scripts: Add keymap-render.py script

Add a script for generating a png with the short-name (ignoring variants)
of all keymaps listed by "localectl list-keymaps" pre-generated.

This scripts also generates a ply-keymap-metadata.h file with info on
which pre-generated keymap name is where in the png.

This will be used in a follow-up commit to add support for a new
keyboard-keymap-icon control to libply-splash-graphics.

Note that this commit does not add the generated keymap-render.png file,
this file will be added to each themes image-dir separately as the color
of the pre-generated text may differ per theme.

Changes by Hans de Goede:
- Change generated metadata into a C header file
- Drop drawing of curved corners, we just want the text
- Add special handling for dvorak

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/scripts/keymap-render.py b/scripts/keymap-render.py
new file mode 100755 (executable)
index 0000000..495a993
--- /dev/null
+++ b/scripts/keymap-render.py
@@ -0,0 +1,99 @@
+#!/usr/bin/python3
+# coding: utf-8
+import cairo
+import subprocess
+import math
+
+
+FONT_SIZE = 30
+MARGIN = int(FONT_SIZE / 3)
+
+def get_keymaps():
+        keymaps = subprocess.check_output(["localectl", "list-keymaps"]).decode("utf-8").strip().split()
+
+        # Note when changing this you MUST keep ply_keymap_normalize_keymap()
+        # from src/libply-splash-graphics/ply-keymap-icon.c in sync
+        def normalize_keymaps(keymap):
+                parts = keymap.replace("_", "-").replace(".", "-").split("-")
+
+                # Special case for dvorak, E.g. when mixing "us" and "us-dvorak"
+                # on machines returning "us" for both is not useful.
+                # Presumably users using dvorak now which variant they use
+                # so we just describe all dvorak layouts as "dvorak".
+                if "dvorak" in keymap:
+                        return "dvorak"
+
+                # mac / sun keymaps are prefixes with mac / sun / sun[4-6]t
+                for prefix in ["mac", "sun" ]:
+                        if keymap.startswith(prefix) and len(parts) > 1:
+                                return parts[1]
+
+                return parts[0]
+
+        keymaps = list(map(normalize_keymaps ,keymaps))
+
+        #Remove duplicates
+        ret = []
+        for k in keymaps:
+                if k not in ret:
+                        ret.append(k)
+        return ret
+
+
+# Calculate size
+sf = cairo.ImageSurface(cairo.FORMAT_ARGB32, 1, 1)
+ct = cairo.Context(sf)
+ct.select_font_face("Cantarell", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
+ct.set_font_size(FONT_SIZE)
+
+max_height = 0.0
+total_width = 0.0
+for i in get_keymaps():
+        extents = ct.text_extents(i)
+        h = extents.height
+        if h > max_height:
+                max_height = h
+        total_width += extents.width
+        total_width += MARGIN * 2
+ascent, descent, _h, _max_x, max_y = ct.font_extents()
+
+# Create image
+sf = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(total_width), int(max_height + MARGIN * 2))
+ct = cairo.Context(sf)
+ct.save()
+ct.set_source_rgba(0, 0, 0, 0)
+ct.set_operator (cairo.OPERATOR_SOURCE)
+ct.paint()
+ct.restore()
+ct.select_font_face("Cantarell", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
+ct.set_font_size(FONT_SIZE)
+ct.set_source_rgba(0.9, 0.9, 0.9, 1.0)
+
+ct.move_to(MARGIN, MARGIN + max_height - descent)
+current_x, current_y = (MARGIN, MARGIN + max_height - descent)
+metadata = []
+for km in get_keymaps():
+        extents = ct.text_extents(km)
+        ct.show_text(km)
+        metadata.append((km, current_x, extents.width + MARGIN * 2))
+        current_x += extents.width + (MARGIN * 2)
+        ct.move_to(current_x, current_y)
+
+sf.write_to_png("keymap-render.png")
+
+print("/* This file is autogenerated by running:")
+print(" * scripts/keymap-render.py > src/libply-splash-graphics/ply-keymap-metadata.h")
+print(" */")
+print("struct ply_keymap_metadata {")
+print("        const char *name;")
+print("        int offset;")
+print("        int width;")
+print("};")
+print("")
+print("static struct ply_keymap_metadata ply_keymap_metadata[] = {")
+
+for i in metadata:
+        print(("        { \"%s\", %d, %d }," % (i[0],i[1],i[2])))
+
+print("        { NULL, } /* End of array marker */ ")
+print("};")

