Class: Magick::Draw
- Inherits:
-
Object
- Object
- Magick::Draw
- Defined in:
- lib/RMagick.rb,
lib/rmagick4j/draw.rb
Constant Summary collapse
- ALIGN_TYPE_NAMES =
Thse hashes are used to map Magick constant values to the strings used in the primitives.
{ LeftAlign.to_i => 'left', RightAlign.to_i => 'right', CenterAlign.to_i => 'center' }.freeze
- ANCHOR_TYPE_NAMES =
{ StartAnchor.to_i => 'start', MiddleAnchor.to_i => 'middle', EndAnchor.to_i => 'end' }.freeze
- DECORATION_TYPE_NAMES =
{ NoDecoration.to_i => 'none', UnderlineDecoration.to_i => 'underline', OverlineDecoration.to_i => 'overline', LineThroughDecoration.to_i => 'line-through' }.freeze
- FONT_WEIGHT_NAMES =
{ AnyWeight.to_i => 'all', NormalWeight.to_i => 'normal', BoldWeight.to_i => 'bold', BolderWeight.to_i => 'bolder', LighterWeight.to_i => 'lighter', }.freeze
- GRAVITY_NAMES =
{ NorthWestGravity.to_i => 'northwest', NorthGravity.to_i => 'north', NorthEastGravity.to_i => 'northeast', WestGravity.to_i => 'west', CenterGravity.to_i => 'center', EastGravity.to_i => 'east', SouthWestGravity.to_i => 'southwest', SouthGravity.to_i => 'south', SouthEastGravity.to_i => 'southeast' }.freeze
- PAINT_METHOD_NAMES =
{ PointMethod.to_i => 'point', ReplaceMethod.to_i => 'replace', FloodfillMethod.to_i => 'floodfill', FillToBorderMethod.to_i => 'filltoborder', ResetMethod.to_i => 'reset' }.freeze
- STRETCH_TYPE_NAMES =
{ NormalStretch.to_i => 'normal', UltraCondensedStretch.to_i => 'ultra-condensed', ExtraCondensedStretch.to_i => 'extra-condensed', CondensedStretch.to_i => 'condensed', SemiCondensedStretch.to_i => 'semi-condensed', SemiExpandedStretch.to_i => 'semi-expanded', ExpandedStretch.to_i => 'expanded', ExtraExpandedStretch.to_i => 'extra-expanded', UltraExpandedStretch.to_i => 'ultra-expanded', AnyStretch.to_i => 'all' }.freeze
- STYLE_TYPE_NAMES =
{ NormalStyle.to_i => 'normal', ItalicStyle.to_i => 'italic', ObliqueStyle.to_i => 'oblique', AnyStyle.to_i => 'all' }.freeze
Instance Method Summary collapse
-
#affine(sx, rx, ry, sy, tx, ty) ⇒ Object
Apply coordinate transformations to support scaling (s), rotation ®, and translation (t).
- #annotate(img, width, height, x, y, text, &add) ⇒ Object
-
#arc(startX, startY, endX, endY, startDegrees, endDegrees) ⇒ Object
Draw an arc.
-
#bezier(*points) ⇒ Object
Draw a bezier curve.
-
#circle(originX, originY, perimX, perimY) ⇒ Object
Draw a circle.
-
#clip_path(name) ⇒ Object
Invoke a clip-path defined by def_clip_path.
-
#clip_rule(rule) ⇒ Object
Define the clipping rule.
-
#clip_units(unit) ⇒ Object
Define the clip units.
- #clone ⇒ Object
-
#color(x, y, method) ⇒ Object
Set color in image according to specified colorization rule.
-
#decorate(decoration) ⇒ Object
Specify EITHER the text decoration (none, underline, overline, line-through) OR the text solid background color (any color name or spec).
-
#define_clip_path(name) ⇒ Object
Define a clip-path.
- #draw(image) ⇒ Object
-
#ellipse(originX, originY, width, height, arcStart, arcEnd) ⇒ Object
Draw an ellipse.
-
#encoding(encoding) ⇒ Object
Let anything through, but the only defined argument is “UTF-8”.
