mirror of
https://github.com/clockworkpi/LauncherGoDev.git
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92 lines
1.8 KiB
Go
92 lines
1.8 KiB
Go
package UI
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import (
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"fmt"
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"github.com/veandco/go-sdl2/sdl"
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// "github.com/veandco/go-sdl2/ttf"
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// "github.com/cuu/gogame/surface"
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// "github.com/cuu/gogame/rect"
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"github.com/cuu/gogame/color"
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// "github.com/cuu/gogame/font"
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"github.com/cuu/gogame/draw"
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)
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type ListScroller struct {
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Widget
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MinHeight int
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Parent PageInterface
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Color *color.Color
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StartX int
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StartY int
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EndX int
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EndY int
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Value int
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CanvasHWND *sdl.Surface
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}
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func NewListScroller() *ListScroller {
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l := &ListScroller{}
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l.Width = 7
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l.Color = &color.Color{131, 199, 219, 255} // SkinManager().GiveColor('Front')
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return l
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}
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func (self *ListScroller) Init() {
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//just set the CanvasHWND
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cav_ := self.Parent.GetCanvasHWND()
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self.SetCanvasHWND(cav_)
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}
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func (self *ListScroller) SetCanvasHWND(canvas *sdl.Surface) {
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self.CanvasHWND = canvas
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}
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func (self *ListScroller) AnimateDraw(x2, y2 int) {
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}
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func (self *ListScroller) UpdateSize(bigheight, dirtyheight int) {
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_, h_ := self.Parent.Size()
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bodyheight := float64(h_) / float64(bigheight)
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if bodyheight > 1.0 {
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bodyheight = 1.0
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}
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margin := 4
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self.Height = int(bodyheight*float64(h_) - float64(margin))
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if self.Height < self.MinHeight {
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self.Height = self.MinHeight
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}
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self.StartX = self.Width / 2
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self.StartY = margin/2 + self.Height/2
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self.EndX = self.Width / 2
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self.EndY = h_ - margin/2 - self.Height/2
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process := float64(dirtyheight) / float64(bigheight)
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value := process * float64(self.EndY-self.StartY)
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self.Value = int(value)
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}
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func (self *ListScroller) Draw() {
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w_, h_ := self.Parent.Size()
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start_rect := draw.MidRect(self.PosX+self.StartX, self.StartY+self.Value, self.Width, self.Height, w_, h_)
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if self.Width < 1 {
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fmt.Println("ListScroller width error")
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} else {
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draw.AARoundRect(self.CanvasHWND, start_rect, self.Color, 3, 0, self.Color)
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}
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}
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