core-initrd: un-vendor UC plymouth theme

As we will keep any difference between initramfs in the snapd repo, it
does not make sense anymore to keep the plymouth theme in a separate
repository.

core-initrd/latest/debian/rules

@@ -11,9 +11,9 @@ override_dh_auto_install:
 	mkdir debian/tmp
 	cp -ar factory/* debian/tmp
 
-	# splash functionality
+# splash functionality
 	mkdir -p debian/tmp/usr/share/plymouth/themes/
-	cp -a vendor/plymouth-theme-ubuntu-core/ubuntu-core \
+	cp -a plymouth-theme-ubuntu-core/ubuntu-core \
 		debian/tmp/usr/share/plymouth/themes/
 	mkdir -p debian/tmp/usr/share/fonts/
 	cp /usr/share/fonts/truetype/ubuntu/Ubuntu-R.ttf \
@@ -30,17 +30,16 @@ ifeq ($(DEB_HOST_ARCH),amd64)
 endif
 
 override_dh_clean:
-	# Include ubuntu-core plymouth theme in sources
-	[ -d vendor/plymouth-theme-ubuntu-core ] || ( mkdir -p vendor; cd vendor; \
-		git clone https://github.com/snapcore/plymouth-theme-ubuntu-core )
 	dh_clean
 
 override_dh_python3:
 	dh_python3 --no-ext-rename
 
 override_dh_fixperms:
 	dh_fixperms -Xusr/lib/ubuntu-core-initramfs/main
+
 override_dh_makeshlibs:
 	dh_makeshlibs -Xusr/lib/ubuntu-core-initramfs/main
+
 override_dh_shlibdeps:
 	dh_shlibdeps -Xusr/lib/ubuntu-core-initramfs/main

core-initrd/latest/plymouth-theme-ubuntu-core/README.md

@@ -0,0 +1 @@
+The ubuntu-core theme for plymouth was originally in https://github.com/canonical/plymouth-theme-ubuntu-core

core-initrd/latest/plymouth-theme-ubuntu-core/copyright

@@ -0,0 +1,32 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: Plymouth
+Upstream-Contact: [email protected]
+Source: http://www.freedesktop.org/software/plymouth/releases/
+
+Files: *
+Copyright: 2022 Canonical Ltd.
+License: GPL-2+
+
+Files: ubuntu-core/throbber-*.png
+Copyright: 2006-2008 Red Hat, Inc.
+           2007-2008 Ray Strode <[email protected]>
+           2003 University of Southern California
+           2003 Charlie Brej <[email protected]>
+License: GPL-2+
+
+License: GPL-2+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 2 of the License, or
+ (at your option) any later version.
+ .
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ .
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ .
+ The complete text of the GNU General Public License
+ can be found in /usr/share/common-licenses/GPL-2 file.

core-initrd/latest/plymouth-theme-ubuntu-core/ubuntu-core/ubuntu-core.plymouth

@@ -0,0 +1,8 @@
+[Plymouth Theme]
+Name=Ubuntu Core
+Description=The default theme for Ubuntu Core.
+ModuleName=script
+
+[script]
+ImageDir=/
+ScriptFile=/usr/share/plymouth/themes/ubuntu-core/ubuntu-core.script

