Raycaster example works
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@ -1,104 +0,0 @@
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package containers
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import "image"
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import "git.tebibyte.media/sashakoshka/tomo"
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import "git.tebibyte.media/sashakoshka/tomo/default/theme"
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import "git.tebibyte.media/sashakoshka/tomo/default/config"
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type childManager struct {
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onChange func ()
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children []tomo.LayoutEntry
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parent tomo.Parent
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theme theme.Wrapped
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config config.Wrapped
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}
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// Adopt adds a new child element to the container. If expand is set to true,
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// the element will expand (instead of contract to its minimum size), in
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// whatever way is defined by the container's layout.
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func (manager *childManager) Adopt (child tomo.Element, expand bool) {
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if child0, ok := child.(tomo.Themeable); ok {
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child0.SetTheme(manager.theme.Theme)
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}
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if child0, ok := child.(tomo.Configurable); ok {
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child0.SetConfig(manager.config.Config)
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}
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child.SetParent(manager.parent)
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manager.children = append (manager.children, tomo.LayoutEntry {
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Element: child,
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Expand: expand,
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})
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manager.onChange()
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}
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// Disown removes the given child from the container if it is contained within
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// it.
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func (manager *childManager) Disown (child tomo.Element) {
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for index, entry := range manager.children {
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if entry.Element == child {
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manager.clearChildEventHandlers(entry.Element)
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manager.children = append (
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manager.children[:index],
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manager.children[index + 1:]...)
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break
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}
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}
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manager.onChange()
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}
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// DisownAll removes all child elements from the container at once.
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func (manager *childManager) DisownAll () {
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for _, entry := range manager.children {
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manager.clearChildEventHandlers(entry.Element)
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}
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manager.children = nil
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manager.onChange()
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}
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// Children returns a slice containing this element's children.
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func (manager *childManager) Children () (children []tomo.Element) {
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children = make([]tomo.Element, len(manager.children))
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for index, entry := range manager.children {
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children[index] = entry.Element
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}
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return
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}
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// CountChildren returns the amount of children contained within this element.
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func (manager *childManager) CountChildren () (count int) {
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return len(manager.children)
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}
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// Child returns the child at the specified index. If the index is out of
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// bounds, this method will return nil.
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func (manager *childManager) Child (index int) (child tomo.Element) {
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if index < 0 || index > len(manager.children) { return }
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return manager.children[index].Element
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}
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// ChildAt returns the child that contains the specified x and y coordinates. If
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// there are no children at the coordinates, this method will return nil.
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func (manager *childManager) ChildAt (point image.Point) (child tomo.Element) {
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for _, entry := range manager.children {
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if point.In(entry.Bounds) {
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child = entry.Element
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}
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}
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return
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}
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func (manager *childManager) clearChildEventHandlers (child tomo.Element) {
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child.DrawTo(nil, image.Rectangle { }, nil)
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child.SetParent(nil)
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if child, ok := child.(tomo.Focusable); ok {
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if child.Focused() {
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child.HandleUnfocus()
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}
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}
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}
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@ -1,587 +0,0 @@
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package containers
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import "image"
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import "git.tebibyte.media/sashakoshka/tomo"
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import "git.tebibyte.media/sashakoshka/tomo/input"
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import "git.tebibyte.media/sashakoshka/tomo/canvas"
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import "git.tebibyte.media/sashakoshka/tomo/artist"
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import "git.tebibyte.media/sashakoshka/tomo/elements/core"
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import "git.tebibyte.media/sashakoshka/tomo/default/theme"
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import "git.tebibyte.media/sashakoshka/tomo/default/config"
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// TODO: using the event propagator core might not be the best idea here. we
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// should have slightly different behavior to sync the focused element with the
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// selected cell. alternatively we could pass a callback to the propagator that
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// fires when the focused child changes. this would also allow things like
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// scrolling to the focused child (for this element and others).
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type tableCell struct {
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tomo.Element
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tomo.Pattern
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image.Rectangle
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}
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// TableContainer is a container that lays its contents out in a table. It can
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// be scrolled.
