496 строки
12 KiB
Go
496 строки
12 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin
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package app
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// Simple on-screen app debugging for OS X. Not an officially supported
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// development target for apps, as screens with mice are very different
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// than screens with touch panels.
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/*
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#cgo CFLAGS: -x objective-c
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#cgo LDFLAGS: -framework Cocoa -framework OpenGL
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#import <Carbon/Carbon.h> // for HIToolbox/Events.h
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#import <Cocoa/Cocoa.h>
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#include <pthread.h>
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void runApp(void);
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void stopApp(void);
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void makeCurrentContext(GLintptr);
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uint64 threadID();
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*/
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import "C"
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import (
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"log"
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"runtime"
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"sync"
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"golang.org/x/mobile/event/key"
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"golang.org/x/mobile/event/lifecycle"
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"golang.org/x/mobile/event/paint"
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"golang.org/x/mobile/event/size"
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"golang.org/x/mobile/event/touch"
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"golang.org/x/mobile/geom"
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)
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var initThreadID uint64
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func init() {
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// Lock the goroutine responsible for initialization to an OS thread.
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// This means the goroutine running main (and calling runApp below)
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// is locked to the OS thread that started the program. This is
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// necessary for the correct delivery of Cocoa events to the process.
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//
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// A discussion on this topic:
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// https://groups.google.com/forum/#!msg/golang-nuts/IiWZ2hUuLDA/SNKYYZBelsYJ
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runtime.LockOSThread()
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initThreadID = uint64(C.threadID())
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}
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func main(f func(App)) {
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if tid := uint64(C.threadID()); tid != initThreadID {
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log.Fatalf("app.Main called on thread %d, but app.init ran on %d", tid, initThreadID)
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}
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go func() {
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f(theApp)
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C.stopApp()
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// TODO(crawshaw): trigger runApp to return
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}()
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C.runApp()
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}
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// loop is the primary drawing loop.
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//
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// After Cocoa has captured the initial OS thread for processing Cocoa
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// events in runApp, it starts loop on another goroutine. It is locked
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// to an OS thread for its OpenGL context.
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//
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// The loop processes GL calls until a publish event appears.
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// Then it runs any remaining GL calls and flushes the screen.
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//
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// As NSOpenGLCPSwapInterval is set to 1, the call to CGLFlushDrawable
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// blocks until the screen refresh.
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func (a *app) loop(ctx C.GLintptr) {
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runtime.LockOSThread()
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C.makeCurrentContext(ctx)
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workAvailable := a.worker.WorkAvailable()
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for {
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select {
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case <-workAvailable:
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a.worker.DoWork()
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case <-theApp.publish:
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loop1:
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for {
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select {
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case <-workAvailable:
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a.worker.DoWork()
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default:
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break loop1
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}
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}
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C.CGLFlushDrawable(C.CGLGetCurrentContext())
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theApp.publishResult <- PublishResult{}
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select {
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case drawDone <- struct{}{}:
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default:
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}
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}
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}
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}
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var drawDone = make(chan struct{})
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// drawgl is used by Cocoa to occasionally request screen updates.
