Class: TkHTML_File_Viewer
- Includes:
- TkComm
- Defined in:
- sample/tkextlib/tkHTML/ss.rb
Constant Summary collapse
- @@biggray =
These are images to use with the actual image specified in a “<img>” markup can’t be found.
TkPhotoImage.new(:data=><<'EOD') R0lGODdhPAA+APAAALi4uAAAACwAAAAAPAA+AAACQISPqcvtD6OctNqLs968+w+G4kiW5omm 6sq27gvH8kzX9o3n+s73/g8MCofEovGITCqXzKbzCY1Kp9Sq9YrNFgsAO/// EOD
- @@smgray =
TkPhotoImage.new(:data=><<'EOD') R0lGODdhOAAYAPAAALi4uAAAACwAAAAAOAAYAAACI4SPqcvtD6OctNqLs968+w+G4kiW5omm 6sq27gvH8kzX9m0VADv/ EOD
Constants included from TkComm
TkComm::GET_CONFIGINFO_AS_ARRAY, TkComm::GET_CONFIGINFOwoRES_AS_ARRAY, TkComm::TkExtlibAutoloadModule, TkComm::Tk_CMDTBL, TkComm::Tk_IDs, TkComm::Tk_WINDOWS, TkComm::USE_TCLs_LIST_FUNCTIONS, TkComm::WidgetClassNames
Constants included from TkUtil
TkUtil::None, TkUtil::RELEASE_DATE
Instance Method Summary collapse
-
#applet_cmd(w, arglist) ⇒ Object
This routine is called for every <APPLET> markup.
-
#clear_screen ⇒ Object
Clear the screen.
- #form_cmd(n, cmd, *args) ⇒ Object
-
#fullscreen ⇒ Object
Go from window mode to full-screen mode.
-
#fullscreen_off ⇒ Object
Go from full-screen mode back to window mode.
-
#href_binding(w, x, y) ⇒ Object
This binding fires when there is a click on a hyperlink.
- #hyper_cmd(*args) ⇒ Object
- #image_cmd(hs, *args) ⇒ Object
-
#initialize(file = nil) ⇒ TkHTML_File_Viewer
constructor
A new instance of TkHTML_File_Viewer.
- #key_press(w, keysym) ⇒ Object
-
#load_file(name) ⇒ Object
Load a file into the HTML widget.
-
#meta(w, tag, alist) ⇒ Object
This routine is called whenever a “<meta>” markup is seen.
- #move_big_image(b) ⇒ Object
-
#pick_font(size, attrs) ⇒ Object
A font chooser routine.
-
#pick_font_fs(size, attrs) ⇒ Object
This routine is called to pick fonts for the fullscreen view.
-
#process_url(url) ⇒ Object
Process the given URL.
-
#read_file(name) ⇒ Object
Read a file.
-
#refresh(*args) ⇒ Object
Refresh the current file.
-
#run_applet(size, w, arglist) ⇒ Object
This routine is called to run an applet.
-
#script_cmd(*args) ⇒ Object
This routine is called for every <SCRIPT> markup.
- #sel_load ⇒ Object
Methods included from TkComm
_at, _callback_entry?, _callback_entry_class?, _curr_cmd_id, _fromUTF8, _genobj_for_tkwidget, _next_cmd_id, _toUTF8, array2tk_list, #bind, #bind_all, #bind_append, #bind_append_all, #bind_remove, #bind_remove_all, #bindinfo, #bindinfo_all, bool, image_obj, #install_cmd, install_cmd, list, num_or_nil, num_or_str, number, procedure, simplelist, slice_ary, string, #subst, tk_tcl2ruby, uninstall_cmd, #uninstall_cmd, window
Methods included from TkEvent
#install_bind, #install_bind_for_event_class
Methods included from TkUtil
#_conv_args, _conv_args, #_fromUTF8, #_get_eval_enc_str, _get_eval_enc_str, #_get_eval_string, _get_eval_string, _symbolkey2str, #_symbolkey2str, #_toUTF8, #bool, bool, callback, eval_cmd, #hash_kv, hash_kv, install_cmd, #num_or_nil, num_or_nil, num_or_str, #num_or_str, number, #number, string, #string, uninstall_cmd, untrust
Constructor Details
#initialize(file = nil) ⇒ TkHTML_File_Viewer
Returns a new instance of TkHTML_File_Viewer.
