tools: adds a glyphs plugin script for adjusting sidebearings

1 files changed, 222 insertions, 0 deletions

diff --git a/misc/glyphs-scripts/adjust-box-width.py b/misc/glyphs-scripts/adjust-box-width.py
new file mode 100644
index 000000000..84613617e
--- /dev/null
+++ b/misc/glyphs-scripts/adjust-box-width.py
@@ -0,0 +1,222 @@
+#MenuTitle: Adjust glyph box width
+# -*- coding: utf-8 -*-
+from __future__ import print_function
+import GlyphsApp
+from math import ceil, floor
+from os.path import basename
+import vanilla
+from vanilla import FloatingWindow, TextBox, EditText, Button
+
+prefsKey = "me.rsms.adjust-sidebearings"
+
+
+# glyphs which should never be resized
+excludedGlyphNames = set([
+  "emquad",
+  "emspace",
+  "enspace",
+  "thirdemspace",
+  "sixthemspace",
+  "quarteremspace",
+  "emdash", "emdash.case",
+  "endash", "endash.case",
+])
+
+class Script( object ):
+  def __init__(self):
+    self.valuesPrefsKey = prefsKey + ".delta." + basename(Glyphs.font.filepath)
+    # UI metrics
+    spacing = 8
+    height = 22
+    # calculate window height
+    minWinSize = (220, 120 + (len(Glyphs.font.masters) * (height + spacing)))
+    # create UI window
+    self.w = FloatingWindow(
+      minWinSize,
+      "Adjust sidebearings",
+      minSize=minWinSize,
+      maxSize=(500, 500),
+      autosaveName=prefsKey + ".win")
+    # layout UI controls
+    y = 16
+    self.w.label = TextBox((16, y, -16, height), "Sidebearing delta adjustment:")
+    y += height + spacing
+
+    inputWidth = 64
+    for master in Glyphs.font.masters:
+      setattr(self.w, "deltaLabel%s" % master.id,
+        TextBox((16, y, -16-inputWidth, height), master.name))
+      setattr(self.w, "deltaInput%s" % master.id,
+        EditText((-16-inputWidth, y, -16, height), "16"))
+      # print("self.w.deltaInputs[master.id]", getattr(self.w, "deltaInput%s" % master.id))
+      y += height + spacing
+
+    self.w.submitButton = Button(
+      (16, -16-height, -16, height),
+      "Adjust all sidebearings",
+      callback=self.onSubmit)
+    # finalize UI
+    self.w.setDefaultButton(self.w.submitButton)
+    self.loadPreferences()
+    self.w.bind("close", self.savePreferences)
+
+    # make sure window is large enough to show all masters
+    x, y, w, h = self.w.getPosSize()
+    if w < minWinSize[0] and h < minWinSize[1]:
+      self.w.setPosSize((x, y, minWinSize[0], minWinSize[1]), animate=False)
+    elif w < minWinSize[0]:
+      self.w.setPosSize((x, y, minWinSize[0], h), animate=False)
+    elif h < minWinSize[1]:
+      self.w.setPosSize((x, y, w, minWinSize[1]), animate=False)
+
+    self.w.open()
+    self.w.makeKey()
+
+
+  def getDeltaInputForMaster(self, masterId):
+    return getattr(self.w, "deltaInput%s" % masterId)
+
+
+  def loadPreferences(self):
+    try:
+      Glyphs.registerDefault(self.valuesPrefsKey, [])
+      for t in Glyphs.defaults[self.valuesPrefsKey]:
+        try:
+          masterId, value = t
+          self.getDeltaInputForMaster(masterId).set(value)
+        except:
+          pass
+    except:
+      print("failed to load preferences")
+
+
+  def savePreferences(self, sender):
+    try:
+      values = []
+      for master in Glyphs.font.masters:
+        values.append((master.id, self.getDeltaInputForMaster(master.id).get()))
+      Glyphs.defaults[self.valuesPrefsKey] = values
+    except:
+      print("failed to save preferences")
+
+
+  def onSubmit(self, sender):
+    try:
+      sender.enable(False)
+      if performFontChanges(self.action1):
+        self.w.close()
+    except Exception, e:
+      Glyphs.showMacroWindow()
+      print("error: %s" % e)
+    finally:
+      sender.enable(True)
+
+
+  def action1(self, font):
+    print(font)
+
+    deltas = {}  # keyed on master.id
+    for master in Glyphs.font.masters:
+      deltas[master.id] = int(self.getDeltaInputForMaster(master.id).get())
+    syncLayers = set()  # layers that need syncMetrics() to be called
+
+    # [debug] alterntive loop over a few select glyphs, for debugging.
