X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=lib%2Fruby%2Fgfx.c;h=9c3af378f5aa8c6a616024b357de21a440215f76;hb=1500155bf5c3f465d865aeec6ede12f33dcdb8a5;hp=9384d1904be9731026911339652c1fc64a8a62ad;hpb=2ddfa640af28b592ecf4295f0b1b7b43c923f707;p=swftools.git

diff --git a/lib/ruby/gfx.c b/lib/ruby/gfx.c
index 9384d19..9c3af37 100644
--- a/lib/ruby/gfx.c
+++ b/lib/ruby/gfx.c
@@ -215,8 +215,23 @@ 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_has_alpha(VALUE cls)
+{
+    Get_Image(image,cls)
+    int size = image->image->width * image->image->height;
+    gfxcolor_t*data = image->image->data;
+    int t;
+    for(t=0;t<size;t++) {
+	if(data->a!=255) 
+	    return Qtrue;
+    }
+    return Qfalse;
+}
 static VALUE image_save_jpeg(VALUE cls, VALUE _filename, VALUE quality)
 {
     Get_Image(image,cls)
@@ -627,6 +642,35 @@ 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)
@@ -664,6 +708,7 @@ 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);
@@ -671,6 +716,7 @@ void Init_gfx()
     rb_define_method(Bitmap, "width", image_width, 0);
     rb_define_method(Bitmap, "height", image_height, 0);
     rb_define_method(Bitmap, "rescale", image_rescale, 2);
+    rb_define_method(Bitmap, "has_alpha", image_has_alpha, 0);
     
     Glyph = rb_define_class_under(GFX, "Glyph", rb_cObject);
     rb_define_method(Glyph, "polygon", glyph_polygon, 0);