src/clientobject.cpp

// Copyright (C) 2002-2012 Nikolaus Gebhardt
// Copyright (C) 2016 Nathanaëlle Courant:
//   Modified the functions to use EnrichedText instead of string.
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h

#include "static_text.h"
#ifdef _IRR_COMPILE_WITH_GUI_

#include <IGUIFont.h>
#include <IVideoDriver.h>
#include <rect.h>
#include <SColor.h>

#include "CGUITTFont.h"
#include "util/string.h"

namespace irr
{

namespace gui
{
//! constructor
StaticText::StaticText(const EnrichedString &text, bool border,
			IGUIEnvironment* environment, IGUIElement* parent,
			s32 id, const core::rect<s32>& rectangle,
			bool background)
: IGUIStaticText(environment, parent, id, rectangle),
	HAlign(EGUIA_UPPERLEFT), VAlign(EGUIA_UPPERLEFT),
	Border(border), WordWrap(false), Background(background),
	RestrainTextInside(true), RightToLeft(false),
	OverrideFont(0), LastBreakFont(0)
{
	#ifdef _DEBUG
	setDebugName("StaticText");
	#endif

	setText(text);
}


//! destructor
StaticText::~StaticText()
{
	if (OverrideFont)
		OverrideFont->drop();
}

//! draws the element and its children
void StaticText::draw()
{
	if (!IsVisible)
		return;

	IGUISkin* skin = Environment->getSkin();
	if (!skin)
		return;
	video::IVideoDriver* driver = Environment->getVideoDriver();

	core::rect<s32> frameRect(AbsoluteRect);

	// draw background

	if (Background)
		driver->draw2DRectangle(getBackgroundColor(), frameRect, &AbsoluteClippingRect);

	// draw the border

	if (Border)
	{
		skin->draw3DSunkenPane(this, 0, true, false, frameRect, &AbsoluteClippingRect);
		frameRect.UpperLeftCorner.X += skin->getSize(EGDS_TEXT_DISTANCE_X);
	}

	// draw the text
	IGUIFont *font = getActiveFont();
	if (font && BrokenText.size()) {
		if (font != LastBreakFont)
			updateText();

		core::rect<s32> r = frameRect;
		s32 height_line = font->getDimension(L"A").Height + font->getKerningHeight();
		s32 height_total = height_line * BrokenText.size();
		if (VAlign == EGUIA_CENTER && WordWrap)
		{
			r.UpperLeftCorner.Y = r.getCenter().Y - (height_total / 2);
		}
		else if (VAlign == EGUIA_LOWERRIGHT)
		{
			r.UpperLeftCorner.Y = r.LowerRightCorner.Y - height_total;
		}
		if (HAlign == EGUIA_LOWERRIGHT)
		{
			r.UpperLeftCorner.X = r.LowerRightCorner.X -
				getTextWidth();
		}

		irr::video::SColor previous_color(255, 255, 255, 255);
		for (const EnrichedString &str : BrokenText) {
			if (HAlign == EGUIA_LOWERRIGHT)
			{
				r.UpperLeftCorner.X = frameRect.LowerRightCorner.X -
					font->getDimension(str.c_str()).Width;
			}

			if (font->getType() == irr::gui::EGFT_CUSTOM) {
				CGUITTFont *tmp = static_cast<CGUITTFont*>(font);
				tmp->draw(str,
					r, HAlign == EGUIA_CENTER, VAlign == EGUIA_CENTER,
					(RestrainTextInside ? &AbsoluteClippingRect : NULL));
			} else
			{
				// Draw non-colored text
				font->draw(str.c_str(),
					r, str.getDefaultColor(), // TODO: Implement colorization
					HAlign == EGUIA_CENTER, VAlign == EGUIA_CENTER,
					(RestrainTextInside ? &AbsoluteClippingRect : NULL));
			}


			r.LowerRightCorner.Y += height_line;
			r.UpperLeftCorner.Y += height_line;
		}
	}

	IGUIElement::draw();
}


//! Sets another skin independent font.
void StaticText::setOverrideFont(IGUIFont* font)
{
	if (OverrideFont == font)
		return;

	if (OverrideFont)
		OverrideFont->drop();

	OverrideFont = font;

	if (OverrideFont)
		OverrideFont->grab();

	updateText();
}

//! Gets the override font (if any)
IGUIFont * StaticText::getOverrideFont() const
{
	return OverrideFont;
}

//! Get the font which is used right now for drawing
IGUIFont* StaticText::getActiveFont() const
{
	if ( OverrideFont )
		return OverrideFont;
	IGUISkin* skin = Environment->getSkin();
	if (skin)
		return skin->getFont();
	return 0;
}

//! Sets another color for the text.
void StaticText::setOverrideColor(video::SColor color)
{
	ColoredText.setDefaultColor(color);
	updateText();
}


