// Scintilla source code edit control /** @file Style.cxx ** Defines the font and colour style for a class of text. **/ // Copyright 1998-2001 by Neil Hodgson // The License.txt file describes the conditions under which this software may be distributed. #include #include "Platform.h" #include "Scintilla.h" #include "Style.h" Style::Style() { aliasOfDefaultFont = true; Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff), Platform::DefaultFontSize(), 0, SC_CHARSET_DEFAULT, false, false, false, false, caseMixed, true, true, false); } Style::Style(const Style &source) { Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff), 0, 0, 0, false, false, false, false, caseMixed, true, true, false); fore.desired = source.fore.desired; back.desired = source.back.desired; characterSet = source.characterSet; bold = source.bold; italic = source.italic; size = source.size; eolFilled = source.eolFilled; underline = source.underline; caseForce = source.caseForce; visible = source.visible; changeable = source.changeable; hotspot = source.hotspot; } Style::~Style() { if (aliasOfDefaultFont) font.SetID(0); else font.Release(); aliasOfDefaultFont = false; } Style &Style::operator=(const Style &source) { if (this == &source) return * this; Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff), 0, 0, SC_CHARSET_DEFAULT, false, false, false, false, caseMixed, true, true, false); fore.desired = source.fore.desired; back.desired = source.back.desired; characterSet = source.characterSet; bold = source.bold; italic = source.italic; size = source.size; eolFilled = source.eolFilled; underline = source.underline; caseForce = source.caseForce; visible = source.visible; changeable = source.changeable; return *this; } void Style::Clear(ColourDesired fore_, ColourDesired back_, int size_, const char *fontName_, int characterSet_, bool bold_, bool italic_, bool eolFilled_, bool underline_, ecaseForced caseForce_, bool visible_, bool changeable_, bool hotspot_) { fore.desired = fore_; back.desired = back_; characterSet = characterSet_; bold = bold_; italic = italic_; size = size_; fontName = fontName_; eolFilled = eolFilled_; underline = underline_; caseForce = caseForce_; visible = visible_; changeable = changeable_; hotspot = hotspot_; if (aliasOfDefaultFont) font.SetID(0); else font.Release(); aliasOfDefaultFont = false; } void Style::ClearTo(const Style &source) { Clear( source.fore.desired, source.back.desired, source.size, source.fontName, source.characterSet, source.bold, source.italic, source.eolFilled, source.underline, source.caseForce, source.visible, source.changeable, source.hotspot); } bool Style::EquivalentFontTo(const Style *other) const { if (bold != other->bold || italic != other->italic || size != other->size || characterSet != other->characterSet) return false; if (fontName == other->fontName) return true; if (!fontName) return false; if (!other->fontName) return false; return strcmp(fontName, other->fontName) == 0; } void Style::Realise(Surface &surface, int zoomLevel, Style *defaultStyle, bool extraFontFlag) { sizeZoomed = size + zoomLevel; if (sizeZoomed sizeZoomed = 2; if (aliasOfDefaultFont) font.SetID(0); else font.Release(); int deviceHeight = surface.DeviceHeightFont(sizeZoomed); aliasOfDefaultFont = defaultStyle && (EquivalentFontTo(defaultStyle) || !fontName); if (aliasOfDefaultFont) { font.SetID(defaultStyle->font.GetID()); } else if (fontName) { font.Create(fontName, characterSet, deviceHeight, bold, italic, extraFontFlag); } else { font.SetID(0); } ascent = surface.Ascent(font); descent = surface.Descent(font); // Probably more typographically correct to include leading // but that means more complex drawing as leading must be erased //lineHeight = surface.ExternalLeading() + surface.Height(); externalLeading = surface.ExternalLeading(font); lineHeight = surface.Height(font); aveCharWidth = surface.AverageCharWidth(font); spaceWidth = surface.WidthChar(font, ' '); }
