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widget.go
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widget.go
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package dc6widget
import (
"encoding/json"
"fmt"
"log"
"time"
"github.com/OpenDiablo2/dialog"
"github.com/ianling/giu"
"github.com/ianling/imgui-go"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2fileformats/d2dc6"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
"github.com/OpenDiablo2/HellSpawner/hscommon"
"github.com/OpenDiablo2/HellSpawner/hscommon/hsutil"
"github.com/OpenDiablo2/HellSpawner/hswidget"
)
const (
comboW = 125
inputIntW = 30
playPauseButtonSize = 15
buttonW, buttonH = 200, 30
)
const (
maxAlpha = uint8(255)
)
// widget represents dc6viewer's widget
type widget struct {
id string
dc6 *d2dc6.DC6
textureLoader hscommon.TextureLoader
palette *[256]d2interface.Color
}
// Create creates new widget
func Create(state []byte, palette *[256]d2interface.Color, textureLoader hscommon.TextureLoader, id string, dc6 *d2dc6.DC6) giu.Widget {
result := &widget{
id: id,
dc6: dc6,
textureLoader: textureLoader,
palette: palette,
}
if giu.Context.GetState(result.getStateID()) == nil && state != nil {
s := result.getState()
if err := json.Unmarshal(state, s); err != nil {
log.Printf("error decoding dc6 widget state: %v", err)
}
s.ticker.Reset(time.Second * time.Duration(s.TickTime) / miliseconds)
if s.Mode == dc6WidgetTiledView {
result.createImage(s)
}
result.setState(s)
}
return result
}
// Build builds a widget
func (p *widget) Build() {
state := p.getState()
switch state.Mode {
case dc6WidgetViewer:
p.makeViewerLayout().Build()
case dc6WidgetTiledView:
p.makeTiledViewLayout(state).Build()
}
}
func (p *widget) makeViewerLayout() giu.Layout {
viewerState := p.getState()
imageScale := uint32(viewerState.Controls.Scale)
curFrameIndex := int(viewerState.Controls.Frame) + (int(viewerState.Controls.Direction) * int(p.dc6.FramesPerDirection))
dirIdx := int(viewerState.Controls.Direction)
textureIdx := dirIdx*int(p.dc6.FramesPerDirection) + int(viewerState.Controls.Frame)
if imageScale < 1 {
imageScale = 1
}
err := giu.Context.GetRenderer().SetTextureMagFilter(giu.TextureFilterNearest)
if err != nil {
log.Print(err)
}
w := float32(p.dc6.Frames[curFrameIndex].Width * imageScale)
h := float32(p.dc6.Frames[curFrameIndex].Height * imageScale)
var widget *giu.ImageWidget
if viewerState.textures == nil || len(viewerState.textures) <= int(viewerState.Controls.Frame) ||
viewerState.textures[curFrameIndex] == nil {
widget = giu.Image(nil).Size(w, h)
} else {
widget = giu.Image(viewerState.textures[textureIdx]).Size(w, h)
}
return giu.Layout{
giu.Label(fmt.Sprintf(
"Version: %v\t Flags: %b\t Encoding: %v\t",
p.dc6.Version,
int64(p.dc6.Flags),
p.dc6.Encoding,
)),
giu.Label(fmt.Sprintf("Directions: %v\tFrames per Direction: %v", p.dc6.Directions, p.dc6.FramesPerDirection)),
giu.Custom(func() {
imgui.BeginGroup()
if p.dc6.Directions > 1 {
imgui.SliderInt("Direction", &viewerState.Controls.Direction, 0, int32(p.dc6.Directions-1))
}
if p.dc6.FramesPerDirection > 1 {
imgui.SliderInt("Frames", &viewerState.Controls.Frame, 0, int32(p.dc6.FramesPerDirection-1))
}
const minScale, maxScale = 1, 8
imgui.SliderInt("Scale", &viewerState.Controls.Scale, minScale, maxScale)
imgui.EndGroup()
}),
giu.Separator(),
p.makePlayerLayout(viewerState),
giu.Separator(),
widget,
giu.Separator(),
giu.Button("Tiled View##"+p.id+"tiledViewButton").Size(buttonW, buttonH).OnClick(func() {
viewerState.Mode = dc6WidgetTiledView
p.createImage(viewerState)
}),
}
}
func (p *widget) makePlayerLayout(state *widgetState) giu.Layout {
playModeList := make([]string, 0)
for i := playModeForward; i <= playModePingPong; i++ {
playModeList = append(playModeList, i.String())
}
pm := int32(state.PlayMode)
return giu.Layout{
giu.Row(
giu.Checkbox("Loop##"+p.id+"PlayRepeat", &state.Repeat),
giu.Combo("##"+p.id+"PlayModeList", playModeList[state.PlayMode], playModeList, &pm).OnChange(func() {
state.PlayMode = animationPlayMode(pm)
}).Size(comboW),
giu.InputInt("Tick time##"+p.id+"PlayTickTime", &state.TickTime).Size(inputIntW).OnChange(func() {
state.ticker.Reset(time.Second * time.Duration(state.TickTime) / miliseconds)
}),
hswidget.PlayPauseButton("##"+p.id+"PlayPauseAnimation", &state.IsPlaying, p.textureLoader).
Size(playPauseButtonSize, playPauseButtonSize),
giu.Button("Export GIF##"+p.id+"exportGif").OnClick(func() {
err := p.exportGif(state)
if err != nil {
dialog.Message(err.Error()).Error()
}
}),
),
}
}
func (p *widget) makeTiledViewLayout(state *widgetState) giu.Layout {
return giu.Layout{
giu.Row(
giu.Label("Tiled view:"),
giu.InputInt("Width##"+p.id+"tiledWidth", &state.Width).Size(inputIntW).OnChange(func() {
p.recalculateTiledViewHeight(state)
}),
giu.InputInt("Height##"+p.id+"tiledHeight", &state.Height).Size(inputIntW).OnChange(func() {
p.recalculateTiledViewWidth(state)
}),
),
giu.Image(state.tiled).Size(float32(state.Imgw), float32(state.Imgh)),
giu.Button("Back##"+p.id+"tiledBack").Size(buttonW, buttonH).OnClick(func() {
state.Mode = dc6WidgetViewer
}),
}
}
func (p *widget) exportGif(state *widgetState) error {
fpd := int32(p.dc6.FramesPerDirection)
firstFrame := state.Controls.Direction * fpd
images := state.rgb[firstFrame : firstFrame+fpd]
err := hsutil.ExportToGif(images, state.TickTime)
if err != nil {
return fmt.Errorf("error creating gif file: %w", err)
}
return nil
}