441 lines
9.3 KiB
Go
441 lines
9.3 KiB
Go
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// Copyright 2010 The Walk Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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package walk
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import (
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"syscall"
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"unsafe"
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"github.com/lxn/win"
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)
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const groupBoxWindowClass = `\o/ Walk_GroupBox_Class \o/`
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func init() {
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AppendToWalkInit(func() {
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MustRegisterWindowClass(groupBoxWindowClass)
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})
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}
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type GroupBox struct {
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WidgetBase
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hWndGroupBox win.HWND
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checkBox *CheckBox
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composite *Composite
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headerHeight int // in native pixels
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titleChangedPublisher EventPublisher
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}
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func NewGroupBox(parent Container) (*GroupBox, error) {
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gb := new(GroupBox)
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if err := InitWidget(
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gb,
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parent,
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groupBoxWindowClass,
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win.WS_VISIBLE,
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win.WS_EX_CONTROLPARENT); err != nil {
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return nil, err
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}
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succeeded := false
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defer func() {
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if !succeeded {
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gb.Dispose()
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}
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}()
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gb.hWndGroupBox = win.CreateWindowEx(
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0, syscall.StringToUTF16Ptr("BUTTON"), nil,
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win.WS_CHILD|win.WS_VISIBLE|win.BS_GROUPBOX,
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0, 0, 80, 24, gb.hWnd, 0, 0, nil)
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if gb.hWndGroupBox == 0 {
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return nil, lastError("CreateWindowEx(BUTTON)")
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}
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win.SetWindowLong(gb.hWndGroupBox, win.GWL_ID, 1)
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gb.applyFont(gb.Font())
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gb.updateHeaderHeight()
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var err error
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gb.checkBox, err = NewCheckBox(gb)
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if err != nil {
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return nil, err
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}
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win.SetWindowLong(gb.checkBox.hWnd, win.GWL_ID, 2)
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gb.SetCheckable(false)
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gb.checkBox.SetChecked(true)
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gb.checkBox.CheckedChanged().Attach(func() {
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gb.applyEnabledFromCheckBox(gb.checkBox.Checked())
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})
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setWindowVisible(gb.checkBox.hWnd, false)
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gb.composite, err = NewComposite(gb)
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if err != nil {
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return nil, err
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}
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win.SetWindowLong(gb.composite.hWnd, win.GWL_ID, 3)
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gb.composite.name = "composite"
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win.SetWindowPos(gb.checkBox.hWnd, win.HWND_TOP, 0, 0, 0, 0, win.SWP_NOMOVE|win.SWP_NOSIZE)
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gb.SetBackground(NullBrush())
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gb.MustRegisterProperty("Title", NewProperty(
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func() interface{} {
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return gb.Title()
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},
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func(v interface{}) error {
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return gb.SetTitle(assertStringOr(v, ""))
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},
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gb.titleChangedPublisher.Event()))
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gb.MustRegisterProperty("Checked", NewBoolProperty(
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func() bool {
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return gb.Checked()
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},
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func(v bool) error {
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gb.SetChecked(v)
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return nil
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},
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gb.CheckedChanged()))
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succeeded = true
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return gb, nil
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}
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func (gb *GroupBox) AsContainerBase() *ContainerBase {
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if gb.composite == nil {
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return nil
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}
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return gb.composite.AsContainerBase()
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}
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func (gb *GroupBox) ClientBoundsPixels() Rectangle {
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cb := windowClientBounds(gb.hWndGroupBox)
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if gb.Layout() == nil {
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return cb
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}
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if gb.Checkable() {
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s := createLayoutItemForWidget(gb.checkBox).(MinSizer).MinSize()
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cb.Y += s.Height
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cb.Height -= s.Height
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}
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padding := gb.IntFrom96DPI(1)
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return Rectangle{cb.X + padding, cb.Y + gb.headerHeight, cb.Width - 2*padding, cb.Height - gb.headerHeight - 2*padding}
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}
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func (gb *GroupBox) updateHeaderHeight() {
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gb.headerHeight = gb.calculateTextSizeImpl("gM").Height
