419 lines
10 KiB
Go
419 lines
10 KiB
Go
package x
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import "image"
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// import "errors"
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import "git.tebibyte.media/tomo/tomo"
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import "git.tebibyte.media/tomo/x/canvas"
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import "git.tebibyte.media/tomo/tomo/data"
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import "git.tebibyte.media/tomo/tomo/input"
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import "git.tebibyte.media/tomo/tomo/event"
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import "git.tebibyte.media/tomo/tomo/canvas"
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import "github.com/jezek/xgb/xproto"
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import "github.com/jezek/xgbutil/ewmh"
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import "github.com/jezek/xgbutil/icccm"
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// import "github.com/jezek/xgbutil/xprop"
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import "github.com/jezek/xgbutil/xevent"
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import "github.com/jezek/xgbutil/xwindow"
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import "github.com/jezek/xgbutil/keybind"
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import "github.com/jezek/xgbutil/mousebind"
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import "github.com/jezek/xgbutil/xgraphics"
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type mainWindow struct { *window }
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type window struct {
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backend *Backend
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xWindow *xwindow.Window
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xImage *xgraphics.Image
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xCanvas *xcanvas.Canvas
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title string
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modalParent *window
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hasModal bool
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shy bool
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visible bool
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metrics struct {
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bounds image.Rectangle
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}
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modifiers input.Modifiers
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mousePosition image.Point
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drags [10]anyBox
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onClose event.FuncBroadcaster
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root anyBox
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focused anyBox
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hovered anyBox
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// TODO: needMinimum and needLayout should be priority queues. for the
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// minimums, we need to start at the deeper parts of the layout tree and
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// go upward towards the top. for the layouts, we need to start at the
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// top of the layout tree and progressively go deeper. this will
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// eliminate redundant layout calculations.
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needMinimum boxSet
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needLayout boxSet
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needDraw boxSet
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needRedo bool
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minimumClean bool
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}
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func (backend *Backend) NewWindow (
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bounds image.Rectangle,
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) (
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output tomo.MainWindow,
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err error,
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) {
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backend.assert()
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window, err := backend.newWindow(bounds, false)
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output = mainWindow { window: window }
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return output, err
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}
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func (backend *Backend) NewPlainWindow (
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bounds image.Rectangle,
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) (
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output tomo.MainWindow,
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err error,
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) {
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backend.assert()
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window, err := backend.newWindow(bounds, false)
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window.setType("dock")
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output = mainWindow { window: window }
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return output, err
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}
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func (backend *Backend) newWindow (
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bounds image.Rectangle,
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override bool,
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) (
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output *window,
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err error,
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) {
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if bounds.Dx() == 0 { bounds.Max.X = bounds.Min.X + 8 }
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if bounds.Dy() == 0 { bounds.Max.Y = bounds.Min.Y + 8 }
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window := &window { backend: backend }
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window.xWindow, err = xwindow.Generate(backend.x)
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if err != nil { return }
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if override {
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err = window.xWindow.CreateChecked (
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backend.x.RootWin(),
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bounds.Min.X, bounds.Min.Y, bounds.Dx(), bounds.Dy(),
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xproto.CwOverrideRedirect, 1)
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} else {
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err = window.xWindow.CreateChecked (
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backend.x.RootWin(),
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bounds.Min.X, bounds.Min.Y, bounds.Dx(), bounds.Dy(), 0)
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}
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if err != nil { return }
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err = window.xWindow.Listen (
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xproto.EventMaskExposure,
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xproto.EventMaskStructureNotify,
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xproto.EventMaskPropertyChange,
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xproto.EventMaskPointerMotion,
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xproto.EventMaskKeyPress,
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xproto.EventMaskKeyRelease,
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xproto.EventMaskButtonPress,
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xproto.EventMaskButtonRelease)
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if err != nil { return }
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window.xWindow.WMGracefulClose (func (xWindow *xwindow.Window) {
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window.Close()
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})
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xevent.ExposeFun(window.handleExpose).
