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irrlicht/source/Irrlicht/CGUIStaticText.cpp
cutealien c90238e87f Add getActiveColor functions to IGUIStaticText and IGUIButton 
Returns currently used color - depending on state and if override color is set.
Note: Not adding this to editbox for now as it's a bit more tricky there (selection changing color, so it has no single color).


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6165 dfc29bdd-3216-0410-991c-e03cc46cb475
2020-12-10 14:45:30 +00:00

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "CGUIStaticText.h"
#ifdef _IRR_COMPILE_WITH_GUI_
#include "IGUISkin.h"
#include "IGUIEnvironment.h"
#include "IGUIFont.h"
#include "IVideoDriver.h"
#include "rect.h"
namespace irr
{
namespace gui
{
//! constructor
CGUIStaticText::CGUIStaticText(const wchar_t* 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("CGUIStaticText");
#endif
Text = text;
if (environment && environment->getSkin())
{
BGColor = environment->getSkin()->getColor(gui::EGDC_3D_FACE);
}
}
//! destructor
CGUIStaticText::~CGUIStaticText()
{
if (OverrideFont)
OverrideFont->drop();
}
//! draws the element and its children
void CGUIStaticText::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 (Text.size())
{
IGUIFont* font = getActiveFont();
if (font)
{
if (!WordWrap)
{
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(Text.c_str()).Width;
}
font->draw(Text.c_str(), frameRect,
getActiveColor(),
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;
}
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;
}
font->draw(BrokenText[i].c_str(), r,
getActiveColor(),
HAlign == EGUIA_CENTER, false, (RestrainTextInside ? &AbsoluteClippingRect : NULL));
r.LowerRightCorner.Y += height;
r.UpperLeftCorner.Y += height;
}
}
}
}
IGUIElement::draw();
}
//! Sets another skin independent font.
void CGUIStaticText::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 * CGUIStaticText::getOverrideFont() const
{
return OverrideFont;
}
//! Get the font which is used right now for drawing
IGUIFont* CGUIStaticText::getActiveFont() const
{
if ( OverrideFont )
return OverrideFont;
IGUISkin* skin = Environment->getSkin();
if (skin)
return skin->getFont();
return 0;
}
//! Sets another color for the text.
void CGUIStaticText::setOverrideColor(video::SColor color)
{
OverrideColor = color;
OverrideColorEnabled = true;
}
//! Sets another color for the text.
void CGUIStaticText::setBackgroundColor(video::SColor color)
{
BGColor = color;
OverrideBGColorEnabled = true;
Background = true;
}
//! Sets whether to draw the background
void CGUIStaticText::setDrawBackground(bool draw)
{
Background = draw;
}
//! Gets the background color
video::SColor CGUIStaticText::getBackgroundColor() const
{
return BGColor;
}
//! Checks if background drawing is enabled
bool CGUIStaticText::isDrawBackgroundEnabled() const
{
return Background;
}
//! Sets whether to draw the border
void CGUIStaticText::setDrawBorder(bool draw)
{
Border = draw;
}
//! Checks if border drawing is enabled
bool CGUIStaticText::isDrawBorderEnabled() const
{
return Border;
}
void CGUIStaticText::setTextRestrainedInside(bool restrainTextInside)
{
RestrainTextInside = restrainTextInside;
}
bool CGUIStaticText::isTextRestrainedInside() const
{
return RestrainTextInside;
}
void CGUIStaticText::setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical)
{
HAlign = horizontal;
VAlign = vertical;
}
video::SColor CGUIStaticText::getOverrideColor() const
{
return OverrideColor;
}
irr::video::SColor CGUIStaticText::getActiveColor() const
{
if ( OverrideColorEnabled )
return OverrideColor;
IGUISkin* skin = Environment->getSkin();
if (skin)
return OverrideColorEnabled ? OverrideColor : skin->getColor(isEnabled() ? EGDC_BUTTON_TEXT : EGDC_GRAY_TEXT);
return OverrideColor;
}
//! Sets if the static text should use the override color or the
//! color in the gui skin.
void CGUIStaticText::enableOverrideColor(bool enable)
{
OverrideColorEnabled = enable;
}
bool CGUIStaticText::isOverrideColorEnabled() const
{
return OverrideColorEnabled;
}
//! Enables or disables word wrap for using the static text as
//! multiline text control.
