484 lines
13 KiB
Go
484 lines
13 KiB
Go
// 1 march 2014
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package ui
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import (
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"fmt"
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"unsafe"
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"sync"
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)
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// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
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// #include "objc_darwin.h"
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import "C"
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type sysData struct {
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cSysData
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id C.id
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}
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type classData struct {
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make func(parentWindow C.id, alternate bool) C.id
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show func(what C.id)
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hide func(what C.id)
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settextsel C.SEL
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textsel C.SEL
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alttextsel C.SEL
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append func(id C.id, what string, alternate bool)
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insertBefore func(id C.id, what string, before int, alternate bool)
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selIndex func(id C.id) int
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selIndices func(id C.id) []int
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selTexts func(id C.id) []string
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delete func(id C.id, index int)
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len func(id C.id) int
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}
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var (
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_NSWindow = objc_getClass("NSWindow")
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_NSButton = objc_getClass("NSButton")
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_NSPopUpButton = objc_getClass("NSPopUpButton")
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_NSComboBox = objc_getClass("NSComboBox")
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_NSTextField = objc_getClass("NSTextField")
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_NSSecureTextField = objc_getClass("NSSecureTextField")
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_NSProgressIndicator = objc_getClass("NSProgressIndicator")
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_initWithContentRect = sel_getUid("initWithContentRect:styleMask:backing:defer:")
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_initWithFrame = sel_getUid("initWithFrame:")
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_makeKeyAndOrderFront = sel_getUid("makeKeyAndOrderFront:")
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_orderOut = sel_getUid("orderOut:")
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_setHidden = sel_getUid("setHidden:")
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_setTitle = sel_getUid("setTitle:")
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_setStringValue = sel_getUid("setStringValue:")
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_setFrame = sel_getUid("setFrame:")
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_state = sel_getUid("state")
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_title = sel_getUid("title")
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_stringValue = sel_getUid("stringValue")
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_frame = sel_getUid("frame")
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_setFrameDisplay = sel_getUid("setFrame:display:")
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_setBezelStyle = sel_getUid("setBezelStyle:")
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_setTarget = sel_getUid("setTarget:")
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_setAction = sel_getUid("setAction:")
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_contentView = sel_getUid("contentView")
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_addSubview = sel_getUid("addSubview:")
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_setButtonType = sel_getUid("setButtonType:")
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_initWithFramePullsDown = sel_getUid("initWithFrame:pullsDown:")
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_setUsesDataSource = sel_getUid("setUsesDataSource:")
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_addItemWithTitle = sel_getUid("addItemWithTitle:")
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_insertItemWithTitleAtIndex = sel_getUid("insertItemWithTitle:atIndex:")
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_removeItemAtIndex = sel_getUid("removeItemAtIndex:")
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_titleOfSelectedItem = sel_getUid("titleOfSelectedItem")
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_indexOfSelectedItem = sel_getUid("indexOfSelectedItem")
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_addItemWithObjectValue = sel_getUid("addItemWithObjectValue:")
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_insertItemWithObjectValueAtIndex = sel_getUid("insertItemWithObjectValue:atIndex:")
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_setEditable = sel_getUid("setEditable:")
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_setBordered = sel_getUid("setBordered:")
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_setDrawsBackground = sel_getUid("setDrawsBackground:")
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_setStyle = sel_getUid("setStyle:")
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_setControlSize = sel_getUid("setControlSize:")
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_setIndeterminate = sel_getUid("setIndeterminate:")
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_setDoubleValue = sel_getUid("setDoubleValue:")
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_numberOfItems = sel_getUid("numberOfItems")
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)
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func addControl(parentWindow C.id, control C.id) {
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windowView := C.objc_msgSend_noargs(parentWindow, _contentView)
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C.objc_msgSend_id(windowView, _addSubview, control)
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}
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func controlShow(what C.id) {
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C.objc_msgSend_bool(what, _setHidden, C.BOOL(C.NO))
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}
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func controlHide(what C.id) {
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C.objc_msgSend_bool(what, _setHidden, C.BOOL(C.YES))
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}
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var classTypes = [nctypes]*classData{
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c_window: &classData{
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make: func(parentWindow C.id, alternate bool) C.id {
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const (
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NSBorderlessWindowMask = 0
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NSTitledWindowMask = 1 << 0
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NSClosableWindowMask = 1 << 1
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NSMiniaturizableWindowMask = 1 << 2
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NSResizableWindowMask = 1 << 3
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NSTexturedBackgroundWindowMask = 1 << 8
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)
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// we have to specify a content rect to start; it will be overridden soon though
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win := objc_alloc(_NSWindow)
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win = objc_msgSend_rect_uint_uint_bool(win,
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_initWithContentRect,
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0, 0, 100, 100,
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NSTitledWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSResizableWindowMask,
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2, // NSBackingStoreBuffered - the only backing store method that Apple says we should use (the others are legacy)
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C.BOOL(C.YES)) // defer creation of device until we show the window
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objc_setDelegate(win, appDelegate)
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return win
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},
