tomo/tomo-old
tomo/tomo-old
Archived
2
1
Fork 0
Code Issues Pull Requests Packages Projects Releases 3 Wiki Activity

I changed my mind, having core fulfill Element is a bad idea.

Browse Source
This commit is contained in:
Sasha Koshka 2023-01-15 23:58:23 -05:00
parent 01d8b64b24
commit 88f5cf7749
1 changed files with 23 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
elements/core/core.go
View File

@ -27,43 +27,39 @@ func NewCore (parent tomo.Element) (core *Core, control CoreControl) {
return
}
// ColorModel fulfills the draw.Image interface.
func (core *Core) ColorModel () (model color.Model) {
return color.RGBAModel
}
// ColorModel fulfills the draw.Image interface.
func (core *Core) At (x, y int) (pixel color.Color) {
return core.canvas.At(x, y)
}
// ColorModel fulfills the draw.Image interface.
func (core *Core) Bounds () (bounds image.Rectangle) {
return core.canvas.Bounds()
}
// ColorModel fulfills the draw.Image interface.
func (core *Core) Set (x, y int, c color.Color) () {
core.canvas.Set(x, y, c)
}
// Buffer fulfills the tomo.Canvas interface.
func (core *Core) Buffer () (data []color.RGBA, stride int) {
return core.canvas.Buffer()
}
// MinimumSize fulfils the tomo.Element interface. This should not need to be
// overridden.
func (core *Core) MinimumSize () (width, height int) {
return core.metrics.minimumWidth, core.metrics.minimumHeight
}
func (core *Core) Resize (width, height int) {
if width < core.metrics.minimumWidth {
width = core.metrics.minimumWidth
}
if height < core.metrics.minimumHeight {
height = core.metrics.minimumHeight
}
bounds := core.canvas.Bounds()
if width != bounds.Dx() || height != bounds.Dy() {
core.canvas = tomo.NewBasicCanvas(width, height)
}
}
// SetParentHooks fulfils the tomo.Element interface. This should not need to be
// overridden.
func (core *Core) SetParentHooks (hooks tomo.ParentHooks) {
core.hooks = hooks
}
@ -76,25 +72,33 @@ type CoreControl struct {
core *Core
}
func (control CoreControl) HasImage () (empty bool) {
// HasImage returns true if the core has an allocated image buffer, and false if
// it doesn't.
func (control CoreControl) HasImage () (has bool) {
return !control.Bounds().Empty()
}
// PushRegion pushes the selected region of pixels to the parent element. This
// does not need to be called when responding to a resize event.
func (control CoreControl) PushRegion (bounds image.Rectangle) {
control.core.hooks.RunDraw(tomo.Cut(control, bounds))
}
// PushAll pushes all pixels to the parent element. This does not need to be
// called when responding to a resize event.
func (control CoreControl) PushAll () {
control.PushRegion(control.Bounds())
}
// AllocateCanvas resizes the canvas.
func (control *CoreControl) AllocateCanvas (width, height int) {
core := control.core
width, height, _ = control.ConstrainSize(width, height)
core.canvas = tomo.NewBasicCanvas(width, height)
control.BasicCanvas = core.canvas
control.core.canvas = tomo.NewBasicCanvas(width, height)
control.BasicCanvas = control.core.canvas
}
// SetMinimumSize sets the minimum size of this element, notifying the parent
// element in the process.
func (control CoreControl) SetMinimumSize (width, height int) {
core := control.core
if width == core.metrics.minimumWidth &&
@ -119,6 +123,8 @@ func (control CoreControl) SetMinimumSize (width, height int) {
}
}
// ConstrainSize contstrains the specified width and height to the minimum width
// and height, and returns wether or not anything ended up being constrained.
func (control CoreControl) ConstrainSize (
inWidth, inHeight int,
) (