multilabel

sysgo/UI/multilabel.go

@@ -0,0 +1,132 @@
+package UI
+
+import (
+	"github.com/veandco/go-sdl2/sdl"
+	"github.com/veandco/go-sdl2/ttf"
+	
+	"github.com/cuu/gogame/surface"
+	"github.com/cuu/gogame/rect"
+	"github.com/cuu/gogame/color"
+	"github.com/cuu/gogame/font"
+)
+
+//MultiLabel is also a LabelInterface
+type MultiLabel struct {
+	PosX       int
+	PosY       int
+	Width      int
+	Height     int
+	Text       string
+	FontObj    *ttf.Font
+	Color      *color.Color
+	CanvasHWND *sdl.Surface
+	//TextSurf *sdl.Surface
+	MaxWidth   int
+}
+
+func NewMultiLabel() *MultiLabel{
+	l := &MultiLabel{}
+	l.Color = &color.Color{83,83,83,255}
+	l.Width = 135
+	l.Height = 100
+
+	return l
+}
+
+func (self *MultiLabel) Init(text string, font_obj *ttf.Font,col *color.Color) {
+	if col != nil {
+		self.Color = col
+	}
+	
+	self.Text = text
+	self.FontObj = font_obj
+
+	if self.CanvasHWND != nil {
+		self.Draw()
+	}
+}
+
+func (self *MultiLabel) SetCanvasHWND( canvas *sdl.Surface) {
+	self.CanvasHWND = canvas
+}
+
+func (self *MultiLabel) Coord() (int,int) {
+	return self.PosX,self.PosY
+}
+
+func (self *MultiLabel) Size() (int,int) {
+	return self.Width,self.Height
+}
+
+func (self *MultiLabel) NewCoord(x,y int) {
+	self.PosX = x
+	self.PosY = y
+	
+}
+
+func (self *MultiLabel) SetColor(col *color.Color){
+	if col != nil {
+		self.Color = col
+	}
+}
+
+func (self *MultiLabel) GetText() string {
+	return self.Text
+}
+
+
+func (self *MultiLabel) SetText(text string) {
+	self.Text = text
+	
+}
+
+func (self *MultiLabel) Draw() {
+	font.SetBold(self.FontObj,false) // avoing same font tangling set_bold to others
+	self.blit_text(self.CanvasHWND, self.Text,self.PosX,self.PosY,self.FontObj)	
+}
+
+// difference to Label
+func (self *MultiLabel) blit_text(surf *sdl.Surface,text string, pos_x,pos_y int, fnt *ttf.Font) {
+	words := make([][]string, 0)
+	temp := strings.Split(text,"\n")
+	for _,v := range temp {
+		t := strings.Split(v," ")
+		words = append(words,t)
+	}
+
+	space,_   := font.Size(fnt," ")
+	max_width := self.Width
+	x,y       := pos_x,pos_y
+
+	row_total_width := 0
+	lines := 0
+
+	for i,line := range words[:4] {
+		for _,word := range line[:12] {
+			word_surface := font.Render(fnt,word,true,self.Color,nil)
+			word_width   := surface.GetWidth(word_surface)
+			word_height  := surface.GetHeight(word_surface)
+			row_total_width += word_width
+			if row_total_width+space >= max_width {
+				x = pos_x
+				y = y+word_height
+				row_total_width = word_width
+				if lines == 0 {
+					lines = lines + word_height
+				}else {
+					lines = lines + word_height
+				}	
+			}
+			rect_ := rect.Rect(x,y,self.Width,self.Height)
+			surface.Blit(surf,word_surface,&rect_,nil)
+			x += (word_width+space)	
+		}
+		x = pos_x
+		y += word_height
+		lines += word_height
+	}
+
+	self.Height = lines
+	
+}
+