91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
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package main
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import "github.com/nsf/termbox-go"
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type Widget interface {
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layoutUnderPressure(pressure int) (int, int)
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drawAtPoint(cursor Cursor, x int, y int, pressure int, style Style) (int, int)
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}
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type WidgetSlice []Widget
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func (widgets WidgetSlice) sizeAtPressure(pressure int) (int, int) {
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total_widget_width := 0
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max_widget_height := 0
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for _, widget := range widgets {
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widget_width, widget_height := widget.layoutUnderPressure(pressure)
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total_widget_width += widget_width
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if widget_height > max_widget_height {
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max_widget_height = widget_height
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}
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}
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return total_widget_width, max_widget_height
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}
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func (widgets WidgetSlice) numberVisibleAtPressure(pressure int) int {
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count := 0
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for _, widget := range widgets {
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widget_width, _ := widget.layoutUnderPressure(pressure)
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if widget_width > 0 {
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count++
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}
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}
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return count
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}
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func (widgets WidgetSlice) layout() (int, int) {
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width, _ := termbox.Size()
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pressure := 0
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spacing := 4
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padding := 2
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for ; pressure < 10; pressure++ {
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spacing = 4
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total_widget_width, _ := widgets.sizeAtPressure(pressure)
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num_spaces := widgets.numberVisibleAtPressure(pressure) - 1
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for ; total_widget_width+num_spaces*spacing > (width-2*padding) && spacing > 2; spacing-- {
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}
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if total_widget_width+num_spaces*spacing <= (width - 2*padding) {
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break
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}
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}
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return pressure, spacing
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}
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func listOfWidgets() WidgetSlice {
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all_widgets := [...]Widget{
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NavigationWidget(0),
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//CursorWidget(0),
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//OffsetWidget(0),
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}
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return all_widgets[:]
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}
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func heightOfWidgets() int {
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widgets := listOfWidgets()
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pressure, _ := widgets.layout()
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_, max_widget_height := widgets.sizeAtPressure(pressure)
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return max_widget_height
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}
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func drawWidgets(cursor Cursor, style Style) (int, int) {
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widgets := listOfWidgets()
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width, height := termbox.Size()
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spacing := 4
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padding := 2
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pressure, spacing := widgets.layout()
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total_widget_width, max_widget_height := widgets.sizeAtPressure(pressure)
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num_spaces := widgets.numberVisibleAtPressure(pressure) - 1
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start_x, start_y := (width-2*padding-(total_widget_width+num_spaces*spacing))/2+padding, height-max_widget_height
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x, y := start_x, start_y
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for _, widget := range widgets {
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widget_width, _ := widget.drawAtPoint(cursor, x, y, pressure, style)
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x += widget_width
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if widget_width > 0 {
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x += spacing
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}
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}
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return total_widget_width + num_spaces*spacing, max_widget_height
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}
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