void CGUIStaticText::setWordWrap(bool enable)
{
WordWrap = enable;
breakText();
}
bool CGUIStaticText::isWordWrapEnabled() const
{
return WordWrap;
}
void CGUIStaticText::setRightToLeft(bool rtl)
{
if (RightToLeft != rtl)
{
RightToLeft = rtl;
breakText();
}
}
bool CGUIStaticText::isRightToLeft() const
{
return RightToLeft;
}
//! Breaks the single text line.
void CGUIStaticText::breakText()
{
if (!WordWrap)
return;
BrokenText.clear();
IGUISkin* skin = Environment->getSkin();
IGUIFont* font = getActiveFont();
if (!font)
return;
LastBreakFont = font;
core::stringw line;
core::stringw word;
core::stringw whitespace;
s32 size = Text.size();
s32 length = 0;
s32 elWidth = RelativeRect.getWidth();
if (Border)
elWidth -= 2*skin->getSize(EGDS_TEXT_DISTANCE_X);
wchar_t c;
// 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 = Text[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;
}
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 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 = word.findFirst( wchar_t(0x00AD) );
if (where != -1)
{
core::stringw first = word.subString(0, where);
core::stringw second = word.subString(where, word.size() - where);
BrokenText.push_back(line + first + L"-");
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 = L"";
whitespace = L"";
}
if ( isWhitespace )
{
whitespace += c;
}
// compute line break
if (lineBreak)
{
line += whitespace;
line += word;
BrokenText.push_back(line);
line = L"";
word = L"";
whitespace = L"";
length = 0;
}
}
}
line += whitespace;
line += word;
BrokenText.push_back(line);
}
else
{
// right-to-left
for (s32 i=size; i>=0; --i)
{
c = Text[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 = L"";
whitespace = L"";
}
if (c != 0)
whitespace = core::stringw(&c, 1) + whitespace;
// compute line break
if (lineBreak)
{
line = whitespace + line;
line = word + line;
BrokenText.push_back(line);
line = L"";
word = L"";
whitespace = L"";
length = 0;
}
}
else
{
// yippee this is a word..
word = core::stringw(&c, 1) + word;
}
}
line = whitespace + line;
line = word + line;
BrokenText.push_back(line);
}
}
//! Sets the new caption of this element.
void CGUIStaticText::setText(const wchar_t* text)
{
IGUIElement::setText(text);
breakText();
}
void CGUIStaticText::updateAbsolutePosition()
{
IGUIElement::updateAbsolutePosition();
breakText();
}
//! Returns the height of the text in pixels when it is drawn.
s32 CGUIStaticText::getTextHeight() const
{
IGUIFont* font = getActiveFont();
if (!font)
return 0;
if (WordWrap)
{
s32 height = font->getDimension(L"A").Height + font->getKerningHeight();
return height* BrokenText.size();
}
else
{
// TODO: Text can have multiple lines which are not in BrokenText
// This is likely not correct. But as I have no time for further
// investigation I just fix it for now by return the true height here.
return font->getDimension(Text.c_str()).Height;
}
}
s32 CGUIStaticText::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(Text.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 CGUIStaticText::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 CGUIStaticText::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
{
IGUIStaticText::deserializeAttributes(in,options);
Border = in->getAttributeAsBool("Border", Border);
enableOverrideColor(in->getAttributeAsBool("OverrideColorEnabled", OverrideColorEnabled));
OverrideBGColorEnabled = in->getAttributeAsBool("OverrideBGColorEnabled", OverrideBGColorEnabled);
setWordWrap(in->getAttributeAsBool("WordWrap", WordWrap));
Background = in->getAttributeAsBool("Background", Background);
RightToLeft = in->getAttributeAsBool("RightToLeft", RightToLeft);
RestrainTextInside = in->getAttributeAsBool("RestrainTextInside", RestrainTextInside);
OverrideColor = in->getAttributeAsColor("OverrideColor", OverrideColor);
BGColor = in->getAttributeAsColor("BGColor", BGColor);
setTextAlignment( (EGUI_ALIGNMENT) in->getAttributeAsEnumeration("HTextAlign", GUIAlignmentNames, (s32)HAlign),
(EGUI_ALIGNMENT) in->getAttributeAsEnumeration("VTextAlign", GUIAlignmentNames, (s32)VAlign));
// OverrideFont = in->getAttributeAsFont("OverrideFont");
}
} // end namespace gui
} // end namespace irr
#endif // _IRR_COMPILE_WITH_GUI_
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