M src/Font.cc → src/Font.cc

@@ -19,10 +19,20 @@ // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-//$Id: Font.cc,v 1.10 2002/09/03 12:05:01 fluxgen Exp $
+//$Id: Font.cc,v 1.11 2002/10/13 22:27:21 fluxgen Exp $
 
 
 #include "Font.hh"
+#include "FontImp.hh"
+
+// for antialias 
+#ifdef USE_XFT
+#include "XftFontImp.hh"
+#endif // USE_XFT
+
+// standard font system
+#include "XFontImp.hh"
+#include "XmbFontImp.hh"
 
 #ifdef    HAVE_CONFIG_H
 #include "../config.h"
@@ -50,231 +60,92 @@ #endif //HAVE_SETLOCALE
 
 #include "StringUtil.hh"
 
-namespace FbTk
-{
+namespace FbTk {
 
-bool Font::m_multibyte = false; //TODO: fix multibyte
+bool Font::m_multibyte = false; 
+bool Font::m_utf8mode = false;
 
-Font::Font(Display *display, const char *name):m_loaded(false), 
-m_display(display) {
-	m_font.fontstruct = 0;
-	m_font.set_extents = 0;
-	m_font.set = 0;
+Font::Font(const char *name, bool antialias) {
 	
 	// MB_CUR_MAX returns the size of a char in the current locale
-	if (MB_CUR_MAX > 1)
-			m_multibyte = true;
+	if (MB_CUR_MAX > 1) // more than one byte, then we're multibyte
+		m_multibyte = true;
+
+	char *s; // temporary string for enviroment variable
+	// check for utf-8 mode
+	if (((s = getenv("LC_ALL")) && *s) ||
+		((s = getenv("LC_CTYPE")) && *s) ||
+		((s = getenv("LANG")) && *s)) {
+		if (strstr(s, "UTF-8"))
+			m_utf8mode = true;
+	}
+
+	// create the right font implementation
+#ifdef USE_XFT
+	if (antialias) {
+		m_fontimp = new XftFontImp();
+	}
+#endif //USE_XFT
+	// if we didn't create a Xft font then create basic font
+	if (m_fontimp.get() == 0) {
+		if (m_multibyte || m_utf8mode)
+			m_fontimp = std::auto_ptr<FontImp>(new XmbFontImp(0, m_utf8mode));
+		else // basic font implementation
+			m_fontimp = std::auto_ptr<FontImp>(new XFontImp(0));
+	}
 	
-	if (name!=0) {
+	if (name != 0) {
 		load(name);
 	}
 
 }
 
 Font::~Font() {
-	freeFont();
-}
 
-bool Font::load(const char *name) {
-	if (m_multibyte) {
-		XFontSet set = createFontSet(m_display, name);
-		if (!set)
-			return false;
-		freeFont();
-		
-		m_font.set = set;		
-		m_font.set_extents = XExtentsOfFontSet(m_font.set);
-
-	} else {
-		XFontStruct *font = XLoadQueryFont(m_display, name);
-		if (font==0)
-			return false;
-		freeFont(); //free old font
-		m_font.fontstruct = font; //set new font
-	}	
-
-	m_loaded = true; //mark the font loaded
-	
-	return true;
 }
 
-bool Font::loadFromDatabase(XrmDatabase &database, const char *rname, const char *rclass) {
-	assert(rname);
-	assert(rclass);
+void Font::setAntialias(bool flag) {
 
-	XrmValue value;
-	char *value_type;
+#ifdef USE_XFT
+	bool is_antialias = typeid(m_fontimp) == typeid(XftFontImp);	
 
-	//This should probably be moved to a Database class so we can keep
-	//track of database init	
-	
-	if (XrmGetResource(database, rname, rclass, &value_type, &value)) {
-		#ifdef DEBUG
-		std::cerr<<__FILE__<<"("<<__LINE__<<"): Load font:"<<value.addr<<std::endl;
-		#endif
-		return load(value.addr);		
+	if (flag &&  !is_antialias) {
+		m_fontimp = std::auto_ptr<FontImp>(new XftFontImp(m_fontstr.c_str()));
+	} else if (!flag && is_antialias) 
+#endif // USE_XFT
+	{
+		if (m_multibyte || m_utf8mode)
+			m_fontimp = std::auto_ptr<FontImp>(new XmbFontImp(m_fontstr.c_str(), m_utf8mode));
+		else
+			m_fontimp = std::auto_ptr<FontImp>(new XFontImp(m_fontstr.c_str()));
 	}
-	
-	return false;
+}
 
