minetest/src/irrlicht_changes/static_text.cpp

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// Copyright (C) 2016 Nathanaël 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 <vector>
#include <string>
#include <iostream>
#include <IGUISkin.h>
#include <IGUIEnvironment.h>
#include <IGUIFont.h>
#include <IVideoDriver.h>
#include <rect.h>
#include <SColor.h>
#if USE_FREETYPE
#include "cguittfont/xCGUITTFont.h"
#endif
#include "util/string.h"
namespace irr
{
#if USE_FREETYPE
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), OverrideColorEnabled(false), OverrideBGColorEnabled(false), WordWrap(false), Background(background),
RestrainTextInside(true), RightToLeft(false),
OverrideColor(video::SColor(101,255,255,255)), BGColor(video::SColor(101,210,210,210)),
OverrideFont(0), LastBreakFont(0)
{
#ifdef _DEBUG
setDebugName("StaticText");
#endif
Text = text.c_str();
cText = text;
if (environment && environment->getSkin())
{
BGColor = environment->getSkin()->getColor(gui::EGDC_3D_FACE);
}
}
//! 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)
{
if ( !OverrideBGColorEnabled ) // skin-colors can change
BGColor = skin->getColor(gui::EGDC_3D_FACE);
driver->draw2DRectangle(BGColor, 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
if (cText.size())
{
IGUIFont* font = getActiveFont();
if (font)
{
if (!WordWrap)
{
// TODO: add colors here
if (VAlign == EGUIA_LOWERRIGHT)
{
frameRect.UpperLeftCorner.Y = frameRect.LowerRightCorner.Y -
font->getDimension(L"A").Height - font->getKerningHeight();
}
if (HAlign == EGUIA_LOWERRIGHT)
{
frameRect.UpperLeftCorner.X = frameRect.LowerRightCorner.X -
font->getDimension(cText.c_str()).Width;
}
irr::gui::CGUITTFont *tmp = static_cast<irr::gui::CGUITTFont*>(font);
tmp->draw(cText, frameRect,
OverrideColorEnabled ? OverrideColor : skin->getColor(isEnabled() ? EGDC_BUTTON_TEXT : EGDC_GRAY_TEXT),
HAlign == EGUIA_CENTER, VAlign == EGUIA_CENTER, (RestrainTextInside ? &AbsoluteClippingRect : NULL));
}
else
{
if (font != LastBreakFont)
breakText();
core::rect<s32> r = frameRect;
s32 height = font->getDimension(L"A").Height + font->getKerningHeight();
s32 totalHeight = height * BrokenText.size();
if (VAlign == EGUIA_CENTER)
{
r.UpperLeftCorner.Y = r.getCenter().Y - (totalHeight / 2);
}
else if (VAlign == EGUIA_LOWERRIGHT)
{
r.UpperLeftCorner.Y = r.LowerRightCorner.Y - totalHeight;
}
irr::video::SColor previous_color(255, 255, 255, 255);
for (u32 i=0; i<BrokenText.size(); ++i)
{
if (HAlign == EGUIA_LOWERRIGHT)
{
r.UpperLeftCorner.X = frameRect.LowerRightCorner.X -
font->getDimension(BrokenText[i].c_str()).Width;
}
//std::vector<irr::video::SColor> colors;
//std::wstring str;
EnrichedString str = BrokenText[i];
//str = colorizeText(BrokenText[i].c_str(), colors, previous_color);
//if (!colors.empty())
// previous_color = colors[colors.size() - 1];
irr::gui::CGUITTFont *tmp = static_cast<irr::gui::CGUITTFont*>(font);
tmp->draw(str, r,
previous_color, // FIXME
HAlign == EGUIA_CENTER, false, (RestrainTextInside ? &AbsoluteClippingRect : NULL));
r.LowerRightCorner.Y += height;
r.UpperLeftCorner.Y += height;
}
}
}
}
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();
breakText();
}
//! 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)
{
OverrideColor = color;
OverrideColorEnabled = true;
}
//! Sets another color for the text.
void StaticText::setBackgroundColor(video::SColor color)
{
BGColor = color;
OverrideBGColorEnabled = true;
Background = true;
}
//! Sets whether to draw the background
void StaticText::setDrawBackground(bool draw)
{
Background = draw;
}
//! Gets the background color
video::SColor StaticText::getBackgroundColor() const
{
return BGColor;
}
//! Checks if background drawing is enabled
bool StaticText::isDrawBackgroundEnabled() const
{
_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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
{
_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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;
}
#if IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR <= 7
const video::SColor& StaticText::getOverrideColor() const
#else
video::SColor StaticText::getOverrideColor() const
#endif
{
return OverrideColor;
}
//! Sets if the static text should use the overide color or the
//! color in the gui skin.