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//
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//export drawgl
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func drawgl() {
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switch theApp.lifecycleStage {
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case lifecycle.StageFocused, lifecycle.StageVisible:
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theApp.Send(paint.Event{
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External: true,
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})
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<-drawDone
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}
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}
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//export startloop
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func startloop(ctx C.GLintptr) {
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go theApp.loop(ctx)
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}
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var windowHeightPx float32
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//export setGeom
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func setGeom(pixelsPerPt float32, widthPx, heightPx int) {
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windowHeightPx = float32(heightPx)
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theApp.eventsIn <- size.Event{
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WidthPx: widthPx,
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HeightPx: heightPx,
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WidthPt: geom.Pt(float32(widthPx) / pixelsPerPt),
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HeightPt: geom.Pt(float32(heightPx) / pixelsPerPt),
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PixelsPerPt: pixelsPerPt,
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}
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}
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var touchEvents struct {
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sync.Mutex
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pending []touch.Event
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}
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func sendTouch(t touch.Type, x, y float32) {
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theApp.eventsIn <- touch.Event{
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X: x,
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Y: windowHeightPx - y,
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Sequence: 0,
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Type: t,
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}
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}
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//export eventMouseDown
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func eventMouseDown(x, y float32) { sendTouch(touch.TypeBegin, x, y) }
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//export eventMouseDragged
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func eventMouseDragged(x, y float32) { sendTouch(touch.TypeMove, x, y) }
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//export eventMouseEnd
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func eventMouseEnd(x, y float32) { sendTouch(touch.TypeEnd, x, y) }
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//export lifecycleDead
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func lifecycleDead() { theApp.sendLifecycle(lifecycle.StageDead) }
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//export eventKey
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func eventKey(runeVal int32, direction uint8, code uint16, flags uint32) {
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var modifiers key.Modifiers
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for _, mod := range mods {
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if flags&mod.flags == mod.flags {
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modifiers |= mod.mod
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}
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}
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theApp.eventsIn <- key.Event{
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Rune: convRune(rune(runeVal)),
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Code: convVirtualKeyCode(code),
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Modifiers: modifiers,
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Direction: key.Direction(direction),
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}
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}
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//export eventFlags
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func eventFlags(flags uint32) {
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for _, mod := range mods {
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if flags&mod.flags == mod.flags && lastFlags&mod.flags != mod.flags {
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eventKey(-1, uint8(key.DirPress), mod.code, flags)
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}
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if lastFlags&mod.flags == mod.flags && flags&mod.flags != mod.flags {
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eventKey(-1, uint8(key.DirRelease), mod.code, flags)
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}
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}
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lastFlags = flags
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}
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var lastFlags uint32
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var mods = [...]struct {
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flags uint32
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code uint16
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mod key.Modifiers
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}{
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// Left and right variants of modifier keys have their own masks,
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// but they are not documented. These were determined empirically.
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{1<<17 | 0x102, C.kVK_Shift, key.ModShift},
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{1<<17 | 0x104, C.kVK_RightShift, key.ModShift},
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{1<<18 | 0x101, C.kVK_Control, key.ModControl},
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// TODO key.ControlRight
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{1<<19 | 0x120, C.kVK_Option, key.ModAlt},
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{1<<19 | 0x140, C.kVK_RightOption, key.ModAlt},
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{1<<20 | 0x108, C.kVK_Command, key.ModMeta},
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{1<<20 | 0x110, C.kVK_Command, key.ModMeta}, // TODO: missing kVK_RightCommand
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}
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//export lifecycleAlive
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func lifecycleAlive() { theApp.sendLifecycle(lifecycle.StageAlive) }
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//export lifecycleVisible
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func lifecycleVisible() {
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theApp.sendLifecycle(lifecycle.StageVisible)
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}
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//export lifecycleFocused
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func lifecycleFocused() { theApp.sendLifecycle(lifecycle.StageFocused) }
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// convRune marks the Carbon/Cocoa private-range unicode rune representing
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// a non-unicode key event to -1, used for Rune in the key package.
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//
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// http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/CORPCHAR.TXT
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func convRune(r rune) rune {
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if '\uE000' <= r && r <= '\uF8FF' {
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return -1
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}
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return r
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}
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// convVirtualKeyCode converts a Carbon/Cocoa virtual key code number
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// into the standard keycodes used by the key package.
