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#define MEMSIZE 1024*80

//===================================================//

//                                                   //

//                       LIB                         //

//                                                   //

//===================================================//

#include "../lib/io.h"

#include "../lib/gui.h"

#include "../lib/list_box.h"

#include "../lib/kfont.h"

#include "../lib/obj/box_lib.h"

#include "../lib/obj/libini.h"

#include "../lib/obj/libimg.h"

#include "../lib/obj/iconv.h"

#include "../lib/obj/proc_lib.h"

#include "../lib/patterns/simple_open_dialog.h"

//===================================================//

//                                                   //

//                 INTERNAL INCLUDES                 //

//                                                   //

//===================================================//

proc_info Form;

llist list;

#define TOOLBAR_H 34

#define TOOLBAR_ICON_WIDTH  24

#define TOOLBAR_ICON_HEIGHT 22

dword bg_color;

dword text_color;

#include "search.h"

#include "prepare_page.h"

#include "data.h"

int encoding;

int curcol_scheme;

#include "ini.h"

//===================================================//

//                                                   //

//                       DATA                        //

//                                                   //

//===================================================//

scroll_bar scroll = { 15,200,398,44,0,2,115,15,0,0xeeeeee,0xBBBbbb,0xeeeeee,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1};

char title[4196];

bool help_opened = false;

int charsets_mx,

    reopenin_mx,

    colscheme_mx,

    search_mx;

enum {

	OPEN_FILE,

	MAGNIFY_MINUS,

	MAGNIFY_PLUS,

	CHANGE_CHARSET,

	REOPEN_IN_APP,

	SHOW_INFO,

	SHOW_FILE_PROPERTIES,

	COLOR_SCHEME,

	SEARCH_BTN,

	BTN_FIND_NEXT,

	BTN_FIND_CLOSE

};

dword menu_id;

//===================================================//

//                                                   //

//                       CODE                        //

//                                                   //

//===================================================//

void InitDlls()

{

	load_dll(boxlib,    #box_lib_init,   0);

	load_dll(libio,     #libio_init,     1);

	load_dll(libimg,    #libimg_init,    1);

	load_dll(libini,    #lib_init,       1);

	load_dll(iconv_lib, #iconv_open,     0);

	load_dll(Proc_lib,  #OpenDialog_init,0);

}

void main()

{

	InitDlls();

	OpenDialog_init stdcall (#o_dialog);

	if (param) strcpy(#openfile_path, #param);

	LoadIniSettings();

	EventSetColorScheme(curcol_scheme);

	kfont.init(DEFAULT_FONT);

	Libimg_LoadImage(#skin, abspath("toolbar.png"));

	LoadFile(#param);

	list.no_selection = true;

	SetEventMask(EVM_REDRAW + EVM_KEY + EVM_BUTTON + EVM_MOUSE + EVM_MOUSE_FILTER);

	loop()

	{

		switch(WaitEvent())

		{

			case evMouse:

				HandleMouseEvent();

				break;

			case evKey:

				HandleKeyEvent();

				break;

			case evButton:

				HandleButtonEvent();

				break;

			case evReDraw:

				if (CheckActiveProcess(Form.ID)) EventMenuClick();

				draw_window();

		}

	}

}

//===================================================//

//                                                   //

//                  EVENT HANDLERS                   //

//                                                   //

//===================================================//

void HandleButtonEvent()

{

	int btn = GetButtonID();

	if (btn==1) {

		SaveIniSettings();

		ExitProcess();

	}

	switch(btn-10)

	{

		case OPEN_FILE:

			EventOpenDialog();

			break;

		case SHOW_FILE_PROPERTIES:

			EventShowFileProperties();

			break;

		case MAGNIFY_PLUS:

			EventMagnifyPlus();

			break;

		case MAGNIFY_MINUS:

			EventMagnifyMinus();

			break;

		case CHANGE_CHARSET:

			EventShowCharsetsList();

			break;

		case REOPEN_IN_APP:

