recycled-ni-neutrino/src/gui/widget/hintbox.cpp

/*
	Neutrino-GUI  -   DBoxII-Project

	Copyright (C) 2001 Steffen Hehn 'McClean'
	Homepage: http://dbox.cyberphoria.org/
	Copyright (C) 2008-2009, 2011, 2013 Stefan Seyfried

	License: GPL

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/


#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gui/widget/hintbox.h>

#include <global.h>
#include <neutrino.h>

#define borderwidth 4


#define HINTBOX_MAX_HEIGHT 420

CHintBox::CHintBox(const neutrino_locale_t Caption, const char * const Text, const int Width, const char * const Icon)
{
	const char * caption_tmp = g_Locale->getText(Caption);
	init(caption_tmp, Text, Width, Icon);
}

CHintBox::CHintBox(const neutrino_locale_t Caption, const neutrino_locale_t Text, const int Width, const char * const Icon)
{
	const char * caption_tmp = g_Locale->getText(Caption);
	const char * text_tmp = g_Locale->getText(Text);
	init(caption_tmp, text_tmp, Width, Icon);
}

CHintBox::CHintBox(const char * const Caption, const char * const Text, const int Width, const char * const Icon)
{
	init(Caption, Text, Width, Icon);
}

CHintBox::CHintBox(const char * const Caption, const neutrino_locale_t Text, const int Width, const char * const Icon)
{
	const char * text_tmp = g_Locale->getText(Text);
	init(Caption, text_tmp, Width, Icon);
}
void CHintBox::init(const char * const Caption, const char * const Text, const int Width, const char * const Icon)
{
	char * begin;
	char * pos;
	int    nw;
	int    scrollWidth = 0;
	int    maxLineWidth = 0;

	message = strdup(Text);

	width   = Width;

	theight = g_Font[SNeutrinoSettings::FONT_TYPE_MENU_TITLE]->getHeight();
	fheight = g_Font[SNeutrinoSettings::FONT_TYPE_MENU]->getHeight();
	height  = theight + fheight;
	textStartX = 0;

	caption = Caption;

	begin   = message;

	while (true)
	{
		height += fheight;
		if (height > HINTBOX_MAX_HEIGHT)
			height -= fheight;

		line.push_back(begin);
		pos = strchr(begin, '\n');
		if (pos != NULL)
		{
			*pos = 0;
			begin = pos + 1;
		}
		else
			break;
	}
	if (fheight != 0)
		entries_per_page = ((height - theight) / fheight) - 1;
	else	/* avoid division by zero */
		entries_per_page = 1;
	current_page = 0;

	unsigned int additional_width;

	if (entries_per_page < line.size())
		scrollWidth = 15;
	else
		scrollWidth = 0;
	additional_width = 20 + scrollWidth;

	if (Icon != NULL)
	{
		iconfile = Icon;
		additional_width += 30;
	}
	else
		iconfile = "";

	nw = additional_width + g_Font[SNeutrinoSettings::FONT_TYPE_MENU_TITLE]->getRenderWidth(caption);

	if (nw > width)
		width = nw;

	for (std::vector<char *>::const_iterator it = line.begin(); it != line.end(); ++it)
	{
		int w = g_Font[SNeutrinoSettings::FONT_TYPE_MENU]->getRenderWidth(*it);
		maxLineWidth = std::max(maxLineWidth, w);
		nw = additional_width + w;
		if (nw > width)
			width = nw;
	}

	/* make sure we don't overflow the usable area */
	if (nw > (int)CFrameBuffer::getInstance()->getScreenWidth())
		width = CFrameBuffer::getInstance()->getScreenWidth();
	textStartX = (width - scrollWidth - maxLineWidth) / 2;

	window = NULL;
}

CHintBox::~CHintBox(void)
{
	hide();
	free(message);
}

void CHintBox::paint(void)
{
	if (window != NULL)
	{
		/*
		 * do not paint stuff twice:
		 * => thread safety needed by movieplayer.cpp:
		 *    one thread calls our paint method, the other one our hide method
		 * => no memory leaks
		 */
		return;
	}

	CFrameBuffer* frameBuffer = CFrameBuffer::getInstance();
	window = new CFBWindow(frameBuffer->getScreenX() + ((frameBuffer->getScreenWidth() - width ) >> 1),
			       frameBuffer->getScreenY() + ((frameBuffer->getScreenHeight() - height) >> 2),
			       width + borderwidth,
			       height + borderwidth);
	refresh();
}

void CHintBox::refresh(void)
{
	if (window == NULL)
	{
		return;
	}

	//window->paintBoxRel(borderwidth, height, width, borderwidth, COL_SHADOW_PLUS_0);
	//window->paintBoxRel(width, borderwidth, borderwidth, height - borderwidth, COL_SHADOW_PLUS_0);
	window->paintBoxRel(width - 20, borderwidth, borderwidth + 20, height - borderwidth - 20, COL_SHADOW_PLUS_0, RADIUS_LARGE, CORNER_TOP); // right
	window->paintBoxRel(borderwidth, height-20, width, borderwidth+20, COL_SHADOW_PLUS_0, RADIUS_LARGE, CORNER_BOTTOM); // bottom

	CComponentsHeader header(window->x, window->y, width, theight, caption, iconfile);
	header.paint(CC_SAVE_SCREEN_NO);

