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textgrid_test.go
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package widget
import (
"image/color"
"strings"
"testing"
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/canvas"
"fyne.io/fyne/v2/test"
"fyne.io/fyne/v2/theme"
"github.com/stretchr/testify/assert"
)
func TestNewTextGrid(t *testing.T) {
grid := NewTextGridFromString("A")
test.WidgetRenderer(grid).Refresh()
assert.Equal(t, 1, len(grid.Rows))
assert.Equal(t, 1, len(grid.Rows[0].Cells))
}
func TestTextGrid_CreateRendererRows(t *testing.T) {
grid := NewTextGrid()
grid.Resize(fyne.NewSize(52, 22))
rend := test.WidgetRenderer(grid).(*textGridRenderer)
rend.Refresh()
assert.Equal(t, 12, len(rend.objects))
}
func TestTextGrid_Row(t *testing.T) {
grid := NewTextGridFromString("Ab\nC")
test.WidgetRenderer(grid).Refresh()
assert.NotNil(t, grid.Row(0))
assert.Equal(t, 2, len(grid.Row(0).Cells))
assert.Equal(t, 'b', grid.Row(0).Cells[1].Rune)
}
func TestTextGrid_Rows(t *testing.T) {
grid := NewTextGridFromString("Ab\nC")
test.WidgetRenderer(grid).Refresh()
assert.Equal(t, 2, len(grid.Rows))
assert.Equal(t, 2, len(grid.Rows[0].Cells))
}
func TestTextGrid_RowText(t *testing.T) {
grid := NewTextGridFromString("Ab\nC")
test.WidgetRenderer(grid).Refresh()
assert.Equal(t, "Ab", grid.RowText(0))
assert.Equal(t, "C", grid.RowText(1))
}
func TestTextGrid_SetText(t *testing.T) {
grid := NewTextGrid()
grid.Resize(fyne.NewSize(20, 20))
text := "\n\n\n\n\n\n\n\n\n\n\n\n"
grid.SetText(text) // goes beyond the current view size - don't crash
assert.Equal(t, 13, len(grid.Rows))
assert.Equal(t, 0, len(grid.Rows[1].Cells))
}
func TestTextGrid_SetText_Overflow(t *testing.T) {
grid := NewTextGrid()
grid.SetText("Hello\nthere")
assert.Equal(t, 2, len(grid.Rows))
assert.Equal(t, 5, len(grid.Rows[1].Cells))
}
func TestTextGrid_SetRowStyle(t *testing.T) {
grid := NewTextGridFromString("Abc")
grid.SetRowStyle(0, &CustomTextGridStyle{FGColor: color.White, BGColor: color.Black})
assert.NotNil(t, grid.Rows[0].Style)
assert.Equal(t, color.White, grid.Rows[0].Style.TextColor())
assert.Equal(t, color.Black, grid.Rows[0].Style.BackgroundColor())
}
func TestTextGrid_SetStyle(t *testing.T) {
grid := NewTextGridFromString("Abc")
grid.SetStyle(0, 1, &CustomTextGridStyle{FGColor: color.White, BGColor: color.Black})
assert.Nil(t, grid.Rows[0].Cells[0].Style)
assert.Equal(t, color.White, grid.Rows[0].Cells[1].Style.TextColor())
assert.Equal(t, color.Black, grid.Rows[0].Cells[1].Style.BackgroundColor())
}
func TestTextGrid_SetStyleRange(t *testing.T) {
grid := NewTextGridFromString("Ab\ncd\nef")
grid.SetStyleRange(0, 1, 2, 0, &CustomTextGridStyle{FGColor: color.White, BGColor: color.Black})
assert.Nil(t, grid.Rows[0].Cells[0].Style)
assert.Equal(t, color.White, grid.Rows[0].Cells[1].Style.TextColor())
assert.Equal(t, color.Black, grid.Rows[0].Cells[1].Style.BackgroundColor())
assert.Equal(t, color.White, grid.Rows[1].Cells[0].Style.TextColor())
assert.Equal(t, color.Black, grid.Rows[1].Cells[0].Style.BackgroundColor())
assert.Equal(t, color.White, grid.Rows[1].Cells[1].Style.TextColor())
assert.Equal(t, color.Black, grid.Rows[1].Cells[1].Style.BackgroundColor())
assert.Equal(t, color.White, grid.Rows[2].Cells[0].Style.TextColor())
assert.Equal(t, color.Black, grid.Rows[2].Cells[0].Style.BackgroundColor())
assert.Nil(t, grid.Rows[2].Cells[1].Style)
}
func TestTextGrid_SetStyleRange_Overflow(t *testing.T) {
grid := NewTextGridFromString("Ab\ncd")
grid.SetStyleRange(-2, 0, -1, 2, &CustomTextGridStyle{FGColor: color.White, BGColor: color.Black})
grid.SetStyleRange(2, 2, 4, 2, &CustomTextGridStyle{FGColor: color.White, BGColor: color.Black})
assert.Nil(t, grid.Rows[0].Cells[0].Style)
assert.Nil(t, grid.Rows[0].Cells[1].Style)
assert.Nil(t, grid.Rows[1].Cells[0].Style)
assert.Nil(t, grid.Rows[1].Cells[1].Style)
grid.SetStyleRange(-2, 0, 0, 0, &CustomTextGridStyle{FGColor: color.Black, BGColor: color.White})
grid.SetStyleRange(1, 1, 4, 0, &CustomTextGridStyle{FGColor: color.White, BGColor: color.Black})
assert.Equal(t, color.Black, grid.Rows[0].Cells[0].Style.TextColor())
