image.rb in squib-0.19.0a

- old
+ new
@@ -1,123 +1,123 @@
-module Squib
-
-  # Cache all pngs we've already loaded
-  #
-  # :nodoc:
-  # @api private
-  def cache_load_image(file)
-    @img_cache ||= {}
-    @img_cache[file] ||= open_png file
-  end
-  module_function :cache_load_image
-
-  # Open a PNG file, checking magic bytes if it's a real PNG
-  # Magic bytes taken from:
-  # https://en.wikipedia.org/wiki/List_of_file_signatures
-  # :nodoc:
-  # @api private
-  PNG_MAGIC = [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A]
-  def open_png(file)
-    if PNG_MAGIC == File.read(file, 8).bytes
-      return Cairo::ImageSurface.from_png(file)
-    else
-      raise ArgumentError.new("ERROR: #{file} is not a PNG file")
-    end
-  end
-  module_function :open_png
-
-  class Card
-
-    # :nodoc:
-    # @api private
-    def png(file, box, paint, trans)
-      Squib.logger.debug {"RENDERING PNG: \n  file: #{file}\n  box: #{box}\n  paint: #{paint}\n  trans: #{trans}"}
-      return if file.nil? or file.eql? ''
-      png = Squib.cache_load_image(file)
-      use_cairo do |cc|
-        cc.translate(box.x, box.y)
-        box.width    = png.width.to_f  if box.width  == :native
-        box.height   = png.height.to_f if box.height == :native
-        box.width    = png.width.to_f * box.height.to_f / png.height.to_f if box.width == :scale
-        box.height   = png.height.to_f * box.width.to_f / png.width.to_f  if box.height == :scale
-
-        scale_width  = box.width.to_f / png.width.to_f
-        scale_height = box.height.to_f / png.height.to_f
-        warn_png_scale(file, scale_width, scale_height)
-        cc.scale(scale_width, scale_height)
-
-        cc.rotate(trans.angle)
-        cc.flip(trans.flip_vertical, trans.flip_horizontal, box.width / 2, box.height / 2)
-        cc.translate(-box.x, -box.y)
-
-        trans.crop_width  = png.width.to_f  if trans.crop_width  == :native
-        trans.crop_height = png.height.to_f if trans.crop_height == :native
-        cc.rounded_rectangle(box.x, box.y, trans.crop_width, trans.crop_height, trans.crop_corner_x_radius, trans.crop_corner_y_radius)
-        cc.clip
-        cc.translate(-trans.crop_x, -trans.crop_y)
-
-
-        cc.set_source(png, box.x, box.y)
-        cc.operator = paint.blend unless paint.blend == :none
-        if paint.mask.empty?
-          cc.paint(paint.alpha)
-        else
-          cc.set_source_squibcolor(paint.mask)
-          cc.mask(png, box.x, box.y)
-        end
-      end
-    end
-
-    # :nodoc:
-    # @api private
-    def warn_png_scale(file, scale_width, scale_height)
-      if @deck.conf.warn_png_scale? && (scale_width > 1.0 || scale_height > 1.0)
-        Squib.logger.warn "PNG is being upscaled - antialiasing could result: #{file}"
-      end
-    end
-
-    # :nodoc:
-    # @api private
-    def svg(file, svg_args, box, paint, trans)
-      Squib.logger.debug {"Rendering: #{file}, id: #{id} @#{x},#{y} #{width}x#{height}, alpha: #{alpha}, blend: #{blend}, angle: #{angle}, mask: #{mask}"}
-      Squib.logger.warn 'Both an SVG file and SVG data were specified' unless file.to_s.empty? || svg_args.data.to_s.empty?
-      return if (file.nil? or file.eql? '') and svg_args.data.nil? # nothing specified TODO Move this out to arg validator
-      svg_args.data = File.read(file) if svg_args.data.to_s.empty?
-      begin
-        svg = Rsvg::Handle.new_from_data(svg_args.data)
-      rescue Rsvg::Error::Failed
-        Squib.logger.error "Invalid SVG data. Is '#{file}' a valid svg file?"
-        return
-      end
-      box.width    = svg.width  if box.width == :native
-      box.height   = svg.height if box.height == :native
-      box.width  = svg.width.to_f * box.height.to_f / svg.height.to_f if box.width == :scale
-      box.height = svg.height.to_f * box.width.to_f / svg.width.to_f  if box.height == :scale
-      scale_width  = box.width.to_f / svg.width.to_f
-      scale_height = box.height.to_f / svg.height.to_f
-      use_cairo do |cc|
-        cc.translate(box.x, box.y)
-        cc.flip(trans.flip_vertical, trans.flip_horizontal, box.width / 2, box.height / 2)
-        cc.rotate(trans.angle)
-        cc.scale(scale_width, scale_height)
-
-        trans.crop_width  = box.width  if trans.crop_width  == :native
-        trans.crop_height = box.height if trans.crop_height == :native
-        cc.rounded_rectangle(0, 0, trans.crop_width / scale_width, trans.crop_height / scale_height, trans.crop_corner_x_radius, trans.crop_corner_y_radius)
-        cc.clip
-        cc.translate(-trans.crop_x, -trans.crop_y)
-
-        cc.operator = paint.blend unless paint.blend == :none
-        if paint.mask.to_s.empty?