-
#fill(colorspec) ⇒ Object
(also: #fill_color, #fill_pattern)
Specify object fill, a color name or pattern name.
- #fill=(fill) ⇒ Object
-
#fill_opacity(opacity) ⇒ Object
Specify fill opacity (use “xx%” to indicate percentage).
- #fill_rule(rule) ⇒ Object
-
#font(name) ⇒ Object
Specify text drawing font.
- #font=(font) ⇒ Object
- #font_family(name) ⇒ Object
- #font_family=(font_family) ⇒ Object
- #font_stretch(stretch) ⇒ Object
- #font_style(style) ⇒ Object
-
#font_weight(weight) ⇒ Object
The font weight argument can be either a font weight constant or [100,200,…,900].
- #font_weight=(font_weight) ⇒ Object
- #get_multiline_type_metrics(*args) ⇒ Object
- #get_type_metrics(*args) ⇒ Object
-
#gravity(grav) ⇒ Object
Specify the text positioning gravity, one of: NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast.
- #gravity=(gravity) ⇒ Object
-
#initialize ⇒ Draw
constructor
A new instance of Draw.
- #inspect ⇒ Object
-
#interword_spacing(space) ⇒ Object
IM 6.4.8-3 and later.
-
#kerning(space) ⇒ Object
IM 6.4.8-3 and later.
-
#line(startX, startY, endX, endY) ⇒ Object
Draw a line.
-
#matte(x, y, method) ⇒ Object
Set matte (make transparent) in image according to the specified colorization rule.
-
#opacity(opacity) ⇒ Object
Specify drawing fill and stroke opacities.
-
#path(cmds) ⇒ Object
Draw using SVG-compatible path drawing commands.
-
#pattern(name, x, y, width, height) ⇒ Object
Define a pattern.
-
#point(x, y) ⇒ Object
Set point to fill color.
-
#pointsize(points) ⇒ Object
(also: #font_size)
Specify the font size in points.
- #pointsize=(pointsize) ⇒ Object
-
#polygon(*points) ⇒ Object
Draw a polygon.
-
#polyline(*points) ⇒ Object
Draw a polyline.
-
#pop(*what) ⇒ Object
Return to the previously-saved set of whatever pop(‘graphic-context’) (the default if no arguments) pop(‘defs’) pop(‘gradient’) pop(‘pattern’).
- #primitive(primitive) ⇒ Object
-
#push(*what) ⇒ Object
Push the current set of drawing options.
-
#rectangle(upper_left_x, upper_left_y, lower_right_x, lower_right_y) ⇒ Object
Draw a rectangle.
-
#rotate(angle) ⇒ Object
Specify coordinate space rotation.
- #rotation=(rotation) ⇒ Object
-
#roundrectangle(center_x, center_y, width, height, corner_width, corner_height) ⇒ Object
Draw a rectangle with rounded corners.
-
#scale(x, y) ⇒ Object
Specify scaling to be applied to coordinate space on subsequent drawing commands.
- #skewx(angle) ⇒ Object
- #skewy(angle) ⇒ Object
-
#stroke(colorspec) ⇒ Object
(also: #stroke_color, #stroke_pattern)
Specify the object stroke, a color name or pattern name.
- #stroke=(stroke) ⇒ Object
-
#stroke_antialias(bool) ⇒ Object
Specify if stroke should be antialiased or not.
-
#stroke_dasharray(*list) ⇒ Object
Specify a stroke dash pattern.
-
#stroke_dashoffset(value = 0) ⇒ Object
Specify the initial offset in the dash pattern.
- #stroke_linecap(value) ⇒ Object
- #stroke_linejoin(value) ⇒ Object
- #stroke_miterlimit(value) ⇒ Object
-
#stroke_opacity(value) ⇒ Object
Specify opacity of stroke drawing color (use “xx%” to indicate percentage).
-
#stroke_width(pixels) ⇒ Object
Specify stroke (outline) width in pixels.
-
#text(x, y, text) ⇒ Object
Draw text at position x,y.
