Higher-quality cursors with a shadow to make them visible on light backgrounds.

Same look as in 760606d except for the linking book, which got a slight
curvature on the pages (inspired by Deledrius' one, 99bda8c).

The SVG is hand-tweaked to work around some differences in rendering between
rsvg and Inkscape. I hope editing it in Inkscape again won't break the tweaks,
check the diff closely if you do!

Effects (blurred shadows) appear to be clipped to the SVG viewport by rsvg,
which is why drawing the whole SVG shifted for the book cursors no longer
works and we shift individual layers inside the SVG instead.

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/Apps/plClient/external/render_svg.py

@@ -20,30 +20,32 @@ cursorList = {
 	"cursor_up": ["circleOuter"],
 	"cursor_poised": ["circleOuter", "circleInnerOpen"],
 	"cursor_clicked": ["circleOuter", "circleInnerClosed"],
-	"cursor_disabled": ["circleOuter", "cross"],
+	"cursor_disabled": ["cross"],
 
-	"cursor_open": ["circleOuter", "arrowGreyUpper", "arrowGreyLower"],
-	"cursor_grab": ["circleOuter", "circleInnerClosed", "arrowGreyUpper", "arrowGreyLower"],
-	"cursor_updown_open": ["circleOuter", "circleInnerClosed", "arrowGreyUpper", "arrowGreyLower"],
-	"cursor_updown_closed": ["circleOuter", "circleInnerClosed", "arrowWhiteUpper", "arrowWhiteLower"],
+	"cursor_open": ["circleOuter", "arrowTranslucentUpper", "arrowTranslucentLower"],
+	"cursor_grab": ["circleOuter", "circleInnerOpen", "arrowTranslucentUpper", "arrowTranslucentLower"],
+	"cursor_updown_open": ["circleOuter", "circleInnerOpen", "arrowTranslucentUpper", "arrowTranslucentLower"],
+	"cursor_updown_closed": ["circleOuter", "circleInnerClosed", "arrowOpaqueUpper", "arrowOpaqueLower"],
 
-	"cursor_leftright_open": ["circleOuter", "circleInnerClosed", "arrowGreyRight", "arrowGreyLeft"],
-	"cursor_leftright_closed": ["circleOuter", "circleInnerClosed", "arrowWhiteRight", "arrowWhiteLeft"],
+	"cursor_leftright_open": ["circleOuter", "circleInnerOpen", "arrowTranslucentLeft", "arrowTranslucentRight"],
+	"cursor_leftright_closed": ["circleOuter", "circleInnerClosed", "arrowOpaqueLeft", "arrowOpaqueRight"],
 
-	"cursor_4way_open": ["circleOuter", "circleInnerClosed", "arrowGreyUpper", "arrowGreyRight", "arrowGreyLower", "arrowGreyLeft"],
-	"cursor_4way_closed": ["circleOuter", "circleInnerClosed", "arrowWhiteUpper", "arrowWhiteRight", "arrowWhiteLower", "arrowWhiteLeft"],
+	"cursor_4way_open": ["circleOuter", "circleInnerOpen", "arrowTranslucentUpper", "arrowTranslucentRight", "arrowTranslucentLower", "arrowTranslucentLeft"],
+	"cursor_4way_closed": ["circleOuter", "circleInnerClosed", "arrowOpaqueUpper", "arrowOpaqueRight", "arrowOpaqueLower", "arrowOpaqueLeft"],
 
-	"cursor_upward": ["circleOuter", "arrowWhiteUpper"],
-	"cursor_right": ["circleOuter", "arrowWhiteRight"],
-	"cursor_down": ["circleOuter", "arrowWhiteLower"],
-	"cursor_left": ["circleOuter", "arrowWhiteLeft"],
+	"cursor_upward": ["circleOuter", "arrowOpaqueUpper"],
+	"cursor_right": ["circleOuter", "arrowOpaqueRight"],
+	"cursor_down": ["circleOuter", "arrowOpaqueLower"],
+	"cursor_left": ["circleOuter", "arrowOpaqueLeft"],
 
 	"cursor_book": ["circleOuter", "book"],
 	"cursor_book_poised": ["circleOuter", "circleInnerOpen", "book"],
 	"cursor_book_clicked": ["circleOuter", "circleInnerClosed", "book"],
 }
 cursorOffsetList = {
-	"book": [8, 8]
+	"cursor_book": [7, 7],
+	"cursor_book_poised": [7, 7],
+	"cursor_book_clicked": [7, 7]
 }
 
 textList = {
@@ -62,6 +64,15 @@ def enable_only_layers(layerlist, layers):
 			layers[layer].setAttribute("style","")
 		else:
 			layers[layer].setAttribute("style","display:none")
+	# sanity check
+	for layer in layerlist:
+		if layer not in layers:
+			print("warning: unknown layer", layer)
+
+def shift_all_layers(layers, shiftx, shifty):
+	# note: this assumes that all layers start out with no transform of their own
+	for layer in layers:
+		layers[layer].setAttribute("transform", "translate(%g,%g)" % (shiftx, shifty))
 
 def get_layers_from_svg(svgData):
 	inkscapeNS = "http://www.inkscape.org/namespaces/inkscape"
@@ -75,13 +86,13 @@ def get_layers_from_svg(svgData):
 	return layers
 
 def render_cursors(inpath, outpath):
-	resSize = {"width":32, "height":32}
+	scalefactor = 1
 	with open(os.path.join(inpath,"Cursor_Base.svg"), "r") as svgFile:
 		cursorSVG = parse(svgFile)
 		layers = get_layers_from_svg(cursorSVG)
-		ratioW = resSize["width"] / float(cursorSVG.documentElement.getAttribute("width"))
-		ratioH = resSize["height"] / float(cursorSVG.documentElement.getAttribute("height"))
-		surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, resSize["width"], resSize["height"])
+		svgwidth = float(cursorSVG.documentElement.getAttribute("width"))
+		svgheight = float(cursorSVG.documentElement.getAttribute("height"))
+		surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(math.ceil(scalefactor*svgwidth)), int(math.ceil(scalefactor*svgheight)))
 
 		for cursor in cursorList:
 			ctx = cairo.Context(surface)
@@ -90,13 +101,14 @@ def render_cursors(inpath, outpath):
 			ctx.paint()
 			ctx.restore()
 
-			enable_only_layers(cursorList[cursor], layers)
+			enabledlayers = cursorList[cursor]
+			enabledlayers = enabledlayers + [l + "Shadow" for l in enabledlayers]
+			enable_only_layers(enabledlayers, layers)
+
+			shift_all_layers(layers, *cursorOffsetList.get(cursor, [0, 0]))
 
-			for layerName in cursorOffsetList:
-				if layerName in cursorList[cursor]:
-					ctx.translate(*cursorOffsetList[layerName])
 			svg = rsvg.Handle(data=cursorSVG.toxml())
-			ctx.scale(ratioW, ratioH)
+			ctx.scale(scalefactor, scalefactor)
 			svg.render_cairo(ctx)
 
 			surface.write_to_png(os.path.join(outpath, cursor + ".png"))