Add width parameter to rectangle

Tests/test_imagedraw.py

@@ -343,6 +343,30 @@ class TestImageDraw(PillowTestCase):
         # Assert
         self.assert_image_similar(im, Image.open(expected), 1)
 
+    def test_rectangle_width(self):
+        # Arrange
+        im = Image.new("RGB", (W, H))
+        draw = ImageDraw.Draw(im)
+        expected = "Tests/images/imagedraw_rectangle_width.png"
+
+        # Act
+        draw.rectangle(BBOX1, outline="green", width=5)
+
+        # Assert
+        self.assert_image_equal(im, Image.open(expected))
+
+    def test_rectangle_width_fill(self):
+        # Arrange
+        im = Image.new("RGB", (W, H))
+        draw = ImageDraw.Draw(im)
+        expected = "Tests/images/imagedraw_rectangle_width_fill.png"
+
+        # Act
+        draw.rectangle(BBOX1, fill="blue", outline="green", width=5)
+
+        # Assert
+        self.assert_image_equal(im, Image.open(expected))
+
     def test_floodfill(self):
         # Arrange
         im = Image.new("RGB", (W, H))

docs/reference/ImageDraw.rst

@@ -220,7 +220,7 @@ Methods
     :param outline: Color to use for the outline.
     :param fill: Color to use for the fill.
 
-.. py:method:: PIL.ImageDraw.ImageDraw.rectangle(xy, fill=None, outline=None)
+.. py:method:: PIL.ImageDraw.ImageDraw.rectangle(xy, fill=None, outline=None, width=0)
 
     Draws a rectangle.
 
@@ -229,6 +229,9 @@ Methods
             is just outside the drawn rectangle.
     :param outline: Color to use for the outline.
     :param fill: Color to use for the fill.
+    :param width: The line width, in pixels.
+
+        .. versionadded:: 5.2.0
 
 .. py:method:: PIL.ImageDraw.ImageDraw.shape(shape, fill=None, outline=None)
 

src/PIL/ImageDraw.py

@@ -186,13 +186,13 @@ class ImageDraw(object):
         if ink is not None:
             self.draw.draw_polygon(xy, ink, 0)
 
-    def rectangle(self, xy, fill=None, outline=None):
+    def rectangle(self, xy, fill=None, outline=None, width=0):
         """Draw a rectangle."""
         ink, fill = self._getink(outline, fill)
         if fill is not None:
             self.draw.draw_rectangle(xy, fill, 1)
         if ink is not None:
-            self.draw.draw_rectangle(xy, ink, 0)
+            self.draw.draw_rectangle(xy, ink, 0, width)
 
     def _multiline_check(self, text):
         """Draw text."""

src/_imaging.c

@@ -2931,7 +2931,8 @@ _draw_rectangle(ImagingDrawObject* self, PyObject* args)
     PyObject* data;
     int ink;
     int fill = 0;
-    if (!PyArg_ParseTuple(args, "Oi|i", &data, &ink, &fill))
+    int width = 0;
+    if (!PyArg_ParseTuple(args, "Oi|ii", &data, &ink, &fill, &width))
         return NULL;
 
     n = PyPath_Flatten(data, &xy);
@@ -2945,7 +2946,7 @@ _draw_rectangle(ImagingDrawObject* self, PyObject* args)
     n = ImagingDrawRectangle(self->image->image,
                              (int) xy[0], (int) xy[1],
                              (int) xy[2], (int) xy[3],
-                             &ink, fill, self->blend
+                             &ink, fill, width, self->blend
                              );
 
     free(xy);

src/libImaging/Draw.c

@@ -634,8 +634,9 @@ ImagingDrawWideLine(Imaging im, int x0, int y0, int x1, int y1,
 
 int
 ImagingDrawRectangle(Imaging im, int x0, int y0, int x1, int y1,
-                     const void* ink_, int fill, int op)
+                     const void* ink_, int fill, int width, int op)
 {
+    int i;
     int y;
     int tmp;
     DRAW* draw;
@@ -662,13 +663,16 @@ ImagingDrawRectangle(Imaging im, int x0, int y0, int x1, int y1,
             draw->hline(im, x0, y, x1, ink);
 
     } else {
-
         /* outline */
-        draw->line(im, x0, y0, x1, y0, ink);
-        draw->line(im, x1, y0, x1, y1, ink);
-        draw->line(im, x1, y1, x0, y1, ink);
-        draw->line(im, x0, y1, x0, y0, ink);
-
+        if (width == 0) {
+            width = 1;
+        }
+        for (i = 0; i < width; i++) {
+            draw->hline(im, x0, y0+i, x1, ink);
+            draw->hline(im, x0, y1-i, x1, ink);
+            draw->line(im, x1-i, y0, x1-i, y1, ink);
+            draw->line(im, x0+i, y1, x0+i, y0, ink);
+        }
     }
 
     return 0;

src/libImaging/Imaging.h

@@ -368,7 +368,7 @@ extern int ImagingDrawPoint(Imaging im, int x, int y, const void* ink, int op);
 extern int ImagingDrawPolygon(Imaging im, int points, int *xy,
                               const void* ink, int fill, int op);
 extern int ImagingDrawRectangle(Imaging im, int x0, int y0, int x1, int y1,
-                                const void* ink, int fill, int op);
+                                const void* ink, int fill, int width, int op);
 
 /* Level 2 graphics (WORK IN PROGRESS) */
 extern ImagingOutline ImagingOutlineNew(void);