void StaticText::enableOverrideColor(bool enable)
{
OverrideColorEnabled = enable;
}
bool StaticText::isOverrideColorEnabled() const
{
_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
return OverrideColorEnabled;
}
//! Enables or disables word wrap for using the static text as
//! multiline text control.
void StaticText::setWordWrap(bool enable)
{
WordWrap = enable;
breakText();
}
bool StaticText::isWordWrapEnabled() const
{
_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
return WordWrap;
}
void StaticText::setRightToLeft(bool rtl)
{
if (RightToLeft != rtl)
{
RightToLeft = rtl;
breakText();
}
}
bool StaticText::isRightToLeft() const
{
return RightToLeft;
}
//! Breaks the single text line.
void StaticText::breakText()
{
if (!WordWrap)
return;
BrokenText.clear();
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));
}
//! Sets the new caption of this element.
void StaticText::setText(const EnrichedString &text)
{
IGUIElement::setText(text.c_str());
cText = text;
if (text.hasBackground()) {
setBackgroundColor(text.getBackground());
}
breakText();
}
void StaticText::updateAbsolutePosition()
{
IGUIElement::updateAbsolutePosition();
breakText();
}
//! Returns the height of the text in pixels when it is drawn.
s32 StaticText::getTextHeight() const
{
IGUIFont* font = getActiveFont();
if (!font)
return 0;
s32 height = font->getDimension(L"A").Height + font->getKerningHeight();
if (WordWrap)
height *= BrokenText.size();
return height;
}
s32 StaticText::getTextWidth() const
{
IGUIFont * font = getActiveFont();
if(!font)
return 0;
if(WordWrap)
{
s32 widest = 0;
for(u32 line = 0; line < BrokenText.size(); ++line)
{
s32 width = font->getDimension(BrokenText[line].c_str()).Width;
if(width > widest)
widest = width;
}
return widest;
}
else
{
return font->getDimension(cText.c_str()).Width;
}
}
//! Writes attributes of the element.
//! Implement this to expose the attributes of your element for
//! scripting languages, editors, debuggers or xml serialization purposes.
void StaticText::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const
{
IGUIStaticText::serializeAttributes(out,options);
out->addBool ("Border", Border);
out->addBool ("OverrideColorEnabled",OverrideColorEnabled);
out->addBool ("OverrideBGColorEnabled",OverrideBGColorEnabled);
out->addBool ("WordWrap", WordWrap);
out->addBool ("Background", Background);
out->addBool ("RightToLeft", RightToLeft);
out->addBool ("RestrainTextInside", RestrainTextInside);
out->addColor ("OverrideColor", OverrideColor);
out->addColor ("BGColor", BGColor);
out->addEnum ("HTextAlign", HAlign, GUIAlignmentNames);
out->addEnum ("VTextAlign", VAlign, GUIAlignmentNames);
// out->addFont ("OverrideFont", OverrideFont);
}
//! Reads attributes of the element
void StaticText::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
{
IGUIStaticText::deserializeAttributes(in,options);
Border = in->getAttributeAsBool("Border");
enableOverrideColor(in->getAttributeAsBool("OverrideColorEnabled"));
OverrideBGColorEnabled = in->getAttributeAsBool("OverrideBGColorEnabled");
setWordWrap(in->getAttributeAsBool("WordWrap"));
Background = in->getAttributeAsBool("Background");
RightToLeft = in->getAttributeAsBool("RightToLeft");
RestrainTextInside = in->getAttributeAsBool("RestrainTextInside");
OverrideColor = in->getAttributeAsColor("OverrideColor");
BGColor = in->getAttributeAsColor("BGColor");
setTextAlignment( (EGUI_ALIGNMENT) in->getAttributeAsEnumeration("HTextAlign", GUIAlignmentNames),
(EGUI_ALIGNMENT) in->getAttributeAsEnumeration("VTextAlign", GUIAlignmentNames));
// OverrideFont = in->getAttributeAsFont("OverrideFont");
}
} // end namespace gui
#endif // USE_FREETYPE
} // end namespace irr
#endif // _IRR_COMPILE_WITH_GUI_