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show: func(what C.id) {
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C.objc_msgSend_id(what, _makeKeyAndOrderFront, what)
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},
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hide: func(what C.id) {
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C.objc_msgSend_id(what, _orderOut, what)
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},
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settextsel: _setTitle,
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textsel: _title,
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},
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c_button: &classData{
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make: func(parentWindow C.id, alternate bool) C.id {
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button := objc_alloc(_NSButton)
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// NSControl requires that we specify a frame; dummy frame for now
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button = objc_msgSend_rect(button, _initWithFrame,
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0, 0, 100, 100)
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objc_msgSend_uint(button, _setBezelStyle, 1) // NSRoundedBezelStyle
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C.objc_msgSend_id(button, _setTarget, appDelegate)
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C.objc_msgSend_sel(button, _setAction, _buttonClicked)
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addControl(parentWindow, button)
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return button
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},
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show: controlShow,
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hide: controlHide,
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settextsel: _setTitle,
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textsel: _title,
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},
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c_checkbox: &classData{
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make: func(parentWindow C.id, alternate bool) C.id {
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checkbox := objc_alloc(_NSButton)
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checkbox = objc_msgSend_rect(checkbox, _initWithFrame,
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0, 0, 100, 100)
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objc_msgSend_uint(checkbox, _setButtonType, 3) // NSSwitchButton
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addControl(parentWindow, checkbox)
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return checkbox
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},
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show: controlShow,
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hide: controlHide,
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settextsel: _setTitle,
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textsel: _title,
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},
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c_combobox: &classData{
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make: func(parentWindow C.id, alternate bool) C.id {
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var combobox C.id
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if alternate {
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combobox = objc_alloc(_NSComboBox)
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combobox = objc_msgSend_rect(combobox, _initWithFrame,
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0, 0, 100, 100)
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C.objc_msgSend_bool(combobox, _setUsesDataSource, C.BOOL(C.NO))
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} else {
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combobox = objc_alloc(_NSPopUpButton)
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combobox = objc_msgSend_rect_bool(combobox, _initWithFramePullsDown,
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0, 0, 100, 100,
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C.BOOL(C.NO))
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}
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addControl(parentWindow, combobox)
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return combobox
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},
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show: controlShow,
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hide: controlHide,
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// TODO setText
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textsel: _titleOfSelectedItem,
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alttextsel: _stringValue,
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append: func(id C.id, what string, alternate bool) {
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str := toNSString(what)
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if alternate {
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C.objc_msgSend_id(id, _addItemWithObjectValue, str)
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} else {
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C.objc_msgSend_id(id, _addItemWithTitle, str)
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}
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},
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insertBefore: func(id C.id, what string, before int, alternate bool) {
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str := toNSString(what)
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if alternate {
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C.objc_msgSend_id_int(id, _insertItemWithObjectValueAtIndex, str, C.intptr_t(before))
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} else {
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C.objc_msgSend_id_int(id, _insertItemWithTitleAtIndex, str, C.intptr_t(before))
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}
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},
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selIndex: func(id C.id) int {
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return int(C.objc_msgSend_intret_noargs(id, _indexOfSelectedItem))
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},
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delete: func(id C.id, index int) {
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C.objc_msgSend_int(id, _removeItemAtIndex, C.intptr_t(index))
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},
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len: func(id C.id) int {
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return int(C.objc_msgSend_intret_noargs(id, _numberOfItems))
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},
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},
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c_lineedit: &classData{
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make: func(parentWindow C.id, alternate bool) C.id {
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var lineedit C.id
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if alternate {
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lineedit = objc_alloc(_NSSecureTextField)
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} else {
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lineedit = objc_alloc(_NSTextField)
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}
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lineedit = objc_msgSend_rect(lineedit, _initWithFrame,
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0, 0, 100, 100)
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addControl(parentWindow, lineedit)
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return lineedit
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},
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show: controlShow,
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hide: controlHide,
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settextsel: _setStringValue,
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textsel: _stringValue,
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alttextsel: _stringValue,
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},
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c_label: &classData{
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make: func(parentWindow C.id, alternate bool) C.id {
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label := objc_alloc(_NSTextField)
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label = objc_msgSend_rect(label, _initWithFrame,
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0, 0, 100, 100)
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C.objc_msgSend_bool(label, _setEditable, C.BOOL(C.NO))
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C.objc_msgSend_bool(label, _setBordered, C.BOOL(C.NO))
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C.objc_msgSend_bool(label, _setDrawsBackground, C.BOOL(C.NO))
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// TODO others?