core-initrd/latest/plymouth-theme-ubuntu-core/ubuntu-core/ubuntu-core.script

@@ -0,0 +1,120 @@
+#  ubuntu-core.script - boot splash plugin
+# 
+#  Copyright (C) 2022 Canonical Ltd.
+# 
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2, or (at your option)
+#  any later version.
+# 
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+# 
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#  02111-1307, USA.
+
+fun WriteText(text, colour)
+{
+    # Ubuntu Font
+    font = "Ubuntu, sans-serif 16";
+    font_alignment = "center";
+    image = Image.Text(text, colour.red, colour.green, colour.blue, colour.alpha,
+                       font, font_alignment);
+}
+
+fun message_callback(message)
+{
+    text_img = WriteText(message, white);
+    # Text centered in last quarter of the screen
+    text.x = Window.GetX() + (Window.GetWidth() - text_img.GetWidth())/2;
+    text.y = Window.GetY() + 7*Window.GetHeight()/8 - text_img.GetHeight() - 10;
+    text_sprite.SetImage(text_img);
+    # x,y,z position
+    text_sprite.SetPosition(text.x, text.y, 2000);
+
+    # debug_img = Image.Text("Width: " + text_img.GetWidth(),
+    #                  white.red, white.green, white.blue, white.alpha);
+    # debug_sprite.SetImage(debug_img);
+    # debug_sprite.SetPosition(Window.GetX()+10,Window.GetY() + 10, 2000);
+}
+
+# Called 50 times every second.
+# NOTE: if a refresh function is not set, Plymouth doesn't seem to be able to
+#       update the screen correctly. This happens, for instance, when getty
+#       takes control of the screen. We need to update with the splash at
+#       that moment (also, this produces a blink). Calling again SetImage
+#       is needed for the update to happen.
+fun refresh_callback()
+{
+    logo.sprite.SetImage(logo.image);
+    logo.sprite.SetPosition(logo.x, logo.y, logo.z);
+    logo.sprite.SetOpacity(1);
+
+    # Spinner
+    if (++spin.frame_cnt % spin.refresh_rate == 0) {
+        if (++spin.idx == 31)
+            spin.idx = 1;
+        spin.image = Image(spin.base_name + spin.idx + ".png");
+    }
+    spin.sprite.SetImage(spin.image);
+    spin.sprite.SetPosition(spin.x, spin.y, spin.z);
+    spin.sprite.SetOpacity(1);
+
+    if (uc_logo.raw_image != NULL) {
+        uc_logo.sprite.SetImage(uc_logo.image);
+        uc_logo.sprite.SetPosition(uc_logo.x, uc_logo.y, uc_logo.z);
+        uc_logo.sprite.SetOpacity(1);
+    }
+}
+
+white.red = 1.0;
+white.green = 1.0;
+white.blue = 1.0;
+
+# Warning: Sprites need to be global variables, apparently
+text_sprite = Sprite();
+#debug_sprite = Sprite();
+
+logo.raw_image = Image("run/mnt/gadget/splash/vendor-logo.png");
+uc_logo.raw_image = NULL;
+if (logo.raw_image == NULL) {
+    logo.raw_image = Image("usr/share/plymouth/themes/ubuntu-core/ubuntu-core.png");
+} else {
+    uc_logo.raw_image = Image("usr/share/plymouth/themes/ubuntu-core/ubuntu-core.png");
+    uc_logo_w = Window.GetWidth()/5;
+    uc_logo.image = uc_logo.raw_image.Scale(uc_logo_w,
+                        uc_logo_w*uc_logo.raw_image.GetHeight()/uc_logo.raw_image.GetWidth());
+    uc_logo.sprite = Sprite();
+    # Logo touching the top and in the last 8th of the screen
+    uc_logo.x = Window.GetX() + Window.GetWidth()/2 - uc_logo.image.GetWidth()/2;
+    uc_logo.y = Window.GetY() + 7*Window.GetHeight()/8;
+    uc_logo.z = 100;
+}
+
+logo_w = 2*Window.GetWidth()/3;
+logo.image = logo.raw_image.Scale(logo_w, logo_w*logo.raw_image.GetHeight()/logo.raw_image.GetWidth());
+logo.sprite = Sprite();
+# Logo right on top of the low-half of the screen
+logo.x = Window.GetX() + Window.GetWidth()/2 - logo.image.GetWidth()/2;
+logo.y = Window.GetY() + Window.GetHeight()/2 - logo.image.GetHeight();
+logo.z = 100;
+
+spin.base_name = "usr/share/plymouth/themes/ubuntu-core/throbber-";
+spin.idx = 1;
+spin.refresh_rate = 5;
+spin.frame_cnt = 0;
+spin.image = Image(spin.base_name + spin.idx + ".png");
+spin.sprite = Sprite();
+# Spin between third and fourth quarters
+spin.x = Window.GetX() + Window.GetWidth()/2 - spin.image.GetWidth()/2;
+spin.y = Window.GetY() + 3*Window.GetHeight()/4 - spin.image.GetHeight()/2;
+spin.z = 100;
+
+refresh_callback();
+
+Plymouth.SetMessageFunction(message_callback);
+Plymouth.SetRefreshFunction(refresh_callback);