-          cc.render_rsvg_handle(svg, id: svg_args.id)
-        else
-          tmp = Cairo::ImageSurface.new(box.width / scale_width, box.height / scale_height)
-          tmp_cc = Cairo::Context.new(tmp)
-          tmp_cc.render_rsvg_handle(svg, id: svg_args.id)
-          cc.set_source_squibcolor(paint.mask)
-          cc.mask(tmp, 0, 0)
-        end
-      end
-    end
-
-  end
-end
+module Squib
+
+  # Cache all pngs we've already loaded
+  #
+  # :nodoc:
+  # @api private
+  def cache_load_image(file)
+    @img_cache ||= {}
+    @img_cache[file] ||= open_png file
+  end
+  module_function :cache_load_image
+
+  # Open a PNG file, checking magic bytes if it's a real PNG
+  # Magic bytes taken from:
+  # https://en.wikipedia.org/wiki/List_of_file_signatures
+  # :nodoc:
+  # @api private
+  PNG_MAGIC = [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A]
+  def open_png(file)
+    if PNG_MAGIC == File.read(file, 8).bytes
+      return Cairo::ImageSurface.from_png(file)
+    else
+      raise ArgumentError.new("ERROR: #{file} is not a PNG file")
+    end
+  end
+  module_function :open_png
+
+  class Card
+
+    # :nodoc:
+    # @api private
+    def png(file, box, paint, trans)
+      Squib.logger.debug {"RENDERING PNG: \n  file: #{file}\n  box: #{box}\n  paint: #{paint}\n  trans: #{trans}"}
+      return if file.nil? or file.eql? ''
+      png = Squib.cache_load_image(file)
+      use_cairo do |cc|
+        cc.translate(box.x, box.y)
+        box.width    = png.width.to_f  if box.width  == :native
+        box.height   = png.height.to_f if box.height == :native
+        box.width    = png.width.to_f * box.height.to_f / png.height.to_f if box.width == :scale
+        box.height   = png.height.to_f * box.width.to_f / png.width.to_f  if box.height == :scale
+
+        scale_width  = box.width.to_f / png.width.to_f
+        scale_height = box.height.to_f / png.height.to_f
+        warn_png_scale(file, scale_width, scale_height)
+        cc.scale(scale_width, scale_height)
+
+        cc.rotate(trans.angle)
+        cc.flip(trans.flip_vertical, trans.flip_horizontal, box.width / 2, box.height / 2)
+        cc.translate(-box.x, -box.y)
+
+        trans.crop_width  = png.width.to_f  if trans.crop_width  == :native
+        trans.crop_height = png.height.to_f if trans.crop_height == :native
+        cc.rounded_rectangle(box.x, box.y, trans.crop_width, trans.crop_height, trans.crop_corner_x_radius, trans.crop_corner_y_radius)
+        cc.clip
+        cc.translate(-trans.crop_x, -trans.crop_y)
+
+
+        cc.set_source(png, box.x, box.y)
+        cc.operator = paint.blend unless paint.blend == :none
+        if paint.mask.empty?
+          cc.paint(paint.alpha)
+        else
+          cc.set_source_squibcolor(paint.mask)
+          cc.mask(png, box.x, box.y)
+        end
+      end
+    end
+
+    # :nodoc:
+    # @api private
+    def warn_png_scale(file, scale_width, scale_height)
+      if @deck.conf.warn_png_scale? && (scale_width > 1.0 || scale_height > 1.0)
+        Squib.logger.warn "PNG is being upscaled - antialiasing could result: #{file}"
+      end
+    end
+
+    # :nodoc:
+    # @api private
+    def svg(file, svg_args, box, paint, trans)
+      Squib.logger.debug {"Rendering: #{file}, id: #{id} @#{x},#{y} #{width}x#{height}, alpha: #{alpha}, blend: #{blend}, angle: #{angle}, mask: #{mask}"}
+      Squib.logger.warn 'Both an SVG file and SVG data were specified' unless file.to_s.empty? || svg_args.data.to_s.empty?
+      return if (file.nil? or file.eql? '') and svg_args.data.nil? # nothing specified TODO Move this out to arg validator
+      svg_args.data = File.read(file) if svg_args.data.to_s.empty?
+      begin
+        svg = Rsvg::Handle.new_from_data(svg_args.data)
+      rescue Rsvg::Error::Failed
+        Squib.logger.error "Invalid SVG data. Is '#{file}' a valid svg file?"
+        return
+      end
+      box.width    = svg.width  if box.width == :native
+      box.height   = svg.height if box.height == :native
+      box.width  = svg.width.to_f * box.height.to_f / svg.height.to_f if box.width == :scale
+      box.height = svg.height.to_f * box.width.to_f / svg.width.to_f  if box.height == :scale
+      scale_width  = box.width.to_f / svg.width.to_f
+      scale_height = box.height.to_f / svg.height.to_f
+      use_cairo do |cc|
+        cc.translate(box.x, box.y)
+        cc.flip(trans.flip_vertical, trans.flip_horizontal, box.width / 2, box.height / 2)
+        cc.rotate(trans.angle)
+        cc.scale(scale_width, scale_height)
+
+        trans.crop_width  = box.width  if trans.crop_width  == :native
+        trans.crop_height = box.height if trans.crop_height == :native
+        cc.rounded_rectangle(0, 0, trans.crop_width / scale_width, trans.crop_height / scale_height, trans.crop_corner_x_radius, trans.crop_corner_y_radius)
+        cc.clip
+        cc.translate(-trans.crop_x, -trans.crop_y)
+
+        cc.operator = paint.blend unless paint.blend == :none
+        if paint.mask.to_s.empty?
+          cc.render_rsvg_handle(svg, id: svg_args.id)
+        else
+          tmp = Cairo::ImageSurface.new(box.width / scale_width, box.height / scale_height)
+          tmp_cc = Cairo::Context.new(tmp)
+          tmp_cc.render_rsvg_handle(svg, id: svg_args.id)
+          cc.set_source_squibcolor(paint.mask)
+          cc.mask(tmp, 0, 0)
+        end
+      end
+    end
+
+  end
+end