From 3842b45ed589842e3aa94a3706ceebdd79442cf1 Mon Sep 17 00:00:00 2001
From: arif <devnull@localhost>
Date: Fri, 31 Oct 2008 21:22:10 +0000
Subject: [PATCH] *** empty log message ***

---
 lib/glcomp/glpangofont.c | 148 +++++++++++++++++++++++++++++++++++++++
 lib/glcomp/glpangofont.h |  11 +++
 2 files changed, 159 insertions(+)
 create mode 100644 lib/glcomp/glpangofont.c
 create mode 100644 lib/glcomp/glpangofont.h

diff --git a/lib/glcomp/glpangofont.c b/lib/glcomp/glpangofont.c
new file mode 100644
index 000000000..d4cd7abc8
--- /dev/null
+++ b/lib/glcomp/glpangofont.c
@@ -0,0 +1,148 @@
+#include "glpangofont.h"
+#define DEFAULT_FONT_FAMILY "Arial"
+#define DEFAULT_FONT_SIZE 32
+#define ANTIALIAS
+
+
+static int file_exists(const char * filename);
+
+static int file_exists(const char * filename)
+{
+	FILE * file;
+	if ( file = fopen(filename, "r"))
+    {
+        fclose(file);
+        return 1;
+    }
+    return 0;
+}
+
+PangoLayout *  get_pango_layout (cairo_t	*cr,
+		  char	*markup_text,
+		  char* fontdescription,
+		  double	*width,
+		  double	*height
+		  )
+{
+    PangoFontDescription *desc;
+	PangoFontMap* fontmap;
+	PangoContext *context;
+    PangoLayout *layout;
+    int pango_width, pango_height;
+    char *text;
+    PangoAttrList *attr_list;
+	cairo_font_options_t* options;
+	fontmap = pango_cairo_font_map_get_default();
+	context = pango_cairo_font_map_create_context(PANGO_CAIRO_FONT_MAP(fontmap));
+	options=cairo_font_options_create();
+#ifdef ANTIALIAS
+//	cairo_font_options_set_antialias(options,CAIRO_ANTIALIAS_GRAY);
+#endif
+	cairo_font_options_set_hint_style(options,CAIRO_HINT_STYLE_FULL);
+	cairo_font_options_set_hint_metrics(options,CAIRO_HINT_METRICS_ON);
+	cairo_font_options_set_subpixel_order(options,CAIRO_SUBPIXEL_ORDER_BGR);
+//	pango_cairo_context_set_font_options(context, options);
+
+	desc = pango_font_description_from_string(fontdescription);
+//	pango_font_description_set_family(desc, "CENTAUR.TTF");
+    //pango_font_description_set_size (desc, DEFAULT_FONT_SIZE * PANGO_SCALE/2.0);
+//	pango_font_description_set_style    (desc,PANGO_STYLE_ITALIC);
+
+    if (! pango_parse_markup (markup_text, -1, '\0', &attr_list, &text, NULL, NULL))
+		return (PangoLayout*)0;
+	layout = pango_layout_new (context);
+	pango_layout_set_text (layout, text, -1);
+	pango_layout_set_font_description (layout, desc);
+    pango_layout_set_attributes (layout, attr_list);
+    pango_font_description_free (desc);
+	pango_layout_set_alignment (layout,PANGO_ALIGN_CENTER);
+
+	if (width || height)
+	pango_layout_get_size (layout, &pango_width, &pango_height);
+
+    if (width)
+	*width = (double) pango_width / PANGO_SCALE;
+
+    if (height)
+	*height = (double) pango_height / PANGO_SCALE;
+
+    return layout;
+}
+
+cairo_status_t
+writer (void *closure, const unsigned char *data, unsigned int length)
+{
+	int a;
+	if (length == fwrite(data, 1, length, (FILE *)closure))
+	{
+		return CAIRO_STATUS_SUCCESS;
+
+	}
+
+	return CAIRO_STATUS_WRITE_ERROR;
+}
+
+
+
+
+
+
+int create_font_file(char* fontdescription,char* fontfile,float gw,float gh)
+{
+
+	char buf[]=" ";
+	int ncolumns=16;
+	int counter=0;
+	int X=0;
+	int Y=0;
+	cairo_t *cr;
+    cairo_surface_t *surface;
+    PangoLayout *layout;
+    double width, height;
+	FILE* output_file;
+	char* c;
+	int	return_value=-1;
+
+	if(file_exists(fontfile))	//checking if font file has already been created
+		return 0;
+	//create the right size canvas for character set
+	surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,(float)ncolumns*gw,gh*(float)ncolumns);
+	cr = cairo_create(surface);
+	//draw a rectangle with same size of canvas
+	cairo_rectangle(cr, 0, 0,(float)ncolumns*gw,gh*(float)ncolumns);
+   //fill rectangle with black
+	cairo_set_source_rgb(cr, 0, 0, 0);
+	cairo_fill(cr);
+	//set pen color to white
+	cairo_set_source_rgb(cr, 1, 1, 1);
+
+	for (c=0;c < 256 ; c++)
+	{
+		counter++;
+		if ((c !=38) && (c !=60)&& (c !=128) && (c < 129))
+			buf[0]=c;
+		else
+		buf[0]=' ';
+		cairo_move_to(cr,X,Y);
+		layout = get_pango_layout (cr,buf,fontdescription, &width, &height);
+		pango_cairo_show_layout(cr, layout);
+		X=X+gw;
+		if (counter==ncolumns)
+		{
+			X=0;Y=Y+gh;
+			counter=0;
+		}
+	}	
+	output_file = fopen(fontfile, "wb+");	
+	if(output_file)
+	{
+		cairo_surface_write_to_png_stream(surface, writer, output_file);
+		return_value=0;
+	}
+	fclose(output_file);
+	g_object_unref (layout);
+    cairo_destroy(cr);
+    cairo_surface_destroy(surface);
+	return return_value;
+}
+
diff --git a/lib/glcomp/glpangofont.h b/lib/glcomp/glpangofont.h
new file mode 100644
index 000000000..3b1fd482a
--- /dev/null
+++ b/lib/glcomp/glpangofont.h
@@ -0,0 +1,11 @@
+
+#ifndef GLPANGOFONT_H
+#define GLPANGOFONT_H
+#include <cairo.h>
+#include <pango/pangocairo.h>
+#include <png.h>
+//creates a font file with given name and font description
+//returns non-zero if fails
+int create_font_file(char* fontdescription,char* fontfile,float gw,float gh);
+#endif
+
-- 
2.40.0