1 files changed, 89 insertions, 0 deletions
diff --git a/src/Style.cxx b/src/Style.cxx
new file mode 100644
index 000000000..271d98fc2
--- /dev/null
+++ b/src/Style.cxx
@@ -0,0 +1,89 @@
+// Scintilla source code edit control
+// Style.cxx - defines the font and colour style for a class of text
+// Copyright 1998-2000 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#include <string.h>
+
+#include "Platform.h"
+
+#include "Style.h"
+
+Style::Style() {
+	Clear(Colour(0,0,0), Colour(0xff,0xff,0xff),
+	        Platform::DefaultFontSize(), 0,
+		false, false, false);
+}
+	
+Style::~Style() {
+	if (!aliasOfDefaultFont)
+		font.Release();
+}
+
+Style &Style::operator=(const Style &source) {
+	if (this == &source)
+		return *this;
+	Clear(Colour(0,0,0), Colour(0xff,0xff,0xff),
+	        Platform::DefaultFontSize(), 0,
+		false, false, false);
+	fore.desired = source.fore.desired;
+	back.desired = source.back.desired;
+	bold = source.bold;
+	italic = source.italic;
+	size = source.size;
+	fontName = source.fontName;
+	eolFilled = source.eolFilled;
+	return *this;
+}
+
+void Style::Clear(Colour fore_, Colour back_, int size_, const char *fontName_, 
+	bool bold_, bool italic_, bool eolFilled_) {
+	fore.desired = fore_;
+	back.desired = back_;
+	bold = bold_;
+	italic = italic_;
+	size = size_;
+	fontName = fontName_;
+	eolFilled = eolFilled_;
+	if (!aliasOfDefaultFont)
+		font.Release();
+	aliasOfDefaultFont = false;
+}
+
+bool Style::EquivalentFontTo(const Style *other) const {
+	if (bold != other->bold ||
+		italic != other->italic ||
+		size != other->size)
+		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) {
+	int sizeZoomed = size + zoomLevel;
+	if (sizeZoomed <= 2)	// Hangs if sizeZoomed <= 1
+		sizeZoomed = 2;
+		
+	int deviceHeight = (sizeZoomed * surface.LogPixelsY()) / 72;
+	aliasOfDefaultFont = defaultStyle && EquivalentFontTo(defaultStyle);
+	if (aliasOfDefaultFont) {
+		font.SetID(defaultStyle->font.GetID());
+	} else if (fontName) {
+		font.Create(fontName, deviceHeight, bold, italic);
+	}
+
+	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, ' ');
+}