A scalable draggable custom ButtonView, you can set the maximum and minimum width and height.

SignatureViewTest
.................\.DS_Store
__MACOSX
........\SignatureViewTest
........\.................\._.DS_Store
SignatureViewTest\SignatureViewTest
.................\.................\AppDelegate.h
__MACOSX\SignatureViewTest\SignatureViewTest
........\.................\.................\._AppDelegate.h
SignatureViewTest\SignatureViewTest\AppDelegate.m
__MACOSX\SignatureViewTest\SignatureViewTest\._AppDelegate.m
SignatureViewTest\SignatureViewTest\Assets.xcassets
.................\.................\...............\AppIcon.appiconset
.................\.................\...............\..................\Contents.json
__MACOSX\SignatureViewTest\SignatureViewTest\Assets.xcassets
........\.................\.................\...............\AppIcon.appiconset
........\.................\.................\...............\..................\._Contents.json
SignatureViewTest\SignatureViewTest\Base.lproj
.................\.................\..........\LaunchScreen.storyboard
__MACOSX\SignatureViewTest\SignatureViewTest\Base.lproj
........\.................\.................\..........\._LaunchScreen.storyboard
SignatureViewTest\SignatureViewTest\Base.lproj\Main.storyboard
__MACOSX\SignatureViewTest\SignatureViewTest\Base.lproj\._Main.storyboard
SignatureViewTest\SignatureViewTest\Info.plist
.................\.................\main.m
__MACOSX\SignatureViewTest\SignatureViewTest\._main.m
SignatureViewTest\SignatureViewTest\SignatureView.h
__MACOSX\SignatureViewTest\SignatureViewTest\._SignatureView.h
SignatureViewTest\SignatureViewTest\SignatureView.m
__MACOSX\SignatureViewTest\SignatureViewTest\._SignatureView.m
SignatureViewTest\SignatureViewTest\ViewController.h
__MACOSX\SignatureViewTest\SignatureViewTest\._ViewController.h
SignatureViewTest\SignatureViewTest\ViewController.m
__MACOSX\SignatureViewTest\SignatureViewTest\._ViewController.m
SignatureViewTest\SignatureViewTest.xcodeproj
.................\...........................\project.pbxproj
.................\...........................\project.xcworkspace
.................\...........................\...................\contents.xcworkspacedata
.................\...........................\...................\xcuserdata
.................\...........................\...................\..........\noahlong.xcuserdatad
.................\...........................\...................\..........\....................\UserInterfaceState.xcuserstate
.................\...........................\xcuserdata
.................\...........................\..........\noahlong.xcuserdatad
.................\...........................\..........\....................\xcdebugger
.................\...........................\..........\....................\..........\Breakpoints_v2.xcbkptlist
.................\...........................\..........\....................\xcschemes
.................\...........................\..........\....................\.........\SignatureViewTest.xcscheme
.................\...........................\..........\....................\.........\xcschememanagement.plist

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