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# File 'sample/tkextlib/tkHTML/ss.rb', line 27 def initialize(file = nil) @root = TkRoot.new(:title=>'HTML File Viewer', :iconname=>'HV') @fswin = nil @html = nil @html_fs = nil @hotkey = {} @applet_arg = TkVarAccess.new_hash('AppletArg') @images = {} @old_imgs = {} @big_imgs = {} @last_dir = Dir.pwd @last_file = '' @key_block = false Tk::HTML_Widget::ClippingWindow.bind('1', proc{|w, ksym| key_press(w, ksym)}, '%W Down') Tk::HTML_Widget::ClippingWindow.bind('3', proc{|w, ksym| key_press(w, ksym)}, '%W Up') Tk::HTML_Widget::ClippingWindow.bind('2', proc{|w, ksym| key_press(w, ksym)}, '%W Down') Tk::HTML_Widget::ClippingWindow.bind('KeyPress', proc{|w, ksym| key_press(w, ksym)}, '%W %K') ############################################ # # Build the half-size view of the page # = [ [['File', 0], ['Open', proc{sel_load()}, 0], ['Full Screen', proc{fullscreen()}, 0], ['Refresh', proc{refresh()}, 0], '---', ['Exit', proc{exit}, 1]] ] = @root.() @html = Tk::HTML_Widget.new(:width=>512, :height=>384, :padx=>5, :pady=>9, :formcommand=>proc{|*args| form_cmd(*args)}, :imagecommand=>proc{|*args| image_cmd(1, *args) }, :scriptcommand=>proc{|*args| script_cmd(*args) }, :appletcommand=>proc{|*args| applet_cmd(*args) }, :hyperlinkcommand=>proc{|*args| hyper_cmd(*args) }, :fontcommand=>proc{|*args| pick_font(*args) }, :appletcommand=>proc{|*args| run_applet('small', *args) }, :bg=>'white', :tablerelief=>:raised) @html.token_handler('meta', proc{|*args| (@html, *args)}) vscr = @html.(TkScrollbar.new) hscr = @html.(TkScrollbar.new) Tk.grid(@html, vscr, :sticky=>:news) Tk.grid(hscr, :sticky=>:ew) @root.grid_columnconfigure(0, :weight=>1) @root.grid_columnconfigure(1, :weight=>0) @root.grid_rowconfigure(0, :weight=>1) @root.grid_rowconfigure(1, :weight=>0) ############################################ @html.clipwin.focus # If an arguent was specified, read it into the HTML widget. # Tk.update if file && file != "" load_file(file) end end |
Instance Method Details
#applet_cmd(w, arglist) ⇒ Object
This routine is called for every <APPLET> markup
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# File 'sample/tkextlib/tkHTML/ss.rb', line 229 def applet_cmd(w, arglist) # puts "AppletCmd: w=#{w} arglist=#{arglist}" #TkLabel.new(w, :text=>"The Applet #{w}", :bd=>2, :relief=>raised) end |
#clear_screen ⇒ Object
Clear the screen.
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# File 'sample/tkextlib/tkHTML/ss.rb', line 260 def clear_screen if @html_fs && @html_fs.exist? w = @html_fs else w = @html end w.clear @old_imgs.clear @big_imgs.clear @hotkey.clear @images.each{|k, v| @old_imgs[k] = v } @images.clear end |
#form_cmd(n, cmd, *args) ⇒ Object
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# File 'sample/tkextlib/tkHTML/ss.rb', line 175 def form_cmd(n, cmd, *args) # p [n, cmd, *args] end |
#fullscreen ⇒ Object
Go from window mode to full-screen mode.
