620 lines
20 KiB
Racket
620 lines
20 KiB
Racket
#lang racket/base
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(require ffi/unsafe
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ffi/unsafe/define
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ffi/unsafe/atomic
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ffi/unsafe/os-thread
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racket/async-channel
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racket/runtime-path
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racket/port
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data/queue
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json
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racket/string
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racket/path
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"utils.rkt"
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)
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(provide rkt-wv
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rkt-wv-win
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rkt-webview-new-context
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rkt-webview-create
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rkt-webview-close
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rkt-webview-set-ou-token
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rkt-webview-set-url!
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rkt-webview-set-html!
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rkt-webview-run-js
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rkt-webview-call-js
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rkt-webview-move
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rkt-webview-resize
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rkt-webview-show
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rkt-webview-hide
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rkt-webview-show-normal
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rkt-webview-maximize
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rkt-webview-minimize
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rkt-webview-window-state
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rkt-webview-set-title!
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rkt-webview-present
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rkt-webview-exit
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rkt-webview-valid?
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rkt-webview-open-devtools
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rkt-webview-choose-dir
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rkt-webview-file-open
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rkt-webview-file-save
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rkt-webview-messagebox
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rkt-webview-version
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)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; FFI Library
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define lib-type 'release)
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(define os (system-type 'os*))
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(define arch (system-type 'arch))
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(define supported-os '(windows linux))
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(unless (ormap (λ (o) (eq? os o)) supported-os)
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(error (format "OS currently not supported: ~a. Supported: ~a." os supported-os)))
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(define-runtime-path lib-dir "lib")
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(define libraries-to-preload
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(cond
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([eq? os 'windows]
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'(Qt6Core.dll
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Qt6Positioning.dll
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Qt6Gui.dll
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Qt6Widgets.dll
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Qt6Svg.dll
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Qt6Network.dll
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Qt6OpenGL.dll
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Qt6PrintSupport.dll
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Qt6Qml.dll
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Qt6QmlModels.dll
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Qt6QmlWorkerScript.dll
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Qt6QmlMeta.dll
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Qt6Quick.dll
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Qt6QuickWidgets.dll
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Qt6WebChannel.dll
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Qt6WebEngineCore.dll
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Qt6WebEngineWidgets.dll
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))
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([eq? os 'linux]
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'(libQt6XcbQpa
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;libQt6WaylandClient
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;libQt6EglFSDeviceIntegration
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libQt6Core
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libQt6Positioning
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libQt6Gui
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libQt6Widgets
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libQt6Svg
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libQt6Network
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libQt6OpenGL
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libQt6PrintSupport
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libQt6Qml
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libQt6QmlModels
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libQt6QmlWorkerScript
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libQt6QmlMeta
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libQt6Quick
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libQt6QuickWidgets
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libQt6WebChannel
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libQt6WebEngineCore
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libQt6WebEngineWidgets
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))
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)
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)
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(define ffi-library
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(cond
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([eq? os 'windows] 'rktwebview_qt.dll)
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([eq? os 'linux] 'librktwebview_qt.so)
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)
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)
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(define os-lib-dir (build-path lib-dir (symbol->string os) (symbol->string arch)))
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(define (libname lib-symbol)
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(build-path os-lib-dir (symbol->string lib-symbol)))
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; c:\qt\6.10.2\msvc2022_64\bin\windeployqt.exe rktwebview_qt_test.exe
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(define quiet-call #t)
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(set! quiet-call
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(when (or (eq? os 'windows) (eq? os 'linux))
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(putenv "QT_PLUGIN_PATH"
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(path->string (build-path os-lib-dir)))
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(putenv "QTWEBENGINEPROCESS_PATH"
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(path->string (build-path os-lib-dir "QtWebEngineProcess.exe")))
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(putenv "QTWEBENGINE_RESOURCES_PATH"
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(path->string (build-path os-lib-dir "resources")))
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(putenv "QTWEBENGINE_LOCALES_PATH"
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(path->string (build-path os-lib-dir "translations" "qtwebengine_locales")))
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(when (eq? os 'linux)
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(putenv "QT_QPA_PLATFORM" "xcb")
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(putenv "LD_LIBRARY_PATH"
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(string-append
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(path->string (build-path os-lib-dir)) ":"
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(path->string (build-path os-lib-dir "platforms"))
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)
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)
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)
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)
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)
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;;; Preload libraries
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(for-each (λ (lib-symbol)
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(let* ((libn (if (list? lib-symbol) (car lib-symbol) lib-symbol))
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(versions (if (list? lib-symbol) (cons (cadr lib-symbol) '(#f)) (list #f)))
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(load-lib (if (list? lib-symbol)
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(if (eq? (caddr lib-symbol) #f)
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(symbol->string libn)
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(libname libn))
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(libname libn)))
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)
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;(displayln (format "loading ~a" load-lib))
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(ffi-lib load-lib versions)
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)
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)
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libraries-to-preload)
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;;; Actual FFI integration
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(define webview-lib-file (libname ffi-library))
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(define webview-lib
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(with-handlers ([exn:fail?
