new-gui/toolkit/gocui/mouse.go

105 lines
2.3 KiB
Go

// Copyright 2014 The gocui Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"errors"
"github.com/awesome-gocui/gocui"
)
func MouseMain() {
g, err := gocui.NewGui(gocui.OutputNormal, true)
if err != nil {
panic(err)
}
defer g.Close()
me.baseGui = g
g.Cursor = true
g.Mouse = true
g.SetManagerFunc(layout)
if err := defaultKeybindings(g); err != nil {
panic(err)
}
if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
panic(err)
}
}
func layout(g *gocui.Gui) error {
maxX, maxY := g.Size()
mx, my := g.MousePosition()
if _, err := g.View("msg"); msgMouseDown && err == nil {
moveMsg(g)
}
// TODO: figure out what this might be useful for
// what is this do? I made it just 2 lines for now. Is this useful for something?
if v, err := g.SetView("global", 15, 5, maxX, 8, 10); err != nil {
if !errors.Is(err, gocui.ErrUnknownView) {
log("global failed", maxX, maxY)
return err
}
v.Frame = false
}
helplayout(g)
if widgetView, _ := g.View("msg"); widgetView == nil {
log(logInfo, "create output widget now", maxX, maxY, mx, my)
makeOutputWidget(g, "this is a create before a mouse click")
if (me.logStdout != nil) {
setOutput(me.logStdout)
}
} else {
log(logInfo, "output widget already exists", maxX, maxY, mx, my)
}
updateHighlightedView(g)
log(logInfo, "layout() END", maxX, maxY, mx, my)
return nil
}
func quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}
func updateHighlightedView(g *gocui.Gui) {
mx, my := g.MousePosition()
for _, view := range g.Views() {
view.Highlight = false
}
if v, err := g.ViewByPosition(mx, my); err == nil {
v.Highlight = true
}
}
func msgDown(g *gocui.Gui, v *gocui.View) error {
initialMouseX, initialMouseY = g.MousePosition()
if vx, vy, _, _, err := g.ViewPosition("msg"); err == nil {
xOffset = initialMouseX - vx
yOffset = initialMouseY - vy
msgMouseDown = true
}
return nil
}
func mouseUp(g *gocui.Gui, v *gocui.View) error {
if msgMouseDown {
msgMouseDown = false
if movingMsg {
movingMsg = false
return nil
} else {
g.DeleteView("msg")
}
} else if globalMouseDown {
globalMouseDown = false
g.DeleteView("globalDown")
}
return nil
}