			EventShowReopenMenu();

			break;

		case COLOR_SCHEME:

			EventShowColorSchemesList();

			break;

		case SHOW_INFO:

			EventShowInfo();

			break;

		case SEARCH_BTN:

			if (search.visible) {

				search.hide();

			} else {

				search.show();

			}

			break;

		case BTN_FIND_NEXT:

			EventSearchNext();

			break;

		case BTN_FIND_CLOSE:

			search.hide();

			break;

	}

}

void HandleKeyEvent()

{

	int new_y;

	if (help_opened) {

		help_opened = false;

		DrawPage();

		return;

	}

	GetKeys();

	if (key_modifier & KEY_LCTRL) || (key_modifier & KEY_RCTRL) {

		switch (key_scancode)

		{

			case SCAN_CODE_KEY_O:

				EventOpenDialog();

				return;

			case SCAN_CODE_KEY_I:

				EventShowFileProperties();

				return;

			case SCAN_CODE_PLUS:

			case SCAN_CODE_UP:

				EventMagnifyPlus();

				return;

			case SCAN_CODE_DOWN:

			case SCAN_CODE_MINUS:

				EventMagnifyMinus();

				return;

			case SCAN_CODE_KEY_E:

				EventShowReopenMenu();

				return;

			case SCAN_CODE_TAB:

				EventShowCharsetsList();

				return;

			case SCAN_CODE_KEY_F:

				search.show();

				return;

			case SCAN_CODE_HOME:

				list.KeyHome();

				DrawPage();

		}

	}

	switch (key_scancode)

	{

		case SCAN_CODE_F1:

			EventShowInfo();

			return;

		case SCAN_CODE_ESC:

			search.hide();

			return;

		case SCAN_CODE_ENTER:

			if (! search_box.flags & ed_focus) return;

		case SCAN_CODE_F3:

			EventSearchNext();

			return;

	}

	if (!search.edit_key()) {

		if (list.ProcessKey(key_scancode)) DrawPage();

	}

}

void HandleMouseEvent()

{

	mouse.get();

	list.wheel_size = 7;

	if (list.MouseScroll(mouse.vert)) {

		DrawPage();

		return;

	}

	scrollbar_v_mouse (#scroll);

	if (list.first != scroll.position) {

		list.first = scroll.position;

		DrawPage();

	}

	search.edit_mouse();

}

//===================================================//

//                                                   //

//                      EVENTS                       //

//                                                   //

//===================================================//

bool EventSearchNext()

{

	int new_y = search.find_next(list.first, bg_color);

	if (new_y) {

		list.first = new_y / list.item_h;

		list.CheckDoesValuesOkey();

		DrawPage();

	}

}

void EventOpenDialog()

{

	OpenDialog_start stdcall (#o_dialog);

	if (o_dialog.status) {

		LoadFile(#openfile_path);

		search.clear();

		ParseAndPaint();

	}

}

void EventShowFileProperties()

{

	char ss_param[4096];

	if (!param) return;

	strcpy(#ss_param, "-p ");

	strcpy(#ss_param+3, #param);

	RunProgram("/sys/File managers/Eolite", #ss_param);

}

void EventMagnifyPlus()

{

	kfont.size.pt++;

	if(!kfont.changeSIZE())

		kfont.size.pt--;

	else

		ParseAndPaint();

}

void EventMagnifyMinus()

{

	kfont.size.pt--;

	if(!kfont.changeSIZE())

		kfont.size.pt++;

	else

		ParseAndPaint();

}

void EventShowCharsetsList()

{

	menu_id = CHANGE_CHARSET;

	open_lmenu(Form.left+5 + charsets_mx, Form.top+29+skin_height, MENU_ALIGN_TOP_LEFT,

		encoding+1, "UTF-8\nKOI8-RU\nCP1251\nCP1252\nISO8859-5\nCP866\nAUTO");

}

void EventShowReopenMenu()

{

	menu_id = REOPEN_IN_APP;

	open_lmenu(Form.left+5 + reopenin_mx, Form.top+29+skin_height, MENU_ALIGN_TOP_LEFT, 0,