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(λ (exp)
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(cond
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([eq? os 'linux]
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(error (format
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(string-append "Cannot load ~a.\n"
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"Make sure you installed Qt6on your system\n"
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"e.g. on debian 'sudo apt install libqt6webenginewidgets6'\n"
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"\n"
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"Exception:\n\n~a")
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ffi-library exp)))
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(else (error
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(format "Cannot load ~a for os ~a\n\nException:\n\n~a"
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ffi-library os exp))))
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)
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])
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(ffi-lib webview-lib-file '("6" #f) #:get-lib-dirs (list os-lib-dir))))
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(define-ffi-definer define-rktwebview webview-lib)
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;;; Callbacks from the OS library
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(define callback-box (box '()))
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(define (applier thunk)
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(thunk))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Types / Functions
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define _rkt_result_t
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(_enum '(no_result_yet = -1
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oke = 0
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set_html_failed = 1
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set_navigate_failed = 2
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eval_js_failed = 3
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no_devtools_on_platform = 4
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no_delegate_for_context = 5
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move_failed = 12
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resize_failed = 13
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)
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)
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)
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(define _rkt_window_state_t
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(_enum '(invalid = -1
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normal = 0
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minimized = 1
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maximized = 2
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hidden = 3
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normal_active = 16
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maximized_active = 18
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)
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)
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)
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(define _rkt_data_kind
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(_enum '(version = -1
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event = 2
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js-result = 3
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)
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)
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)
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(define _rkt_messagetype_t
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(_enum '(info = 1
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error = 2
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warning = 3
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yes-no = 4
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oke-cancel = 5
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)
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)
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)
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(define-cstruct _rkt_version_t
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([qt-major _int]
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[qt-minor _int]
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[qt-patch _int]
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[api-major _int]
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[api-minor _int]
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[api-patch _int]
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)
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)
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(define-cstruct _rkt_evt_t
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([w _int]
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[evt _pointer]
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))
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(define-cstruct _rkt_js_result_t
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([result _rkt_result_t]
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[value _pointer]
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))
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(define-cstruct _rkt_data_t
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([kind _rkt_data_kind]
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[data (_union _rkt_version_t _rkt_evt_t _rkt_js_result_t)]
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)
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)
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;RKTWEBVIEW_QT_EXPORT void rkt_webview_init(int &argc, char **argv);
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(define-rktwebview rkt_webview_init
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(_fun -> _void))