+    # debugGlyphNames = set([
+    #   ".null",
+    #   "A", "Adieresis", "Lambda",
+    #   "Bhook",
+    #   "C", "Chook",
+    #   "endash",
+    #   "space",
+    # ])
+    # for g in [g for g in font.glyphs if g.name in debugGlyphNames]:
+    for g in font.glyphs:
+      # print(">> %s  (%s)" % (g.name, g.productionName))
+      if g.name in excludedGlyphNames:
+        # glyph is exlcuded
+        print("ignoring excluded glyph %r" % g.name)
+        continue
+      g.beginUndo()
+      try:
+        for master in font.masters:
+          layer = g.layers[master.id]
+          delta = deltas[master.id]
+          if delta == 0:
+            # no adjustment
+            continue
+
+          if layer.width == 0:
+            # ignore glyphs with zero-width layers
+            print("ignoring zero-width glyph", g.name)
+            break
+
+          if layer.isAligned:
+            # ignore glyphs which are auto-aligned from components
+            print("ignoring auto-aligned glyph", g.name)
+            break
+
+          if len(layer.paths) == 0 and len(layer.components) == 0:
+            # adjust width instead of LSB & RSB of empty glyphs
+            if layer.widthMetricsKey is None:
+              layer.width = max(0, layer.width + (delta * 2))
+            else:
+              syncLayers.add(layer)
+            continue
+
+          # offset components by delta to counter-act effect of also applying delta
+          # to the component glyphs.
+          if layer.components is not None:
+            for cn in layer.components:
+              m = cn.transform
+              #         auto-aligned       or offset x or offset y   or contains shapes
+              if not cn.automaticAlignment or m[4] != 0 or m[5] != 0 or len(layer.paths) > 0:
+                cn.transform = (
+                  m[0], # x scale factor
+                  m[1], # x skew factor
+                  m[2], # y skew factor
+                  m[3], # y scale factor
+                  m[4] - delta, # x position (+ since transform is inverse)
+                  m[5]     # y position
+                )
+
+          # Note:
+          # layer metrics keys are expressions, e.g. "==H+10"
+          # glyph metrics keys are other glyphs, e.g. U+0041
+
+          if g.leftMetricsKey is None and layer.leftMetricsKey is None:
+            layer.LSB = layer.LSB + delta
+          else:
+            syncLayers.add(layer)
+
+          if g.rightMetricsKey is None and layer.rightMetricsKey is None:
+            layer.RSB = layer.RSB + delta
+          else:
+            syncLayers.add(layer)
+
+      finally:
+        g.endUndo()
+
+    # end for g in font
+
+    # sync layers that use metricsKey
+    if len(syncLayers) > 0:
+      print("Syncing LSB & RSB for %r layers..." % len(syncLayers))
+      for layer in syncLayers:
+        layer.syncMetrics()
+    print("Done")
+
+
+
+def performFontChanges(f):
+  font = Glyphs.font
+  font.disableUpdateInterface()
+  try:
+    f(font)
+    return True  # success (as a result, the ui window will be closed)
+  finally:
+    font.enableUpdateInterface()
+  return False  # error
+
+
+Glyphs.clearLog()
+Script()