Propagate mouse motion events to boxes

This makes window-level keybinds possible. Exciting!

go.mod

@@ -3,7 +3,7 @@ module git.tebibyte.media/tomo/backend
 go 1.20
 
 require (
-	git.tebibyte.media/tomo/tomo v0.41.0
+	git.tebibyte.media/tomo/tomo v0.41.1
 	git.tebibyte.media/tomo/typeset v0.7.1
 	git.tebibyte.media/tomo/xgbkb v1.0.1
 	github.com/jezek/xgb v1.1.1

go.sum

@@ -1,6 +1,6 @@
 git.tebibyte.media/sashakoshka/xgbkb v1.0.0/go.mod h1:pNcE6TRO93vHd6q42SdwLSTTj25L0Yzggz7yLe0JV6Q=
-git.tebibyte.media/tomo/tomo v0.41.0 h1:Z+7FHhbGiKjs+kQNvuJOfz47xIct5qxvSJqyDuoNIOs=
-git.tebibyte.media/tomo/tomo v0.41.0/go.mod h1:C9EzepS9wjkTJjnZaPBh22YvVPyA4hbBAJVU20Rdmps=
+git.tebibyte.media/tomo/tomo v0.41.1 h1:XdbyF3VjsLj1Zppr70gUaufuh49hU32JQo2ENnw4PcA=
+git.tebibyte.media/tomo/tomo v0.41.1/go.mod h1:C9EzepS9wjkTJjnZaPBh22YvVPyA4hbBAJVU20Rdmps=
 git.tebibyte.media/tomo/typeset v0.7.1 h1:aZrsHwCG5ZB4f5CruRFsxLv5ezJUCFUFsQJJso2sXQ8=
 git.tebibyte.media/tomo/typeset v0.7.1/go.mod h1:PwDpSdBF3l/EzoIsa2ME7QffVVajnTHZN6l3MHEGe1g=
 git.tebibyte.media/tomo/xgbkb v1.0.1 h1:b3HDUopjdQp1MZrb5Vpil4bOtk3NnNXtfQW27Blw2kE=

internal/system/boxquerier.go

@@ -20,6 +20,7 @@ func (querier boxQuerier) RecommendedWidth (index int, height int) int {
 		if box, ok := box.(anyContentBox); ok {
 			return box.recommendedWidth(height)
 		}
+		return box.minimumSize().X
 	}
 	return 0
 }
@@ -29,6 +30,7 @@ func (querier boxQuerier) RecommendedHeight (index int, width int) int {
 		if box, ok := box.(anyContentBox); ok {
 			return box.recommendedHeight(width)
 		}
+		return box.minimumSize().Y
 	}
 	return 0
 }

internal/system/containerbox.go

@@ -173,6 +173,7 @@ func (this *containerBox) setAttr (attr tomo.Attr, user bool) {
 	case tomo.AttrOverflow:
 		if this.attrOverflow.Set(attr, user) {
 			this.invalidateLayout()
+			this.invalidateMinimum()
 		}
 		
 	case tomo.AttrLayout:
@@ -187,7 +188,7 @@ func (this *containerBox) setAttr (attr tomo.Attr, user bool) {
 
 func (this *containerBox) recommendedHeight (width int) int {
 	layout := this.attrLayout.Value().Layout
-	if layout == nil || this.attrOverflow.Value().Y {
+	if layout == nil || !this.attrOverflow.Value().Y {
 		return this.minSize.Value().Y
 	} else {
 		return layout.RecommendedHeight(this.layoutHints(), this.boxQuerier(), width) +
@@ -197,7 +198,7 @@ func (this *containerBox) recommendedHeight (width int) int {
 
 func (this *containerBox) recommendedWidth (height int) int {
 	layout := this.attrLayout.Value().Layout
-	if layout == nil || this.attrOverflow.Value().X {
+	if layout == nil || !this.attrOverflow.Value().X {
 		return this.minSize.Value().X
 	} else {
 		return layout.RecommendedWidth(this.layoutHints(), this.boxQuerier(), height) +

internal/system/event.go

@@ -3,7 +3,6 @@ package system
 import "image"
 import "git.tebibyte.media/tomo/tomo/input"
 
-// TODO: redo all of this because there are new event propogation rules
 // TODO: once go v1.23 comes out, replace the explicit iterator calls here with
 // range loops
 
