegenerateDisplay(void)
{
	if (true == NeedRedraw()) {
		// clean the object list ...
		ClearOObjectList();
		
		int32_t tmpSizeX = m_minSize.x;
		int32_t tmpSizeY = m_minSize.y;
		int32_t tmpOriginX = (m_size.x - m_minSize.x) / 2;
		int32_t tmpOriginY = (m_size.y - m_minSize.y) / 2;
		// no change for the text orogin : 
		int32_t tmpTextOriginX = (m_size.x - m_minSize.x) / 2 + m_padding.x;
		int32_t tmpTextOriginY = (m_size.y - m_minSize.y) / 2 + m_padding.y;
		
		if (true==m_userFillX) {
			tmpSizeX = m_size.x;
			tmpOriginX = 0;
			if (m_alignement == ewol::TEXT_ALIGN_LEFT) {
				tmpTextOriginX = m_padding.x;
			}
		}
		if (true==m_userFillY) {
			tmpSizeY = m_size.y;
			tmpOriginY = 0;
		}
		tmpOriginX += m_padding.x;
		tmpOriginY += m_padding.y;
		tmpSizeX -= 2*m_padding.x;
		tmpSizeY -= 2*m_padding.y;
		
		ewol::OObject2DText * tmpText = new ewol::OObject2DText("", -1, m_textColorFg);
		/*
		int32_t fontId = GetDefaultFontId();
		int32_t fontHeight = ewol::GetHeight(fontId);
		int32_t fontWidth = ewol::GetWidth(fontId, m_label.c_str());
		*/
		coord2D_ts textPos;
		textPos.x = tmpTextOriginX;
		textPos.y = tmpTextOriginY;
		clipping_ts drawClipping;
		drawClipping.x = m_padding.x;
		drawClipping.y = m_padding.y;
		drawClipping.w = m_size.x - 2*m_padding.x;
		drawClipping.h = m_size.y - 2*m_padding.y;
		tmpText->Text(textPos, drawClipping, m_label);
		
		ewol::OObject2DColored * tmpOObjects = new ewol::OObject2DColored;
		tmpOObjects->SetColor(m_textColorBg);
		tmpOriginX -= m_padding.x/2;
		tmpOriginY -= m_padding.y/2;
		tmpSizeX += m_padding.x/1;
		tmpSizeY += m_padding.y/1;
		tmpOObjects->Rectangle( tmpOriginX, tmpOriginY, tmpSizeX, tmpSizeY);
		AddOObject(tmpOObjects);
		
		AddOObject(tmpText);
	}
}


bool ewol::Button::OnEventInput(int32_t IdInput, eventInputType_te typeEvent, etkFloat_t x, etkFloat_t y)
{
	//EWOL_DEBUG("Event on BT ...");
	if (1 == IdInput) {
		if(    ewol::EVENT_INPUT_TYPE_SINGLE == typeEvent
		    || ewol::EVENT_INPUT_TYPE_DOUBLE == typeEvent
		    || ewol::EVENT_INPUT_TYPE_TRIPLE == typeEvent) {
			// nothing to do ...
			GenEventInputExternal(ewolEventButtonPressed, x, y);
			MarkToReedraw();
			return true;
		}
	}
	return false;
}


bool ewol::Button::OnEventKb(ewol::eventKbType_te typeEvent, uniChar_t unicodeData)
{
	//EWOL_DEBUG("BT PRESSED : \"" << UTF8_data << "\" size=" << strlen(UTF8_data));
	if(    typeEvent == ewol::EVENT_KB_TYPE_DOWN
	    && unicodeData == '\r') {
		GenEventInputExternal(ewolEventButtonEnter, -1, -1);
	}
	return false;
}