ZacharyZhang-NY
51af14709d
A terminal with history, a Go-colored code block, a log viewer that follows, a hex viewer, a memory map, a JSON tree, a line diff, a GAME OVER crash screen, an FPS meter, profiler bars, breakpoints, variables, command history, a shortcut list, a debug grid, a pixel editor that exports string art, a palette editor, a sprite sheet, a glyph map and a 6502 register view. layout.ScrollArea takes Follow, and ChatLog now uses it. data.TreeNode takes a Value drawn in its Slot. pixel gains Has, and Sprite.Art writes MustSprite art. pixel.Editor takes the caller's value at each input event, so a value changed between frames is never typed onto.
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package layout_test
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import (
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"testing"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/layout"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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func TestScrollAreaFollowsItsEndWhileThere(t *testing.T) {
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s, n, follow := ui.ScrollState{}, 10, true
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tt := ui.NewTester(func(c *ui.Context) {
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pixel.Use(c, pixel.Settings{Palette: pixel.SpringDay})
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layout.ScrollArea(c, &s, layout.ScrollAreaOptions{Label: "Log", Follow: follow}, func() {
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for range n {
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ui.Box(c).Height(32)
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}
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}).Element.Size(200, 100)
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}, 300, 200)
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tt.Frame()
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if s.MaxY == 0 || s.Y != s.MaxY {
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t.Fatalf("a following view opened at %v of %v", s.Y, s.MaxY)
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}
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n++
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tt.Frame()
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if s.Y != s.MaxY {
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t.Fatalf("at the end, a new row left the view at %v of %v", s.Y, s.MaxY)
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}
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// Scrolled up it stays; back at the end, it follows.
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s.Y = 0
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n++
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tt.Frame()
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if s.Y != 0 {
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t.Fatalf("scrolled up, the view jumped to %v", s.Y)
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}
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s.Y = s.MaxY
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tt.Frame()
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n++
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tt.Frame()
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if s.Y != s.MaxY {
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t.Fatalf("back at the end, the view stopped following at %v of %v", s.Y, s.MaxY)
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}
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// Without Follow, growth leaves the view alone.
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follow, s = false, ui.ScrollState{}
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n++
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tt.Frame()
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if s.Y != 0 {
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t.Fatalf("a plain view followed to %v", s.Y)
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}
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}
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