Moved the layouts directory out of elements because they aren't.
This commit is contained in:
150
layouts/dialog.go
Normal file
150
layouts/dialog.go
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@@ -0,0 +1,150 @@
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package layouts
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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/theme"
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type Dialog struct {
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// If Gap is true, a gap will be placed between each element.
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Gap bool
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// If Pad is true, there will be padding running along the inside of the
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// layout's border.
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Pad bool
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}
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// Arrange arranges a list of entries into a dialog.
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func (layout Dialog) Arrange (entries []tomo.LayoutEntry, width, height int) {
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if layout.Pad {
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width -= theme.Padding() * 2
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height -= theme.Padding() * 2
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}
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controlRowWidth, controlRowHeight := 0, 0
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if len(entries) > 1 {
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controlRowWidth,
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controlRowHeight = layout.minimumSizeOf(entries[1:])
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}
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if len(entries) > 0 {
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entries[0].Position = image.Point { }
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if layout.Pad {
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entries[0].Position.X += theme.Padding()
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entries[0].Position.Y += theme.Padding()
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}
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mainHeight := height - controlRowHeight
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if layout.Gap {
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mainHeight -= theme.Padding()
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}
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mainBounds := entries[0].Bounds()
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if mainBounds.Dy() != mainHeight ||
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mainBounds.Dx() != width {
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entries[0].Handle (tomo.EventResize {
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Width: width,
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Height: mainHeight,
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})
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}
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}
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if len(entries) > 1 {
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freeSpace := width
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expandingElements := 0
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// count the number of expanding elements and the amount of free
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// space for them to collectively occupy
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for index, entry := range entries[1:] {
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if entry.Expand {
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expandingElements ++
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} else {
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entryMinWidth, _ := entry.MinimumSize()
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freeSpace -= entryMinWidth
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}
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if index > 0 && layout.Gap {
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freeSpace -= theme.Padding()
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}
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}
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expandingElementWidth := 0
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if expandingElements > 0 {
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expandingElementWidth = freeSpace / expandingElements
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}
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// determine starting position and dimensions for control row
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x, y := 0, height - controlRowHeight
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if expandingElements == 0 {
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x = width - controlRowWidth
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}
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if layout.Pad {
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x += theme.Padding()
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y += theme.Padding()
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}
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height -= controlRowHeight
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// set the size and position of each element in the control row
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for index, entry := range entries[1:] {
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if index > 0 && layout.Gap { x += theme.Padding() }
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entries[index + 1].Position = image.Pt(x, y)
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entryWidth := 0
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if entry.Expand {
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entryWidth = expandingElementWidth
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} else {
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entryWidth, _ = entry.MinimumSize()
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}
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x += entryWidth
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entryBounds := entry.Bounds()
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if entryBounds.Dy() != controlRowHeight ||
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entryBounds.Dx() != entryWidth {
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entry.Handle (tomo.EventResize {
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Width: entryWidth,
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Height: controlRowHeight,
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})
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}
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}
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}
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}
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// MinimumSize returns the minimum width and height that will be needed to
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// arrange the given list of entries.
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func (layout Dialog) MinimumSize (entries []tomo.LayoutEntry) (width, height int) {
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if len(entries) > 0 {
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mainChildHeight := 0
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width, mainChildHeight = entries[0].MinimumSize()
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height += mainChildHeight
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}
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if len(entries) > 1 {
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if layout.Gap { height += theme.Padding() }
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additionalWidth,
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additionalHeight := layout.minimumSizeOf(entries[1:])
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height += additionalHeight
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if additionalWidth > width {
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width = additionalWidth
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}
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}
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if layout.Pad {
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width += theme.Padding() * 2
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height += theme.Padding() * 2
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}
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return
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}
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func (layout Dialog) minimumSizeOf (
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entries []tomo.LayoutEntry,
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) (
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width, height int,
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) {
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for index, entry := range entries {
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entryWidth, entryHeight := entry.MinimumSize()
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if entryHeight > height {
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height = entryHeight
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}
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width += entryWidth
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if layout.Gap && index > 0 {
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width += theme.Padding()
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}
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}
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return
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}
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93
layouts/horizontal.go
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93
layouts/horizontal.go
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@@ -0,0 +1,93 @@
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package layouts
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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/theme"
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// Horizontal arranges elements horizontally. Elements at the start of the entry
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// list will be positioned on the left, and elements at the end of the entry
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// list will positioned on the right. All elements have the same height.
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type Horizontal struct {
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// If Gap is true, a gap will be placed between each element.
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Gap bool
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// If Pad is true, there will be padding running along the inside of the
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// layout's border.
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Pad bool
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}
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// Arrange arranges a list of entries horizontally.