-}
-unsigned int Font::textWidth(const char *text, unsigned int size) const {
-	if (text==0)
-		return 0;
-	if (multibyte()) {
-		XRectangle ink, logical;
-		XmbTextExtents(m_font.set, text, size,
-			&ink, &logical);
-		return logical.width;
+bool Font::load(const char *name) {
+	if (name == 0)
+		return false;
+	bool ret_val = m_fontimp->load(name);
+	if (ret_val && name == 0) { //prevent from having a bad fontimp
+		m_fontstr = name; // if the load really succeded then set font string
 	} else {
-		assert(m_font.fontstruct);
-		return XTextWidth(m_font.fontstruct, 
-			text, size);
+		m_fontstr = "";
 	}
-	
-	return 0;
-}
 
-unsigned int Font::height() const {
-	if (!isLoaded())
-		return 0;
-
-	if (multibyte() && fontSetExtents())
-		return fontSetExtents()->max_ink_extent.height;
-	if (fontStruct())
-		return fontStruct()->ascent + fontStruct()->descent;
-
-	return 0;
+	return ret_val;
 }
 
-XFontSet Font::createFontSet(Display *display, const char *fontname) {
-	XFontSet fs;
-	const int FONT_ELEMENT_SIZE=50;
-	char **missing, *def = "-";
-	int nmissing, pixel_size = 0, buf_size = 0;
-	char weight[FONT_ELEMENT_SIZE], slant[FONT_ELEMENT_SIZE];
-
-	fs = XCreateFontSet(display,
-					fontname, &missing, &nmissing, &def);
-	if (fs && (! nmissing)) return fs;
-
-#ifdef HAVE_SETLOCALE
-	if (! fs) {
-		if (nmissing) XFreeStringList(missing);
-
-		setlocale(LC_CTYPE, "C");
-		fs = XCreateFontSet(display, fontname,
-			&missing, &nmissing, &def);
-		setlocale(LC_CTYPE, "");
-	}
-#endif // HAVE_SETLOCALE
-
-	if (fs) {
-		XFontStruct **fontstructs;
-		char **fontnames;
-		XFontsOfFontSet(fs, &fontstructs, &fontnames);
-		fontname = fontnames[0];
-	}
-
-	getFontElement(fontname, weight, FONT_ELEMENT_SIZE,
-		 "-medium-", "-bold-", "-demibold-", "-regular-", 0);
-	getFontElement(fontname, slant, FONT_ELEMENT_SIZE,
-		 "-r-", "-i-", "-o-", "-ri-", "-ro-", 0);
-	getFontSize(fontname, &pixel_size);
-
-	if (! strcmp(weight, "*")) 
-		std::strncpy(weight, "medium", FONT_ELEMENT_SIZE);
-	if (! strcmp(slant, "*")) 
-		std::strncpy(slant, "r", FONT_ELEMENT_SIZE);
-	if (pixel_size < 3) 
-		pixel_size = 3;
-	else if (pixel_size > 97) 
-		pixel_size = 97;
-
-	buf_size = strlen(fontname) + (FONT_ELEMENT_SIZE * 2) + 64;
-	char *pattern2 = new char[buf_size];
-	snprintf(pattern2, buf_size - 1,
-		 "%s,"
-		 "-*-*-%s-%s-*-*-%d-*-*-*-*-*-*-*,"
-		 "-*-*-*-*-*-*-%d-*-*-*-*-*-*-*,*",
-		 fontname, weight, slant, pixel_size, pixel_size);
-	fontname = pattern2;
-
-	if (nmissing)
-		XFreeStringList(missing);
-	if (fs)
-		XFreeFontSet(display, fs);
-
-	fs = XCreateFontSet(display, fontname,
-					&missing, &nmissing, &def);
-	delete [] pattern2;
-
-	return fs;
+unsigned int Font::textWidth(const char *text, unsigned int size) const {
+	return m_fontimp->textWidth(text, size);
 }
 
-const char *Font::getFontElement(const char *pattern, char *buf, int bufsiz, ...) {
-	const char *p, *v;
-	char *p2;
-	va_list va;
-
-	va_start(va, bufsiz);
-	buf[bufsiz-1] = 0;
-	buf[bufsiz-2] = '*';
-	while((v = va_arg(va, char *)) != 0) {
-		p = StringUtil::strcasestr(pattern, v);
-		if (p) {
-			std::strncpy(buf, p+1, bufsiz-2);
-			p2 = strchr(buf, '-');
-			if (p2) *p2=0;
-			va_end(va);
-			return p;
-		}
-	}
-	va_end(va);
-	std::strncpy(buf, "*", bufsiz);
-	return 0;
+unsigned int Font::height() const {
+	return m_fontimp->height();
 }
 