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# File 'sample/tkextlib/tkHTML/ss.rb', line 364 def fullscreen if @fswin && @fswin.exist? @fswin.deiconify Tk.update @fswin.raise return end width = @root.winfo_screenwidth height = @root.winfo_screenheight @fswin = TkToplevel.new(:overrideredirect=>true, :geometry=>"#{width}x#{height}+0+0") @html_fs = Tk::HTML_Widget.new(@fswin, :padx=>5, :pady=>9, :formcommand=>proc{|*args| form_cmd(*args) }, :imagecommand=>proc{|*args| image_cmd(0, *args) }, :scriptcommand=>proc{|*args| script_cmd(*args) }, :appletcommand=>proc{|*args| applet_cmd(*args) }, :hyperlinkcommand=>proc{|*args| hyper_cmd(*args) }, :appletcommand=>proc{|*args| run_applet('big', *args) }, :fontcommand=>proc{|*args| pick_font_fs(*args) }, :bg=>'white', :tablerelief=>:raised, :cursor=>:tcross) { pack(:fill=>:both, :expand=>true) token_handler('meta', proc{|*args| (self, *args)}) } clear_screen() @old_imgs.clear refresh() Tk.update @html_fs.clipwin.focus end |
#fullscreen_off ⇒ Object
Go from full-screen mode back to window mode.
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# File 'sample/tkextlib/tkHTML/ss.rb', line 351 def fullscreen_off @fswin.destroy @root.deiconify Tk.update @root.raise @html.clipwin.focus clear_screen() @old_imgs.clear refresh() end |
#href_binding(w, x, y) ⇒ Object
This binding fires when there is a click on a hyperlink
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# File 'sample/tkextlib/tkHTML/ss.rb', line 236 def href_binding(w, x, y) lst = w.href(x, y) unless lst.empty? process_url(lst) end end |
#hyper_cmd(*args) ⇒ Object
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# File 'sample/tkextlib/tkHTML/ss.rb', line 150 def hyper_cmd(*args) puts "HyperlinkCommand: #{args.inspect}" end |
#image_cmd(hs, *args) ⇒ Object
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# File 'sample/tkextlib/tkHTML/ss.rb', line 188 def image_cmd(hs, *args) fn = args[0] if @old_imgs.key?(fn) return (@images[fn] = @old_imgs.delete(fn)) end begin img = TkPhotoImage.new(:file=>fn) rescue return ((hs)? @@smallgray: @@biggray) end if hs img2 = TkPhotoImage.new img2.copy(img, :subsample=>[2,2]) img.delete img = img2 end if img.width * img.height > 20000 b = TkPhotoImage.new(:width=>img.width, :height=>img.height) @big_imgs[b] = img img = b Tk.after_idle(proc{ move_big_image(b) }) end @images[fn] = img img end |
#key_press(w, keysym) ⇒ Object
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# File 'sample/tkextlib/tkHTML/ss.rb', line 414 def key_press(w, keysym) return if @key_block @key_block = true Tk.after(250, proc{@key_block = false}) if @hotkey.key?(keysym) process_url(@hotkey[keysym]) end case keysym when 'Escape' if @fswin && @fswin.exist? fullscreen_off() else fullscreen() end end end |
#load_file(name) ⇒ Object
Load a file into the HTML widget
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# File 'sample/tkextlib/tkHTML/ss.rb', line 306 def load_file(name) return unless (doc = read_file(name)) clear_screen() @last_file = name if @html_fs && @html_fs.exist? w = @html_fs else w = @html end w.configure(:base=>name) w.parse(doc) w.configure(:cursor=>'top_left_arrow') @old_imgs.clear end |
#meta(w, tag, alist) ⇒ Object
This routine is called whenever a “<meta>” markup is seen.