//! Sets another color for the text.
void StaticText::setBackgroundColor(video::SColor color)
{
	ColoredText.setBackground(color);
	Background = true;
}


//! Sets whether to draw the background
void StaticText::setDrawBackground(bool draw)
{
	Background = draw;
}


//! Gets the background color
video::SColor StaticText::getBackgroundColor() const
{
	IGUISkin *skin = Environment->getSkin();

	return (ColoredText.hasBackground() || !skin) ?
		ColoredText.getBackground() : skin->getColor(gui::EGDC_3D_FACE);
}


//! Checks if background drawing is enabled
bool StaticText::isDrawBackgroundEnabled() const
{
	return Background;
}


//! Sets whether to draw the border
void StaticText::setDrawBorder(bool draw)
{
	Border = draw;
}


//! Checks if border drawing is enabled
bool StaticText::isDrawBorderEnabled() const
{
	return Border;
}


void StaticText::setTextRestrainedInside(bool restrainTextInside)
{
	RestrainTextInside = restrainTextInside;
}


bool StaticText::isTextRestrainedInside() const
{
	return RestrainTextInside;
}


void StaticText::setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical)
{
	HAlign = horizontal;
	VAlign = vertical;
}


video::SColor StaticText::getOverrideColor() const
{
	return ColoredText.getDefaultColor();
}

#if IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR > 8
video::SColor StaticText::getActiveColor() const
{
	return getOverrideColor();
}
#endif

//! Sets if the static text should use the overide color or the
//! color in the gui skin.
void StaticText::enableOverrideColor(bool enable)
{
	// TODO
}


bool StaticText::isOverrideColorEnabled() const
{
	return true;
}


//! Enables or disables word wrap for using the static text as
//! multiline text control.
void StaticText::setWordWrap(bool enable)
{
	WordWrap = enable;
	updateText();
}


bool StaticText::isWordWrapEnabled() const
{
	return WordWrap;
}


void StaticText::setRightToLeft(bool rtl)
{
	if (RightToLeft != rtl)
	{
		RightToLeft = rtl;
		updateText();
	}
}


bool StaticText::isRightToLeft() const
{
	return RightToLeft;
}


//! Breaks the single text line.
// Updates the font colors
void StaticText::updateText()
{
	const EnrichedString &cText = ColoredText;
	BrokenText.clear();

	if (cText.hasBackground())
		setBackgroundColor(cText.getBackground());
	else
		setDrawBackground(false);

	if (!WordWrap) {
		BrokenText.push_back(cText);
		return;
	}

	// Update word wrap

	IGUISkin* skin = Environment->getSkin();
	IGUIFont* font = getActiveFont();
	if (!font)
		return;

	LastBreakFont = font;

	EnrichedString line;
	EnrichedString word;
	EnrichedString whitespace;
	s32 size = cText.size();
	s32 length = 0;
	s32 elWidth = RelativeRect.getWidth();
	if (Border)
		elWidth -= 2*skin->getSize(EGDS_TEXT_DISTANCE_X);
	wchar_t c;

	//std::vector<irr::video::SColor> colors;

	// We have to deal with right-to-left and left-to-right differently
	// However, most parts of the following code is the same, it's just
	// some order and boundaries which change.
	if (!RightToLeft)
	{
		// regular (left-to-right)
		for (s32 i=0; i<size; ++i)
		{
			c = cText.getString()[i];
			bool lineBreak = false;

			if (c == L'\r') // Mac or Windows breaks
			{
				lineBreak = true;
				//if (Text[i+1] == L'\n') // Windows breaks
				//{
				//	Text.erase(i+1);
				//	--size;
				//}
				c = '\0';
			}
			else if (c == L'\n') // Unix breaks
			{
				lineBreak = true;
				c = '\0';
			}

			bool isWhitespace = (c == L' ' || c == 0);
			if ( !isWhitespace )
			{
				// part of a word
				//word += c;
				word.addChar(cText, i);
			}

			if ( isWhitespace || i == (size-1))
			{
				if (word.size())
				{
					// here comes the next whitespace, look if
					// we must break the last word to the next line.
					const s32 whitelgth = font->getDimension(whitespace.c_str()).Width;
					//const std::wstring sanitized = removeEscapes(word.c_str());
					const s32 wordlgth = font->getDimension(word.c_str()).Width;

					if (wordlgth > elWidth)
					{
						// This word is too long to fit in the available space, look for
						// the Unicode Soft HYphen (SHY / 00AD) character for a place to
						// break the word at
						int where = core::stringw(word.c_str()).findFirst( wchar_t(0x00AD) );
						if (where != -1)
						{
							EnrichedString first = word.substr(0, where);
							EnrichedString second = word.substr(where, word.size() - where);
							first.addCharNoColor(L'-');
							BrokenText.push_back(line + first);
							const s32 secondLength = font->getDimension(second.c_str()).Width;

