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mirror of https://github.com/OpenDiablo2/OpenDiablo2 synced 2024-06-12 18:50:42 +00:00
OpenDiablo2/d2core/d2gui/layout.go
Alex Yatskov 810b168ebf
Work in progress on GUI (#304)
* Work in progress on GUI refactor

* Remove WIP file

* Remove WIP style
2020-02-17 22:11:52 -05:00

164 lines
3.4 KiB
Go

package d2gui
import (
"image/color"
"github.com/OpenDiablo2/OpenDiablo2/d2core/d2input"
"github.com/OpenDiablo2/OpenDiablo2/d2core/d2render"
)
type layoutEntry struct {
widget widget
mouseOver bool
mouseDown [3]bool
}
type Layout struct {
widgetBase
entries []*layoutEntry
}
func createLayout() *Layout {
layout := new(Layout)
layout.visible = true
return layout
}
func (l *Layout) render(target d2render.Surface) error {
for _, entry := range l.entries {
if entry.widget.isVisible() {
l.renderWidget(entry.widget, target)
l.renderWidgetDebug(entry.widget, target)
}
}
return nil
}
func (l *Layout) advance(elapsed float64) error {
for _, entry := range l.entries {
if entry.widget.isVisible() {
if err := entry.widget.advance(elapsed); err != nil {
return err
}
}
}
return nil
}
func (l *Layout) renderWidget(widget widget, target d2render.Surface) {
target.PushTranslation(widget.getPosition())
defer target.Pop()
widget.render(target)
}
func (l *Layout) renderWidgetDebug(widget widget, target d2render.Surface) {
target.PushTranslation(widget.getPosition())
defer target.Pop()
drawColor := color.RGBA{R: 0x00, G: 0x00, B: 0xff, A: 0xb0}
width, height := widget.getSize()
target.DrawLine(width, 0, drawColor)
target.DrawLine(0, height, drawColor)
target.PushTranslation(width, 0)
target.DrawLine(0, height, drawColor)
target.Pop()
target.PushTranslation(0, height)
target.DrawLine(width, 0, drawColor)
target.Pop()
}
func (l *Layout) getSize() (int, int) {
return 0, 0
}
func (l *Layout) onMouseButtonDown(event d2input.MouseEvent) bool {
for _, entry := range l.entries {
eventLocal := event
if l.adjustEventCoords(entry.widget, &eventLocal.X, &eventLocal.Y) {
entry.mouseDown[event.Button] = true
}
}
return false
}
func (l *Layout) onMouseButtonUp(event d2input.MouseEvent) bool {
for _, entry := range l.entries {
eventLocal := event
if l.adjustEventCoords(entry.widget, &eventLocal.X, &eventLocal.Y) {
if entry.mouseDown[event.Button] {
entry.widget.onMouseClick(eventLocal)
}
}
entry.mouseDown[event.Button] = false
}
return false
}
func (l *Layout) onMouseMove(event d2input.MouseMoveEvent) bool {
for _, entry := range l.entries {
eventLocal := event
if l.adjustEventCoords(entry.widget, &eventLocal.X, &eventLocal.Y) {
if entry.mouseOver {
entry.widget.onMouseOver(eventLocal)
} else {
entry.widget.onMouseEnter(eventLocal)
}
entry.mouseOver = true
} else if entry.mouseOver {
entry.widget.onMouseLeave(eventLocal)
entry.mouseOver = false
}
}
return false
}
func (l *Layout) adjustEventCoords(widget widget, eventX, eventY *int) bool {
x, y := widget.getPosition()
width, height := widget.getSize()
*eventX -= x
*eventY -= y
if *eventX < 0 || *eventY < 0 || *eventX >= width || *eventY >= height {
return false
}
return true
}
func (l *Layout) addLayout() *Layout {
layout := createLayout()
l.entries = append(l.entries, &layoutEntry{widget: layout})
return layout
}
func (l *Layout) addSprite(imagePath, palettePath string) *Sprite {
sprite := createSprite(imagePath, palettePath)
l.entries = append(l.entries, &layoutEntry{widget: sprite})
return sprite
}
func (l *Layout) addLabel(text string, fontStyle FontStyle) *Label {
label := createLabel(text, fontStyle)
l.entries = append(l.entries, &layoutEntry{widget: label})
return label
}
func (l *Layout) clear() {
l.entries = nil
}