97 lines
2.9 KiB
Go
97 lines
2.9 KiB
Go
// 27 february 2014
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package ui
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import (
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// ...
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)
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/*
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This creates a class goAppDelegate that will be used as the delegate for /everything/. Specifically, it:
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- runs uitask requests (uitask:)
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- handles window close events (windowShouldClose:)
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- handles window resize events (windowDidResize:)
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- handles button click events (buttonClicked:)
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*/
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// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
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// #include <stdlib.h>
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// #include "objc_darwin.h"
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// extern void appDelegate_uitask(id, SEL, id); /* from uitask_darwin.go */
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// extern BOOL appDelegate_windowShouldClose(id, SEL, id);
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// extern void appDelegate_windowDidResize(id, SEL, id);
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// extern void appDelegate_buttonClicked(id, SEL, id);
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import "C"
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var (
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appDelegate C.id
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)
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const (
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_goAppDelegate = "goAppDelegate"
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)
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var (
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_uitask = sel_getUid("uitask:") // used by uitask_darwin.go
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_buttonClicked = sel_getUid("buttonClicked:") // used by sysdata_darwin.go
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)
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var appDelegateSels = []selector{
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selector{"uitask:", uintptr(C.appDelegate_uitask), sel_void_id,
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"performing/dispatching UI events"},
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selector{"windowShouldClose:", uintptr(C.appDelegate_windowShouldClose), sel_bool_id,
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"handling window close button events"},
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selector{"windowDidResize:", uintptr(C.appDelegate_windowDidResize), sel_void_id,
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"handling window resize events"},
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selector{"buttonClicked:", uintptr(C.appDelegate_buttonClicked), sel_bool_id,
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"handling button clicks"},
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}
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func mkAppDelegate() error {
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id, err := makeClass(_goAppDelegate, _NSObject, appDelegateSels,
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"application delegate (handles events)")
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if err != nil {
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return err
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}
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appDelegate = C.objc_msgSend_noargs(id, _new)
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return nil
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}
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//export appDelegate_windowShouldClose
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func appDelegate_windowShouldClose(self C.id, sel C.SEL, win C.id) C.BOOL {
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sysData := getSysData(win)
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sysData.signal()
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return C.BOOL(C.NO) // don't close
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}
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var (
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_object = sel_getUid("object")
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_display = sel_getUid("display")
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)
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//export appDelegate_windowDidResize
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func appDelegate_windowDidResize(self C.id, sel C.SEL, notification C.id) {
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win := C.objc_msgSend_noargs(notification, _object)
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s := getSysData(win)
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wincv := C.objc_msgSend_noargs(win, _contentView) // we want the content view's size, not the window's; selector defined in sysdata_darwin.go
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r := C.objc_msgSend_stret_rect_noargs(wincv, _frame)
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if s.resize != nil {
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// winheight is used here because (0,0) is the bottom-left corner, not the top-left corner
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s.resizes = s.resizes[0:0] // set len to 0 without changing cap
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s.resize(0, 0, int(r.width), int(r.height), &s.resizes)
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for _, s := range s.resizes {
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err := s.sysData.setRect(s.x, s.y, s.width, s.height, int(r.height))
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if err != nil {
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panic("child resize failed: " + err.Error())
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}
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}
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}
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C.objc_msgSend_noargs(win, _display) // redraw everything; TODO only if resize() was called?
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}
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//export appDelegate_buttonClicked
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func appDelegate_buttonClicked(self C.id, sel C.SEL, button C.id) {
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sysData := getSysData(button)
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sysData.signal()
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}
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