		"Tinypad\nTextEdit\nWebView\nFB2Read\nHexView\nOther");

}

void EventShowColorSchemesList()

{

	menu_id = COLOR_SCHEME;

	open_lmenu(Form.left+2 + colscheme_mx + 26,

		Form.top+29+skin_height, MENU_ALIGN_TOP_RIGHT,

		curcol_scheme+1, #color_scheme_names);

}

void EventSetColorScheme(dword _setn)

{

	curcol_scheme = _setn;

	bg_color   = color_schemes[curcol_scheme*2];

	text_color = color_schemes[curcol_scheme*2+1];

	if (list.count) ParseAndPaint();

}

void EventShowInfo() {

	help_opened = true;

	DrawBar(list.x, list.y, list.w, list.h, bg_color);

	WriteText(list.x + 10, list.y + 10, 10000001b, text_color, VERSION);

	WriteTextLines(list.x + 10, list.y+40, 10010000b, text_color, ABOUT, 20);

}

void EventChangeCharset(dword id)

{

	encoding = id;

	LoadFile(#openfile_path);

	ParseAndPaint();

	draw_window();

}

void EventOpenFileInAnotherProgram(dword _id)

{

	dword app;

	byte open_param[4096];

	switch(_id) {

		case 0: app = "/sys/tinypad"; break;

		case 1: app = "/sys/develop/t_edit"; break;

		case 2: app = "/sys/network/webview"; break;

		case 3: app = "/sys/fb2read"; break;

		case 4: app = "/sys/develop/heed"; break;

		case 5: open_param[0]='~';

			strcpy(#open_param+1,#param);

			RunProgram("/sys/@open", #open_param);

			return;

	}

	RunProgram(app, #param);

}

void EventMenuClick()

{

	dword click_id = get_menu_click();

	if (click_id) && (menu_id)

	{

		if (menu_id == CHANGE_CHARSET) EventChangeCharset(click_id-1);

		else if (menu_id == REOPEN_IN_APP) EventOpenFileInAnotherProgram(click_id-1);

		else if (menu_id == COLOR_SCHEME) EventSetColorScheme(click_id-1);

		else notify("'Error: wrong menu number'E");

	}

	menu_id = NULL;

}

//===================================================//

//                                                   //

//               DRAWS AND OTHER FUNCS               //

//                                                   //

//===================================================//

void LoadFile(dword f_path)

{

	int tmp;

	if (ESBYTE[f_path]) {

		strcpy(#param, f_path);

		if (!io.read(#param)) goto NO_DATA;

		strcpy(#title, #param);

		strcat(#title, " - Text Reader");

	}

	else {

		NO_DATA:

		if (list.count) return;

		io.buffer_data = INTRO_TEXT;

		strcpy(#title, "Text Reader");

	}

	// Autodetecting encoding

	if (encoding==CH_AUTO) {

		if (strstr(io.buffer_data, "\208\190")) ChangeCharset(CH_UTF8, "CP866", io.buffer_data);

		else if (chrnum(io.buffer_data, '\246')>5) || (strstr(io.buffer_data, "ïð")) ChangeCharset(CH_CP1251, "CP866", io.buffer_data);

	} else {

		if (encoding!=CH_CP866) ChangeCharset(encoding, "CP866", io.buffer_data);

	}

	list.ClearList();

}

int DrawToolbarButton(char image_id, int x)

{

	DrawOvalBorder(x, 5, TOOLBAR_ICON_WIDTH, TOOLBAR_ICON_HEIGHT, sc.work_graph,

		sc.work_graph,sc.work_graph, sc.work_dark);

	img_draw stdcall(skin.image, x+1, 5+1, TOOLBAR_ICON_WIDTH, TOOLBAR_ICON_HEIGHT, TOOLBAR_ICON_WIDTH*image_id, 0);

	if (menu_id) && (menu_id == image_id) {

		DrawRectangle3D(x+1, 6, TOOLBAR_ICON_WIDTH-1, TOOLBAR_ICON_HEIGHT-1, 0xCCCccc, 0xF8FCF8);

