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Added a Warp method to Container for batch updates

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This commit is contained in:
Sasha Koshka
2023-01-12 16:02:33 -05:00
parent 9710e57b2b
commit 588c52b30a
2 changed files with 72 additions and 31 deletions
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43
elements/basic/container.go
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@@ -6,16 +6,19 @@ import "git.tebibyte.media/sashakoshka/tomo/theme"
import "git.tebibyte.media/sashakoshka/tomo/artist"
import "git.tebibyte.media/sashakoshka/tomo/elements/core"
// Container is an element capable of containg other elements, and arranging
// them in a layout.
type Container struct {
*core.Core
core core.CoreControl
layout tomo.Layout
children []tomo.LayoutEntry
drags [10]tomo.Element
layout tomo.Layout
children []tomo.LayoutEntry
drags [10]tomo.Element
warping bool
}
// NewContainer creates a new container.
func NewContainer (layout tomo.Layout) (element *Container) {
element = &Container { }
element.Core, element.core = core.NewCore(element)
@@ -23,6 +26,7 @@ func NewContainer (layout tomo.Layout) (element *Container) {
return
}
// SetLayout sets the layout of this container.
func (element *Container) SetLayout (layout tomo.Layout) {
element.layout = layout
if element.core.HasImage() {
@@ -32,6 +36,9 @@ func (element *Container) SetLayout (layout tomo.Layout) {
}
}
// Adopt adds a new child element to the container. If expand is set to true,
// the element will expand (instead of contract to its minimum size), in
// whatever way is defined by the current layout.
func (element *Container) Adopt (child tomo.Element, expand bool) {
child.SetParentHooks (tomo.ParentHooks {
MinimumSizeChange: func (int, int) {
@@ -61,6 +68,29 @@ func (element *Container) Adopt (child tomo.Element, expand bool) {
element.updateMinimumSize()
element.updateSelectable()
if element.core.HasImage() && !element.warping {
element.recalculate()
element.draw()
element.core.PushAll()
}
}
// Warp runs the specified callback, deferring all layout and rendering updates
// until the callback has finished executing. This allows for aplications to
// perform batch gui updates without flickering and stuff.
func (element *Container) Warp (callback func ()) {
if element.warping {
callback()
return
}
element.warping = true
callback()
element.warping = false
// TODO: create some sort of task list so we don't do a full recalculate
// and redraw every time, because although that is the most likely use
// case, it is not the only one.
if element.core.HasImage() {
element.recalculate()
element.draw()
@@ -83,7 +113,7 @@ func (element *Container) Disown (child tomo.Element) {
element.updateMinimumSize()
element.updateSelectable()
if element.core.HasImage() {
if element.core.HasImage() && !element.warping {
element.recalculate()
element.draw()
element.core.PushAll()
@@ -96,7 +126,7 @@ func (element *Container) DisownAll () {
element.updateMinimumSize()
element.updateSelectable()
if element.core.HasImage() {
if element.core.HasImage() && !element.warping {
element.recalculate()
element.draw()
element.core.PushAll()
@@ -300,6 +330,7 @@ func (element *Container) draw () {
}
func (element *Container) drawChildRegion (child tomo.Element, region tomo.Image) {
if element.warping { return }
for _, entry := range element.children {
if entry.Element == child {
artist.Paste(element.core, region, entry.Position)