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type TableContainer struct {
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*core.Core
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*core.Propagator
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core core.CoreControl
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topHeading bool
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leftHeading bool
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columns int
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rows int
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scroll image.Point
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warping bool
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grid [][]tableCell
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children []tomo.Element
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contentBounds image.Rectangle
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forcedMinimumWidth int
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forcedMinimumHeight int
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selectedColumn int
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selectedRow int
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config config.Wrapped
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theme theme.Wrapped
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onSelect func ()
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onScrollBoundsChange func ()
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}
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// NewTable creates a new table element with the specified amount of columns and
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// rows. If top or left heading is set to true, the first row or column
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// respectively will display as a table header.
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func NewTableContainer (
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columns, rows int,
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topHeading, leftHeading bool,
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) (
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element *TableContainer,
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) {
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element = &TableContainer {
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topHeading: topHeading,
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leftHeading: leftHeading,
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selectedColumn: -1,
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selectedRow: -1,
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}
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element.theme.Case = tomo.C("tomo", "tableContainer")
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element.Core, element.core = core.NewCore(element, element.redoAll)
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element.Propagator = core.NewPropagator(element, element.core)
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element.Resize(columns, rows)
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return
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}
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// Set places an element at the specified column and row. If the element passed
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// is nil, whatever element occupies the cell currently is removed.
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func (element *TableContainer) Set (column, row int, child tomo.Element) {
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if row < 0 || row >= element.rows { return }
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if column < 0 || column >= element.columns { return }
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childList := element.children
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if child == nil {
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if element.grid[row][column].Element == nil {
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// no-op
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return
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} else {
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// removing the child that is currently in a slow
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element.unhook(element.grid[row][column].Element)
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childList = childList[:len(childList) - 1]
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element.grid[row][column].Element = child
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}
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} else {
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element.hook(child)
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if element.grid[row][column].Element == nil {
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// putting the child in an empty slot
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childList = append(childList, nil)
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element.grid[row][column].Element = child
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} else {
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// replacing the child that is currently in a slow
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element.unhook(element.grid[row][column].Element)
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element.grid[row][column].Element = child
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}
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}
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element.rebuildChildList(childList)
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element.children = childList
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element.redoAll()
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}
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// Resize changes the amount of columns and rows in the table. If the table is
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// resized to be smaller, children in cells that do not exist anymore will be
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// removed. The minimum size for a TableContainer is 1x1.
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func (element *TableContainer) Resize (columns, rows int) {
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if columns < 1 { columns = 1 }
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if rows < 1 { rows = 1 }
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if element.columns == columns && element.rows == rows { return }
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amountRemoved := 0
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// handle rows as a whole
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if rows < element.rows {
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// disown children in bottom rows
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for _, row := range element.grid[rows:] {
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for index, child := range row {
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if child.Element != nil {
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element.unhook(child.Element)
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amountRemoved ++
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row[index].Element = nil
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}}}
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// cut grid to size
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element.grid = element.grid[:rows]
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} else {
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// expand grid
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newGrid := make([][]tableCell, rows)
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copy(newGrid, element.grid)
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element.grid = newGrid
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}
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// handle each row individually
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for rowIndex, row := range element.grid {
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if columns < element.columns {
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// disown children in the far right of the row
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for index, child := range row[columns:] {
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if child.Element != nil {
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element.unhook(child.Element)
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amountRemoved ++
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row[index].Element = nil
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}}
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// cut row to size
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element.grid[rowIndex] = row[:columns]
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} else {
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// expand row
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newRow := make([]tableCell, columns)
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copy(newRow, row)
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element.grid[rowIndex] = newRow
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}
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}
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element.columns = columns
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element.rows = rows
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if amountRemoved > 0 {
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childList := element.children[:len(element.children) - amountRemoved]
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element.rebuildChildList(childList)
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element.children = childList
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}
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element.redoAll()
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}
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// Selected returns the column and row of the cell that is currently selected.
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// If no cell is selected, this method will return (-1, -1).
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func (element *TableContainer) Selected () (column, row int) {
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return element.selectedColumn, element.selectedRow
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}
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// OnSelect sets a function to be called when the user selects a table cell.
