From 12dbae104949d9f649a5a5d0f6f1b6051f7a95bc Mon Sep 17 00:00:00 2001
From: TAO TANG <tang.tao.cn@gmail.com>
Date: Fri, 10 Oct 2025 17:50:09 +0800
Subject: [PATCH 1/2] Fix GLib::GObject::CRITICAL on out-of-range zoom factor
 (Gtk3::ImageView)

The zoom factor have a minimum value 0.001 by default. To fit high-resolution
display (4K/8K), a minimum value 0.0001 is perferred. Or boring CRITICAL
messages are frequently printed.

This commit gets the minimum value tuned for ImageView used by screenshot tabs.

Fix shutter-project/shutter#774
---
 bin/shutter | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/bin/shutter b/bin/shutter
index 4528c5a4..ea84c9f3 100755
--- a/bin/shutter
+++ b/bin/shutter
@@ -57,6 +57,23 @@ BEGIN {
 	);
 }
 
+package Gtk3::ImageViewCustom;
+
+use Gtk3::ImageView;
+use Glib::Object::Subclass Gtk3::ImageView::, properties => [
+	# override minium zoom
+	Glib::ParamSpec->float(
+		'zoom',		#name
+		'zoom',		#nick
+		'zoom level',	#blurb
+		0.0001,		#minium, tuned to fit 4K/8K modern display
+		100,		#maximum
+		1.0,		#default
+		[qw/readable writable/],
+	),
+];
+
+
 package Shutter::App;
 
 #Deal with encoding problem
@@ -71,7 +88,6 @@ use Pango;
 use Glib qw/TRUE FALSE/;
 use Gtk3 '-init';
 use Glib::Object::Subclass qw/Gtk3::Application/;
-use Gtk3::ImageView 10;
 
 #filename parsing
 use POSIX qw/ strftime /;
@@ -4428,7 +4444,7 @@ sub STARTUP {
 		unless ($is_all) {
 
 			#Gtk2::ImageView - empty at first
-			$session_screens{$key}->{'image'} = Gtk3::ImageView->new();
+			$session_screens{$key}->{'image'} = Gtk3::ImageViewCustom->new();
 			#$session_screens{$key}->{'image'}->set_show_frame(FALSE);
 			$session_screens{$key}->{'image'}->set_fitting(TRUE);
 			$session_screens{$key}->{'image'}->get_style_context->add_provider($css_provider_alpha, 0);

From c202feb985f844d61f23badd1051dada00b50792 Mon Sep 17 00:00:00 2001
From: TAO TANG <tang.tao.cn@gmail.com>
Date: Sat, 11 Oct 2025 23:08:23 +0800
Subject: [PATCH 2/2] update ImageView version check for
 shutter-project/shutter#775

---
 bin/shutter | 2 +-
 cpanfile    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/bin/shutter b/bin/shutter
index ea84c9f3..e534963b 100755
--- a/bin/shutter
+++ b/bin/shutter
@@ -59,7 +59,7 @@ BEGIN {
 
 package Gtk3::ImageViewCustom;
 
-use Gtk3::ImageView;
+use Gtk3::ImageView 10;
 use Glib::Object::Subclass Gtk3::ImageView::, properties => [
 	# override minium zoom
 	Glib::ParamSpec->float(
diff --git a/cpanfile b/cpanfile
index 58342d08..656b95e4 100644
--- a/cpanfile
+++ b/cpanfile
@@ -1,7 +1,7 @@
 requires "Gtk3";
 requires "Pango";
 requires "Glib";
-requires "Gtk3::ImageView";
+requires "Gtk3::ImageView", ">= 10";
 requires "Number::Bytes::Human";
 requires "XML::Simple";
 requires "Net::DBus";