gioui.org@v0.6.1-0.20240506124620-7a9ce51988ce/gesture/gesture_test.go (about)

     1  // SPDX-License-Identifier: Unlicense OR MIT
     2  
     3  package gesture
     4  
     5  import (
     6  	"image"
     7  	"testing"
     8  	"time"
     9  
    10  	"gioui.org/f32"
    11  	"gioui.org/io/event"
    12  	"gioui.org/io/input"
    13  	"gioui.org/io/pointer"
    14  	"gioui.org/op"
    15  	"gioui.org/op/clip"
    16  )
    17  
    18  func TestHover(t *testing.T) {
    19  	ops := new(op.Ops)
    20  	var h Hover
    21  	rect := image.Rect(20, 20, 40, 40)
    22  	stack := clip.Rect(rect).Push(ops)
    23  	h.Add(ops)
    24  	stack.Pop()
    25  	r := new(input.Router)
    26  	h.Update(r.Source())
    27  	r.Frame(ops)
    28  
    29  	r.Queue(
    30  		pointer.Event{Kind: pointer.Move, Position: f32.Pt(30, 30)},
    31  	)
    32  	if !h.Update(r.Source()) {
    33  		t.Fatal("expected hovered")
    34  	}
    35  
    36  	r.Queue(
    37  		pointer.Event{Kind: pointer.Move, Position: f32.Pt(50, 50)},
    38  	)
    39  	if h.Update(r.Source()) {
    40  		t.Fatal("expected not hovered")
    41  	}
    42  }
    43  
    44  func TestMouseClicks(t *testing.T) {
    45  	for _, tc := range []struct {
    46  		label  string
    47  		events []event.Event
    48  		clicks []int // number of combined clicks per click (single, double...)
    49  	}{
    50  		{
    51  			label:  "single click",
    52  			events: mouseClickEvents(200 * time.Millisecond),
    53  			clicks: []int{1},
    54  		},
    55  		{
    56  			label: "double click",
    57  			events: mouseClickEvents(
    58  				100*time.Millisecond,
    59  				100*time.Millisecond+doubleClickDuration-1),
    60  			clicks: []int{1, 2},
    61  		},
    62  		{
    63  			label: "two single clicks",
    64  			events: mouseClickEvents(
    65  				100*time.Millisecond,
    66  				100*time.Millisecond+doubleClickDuration+1),
    67  			clicks: []int{1, 1},
    68  		},
    69  	} {
    70  		t.Run(tc.label, func(t *testing.T) {
    71  			var click Click
    72  			var ops op.Ops
    73  			click.Add(&ops)
    74  
    75  			var r input.Router
    76  			click.Update(r.Source())
    77  			r.Frame(&ops)
    78  			r.Queue(tc.events...)
    79  
    80  			var clicks []ClickEvent
    81  			for {
    82  				ev, ok := click.Update(r.Source())
    83  				if !ok {
    84  					break
    85  				}
    86  				if ev.Kind == KindClick {
    87  					clicks = append(clicks, ev)
    88  				}
    89  			}
    90  			if got, want := len(clicks), len(tc.clicks); got != want {
    91  				t.Fatalf("got %d mouse clicks, expected %d", got, want)
    92  			}
    93  
    94  			for i, click := range clicks {
    95  				if got, want := click.NumClicks, tc.clicks[i]; got != want {
    96  					t.Errorf("got %d combined mouse clicks, expected %d", got, want)
    97  				}
    98  			}
    99  		})
   100  	}
   101  }
   102  
   103  func mouseClickEvents(times ...time.Duration) []event.Event {
   104  	press := pointer.Event{
   105  		Kind:    pointer.Press,
   106  		Source:  pointer.Mouse,
   107  		Buttons: pointer.ButtonPrimary,
   108  	}
   109  	events := make([]event.Event, 0, 2*len(times))
   110  	for _, t := range times {
   111  		press := press
   112  		press.Time = t
   113  		release := press
   114  		release.Kind = pointer.Release
   115  		events = append(events, press, release)
   116  	}
   117  	return events
   118  }