| #!/usr/bin/env python3 |
| |
| from utils import mathfont |
| import fontforge |
| |
| # Create a WOFF font with glyphs for all the operator strings. |
| font = mathfont.create("stretchy", "Copyright (c) 2021 Igalia S.L.") |
| |
| # Set parameters for stretchy tests. |
| font.math.MinConnectorOverlap = mathfont.em // 2 |
| |
| # Make sure that underover parameters don't add extra spacing. |
| font.math.LowerLimitBaselineDropMin = 0 |
| font.math.LowerLimitGapMin = 0 |
| font.math.StretchStackBottomShiftDown = 0 |
| font.math.StretchStackGapAboveMin = 0 |
| font.math.UnderbarVerticalGap = 0 |
| font.math.UnderbarExtraDescender = 0 |
| font.math.UpperLimitBaselineRiseMin = 0 |
| font.math.UpperLimitGapMin = 0 |
| font.math.StretchStackTopShiftUp = 0 |
| font.math.StretchStackGapBelowMin = 0 |
| font.math.OverbarVerticalGap = 0 |
| font.math.AccentBaseHeight = 0 |
| font.math.OverbarExtraAscender = 0 |
| |
| # These two characters will be stretchable in both directions. |
| horizontalArrow = 0x295A # LEFTWARDS HARPOON WITH BARB UP FROM BAR |
| verticalArrow = 0x295C # UPWARDS HARPOON WITH BARB RIGHT FROM BAR |
| |
| mathfont.createSizeVariants(font) |
| |
| # Add stretchy vertical and horizontal constructions for the horizontal arrow. |
| mathfont.createSquareGlyph(font, horizontalArrow) |
| mathfont.createStretchy(font, horizontalArrow, True) |
| mathfont.createStretchy(font, horizontalArrow, False) |
| |
| # Add stretchy vertical and horizontal constructions for the vertical arrow. |
| mathfont.createSquareGlyph(font, verticalArrow) |
| mathfont.createStretchy(font, verticalArrow, True) |
| mathfont.createStretchy(font, verticalArrow, False) |
| |
| mathfont.save(font) |
