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Versions: 16
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Stored size: 1.94 KB
Contents
# frozen_string_literal: true
module Gruff
# @private
class Renderer::Text
using Magick::GruffAnnotate
def initialize(renderer, text, font:, rotation: nil)
@renderer = renderer
@text = text.to_s
@font = font
@rotation = rotation
end
attr_reader :width, :height, :x, :y, :gravity
def add_to_render_queue(width, height, x, y, gravity = Magick::NorthGravity)
@width = width
@height = height
@x = x
@y = y
@gravity = gravity
@renderer.text_renderers << self
end
def render(width, height, x, y, gravity = Magick::NorthGravity)
@renderer.draw.push
@renderer.draw.rotation = @rotation if @rotation
@renderer.draw.fill = @font.color
@renderer.draw.stroke = 'transparent'
@renderer.draw.font = @font.file_path
@renderer.draw.font_weight = @font.weight
@renderer.draw.pointsize = @font.size * @renderer.scale
@renderer.draw.gravity = gravity
@renderer.draw.annotate_scaled(@renderer.image,
width, height,
x, y,
@text, @renderer.scale)
@renderer.draw.rotation = -@rotation if @rotation
@renderer.draw.pop
end
def metrics
@renderer.draw.push
@renderer.draw.font = @font.file_path
@renderer.draw.font_weight = @font.weight
@renderer.draw.pointsize = @font.size
# The old ImageMagick causes SEGV with string which has '%' + alphabet (eg. '%S').
# This format is used to embed value into a string using image properties.
# However, gruff use plain image as canvas which does not have any property.
# So, in here, it just escape % in order to avoid SEGV.
text = @text.to_s.gsub(/(%+)/) { ('%' * Regexp.last_match(1).size * 2).to_s }
metrics = @renderer.draw.get_type_metrics(@renderer.image, text)
@renderer.draw.pop
metrics
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems