atomize-element-interface #2
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@ -27,46 +27,47 @@ func NewCore (parent tomo.Element) (core *Core, control CoreControl) {
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return
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}
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func (core Core) ColorModel () (model color.Model) {
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func (core *Core) ColorModel () (model color.Model) {
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return color.RGBAModel
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}
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func (core Core) At (x, y int) (pixel color.Color) {
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func (core *Core) At (x, y int) (pixel color.Color) {
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return core.canvas.At(x, y)
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}
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func (core Core) Bounds () (bounds image.Rectangle) {
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func (core *Core) Bounds () (bounds image.Rectangle) {
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return core.canvas.Bounds()
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}
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func (core Core) Set (x, y int, c color.Color) () {
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func (core *Core) Set (x, y int, c color.Color) () {
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core.canvas.Set(x, y, c)
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}
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func (core Core) Buffer () (data []color.RGBA, stride int) {
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func (core *Core) Buffer () (data []color.RGBA, stride int) {
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return core.canvas.Buffer()
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}
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func (core Core) Selectable () (selectable bool) {
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return core.selectable
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func (core *Core) MinimumSize () (width, height int) {
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return core.metrics.minimumWidth, core.metrics.minimumHeight
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}
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func (core Core) Selected () (selected bool) {
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return core.selected
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func (core *Core) Resize (width, height int) {
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if width < core.metrics.minimumWidth {
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width = core.metrics.minimumWidth
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}
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if height < core.metrics.minimumHeight {
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height = core.metrics.minimumHeight
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}
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bounds := core.canvas.Bounds()
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if width != bounds.Dx() || height != bounds.Dy() {
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core.canvas = tomo.NewBasicCanvas(width, height)
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}
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func (core Core) AdvanceSelection (direction int) (ok bool) {
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return
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}
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func (core *Core) SetParentHooks (hooks tomo.ParentHooks) {
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core.hooks = hooks
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}
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func (core Core) MinimumSize () (width, height int) {
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return core.metrics.minimumWidth, core.metrics.minimumHeight
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}
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// CoreControl is a struct that can exert control over a control struct. It can
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// be used as a canvas. It must not be directly embedded into an element, but
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// instead kept as a private member.
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@ -79,22 +80,6 @@ func (control CoreControl) HasImage () (empty bool) {
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return !control.Bounds().Empty()
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}
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func (control CoreControl) Select () (granted bool) {
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return control.core.hooks.RunSelectionRequest()
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}
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func (control CoreControl) SetSelected (selected bool) {
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if !control.core.selectable { return }
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control.core.selected = selected
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}
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func (control CoreControl) SetSelectable (selectable bool) {
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if control.core.selectable == selectable { return }
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control.core.selectable = selectable
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if !selectable { control.core.selected = false }
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control.core.hooks.RunSelectabilityChange(selectable)
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}
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func (control CoreControl) PushRegion (bounds image.Rectangle) {
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control.core.hooks.RunDraw(tomo.Cut(control, bounds))
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}
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@ -123,17 +108,14 @@ func (control CoreControl) SetMinimumSize (width, height int) {
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// if there is an image buffer, and the current size is less
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// than this new minimum size, send core.parent a resize event.
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if control.HasImage() {
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bounds := control.Bounds()
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imageWidth,
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imageHeight,
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constrained := control.ConstrainSize (
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bounds.Dx(),
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bounds.Dy())
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constrained := control.ConstrainSize(bounds.Dx(), bounds.Dy())
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if constrained {
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core.parent.Handle (tomo.EventResize {
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Width: imageWidth,
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Height: imageHeight,
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})
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core.parent.Resize(imageWidth, imageHeight)
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}
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}
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}
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