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func (element *TableContainer) OnSelect (callback func ()) {
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element.onSelect = callback
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}
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// Warp runs the specified callback, deferring all layout and rendering updates
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// until the callback has finished executing. This allows for aplications to
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// perform batch gui updates without flickering and stuff.
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func (element *TableContainer) Warp (callback func ()) {
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if element.warping {
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callback()
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return
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}
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element.warping = true
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callback()
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element.warping = false
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element.redoAll()
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}
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// Collapse collapses the element's minimum width and height. A value of zero
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// for either means that the element's normal value is used.
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func (element *TableContainer) Collapse (width, height int) {
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if
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element.forcedMinimumWidth == width &&
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element.forcedMinimumHeight == height {
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return
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}
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element.forcedMinimumWidth = width
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element.forcedMinimumHeight = height
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element.updateMinimumSize()
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}
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// CountChildren returns the amount of children contained within this element.
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func (element *TableContainer) CountChildren () (count int) {
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return len(element.children)
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}
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// Child returns the child at the specified index. If the index is out of
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// bounds, this method will return nil.
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func (element *TableContainer) Child (index int) (child tomo.Element) {
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if index < 0 || index > len(element.children) { return }
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return element.children[index]
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}
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func (element *TableContainer) Window () tomo.Window {
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return element.core.Window()
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}
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// NotifyMinimumSizeChange notifies the container that the minimum size of a
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// child element has changed.
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func (element *TableContainer) NotifyMinimumSizeChange (child tomo.Element) {
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element.updateMinimumSize()
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element.redoAll()
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}
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// DrawBackground draws a portion of the container's background pattern within
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// the specified bounds. The container will not push these changes.
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func (element *TableContainer) DrawBackground (bounds image.Rectangle) {
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if !bounds.Overlaps(element.core.Bounds()) { return }
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for rowIndex, row := range element.grid {
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for columnIndex, child := range row {
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if bounds.Overlaps(child.Rectangle) {
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element.theme.Pattern (
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child.Pattern,
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element.state(columnIndex, rowIndex)).
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Draw(canvas.Cut(element.core, bounds), child.Rectangle)
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return
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}}}
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}
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func (element *TableContainer) HandleMouseDown (x, y int, button input.Button) {
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element.Focus()
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element.Propagator.HandleMouseDown(x, y, button)
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if button != input.ButtonLeft { return }
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for rowIndex, row := range element.grid {
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for columnIndex, child := range row {
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if image.Pt(x, y).In(child.Rectangle) {
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element.selectCell(columnIndex, rowIndex)
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return
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}}}
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}
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func (element *TableContainer) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
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switch key {
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case input.KeyLeft: element.changeSelectionBy(-1, 0)
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case input.KeyRight: element.changeSelectionBy(1, 0)
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case input.KeyUp: element.changeSelectionBy(0, -1)
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case input.KeyDown: element.changeSelectionBy(0, 1)
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case input.KeyEscape: element.selectCell(-1, -1)
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default: element.Propagator.HandleKeyDown(key, modifiers)
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}
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}
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// ScrollContentBounds returns the full content size of the element.
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func (element *TableContainer) ScrollContentBounds () image.Rectangle {
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return element.contentBounds
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}
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// ScrollViewportBounds returns the size and position of the element's
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// viewport relative to ScrollBounds.
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func (element *TableContainer) ScrollViewportBounds () image.Rectangle {
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bounds := element.Bounds()
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bounds = bounds.Sub(bounds.Min).Add(element.scroll)
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return bounds
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}
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// ScrollTo scrolls the viewport to the specified point relative to
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// ScrollBounds.
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func (element *TableContainer) ScrollTo (position image.Point) {
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if position.Y < 0 {
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position.Y = 0
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}
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maxScrollHeight := element.maxScrollHeight()
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if position.Y > maxScrollHeight {
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position.Y = maxScrollHeight
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}
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if position.X < 0 {
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position.X = 0
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}
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maxScrollWidth := element.maxScrollWidth()
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if position.X > maxScrollWidth {
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position.X = maxScrollWidth
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}
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element.scroll = position
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if element.core.HasImage() && !element.warping {
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element.redoAll()
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element.core.DamageAll()
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}
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}
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// OnScrollBoundsChange sets a function to be called when the element's viewport
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// bounds, content bounds, or scroll axes change.