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;RKTWEBVIEW_QT_EXPORT void rkt_webview_cleanup();
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(define-rktwebview rkt_webview_cleanup
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(_fun -> _void))
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;RKTWEBVIEW_QT_EXPORT rkt_wv_context_t rkt_webview_new_context(const char *boilerplate_js,
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; const char *optional_server_cert_pem);
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(define-rktwebview rkt_webview_new_context
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(_fun _string/utf-8 _bytes -> _int))
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;RKTWEBVIEW_QT_EXPORT void rkt_webview_process_events(int for_ms);
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(define-rktwebview rkt_webview_process_events
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(_fun _int -> _void))
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;RKTWEBVIEW_QT_EXPORT void rkt_webview_free_data(rkt_data_t *d);
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(define-rktwebview rkt_webview_free_data
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(_fun _rkt_data_t-pointer -> _void))
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;RKTWEBVIEW_QT_EXPORT rkt_data_t *rkt_webview_version();
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(define-rktwebview rkt_webview_version
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(_fun -> _rkt_data_t-pointer))
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; RKTWEBVIEW_QT_EXPORT int rkt_webview_create(rkt_wv_context_t context,
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; rktwebview_t parent,
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; event_cb_t js_event_cb);
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(define-rktwebview rkt_webview_create
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(_fun _int _int
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(_fun #:keep callback-box #:async-apply applier
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_rkt_data_t-pointer -> _void)
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-> _int))
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;RKTWEBVIEW_QT_EXPORT void rkt_webview_close(int wv);
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(define-rktwebview rkt_webview_close
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(_fun _int -> _void))
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;void rkt_webview_set_ou_token(rktwebview_t wv, const char *token)
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(define-rktwebview rkt_webview_set_ou_token
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(_fun _int _string/utf-8 -> _void))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_set_url(int wv, const char *url);
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(define-rktwebview rkt_webview_set_url
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(_fun _int _string/utf-8 -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_set_html(int wv, const char *html);
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(define-rktwebview rkt_webview_set_html
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(_fun _int _string/utf-8 -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_run_js(int wv, const char *js);
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(define-rktwebview rkt_webview_run_js
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(_fun _int _string/utf-8 -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT rkt_js_result_t *rkt_webview_call_js(rktwebview_t wv, const char *js);
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(define-rktwebview rkt_webview_call_js
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(_fun _int _string/utf-8 -> _rkt_data_t-pointer))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_open_devtools(int wv);
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(define-rktwebview rkt_webview_open_devtools
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(_fun _int -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_move(rktwebview_t w, int x, int y);
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(define-rktwebview rkt_webview_move
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(_fun _int _int _int -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_resize(rktwebview_t w, int width, int height);
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(define-rktwebview rkt_webview_resize
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(_fun _int _int _int -> _rkt_result_t))
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(define-syntax def-rkt-wv
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(syntax-rules ()
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((_ name)
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(define-rktwebview name
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(_fun _int -> _rkt_result_t)))))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_hide(rktwebview_t w);
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(def-rkt-wv rkt_webview_hide)
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_show(rktwebview_t w);
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(def-rkt-wv rkt_webview_show)
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_show_normal(rktwebview_t w);
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(def-rkt-wv rkt_webview_show_normal)
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_present(rktwebview_t w);
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(def-rkt-wv rkt_webview_present)
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_maximize(rktwebview_t w);
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(def-rkt-wv rkt_webview_maximize)
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_minimize(rktwebview_t w);
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(def-rkt-wv rkt_webview_minimize)
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;RKTWEBVIEW_QT_EXPORT bool rkt_webview_valid(rktwebview_t wv);
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(define-rktwebview rkt_webview_valid
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(_fun _int -> _int))
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;RKTWEBVIEW_QT_EXPORT window_state_t rkt_webview_window_state(rktwebview_t w);
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(define-rktwebview rkt_webview_window_state
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(_fun _int -> _rkt_window_state_t))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_set_title(rktwebview_t wv, const char *title);
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(define-rktwebview rkt_webview_set_title
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(_fun _int _string/utf-8 -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT rkt_js_result_t *rkt_webview_choose_dir(rktwebview_t w, const char *title, const char *base_dir);
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(define-rktwebview rkt_webview_choose_dir
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(_fun _int _string/utf-8 _string/utf-8 -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT rkt_js_result_t *rkt_webview_file_open(rktwebview_t w, const char *title, const char *base_dir, const char *permitted_exts);
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(define-rktwebview rkt_webview_file_open
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(_fun _int _string/utf-8 _string/utf-8 _string/utf-8 -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT rkt_js_result_t *rkt_webview_file_save(rktwebview_t w, const char *title, const char *base_dir, const char *permitted_exts);
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(define-rktwebview rkt_webview_file_save
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(_fun _int _string/utf-8 _string/utf-8 _string/utf-8 -> _rkt_result_t))
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;RKTWEBVIEW_QT_EXPORT result_t rkt_webview_message_box(
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; rktwebview_t w,
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; const char *title,
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; const char *message,
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; const char *submessage,
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; rkt_messagetype_t type);
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(define-rktwebview rkt_webview_message_box
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(_fun _int _string/utf-8 _string/utf-8 _string/utf-8 _rkt_messagetype_t -> _rkt_result_t))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Initialize and start library
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define process-events 'process)
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(define (stop-event-processing)
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(set! process-events 'stop)
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(while (eq? process-events 'stop)
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(sleep 0.001)))
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(define (start-event-processing)
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(thread (λ ()
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(letrec ((f (λ ()
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(rkt_webview_process_events 1)
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(sleep 0.001)
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(if (eq? process-events 'process)
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(f)
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(begin
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(displayln "Stopping event processing")
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(set! process-events 'stopped)
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'done)))))
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(f)))))
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(rkt_webview_init)
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(set! quiet-call (start-event-processing))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Provided features
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-struct rkt-wv
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(win evt-queue callback [valid #:mutable] [close-callback #:mutable])
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#:transparent
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)
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(define rkt-wv-store (make-hash))
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(define (rkt-process-events handle)
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(if (> (queue-length (rkt-wv-evt-queue handle)) 0)
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(let ((evt (dequeue! (rkt-wv-evt-queue handle))))
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(if (symbol? evt)
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(if (eq? evt 'quit)
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(begin
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(hash-remove! rkt-wv-store (rkt-wv-win handle))
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'quit)
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(begin
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(displayln (format "Unexpected data in event queue: ~a" evt))
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(rkt-process-events handle)))
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(begin
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((rkt-wv-callback handle) handle evt)
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(rkt-process-events handle)))
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)
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'done)
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)
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(define (rkt-webview-new-context boilerplate-js server-cert)
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(rkt_webview_new_context boilerplate-js server-cert))
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(define (rkt-webview-create context parent evt-callback close-callback)
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(let* ((evt-queue (make-queue))
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(parent-win (if (eq? parent #f) 0 (rkt-wv-win parent)))
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)
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(let ((wv (rkt_webview_create context parent-win
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(λ (rkt-evt)
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(let* ((e (union-ref (rkt_data_t-data rkt-evt) 1))
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(evt (cast (rkt_evt_t-evt e) _pointer _string*/utf-8)))
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(rkt_webview_free_data rkt-evt) ; Free event data ASAP
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(enqueue! evt-queue evt)
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)))))
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(let ((handle (make-rkt-wv wv evt-queue evt-callback #t close-callback)))
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(thread (λ ()
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(sleep 1)
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(letrec ((f (λ ()
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(let ((r (rkt-process-events handle)))
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(if (eq? r 'quit)
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(begin
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|
(set-rkt-wv-valid! handle #f)
|
|
(displayln "Quitting event loop")
|
|
'done)
|
|
(begin
|
|
;(displayln "Waiting for events.")
|
|
(sleep 0.01)
|
|
(f)))))))
|
|
(f))))
|
|
(hash-set! rkt-wv-store (rkt-wv-win handle) handle)
|
|
handle))))
|
|
|
|
(define (rkt-webview-close handle)
|
|
(rkt_webview_close (rkt-wv-win handle))
|
|
(enqueue! (rkt-wv-evt-queue handle) 'quit)
|
|
((rkt-wv-close-callback handle))
|
|
#t)
|
|
|
|
(define (rkt-webview-set-ou-token handle token)
|
|
(rkt_webview_set_ou_token (rkt-wv-win handle) token)
|
|
#t)
|
|
|
|
(define (rkt-webview-set-url! wv url)
|
|
(rkt_webview_set_url (rkt-wv-win wv) url))
|
|
|
|
(define (rkt-webview-set-html! wv html)
|
|
(rkt_webview_set_html (rkt-wv-win wv) html))
|
|
|
|
(define (rkt-webview-set-title! wv title)
|
|
(rkt_webview_set_title (rkt-wv-win wv) title))
|
|
|
|
(define (rkt-webview-run-js wv js)
|
|
(rkt_webview_run_js (rkt-wv-win wv) js))
|
|
|
|
(define (rkt-webview-call-js wv js)
|
|
(let* ((d (rkt_webview_call_js (rkt-wv-win wv) js))
|
|
(r (union-ref (rkt_data_t-data d) 2))
|
|
(value (cast (rkt_js_result_t-value r) _pointer _string*/utf-8))
|
|
(result (rkt_js_result_t-result r)))
|
|
(rkt_webview_free_data d)
|
|
(list result value)))
|
|
|
|
(define (rkt-webview-resize wv w h)
|
|
(rkt_webview_resize (rkt-wv-win wv) w h))
|
|
|
|
(define (rkt-webview-move wv x y)
|
|
(rkt_webview_move (rkt-wv-win wv) x y))
|
|
|
|
(define-syntax def-rkt-wrapper-wv
|
|
(syntax-rules ()
|
|
((_ name c-name)
|
|
(define (name wv)
|
|
(c-name (rkt-wv-win wv))))))
|
|
|
|
(def-rkt-wrapper-wv rkt-webview-show rkt_webview_show)
|
|
(def-rkt-wrapper-wv rkt-webview-hide rkt_webview_hide)
|
|
(def-rkt-wrapper-wv rkt-webview-show-normal rkt_webview_show_normal)
|
|
(def-rkt-wrapper-wv rkt-webview-minimize rkt_webview_minimize)
|
|
(def-rkt-wrapper-wv rkt-webview-maximize rkt_webview_maximize)
|
|
(def-rkt-wrapper-wv rkt-webview-present rkt_webview_present)
|
|
(def-rkt-wrapper-wv rkt-webview-window-state rkt_webview_window_state)
|
|
|
|
(define (rkt-webview-open-devtools wv)
|
|
(rkt_webview_open_devtools (rkt-wv-win wv)))
|
|
|
|
(define (rkt-webview-choose-dir wv title base-dir)
|
|
(rkt_webview_choose_dir (rkt-wv-win wv) title base-dir))
|
|
; (let* ((d (rkt_webview_choose_dir (rkt-wv-win wv) title base-dir))
|
|
; (r (union-ref (rkt_data_t-data d) 2))
|
|
; (value (cast (rkt_js_result_t-value r) _pointer _string*/utf-8))
|
|
; (result (rkt_js_result_t-result r)))
|
|
; (rkt_webview_free_data d)
|
|
; (list result value)))
|
|
|
|
(define (rkt-webview-file-open wv title base-dir permitted-exts)
|
|
(rkt_webview_file_open (rkt-wv-win wv) title base-dir permitted-exts))
|
|
; (let* ((d (rkt_webview_file_open (rkt-wv-win wv) title base-dir permitted-exts))
|
|
; (r (union-ref (rkt_data_t-data d) 2))
|
|
; (value (cast (rkt_js_result_t-value r) _pointer _string*/utf-8))
|
|
; (result (rkt_js_result_t-result r)))
|
|
; (rkt_webview_free_data d)
|
|
; (list result value)))
|
|
|
|
(define (rkt-webview-file-save wv title base-dir permitted-exts)
|
|
(rkt_webview_file_save (rkt-wv-win wv) title base-dir permitted-exts))
|
|
; (let* ((d (rkt_webview_file_save (rkt-wv-win wv) title base-dir permitted-exts))
|
|
; (r (union-ref (rkt_data_t-data d) 2))
|
|
; (value (cast (rkt_js_result_t-value r) _pointer _string*/utf-8))
|
|
; (result (rkt_js_result_t-result r)))
|
|
; (rkt_webview_free_data d)
|
|
; (list result value)))
|
|
|
|
(define (rkt-webview-messagebox wv title message submessage type)
|
|
(rkt_webview_message_box (rkt-wv-win wv) title message submessage type))
|
|
|
|
(define (rkt-webview-version)
|
|
(let ((d (rkt_webview_version)))
|
|
(let ((v (union-ref (rkt_data_t-data d) 0)))
|
|
(let ((qt-major (rkt_version_t-qt-major v))
|
|
(qt-minor (rkt_version_t-qt-minor v))
|
|
(qt-patch (rkt_version_t-qt-patch v))
|
|
(api-major (rkt_version_t-api-major v))
|
|
(api-minor (rkt_version_t-api-minor v))
|
|
(api-patch (rkt_version_t-api-patch v))
|
|
)
|
|
(rkt_webview_free_data d)
|
|
(list (list 'webview-c-api api-major api-minor api-patch)
|
|
(list 'qt qt-major qt-minor qt-patch))
|
|
)
|
|
)
|
|
)
|
|
)
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; Administration
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(define (rkt-webview-valid? wv)
|
|
(if (eq? (rkt-wv-valid wv) #f)
|
|
#f
|
|
(if (= (rkt_webview_valid (rkt-wv-win wv)) 0)
|
|
#f
|
|
#t)))
|
|
|
|
(define (rkt-webview-exit)
|
|
(let ((open-windows (hash->list rkt-wv-store)))
|
|
(for-each (λ (kv)
|
|
(let ((win (car kv))
|
|
(handle (cdr kv)))
|
|
(rkt-webview-close handle)))
|
|
open-windows))
|
|
(stop-event-processing)
|
|
(rkt_webview_cleanup)
|
|
)
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; Cleanup on exit
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(set! quiet-call
|
|
(plumber-add-flush! (current-plumber)
|
|
(λ (handle)
|
|
(rkt-webview-exit))))
|
|
|
|
|
|
|