We claim the ornamental design for an electronic canvas, as shown and described.
FIG. 1 is a perspective view of an electronic canvas showing the new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left-side elevation view thereof;
FIG. 5 is a right-side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view of an electronic canvas showing a state of the display rotated at 90 degrees;
FIG. 9 is a front elevation view thereof;
FIG. 10 is a rear elevation view thereof;
FIG. 11 is a left-side elevation view thereof;
FIG. 12 is a right-side elevation view thereof;
FIG. 13 is a top plan view thereof;
FIG. 14 is a bottom plan view thereof; and,
FIG. 15 is a perspective view of an electronic canvas showing a state of the display rotated at 90 degrees and in a higher position relative to the stand feature.