Subversion Repositories Kolibri OS

//list_box

#ifndef INCLUDE_LIST_BOX_H

#define INCLUDE_LIST_BOX_H

#print "[include ]\n"

#ifndef INCLUDE_KOLIBRI_H

#include "../lib/kolibri.h"

#endif

struct llist

{

	int x, y, w, h, min_h, line_h, text_y;

	int column_max;

	int count, visible, first, current; //visible = row_max

	int active;

	void ClearList();

	int MouseOver(int xx, yy);

	int ProcessMouse(int xx, yy);

	int ProcessKey(dword key);

	int KeyDown();

	int KeyUp();

	int KeyHome();

	int KeyEnd();

	int KeyPgDown();

	int KeyPgUp();

	void CheckDoesValuesOkey();

	void SetSizes(int xx, yy, ww, hh, min_hh, line_hh);

	int MouseScroll(dword scroll_state);

	int MouseScrollNoSelection(dword scroll_state);

	void debug_values();

};

void llist::debug_values()

{

	char yi[128];

	sprintf(#yi, "%s %d %s %d %s %d %s %d", "current:", current, "first:", first,

	"visible:", visible, "count:", count);

	debugln(#yi);

}

void llist::ClearList()

{

	count = visible = first = current = 0;

}

void llist::SetSizes(int xx, yy, ww, hh, min_hh, line_hh)

{

	x = xx;

	y = yy;

	w = ww;

	h = hh;

	min_h = min_hh;

	line_h = line_hh;

	text_y = line_h / 2 - 4;

	visible = h / line_h;

	column_max = w / 6;

	//if (visible > count) visible=count;

}

int llist::MouseScroll(dword scroll_state)

{

	if (count<=visible) return 0;

	if (scroll_state == 65535)

	{

		if (first == 0) return 0;

		if (first > 3) first -= 2; else first=0;

		return 1;

	}

	if (scroll_state == 1)

	{

		if (visible + first == count) return 0;

		if (visible+first+3 > count) first = count - visible; else first+=2;

		return 1;

	}

	return 0;

}

int llist::MouseScrollNoSelection(dword scroll_state)

{

	if (count<=visible) return 0;

	if (scroll_state == 65535)

	{

		if (current == 0) return 0;

		if (current > 3) current -= 2; else current=0;

		return 1;

	}

	if (scroll_state == 1)

	{

		if (visible + current == count) return 0;

		if (visible+current+3 > count) current = count - visible; else current+=2;

		return 1;

	}

	return 0;

}

int llist::MouseOver(int xx, yy)

{

	if (xx>x) && (xxy) && (yy

	return 0;

}

int llist::ProcessMouse(int xx, yy)

{

	int current_temp;

	if (MouseOver(xx, yy))

	{

		current_temp = yy - y / line_h + first;

		if (current_temp != current) && (current_temp

		{

			current = current_temp;

			return 1;

		}

	}

	return 0;

}

int llist::ProcessKey(dword key)

{

	switch(key)

	{

		case ASCII_KEY_DOWN: return KeyDown();

		case ASCII_KEY_UP:   return KeyUp();

		case ASCII_KEY_HOME: return KeyHome();

		case ASCII_KEY_END:  return KeyEnd();

		case ASCII_KEY_PGUP: return KeyPgUp();

		case ASCII_KEY_PGDN: return KeyPgDown();

	}

	return 0;

}

int llist::KeyDown()

{

	if (current-first+1

	{

		if (current + 1 >= count) return 0;

		current++;

	}

	else

	{

		if (visible + first >= count) return 0;

		first++;

		current++;

	}

	if (current < first) || (current > first + visible)

	{

		first = current;

		CheckDoesValuesOkey();

	}

	return 1;

}

int llist::KeyUp()

{

	if (current > first)

	{

		current--;

	}

	else

	{

		if (first == 0) return 0;

		first--;

		current--;

	}

	if (current < first) || (current > first + visible)

	{

		first = current;

		CheckDoesValuesOkey();

	}

	return 1;

}

int llist::KeyHome()

{

	if (current==0) && (first==0) return 0;

	current = first = 0;

	return 1;

}

int llist::KeyEnd()

{

	if (current==count-1) && (first==count-visible) return 0;

	current = count-1;

	first = count - visible;

	return 1;

}

int llist::KeyPgUp()

{

	if (count <= visible) return KeyHome();

	if (first == 0) return 0;

	first -= visible;

	CheckDoesValuesOkey();

	return 1;

}

int llist::KeyPgDown()

{

	if (count <= visible) return KeyEnd();

	if (first == count - visible) return 0;

	first += visible;

	CheckDoesValuesOkey();

	return 1;

}

void llist::CheckDoesValuesOkey()

{

	if (first < 0) first = 0;

	if (visible + first > count) first = count - visible;

	if (current >= count) current = count - 1;

	if (current < 0) current = 0;

}

#endif