76 lines
2.7 KiB
Go
76 lines
2.7 KiB
Go
package raygui
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import rl "github.com/gen2brain/raylib-go/raylib"
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// Slider - Slider element, returns selected value
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func Slider(bounds rl.Rectangle, value, minValue, maxValue float32) float32 {
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b := bounds.ToInt32()
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sliderPos := float32(0)
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state := Normal
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buttonTravelDistance := float32(0)
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mousePoint := rl.GetMousePosition()
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// Update control
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if value < minValue {
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value = minValue
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} else if value >= maxValue {
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value = maxValue
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}
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sliderPos = (value - minValue) / (maxValue - minValue)
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sliderButton := rl.RectangleInt32{}
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sliderButton.Width = (b.Width-(2*int32(style[SliderButtonBorderWidth])))/10 - 8
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sliderButton.Height = b.Height - (2 * int32(style[SliderBorderWidth]+2*style[SliderButtonBorderWidth]))
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sliderButtonMinPos := b.X + int32(style[SliderBorderWidth]) + int32(style[SliderButtonBorderWidth])
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sliderButtonMaxPos := b.X + b.Width - (int32(style[SliderBorderWidth]) + int32(style[SliderButtonBorderWidth]) + sliderButton.Width)
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buttonTravelDistance = float32(sliderButtonMaxPos - sliderButtonMinPos)
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sliderButton.X = b.X + int32(style[SliderBorderWidth]) + int32(style[SliderButtonBorderWidth]) + int32(sliderPos*buttonTravelDistance)
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sliderButton.Y = b.Y + int32(style[SliderBorderWidth]) + int32(style[SliderButtonBorderWidth])
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if rl.CheckCollisionPointRec(mousePoint, bounds) {
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state = Focused
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if rl.IsMouseButtonDown(rl.MouseLeftButton) {
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state = Pressed
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}
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if state == Pressed && rl.IsMouseButtonDown(rl.MouseLeftButton) {
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sliderButton.X = int32(mousePoint.X) - sliderButton.Width/2
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if sliderButton.X <= sliderButtonMinPos {
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sliderButton.X = sliderButtonMinPos
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} else if sliderButton.X >= sliderButtonMaxPos {
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sliderButton.X = sliderButtonMaxPos
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}
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sliderPos = float32(sliderButton.X-sliderButtonMinPos) / buttonTravelDistance
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}
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} else {
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state = Normal
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}
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// Draw control
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rl.DrawRectangle(b.X, b.Y, b.Width, b.Height, rl.GetColor(uint(style[SliderBorderColor])))
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rl.DrawRectangle(b.X+int32(style[SliderBorderWidth]), b.Y+int32(style[SliderBorderWidth]), b.Width-(2*int32(style[SliderBorderWidth])), b.Height-(2*int32(style[SliderBorderWidth])), rl.GetColor(uint(style[SliderInsideColor])))
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switch state {
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case Normal:
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rl.DrawRectangle(sliderButton.X, sliderButton.Y, sliderButton.Width, sliderButton.Height, rl.GetColor(uint(style[SliderDefaultColor])))
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break
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case Focused:
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rl.DrawRectangle(sliderButton.X, sliderButton.Y, sliderButton.Width, sliderButton.Height, rl.GetColor(uint(style[SliderHoverColor])))
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break
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case Pressed:
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rl.DrawRectangle(sliderButton.X, sliderButton.Y, sliderButton.Width, sliderButton.Height, rl.GetColor(uint(style[SliderActiveColor])))
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break
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default:
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break
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}
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return minValue + (maxValue-minValue)*sliderPos
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}
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