							length = secondLength;
							line = second;
						}
						else
						{
							// No soft hyphen found, so there's nothing more we can do
							// break to next line
							if (length)
								BrokenText.push_back(line);
							length = wordlgth;
							line = word;
						}
					}
					else if (length && (length + wordlgth + whitelgth > elWidth))
					{
						// break to next line
						BrokenText.push_back(line);
						length = wordlgth;
						line = word;
					}
					else
					{
						// add word to line
						line += whitespace;
						line += word;
						length += whitelgth + wordlgth;
					}

					word.clear();
					whitespace.clear();
				}

				if ( isWhitespace && c != 0)
				{
					whitespace.addChar(cText, i);
				}

				// compute line break
				if (lineBreak)
				{
					line += whitespace;
					line += word;
					BrokenText.push_back(line);
					line.clear();
					word.clear();
					whitespace.clear();
					length = 0;
				}
			}
		}

		line += whitespace;
		line += word;
		BrokenText.push_back(line);
	}
	else
	{
		// right-to-left
		for (s32 i=size; i>=0; --i)
		{
			c = cText.getString()[i];
			bool lineBreak = false;

			if (c == L'\r') // Mac or Windows breaks
			{
				lineBreak = true;
				//if ((i>0) && Text[i-1] == L'\n') // Windows breaks
				//{
				//	Text.erase(i-1);
				//	--size;
				//}
				c = '\0';
			}
			else if (c == L'\n') // Unix breaks
			{
				lineBreak = true;
				c = '\0';
			}

			if (c==L' ' || c==0 || i==0)
			{
				if (word.size())
				{
					// here comes the next whitespace, look if
					// we must break the last word to the next line.
					const s32 whitelgth = font->getDimension(whitespace.c_str()).Width;
					const s32 wordlgth = font->getDimension(word.c_str()).Width;

					if (length && (length + wordlgth + whitelgth > elWidth))
					{
						// break to next line
						BrokenText.push_back(line);
						length = wordlgth;
						line = word;
					}
					else
					{
						// add word to line
						line = whitespace + line;
						line = word + line;
						length += whitelgth + wordlgth;
					}

					word.clear();
					whitespace.clear();
				}

				if (c != 0)
				//	whitespace = core::stringw(&c, 1) + whitespace;
				whitespace = cText.substr(i, 1) + whitespace;

				// compute line break
				if (lineBreak)
				{
					line = whitespace + line;
					line = word + line;
					BrokenText.push_back(line);
					line.clear();
					word.clear();
					whitespace.clear();
					length = 0;
				}
			}
			else
			{
				// yippee this is a word..
				//word = core::stringw(&c, 1) + word;
				word = cText.substr(i, 1) + word;
			}
		}

		line = whitespace + line;
		line = word + line;
		BrokenText.push_back(line);
	}
}


//! Sets the new caption of this element.
void StaticText::setText(const wchar_t* text)
{
	setText(EnrichedString(text, getOverrideColor()));
}

void StaticText::setText(const EnrichedString &text)
{
	ColoredText = text;
	IGUIElement::setText(ColoredText.c_str());
	updateText();
}

void StaticText::updateAbsolutePosition()
{
	IGUIElement::updateAbsolutePosition();
	updateText();
}


//! Returns the height of the text in pixels when it is drawn.
s32 StaticText::getTextHeight() const
{
	IGUIFont* font = getActiveFont();
	if (!font)
		return 0;

	if (WordWrap) {
		s32 height = font->getDimension(L"A").Height + font->getKerningHeight();
		return height * BrokenText.size();
	}
	// There may be intentional new lines without WordWrap
	return font->getDimension(BrokenText[0].c_str()).Height;
}


s32 StaticText::getTextWidth() const
{
	IGUIFont *font = getActiveFont();
	if (!font)
		return 0;

	s32 widest = 0;

	for (const EnrichedString &line : BrokenText) {
		s32 width = font->getDimension(line.c_str()).Width;

