Kouhei Sutou
kous****@users*****
Fri May 19 18:07:49 JST 2006
Index: kazehakase/data/ext/ruby/kz/actions/Makefile.am
diff -u kazehakase/data/ext/ruby/kz/actions/Makefile.am:1.3 kazehakase/data/ext/ruby/kz/actions/Makefile.am:1.4
--- kazehakase/data/ext/ruby/kz/actions/Makefile.am:1.3 Sat Apr 29 12:14:12 2006
+++ kazehakase/data/ext/ruby/kz/actions/Makefile.am Fri May 19 18:07:48 2006
@@ -7,6 +7,7 @@
reload-ruby.rb \
reload-without-fragment.rb \
ruby-dialog.rb \
+ view-pdf-as-image.rb \
text-link.rb
EXTRA_DIST = \
Index: kazehakase/data/ext/ruby/kz/actions/view-pdf-as-image.rb
diff -u /dev/null kazehakase/data/ext/ruby/kz/actions/view-pdf-as-image.rb:1.1
--- /dev/null Fri May 19 18:07:49 2006
+++ kazehakase/data/ext/ruby/kz/actions/view-pdf-as-image.rb Fri May 19 18:07:48 2006
@@ -0,0 +1,123 @@
+require 'erb'
+require 'fileutils'
+
+begin
+ require "poppler"
+rescue LoadError
+end
+
+def h(str)
+ ERB::Util.h(str)
+end
+
+def image_type
+ "png"
+end
+
+def image_suffix
+ "png"
+end
+
+def image_name(i)
+ "#{i}.#{image_suffix}"
+end
+
+def thumbnail_name(i)
+ "#{i}-thumb.#{image_suffix}"
+end
+
+def ruby_poppler_is_unavailable(action, kz)
+ statusbar_timeout = 3 * 1000
+ statusbar_id = kz.statusbar.get_context_id(action.name)
+ kz.statusbar.push(statusbar_id, _("need to install Ruby/Poppler"))
+ Kz.pop_statusbar(kz, statusbar_id, statusbar_timeout)
+end
+
+def start_downloader(kz, uri)
+ tmp_dir = "/tmp/kazehakase"
+ FileUtils.mkdir_p(tmp_dir)
+ Kz.add_exit_proc {FileUtils.rm_rf(tmp_dir)}
+ filename = File.join(tmp_dir, File.basename(uri))
+ dl = Kz::Downloader.new(uri, filename)
+ dl.signal_connect("completed") do
+ Kz.barrier do
+ completed(kz, tmp_dir, filename)
+ end
+ end
+ Kz::DownloaderGroup.add(dl)
+ dl.to_file
+end
+
+def make_images(kz, pages, tmp_dir, &block)
+ scale = 0.1
+ Gtk.idle_add do
+ Kz.barrier do
+ page, i = pages.shift
+ width, height = page.size
+ pixbuf_width, pixbuf_height = page.size.collect {|x| x * scale}
+
+ pixbuf = Gdk::Pixbuf.new(Gdk::Pixbuf::COLORSPACE_RGB, true, 8,
+ width, height)
+ page.render_to_pixbuf(0, 0, width, height, 1, 0, pixbuf)
+ output = File.join(tmp_dir, image_name(i))
+ pixbuf.save(output, image_type)
+
+ pixbuf = Gdk::Pixbuf.new(Gdk::Pixbuf::COLORSPACE_RGB, true, 8,
+ pixbuf_width, pixbuf_height)
+ page.render_to_pixbuf(0, 0, width, height, scale, 0, pixbuf)
+ thumbnail = File.join(tmp_dir, thumbnail_name(i))
+ pixbuf.save(thumbnail, image_type)
+
+ pixbuf = nil
+ GC.start
+
+ if pages.empty?
+ tab = block.call
+ tab.reload(Kz::EmbedReloadFlag::BYPASS_CACHE)
+ tab = nil
+ GC.start
+ false
+ else
+ true
+ end
+ end
+ end
+end
+
+def completed(kz, tmp_dir, filename)
+ doc = Poppler::Document.new("file://#{filename}")
+ tab = nil
+ scale = 0.1
+ pages = []
+ doc.each_with_index do |page, i|
+ pages.push([page, i])
+ end
+
+ make_images(kz, pages, tmp_dir) {tab}
+
+ html_file = File.join(tmp_dir, "index.html")
+ File.open(html_file, "w") do |f|
+ f << "<html><head><title>#{h doc.title}</title></head><body>\n"
+ doc.n_pages.times do |i|
+ f << "<a href=\"#{h image_name(i)}\">\n"
+ f << "<img src=\"#{h thumbnail_name(i)}\">\n"
+ f << "</a>\n"
+ end
+ f << "\n</body></html>"
+ end
+ tab = kz.open_new_tab("file://#{html_file}")
+end
+
+def act_view_pdf_as_image(action, group, kz)
+ unless ::Object.const_defined?(:Poppler)
+ ruby_poppler_is_unavailable(action, kz)
+ return
+ end
+ return unless kz.current_page
+
+ uri = nil
+ uri = kz.mouse_event_info.link if kz.mouse_event_info
+ return if uri.nil?
+
+ start_downloader(kz, uri)
+end