assert.Equal(t, color.White, grid.Rows[0].Cells[0].Style.BackgroundColor())
assert.Nil(t, grid.Rows[0].Cells[1].Style)
assert.Nil(t, grid.Rows[1].Cells[0].Style)
assert.Equal(t, color.White, grid.Rows[1].Cells[1].Style.TextColor())
assert.Equal(t, color.Black, grid.Rows[1].Cells[1].Style.BackgroundColor())
}
func TestTextGrid_Text(t *testing.T) {
grid := NewTextGrid()
assert.Equal(t, "", grid.Text())
input := "Hello\nthere"
grid.SetText(input)
assert.Equal(t, input, grid.Text())
}
func TestTextGridRenderer_Resize(t *testing.T) {
grid := NewTextGridFromString("1\n2")
grid.ShowLineNumbers = true
renderer := test.WidgetRenderer(grid)
min := renderer.MinSize()
grid.Resize(fyne.NewSize(100, 250))
assert.Equal(t, min, renderer.MinSize())
}
func TestTextGridRenderer_ShowLineNumbers(t *testing.T) {
grid := NewTextGridFromString("1\n2\n3\n4\n5\n6\n7\n8\n9\n10")
grid.ShowLineNumbers = true
grid.Resize(fyne.NewSize(100, 250))
assertGridContent(t, grid, ` 1|1
2|
3|3
4|4
5|5
6|6
7|7
8|8
9|9
10|10
`)
}
func TestTextGridRender_Size(t *testing.T) {
grid := NewTextGrid()
grid.Resize(fyne.NewSize(30, 42)) // causes refresh
rend := test.WidgetRenderer(grid).(*textGridRenderer)
assert.Equal(t, 3, rend.cols)
assert.Equal(t, 2, rend.rows)
}
func TestTextGridRender_Whitespace(t *testing.T) {
grid := NewTextGridFromString("A b\nc")
grid.ShowWhitespace = true
grid.Resize(fyne.NewSize(56, 42)) // causes refresh
assertGridContent(t, grid, `A·b↵
c`)
}
func TestTextGridRender_WhitespaceTab(t *testing.T) {
grid := NewTextGridFromString("A\n\tb")
grid.ShowWhitespace = true
grid.Resize(fyne.NewSize(56, 42)) // causes refresh
assertGridContent(t, grid, `A↵
→···b`)
assert.Equal(t, "A\n\tb", grid.Text())
}
func TestTextGridRender_RowColor(t *testing.T) {
grid := NewTextGridFromString("Ab ")
customStyle := &CustomTextGridStyle{FGColor: color.Black}
grid.Rows[0].Style = customStyle
grid.ShowWhitespace = true
grid.Resize(fyne.NewSize(56, 22)) // causes refresh
assertGridStyle(t, grid, "112", map[string]TextGridStyle{"1": customStyle, "2": TextGridStyleWhitespace})
}
func TestTextGridRender_TextColor(t *testing.T) {
grid := NewTextGridFromString("Ab ")
customStyle := &CustomTextGridStyle{FGColor: color.Black}
grid.Rows[0].Cells[1].Style = customStyle
grid.ShowWhitespace = true
grid.Resize(fyne.NewSize(56, 22)) // causes refresh
currentTextColor := TextGridStyleWhitespace.TextColor()
assertGridStyle(t, grid, " 12", map[string]TextGridStyle{"1": customStyle, "2": TextGridStyleWhitespace})
test.WithTestTheme(t, func() {
grid.Refresh()
assert.NotEqual(t, TextGridStyleWhitespace.TextColor(), currentTextColor)
assertGridStyle(t, grid, " 12", map[string]TextGridStyle{"1": customStyle, "2": TextGridStyleWhitespace})
})
}
func assertGridContent(t *testing.T, g *TextGrid, expected string) {
lines := strings.Split(expected, "\n")
renderer := test.WidgetRenderer(g).(*textGridRenderer)
for y, line := range lines {
x := 0 // rune count - using index below would be offset into string bytes
for _, r := range line {
_, fg := rendererCell(renderer, y, x)
assert.Equal(t, r, []rune(fg.Text)[0])
x++
}
}
}
func assertGridStyle(t *testing.T, g *TextGrid, expected string, expectedStyles map[string]TextGridStyle) {
lines := strings.Split(expected, "\n")
renderer := test.WidgetRenderer(g).(*textGridRenderer)
for y, line := range lines {
x := 0 // rune count - using index below would be offset into string bytes
for _, r := range line {
expected := expectedStyles[string(r)]
bg, fg := rendererCell(renderer, y, x)
if r == ' ' {
assert.Equal(t, theme.ForegroundColor(), fg.Color)
assert.Equal(t, color.Transparent, bg.FillColor)
} else {
if expected.TextColor() == nil {
assert.Equal(t, theme.ForegroundColor(), fg.Color)
} else {
assert.Equal(t, expected.TextColor(), fg.Color)
}
if expected.BackgroundColor() == nil {
assert.Equal(t, color.Transparent, bg.FillColor)
} else {
assert.Equal(t, expected.BackgroundColor(), bg.FillColor)
}
}
x++
}
}
}
func rendererCell(r *textGridRenderer, row, col int) (*canvas.Rectangle, *canvas.Text) {
i := (row*r.cols + col) * 2
return r.objects[i].(*canvas.Rectangle), r.objects[i+1].(*canvas.Text)
}