-
#text_align(alignment) ⇒ Object
Specify text alignment relative to a given point.
-
#text_anchor(anchor) ⇒ Object
SVG-compatible version of text_align.
-
#text_antialias(boolean) ⇒ Object
Specify if rendered text is to be antialiased.
-
#text_undercolor(color) ⇒ Object
Specify color underneath text.
-
#translate(x, y) ⇒ Object
Specify center of coordinate space to use for subsequent drawing commands.
Constructor Details
#initialize ⇒ Draw
Returns a new instance of Draw.
62 63 64 65 66 67 |
# File 'lib/rmagick4j/draw.rb', line 62 def initialize # Docs say that you can initialize with a block, but it doesn't really work because it inits an ImageInfo not a DrawInfo. # instance_eval &add if add @draw = Magick4J::DrawInfo.new @primitives = '' end |
Instance Method Details
#affine(sx, rx, ry, sy, tx, ty) ⇒ Object
Apply coordinate transformations to support scaling (s), rotation ®, and translation (t). Angles are specified in radians.
211 212 213 |
# File 'lib/RMagick.rb', line 211 def affine(sx, rx, ry, sy, tx, ty) primitive "affine " + sprintf("%g,%g,%g,%g,%g,%g", sx, rx, ry, sy, tx, ty) end |
#annotate(img, width, height, x, y, text, &add) ⇒ Object
5 6 7 8 9 10 |
# File 'lib/rmagick4j/draw.rb', line 5 def annotate(img, width, height, x, y, text, &add) instance_eval &add if add text = parse_string(text) @draw.annotate(img._image, width, height, x, y, text) self end |
#arc(startX, startY, endX, endY, startDegrees, endDegrees) ⇒ Object
Draw an arc.
216 217 218 219 |
# File 'lib/RMagick.rb', line 216 def arc(startX, startY, endX, endY, startDegrees, endDegrees) primitive "arc " + sprintf("%g,%g %g,%g %g,%g", startX, startY, endX, endY, startDegrees, endDegrees) end |
#bezier(*points) ⇒ Object
Draw a bezier curve.
222 223 224 225 226 227 228 229 |
# File 'lib/RMagick.rb', line 222 def bezier(*points) if points.length == 0 Kernel.raise ArgumentError, "no points specified" elsif points.length % 2 != 0 Kernel.raise ArgumentError, "odd number of arguments specified" end primitive "bezier " + points.join(',') end |
#circle(originX, originY, perimX, perimY) ⇒ Object
Draw a circle
232 233 234 |
# File 'lib/RMagick.rb', line 232 def circle(originX, originY, perimX, perimY) primitive "circle " + sprintf("%g,%g %g,%g", originX, originY, perimX, perimY) end |
#clip_path(name) ⇒ Object
Invoke a clip-path defined by def_clip_path.
237 238 239 |
# File 'lib/RMagick.rb', line 237 def clip_path(name) primitive "clip-path #{name}" end |
#clip_rule(rule) ⇒ Object
Define the clipping rule.