@@ -25,6 +24,7 @@ func (this *Hierarchy) HandleModifiers (modifiers input.Modifiers) {
 // HandleModifiers must be called *before* HandleKeyDown.
 func (this *Hierarchy) HandleKeyDown (key input.Key, numberPad bool) {
 	caught := false
+	if this.anyFocused() {
 		this.keyboardTargets(func (target anyBox) bool {
 			if target.handleKeyDown(key, numberPad) {
 				caught = true
@@ -32,14 +32,22 @@ func (this *Hierarchy) HandleKeyDown (key input.Key, numberPad bool) {
 			}
 			return true
 		})
+	} else {
+		if this.root != nil {
+			caught = this.root.handleKeyDown(key, numberPad)
+		}
+	}
 	if caught { return }
 
-	if key == input.KeyTab && this.modifiers.Alt {
+	switch key {
+	case input.KeyTab:
 		if this.modifiers.Shift {
 			this.focusPrevious()
 		} else {
 			this.focusNext()
 		}
+	case input.KeyUp:   this.focusPrevious()
+	case input.KeyDown: this.focusNext()
 	}
 }
 
@@ -47,12 +55,18 @@ func (this *Hierarchy) HandleKeyDown (key input.Key, numberPad bool) {
 // which triggers this comes with modifier key information, HandleModifiers must
 // be called *before* HandleKeyUp.
 func (this *Hierarchy) HandleKeyUp (key input.Key, numberPad bool) {
+	if this.anyFocused() {
 		this.keyboardTargets(func (target anyBox) bool {
 			if target.handleKeyUp(key, numberPad) {
 				return false
 			}
 			return true
 		})
+	} else {
+		if this.root != nil {
+			this.root.handleKeyUp(key, numberPad)
+		}
+	}
 }
 
 // HandleMouseDown sends a mouse down event to the Boxes positioned underneath
@@ -101,17 +115,18 @@ func (this *Hierarchy) HandleMouseMove (position image.Point) {
 	for _, dragSet := range this.drags {
 		for _, box := range dragSet {
 			if box.handleMouseMove() { break }
-		}
 			dragged = true
 		}
+	}
 	if dragged { return }
 
 	// TODO we can hover over multiple boxes at once. however, any way of
 	// detecting this involves several slice allocations every time we
 	// process a MouseMove event. perhaps we just ought to suck it up and do
-	// it.
+	// it. or perhaps doing *this* is the better way? we may never know.
 	box := this.boxUnder(position)
 	if box != nil {
+		box := this.considerMaskingParents(box)
 		this.hover(box)
 		box.handleMouseMove()
 	}

internal/system/textbox.go

@@ -167,6 +167,7 @@ func (this *textBox) setAttr (attr tomo.Attr, user bool) {
 		
 	case tomo.AttrOverflow:
 		if this.attrOverflow.Set(attr, user) {
+			this.invalidateMinimum()
 			this.invalidateLayout()
 		}
 		
@@ -248,14 +249,18 @@ func (this *textBox) textOffset () image.Point {
 		Sub(this.drawer.LayoutBoundsSpace().Min)
 }
 
+func (this *textBox) handleFocusEnter () {
+	this.invalidateDraw()
+	this.box.handleFocusEnter()
+}
+
 func (this *textBox) handleFocusLeave () {
-	this.on.dotChange.Broadcast()
 	this.invalidateDraw()
 	this.box.handleFocusLeave()
 }
 
 func (this *textBox) handleMouseDown (button input.Button) bool {
-	if button == input.ButtonLeft {
+	if this.mouseButtonCanDrag(button) {
 		index           := this.runeUnderMouse()
 		this.selectStart = index
 		this.selecting   = true
@@ -265,7 +270,7 @@ func (this *textBox) handleMouseDown (button input.Button) bool {
 }
 
 func (this *textBox) handleMouseUp (button input.Button) bool {
-	if button == input.ButtonLeft && this.selecting {
+	if this.mouseButtonCanDrag(button) && this.selecting {
 		index         := this.runeUnderMouse()
 		this.selecting = false
 		this.Select(text.Dot { Start: this.selectStart, End: index })
@@ -273,6 +278,12 @@ func (this *textBox) handleMouseUp (button input.Button) bool {
 	return this.box.handleMouseUp(button)
 }
 
+func (this *textBox) mouseButtonCanDrag (button input.Button) bool {
+	 return button == input.ButtonLeft   ||
+	 	button == input.ButtonMiddle ||
+	 	button == input.ButtonRight
+}
+
 func (this *textBox) handleMouseMove () bool {
 	if this.selecting {
 		index := this.runeUnderMouse()