added prepare() to ruby gfx interface

[swftools.git] / lib / ruby / gfx.c

diff --git a/lib/ruby/gfx.c b/lib/ruby/gfx.c
index 11addd2..edca2e3 100644 (file)
--- a/lib/ruby/gfx.c
+++ b/lib/ruby/gfx.c
@@ -63,6 +63,9 @@ static VALUE doc_initialize(VALUE cls, VALUE _filename)
     const char*filename = StringValuePtr(_filename);
     doc->fontlist = gfxfontlist_create();
     doc->doc = pdfdriver->open(pdfdriver, filename);
+    if(!doc->doc) {
+       rb_raise(rb_eIOError, "couldn't open %s", filename);
+    }
     return cls;
 }
 
@@ -212,6 +215,9 @@ static VALUE image_rescale(VALUE cls, VALUE _width, VALUE _height)
     Get_Image(image2,v_image2)
     image2->doc = image->doc;
     image2->image = gfximage_rescale(image->image, width, height);
+    if(!image2->image) {
+       rb_raise(rb_eArgError, "Can't rescale to size %dx%d", width, height);
+    }
     return v_image2;
 }
 static VALUE image_save_jpeg(VALUE cls, VALUE _filename, VALUE quality)
@@ -281,6 +287,16 @@ static VALUE glyph_advance(VALUE cls)
     return rb_float_new(glyph->font->font->glyphs[glyph->nr].advance);
 }
 
+static VALUE glyph_bbox(VALUE cls)
+{
+    Get_Glyph(glyph,cls);
+    gfxbbox_t bbox = gfxline_getbbox(glyph->font->font->glyphs[glyph->nr].line);
+    return rb_ary_new3(4, rb_float_new(bbox.xmin), 
+                         rb_float_new(bbox.ymin), 
+                         rb_float_new(bbox.xmax), 
+                         rb_float_new(bbox.ymax));
+}
+
 static VALUE glyph_unicode(VALUE cls)
 {
     Get_Glyph(glyph,cls);
@@ -334,6 +350,23 @@ static VALUE font_glyphs(VALUE cls)
     return font->glyph_array;
 }
 
+static VALUE font_kerning(VALUE cls)
+{
+    Get_Font(font,cls);
+    gfxkerning_t*kerning = font->font->kerning;
+    int kerning_size = font->font->kerning_size;
+    volatile VALUE a = rb_ary_new2(kerning_size);
+    int t;
+    for(t=0;t<kerning_size;t++) {
+       volatile VALUE tuple = rb_ary_new2(3);
+       rb_ary_store(tuple, 0, INT2FIX(kerning[t].c1));
+       rb_ary_store(tuple, 1, INT2FIX(kerning[t].c2));
+       rb_ary_store(tuple, 2, INT2FIX(kerning[t].advance));
+       rb_ary_store(a, t, tuple);
+    }
+    return a;
+}
+
 // ------------------------ gfx device --------------------------------------
 
 typedef struct device_internal {
@@ -597,6 +630,35 @@ static VALUE page_render(VALUE cls, VALUE device)
     return cls;
 }
 
+static VALUE doc_prepare(VALUE cls, VALUE device)
+{
+    Get_Doc(doc,cls);
+
+    gfxdevice_t dev;
+    device_internal_t i;
+    i.v = device;
+    i.doc = doc;
+
+    dev.internal = &i;
+    dev.setparameter = rb_setparameter;
+    dev.startpage = rb_startpage;
+    dev.startclip = rb_startclip;
+    dev.endclip = rb_endclip;
+    dev.stroke = rb_stroke;
+    dev.fill = rb_fill;
+    dev.fillbitmap = rb_fillbitmap;
+    dev.fillgradient = rb_fillgradient;
+    dev.addfont = rb_addfont;
+    dev.drawchar = rb_drawchar;
+    dev.drawlink = rb_drawlink;
+    dev.endpage = rb_endpage;
+    dev.finish = rb_finish;
+
+    doc->doc->prepare(doc->doc, &dev);
+    return cls;
+}
+
+
 // ---------------------- global functions ----------------------------------
 
 VALUE gfx_setparameter(VALUE module, VALUE _key, VALUE _value)
@@ -634,6 +696,7 @@ void Init_gfx()
     rb_define_method(Document, "initialize", doc_initialize, 1);
     rb_define_method(Document, "page", doc_get_page, 1);
     rb_define_method(Document, "each_page", doc_each_page, 0);
+    rb_define_method(Document, "prepare", doc_prepare, 1);
     
     Bitmap = rb_define_class_under(GFX, "Bitmap", rb_cObject);
     rb_define_method(Bitmap, "save_jpeg", image_save_jpeg, 2);
@@ -646,12 +709,15 @@ void Init_gfx()
     rb_define_method(Glyph, "polygon", glyph_polygon, 0);
     rb_define_method(Glyph, "unicode", glyph_unicode, 0);
     rb_define_method(Glyph, "advance", glyph_advance, 0);
+    rb_define_method(Glyph, "bbox", glyph_bbox, 0);
     
     Font = rb_define_class_under(GFX, "Font", rb_cObject);
     rb_define_method(Font, "name", font_name, 0);
     rb_define_method(Font, "ascent", font_ascent, 0);
     rb_define_method(Font, "descent", font_descent, 0);
     rb_define_method(Font, "glyphs", font_glyphs, 0);
+    rb_define_method(Font, "kerning", font_kerning, 0);
+    rb_define_method(Font, "get_kerning_table", font_kerning, 0);
     
     Device = rb_define_class_under(GFX, "Device", rb_cObject);
     rb_define_method(Device, "startpage", noop, -1);