242 243 244 245 246 247 |
# File 'lib/RMagick.rb', line 242 def clip_rule(rule) if ( not ["evenodd", "nonzero"].include?(rule.downcase) ) Kernel.raise ArgumentError, "Unknown clipping rule #{rule}" end primitive "clip-rule #{rule}" end |
#clip_units(unit) ⇒ Object
Define the clip units
250 251 252 253 254 255 |
# File 'lib/RMagick.rb', line 250 def clip_units(unit) if ( not ["userspace", "userspaceonuse", "objectboundingbox"].include?(unit.downcase) ) Kernel.raise ArgumentError, "Unknown clip unit #{unit}" end primitive "clip-units #{unit}" end |
#clone ⇒ Object
12 13 14 15 16 17 18 |
# File 'lib/rmagick4j/draw.rb', line 12 def clone b = Draw.new b.primitives = @primitives.clone b._draw = @draw.clone b.freeze if self.frozen? b end |
#color(x, y, method) ⇒ Object
Set color in image according to specified colorization rule. Rule is one of point, replace, floodfill, filltoborder,reset
259 260 261 262 263 264 |
# File 'lib/RMagick.rb', line 259 def color(x, y, method) if ( not PAINT_METHOD_NAMES.has_key?(method.to_i) ) Kernel.raise ArgumentError, "Unknown PaintMethod: #{method}" end primitive "color #{x},#{y},#{PAINT_METHOD_NAMES[method.to_i]}" end |
#decorate(decoration) ⇒ Object
Specify EITHER the text decoration (none, underline, overline, line-through) OR the text solid background color (any color name or spec)
268 269 270 271 272 273 274 |
# File 'lib/RMagick.rb', line 268 def decorate(decoration) if ( DECORATION_TYPE_NAMES.has_key?(decoration.to_i) ) primitive "decorate #{DECORATION_TYPE_NAMES[decoration.to_i]}" else primitive "decorate #{enquote(decoration)}" end end |
#define_clip_path(name) ⇒ Object
Define a clip-path. A clip-path is a sequence of primitives bracketed by the “push clip-path <name>” and “pop clip-path” primitives. Upon advice from the IM guys, we also bracket the clip-path primitives with “push(pop) defs” and “push (pop) graphic-context”.
281 282 283 284 285 286 287 288 289 290 291 292 |
# File 'lib/RMagick.rb', line 281 def define_clip_path(name) begin push('defs') push('clip-path', name) push('graphic-context') yield ensure pop('graphic-context') pop('clip-path') pop('defs') end end |
#draw(image) ⇒ Object
20 21 22 23 |
# File 'lib/rmagick4j/draw.rb', line 20 def draw(image) @draw.clone.draw(image._image, Magick4J.CommandParser.parse(@primitives)) self end |
#ellipse(originX, originY, width, height, arcStart, arcEnd) ⇒ Object
Draw an ellipse
295 296 297 298 |
# File 'lib/RMagick.rb', line 295 def ellipse(originX, originY, width, height, arcStart, arcEnd) primitive "ellipse " + sprintf("%g,%g %g,%g %g,%g", originX, originY, width, height, arcStart, arcEnd) end |
#encoding(encoding) ⇒ Object
Let anything through, but the only defined argument is “UTF-8”. All others are apparently ignored.
302 303 304 |
# File 'lib/RMagick.rb', line 302 def encoding(encoding) primitive "encoding #{encoding}" end |
#fill(colorspec) ⇒ Object Also known as: fill_color, fill_pattern
Specify object fill, a color name or pattern name
307 308 309 |
# File 'lib/RMagick.rb', line 307 def fill(colorspec) primitive "fill #{enquote(colorspec)}" end |
#fill=(fill) ⇒ Object
25 26 27 28 |
# File 'lib/rmagick4j/draw.rb', line 25 def fill= fill @draw.fill = Magick4J.ColorDatabase.query_default(fill) self end |
#fill_opacity(opacity) ⇒ Object
Specify fill opacity (use “xx%” to indicate percentage)
314 315 316 |
# File 'lib/RMagick.rb', line 314 def fill_opacity(opacity) primitive "fill-opacity #{opacity}" end |
#fill_rule(rule) ⇒ Object
318 319 320 321 322 323 |
# File 'lib/RMagick.rb', line 318 def fill_rule(rule) if ( not ["evenodd", "nonzero"].include?(rule.downcase) ) Kernel.raise ArgumentError, "Unknown fill rule #{rule}" end primitive "fill-rule #{rule}" end |
#font(name) ⇒ Object
Specify text drawing font
326 327 328 |
# File 'lib/RMagick.rb', line 326 def font(name) primitive "font #{name}" end |
#font=(font) ⇒ Object
54 55 56 |
# File 'lib/rmagick4j/draw.rb', line 54 def font= font # TODO end |
#font_family(name) ⇒ Object
330 331 332 |
# File 'lib/RMagick.rb', line 330 def font_family(name) primitive "font-family \'#{name}\'" end |
#font_family=(font_family) ⇒ Object
30 31 32 33 |
