102 lines
1.7 KiB
Go
102 lines
1.7 KiB
Go
package platform
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import "aego/core/errs"
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type VSyncMode uint8
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const (
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VSyncOff VSyncMode = iota
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VSyncOn
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VSyncAdaptive
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)
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func (m VSyncMode) String() string {
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switch m {
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case VSyncOff:
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return "off"
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case VSyncOn:
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return "on"
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case VSyncAdaptive:
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return "adaptive"
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}
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return "unknown"
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}
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func ParseVSync(s string) (VSyncMode, error) {
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switch s {
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case "off", "0", "false":
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return VSyncOff, nil
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case "on", "1", "true":
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return VSyncOn, nil
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case "adaptive", "-1":
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return VSyncAdaptive, nil
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}
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return VSyncOff, errs.New(errs.PlatformConfig, "unknown vsync mode: "+s)
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}
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type WindowDesc struct {
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Title string
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Width int
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Height int
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Resizable bool
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Fullscreen bool
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HighDPI bool
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SRGB bool
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Debug bool
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// Hidden creates an unmapped window with a current GL context.
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Hidden bool
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VSync VSyncMode
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}
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type WindowMetrics struct {
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LogicalW, LogicalH int
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PixelW, PixelH int
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PixelDensity float32
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DisplayScale float32
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}
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func (m WindowMetrics) Aspect() float32 {
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if m.PixelH == 0 {
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return 1
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}
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return float32(m.PixelW) / float32(m.PixelH)
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}
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func (m WindowMetrics) Density() float32 {
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if m.LogicalW > 0 && m.PixelW > 0 {
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return float32(m.PixelW) / float32(m.LogicalW)
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}
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if m.PixelDensity > 0 {
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return m.PixelDensity
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}
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return 1
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}
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func (m WindowMetrics) UIScale() float32 {
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if m.DisplayScale > 0 {
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return m.DisplayScale
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}
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return 1
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}
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type Info struct {
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OS, Arch, Backend, Version, VideoDriver string
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}
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type Platform interface {
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CreateWindow(WindowDesc) (Window, error)
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PollEvents(fn func(Event))
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Now() float64
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Info() Info
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Shutdown()
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}
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type Window interface {
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Metrics() WindowMetrics
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SetTitle(string)
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SetVSync(VSyncMode) VSyncMode
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SetFullscreen(bool)
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SwapBuffers()
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Close()
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}
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