LoginScreen.qml
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import QtQuick
import QtQuick.Controls.Basic
import QtQuick.Layouts
import "components"
import "." as App
Rectangle {
id: root
color: App.Theme.bgCanvas
focus: true
// 提交期间禁止重复点击 / 回车
property bool submitting: false
function doLogin() {
if (submitting) return
if (usernameField.text.length === 0 || passwordField.text.length === 0) {
errorLabel.text = "用户名和密码不能为空"
return
}
errorLabel.text = ""
submitting = true
// AuthBridge.login 是同步（pymysql 5s timeout），主线程会卡一下；
// task #18 时若 db 慢需求改异步再说
var ok = auth.login(usernameField.text, passwordField.text)
submitting = false
// 失败时 auth 会发 loginFailed 信号，由下面 Connections 接住
// 成功时 auth.loggedInChanged → AppState 转发 → Main.qml StackLayout 切换
}
Keys.onReturnPressed: doLogin()
Keys.onEnterPressed: doLogin()
Connections {
target: auth
function onLoginFailed(message) {
errorLabel.text = message
}
}
ColumnLayout {
anchors.centerIn: parent
width: 360
spacing: 0
Label {
text: "登录"
font.family: App.Theme.fontFamily
font.pointSize: App.Theme.fontXxl
font.weight: Font.Bold
color: App.Theme.textPrimary
Layout.alignment: Qt.AlignHCenter
Layout.bottomMargin: 4
}
Label {
text: "珠宝壹佰图像生成器"
font.family: App.Theme.fontFamily
font.pointSize: App.Theme.fontSm
color: App.Theme.textSecondary
Layout.alignment: Qt.AlignHCenter
Layout.bottomMargin: App.Theme.space5
}
CaptionLabel {
text: "用户名"
Layout.bottomMargin: App.Theme.space2
}
ThemedTextField {
id: usernameField
text: ""
placeholderText: "请输入用户名"
enabled: !root.submitting
Layout.fillWidth: true
Layout.bottomMargin: App.Theme.space4
}
CaptionLabel {
text: "密码"
Layout.bottomMargin: App.Theme.space2
}
ThemedTextField {
id: passwordField
echoMode: TextInput.Password
placeholderText: "••••••••"
enabled: !root.submitting
Layout.fillWidth: true
Layout.bottomMargin: App.Theme.space2
}
RowLayout {
spacing: App.Theme.space4
Layout.fillWidth: true
Layout.bottomMargin: App.Theme.space5
CheckBox {
id: rememberUser
text: "记住用户名"
checked: true
enabled: !root.submitting
font.family: App.Theme.fontFamily
font.pointSize: App.Theme.fontSm
contentItem: Text {
text: parent.text
font: parent.font
color: App.Theme.textPrimary
leftPadding: parent.indicator.width + 6
verticalAlignment: Text.AlignVCenter
}
indicator: Rectangle {
implicitWidth: 18
implicitHeight: 18
radius: 4
border.width: 1
border.color: parent.checked ? App.Theme.accent : App.Theme.borderStrong
color: parent.checked ? App.Theme.accent : App.Theme.bgSurface
Text {
anchors.centerIn: parent
text: "✓"
color: "white"
font.pixelSize: 12
font.weight: Font.Bold
visible: parent.parent.checked
}
}
}
CheckBox {
id: rememberPassword
text: "记住密码"
checked: true
enabled: !root.submitting
font.family: App.Theme.fontFamily
font.pointSize: App.Theme.fontSm
contentItem: Text {
text: parent.text
font: parent.font
color: App.Theme.textPrimary
leftPadding: parent.indicator.width + 6
verticalAlignment: Text.AlignVCenter
}
indicator: Rectangle {
implicitWidth: 18
implicitHeight: 18
radius: 4
border.width: 1
border.color: parent.checked ? App.Theme.accent : App.Theme.borderStrong
color: parent.checked ? App.Theme.accent : App.Theme.bgSurface
Text {
anchors.centerIn: parent
text: "✓"
color: "white"
font.pixelSize: 12
font.weight: Font.Bold
visible: parent.parent.checked
}
}
}
Item { Layout.fillWidth: true }
}
PrimaryButton {
text: root.submitting ? "登录中…" : "登录"
enabled: !root.submitting
Layout.fillWidth: true
onClicked: doLogin()
}
Label {
id: errorLabel
text: ""
font.family: App.Theme.fontFamily
font.pointSize: App.Theme.fontXs
color: App.Theme.danger
wrapMode: Text.Wrap
horizontalAlignment: Text.AlignHCenter
Layout.fillWidth: true
Layout.topMargin: App.Theme.space3
}
}
}