mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-10-31 16:27:18 -04:00
147 lines
3.2 KiB
Go
147 lines
3.2 KiB
Go
package d2ui
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import (
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"github.com/OpenDiablo2/D2Shared/d2common/d2enum"
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"github.com/OpenDiablo2/D2Shared/d2common/d2interface"
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"github.com/OpenDiablo2/D2Shared/d2common/d2resource"
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"github.com/OpenDiablo2/D2Shared/d2data/d2datadict"
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"github.com/OpenDiablo2/D2Shared/d2data/d2dc6"
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"github.com/OpenDiablo2/OpenDiablo2/d2render"
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"github.com/hajimehoshi/ebiten"
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)
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type Scrollbar struct {
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x, y, height int
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visible bool
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enabled bool
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currentOffset int
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maxOffset int
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lastDirChange int
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onActivate func()
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scrollbarSprite d2render.Sprite
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}
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func CreateScrollbar(fileProvider d2interface.FileProvider, x, y, height int) Scrollbar {
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dc6, _ := d2dc6.LoadDC6(fileProvider.LoadFile(d2resource.Scrollbar), d2datadict.Palettes[d2enum.Sky])
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result := Scrollbar{
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visible: true,
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enabled: true,
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x: x,
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y: y,
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height: height,
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scrollbarSprite: d2render.CreateSpriteFromDC6(dc6),
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}
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return result
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}
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func (v Scrollbar) GetEnabled() bool {
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return v.enabled
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}
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func (v *Scrollbar) SetEnabled(enabled bool) {
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v.enabled = enabled
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}
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func (v *Scrollbar) SetPressed(pressed bool) {}
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func (v *Scrollbar) GetPressed() bool { return false }
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func (v *Scrollbar) OnActivated(callback func()) {
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v.onActivate = callback
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}
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func (v Scrollbar) getBarPosition() int {
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return int((float32(v.currentOffset) / float32(v.maxOffset)) * float32(v.height-30))
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}
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func (v *Scrollbar) Activate() {
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_, my := ebiten.CursorPosition()
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barPosition := v.getBarPosition()
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if my <= v.y+barPosition+15 {
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if v.currentOffset > 0 {
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v.currentOffset--
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v.lastDirChange = -1
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}
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} else {
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if v.currentOffset < v.maxOffset {
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v.currentOffset++
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v.lastDirChange = 1
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}
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}
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if v.onActivate != nil {
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v.onActivate()
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}
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}
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func (v Scrollbar) GetLastDirChange() int {
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return v.lastDirChange
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}
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func (v *Scrollbar) Draw(target *ebiten.Image) {
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if !v.visible || v.maxOffset == 0 {
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return
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}
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offset := 0
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if !v.enabled {
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offset = 2
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}
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v.scrollbarSprite.MoveTo(v.x, v.y)
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v.scrollbarSprite.DrawSegments(target, 1, 1, 0+offset)
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v.scrollbarSprite.MoveTo(v.x, v.y+v.height-10)
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v.scrollbarSprite.DrawSegments(target, 1, 1, 1+offset)
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if v.maxOffset == 0 || v.currentOffset < 0 || v.currentOffset > v.maxOffset {
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return
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}
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v.scrollbarSprite.MoveTo(v.x, v.y+10+v.getBarPosition())
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offset = 0
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if !v.enabled {
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offset = 1
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}
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v.scrollbarSprite.DrawSegments(target, 1, 1, 4+offset)
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}
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func (v *Scrollbar) GetSize() (width, height uint32) {
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return 10, uint32(v.height)
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}
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func (v *Scrollbar) MoveTo(x, y int) {
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v.x = x
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v.y = y
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}
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func (v *Scrollbar) GetLocation() (x, y int) {
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return v.x, v.y
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}
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func (v *Scrollbar) GetVisible() bool {
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return v.visible
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}
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func (v *Scrollbar) SetVisible(visible bool) {
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v.visible = visible
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}
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func (v *Scrollbar) SetMaxOffset(maxOffset int) {
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v.maxOffset = maxOffset
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if v.maxOffset < 0 {
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v.maxOffset = 0
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}
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if v.currentOffset > v.maxOffset {
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v.currentOffset = v.maxOffset
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}
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if v.maxOffset == 0 {
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v.currentOffset = 0
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}
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}
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func (v *Scrollbar) SetCurrentOffset(currentOffset int) {
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v.currentOffset = currentOffset
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}
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func (v Scrollbar) GetMaxOffset() int {
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return v.maxOffset
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}
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func (v Scrollbar) GetCurrentOffset() int {
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return v.currentOffset
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}
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