go-gtk3开发之行编辑控件(12)

案例说明

添加行编辑控件，设置行编辑属性（密码不可见，不可编辑，灰色不可编辑），获取内容以及绑定事件，激活行控件后，获取内容。

demo.go

package main

import (
	"fmt"
	"github.com/gotk3/gotk3/glib"
	"github.com/gotk3/gotk3/gtk"
	"log"
	"os"
	"reflect"
)

func main() {
	const appId = "com.nayoso.example"
	app, _ := gtk.ApplicationNew(appId, glib.APPLICATION_FLAGS_NONE)
	_, err := app.Connect("activate", func() {
		createWindow(app)
	})
	if err != nil {
		log.Fatal(err)
	}

	app.Run(os.Args)
}

func createWindow(application *gtk.Application) {
	// 从文件中创建Builder
	builder, err := gtk.BuilderNewFromFile("10_行编辑/builder.ui")
	if err != nil {
		log.Fatal(err)
	}

	// 获取window窗口
	winObj, _ := builder.GetObject("window1")
	window := winObj.(*gtk.Window)
	application.AddWindow(window)

	// window 窗口设置
	window.SetSizeRequest(300, 240)                //设置窗口大小
	window.SetTitle("hello go")                    //设置标题
	window.SetResizable(false)                     //设置不可伸缩
	window.SetPosition(gtk.WIN_POS_CENTER)         //设置居中显示
	err = window.SetIconFromFile("images/app.ico") //设置icon
	if err != nil {
		log.Fatal(err)
	}

	//获取entry控件
	entryObj1, _ := builder.GetObject("entry1")
	entryObj2, _ := builder.GetObject("entry2")
	entryObj3, _ := builder.GetObject("entry3")
	entry1 := entryObj1.(*gtk.Entry)
	entry2 := entryObj2.(*gtk.Entry)
	entry3 := entryObj3.(*gtk.Entry)
	fmt.Println("hboxObj", reflect.TypeOf(entryObj3))

	entry1.SetText("123456")
	//设置内容
	entry1Text, _ := entry1.GetText()
	fmt.Println("entry1 text = ", entry1Text) //获取内容
	//entry1.ModifyFontSize(30)                 //修改字体大小 - 失败

	entry2.SetEditable(false)  //只读，不可编辑
	entry2.SetSensitive(false) //变灰色，不能编辑

	entry3.SetVisibility(false) //设置不可见字符，即密码模式

	//信号处理，当用户在文本输入控件内部按回车键时引发activate信号
	_, _ = entry1.Connect("activate", func() {
		entry1Text, _ := entry1.GetText()
		fmt.Println("entry text = ", entry1Text) //获取内容
	})

	// 显示所有界面
	window.ShowAll()
}

/*
信号标识	触发条件
“clicked”	按下按钮时触发
“pressed”	按下按钮时触发
“released”	释放按钮时触发
*/

builder.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <requires lib="gtk+" version="2.24"/>
  <!-- interface-naming-policy project-wide -->
  <object class="GtkImage" id="image1">
    <property name="visible">True</property>
    <property name="can_focus">False</property>
    <property name="stock">gtk-missing-image</property>
  </object>
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <child>
      <object class="GtkFixed" id="fixed1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <child>
          <object class="GtkEntry" id="entry1">
            <property name="width_request">100</property>
            <property name="height_request">80</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="invisible_char">●</property>
            <property name="primary_icon_activatable">False</property>
            <property name="secondary_icon_activatable">False</property>
            <property name="primary_icon_sensitive">True</property>
            <property name="secondary_icon_sensitive">True</property>
          </object>
          <packing>
            <property name="x">18</property>
          </packing>
        </child>
        <child>
          <object class="GtkEntry" id="entry2">
            <property name="width_request">100</property>
            <property name="height_request">80</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="invisible_char">●</property>
            <property name="primary_icon_activatable">False</property>
            <property name="secondary_icon_activatable">False</property>
            <property name="primary_icon_sensitive">True</property>
            <property name="secondary_icon_sensitive">True</property>
          </object>
          <packing>
            <property name="x">17</property>
            <property name="y">86</property>
          </packing>
        </child>
        <child>
          <object class="GtkEntry" id="entry3">
            <property name="width_request">100</property>
            <property name="height_request">80</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="invisible_char">●</property>
            <property name="primary_icon_activatable">False</property>
            <property name="secondary_icon_activatable">False</property>
            <property name="primary_icon_sensitive">True</property>
            <property name="secondary_icon_sensitive">True</property>
          </object>
          <packing>
            <property name="x">17</property>
            <property name="y">183</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
</interface>