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func (layout Horizontal) Arrange (entries []tomo.LayoutEntry, width, height int) {
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if layout.Pad {
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width -= theme.Padding() * 2
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height -= theme.Padding() * 2
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}
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freeSpace := width
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expandingElements := 0
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// count the number of expanding elements and the amount of free space
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// for them to collectively occupy
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for index, entry := range entries {
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if entry.Expand {
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expandingElements ++
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} else {
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entryMinWidth, _ := entry.MinimumSize()
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freeSpace -= entryMinWidth
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}
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if index > 0 && layout.Gap {
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freeSpace -= theme.Padding()
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}
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}
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expandingElementWidth := 0
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if expandingElements > 0 {
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expandingElementWidth = freeSpace / expandingElements
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}
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x, y := 0, 0
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if layout.Pad {
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x += theme.Padding()
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y += theme.Padding()
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}
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// set the size and position of each element
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for index, entry := range entries {
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if index > 0 && layout.Gap { x += theme.Padding() }
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entries[index].Position = image.Pt(x, y)
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entryWidth := 0
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if entry.Expand {
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entryWidth = expandingElementWidth
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} else {
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entryWidth, _ = entry.MinimumSize()
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}
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x += entryWidth
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entryBounds := entry.Bounds()
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if entryBounds.Dy() != height || entryBounds.Dx() != entryWidth {
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entry.Handle (tomo.EventResize {
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Width: entryWidth,
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Height: height,
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})
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}
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}
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}
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// MinimumSize returns the minimum width and height that will be needed to
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// arrange the given list of entries.
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func (layout Horizontal) MinimumSize (entries []tomo.LayoutEntry) (width, height int) {
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for index, entry := range entries {
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entryWidth, entryHeight := entry.MinimumSize()
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if entryHeight > height {
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height = entryHeight
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}
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width += entryWidth
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if layout.Gap && index > 0 {
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width += theme.Padding()
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}
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}
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if layout.Pad {
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width += theme.Padding() * 2
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height += theme.Padding() * 2
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}
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return
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}
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94
layouts/vertical.go
Normal file
94
layouts/vertical.go
Normal file
@@ -0,0 +1,94 @@
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package layouts
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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/theme"
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// Vertical arranges elements vertically. Elements at the start of the entry
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// list will be positioned at the top, and elements at the end of the entry list
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// will positioned at the bottom. All elements have the same width.
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type Vertical struct {
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// If Gap is true, a gap will be placed between each element.
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Gap bool
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// If Pad is true, there will be padding running along the inside of the
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// layout's border.
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Pad bool
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}
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// Arrange arranges a list of entries vertically.
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func (layout Vertical) Arrange (entries []tomo.LayoutEntry, width, height int) {
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if layout.Pad {
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width -= theme.Padding() * 2
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height -= theme.Padding() * 2
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}
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freeSpace := height
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expandingElements := 0
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// count the number of expanding elements and the amount of free space
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// for them to collectively occupy
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for index, entry := range entries {
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if entry.Expand {
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expandingElements ++
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} else {
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_, entryMinHeight := entry.MinimumSize()
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freeSpace -= entryMinHeight
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}
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if index > 0 && layout.Gap {
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freeSpace -= theme.Padding()
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}
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}
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expandingElementHeight := 0
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if expandingElements > 0 {
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expandingElementHeight = freeSpace / expandingElements
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}
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x, y := 0, 0
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if layout.Pad {
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x += theme.Padding()
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y += theme.Padding()
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}
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// set the size and position of each element
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for index, entry := range entries {
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if index > 0 && layout.Gap { y += theme.Padding() }
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entries[index].Position = image.Pt(x, y)
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entryHeight := 0
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if entry.Expand {
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entryHeight = expandingElementHeight
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} else {
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_, entryHeight = entry.MinimumSize()
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}
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y += entryHeight
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entryBounds := entry.Bounds()
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if entryBounds.Dx() != width || entryBounds.Dy() != entryHeight {
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// println(entryHeight)
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entry.Handle (tomo.EventResize {
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Width: width,
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Height: entryHeight,
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})
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}
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}
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}
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// MinimumSize returns the minimum width and height that will be needed to
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// arrange the given list of entries.
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func (layout Vertical) MinimumSize (entries []tomo.LayoutEntry) (width, height int) {
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for index, entry := range entries {
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entryWidth, entryHeight := entry.MinimumSize()
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if entryWidth > width {
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width = entryWidth
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}
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height += entryHeight
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if layout.Gap && index > 0 {
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height += theme.Padding()
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}
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}
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if layout.Pad {
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width += theme.Padding() * 2
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height += theme.Padding() * 2
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}
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return
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}
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