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control_folder.go
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control_folder.go
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// Copyright 2016 The G3N 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 gui
import (
"fmt"
)
// ControlFolder represents a folder with controls.
type ControlFolder struct {
Folder // Embedded folder
tree Tree // control tree
styles *ControlFolderStyles // Pointer to styles
}
// ControlFolderStyles contains the styling for the valid GUI states of the components of a ControlFolder.
type ControlFolderStyles struct {
Folder *FolderStyles
Tree *TreeStyles
}
// ControlFolderGroup represents a group of controls in the control folder.
type ControlFolderGroup struct {
control *ControlFolder
node *TreeNode
}
// NewControlFolder creates and returns a pointer to a new control folder widget
// with the specified text and initial width
func NewControlFolder(text string, width float32) *ControlFolder {
f := new(ControlFolder)
f.Initialize(text, width)
return f
}
// Initialize initializes the control folder with the specified text and initial width
// It is normally used when the control folder is embedded in another object
func (f *ControlFolder) Initialize(text string, width float32) {
f.styles = &StyleDefault().ControlFolder
f.tree.Initialize(width, width)
f.tree.SetStyles(f.styles.Tree)
f.tree.SetAutoHeight(600)
f.tree.SetAutoWidth(400)
f.Folder.Initialize(text, width, &f.tree)
f.Folder.SetStyles(f.styles.Folder)
f.Folder.SetAlignRight(false)
}
// Clear clears the control folder's tree
func (f *ControlFolder) Clear() {
f.tree.Clear()
}
// RemoveAt removes the IPanel at the specified position from the control folder's tree
func (f *ControlFolder) RemoveAt(pos int) IPanel {
return f.tree.RemoveAt(pos)
}
// AddPanel adds an IPanel to the control folder's tree
func (f *ControlFolder) AddPanel(pan IPanel) {
f.tree.Add(pan)
}
// AddCheckBox adds a checkbox to the control folder's tree
func (f *ControlFolder) AddCheckBox(text string) *CheckRadio {
cb := NewCheckBox(text)
f.tree.Add(cb)
return cb
}
// AddSlider adds a slider to the control folder's tree
func (f *ControlFolder) AddSlider(text string, sf, v float32) *Slider {
cont, slider := f.newSlider(text, sf, v)
f.tree.Add(cont)
return slider
}
// AddGroup adds a group to the control folder
func (f *ControlFolder) AddGroup(text string) *ControlFolderGroup {
g := new(ControlFolderGroup)
g.control = f
g.node = f.tree.AddNode(text)
return g
}
// SetStyles set the folder styles overriding the default style
func (f *ControlFolder) SetStyles(fs *ControlFolderStyles) {
f.styles = fs
f.Folder.styles = fs.Folder
f.tree.styles = fs.Tree
f.tree.update()
f.Folder.update()
}
// AddCheckBox adds a checkbox to the control folder group
func (g *ControlFolderGroup) AddCheckBox(text string) *CheckRadio {
cb := NewCheckBox(text)
g.node.Add(cb)
return cb
}
// AddSlider adds a slider to the control folder group
func (g *ControlFolderGroup) AddSlider(text string, sf, v float32) *Slider {
cont, slider := g.control.newSlider(text, sf, v)
g.node.Add(cont)
return slider
}
// AddPanel adds a panel to the control folder group
func (g *ControlFolderGroup) AddPanel(pan IPanel) {
g.node.Add(pan)
}
func (f *ControlFolder) newSlider(text string, sf, value float32) (IPanel, *Slider) {
// Creates container panel for the label and slider
cont := NewPanel(200, 32)
hbox := NewHBoxLayout()
hbox.spacing = 4
cont.SetLayout(hbox)
// Adds label
l := NewImageLabel(text)
l.SetLayoutParams(&HBoxLayoutParams{AlignV: AlignCenter})
cont.Add(l)
// Adds slider
s := NewHSlider(100, l.Height())
s.SetScaleFactor(sf)
s.SetScaleFactor(sf)
s.SetValue(value)
s.SetText(fmt.Sprintf("%1.1f", value))
s.Subscribe(OnChange, func(evname string, ev interface{}) {
s.SetText(fmt.Sprintf("%1.1f", s.Value()))
})
s.SetLayoutParams(&HBoxLayoutParams{AlignV: AlignCenter, Expand: 1})
cont.Add(s)
return cont, s
}