#if 0
	//window->paintBoxRel(0, 0, width, theight, (CFBWindow::color_t)COL_MENUHEAD_PLUS_0);
	window->paintBoxRel(0, 0, width, theight, (CFBWindow::color_t)COL_MENUHEAD_PLUS_0, RADIUS_LARGE, CORNER_TOP);//round

	if (!iconfile.empty())
	{
		int iw, ih;
		CFrameBuffer::getInstance()->getIconSize(iconfile.c_str(), &iw, &ih);
		//window->paintIcon(iconfile.c_str(), 8, 5);
		window->paintIcon(iconfile.c_str(), 10, 0, theight);
		//window->RenderString(g_Font[SNeutrinoSettings::FONT_TYPE_MENU_TITLE], iw+20, theight, width - 20-iw, g_Locale->getText(caption), COL_MENUHEAD_TEXT);
		window->RenderString(g_Font[SNeutrinoSettings::FONT_TYPE_MENU_TITLE], iw+20, theight, width - 20-iw, caption, COL_MENUHEAD_TEXT);
	}
	else
		window->RenderString(g_Font[SNeutrinoSettings::FONT_TYPE_MENU_TITLE], 10, theight, width - 10, caption, COL_MENUHEAD_TEXT);
#endif
	//window->paintBoxRel(0, theight, width, (entries_per_page + 1) * fheight, (CFBWindow::color_t)COL_MENUCONTENT_PLUS_0);
	window->paintBoxRel(0, theight, width, (entries_per_page + 1) * fheight, (CFBWindow::color_t)COL_MENUCONTENT_PLUS_0, RADIUS_LARGE, CORNER_BOTTOM);//round

	int count = entries_per_page;
	int ypos  = theight + (fheight >> 1);

	for (std::vector<char *>::const_iterator it = line.begin() + (entries_per_page * current_page); ((it != line.end()) && (count > 0)); ++it, count--)
		window->RenderString(g_Font[SNeutrinoSettings::FONT_TYPE_MENU], textStartX, (ypos += fheight), width, *it, COL_MENUCONTENT_TEXT);

	if (entries_per_page < line.size())
	{
		ypos = theight + (fheight >> 1);
		window->paintBoxRel(width - 15, ypos, 15, entries_per_page * fheight, COL_SCROLLBAR_PASSIVE_PLUS_0);
		unsigned int marker_size = (entries_per_page * fheight) / ((line.size() + entries_per_page - 1) / entries_per_page);
		window->paintBoxRel(width - 13, ypos + current_page * marker_size, 11, marker_size, COL_SCROLLBAR_ACTIVE_PLUS_0);
	}
}

bool CHintBox::has_scrollbar(void)
{
	return (entries_per_page < line.size());
}

void CHintBox::scroll_up(void)
{
	if (current_page > 0)
	{
		current_page--;
		refresh();
	}
}

void CHintBox::scroll_down(void)
{
	if ((entries_per_page * (current_page + 1)) <= line.size())
	{
		current_page++;
		refresh();
	}
}

void CHintBox::hide(void)
{
	if (window != NULL)
	{
		delete window;
		window = NULL;
	}
}

int ShowHint(const neutrino_locale_t Caption, const char * const Text, const int Width, int timeout, const char * const Icon)
{
	const char * caption = g_Locale->getText(Caption);

	return ShowHint(caption, Text, Width, timeout, Icon);
}

int ShowHint(const char * const Caption, const char * const Text, const int Width, int timeout, const char * const Icon)
{
	neutrino_msg_t msg;
	neutrino_msg_data_t data;

 	CHintBox * hintBox = new CHintBox(Caption, Text, Width, Icon);
	hintBox->paint();

	if ( timeout == -1 )
		timeout = 5; /// default timeout 5 sec
		//timeout = g_settings.timing[SNeutrinoSettings::TIMING_INFOBAR];

	uint64_t timeoutEnd = CRCInput::calcTimeoutEnd( timeout );

	int res = messages_return::none;

	while ( ! ( res & ( messages_return::cancel_info | messages_return::cancel_all ) ) )
	{
		g_RCInput->getMsgAbsoluteTimeout( &msg, &data, &timeoutEnd );

		if ((msg == CRCInput::RC_timeout) || (msg == CRCInput::RC_ok))
		{
			res = messages_return::cancel_info;
		}
		else if(msg == CRCInput::RC_home)
		{
			res = messages_return::cancel_all;
		}
		else if ((hintBox->has_scrollbar()) && ((msg == CRCInput::RC_up) || (msg == CRCInput::RC_down)))
		{
			if (msg == CRCInput::RC_up)
				hintBox->scroll_up();
			else
				hintBox->scroll_down();
		}
		else if (CNeutrinoApp::getInstance()->listModeKey(msg)) {
			// do nothing
		}
		else if(msg == CRCInput::RC_mode) {
			res = messages_return::handled;
			break;
		}
		else if((msg == (neutrino_msg_t) g_settings.key_switchformat) || (msg == (neutrino_msg_t) g_settings.key_next43mode)) {
			res = messages_return::cancel_all;
			g_RCInput->postMsg(msg, data);
		}
		else
		{
			res = CNeutrinoApp::getInstance()->handleMsg(msg, data);
			if (res & messages_return::unhandled)
			{

				// leave here and handle above...
				g_RCInput->postMsg(msg, data);
				res = messages_return::cancel_all;
			}
		}
	}

	hintBox->hide();
	delete hintBox;
	return res;
}

int ShowHint(const neutrino_locale_t Caption, const neutrino_locale_t Text, const int Width, int timeout, const char * const Icon)
{
	return ShowHint(Caption, g_Locale->getText(Text),Width,timeout,Icon);
}

int ShowHint(const char * const Caption, const neutrino_locale_t Text, const int Width, int timeout, const char * const Icon)
{
	return ShowHint(Caption, g_Locale->getText(Text),Width,timeout,Icon);
}