Added support for six-parameter radial gradients.

The extended radial gradients conform to the radial gradient
specification in HTML 5 canvas.

Task-number: QTBUG-14075
Reviewed-by: Andreas Kling
(cherry picked from commit da55c1ea92474e989e5582b02815936bbf584405)

2 files changed, 95 insertions, 0 deletions

diff --git a/tests/arthur/data/qps/radial_gradients_extended.qps b/tests/arthur/data/qps/radial_gradients_extended.qps
new file mode 100644
index 0000000000..d80a149252
--- /dev/null
+++ b/tests/arthur/data/qps/radial_gradients_extended.qps
@@ -0,0 +1,95 @@
+path_addRect path 400 0 80 80
+path_addEllipse path 440 40 60 60
+
+setRenderHint Antialiasing
+
+setPen black
+
+begin_block gradients
+gradient_clearStops
+gradient_appendStop 0    red
+gradient_appendStop 0.25 orange
+gradient_appendStop 0.5  yellow
+gradient_appendStop 0.8  green
+gradient_appendStop 1    cyan
+
+gradient_setSpread PadSpread
+gradient_setRadialExtended 0 0 20 40 40 10
+drawRect 0 0 100 100
+
+gradient_setSpread ReflectSpread
+gradient_setRadialExtended 120 20 20 140 40 10
+drawEllipse 100 0 100 100
+
+gradient_setSpread RepeatSpread
+gradient_setRadialExtended 240 20 20 260 40 10
+drawRoundRect 200 0 100 100
+
+gradient_clearStops
+gradient_appendStop 0   3f7f7fff
+gradient_appendStop 0.5 dfdfffff
+gradient_appendStop 1   7f00007f
+
+gradient_setSpread PadSpread
+gradient_setRadialExtended 320 20 20 340 40 10
+drawPolygon [300 0 390 0 350 99]
+
+gradient_setSpread ReflectSpread
+gradient_setRadialExtended 420 20 20 440 40 10
+drawPath path
+
+gradient_setSpread RepeatSpread
+gradient_setRadialExtended 520 20 20 540 40 10
+drawPie 500 0 100 100 720 4320
+end_block
+
+translate 0 100
+scale 1 2
+repeat_block gradients
+
+resetMatrix
+translate 0 300
+brushTranslate 30 0
+brushScale 0.9 0.9
+repeat_block gradients
+
+# Some helpful info perhaps?
+resetMatrix
+setPen black
+
+drawText 610 50 "No XForm"
+drawText 610 200 "scale 1x2"
+drawText 610 300 "brush transform"
+drawText 10 450 "Pad"
+drawText 110 450 "Reflect"
+drawText 210 450 "Repeat"
+drawText 310 450 "Pad w/alpha"
+drawText 410 450 "Reflect w/alpha"
+drawText 510 450 "Repeat w/alpha"
+
+# Radius and focal indicators
+setPen 3f000000
+setBrush nobrush
+
+begin_block ellipse_draw
+setClipRect 0 0 100 100
+drawEllipse -30 -30 100 100
+drawEllipse 35 35 11 11
+translate 100 0
+end_block
+
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+
+resetMatrix
+translate 0 100
+scale 1 2
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+repeat_block ellipse_draw
+repeat_block ellipse_draw
diff --git a/tests/arthur/data/qps/radial_gradients_extended_qps.png b/tests/arthur/data/qps/radial_gradients_extended_qps.png
new file mode 100644
index 0000000000..45a3e6036c
--- /dev/null
+++ b/tests/arthur/data/qps/radial_gradients_extended_qps.png