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# File 'sample/tkextlib/tkHTML/ss.rb', line 329 def (w, tag, alist) v = Hash[*simplelist(alist)] if v.key?('key') && v.key?('href') @hotkey[v['key']] = w.resolve(v['href']) end if v.key?('next') @hotkey['Down'] =v['next'] end if v.key?('prev') @hotkey['Up'] =v['prev'] end if v.key?('other') @hotkey['o'] =v['other'] end end |
#move_big_image(b) ⇒ Object
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# File 'sample/tkextlib/tkHTML/ss.rb', line 181 def move_big_image(b) return unless @big_imgs.key?(b) b.copy(@big_imgs[b]) @big_imgs[b].delete @big_imgs.delete(b) end |
#pick_font(size, attrs) ⇒ Object
A font chooser routine.
html = pick_font
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# File 'sample/tkextlib/tkHTML/ss.rb', line 128 def pick_font(size, attrs) # puts "FontCmd: #{size} #{attrs}" [ ((attrs =~ /fixed/)? 'courier': 'charter'), (12 * (1.2**(size.to_f - 4.0))).to_i, ((attrs =~ /italic/)? 'italic': 'roman'), ((attrs =~ /bold/)? 'bold': 'normal') ].join(' ') end |
#pick_font_fs(size, attrs) ⇒ Object
This routine is called to pick fonts for the fullscreen view.
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# File 'sample/tkextlib/tkHTML/ss.rb', line 138 def pick_font_fs(size, attrs) baseFontSize = 24 # puts "FontCmd: #{size} #{attrs}" [ ((attrs =~ /fixed/)? 'courier': 'charter'), (baseFontSize * (1.2**(size.to_f - 4.0))).to_i, ((attrs =~ /italic/)? 'italic': 'roman'), ((attrs =~ /bold/)? 'bold': 'normal') ].join(' ') end |
#process_url(url) ⇒ Object
Process the given URL
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# File 'sample/tkextlib/tkHTML/ss.rb', line 293 def process_url(url) case url[0] when /^file:/ load_file(url[0][5..-1]) when /^exec:/ Tk.ip_eval(url[0][5..-1].tr('\\', ' ')) else load_file(url[0]) end end |
#read_file(name) ⇒ Object
Read a file
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# File 'sample/tkextlib/tkHTML/ss.rb', line 276 def read_file(name) begin fp = open(name, 'r') ret = fp.read(File.size(name)) rescue ret = nil fp = nil Tk.(:icon=>'error', :message=>"fail to open '#{name}'", :type=>:ok) ensure fp.close if fp end ret end |
#refresh(*args) ⇒ Object
Refresh the current file.
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# File 'sample/tkextlib/tkHTML/ss.rb', line 323 def refresh(*args) load_file(@last_file) if @last_file end |
#run_applet(size, w, arglist) ⇒ Object
This routine is called to run an applet
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# File 'sample/tkextlib/tkHTML/ss.rb', line 156 def run_applet(size, w, arglist) applet_arg.value = Hash[*simplelist(arglist)] return unless @applet_arg.key?('src') src = @html.remove(@applet_arg['src']) @applet_arg['window'] = w @applet_arg['fontsize'] = size begin Tk.load_tclscript(src) rescue => e puts "Applet error: #{e.}" end end |
#script_cmd(*args) ⇒ Object
This routine is called for every <SCRIPT> markup
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# File 'sample/tkextlib/tkHTML/ss.rb', line 223 def script_cmd(*args) # puts "ScriptCmd: #{args.inspect}" end |
#sel_load ⇒ Object
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# File 'sample/tkextlib/tkHTML/ss.rb', line 245 def sel_load filetypes = [ ['Html Files', ['.html', '.htm']], ['All Files', '*'] ] f = Tk.getOpenFile(:initialdir=>@last_dir, :filetypes=>filetypes) if f != '' load_file(f) @last_dir = File.dirname(f) end end |