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button.go
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button.go
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package rlyeh
import (
rl "github.com/gen2brain/raylib-go/raylib"
)
type Button struct {
id int32
Text string
Parent Widget
Bounds rl.Rectangle
Align Align
Fill Fill
State State
Image rl.Texture2D
OnClick func()
}
func NewButton(align Align, fill Fill, text string, onClick func()) *Button {
self := &Button{}
self.Align = align
self.Fill = fill
self.Text = text
self.OnClick = onClick
return self
}
func (self *Button) GetId() int32 {
return self.id
}
func (self *Button) SetId(id int32) {
self.id = id
}
func (self *Button) GetParent() Widget {
return self.Parent
}
func (self *Button) SetParent(parent Widget) {
self.Parent = parent
}
func (self *Button) GetBounds() rl.Rectangle {
return self.Bounds
}
func (self *Button) SetBounds(bounds rl.Rectangle) {
self.Bounds = bounds
}
func (self *Button) GetAlign() Align {
return self.Align
}
func (self *Button) GetFill() Fill {
return self.Fill
}
func (self *Button) GetDataSize() Size {
var size Size
size.Width = float32(rl.MeasureText(self.Text, int32(style.GlobalTextFontsize)))
size.Height = float32(style.GlobalTextFontsize)
if self.Image.ID > 0 {
size.Width += float32(self.Image.Width)
if size.Height < float32(self.Image.Height) {
size.Height = float32(self.Image.Height)
}
}
size.Width += float32(style.ButtonTextPadding)
size.Height += float32(style.ButtonTextPadding) / 2
return size
}
func (self *Button) Update(dt float32) {
state := GetState(self.Bounds)
if Released == state && Pressed == self.State && nil != self.OnClick {
self.OnClick()
}
self.State = state
}
func (self *Button) Draw() {
b := self.Bounds.ToInt32()
state := self.State
text := self.Text
contentWidth := rl.MeasureText(text, int32(style.GlobalTextFontsize))
if self.Image.ID > 0 {
contentWidth += self.Image.Width
}
switch state {
case Released:
rl.DrawRectangle(b.X, b.Y, b.Width, b.Height, style.ButtonDefaultBorderColor)
rl.DrawRectangle(b.X+int32(style.ButtonBorderWidth), b.Y+int32(style.ButtonBorderWidth), b.Width-(2*int32(style.ButtonBorderWidth)), b.Height-(2*int32(style.ButtonBorderWidth)), style.ButtonDefaultInsideColor)
if self.Image.ID > 0 {
rl.DrawTexture(self.Image, b.X+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(self.Image.Height/2)), rl.RayWhite)
}
rl.DrawText(text, b.X+self.Image.Width+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(int32(style.GlobalTextFontsize)/2)), int32(style.GlobalTextFontsize), style.ButtonDefaultTextColor)
case Normal:
rl.DrawRectangle(b.X, b.Y, b.Width, b.Height, style.ButtonDefaultBorderColor)
rl.DrawRectangle(b.X+int32(style.ButtonBorderWidth), b.Y+int32(style.ButtonBorderWidth), b.Width-(2*int32(style.ButtonBorderWidth)), b.Height-(2*int32(style.ButtonBorderWidth)), style.ButtonDefaultInsideColor)
if self.Image.ID > 0 {
rl.DrawTexture(self.Image, b.X+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(self.Image.Height/2)), rl.RayWhite)
}
rl.DrawText(text, b.X+self.Image.Width+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(int32(style.GlobalTextFontsize)/2)), int32(style.GlobalTextFontsize), style.ButtonDefaultTextColor)
break
case Focused:
rl.DrawRectangle(b.X, b.Y, b.Width, b.Height, style.ButtonHoverBorderColor)
rl.DrawRectangle(b.X+int32(style.ButtonBorderWidth), b.Y+int32(style.ButtonBorderWidth), b.Width-(2*int32(style.ButtonBorderWidth)), b.Height-(2*int32(style.ButtonBorderWidth)), style.ButtonHoverInsideColor)
if self.Image.ID > 0 {
rl.DrawTexture(self.Image, b.X+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(self.Image.Height/2)), rl.RayWhite)
}
rl.DrawText(text, b.X+self.Image.Width+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(int32(style.GlobalTextFontsize)/2)), int32(style.GlobalTextFontsize), style.ButtonHoverTextColor)
break
case Pressed:
rl.DrawRectangle(b.X, b.Y, b.Width, b.Height, style.ButtonPressedBorderColor)
rl.DrawRectangle(b.X+int32(style.ButtonBorderWidth), b.Y+int32(style.ButtonBorderWidth), b.Width-(2*int32(style.ButtonBorderWidth)), b.Height-(2*int32(style.ButtonBorderWidth)), style.ButtonPressedInsideColor)
if self.Image.ID > 0 {
rl.DrawTexture(self.Image, b.X+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(self.Image.Height/2)), rl.RayWhite)
}
rl.DrawText(text, b.X+self.Image.Width+(b.Width/2-contentWidth/2), b.Y+((b.Height/2)-(int32(style.GlobalTextFontsize)/2)), int32(style.GlobalTextFontsize), style.ButtonPressedTextColor)
break
default:
break
}
}