		if (width > widest)
			widest = width;
	}

	return widest;
}


} // end namespace gui

} // end namespace irr


#endif // _IRR_COMPILE_WITH_GUI_
	Commit message (Collapse)	Author	Age
*	Environment & IGameDef code refactoring (#4985)	Ner'zhul	2017-01-09
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	* Environment code refactoring * Cleanup includes & class declarations in client & server environment to improve build speed * ServerEnvironment::m_gamedef is now a pointer to Server instead of IGameDef, permitting to cleanup many casts. * Cleanup IGameDef * Move ITextureSource* IGameDef::getTextureSource() to Client only. * Also move ITextureSource IGameDef::tsrc() helper drop getShaderSource, getSceneManager, getSoundManager & getCamera abstract call * drop unused emerge() call * cleanup server unused functions (mentionned before) * Drop one unused parameter from ContentFeatures::updateTextures * move checkLocalPrivilege to Client * Remove some unnecessary casts * create_formspec_menu: remove IWritableTextureSource pointer, as client already knows it * Fix some comments * Change required IGameDef to Server/Client pointers * Previous change that game.cpp sometimes calls functions with Client + InventoryManager + IGameDef in same functions but it's the same objects * Remove duplicate Client pointer in GUIFormSpecMenu::GUIFormSpecMenu * drop ClientMap::sectorWasDrawn which is unused
*	Use more unordered_maps to improve performance in c++11 builds	Loic Blot	2016-10-06
\|
*	Use warningstream for log messages with WARNING	ShadowNinja	2015-10-14
\| \| \| \|	Remove DTIME macro and its uses, too
*	SAO: re-add old ActiveObjectTypes for a future migration layer	Loic Blot	2015-02-17
\|
*	Migrate to STL containers/algorithms.	Ilya Zhuravlev	2013-03-11
\|
*	Update Copyright Years	Sfan5	2013-02-24
\|
*	Change Minetest-c55 to Minetest	PilzAdam	2013-02-24
\|
*	Send animations, bone overrides and attachments in entity initialization. ↵	MirceaKitsune	2012-11-25
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Clients no longer have to be near an object when an animation or attachment is set to see the changes, and newly connected clients (or a client that simply renders the object for the first time) will get all of those settings. Therefore, the lua script no longer needs to run every X seconds either, just once per entity. Finish fixing the material color code. But it won't work until MineTest has dynamic lighting... another day another feature. Extra checks for the bone positioning / rotation code Many checks and consistency improvements to the client attachment code Make a separate function for checking if a client object is attached. A more in-depth change will be needed here to fix reading of invalid pointers Use a different method of fetching the parent. Fixes the mass segmentation faults when rendering an attachment (some still happen though) Major change to how attachments are handled. Fix the last segmentaton fault, which was due to the parent becoming invalid while being refreshed / removed which would bause the child to remain attached to nothing. Parents remove their children when being deleted themselves and add them back when re-added. Attachments are stored inside a 2D a vector which easily allows both a child to find their parent and a parent to find its children. Remove attachment list entry when an object is being permanently removed. Also avoid duplicate entries in this list when re-attaching the same object The "big code comments" can now go away. Client attachments almost work properly, and I know what else needs to be done
*	Switch the license to be LGPLv2/later, with small parts still remaining as ↵	Perttu Ahola	2012-06-05
\| \| \| \|	GPLv2/later, by agreement of major contributors
*	Player-is-SAO WIP	Perttu Ahola	2011-12-01
\|
*	Create framework for getting rid of global definitions of ↵	Perttu Ahola	2011-11-29
\| \| \| \|	node/tool/item/whatever types
*	mobv2	Perttu Ahola	2011-10-15
\|
*	Attempt to fix a problem with the factory mappings of objects residing in ↵	Perttu Ahola	2011-07-16
\| \| \| \|	different source files than the prototype objects that fill them in
*	reorganized a lot of stuff and modified mapgen and objects slightly while ↵	Perttu Ahola	2011-06-26
\| \| \| \|	doing it
*	All textures are are now searched first from the directory specified by the ↵	Perttu Ahola	2011-05-21
\| \| \| \|	texture_path setting.
*	Set oerkki1 to not be drawn in completely dark	Perttu Ahola	2011-04-25
\|
*	updated menu a bit, and some other small fixes	Perttu Ahola	2011-04-24
\|
*	Some work-in-progress in hp and mobs and a frightening amount of random fixes.	Perttu Ahola	2011-04-21
\|
*	fixed warnings reported by cppcheck	Perttu Ahola	2011-04-11
\|
*	implemented rats in new system to verify that it works	Perttu Ahola	2011-04-10
\|
*	items now fall by gravity... also some other random updating	Perttu Ahola	2011-04-10
\|
*	new object system	Perttu Ahola	2011-04-10
\|
*	Some progress on transitioning from MapBlockObject to ActiveObject.	Perttu Ahola	2011-04-08
\|
*	Removed lua stuff	Perttu Ahola	2011-04-03
\|
*	updated scripting api a bit	Perttu Ahola	2011-02-23
\| \| \| \| \| \|	--HG-- rename : data/luaobjects/test/client.lua => data/scripts/objects/test/client.lua rename : data/luaobjects/test/server.lua => data/scripts/objects/test/server.lua
*	mainly work on object scripting api	Perttu Ahola	2011-02-23
\|
*	some tidying	Perttu Ahola	2011-02-21
\|
*	preliminary lua scripting framework for objects	Perttu Ahola	2011-02-21
\|
*	Temporary commit; lots of test code and stuff	Perttu Ahola	2011-02-21