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//
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// To get a sense of the key map, see the diagram on
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// http://boredzo.org/blog/archives/2007-05-22/virtual-key-codes
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func convVirtualKeyCode(vkcode uint16) key.Code {
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switch vkcode {
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case C.kVK_ANSI_A:
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return key.CodeA
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case C.kVK_ANSI_B:
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return key.CodeB
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case C.kVK_ANSI_C:
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return key.CodeC
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case C.kVK_ANSI_D:
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return key.CodeD
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case C.kVK_ANSI_E:
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return key.CodeE
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case C.kVK_ANSI_F:
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return key.CodeF
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case C.kVK_ANSI_G:
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return key.CodeG
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case C.kVK_ANSI_H:
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return key.CodeH
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case C.kVK_ANSI_I:
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return key.CodeI
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case C.kVK_ANSI_J:
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return key.CodeJ
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case C.kVK_ANSI_K:
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return key.CodeK
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case C.kVK_ANSI_L:
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return key.CodeL
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case C.kVK_ANSI_M:
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return key.CodeM
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case C.kVK_ANSI_N:
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return key.CodeN
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case C.kVK_ANSI_O:
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return key.CodeO
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case C.kVK_ANSI_P:
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return key.CodeP
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case C.kVK_ANSI_Q:
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return key.CodeQ
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case C.kVK_ANSI_R:
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return key.CodeR
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case C.kVK_ANSI_S:
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return key.CodeS
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case C.kVK_ANSI_T:
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return key.CodeT
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case C.kVK_ANSI_U:
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return key.CodeU
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case C.kVK_ANSI_V:
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return key.CodeV
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case C.kVK_ANSI_W:
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return key.CodeW
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case C.kVK_ANSI_X:
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return key.CodeX
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case C.kVK_ANSI_Y:
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return key.CodeY
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case C.kVK_ANSI_Z:
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return key.CodeZ
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case C.kVK_ANSI_1:
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return key.Code1
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case C.kVK_ANSI_2:
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return key.Code2
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case C.kVK_ANSI_3:
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return key.Code3
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case C.kVK_ANSI_4:
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return key.Code4
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case C.kVK_ANSI_5:
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return key.Code5
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case C.kVK_ANSI_6:
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return key.Code6
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case C.kVK_ANSI_7:
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return key.Code7
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case C.kVK_ANSI_8:
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return key.Code8
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case C.kVK_ANSI_9:
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return key.Code9
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case C.kVK_ANSI_0:
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return key.Code0
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// TODO: move the rest of these codes to constants in key.go
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// if we are happy with them.
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case C.kVK_Return:
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return key.CodeReturnEnter
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case C.kVK_Escape:
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return key.CodeEscape
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case C.kVK_Delete:
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return key.CodeDeleteBackspace
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case C.kVK_Tab:
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return key.CodeTab
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case C.kVK_Space:
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return key.CodeSpacebar
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case C.kVK_ANSI_Minus:
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return key.CodeHyphenMinus
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case C.kVK_ANSI_Equal:
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return key.CodeEqualSign
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case C.kVK_ANSI_LeftBracket:
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return key.CodeLeftSquareBracket
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case C.kVK_ANSI_RightBracket:
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return key.CodeRightSquareBracket
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case C.kVK_ANSI_Backslash:
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return key.CodeBackslash
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// 50: Keyboard Non-US "#" and ~
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case C.kVK_ANSI_Semicolon:
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return key.CodeSemicolon
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case C.kVK_ANSI_Quote:
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return key.CodeApostrophe
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case C.kVK_ANSI_Grave:
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return key.CodeGraveAccent
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case C.kVK_ANSI_Comma:
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return key.CodeComma
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case C.kVK_ANSI_Period:
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return key.CodeFullStop
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case C.kVK_ANSI_Slash:
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return key.CodeSlash
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case C.kVK_CapsLock:
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return key.CodeCapsLock
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case C.kVK_F1:
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return key.CodeF1
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case C.kVK_F2:
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return key.CodeF2
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case C.kVK_F3:
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return key.CodeF3
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case C.kVK_F4:
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return key.CodeF4
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case C.kVK_F5:
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return key.CodeF5
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case C.kVK_F6:
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return key.CodeF6
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case C.kVK_F7:
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return key.CodeF7
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case C.kVK_F8:
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return key.CodeF8
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case C.kVK_F9:
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return key.CodeF9
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case C.kVK_F10:
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return key.CodeF10
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case C.kVK_F11:
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return key.CodeF11
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case C.kVK_F12:
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return key.CodeF12
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// 70: PrintScreen
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// 71: Scroll Lock
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// 72: Pause
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// 73: Insert
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case C.kVK_Home:
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return key.CodeHome
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case C.kVK_PageUp:
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return key.CodePageUp
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case C.kVK_ForwardDelete:
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return key.CodeDeleteForward
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case C.kVK_End:
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return key.CodeEnd
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case C.kVK_PageDown:
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return key.CodePageDown
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case C.kVK_RightArrow:
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return key.CodeRightArrow
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case C.kVK_LeftArrow:
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return key.CodeLeftArrow
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case C.kVK_DownArrow:
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return key.CodeDownArrow
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case C.kVK_UpArrow:
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return key.CodeUpArrow
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case C.kVK_ANSI_KeypadClear:
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return key.CodeKeypadNumLock
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case C.kVK_ANSI_KeypadDivide:
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return key.CodeKeypadSlash
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case C.kVK_ANSI_KeypadMultiply:
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return key.CodeKeypadAsterisk
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case C.kVK_ANSI_KeypadMinus:
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return key.CodeKeypadHyphenMinus
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case C.kVK_ANSI_KeypadPlus:
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return key.CodeKeypadPlusSign
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case C.kVK_ANSI_KeypadEnter:
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return key.CodeKeypadEnter
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case C.kVK_ANSI_Keypad1:
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return key.CodeKeypad1
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case C.kVK_ANSI_Keypad2:
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return key.CodeKeypad2
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case C.kVK_ANSI_Keypad3:
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return key.CodeKeypad3
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case C.kVK_ANSI_Keypad4:
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return key.CodeKeypad4
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case C.kVK_ANSI_Keypad5:
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return key.CodeKeypad5
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case C.kVK_ANSI_Keypad6:
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return key.CodeKeypad6
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case C.kVK_ANSI_Keypad7:
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return key.CodeKeypad7
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case C.kVK_ANSI_Keypad8:
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return key.CodeKeypad8
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case C.kVK_ANSI_Keypad9:
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return key.CodeKeypad9
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case C.kVK_ANSI_Keypad0:
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return key.CodeKeypad0
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case C.kVK_ANSI_KeypadDecimal:
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return key.CodeKeypadFullStop
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case C.kVK_ANSI_KeypadEquals:
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return key.CodeKeypadEqualSign
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case C.kVK_F13:
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return key.CodeF13
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case C.kVK_F14:
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return key.CodeF14
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case C.kVK_F15:
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return key.CodeF15
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case C.kVK_F16:
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return key.CodeF16
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case C.kVK_F17:
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return key.CodeF17
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case C.kVK_F18:
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return key.CodeF18
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case C.kVK_F19:
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return key.CodeF19
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case C.kVK_F20:
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return key.CodeF20
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// 116: Keyboard Execute
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case C.kVK_Help:
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return key.CodeHelp
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// 118: Keyboard Menu
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// 119: Keyboard Select
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// 120: Keyboard Stop
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// 121: Keyboard Again
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// 122: Keyboard Undo
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// 123: Keyboard Cut
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// 124: Keyboard Copy
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// 125: Keyboard Paste
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// 126: Keyboard Find
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case C.kVK_Mute:
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return key.CodeMute
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case C.kVK_VolumeUp:
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return key.CodeVolumeUp
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case C.kVK_VolumeDown:
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return key.CodeVolumeDown
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// 130: Keyboard Locking Caps Lock
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// 131: Keyboard Locking Num Lock
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// 132: Keyboard Locking Scroll Lock
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// 133: Keyboard Comma
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// 134: Keyboard Equal Sign
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// ...: Bunch of stuff
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case C.kVK_Control:
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return key.CodeLeftControl
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case C.kVK_Shift:
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return key.CodeLeftShift
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case C.kVK_Option:
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return key.CodeLeftAlt
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case C.kVK_Command:
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return key.CodeLeftGUI
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case C.kVK_RightControl:
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return key.CodeRightControl
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case C.kVK_RightShift:
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return key.CodeRightShift
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case C.kVK_RightOption:
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return key.CodeRightAlt
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// TODO key.CodeRightGUI
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default:
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return key.CodeUnknown
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}
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}
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