Dmitry Sergeev
48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
package imgui
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import (
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"time"
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cimgui "github.com/AllenDang/cimgui-go/imgui"
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)
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// ImGui context & IO wrapper
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type Context struct {
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ctx *cimgui.Context
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io *cimgui.IO
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lastDrawData *cimgui.DrawData
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}
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func New() *Context {
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ctx := cimgui.CreateContext()
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cimgui.SetCurrentContext(ctx)
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io := cimgui.CurrentIO()
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return &Context{ctx: ctx, io: io}
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}
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func (c *Context) Destroy() {
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cimgui.DestroyContext()
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}
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// Starts new ImGui frame
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// dt - time since last frame
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func (c *Context) BeginFrame(dt time.Duration, winW, winH int32) {
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c.io.SetDeltaTime(float32(dt.Seconds()))
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c.io.SetDisplaySize(cimgui.Vec2{X: float32(winW), Y: float32(winH)})
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cimgui.NewFrame()
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}
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// Ends the frame, renders
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// and returns data for Vulkan
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func (c *Context) EndFrame() *cimgui.DrawData {
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cimgui.EndFrame()
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cimgui.Render()
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c.lastDrawData = cimgui.CurrentDrawData()
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return cimgui.CurrentDrawData()
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}
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// expose io to input backend
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func (c *Context) IO() *cimgui.IO { return c.io }
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func (c *Context) LastDrawData() *cimgui.DrawData { return c.lastDrawData }
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