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func (element *TableContainer) OnScrollBoundsChange (callback func ()) {
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element.onScrollBoundsChange = callback
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}
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// ScrollAxes returns the supported axes for scrolling.
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func (element *TableContainer) ScrollAxes () (horizontal, vertical bool) {
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return true, true
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}
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func (element *TableContainer) changeSelectionBy (column, row int) {
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column += element.selectedColumn
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row += element.selectedRow
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if column < 0 { column = 0 }
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if row < 0 { row = 0 }
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element.selectCell(column, row)
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}
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func (element *TableContainer) selectCell (column, row int) {
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if column < -1 { column = -1 }
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if row < -1 { row = -1 }
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if column >= element.columns { column = element.columns - 1 }
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if row >= element.rows { row = element.rows - 1 }
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if column == element.selectedColumn && row == element.selectedRow {
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return
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}
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oldColumn, oldRow := element.selectedColumn, element.selectedRow
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element.selectedColumn = column
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element.selectedRow = row
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if oldColumn >= 0 && oldRow >= 0 {
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element.core.DamageRegion(element.redoCell(oldColumn, oldRow))
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}
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if column >= 0 && row >= 0 {
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element.core.DamageRegion(element.redoCell(column, row))
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}
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if element.onSelect != nil {
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element.onSelect()
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}
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}
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func (element *TableContainer) maxScrollHeight () (height int) {
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viewportHeight := element.Bounds().Dy()
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height = element.contentBounds.Dy() - viewportHeight
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if height < 0 { height = 0 }
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return
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}
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func (element *TableContainer) maxScrollWidth () (width int) {
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viewportWidth := element.Bounds().Dx()
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width = element.contentBounds.Dx() - viewportWidth
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if width < 0 { width = 0 }
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return
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}
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func (element *TableContainer) hook (child tomo.Element) {
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if child0, ok := child.(tomo.Themeable); ok {
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child0.SetTheme(element.theme.Theme)
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}
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if child0, ok := child.(tomo.Configurable); ok {
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child0.SetConfig(element.config.Config)