# File 'lib/rmagick4j/draw.rb', line 30 def font_family= font_family @draw.font_family = font_family self end |
#font_stretch(stretch) ⇒ Object
334 335 336 337 338 339 |
# File 'lib/RMagick.rb', line 334 def font_stretch(stretch) if ( not STRETCH_TYPE_NAMES.has_key?(stretch.to_i) ) Kernel.raise ArgumentError, "Unknown stretch type" end primitive "font-stretch #{STRETCH_TYPE_NAMES[stretch.to_i]}" end |
#font_style(style) ⇒ Object
341 342 343 344 345 346 |
# File 'lib/RMagick.rb', line 341 def font_style(style) if ( not STYLE_TYPE_NAMES.has_key?(style.to_i) ) Kernel.raise ArgumentError, "Unknown style type" end primitive "font-style #{STYLE_TYPE_NAMES[style.to_i]}" end |
#font_weight(weight) ⇒ Object
The font weight argument can be either a font weight constant or [100,200,…,900]
350 351 352 353 354 355 356 |
# File 'lib/RMagick.rb', line 350 def font_weight(weight) if ( FONT_WEIGHT_NAMES.has_key?(weight.to_i) ) primitive "font-weight #{FONT_WEIGHT_NAMES[weight.to_i]}" else primitive "font-weight #{weight}" end end |
#font_weight=(font_weight) ⇒ Object
35 36 37 38 |
# File 'lib/rmagick4j/draw.rb', line 35 def font_weight= font_weight font_weight = {BoldWeight => 700, NormalWeight => 400}[font_weight] @draw.font_weight = font_weight end |
#get_multiline_type_metrics(*args) ⇒ Object
40 41 42 43 44 45 |
# File 'lib/rmagick4j/draw.rb', line 40 def get_multiline_type_metrics(*args) raise ArgumentError.new('wrong number of arguments (#{args.length})') if not (1..2) === args.length string = parse_string(args.last) image = args.first._image if args.length == 2 type_metrics_from_java(@draw.getMultilineTypeMetrics(string, image)) end |
#get_type_metrics(*args) ⇒ Object
47 48 49 50 51 52 |
# File 'lib/rmagick4j/draw.rb', line 47 def get_type_metrics(*args) raise ArgumentError.new('wrong number of arguments (#{args.length})') if not (1..2) === args.length string = parse_string(args.last) image = args.first._image if args.length == 2 type_metrics_from_java(@draw.getTypeMetrics(string, image)) end |
#gravity(grav) ⇒ Object
Specify the text positioning gravity, one of: NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast
360 361 362 363 364 365 |
# File 'lib/RMagick.rb', line 360 def gravity(grav) if ( not GRAVITY_NAMES.has_key?(grav.to_i) ) Kernel.raise ArgumentError, "Unknown text positioning gravity" end primitive "gravity #{GRAVITY_NAMES[grav.to_i]}" end |
#gravity=(gravity) ⇒ Object
58 59 60 |
# File 'lib/rmagick4j/draw.rb', line 58 def gravity= gravity @draw.setGravity(gravity._val) end |
#inspect ⇒ Object
69 70 71 72 73 74 75 |
# File 'lib/rmagick4j/draw.rb', line 69 def inspect if @primitives == '' '(no primitives defined)' else @primitives end end |
#interword_spacing(space) ⇒ Object
IM 6.4.8-3 and later
368 369 370 371 372 373 374 375 376 377 |
# File 'lib/RMagick.rb', line 368 def interword_spacing(space) begin Float(space) rescue ArgumentError Kernel.raise ArgumentError, "invalid value for interword_spacing" rescue TypeError Kernel.raise TypeError, "can't convert #{space.class} into Float" end primitive "interword-spacing #{space}" end |
#kerning(space) ⇒ Object
IM 6.4.8-3 and later
380 381 382 383 384 385 386 387 388 389 |
# File 'lib/RMagick.rb', line 380 def kerning(space) begin Float(space) rescue ArgumentError Kernel.raise ArgumentError, "invalid value for kerning" rescue TypeError Kernel.raise TypeError, "can't convert #{space.class} into Float" end primitive "kerning #{space}" end |
#line(startX, startY, endX, endY) ⇒ Object
Draw a line
392 393 394 |
# File 'lib/RMagick.rb', line 392 def line(startX, startY, endX, endY) primitive "line " + sprintf("%g,%g %g,%g", startX, startY, endX, endY) end |
#matte(x, y, method) ⇒ Object
Set matte (make transparent) in image according to the specified colorization rule
398 399 400 401 402 403 |
# File 'lib/RMagick.rb', line 398 def matte(x, y, method) if ( not PAINT_METHOD_NAMES.has_key?(method.to_i) ) Kernel.raise ArgumentError, "Unknown paint method" end primitive "matte #{x},#{y} #{PAINT_METHOD_NAMES[method.to_i]}" end |
#opacity(opacity) ⇒ Object
Specify drawing fill and stroke opacities. If the value is a string ending with a %, the number will be multiplied by 0.01.
