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// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
// Use of this source code is governed by the GPL 3.0
package main
import (
"github.com/awesome-gocui/gocui"
"go.wit.com/widget"
)
/*
gocui defines the offset like this:
width -> increases to the right
---------------------------------- hieght
| H = 1 | increases
| | |
| W = 1 W = 18 | |
| | v
| H = 5 | downwards
-------------------------------------
*/
// change over to this name
// returns all the widgets under (X,H) that are visible
func findByXY(w int, h int) []*guiWidget {
rootW := me.treeRoot.TK.(*guiWidget)
// this searches the binary tree recursively (function is right below)
return findByXYreal(rootW, w, h)
}
// this checks a widget to see if it is under (W,H), then checks the widget's children
// anything that matches is passed back as an array of widgets
func findByXYreal(widget *guiWidget, w int, h int) []*guiWidget {
var widgets []*guiWidget
if !widget.Visible() {
// ignore widgets that are not visible
} else {
// check the location to see if this is under (W,H)
// if it is, return this widget
if (widget.gocuiSize.w0 <= w) && (w <= widget.gocuiSize.w1) &&
(widget.gocuiSize.h0 <= h) && (h <= widget.gocuiSize.h1) {
widgets = append(widgets, widget)
// log.Log(GOCUI, "findByXY() found", widget.WidgetType, w, h)
}
}
// search through the children widgets in the binary tree
for _, child := range widget.children {
widgets = append(widgets, findByXYreal(child, w, h)...)
}
return widgets
}
// returns the "highest priority widget under the mouse
func findUnderMouse() *guiWidget {
w, h := me.baseGui.MousePosition()
widgets := findByXY(w, h)
// search through all the widgets that were below the mouse click
var found *guiWidget
for _, w := range widgets {
// prioritize window buttons. This means if some code covers
// up the window widgets, then it will ignore everything else
// and allow the user (hopefully) to redraw or switch windows
// TODO: display the window widgets on top
if w.WidgetType == widget.Window {
return w
}
}
// return anything else that is interactive
for _, w := range widgets {
if w.WidgetType == widget.Button {
return w
}
if w.WidgetType == widget.Combobox {
return w
}
if w.WidgetType == widget.Checkbox {
return w
}
w.showWidgetPlacement("findUnderMouse() found something unknown")
found = w
}
// maybe something else was found
return found
}
// panics. todo: fix ctrl-mouse click?
// find the widget under the mouse click
func ctrlDown(g *gocui.Gui, v *gocui.View) error {
var found *guiWidget
// var widgets []*node
// var f func (n *node)
found = findUnderMouse()
if me.ctrlDown == nil {
setupCtrlDownWidget()
var tk *guiWidget
tk = me.ctrlDown.TK.(*guiWidget)
tk.labelN = found.String()
tk.cuiName = "ctrlDown"
// me.ctrlDown.parent = me.rootNode
}
var tk *guiWidget
tk = me.ctrlDown.TK.(*guiWidget)
if found == nil {
found = me.treeRoot.TK.(*guiWidget)
}
tk.labelN = found.String()
newR := found.realGocuiSize()
tk.gocuiSize.w0 = newR.w0
tk.gocuiSize.h0 = newR.h0
tk.gocuiSize.w1 = newR.w1
tk.gocuiSize.h1 = newR.h1
return nil
}
|