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}
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func (gb *GroupBox) Persistent() bool {
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return gb.composite.Persistent()
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}
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func (gb *GroupBox) SetPersistent(value bool) {
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gb.composite.SetPersistent(value)
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}
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func (gb *GroupBox) SaveState() error {
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return gb.composite.SaveState()
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}
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func (gb *GroupBox) RestoreState() error {
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return gb.composite.RestoreState()
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}
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func (gb *GroupBox) applyEnabled(enabled bool) {
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gb.WidgetBase.applyEnabled(enabled)
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if gb.hWndGroupBox != 0 {
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setWindowEnabled(gb.hWndGroupBox, enabled)
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}
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if gb.checkBox != nil {
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gb.checkBox.applyEnabled(enabled)
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}
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if gb.composite != nil {
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gb.composite.applyEnabled(enabled)
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}
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}
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func (gb *GroupBox) applyEnabledFromCheckBox(enabled bool) {
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if gb.hWndGroupBox != 0 {
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setWindowEnabled(gb.hWndGroupBox, enabled)
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}
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if gb.composite != nil {
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gb.composite.applyEnabled(enabled)
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}
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}
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func (gb *GroupBox) applyFont(font *Font) {
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gb.WidgetBase.applyFont(font)
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if gb.checkBox != nil {
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gb.checkBox.applyFont(font)
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}
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if gb.hWndGroupBox != 0 {
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SetWindowFont(gb.hWndGroupBox, font)
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}
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if gb.composite != nil {
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gb.composite.applyFont(font)
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}
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gb.updateHeaderHeight()
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}
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func (gb *GroupBox) SetSuspended(suspend bool) {
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gb.composite.SetSuspended(suspend)
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gb.WidgetBase.SetSuspended(suspend)
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gb.Invalidate()
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}
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func (gb *GroupBox) DataBinder() *DataBinder {
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return gb.composite.dataBinder
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}
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func (gb *GroupBox) SetDataBinder(dataBinder *DataBinder) {
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gb.composite.SetDataBinder(dataBinder)
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}
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func (gb *GroupBox) Title() string {
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if gb.Checkable() {
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return gb.checkBox.Text()
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}
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return windowText(gb.hWndGroupBox)
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}
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func (gb *GroupBox) SetTitle(title string) error {
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if gb.Checkable() {
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if err := setWindowText(gb.hWndGroupBox, ""); err != nil {
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return err
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}
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return gb.checkBox.SetText(title)
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}
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return setWindowText(gb.hWndGroupBox, title)
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}
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func (gb *GroupBox) Checkable() bool {
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return gb.checkBox.visible
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}
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func (gb *GroupBox) SetCheckable(checkable bool) {
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title := gb.Title()
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gb.checkBox.SetVisible(checkable)
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gb.SetTitle(title)
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gb.RequestLayout()
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}
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func (gb *GroupBox) Checked() bool {
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return gb.checkBox.Checked()
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}
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func (gb *GroupBox) SetChecked(checked bool) {
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gb.checkBox.SetChecked(checked)
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}
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func (gb *GroupBox) CheckedChanged() *Event {
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return gb.checkBox.CheckedChanged()
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}
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func (gb *GroupBox) ApplyDPI(dpi int) {
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gb.WidgetBase.ApplyDPI(dpi)
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if gb.checkBox != nil {
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gb.checkBox.ApplyDPI(dpi)
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}
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if gb.composite != nil {
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gb.composite.ApplyDPI(dpi)
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}
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}
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func (gb *GroupBox) Children() *WidgetList {
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if gb.composite == nil {
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// Without this we would get into trouble in NewComposite.
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return nil
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}
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return gb.composite.Children()
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}
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func (gb *GroupBox) Layout() Layout {
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if gb.composite == nil {
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// Without this we would get into trouble through the call to
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// SetCheckable in NewGroupBox.