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addControl(parentWindow, label)
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return label
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},
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show: controlShow,
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hide: controlHide,
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settextsel: _setStringValue,
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textsel: _stringValue,
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},
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c_listbox: &classData{
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make: makeListbox,
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show: controlShow,
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hide: controlHide,
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append: appendListbox,
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insertBefore: insertListboxBefore,
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selIndices: selectedListboxIndices,
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selTexts: selectedListboxTexts,
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delete: deleteListbox,
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len: listboxLen,
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},
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c_progressbar: &classData{
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make: func(parentWindow C.id, alternate bool) C.id {
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pbar := objc_alloc(_NSProgressIndicator)
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pbar = objc_msgSend_rect(pbar, _initWithFrame,
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0, 0, 100, 100)
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// TODO really int?
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C.objc_msgSend_int(pbar, _setStyle, 0) // NSProgressIndicatorBarStyle
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objc_msgSend_uint(pbar, _setControlSize, 0) // NSRegularControlSize
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C.objc_msgSend_bool(pbar, _setIndeterminate, C.BOOL(C.NO))
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addControl(parentWindow, pbar)
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return pbar
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},
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show: controlShow,
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hide: controlHide,
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},
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}
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// I need to access sysData from appDelegate, but appDelegate doesn't store any data. So, this.
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var (
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sysdatas = make(map[C.id]*sysData)
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sysdatalock sync.Mutex
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)
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func addSysData(key C.id, value *sysData) {
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sysdatalock.Lock()
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sysdatas[key] = value
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sysdatalock.Unlock()
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}
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func getSysData(key C.id) *sysData {
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sysdatalock.Lock()
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defer sysdatalock.Unlock()
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v, ok := sysdatas[key]
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if !ok {
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panic(fmt.Errorf("internal error: getSysData(%v) unknown", key))
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}
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return v
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}
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func (s *sysData) make(initText string, window *sysData) error {
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var parentWindow C.id
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ct := classTypes[s.ctype]
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if window != nil {
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parentWindow = window.id
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}
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ret := make(chan C.id)
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defer close(ret)
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uitask <- func() {
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ret <- ct.make(parentWindow, s.alternate)
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}
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s.id = <-ret
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err := s.setText(initText)
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if err != nil {
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return fmt.Errorf("error setting initial text of new window/control: %v", err)
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}
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addSysData(s.id, s)
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return nil
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}
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// used for Windows; nothing special needed elsewhere
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func (s *sysData) firstShow() error {
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s.show()
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return nil
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}
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func (s *sysData) show() {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].show(s.id)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) hide() {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].hide(s.id)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) setText(text string) {
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var zeroSel C.SEL
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if classTypes[s.ctype].settextsel == zeroSel { // does not have concept of text
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return nil
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}
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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C.objc_msgSend_id(s.id, classTypes[s.ctype].settextsel, toNSString(text))
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) setRect(x int, y int, width int, height int, winheight int) error {
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// winheight - y because (0,0) is the bottom-left corner of the window and not the top-left corner
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// (winheight - y) - height because (x, y) is the bottom-left corner of the control and not the top-left
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objc_msgSend_rect(s.id, _setFrame, x, (winheight - y) - height, width, height)
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return nil
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}
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func (s *sysData) isChecked() bool {
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const (
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NSOnState = 1
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)
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ret := make(chan bool)
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defer close(ret)
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uitask <- func() {
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k := C.objc_msgSend_noargs(s.id, _state)
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ret <- uintptr(unsafe.Pointer(k)) == NSOnState
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}
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return <-ret
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}
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func (s *sysData) text() string {
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sel := classTypes[s.ctype].textsel
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if s.alternate {
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sel = classTypes[s.ctype].alttextsel
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}
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ret := make(chan string)
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defer close(ret)
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uitask <- func() {
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str := C.objc_msgSend_noargs(s.id, sel)
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ret <- fromNSString(str)
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}
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return <-ret
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}
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func (s *sysData) append(what string) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].append(s.id, what, s.alternate)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) insertBefore(what string, before int) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].insertBefore(s.id, what, before, s.alternate)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) selectedIndex() int {
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ret := make(chan int)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].selIndex(s.id)
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}
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return <-ret
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}
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func (s *sysData) selectedIndices() []int {
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ret := make(chan []int)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].selIndices(s.id)
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}
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return <-ret
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}
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func (s *sysData) selectedTexts() []string {
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ret := make(chan []string)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].selTexts(s.id)
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}
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return <-ret
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}
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func (s *sysData) setWindowSize(width int, height int) error {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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// we need to get the top left point
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r := C.objc_msgSend_stret_rect_noargs(s.id, _frame)
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objc_msgSend_rect_bool(s.id, _setFrameDisplay,
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int(r.x), int(r.y), width, height,
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C.BOOL(C.YES)) // TODO set to NO to prevent subviews from being redrawn before they are resized?
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ret <- struct{}{}
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}
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<-ret
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return nil
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}
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func (s *sysData) delete(index int) error {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].delete(s.id, index)
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ret <- struct{}{}
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}
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<-ret
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return nil
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}
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func (s *sysData) setProgress(percent int) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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C.objc_msgSend_double(s.id, _setDoubleValue, C.double(percent))
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) len() int {
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ret := make(chan int)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].len(s.id)
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}
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return <-ret
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}
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