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# Copyright (c) 2015-2016 Ruby-GNOME2 Project Team
# This program is licenced under the same licence as Ruby-GNOME2.
#
=begin
= Cursors
Demonstrates a useful set of available cursors.
=end
class CursorsDemo
def initialize(main_window)
@window = Gtk::Window.new(:toplevel)
@window.screen = main_window.screen
@window.title = "Cursors"
@window.set_default_size(500, 500)
sw = Gtk::ScrolledWindow.new(nil, nil)
sw.set_policy(:never, :automatic)
@window.add(sw)
initialize_box
sw.add(@box)
add_general_section
add_link_and_status_section
add_selection_section
add_drag_and_drop_section
add_resize_and_scrolling_section
add_zoom_section
end
def run
if !@window.visible?
@window.show_all
else
@window.destroy
end
@window
end
private
def initialize_box
@box = Gtk::Box.new(:vertical, 0)
@box.margin_start = 20
@box.margin_end = 20
@box.margin_bottom = 20
end
def add_general_section
section = Section.new(@box, "General")
%w(default none).each do |cursor_name|
section.add_button(cursor_name)
end
end
def add_link_and_status_section
section = Section.new(@box, "Link & Status")
%w(context-menu help
pointer progress wait).each do |cursor_name|
section.add_button(cursor_name)
end
end
def add_selection_section
section = Section.new(@box, "Selection")
%w(cell crosshair text vertical-text).each do |cursor_name|
section.add_button(cursor_name)
end
end
def add_drag_and_drop_section
section = Section.new(@box, "Drag & Drop")
%w(alias copy move no-drop
not-allowed grab grabbing).each do |cursor_name|
section.add_button(cursor_name)
end
end
def add_resize_and_scrolling_section
section = Section.new(@box, "Resize & Scrolling")
%w(all-scroll col-resize row-resize n-resize
e-resize s-resize w-resize ne-resize nw-resize
se-resize sw-resize ew-resize ns-resize nesw-resize
nwse-resize).each do |cursor_name|
section.add_button(cursor_name)
end
end
def add_zoom_section
section = Section.new(@box, "Zoom")
%w(zoom-in zoom-out).each do |cursor_name|
section.add_button(cursor_name)
end
end
end
class Section
def initialize(container, title)
label = Gtk::Label.new(title)
label.xalign = 0
label.margin_top = 10
label.margin_bottom = 10
container.pack_start(label, :expand => false, :fill => true, :padding => 0)
initialize_section
container.pack_start(@section,
:expand => false, :fill => true, :padding => 0)
end
def add_button(css_name)
cursor = Gdk::Cursor.new(css_name)
image = nil
if !cursor
image = Gtk::Image.new(:icon_name => "image-missing", :size => :menu)
else
path = "/cursors/#{css_name.tr('-', '_')}_cursor.png"
image = Gtk::Image.new(:resource => path)
end
image.set_size_request(32, 32)
button = Gtk::Button.new
button.add(image)
button.style_context.add_class("image-button")
button.signal_connect("clicked") do |_widget|
apply_cursor(cursor)
end
button.set_tooltip_text(css_name)
@section.add(button)
end
private
def initialize_section
@section = Gtk::FlowBox.new
@section.set_halign(:start)
@section.set_selection_mode(:none)
@section.set_min_children_per_line(2)
@section.set_min_children_per_line(20)
end
def apply_cursor(cursor)
toplevel = @section.toplevel
window = toplevel.window
window.set_cursor(cursor)
end
end
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