github.com/SkycoinProject/gomobile@v0.0.0-20190312151609-d3739f865fa6/app/internal/testapp/testapp.go (about)

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build darwin linux
     6  
     7  // Small test app used by app/app_test.go.
     8  package main
     9  
    10  import (
    11  	"log"
    12  	"net"
    13  
    14  	"golang.org/x/mobile/app"
    15  	"golang.org/x/mobile/app/internal/apptest"
    16  	"golang.org/x/mobile/event/lifecycle"
    17  	"golang.org/x/mobile/event/paint"
    18  	"golang.org/x/mobile/event/size"
    19  	"golang.org/x/mobile/event/touch"
    20  	"golang.org/x/mobile/gl"
    21  )
    22  
    23  func main() {
    24  	app.Main(func(a app.App) {
    25  		var (
    26  			glctx   gl.Context
    27  			visible bool
    28  		)
    29  
    30  		addr := "127.0.0.1:" + apptest.Port
    31  		log.Printf("addr: %s", addr)
    32  
    33  		conn, err := net.Dial("tcp", addr)
    34  		if err != nil {
    35  			log.Fatal(err)
    36  		}
    37  		defer conn.Close()
    38  		log.Printf("dialled")
    39  		comm := &apptest.Comm{
    40  			Conn:   conn,
    41  			Fatalf: log.Panicf,
    42  			Printf: log.Printf,
    43  		}
    44  
    45  		comm.Send("hello_from_testapp")
    46  		comm.Recv("hello_from_host")
    47  
    48  		color := "red"
    49  		sendPainting := false
    50  		for e := range a.Events() {
    51  			switch e := a.Filter(e).(type) {
    52  			case lifecycle.Event:
    53  				switch e.Crosses(lifecycle.StageVisible) {
    54  				case lifecycle.CrossOn:
    55  					comm.Send("lifecycle_visible")
    56  					sendPainting = true
    57  					visible = true
    58  					glctx, _ = e.DrawContext.(gl.Context)
    59  				case lifecycle.CrossOff:
    60  					comm.Send("lifecycle_not_visible")
    61  					visible = false
    62  				}
    63  			case size.Event:
    64  				comm.Send("size", e.PixelsPerPt, e.Orientation)
    65  			case paint.Event:
    66  				if visible {
    67  					if color == "red" {
    68  						glctx.ClearColor(1, 0, 0, 1)
    69  					} else {
    70  						glctx.ClearColor(0, 1, 0, 1)
    71  					}
    72  					glctx.Clear(gl.COLOR_BUFFER_BIT)
    73  					a.Publish()
    74  				}
    75  				if sendPainting {
    76  					comm.Send("paint", color)
    77  					sendPainting = false
    78  				}
    79  			case touch.Event:
    80  				comm.Send("touch", e.Type, e.X, e.Y)
    81  				if e.Type == touch.TypeEnd {
    82  					if color == "red" {
    83  						color = "green"
    84  					} else {
    85  						color = "red"
    86  					}
    87  					sendPainting = true
    88  					// Send a paint event so the screen gets redrawn.
    89  					a.Send(paint.Event{})
    90  				}
    91  			}
    92  		}
    93  	})
    94  }