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# draw.rb -- draw.scm --> draw.rb
# Translator: Michael Scholz <mi-scholz@users.sourceforge.net>
# Created: 2005/04/05 00:17:04
# Changed: 2018/04/15 22:49:29
# examples of extensions to Snd's graphics
#
# module Draw
# display_colored_samples(color, beg, dur, snd = false, chn = false)
# display_samples_in_color(snd, chn)
# color_samples(color, beg = 0, dur = false, snd = Snd.snd, chn = Snd.chn)
# uncolor_samples(snd = Snd.snd, chn = Snd.chn)
# display_previous_edits(snd, chn)
# overlay_sounds(*rest)
# samples_via_colormap(snd, chn)
# click_for_listener_help(pos)
require "extensions"
module Draw
add_help(:display_colored_samples,
"display_colored_samples(color, beg, dur, snd=false, chn=false) \
Displays samples from beg for dur in color \
whenever they're in the current view.")
def display_colored_samples(color, beg, dur, snd = false, chn = false)
unless array?(color) and number?(beg) and number?(dur)
return
end
left = left_sample(snd, chn)
right = right_sample(snd, chn)
len = beg + dur
old_color = foreground_color(snd, chn)
if left < len and right > beg
cr = channel_widgets(snd, chn)[17]
if vct?(data = make_graph_data(snd, chn))
samps = [right, len].min - [left, beg].max
offset = [0, beg - left].max
new_data = data.subseq(offset, offset + samps)
set_foreground_color(color, snd, chn)
graph_data(new_data,
snd, chn,
Copy_context,
[beg, left].max,
[len, right].min, Graph_lines, cr)
set_foreground_color(old_color, snd, chn)
else
low_data, high_data = data[0, 2]
size = low_data.length
samps = right - left
left_offset = [0, beg - left].max
left_bin = ((size.to_f * left_offset) / samps).floor
right_offset = [len, right].min - left
right_bin = ((size.to_f * right_offset) / samps).floor
new_low_data = low_data.subseq(left_bin, right_bin)
new_high_data = high_data.subseq(left_bin, right_bin)
set_foreground_color(color, snd, chn)
graph_data([new_low_data, new_high_data],
snd, chn, Copy_context, left_bin, right_bin, Graph_lines, cr)
set_foreground_color(old_color, snd, chn)
end
end
end
def display_samples_in_color(snd, chn)
col, beg, dur = channel_property(:colored_samples, snd, chn)
display_colored_samples(col, beg, dur, snd, chn)
end
add_help(:color_samples,
"color_samples(color, beg=0, dur=false, snd=false, chn=false) \
Causes samples from BEG to BEG+DUR to be displayed in COLOR.")
def color_samples(color, beg = 0, dur = false, snd = Snd.snd, chn = Snd.chn)
unless $after_graph_hook.member?("display-samples-in-color")
$after_graph_hook.add_hook!("display-samples-in-color") do |s, c|
display_samples_in_color(s, c)
end
end
unless dur then dur = framples(snd, chn) - beg end
set_channel_property(:colored_samples, [color, beg, dur], snd, chn)
update_time_graph(snd, chn)
end
add_help(:uncolor_samples,
"uncolor_samples(snd=false, chn=false) \
Cancels sample coloring in the given channel.")
def uncolor_samples(snd = Snd.snd, chn = Snd.chn)
set_channel_property(:colored_samples, [], snd, chn)
update_time_graph(snd, chn)
end
add_help(:display_previous_edits,
"display_previous_edits(snd, chn) \
Displays all edits of the current sound, \
with older versions gradually fading away.")
def display_previous_edits(snd, chn)
edits = edit_position(snd, chn)
if edits > 0
old_color = foreground_color(snd, chn)
clist = color2list(old_color)
r = clist[0]
g = clist[1]
b = clist[2]
rinc = (1.0 - r) / (edits + 1)
ginc = (1.0 - g) / (edits + 1)
binc = (1.0 - b) / (edits + 1)
cr = channel_widgets(snd, chn)[17]
re = 1.0 - rinc
ge = 1.0 - ginc
be = 1.0 - binc
0.upto(edits) do |pos|
data = make_graph_data(snd, chn, pos)
set_foreground_color(make_color(re, ge, be), snd, chn)
graph_data(data,
snd, chn, Copy_context,
false, false, time_graph_style(snd, chn), cr)
re -= rinc
ge -= ginc
be -= binc
end
set_foreground_color(old_color, snd, chn)
end
end
add_help(:overlay_sounds,
"overlay_sounds(*rest) \
Overlays onto its first argument all \
subsequent arguments: overlay_sounds(1, 0, 3)")
def overlay_sounds(*rest)
base = rest.shift
if integer?(base)
base = integer2sound(base)
end
$after_graph_hook.add_hook!(get_func_name) do |snd, chn|
if snd == base
cr = channel_widgets(snd, chn)[17]
rest.each do |s|
graph_data(make_graph_data(s, chn),
base, chn, Copy_context, false, false, Graph_dots, cr)
end
end
end
end
add_help(:samples_via_colormap,
"samples_via_colormap(snd, chn) \
Displays time domain graph using current \
colormap (just an example of colormap_ref).")
def samples_via_colormap(snd, chn)
left = left_sample(snd, chn)
old_color = foreground_color(snd, chn)
if data = make_graph_data(snd, chn)
cr = channel_widgets(snd, chn)[17]
if vct?(data)
data = [data]
end
data.each do |cur_data|
x0 = x2position(left / srate(snd))
y0 = y2position(cur_data[0])
colors = make_array(colormap_size)
j = 1
(left + 1).upto(left + cur_data.length - 1) do |i|
x1 = x2position(i / srate(snd))
y1 = y2position(cur_data[j])
x = cur_data[j].abs
ref = (colormap_size * x).floor
unless colors[ref]
colors[ref] = make_color(*colormap_ref(colormap, x))
end
set_foreground_color(colors[ref], snd, chn)
draw_line(x0, y0, x1, y1, snd, chn, Time_graph, cr)
x0, y0 = x1, y1
j += 1
end
end
set_foreground_color(old_color, snd, chn)
end
end
# click-for-listener-help
$last_click_time = 0.0
def click_for_listener_help(pos)
time = Time.now.to_f
if time - $last_click_time < 0.2
$last_click_time = 0.0
text = widget_text(main_widgets[4])
if string?(text)
subject = text.slice(text.rindex(/\b/m, pos)...text.index(/\b/m, pos))
if string?(subject)
help = snd_help(subject, false)
if string?(help)
help_dialog(subject, help)
end
end
end
else
$last_click_time = time
end
end
# $listener_click_hook.add_hook!("listener-help",
# &method(:click_for_listener_help).to_proc)
end
include Draw
# draw.rb ends here
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