407 408 409 410 411 412 413 414 |
# File 'lib/RMagick.rb', line 407 def opacity(opacity) if (Numeric === opacity) if (opacity < 0 || opacity > 1.0) Kernel.raise ArgumentError, "opacity must be >= 0 and <= 1.0" end end primitive "opacity #{opacity}" end |
#path(cmds) ⇒ Object
Draw using SVG-compatible path drawing commands. Note that the primitive requires that the commands be surrounded by quotes or apostrophes. Here we simply use apostrophes.
419 420 421 |
# File 'lib/RMagick.rb', line 419 def path(cmds) primitive "path '" + cmds + "'" end |
#pattern(name, x, y, width, height) ⇒ Object
Define a pattern. In the block, call primitive methods to draw the pattern. Reference the pattern by using its name as the argument to the ‘fill’ or ‘stroke’ methods
426 427 428 429 430 431 432 433 434 435 436 437 |
# File 'lib/RMagick.rb', line 426 def pattern(name, x, y, width, height) begin push('defs') push("pattern #{name} #{x} #{y} #{width} #{height}") push('graphic-context') yield ensure pop('graphic-context') pop('pattern') pop('defs') end end |
#point(x, y) ⇒ Object
Set point to fill color.
440 441 442 |
# File 'lib/RMagick.rb', line 440 def point(x, y) primitive "point #{x},#{y}" end |
#pointsize(points) ⇒ Object Also known as: font_size
Specify the font size in points. Yes, the primitive is “font-size” but in other places this value is called the “pointsize”. Give it both names.
446 447 448 |
# File 'lib/RMagick.rb', line 446 def pointsize(points) primitive "font-size #{points}" end |
#pointsize=(pointsize) ⇒ Object
77 78 79 |
# File 'lib/rmagick4j/draw.rb', line 77 def pointsize= pointsize @draw.setPointSize(pointsize) end |
#polygon(*points) ⇒ Object
Draw a polygon
452 453 454 455 456 457 458 459 |
# File 'lib/RMagick.rb', line 452 def polygon(*points) if points.length == 0 Kernel.raise ArgumentError, "no points specified" elsif points.length % 2 != 0 Kernel.raise ArgumentError, "odd number of points specified" end primitive "polygon " + points.join(',') end |
#polyline(*points) ⇒ Object
Draw a polyline
462 463 464 465 466 467 468 469 |
# File 'lib/RMagick.rb', line 462 def polyline(*points) if points.length == 0 Kernel.raise ArgumentError, "no points specified" elsif points.length % 2 != 0 Kernel.raise ArgumentError, "odd number of points specified" end primitive "polyline " + points.join(',') end |
#pop(*what) ⇒ Object
Return to the previously-saved set of whatever pop(‘graphic-context’) (the default if no arguments) pop(‘defs’) pop(‘gradient’) pop(‘pattern’)
477 478 479 480 481 482 483 484 |
# File 'lib/RMagick.rb', line 477 def pop(*what) if what.length == 0 primitive "pop graphic-context" else # to_s allows a Symbol to be used instead of a String primitive "pop " + what.map {|w| w.to_s}.join(' ') end end |
#primitive(primitive) ⇒ Object
81 82 83 84 85 86 |
# File 'lib/rmagick4j/draw.rb', line 81 def primitive primitive # TODO Concat in a string like they do, then use helper to parse later @primitives << "\n" unless @primitives.empty? @primitives << primitive.gsub(/[\r|\n]/, '') self end |
#push(*what) ⇒ Object
Push the current set of drawing options. Also you can use push(‘graphic-context’) (the default if no arguments) push(‘defs’) push(‘gradient’) push(‘pattern’)