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return nil
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}
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return gb.composite.Layout()
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}
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func (gb *GroupBox) SetLayout(value Layout) error {
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return gb.composite.SetLayout(value)
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}
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func (gb *GroupBox) MouseDown() *MouseEvent {
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return gb.composite.MouseDown()
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}
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func (gb *GroupBox) MouseMove() *MouseEvent {
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return gb.composite.MouseMove()
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}
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func (gb *GroupBox) MouseUp() *MouseEvent {
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return gb.composite.MouseUp()
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}
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func (gb *GroupBox) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr {
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if gb.composite != nil {
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switch msg {
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case win.WM_CTLCOLORSTATIC:
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if hBrush := gb.handleWMCTLCOLOR(wParam, lParam); hBrush != 0 {
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return hBrush
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}
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case win.WM_COMMAND:
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hwndSrc := win.GetDlgItem(gb.hWnd, int32(win.LOWORD(uint32(wParam))))
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if window := windowFromHandle(hwndSrc); window != nil {
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window.WndProc(hwnd, msg, wParam, lParam)
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}
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case win.WM_NOTIFY:
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gb.composite.WndProc(hwnd, msg, wParam, lParam)
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case win.WM_SETTEXT:
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gb.titleChangedPublisher.Publish()
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case win.WM_PAINT:
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win.UpdateWindow(gb.checkBox.hWnd)
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case win.WM_WINDOWPOSCHANGED:
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wp := (*win.WINDOWPOS)(unsafe.Pointer(lParam))
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if wp.Flags&win.SWP_NOSIZE != 0 {
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break
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}
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offset := gb.headerHeight / 4
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wbcb := gb.WidgetBase.ClientBoundsPixels()
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if !win.MoveWindow(
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gb.hWndGroupBox,
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int32(wbcb.X),
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int32(wbcb.Y-offset),
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int32(wbcb.Width),
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int32(wbcb.Height),
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true) {
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lastError("MoveWindow")
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break
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}
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if gb.Checkable() {
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s := createLayoutItemForWidget(gb.checkBox).(MinSizer).MinSize()
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var x int
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if l := gb.Layout(); l != nil {
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x = gb.IntFrom96DPI(l.Margins().HNear)
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} else {
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x = gb.headerHeight * 2 / 3
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}
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gb.checkBox.SetBoundsPixels(Rectangle{x, gb.headerHeight, s.Width, s.Height})
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}
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gbcb := gb.ClientBoundsPixels()
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gbcb.Y -= offset
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gb.composite.SetBoundsPixels(gbcb)
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}
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}
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return gb.WidgetBase.WndProc(hwnd, msg, wParam, lParam)
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}
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func (gb *GroupBox) CreateLayoutItem(ctx *LayoutContext) LayoutItem {
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compositePos := Point{gb.IntFrom96DPI(1), gb.headerHeight}
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if gb.Checkable() {
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idealSize := gb.checkBox.idealSize()
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compositePos.Y += idealSize.Height
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}
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li := &groupBoxLayoutItem{
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compositePos: compositePos,
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title: gb.Title(),
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}
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gbli := CreateLayoutItemsForContainerWithContext(gb.composite, ctx)
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gbli.AsLayoutItemBase().parent = li
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li.children = append(li.children, gbli)
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return li
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}
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|
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type groupBoxLayoutItem struct {
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ContainerLayoutItemBase
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compositePos Point // in native pixels
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title string
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}
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func (li *groupBoxLayoutItem) LayoutFlags() LayoutFlags {
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return li.children[0].LayoutFlags()
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}
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func (li *groupBoxLayoutItem) MinSize() Size {
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min := li.children[0].(MinSizer).MinSize()
|
||
|
|
min.Width += li.compositePos.X * 2
|
||
|
|
min.Height += li.compositePos.Y + IntFrom96DPI(5, li.ctx.dpi)
|
||
|
|
|
||
|
|
return min
|
||
|
|
}
|
||
|
|
|
||
|
|
func (li *groupBoxLayoutItem) MinSizeForSize(size Size) Size {
|
||
|
|
return li.MinSize()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (li *groupBoxLayoutItem) HasHeightForWidth() bool {
|
||
|
|
return li.children[0].(HeightForWidther).HasHeightForWidth()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (li *groupBoxLayoutItem) HeightForWidth(width int) int {
|
||
|
|
return li.children[0].(HeightForWidther).HeightForWidth(width-li.compositePos.X*2) + li.compositePos.Y + IntFrom96DPI(5, li.ctx.dpi)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (li *groupBoxLayoutItem) IdealSize() Size {
|
||
|
|
size := li.children[0].(IdealSizer).IdealSize()
|
||
|
|
size.Height += li.compositePos.Y
|
||
|
|
return size
|
||
|
|
}
|
||
|
|
|
||
|
|
func (li *groupBoxLayoutItem) PerformLayout() []LayoutResultItem {
|
||
|
|
return []LayoutResultItem{
|
||
|
|
{
|
||
|
|
Item: li.children[0],
|
||
|
|
Bounds: Rectangle{X: li.compositePos.X, Y: li.compositePos.Y, Width: li.geometry.Size.Width - li.compositePos.X*2, Height: li.geometry.Size.Height - li.compositePos.Y - IntFrom96DPI(5, li.ctx.dpi)},
|
||
|
|
},
|
||
|
|
}
|
||
|
|
}
|