try to copy whole design from python gameshell launcher

sysgo/UI/icon_item.go

@@ -0,0 +1,125 @@
+package UI
+
+import (
+	
+	"github.com/veandco/go-sdl2/sdl"
+	"github.com/veandco/go-sdl2/ttf"
+
+	"github.com/cuu/gogame/transform"
+	"github.com/cuu/gogame/utils"
+)
+
+type IconItem struct {
+	PosX int
+	PosY int
+	Width int
+	Height int
+	ImageName string
+	ImgSurf *sdl.Surface
+	Parent  PageInterface
+	Index   int
+	MyType int
+	CmdPath  interface{}
+	LinkPage PageInterface
+	Label  LabelInterface
+	Align  int
+	AnimationTime int
+}
+
+
+func NewIconItem() *IconItem {
+	i := &IconItem{}
+	i.MyType = ICON_TYPES["EXE"]
+
+	i.Align = ALIGN["VCenter"]
+	
+	l := NewLabel()
+	
+	i.Label = l
+	
+	return i
+}
+
+
+func (self *IconItem) Init(x,y,w,h,at) {
+	self.PosX = x
+	self.PosY = y
+	self.Width = w
+	self.Height = h
+	self.AnimationTime = at
+}
+
+func (self *IconItem) SetLabelColor(col *color.Color) {
+	self.Label.SetColor(col)
+}
+
+func (self *IconItem) NewCoord(x,y int) {
+	self.PosX = x
+	self.PosY = y
+}
+
+func (self *IconItem) AddLabel(text string, fontobj *ttf.Font) {
+	if self.Label == nil {
+		l:= NewLabel()
+		self.Label = l
+	}else {
+		self.Label.Init(text,fontobj)
+	}	
+}
+
+func (self *IconItem) AdjustLinkPage() {
+	if self.MyType == ICON_TYPES["DIR"] && self.LinkPage != nil {
+		self.LinkPage.SetIndex(0)
+		self.LinkPage.SetAlign(ALIGN["SLeft"])
+		self.LinkPage.SetIconNumbers( len(self.LinkPage.GetIcons()) )
+		self.LinkPage.SetScreen(self.Parent.GetScreen())
+		self.LinkPage.SetCanvasHWND( (self.Parent.GetScreen()).CanvasHWND )
+		self.LinkPage.SetFootMsg([5]string{ "Nav.","","","Back","Enter" } )
+		if self.LinkPage.GetAlign() == ALIGN["HLeft"] {
+			self.LinkPage.AdjustHLeftAlign()
+		}else if self.LinkPage.GetAlign() == ALIGN["SLeft"] {
+			self.LinkPage.AdjustSAutoLeftAlign()
+			if self.LinkPage.GetIconNumbers() > 1 {
+				self.LinkPage.SetPsIndex(1)
+				self.LinkPage.SetIconIndex ( 1 ) 
+			}
+		}
+	}
+}
+
+func (self *IconItem) CreateImageSurf() {
+	if self.ImgSurf == nil && self.ImageName != "" {
+		self.ImgSurf = image.Load(self.ImageName)
+		if self.ImgSurf.W  > IconWidth  || self.ImgSurf.H > IconHeight {
+			self.ImgSurf = transform.Scale(self.ImgSurf,IconWidth,IconHeight)
+		}
+	}
+}
+
+func (self *IconItem) ChangeImgSurfColor(col *color.Color) {
+	utils.ColorSurface(self.ImgSurf,col)
+}
+
+func (self *IconItem) Draw() {
+	
+	parent_x,parent_y := self.Parent.Coord()
+	
+	if self.Label != nil {
+		lab_x,lab_y := self.Label.Coord()
+		lab_w,lab_h:= self.Label.Size()
+		
+		if self.Align == ALIGN["VCenter"] {
+			self.Label.NewCoord( self.PosX - lab_w/2 + parent_x, self.PosY + lab_h/2+6+parent_y)
+		}else if self.Align == ALIGN["HLeft"] {
+			self.Label.NewCoord( self.PosX + self.Width/2+3+parent_x, self.PosY - lab_h/2 + parent_y)
+		}
+
+		self.Label.Draw()
+	}
+
+	if self.ImgSurf != nil {
+		surface.Blit(self.Parent.GetCanvasHWND(), self.ImgSurf,draw.MidRect(self.PosX + parent_x, self.PosY + parent_y,
+			self.Width,self.Height, Width, Height),nil)
+	}
+}
+