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package main
import (
"github.com/kch42/gomcmap/mcmap"
"github.com/mattn/go-gtk/gdk"
"github.com/mattn/go-gtk/glib"
"github.com/mattn/go-gtk/gtk"
"math"
"unsafe"
)
const (
zoom = 2
tileSize = zoom * mcmap.ChunkSizeXZ
)
type GUICallbacks struct {
reportFail func(msg string)
updateInfo func(x, z int, bio mcmap.Biome)
setBusy func(bool)
}
type MapWidget struct {
dArea *gtk.DrawingArea
w, h int
guicbs GUICallbacks
isInit bool
showBiomes bool
offX, offZ int
mx1, mx2, my1, my2 int
continueTool, panning bool
pixmap *gdk.Pixmap
pixmapGC *gdk.GC
gdkwin *gdk.Window
bg *gdk.Pixmap
regWrap *RegionWrapper
redraw chan bool
}
func (mw *MapWidget) calcChunkRect() {
}
func (mw *MapWidget) DArea() *gtk.DrawingArea { return mw.dArea }
func (mw *MapWidget) SetShowBiomes(b bool) {
mw.showBiomes = b
mw.redraw <- true
}
func (mw *MapWidget) SetFixSnowIce(b bool) { mw.regWrap.SetFixSnowIce(b) }
func (mw *MapWidget) SetBiome(bio mcmap.Biome) { mw.regWrap.SetBiome(bio) }
func (mw *MapWidget) SetRegion(region *mcmap.Region) { mw.regWrap.SetRegion(region) }
func (mw *MapWidget) SetTool(t Tool) { mw.regWrap.SetTool(t) }
func (mw *MapWidget) Save() { mw.regWrap.Save() }
func (mw *MapWidget) updateChunkBounds() {
startX := int(math.Floor(float64(mw.offX) / tileSize))
startZ := int(math.Floor(float64(mw.offZ) / tileSize))
endX := int(math.Ceil(float64(mw.offX+mw.w) / tileSize))
endZ := int(math.Ceil(float64(mw.offZ+mw.h) / tileSize))
mw.regWrap.SetChunkBounds(startX, startZ, endX, endZ)
}
func (mw *MapWidget) movement(ctx *glib.CallbackContext) {
if mw.gdkwin == nil {
mw.gdkwin = mw.dArea.GetWindow()
}
arg := ctx.Args(0)
mev := *(**gdk.EventMotion)(unsafe.Pointer(&arg))
var mt gdk.ModifierType
if mev.IsHint != 0 {
mw.gdkwin.GetPointer(&(mw.mx2), &(mw.my2), &mt)
} else {
mw.mx2, mw.my2 = int(mev.X), int(mev.Y)
}
x := (mw.offX + mw.mx2) / zoom
z := (mw.offZ + mw.my2) / zoom
bio := mcmap.Biome(mcmap.BioUncalculated)
if _bio, ok := mw.regWrap.GetBiomeAt(x, z); ok {
bio = _bio
}
mw.guicbs.updateInfo(x, z, bio)
if mw.panning {
if (mw.mx1 != -1) && (mw.my1 != -1) {
mw.offX += mw.mx1 - mw.mx2
mw.offZ += mw.my1 - mw.my2
gdk.ThreadsLeave()
mw.redraw <- true
gdk.ThreadsEnter()
}
}
if mw.continueTool {
mw.regWrap.UseTool(x, z)
gdk.ThreadsLeave()
mw.redraw <- true
gdk.ThreadsEnter()
}
mw.mx1, mw.my1 = mw.mx2, mw.my2
}
func (mw *MapWidget) buttonChanged(ctx *glib.CallbackContext) {
arg := ctx.Args(0)
bev := *(**gdk.EventButton)(unsafe.Pointer(&arg))
switch gdk.EventType(bev.Type) {
case gdk.BUTTON_RELEASE:
if mw.panning {
mw.panning = false
mw.updateChunkBounds()
gdk.ThreadsLeave()
mw.regWrap.UpdateTiles()
gdk.ThreadsEnter()
}
mw.continueTool = false
case gdk.BUTTON_PRESS:
switch bev.Button {