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}
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child.SetParent(element)
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}
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func (element *TableContainer) unhook (child tomo.Element) {
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child.SetParent(nil)
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child.DrawTo(nil, image.Rectangle { }, nil)
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}
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func (element *TableContainer) rebuildChildList (list []tomo.Element) {
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index := 0
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for _, row := range element.grid {
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for _, child := range row {
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if child.Element == nil { continue }
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list[index] = child.Element
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index ++
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}}
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}
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func (element *TableContainer) state (column, row int) (state tomo.State) {
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if column == element.selectedColumn && row == element.selectedRow {
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state.On = true
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}
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return
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}
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|
||||
func (element *TableContainer) redoCell (column, row int) image.Rectangle {
|
||||
padding := element.theme.Padding(tomo.PatternTableCell)
|
||||
cell := element.grid[row][column]
|
||||
pattern := element.theme.Pattern (
|
||||
cell.Pattern, element.state(column, row))
|
||||
|
||||
if cell.Element != nil {
|
||||
// give child canvas portion
|
||||
innerCellBounds := padding.Apply(cell.Rectangle)
|
||||
artist.DrawShatter (
|
||||
element.core, pattern,
|
||||
cell.Rectangle, innerCellBounds)
|
||||
cell.DrawTo (
|
||||
canvas.Cut(element.core, innerCellBounds),
|
||||
innerCellBounds,
|
||||
element.childDrawCallback)
|
||||
} else {
|
||||
// draw cell pattern in empty cells
|
||||
pattern.Draw(element.core, cell.Rectangle)
|
||||
}
|
||||
return cell.Rectangle
|
||||
}
|
||||
|
||||
func (element *TableContainer) redoAll () {
|
||||
if element.warping || !element.core.HasImage() {
|
||||
element.updateMinimumSize()
|
||||
return
|
||||
}
|
||||
|
||||
maxScrollHeight := element.maxScrollHeight()
|
||||
if element.scroll.Y > maxScrollHeight {
|
||||
element.scroll.Y = maxScrollHeight
|
||||
}
|
||||
maxScrollWidth := element.maxScrollWidth()
|
||||
if element.scroll.X > maxScrollWidth {
|
||||
element.scroll.X = maxScrollWidth
|
||||
}
|
||||
|
||||
// calculate the minimum size of each column and row
|
||||
var minWidth, minHeight float64
|
||||
columnWidths := make([]float64, element.columns)
|
||||
rowHeights := make([]float64, element.rows)
|
||||
padding := element.theme.Padding(tomo.PatternTableCell)
|
||||
|
||||
for rowIndex, row := range element.grid {
|
||||
for columnIndex, child := range row {
|
||||
width, height := padding.Horizontal(), padding.Vertical()
|
||||
|
||||
if child.Element != nil {
|
||||
minWidth, minHeight := child.MinimumSize()
|
||||
width += minWidth
|
||||
height += minHeight
|
||||
fwidth := float64(width)
|
||||
fheight := float64(height)
|
||||
if fwidth > columnWidths[columnIndex] {
|
||||
columnWidths[columnIndex] = fwidth
|
||||
}
|
||||
if fheight > rowHeights[rowIndex] {
|
||||
rowHeights[rowIndex] = fheight
|
||||
}
|
||||
}
|
||||
}}
|
||||
for _, width := range columnWidths { minWidth += width }
|
||||
for _, height := range rowHeights { minHeight += height }
|
||||
|
||||
// ignore given bounds for layout if they are below minimum size. we do
|
||||
// this because we are scrollable in both directions and we might be
|
||||
// collapsed.
|
||||
bounds := element.Bounds().Sub(element.scroll)
|
||||
if bounds.Dx() < int(minWidth) {
|
||||
bounds.Max.X = bounds.Min.X + int(minWidth)
|
||||
}
|
||||
if bounds.Dy() < int(minHeight) {
|
||||
bounds.Max.Y = bounds.Min.Y + int(minHeight)
|
||||
}
|
||||
element.contentBounds = bounds
|
||||
|
||||
