sampler-fork/config/arrangement.go

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package config
import (
ui "github.com/gizak/termui/v3"
"github.com/sqshq/sampler/console"
"image"
)
func (c *Config) setDefaultArrangement() {
components := getComponents(c)
if allHaveNoPosition(components) {
setSingleComponentPosition(components[0])
}
for _, component := range components {
if component.Position == nil || len(component.Position) == 0 {
lc := getLargestComponent(components)
le := getLargestEmptySpaceRectangle(components)
if getSquare(lc) > le.Dx()*le.Dy()*2 {
arrangeIntoLargestComponent(component, lc)
} else {
arrangeIntoLargestEmptySpace(component, le)
}
}
}
}
func arrangeIntoLargestComponent(component *ComponentConfig, lc *ComponentConfig) {
lr := lc.GetRectangle()
var w, h, ws, hs int
if lr.Dx()/2 > lr.Dy() {
w = lr.Dx() / 2
h = lr.Dy()
ws = w
hs = 0
} else {
w = lr.Dx()
h = lr.Dy() / 2
ws = 0
hs = h
}
component.Position = [][]int{
{lr.Min.X + ws, lr.Min.Y + hs},
{w, h},
}
lc.Position = [][]int{
{lr.Min.X, lr.Min.Y},
{w, h},
}
}
func arrangeIntoLargestEmptySpace(component *ComponentConfig, le image.Rectangle) {
component.Position = [][]int{
{le.Min.X, le.Min.Y},
{le.Dx(), le.Dy()},
}
}
func allHaveNoPosition(components []*ComponentConfig) bool {
for _, component := range components {
if component.Position != nil {
return false
}
}
return true
}
func getLargestComponent(components []*ComponentConfig) *ComponentConfig {
largestComponent := components[0]
for _, component := range components {
if getSquare(component) > getSquare(largestComponent) {
largestComponent = component
}
}
return largestComponent
}
func getSquare(c *ComponentConfig) int {
r := c.GetRectangle()
return r.Dx() * r.Dy()
}
func getComponents(c *Config) []*ComponentConfig {
var components []*ComponentConfig
for i := range c.RunCharts {
components = append(components, &c.RunCharts[i].ComponentConfig)
}
for i := range c.BarCharts {
components = append(components, &c.BarCharts[i].ComponentConfig)
}
for i := range c.Gauges {
components = append(components, &c.Gauges[i].ComponentConfig)
}
for i := range c.SparkLines {
components = append(components, &c.SparkLines[i].ComponentConfig)
}
for i := range c.AsciiBoxes {
components = append(components, &c.AsciiBoxes[i].ComponentConfig)
}
for i := range c.TextBoxes {
components = append(components, &c.TextBoxes[i].ComponentConfig)
}
return components
}
func setSingleComponentPosition(c *ComponentConfig) {
w := int(console.ColumnsCount)
h := int(console.RowsCount * 0.6)
c.Position = [][]int{
{(console.ColumnsCount - w) / 2, (console.RowsCount - h) / 2},
{w, h},
}
}
func getLargestEmptySpaceRectangle(components []*ComponentConfig) image.Rectangle {
grid := [console.RowsCount][console.ColumnsCount]int{}
for _, component := range components {
rect := component.GetRectangle()
for r := ui.MinInt(console.RowsCount, rect.Min.Y); r < ui.MinInt(console.RowsCount, rect.Max.Y); r++ {
for c := ui.MinInt(console.ColumnsCount, rect.Min.X); c < ui.MinInt(console.ColumnsCount, rect.Max.X); c++ {
grid[r][c] = 1
}
}
}
mr := image.ZR
for row := 0; row < console.RowsCount; row++ {
histogram := createHistogram(grid, row)
r := calcMaxRectangle(histogram, row)
if r.Dx()*r.Dy() > mr.Dx()*mr.Dy() {
mr = r
}
}
return mr
}
func calcMaxRectangle(histogram [console.ColumnsCount]int, row int) image.Rectangle {
maxRectangle := image.ZR
maxArea := 0
for i := 0; i < len(histogram); i++ {
height := histogram[i]
if height > maxArea {
maxArea = height
maxRectangle = image.Rect(i, row, i, row+height)
}
for j := i - 1; j >= 0; j-- {
width := i - j + 1
height = ui.MinInt(height, histogram[j])
if width*height > maxArea {
maxArea = width * height
maxRectangle = image.Rect(j, row, j+width, row+height)
}
}
}
return maxRectangle
}
func createHistogram(grid [console.RowsCount][console.ColumnsCount]int, row int) [console.ColumnsCount]int {
histogram := [console.ColumnsCount]int{}
for column := 0; column < console.ColumnsCount; column++ {
histogram[column] = countEmptyCellsBelow(grid, row, column)
}
return histogram
}
func countEmptyCellsBelow(grid [console.RowsCount][console.ColumnsCount]int, row int, column int) int {
count := 0
for r := row; r < console.RowsCount; r++ {
if grid[r][column] == 1 {
return count
}
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count++
}
return count
}