case 1:
if !mw.regWrap.RegionLoaded() {
return
}
x := (mw.offX + int(bev.X)) / zoom
z := (mw.offZ + int(bev.Y)) / zoom
mw.regWrap.UseTool(x, z)
gdk.ThreadsLeave()
mw.redraw <- true
gdk.ThreadsEnter()
if !mw.regWrap.ToolSingleClick() {
mw.continueTool = true
}
case 2:
mw.panning = true
}
}
}
var (
checker1 = gdk.NewColor("#222222")
checker2 = gdk.NewColor("#444444")
)
func (mw *MapWidget) drawBg() {
if mw.bg != nil {
mw.bg.Unref()
}
mw.bg = emptyPixmap(mw.w, mw.h, 24)
drawable := mw.bg.GetDrawable()
gc := gdk.NewGC(drawable)
w := int(math.Ceil(float64(mw.w) / 32))
h := int(math.Ceil(float64(mw.h) / 32))
for y := 0; y < h; y++ {
for x := 0; x < w; x++ {
if (x % 2) == (y % 2) {
gc.SetRgbFgColor(checker1)
} else {
gc.SetRgbFgColor(checker2)
}
drawable.DrawRectangle(gc, true, x*32, y*32, 32, 32)
}
}
}
func (mw *MapWidget) configure() {
if mw.pixmap != nil {
mw.pixmap.Unref()
}
alloc := mw.dArea.GetAllocation()
mw.w = alloc.Width
mw.h = alloc.Height
if !mw.isInit {
mw.offX = -(mw.w / 2)
mw.offZ = -(mw.h / 2)
mw.updateChunkBounds()
mw.isInit = true
}
mw.pixmap = gdk.NewPixmap(mw.dArea.GetWindow().GetDrawable(), mw.w, mw.h, 24)
mw.pixmapGC = gdk.NewGC(mw.pixmap.GetDrawable())
mw.drawBg()
gdk.ThreadsLeave()
mw.redraw <- true
gdk.ThreadsEnter()
}
func (mw *MapWidget) compose() {
drawable := mw.pixmap.GetDrawable()
gc := mw.pixmapGC
drawable.DrawDrawable(gc, mw.bg.GetDrawable(), 0, 0, 0, 0, -1, -1)
var tiles map[XZPos]*gdk.Pixmap
if mw.showBiomes {
tiles = mw.regWrap.Biotiles
} else {
tiles = mw.regWrap.Maptiles
}
for pos, tile := range tiles {
x := (pos.X * tileSize) - mw.offX
y := (pos.Z * tileSize) - mw.offZ
drawable.DrawDrawable(gc, tile.GetDrawable(), 0, 0, x, y, tileSize, tileSize)
}
}
func (mw *MapWidget) expose() {
mw.dArea.GetWindow().GetDrawable().DrawDrawable(mw.pixmapGC, mw.pixmap.GetDrawable(), 0, 0, 0, 0, -1, -1)
}
func (mw *MapWidget) guiUpdater() {
for _ = range mw.redraw {
gdk.ThreadsEnter()
mw.compose()
mw.expose()
mw.dArea.GetWindow().Invalidate(nil, false)
gdk.ThreadsLeave()
}
}
func NewMapWidget(guicbs GUICallbacks) *MapWidget {
dArea := gtk.NewDrawingArea()
redraw := make(chan bool)
mw := &MapWidget{
dArea: dArea,
guicbs: guicbs,
redraw: redraw,
showBiomes: true,
regWrap: NewRegionWrapper(redraw, guicbs),
mx1: -1,
my1: -1,
}
go mw.guiUpdater()
dArea.Connect("configure-event", mw.configure)
dArea.Connect("expose-event", mw.expose)
dArea.Connect("motion-notify-event", mw.movement)
dArea.Connect("button-press-event", mw.buttonChanged)
dArea.Connect("button-release-event", mw.buttonChanged)
dArea.SetEvents(int(gdk.POINTER_MOTION_MASK | gdk.POINTER_MOTION_HINT_MASK | gdk.BUTTON_PRESS_MASK | gdk.BUTTON_RELEASE_MASK))
return mw
}
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