gocui/eventMouse.go

// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
// Use of this source code is governed by the GPL 3.0

package main

import (
	"errors"
	"fmt"

	"github.com/awesome-gocui/gocui"

	"go.wit.com/log"
	"go.wit.com/widget"
)

func mouseUp(g *gocui.Gui, v *gocui.View) error {
	w, h := g.MousePosition()

	// useful to debug everything that is being clicked on
	/*
		for _, tk := range findByXY(w, h) {
			tk.dumpWidget("mouseUp()")
		}
	*/

	log.Info("mouseUp() setting me.globalMouseDown = false")
	me.globalMouseDown = false
	currentDrag = nil

	dropdownUnclicked(w, h)

	return nil
}

// this is where you have to figure out what
// widget was underneath so you can active
// the right response for the toolkit user's app
func mouseDown(g *gocui.Gui, v *gocui.View) error {
	mx, my := g.MousePosition()
	log.Info("mouseDown() setting globalMouseDown = true")
	me.globalMouseDown = true

	var found bool = false
	for _, tk := range findByXY(mx, my) {
		tk.dumpWidget("mouseDown()")
		if tk.node.WidgetType == widget.Button {
			log.Info("SENDING CLICK TO Button")
			tk.doWidgetClick(mx, my)
			return nil
		}
		if tk.node.WidgetType == widget.Checkbox {
			log.Info("SENDING CLICK TO Checkbox")
			tk.doWidgetClick(mx, my)
			return nil
		}
		found = true
	}
	for _, tk := range findByXY(mx, my) {
		if tk.node.WidgetType == widget.Window {
			tk.dragW = mx - tk.gocuiSize.w0
			tk.dragH = my - tk.gocuiSize.h0
			if (mx-tk.gocuiSize.w0 < 3) && (my-tk.gocuiSize.h0 < 3) {
				log.Info("RESIZE WINDOW", tk.dragW, tk.dragH)
			}
			log.Info("SENDING CLICK TO WINDOW", tk.dragW, tk.dragH)
			tk.doWidgetClick(mx-tk.dragW, my-tk.dragH)
			return nil
		}
		if tk.node.WidgetType == widget.Label {
			log.Info("IGNORE LABLE")
			found = false
			log.Info("setting mousedown to true for label")
			// msgMouseDown = true
			return nil
		}
		/*
			if tk.node.WidgetType == widget.Label {
				log.Info("SENDING CLICK TO Label")
				tk.doWidgetClick(mx, my)
				return nil
			}
		*/
		found = true
	}
	if !found {
		log.Log(GOCUI, fmt.Sprintf("mouseDown() found nothing at (%d,%d)", mx, my))
	}

	vx0, vy0, vx1, vy1, err := g.ViewPosition("msg")
	if err == nil {
		if mx >= vx0 && mx <= vx1 && my >= vy0 && my <= vy1 {
			return msgDown(g, v)
		}
	}

	maxX, _ := g.Size()

	// why was this here?
	// findUnderMouse()

	// TODO: USE THIS TO MAKE TEMPORARY HELP / INSTRUCTION DIALOGS

	// this message will pop up when you click on the magic thing
	// figure out how this works and make it generically useful.
	msg := fmt.Sprintf("This is -222 widget demo. %d,%d", mx, my)
	// dropdownClicked(mx, my)
	x := mx - len(msg)/2
	if x < 0 {
		x = 0
	} else if x+len(msg)+1 > maxX-1 {
		x = maxX - 1 - len(msg) - 1
	}
	log.Log(GOCUI, "mouseDown() about to write out message to 'globalDown' view. msg =", msg)
	if v, err := g.SetView("globalDown", x, my-1, x+len(msg)+1, my+1, 0); err != nil {
		if !errors.Is(err, gocui.ErrUnknownView) {
			return err
		}
		v.WriteString(msg)
	}
	return nil
}

// this needs to go
// event triggers when you push down on a mouse button
func msgDown(g *gocui.Gui, v *gocui.View) error {
	w, h := g.MousePosition()

	for _, tk := range findByXY(w, h) {
		tk.dumpWidget("msgDown()")
	}

	vx, vy, _, _, err := g.ViewPosition("msg")
	if err == nil {
		me.stdout.mouseOffsetW = w - vx
		me.stdout.mouseOffsetH = h - vy
	}

	// did the user click in the corner of the stdout window? If so, resize the window.
	cornerW := w - vx
	cornerH := h - vy
	if (me.stdout.w-cornerW < 4) && (me.stdout.h-cornerH < 4) {
		log.Info("Resize msg", cornerW, cornerH)
		me.stdout.resize = true
	} else {
		log.Info("not Resize msg", cornerW, cornerH)
		me.stdout.resize = false
	}
	log.Info("setting mousedown to true for msg")
	// msgMouseDown = true
	return nil
}