// scale up those minimum sizes to an actual size.
|
||||
// FIXME: replace this with a more accurate algorithm
|
||||
widthRatio := float64(bounds.Dx()) / minWidth
|
||||
heightRatio := float64(bounds.Dy()) / minHeight
|
||||
for index := range columnWidths {
|
||||
columnWidths[index] *= widthRatio
|
||||
}
|
||||
for index := range rowHeights {
|
||||
rowHeights[index] *= heightRatio
|
||||
}
|
||||
|
||||
// cut up canvas
|
||||
x := float64(bounds.Min.X)
|
||||
y := float64(bounds.Min.Y)
|
||||
for rowIndex, row := range element.grid {
|
||||
for columnIndex, _ := range row {
|
||||
width := columnWidths[columnIndex]
|
||||
height := rowHeights[rowIndex]
|
||||
cellBounds := image.Rect (
|
||||
int(x), int(y),
|
||||
int(x + width), int(y + height))
|
||||
|
||||
var id tomo.Pattern
|
||||
isHeading :=
|
||||
rowIndex == 0 && element.topHeading ||
|
||||
columnIndex == 0 && element.leftHeading
|
||||
if isHeading {
|
||||
id = tomo.PatternTableHead
|
||||
} else {
|
||||
id = tomo.PatternTableCell
|
||||
}
|
||||
element.grid[rowIndex][columnIndex].Rectangle = cellBounds
|
||||
element.grid[rowIndex][columnIndex].Pattern = id
|
||||
|
||||
element.redoCell(columnIndex, rowIndex)
|
||||
x += float64(width)
|
||||
}
|
||||
|
||||
x = float64(bounds.Min.X)
|
||||
y += rowHeights[rowIndex]
|
||||
}
|
||||
|
||||
element.core.DamageAll()
|
||||
|
||||
// update the minimum size of the element
|
||||
if element.forcedMinimumHeight > 0 {
|
||||
minHeight = float64(element.forcedMinimumHeight)
|
||||
}
|
||||
if element.forcedMinimumWidth > 0 {
|
||||
minWidth = float64(element.forcedMinimumWidth)
|
||||
}
|
||||
element.core.SetMinimumSize(int(minWidth), int(minHeight))
|
||||
|
||||
// notify parent of scroll bounds change
|
||||
if parent, ok := element.core.Parent().(tomo.ScrollableParent); ok {
|
||||
parent.NotifyScrollBoundsChange(element)
|
||||
}
|
||||
if element.onScrollBoundsChange != nil {
|
||||
element.onScrollBoundsChange()
|
||||
}
|
||||
}
|
||||
|
||||
func (element *TableContainer) updateMinimumSize () {
|
||||
if element.forcedMinimumHeight > 0 && element.forcedMinimumWidth > 0 {
|
||||
element.core.SetMinimumSize (
|
||||
element.forcedMinimumWidth,
|
||||
element.forcedMinimumHeight)
|
||||
return
|
||||
}
|
||||
|
||||
columnWidths := make([]int, element.columns)
|
||||
rowHeights := make([]int, element.rows)
|
||||
padding := element.theme.Padding(tomo.PatternTableCell)
|
||||
|
||||
for rowIndex, row := range element.grid {
|
||||
for columnIndex, child := range row {
|
||||
width, height := padding.Horizontal(), padding.Vertical()
|
||||
|
||||
if child.Element != nil {
|
||||
minWidth, minHeight := child.MinimumSize()
|
||||
width += minWidth
|
||||
height += minHeight
|
||||
if width > columnWidths[columnIndex] {
|
||||
columnWidths[columnIndex] = width
|
||||
}
|
||||
if height > rowHeights[rowIndex] {
|
||||
rowHeights[rowIndex] = height
|
||||
}
|
||||
}
|
||||
}}
|
||||
|
||||
var minWidth, minHeight int
|
||||
for _, width := range columnWidths { minWidth += width }
|
||||
for _, height := range rowHeights { minHeight += height }
|
||||
|
||||
if element.forcedMinimumHeight > 0 {
|
||||
minHeight = element.forcedMinimumHeight
|
||||
}
|
||||
if element.forcedMinimumWidth > 0 {
|
||||
minWidth = element.forcedMinimumWidth
|
||||
}
|
||||
|
||||
element.core.SetMinimumSize(minWidth, minHeight)
|
||||
}
|
||||
|
||||
func (element *TableContainer) childDrawCallback (region image.Rectangle) {
|
||||
element.core.DamageRegion(region)
|
||||
}
|
||||
@ -103,7 +103,7 @@ func (game *Game) tick () {
|
||||
if game.stamina < 0 {
|
||||
game.stamina = 0
|
||||
}
|
||||
|
||||
|
||||
tomo.Do(game.Invalidate)
|
||||
if statUpdate && game.onStatUpdate != nil {
|
||||
tomo.Do(game.onStatUpdate)
|
||||
|
||||
@ -57,12 +57,13 @@ func run () {
|
||||
topBar.Adopt(elements.NewLabel("Health:"))
|
||||
topBar.AdoptExpand(healthBar)
|
||||
container.Adopt(topBar)
|
||||
container.AdoptExpand(game)
|
||||
container.AdoptExpand(game.Raycaster)
|
||||
game.Focus()
|
||||
|
||||
game.OnStatUpdate (func () {
|
||||
staminaBar.SetProgress(game.Stamina())
|
||||
})
|
||||
game.Start()
|
||||
|
||||
window.OnClose(tomo.Stop)
|
||||
window.Show()
|
||||
|
||||
@ -138,6 +138,8 @@ func (element *Raycaster) Focus () {
|
||||
element.entity.Focus()
|
||||
}
|
||||
|
||||
func (element *Raycaster) SetEnabled (bool) { }
|
||||
|
||||
func (element *Raycaster) Enabled () bool { return true }
|
||||
|
||||
func (element *Raycaster) HandleFocusChange () { }
|
||||
|
||||
Reference in New Issue
Block a user