		PutShadow(x+1, 6, TOOLBAR_ICON_WIDTH, TOOLBAR_ICON_HEIGHT, true, 2);

	}

	DefineHiddenButton(x+1, 6, TOOLBAR_ICON_WIDTH, TOOLBAR_ICON_HEIGHT, 10+image_id);

	return x;

}

void draw_window()

{

	#define BUTTONS_GAP 5

	#define BLOCKS_GAP 18

	#define TOOLBAR_BUTTON_WIDTH 26

	incn x;

	int old_w;

	DefineAndDrawWindow(Form.left,Form.top,Form.width,Form.height,0x73,0,#title,0);

	GetProcessInfo(#Form, SelfInfo);

	sc.get();

	if (Form.status_window>2) return;

	if (Form.width  < 340) { MoveSize(OLD,OLD,340,OLD); return; }

	if (Form.height < 200) { MoveSize(OLD,OLD,OLD,200); return; }

	DrawBar(0, 0, Form.cwidth, TOOLBAR_H - 1, sc.work);

	DrawBar(0, TOOLBAR_H - 1, Form.cwidth, 1, sc.work_graph);

	x.n = 0;

	DrawToolbarButton(OPEN_FILE,       x.inc(8));

	DrawToolbarButton(SHOW_FILE_PROPERTIES, x.inc(TOOLBAR_BUTTON_WIDTH + BUTTONS_GAP));

	DrawToolbarButton(MAGNIFY_MINUS,   x.inc(TOOLBAR_BUTTON_WIDTH + BLOCKS_GAP));

	DrawToolbarButton(MAGNIFY_PLUS,    x.inc(TOOLBAR_BUTTON_WIDTH - 1));

	search_mx    = DrawToolbarButton(SEARCH_BTN,     x.inc(TOOLBAR_BUTTON_WIDTH + BLOCKS_GAP));

	charsets_mx  = DrawToolbarButton(CHANGE_CHARSET, x.inc(TOOLBAR_BUTTON_WIDTH + BUTTONS_GAP));

	reopenin_mx  = DrawToolbarButton(REOPEN_IN_APP,  x.inc(TOOLBAR_BUTTON_WIDTH + BUTTONS_GAP));

	x.n = Form.cwidth - 34;

	DrawToolbarButton(SHOW_INFO, x.n);

	colscheme_mx = DrawToolbarButton(COLOR_SCHEME,   x.inc(-TOOLBAR_BUTTON_WIDTH - BUTTONS_GAP));

	if (search.draw(BTN_FIND_NEXT+10, BTN_FIND_CLOSE+10, Form.cheight - SEARCH_H)) {

		DrawRectangle3D(search_mx+1, 6, TOOLBAR_ICON_WIDTH-1,

			TOOLBAR_ICON_HEIGHT-1, 0xCCCccc, 0xF8FCF8);

	}

	old_w = list.w;

	list.SetSizes(0, TOOLBAR_H, Form.cwidth-scroll.size_x-1,

		Form.cheight-TOOLBAR_H-search.height(), math.round(kfont.size.pt * 1.4));

	if ((Form.cwidth-scroll.size_x-1 == old_w) && (list.count)) {

		DrawPage();

	} else {

		ParseAndPaint();

	}

	DrawRectangle(scroll.start_x, scroll.start_y, scroll.size_x, scroll.size_y-1, scroll.bckg_col);

}

void DrawPage()

{

	kfont.ShowBufferPart(list.x, list.y, list.w, list.h, list.first*list.item_h*list.w);

	scroll.max_area = list.count;

	scroll.cur_area = list.visible;

	scroll.position = list.first;

	scroll.all_redraw = 0;

	scroll.start_x = list.x + list.w;

	scroll.start_y = list.y;

	scroll.size_y = list.h;

	scrollbar_v_draw(#scroll);

}