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Generalised UI slider-drawing code

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Maruno17
2024-09-19 23:08:25 +01:00
parent 2816cbcd92
commit 44c4a50a1a
3 changed files with 91 additions and 70 deletions
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60
Data/Scripts/016b_UI redesign/000_UI_base.rb
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@@ -135,6 +135,66 @@ module UI
end
end
SLIDER_COORDS = { # Size of elements in slider graphic
:arrow_size => [24, 28],
:box_heights => [4, 8, 18] # Heights of top, middle and bottom segments of slider box
}
# slider_height includes the heights of the arrows at either end.
def draw_slider(bitmap, slider_x, slider_y, slider_height, visible_top, visible_height, total_height, hide_if_inactive: :false, overlay: :overlay)
coords = self.class::SLIDER_COORDS
bar_y = slider_y + coords[:arrow_size][1]
bar_height = slider_height - (2 * coords[:arrow_size][1])
bar_segment_height = coords[:box_heights].sum # Also minimum height of slider box
show_up_arrow = (visible_top > 0)
show_down_arrow = (visible_top + visible_height < total_height)
return if hide_if_inactive && !show_up_arrow && !show_down_arrow
# Draw up arrow
x_offset = (show_up_arrow) ? coords[:arrow_size][0] : 0
draw_image(bitmap, slider_x, slider_y,
x_offset, 0, *coords[:arrow_size], overlay: overlay)
# Draw down arrow
x_offset = (show_down_arrow) ? coords[:arrow_size][0] : 0
draw_image(bitmap, slider_x, slider_y + slider_height - coords[:arrow_size][1],
x_offset, coords[:arrow_size][1] + bar_segment_height, *coords[:arrow_size], overlay: overlay)
# Draw bar background
iterations = (bar_height / bar_segment_height.to_f).ceil
iterations.times do |i|
segment_y = bar_y + (i * bar_segment_height)
iteration_height = bar_segment_height
iteration_height = bar_height - (i * bar_segment_height) if i == iterations - 1 # Last part
draw_image(bitmap, slider_x, segment_y,
0, coords[:arrow_size][1], coords[:arrow_size][0], iteration_height, overlay: overlay)
end
# Draw slider box
if show_up_arrow || show_down_arrow
box_height = (bar_height * visible_height / total_height).floor
box_height += [(bar_height - box_height) / 2, bar_height / 6].min # Make it bigger than expected
box_height = [box_height.floor, bar_segment_height].max
box_y = bar_y
box_y += ((bar_height - box_height) * visible_top / (total_height - visible_height)).floor
# Draw slider box top
draw_image(bitmap, slider_x, box_y,
coords[:arrow_size][0], coords[:arrow_size][1],
coords[:arrow_size][0], coords[:box_heights][0], overlay: overlay)
# Draw slider box middle
middle_height = box_height - coords[:box_heights][0] - coords[:box_heights][2]
iterations = (middle_height / coords[:box_heights][1].to_f).ceil
iterations.times do |i|
segment_y = box_y + coords[:box_heights][0] + (i * coords[:box_heights][1])
iteration_height = coords[:box_heights][1]
iteration_height = middle_height - (i * coords[:box_heights][1]) if i == iterations - 1 # Last part
draw_image(bitmap, slider_x, segment_y,
coords[:arrow_size][0], coords[:arrow_size][1] + coords[:box_heights][0],
coords[:arrow_size][0], iteration_height, overlay: overlay)
end
# Draw slider box bottom
draw_image(bitmap, slider_x, box_y + box_height - coords[:box_heights][2],
coords[:arrow_size][0], coords[:arrow_size][1] + coords[:box_heights][0] + coords[:box_heights][1],
coords[:arrow_size][0], coords[:box_heights][2], overlay: overlay)
end
end
#---------------------------------------------------------------------------
# Redraw everything on the screen.