491 492 493 494 495 496 497 498 |
# File 'lib/RMagick.rb', line 491 def push(*what) if what.length == 0 primitive "push graphic-context" else # to_s allows a Symbol to be used instead of a String primitive "push " + what.map {|w| w.to_s}.join(' ') end end |
#rectangle(upper_left_x, upper_left_y, lower_right_x, lower_right_y) ⇒ Object
Draw a rectangle
501 502 503 504 |
# File 'lib/RMagick.rb', line 501 def rectangle(upper_left_x, upper_left_y, lower_right_x, lower_right_y) primitive "rectangle " + sprintf("%g,%g %g,%g", upper_left_x, upper_left_y, lower_right_x, lower_right_y) end |
#rotate(angle) ⇒ Object
Specify coordinate space rotation. “angle” is measured in degrees
507 508 509 |
# File 'lib/RMagick.rb', line 507 def rotate(angle) primitive "rotate #{angle}" end |
#rotation=(rotation) ⇒ Object
88 89 90 91 |
# File 'lib/rmagick4j/draw.rb', line 88 def rotation= rotation @draw.rotate(rotation) self end |
#roundrectangle(center_x, center_y, width, height, corner_width, corner_height) ⇒ Object
Draw a rectangle with rounded corners
512 513 514 515 |
# File 'lib/RMagick.rb', line 512 def roundrectangle(center_x, center_y, width, height, corner_width, corner_height) primitive "roundrectangle " + sprintf("%g,%g,%g,%g,%g,%g", center_x, center_y, width, height, corner_width, corner_height) end |
#scale(x, y) ⇒ Object
Specify scaling to be applied to coordinate space on subsequent drawing commands.
518 519 520 |
# File 'lib/RMagick.rb', line 518 def scale(x, y) primitive "scale #{x},#{y}" end |
#skewx(angle) ⇒ Object
522 523 524 |
# File 'lib/RMagick.rb', line 522 def skewx(angle) primitive "skewX #{angle}" end |
#skewy(angle) ⇒ Object
526 527 528 |
# File 'lib/RMagick.rb', line 526 def skewy(angle) primitive "skewY #{angle}" end |
#stroke(colorspec) ⇒ Object Also known as: stroke_color, stroke_pattern
Specify the object stroke, a color name or pattern name.
531 532 533 |
# File 'lib/RMagick.rb', line 531 def stroke(colorspec) primitive "stroke #{enquote(colorspec)}" end |
#stroke=(stroke) ⇒ Object
93 94 95 96 |
# File 'lib/rmagick4j/draw.rb', line 93 def stroke= stroke @draw.setStroke(Magick4J.ColorDatabase.queryDefault(stroke)) self end |
#stroke_antialias(bool) ⇒ Object
Specify if stroke should be antialiased or not
538 539 540 541 |
# File 'lib/RMagick.rb', line 538 def stroke_antialias(bool) bool = bool ? '1' : '0' primitive "stroke-antialias #{bool}" end |
#stroke_dasharray(*list) ⇒ Object
Specify a stroke dash pattern
544 545 546 547 548 549 550 551 552 553 554 555 |
# File 'lib/RMagick.rb', line 544 def stroke_dasharray(*list) if list.length == 0 primitive "stroke-dasharray none" else list.each { |x| if x <= 0 then Kernel.raise ArgumentError, "dash array elements must be > 0 (#{x} given)" end } primitive "stroke-dasharray #{list.join(',')}" end end |
#stroke_dashoffset(value = 0) ⇒ Object
Specify the initial offset in the dash pattern
558 559 560 |
# File 'lib/RMagick.rb', line 558 def stroke_dashoffset(value=0) primitive "stroke-dashoffset #{value}" end |
#stroke_linecap(value) ⇒ Object
562 563 564 565 566 567 |