-const char *Font::getFontSize(const char *pattern, int *size) {
-	const char *p;
-	const char *p2=0;
-	int n=0;
-
-	for (p=pattern; 1; p++) {
-		if (!*p) {
-			if (p2!=0 && n>1 && n<72) {
-				*size = n; return p2+1;
-			} else {
-				*size = 16; return 0;
-			}
-		} else if (*p=='-') {
-			if (n>1 && n<72 && p2!=0) {
-				*size = n;
-				return p2+1;
-			}
-			p2=p; n=0;
-		} else if (*p>='0' && *p<='9' && p2!=0) {
-			n *= 10;
-			n += *p-'0';
-		} else {
-			p2=0; n=0;
-		}
-	}
-}
-
-void Font::freeFont() {
-	//free memory
-	if (m_font.fontstruct!=0)
-		XFreeFont(m_display, m_font.fontstruct);
-	if (m_font.set)
-		XFreeFontSet(m_display, m_font.set);
-		
-	//clear struct
-	m_font.fontstruct = 0;
-	m_font.set = 0;
-	m_font.set_extents = 0;
-
-	m_loaded = false; //mark the font not loaded
-}
+void Font::drawText(Drawable w, int screen, GC gc, const char *text, size_t len, int x, int y) const {
+	if (text == 0 || len == 0)
+		return;
+	m_fontimp->drawText(w, screen, gc, text, len, x, y);		
+}	
 
 };

M src/Font.hh → src/Font.hh

@@ -19,7 +19,7 @@ // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
-//$Id: Font.hh,v 1.4 2002/08/04 15:55:13 fluxgen Exp $
+//$Id: Font.hh,v 1.5 2002/10/13 22:24:14 fluxgen Exp $
 
 #ifndef FBTK_FONT_HH
 #define FBTK_FONT_HH
@@ -27,16 +27,19 @@
 #include <X11/Xlib.h>
 #include <X11/Xresource.h>
 
-namespace FbTk
-{
+#include <string>
+#include <memory>
+
+namespace FbTk {
+
+class FontImp;
 
 /**
-	Handles loading of font.	
+	Handles the client to fontimp bridge.
 */
-class Font
-{
+class Font {
 public:
-	Font(Display *display, const char *name=0);
+	Font(const char *name=0, bool antialias = false);
 	virtual ~Font();
 	/** 
 		Load a font
@@ -44,23 +47,12 @@ @return true on success, else false and it'll fall back on the last
 		loaded font
 	*/
 	bool load(const char *name);
-	/**
-		Loads a font from database
-		@return true on success, else false and it'll fall back on the last
-		loaded font
-		@see load(const char *name)
-	*/
-	bool loadFromDatabase(XrmDatabase &database, const char *rname, const char *rclass);
-	/// @return true if a font is loaded, else false
-	inline bool isLoaded() const { return m_loaded; }
-	/// @return XFontStruct of  font, note: can be 0
-	inline const XFontStruct *fontStruct() const { return m_font.fontstruct; }
-	/// @return XFontSet of font, note: check isLoaded
-	inline const XFontSet &fontSet() const { return m_font.set; }
-	/// @return XFontSetExtents of font, note: can be 0
-	inline const XFontSetExtents *fontSetExtents() const { return m_font.set_extents; }
+
 	/// @return true if multibyte is enabled, else false
-	static inline bool multibyte() { return m_multibyte; }
+	static bool multibyte() { return m_multibyte; }
+	/// @return true if utf-8 mode is enabled, else false
+	static bool utf8() { return m_utf8mode; }
+	void setAntialias(bool flag);
 	/**
 		@param text text to check size
 		@param size length of text in bytes
@@ -68,24 +60,13 @@ @return size of text in pixels
 	*/
 	unsigned int textWidth(const char *text, unsigned int size) const;
 	unsigned int height() const;
-	/// @return display connection
-	Display *display() const { return m_display; }
+	void drawText(Drawable w, int screen, GC gc, const char *text, size_t len, int x, int y) const;
 private:
-	void freeFont();
-	static XFontSet createFontSet(Display *display, const char *fontname);
-	static const char *getFontSize(const char *pattern, int *size);
-	static const char *getFontElement(const char *pattern, char *buf, int bufsiz, ...);
-
-	struct FontType
-	{
-		XFontSet set;
-		XFontSetExtents *set_extents;
-		XFontStruct *fontstruct;
-	} m_font;
-
-	bool m_loaded;
+	
+	std::auto_ptr<FontImp> m_fontimp;
+	std::string m_fontstr;
 	static bool m_multibyte;
-	Display *m_display;
+	static bool m_utf8mode;
 };
 
 }; //end namespace FbTk