#include "ApplicationInterface.h"
#include "NavBooks.h"

#include "SimpleNavigator.h"

//RECT RECT_SCREEN = {0,0,240,294};

// #define MAXVERTICAL 10  // altered BD Nov 07 to make OK in landscape
//#define MAXVERTICAL 9
//#define MAX_OT_COLS 5


// #define ROW0 15
// #define ROW1 30
// #define ROW2 45

// all uses of ROW1 and ROW2 removed BD Nov 2007 to make buttons fit on landscape
// the message "Select a book:" will only show in portrait display as it is now
// re-sited below the buttons - but it's not really that important anyway

#define ROW0 5

NavBooks::NavBooks(SimpleNavigator* navigator): NavPage(navigator) {
	this->position=&(navigator->position);
	this->command = "Select a book from the above:";
	this->maxOTNumber=position->otBookCount();
	this->maxNumber=position->bookCount();
}

NavBooks::~NavBooks() {
}

void NavBooks::paint() {
	RECT rt;
	memset(&rt,0,sizeof(rt));
	
	//RECT_SCREEN.bottom = 320; // portrait or landscape for clearing (Big square area)
	//RECT_SCREEN.right = 320;

	RECT_SCREEN.bottom = GetSystemMetrics(SM_CYSCREEN) - 2*MENU_HEIGHT;
	RECT_SCREEN.right = GetSystemMetrics(SM_CXSCREEN);
	
	rt.right=RECT_SCREEN.right;

	// to see if the whole screen gets filled
	//rt.bottom=RECT_SCREEN.bottom;
	//setBackground(0x00000000);
	//drawText(&rt,UString(L"test"));
	//setBackground();
	
	// below simply padded the top of the screen downwards and displayed the string
	// rt.bottom=ROW0;
	// clearRect(&rt);
	// rt.top=ROW0; rt.bottom=ROW1;
	// drawText(&rt,command);
	// rt.top=ROW1; rt.bottom=ROW2;
	// clearRect(&rt);

	// all references below changed to ROW0 :some were formerly ROW2 - amended BD Nov 07

	setBackground(BUTTON_BACKGROUND);
	setFont(FONT_NAVIGATION);
	TCHAR** bookNames=position->getBookNames();
	int current=1;
	int maxTNumber=maxOTNumber;
	//padding left of books
	rt.top=rt.bottom; rt.bottom=RECT_SCREEN.bottom;
	rt.right=PADDING_WIDTH;
	clearRect(&rt);
	while (current<=maxNumber) {
		//Paint one testament
		while (current<=maxTNumber) {
			int colStart=current;
			rt.left=rt.right; rt.right=rt.left+BUTTON_WIDTH_BK; rt.bottom=ROW0;
			while ((current<=maxTNumber)&&(current-colStart<getMaxRows())) {
				//padding top of button
				rt.top=rt.bottom;rt.bottom=rt.top+PADDING_HEIGHT;
				clearRect(&rt);
				//button
				rt.top=rt.bottom;rt.bottom=rt.top+BUTTON_HEIGHT;
				drawText(&rt,bookNames[current-1],3);
				current++;
			}

			//	padding below buttons
			rt.top=rt.bottom;rt.bottom=RECT_SCREEN.bottom;
			clearRect(&rt);
			// padding right of buttons
			// rt.top=ROW2; rt.left=rt.right; rt.right=rt.left+PADDING_WIDTH;
			rt.top=ROW0; rt.left=rt.right; rt.right=rt.left+PADDING_WIDTH;
			clearRect(&rt);
			// six lines above commented out while testing BD
		}
		if (current<maxNumber) {
			//space between testaments
			maxTNumber=maxNumber;
			rt.right=rt.left+PADDING_WIDTH+PADDING_WIDTH;
			// rt.right=rt.left+BUTTON_WIDTH+PADDING_WIDTH;
			clearRect(&rt);
		}

	}
	//space right of the buttons
	rt.left=rt.right; rt.right=RECT_SCREEN.right; rt.bottom=RECT_SCREEN.bottom;
	clearRect(&rt);
		// next three lines draw text which will only be seen in portrait mode	
	setBackground(0xFFFFFFFF);  // white
	rt.left=0;
	rt.top = ROW0 + 20 + getMaxRows()*(BUTTON_HEIGHT+PADDING_HEIGHT);
	rt.bottom=ROW0+20+BUTTON_HEIGHT+getMaxRows()*(BUTTON_HEIGHT+PADDING_HEIGHT);
	drawText(&rt,command);
	setBackground();
	setFont();
}

int NavBooks::numberAt(int x, int y) {
	// The addition portion adds a partial column to the total 
	int totalOTCols = maxOTNumber / getMaxRows() + (maxOTNumber % getMaxRows() ? 1 : 0);

	if ((y>=ROW0)&&(y < ROW0 + getMaxRows()*(PADDING_HEIGHT+BUTTON_HEIGHT))) {
		y=y-ROW0;
	
		if ((x>=PADDING_WIDTH)&&(x<PADDING_WIDTH+totalOTCols*(BUTTON_WIDTH_BK+PADDING_WIDTH))) {
			x=x-PADDING_WIDTH;
			int horizontal=(x/(PADDING_WIDTH+BUTTON_WIDTH_BK));
			x=x-horizontal*(PADDING_WIDTH+BUTTON_WIDTH_BK);
			int vertical=(y/(PADDING_HEIGHT+BUTTON_HEIGHT));
			if (vertical<getMaxRows()) {
				y=y-vertical*(PADDING_HEIGHT+BUTTON_HEIGHT);
				//button is in bottom left corner
				if ((x<BUTTON_WIDTH_BK)&&(y>=PADDING_HEIGHT)) {
					int current=horizontal*getMaxRows()+vertical+1;
					if (current<=maxOTNumber) return current;  // it was a valid OT book
				}
			}
		}
		// it wasn't an old testament book, so try for NT book
		else if (x>=PADDING_WIDTH+totalOTCols*(BUTTON_WIDTH_BK+PADDING_WIDTH)) {
			x=x-(PADDING_WIDTH+totalOTCols*(BUTTON_WIDTH_BK+PADDING_WIDTH));
			int horizontal=(x/(PADDING_WIDTH+BUTTON_WIDTH_BK));
			x=x-horizontal*(PADDING_WIDTH+BUTTON_WIDTH_BK);
			int vertical=(y/(PADDING_HEIGHT+BUTTON_HEIGHT));
			if (vertical<getMaxRows()) {
				y=y-vertical*(PADDING_HEIGHT+BUTTON_HEIGHT);
				//button is in bottom left corner
				if ((x<BUTTON_WIDTH_BK)&&(y>=PADDING_HEIGHT)) {
					int current=horizontal*getMaxRows()+vertical+maxOTNumber+1;
					if (current<=maxNumber) return current;
				}
			}
		}
	}
	return -1;
}

void NavBooks::userTap(int x, int y) {
	int number=numberAt(x,y);
	if (number>0) {
		navigator->setBook(number);
		navigator->setMode(MODE_CHAP);
	}
}