diff --git a/src/libply-splash-graphics/ply-keymap-metadata.h b/src/libply-splash-graphics/ply-keymap-metadata.h
new file mode 100644 (file)
index 0000000..854c39d
--- /dev/null
+++ b/src/libply-splash-graphics/ply-keymap-metadata.h
@@ -0,0 +1,138 @@
+/* This file is autogenerated by running:
+ * scripts/keymap-render.py > src/libply-splash-graphics/ply-keymap-metadata.h
+ */
+struct ply_keymap_metadata {
+        const char *name;
+        int offset;
+        int width;
+};
+
+static struct ply_keymap_metadata ply_keymap_metadata[] = {
+        { "dvorak", 10, 113 },
+        { "al", 123, 44 },
+        { "amiga", 167, 101 },
+        { "applkey", 268, 126 },
+        { "at", 394, 46 },
+        { "atari", 440, 81 },
+        { "az", 521, 49 },
+        { "azerty", 570, 104 },
+        { "ba", 674, 49 },
+        { "backspace", 723, 157 },
+        { "bashkir", 880, 119 },
+        { "be", 999, 50 },
+        { "bg", 1049, 51 },
+        { "br", 1100, 48 },
+        { "by", 1148, 51 },
+        { "bywin", 1199, 98 },
+        { "ca", 1297, 47 },
+        { "carpalx", 1344, 118 },
+        { "cf", 1462, 45 },
+        { "ch", 1507, 49 },
+        { "cm", 1556, 59 },
+        { "cn", 1615, 49 },
+        { "croat", 1664, 89 },
+        { "ctrl", 1753, 65 },
+        { "cz", 1818, 47 },
+        { "de", 1865, 51 },
+        { "defkeymap", 1916, 170 },
+        { "dk", 2086, 53 },
+        { "dz", 2139, 50 },
+        { "ee", 2189, 50 },
+        { "emacs", 2239, 106 },
+        { "emacs2", 2345, 122 },
+        { "en", 2467, 51 },
+        { "epo", 2518, 68 },
+        { "es", 2586, 49 },
+        { "et", 2635, 46 },
+        { "euro", 2681, 80 },
+        { "euro1", 2761, 95 },
+        { "euro2", 2856, 97 },
+        { "fi", 2953, 38 },
+        { "fo", 2991, 47 },
+        { "fr", 3038, 44 },
+        { "gb", 3082, 53 },
+        { "ge", 3135, 51 },
+        { "gh", 3186, 52 },
+        { "gr", 3238, 49 },
+        { "hr", 3287, 48 },
+        { "hu", 3335, 50 },
+        { "hu101", 3385, 99 },
+        { "ie", 3484, 42 },
+        { "il", 3526, 36 },
+        { "in", 3562, 43 },
+        { "iq", 3605, 43 },
+        { "ir", 3648, 40 },
+        { "is", 3688, 41 },
+        { "it", 3729, 38 },
+        { "it2", 3767, 54 },
+        { "jp", 3821, 46 },
+        { "jp106", 3867, 96 },
+        { "kazakh", 3963, 112 },
+        { "ke", 4075, 49 },
+        { "keypad", 4124, 114 },
+        { "kr", 4238, 47 },
+        { "ky", 4285, 50 },
+        { "kyrgyz", 4335, 107 },
+        { "kz", 4442, 48 },
+        { "la", 4490, 42 },
+        { "latam", 4532, 97 },
+        { "lk", 4629, 45 },
+        { "lt", 4674, 39 },
+        { "lv", 4713, 44 },
+        { "ma", 4757, 59 },
+        { "pl", 4816, 44 },
+        { "pt", 4860, 46 },
+        { "se", 4906, 48 },
+        { "template", 4954, 142 },
+        { "uk", 5096, 53 },
+        { "us", 5149, 50 },
+        { "md", 5199, 61 },
+        { "me", 5260, 60 },
+        { "mk", 5320, 62 },
+        { "mk0", 5382, 79 },
+        { "ml", 5461, 54 },
+        { "mm", 5515, 71 },
+        { "mt", 5586, 56 },
+        { "ng", 5642, 51 },
+        { "nl", 5693, 44 },
+        { "nl2", 5737, 60 },
+        { "no", 5797, 51 },
+        { "pc110", 5848, 95 },
+        { "ph", 5943, 51 },
+        { "pl1", 5994, 58 },
+        { "pl2", 6052, 60 },
+        { "pl3", 6112, 60 },
+        { "pl4", 6172, 62 },
+        { "ro", 6234, 46 },
+        { "rs", 6280, 44 },
+        { "ru", 6324, 45 },
+        { "ru1", 6369, 61 },
+        { "ru2", 6430, 63 },
+        { "ru3", 6493, 63 },
+        { "ru4", 6556, 65 },
+        { "ruwin", 6621, 95 },
+        { "sg", 6716, 49 },
+        { "si", 6765, 40 },
+        { "sk", 6805, 50 },
+        { "slovene", 6855, 122 },
+        { "sr", 6977, 46 },
+        { "sunkeymap", 7023, 174 },
+        { "sv", 7197, 49 },
+        { "sy", 7246, 49 },
+        { "tj", 7295, 38 },
+        { "tm", 7333, 57 },
+        { "tr", 7390, 44 },
+        { "tralt", 7434, 79 },
+        { "trf", 7513, 55 },
+        { "trq", 7568, 59 },
+        { "ttwin", 7627, 90 },
+        { "tw", 7717, 56 },
+        { "ua", 7773, 50 },
+        { "unicode", 7823, 124 },
+        { "uz", 7947, 50 },
+        { "vn", 7997, 51 },
+        { "wangbe", 8048, 126 },
+        { "wangbe2", 8174, 143 },
+        { "windowkeys", 8317, 188 },
+        { NULL, } /* End of array marker */ 
+};