# File 'lib/RMagick.rb', line 562 def stroke_linecap(value) if ( not ["butt", "round", "square"].include?(value.downcase) ) Kernel.raise ArgumentError, "Unknown linecap type: #{value}" end primitive "stroke-linecap #{value}" end |
#stroke_linejoin(value) ⇒ Object
569 570 571 572 573 574 |
# File 'lib/RMagick.rb', line 569 def stroke_linejoin(value) if ( not ["round", "miter", "bevel"].include?(value.downcase) ) Kernel.raise ArgumentError, "Unknown linejoin type: #{value}" end primitive "stroke-linejoin #{value}" end |
#stroke_miterlimit(value) ⇒ Object
576 577 578 579 580 581 |
# File 'lib/RMagick.rb', line 576 def stroke_miterlimit(value) if (value < 1) Kernel.raise ArgumentError, "miterlimit must be >= 1" end primitive "stroke-miterlimit #{value}" end |
#stroke_opacity(value) ⇒ Object
Specify opacity of stroke drawing color
(use "xx%" to indicate percentage)
585 586 587 |
# File 'lib/RMagick.rb', line 585 def stroke_opacity(value) primitive "stroke-opacity #{value}" end |
#stroke_width(pixels) ⇒ Object
Specify stroke (outline) width in pixels.
590 591 592 |
# File 'lib/RMagick.rb', line 590 def stroke_width(pixels) primitive "stroke-width #{pixels}" end |
#text(x, y, text) ⇒ Object
Draw text at position x,y. Add quotes to text that is not already quoted.
595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 |
# File 'lib/RMagick.rb', line 595 def text(x, y, text) if text.to_s.empty? Kernel.raise ArgumentError, "missing text argument" end if text.length > 2 && /\A(?:\"[^\"]+\"|\'[^\']+\'|\{[^\}]+\})\z/.match(text) ; # text already quoted elsif !text['\''] text = '\''+text+'\'' elsif !text['"'] text = '"'+text+'"' elsif !(text['{'] || text['}']) text = '{'+text+'}' else # escape existing braces, surround with braces text = '{' + text.gsub(/[}]/) { |b| '\\' + b } + '}' end primitive "text #{x},#{y} #{text}" end |
#text_align(alignment) ⇒ Object
Specify text alignment relative to a given point
615 616 617 618 619 620 |
# File 'lib/RMagick.rb', line 615 def text_align(alignment) if ( not ALIGN_TYPE_NAMES.has_key?(alignment.to_i) ) Kernel.raise ArgumentError, "Unknown alignment constant: #{alignment}" end primitive "text-align #{ALIGN_TYPE_NAMES[alignment.to_i]}" end |
#text_anchor(anchor) ⇒ Object
SVG-compatible version of text_align
623 624 625 626 627 628 |
# File 'lib/RMagick.rb', line 623 def text_anchor(anchor) if ( not ANCHOR_TYPE_NAMES.has_key?(anchor.to_i) ) Kernel.raise ArgumentError, "Unknown anchor constant: #{anchor}" end primitive "text-anchor #{ANCHOR_TYPE_NAMES[anchor.to_i]}" end |
#text_antialias(boolean) ⇒ Object
Specify if rendered text is to be antialiased.
631 632 633 634 |
# File 'lib/RMagick.rb', line 631 def text_antialias(boolean) boolean = boolean ? '1' : '0' primitive "text-antialias #{boolean}" end |
#text_undercolor(color) ⇒ Object
Specify color underneath text
637 638 639 |
# File 'lib/RMagick.rb', line 637 def text_undercolor(color) primitive "text-undercolor #{enquote(color)}" end |
#translate(x, y) ⇒ Object
Specify center of coordinate space to use for subsequent drawing commands.
643 644 645 |
# File 'lib/RMagick.rb', line 643 def translate(x, y) primitive "translate #{x},#{y}" end |