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Connect(backend.x, window.xWindow.Id)
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xevent.ConfigureNotifyFun(window.handleConfigureNotify).
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Connect(backend.x, window.xWindow.Id)
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xevent.KeyPressFun(window.handleKeyPress).
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Connect(backend.x, window.xWindow.Id)
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xevent.KeyReleaseFun(window.handleKeyRelease).
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Connect(backend.x, window.xWindow.Id)
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xevent.ButtonPressFun(window.handleButtonPress).
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Connect(backend.x, window.xWindow.Id)
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xevent.ButtonReleaseFun(window.handleButtonRelease).
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Connect(backend.x, window.xWindow.Id)
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xevent.MotionNotifyFun(window.handleMotionNotify).
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Connect(backend.x, window.xWindow.Id)
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// xevent.SelectionNotifyFun(window.handleSelectionNotify).
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// Connect(backend.x, window.xWindow.Id)
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// xevent.PropertyNotifyFun(window.handlePropertyNotify).
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// Connect(backend.x, window.xWindow.Id)
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// xevent.SelectionClearFun(window.handleSelectionClear).
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// Connect(backend.x, window.xWindow.Id)
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// xevent.SelectionRequestFun(window.handleSelectionRequest).
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// Connect(backend.x, window.xWindow.Id)
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window.metrics.bounds = bounds
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window.doMinimumSize()
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backend.windows[window.xWindow.Id] = window
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output = window
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return
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}
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func (window *window) SetTitle (title string) {
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window.title = title
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ewmh .WmNameSet (window.backend.x, window.xWindow.Id, title)
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icccm.WmNameSet (window.backend.x, window.xWindow.Id, title)
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icccm.WmIconNameSet (window.backend.x, window.xWindow.Id, title)
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}
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func (window *window) SetIcon (sizes ...image.Image) {
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wmIcons := []ewmh.WmIcon { }
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for _, icon := range sizes {
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width := icon.Bounds().Max.X
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height := icon.Bounds().Max.Y
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wmIcon := ewmh.WmIcon {
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Width: uint(width),
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Height: uint(height),
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Data: make([]uint, width * height),
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}
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// manually convert image data beacuse of course we have to do
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// this
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index := 0
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for y := 0; y < height; y ++ {
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for x := 0; x < width; x ++ {
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r, g, b, a := icon.At(x, y).RGBA()
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r >>= 8
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g >>= 8
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b >>= 8
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a >>= 8
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wmIcon.Data[index] =
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(uint(a) << 24) |
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(uint(r) << 16) |
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(uint(g) << 8) |
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(uint(b) << 0)
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index ++
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}}
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wmIcons = append(wmIcons, wmIcon)
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}
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ewmh.WmIconSet (
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window.backend.x,
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window.xWindow.Id,
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wmIcons)
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}
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func (window *window) NewMenu (bounds image.Rectangle) (tomo.Window, error) {
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menu, err := window.backend.newWindow (
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bounds.Add(window.metrics.bounds.Min), true)
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menu.shy = true
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icccm.WmTransientForSet (
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window.backend.x,
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menu.xWindow.Id,
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window.xWindow.Id)
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menu.setType("POPUP_MENU")
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// menu.inheritProperties(window)
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return menu, err
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}
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func (window *window) NewModal (bounds image.Rectangle) (tomo.Window, error) {
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modal, err := window.backend.newWindow (
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bounds.Add(window.metrics.bounds.Min), false)
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icccm.WmTransientForSet (
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window.backend.x,
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modal.xWindow.Id,
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window.xWindow.Id)
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ewmh.WmStateSet (
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window.backend.x,
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modal.xWindow.Id,
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[]string { "_NET_WM_STATE_MODAL" })
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modal.modalParent = window
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window.hasModal = true
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// modal.inheritProperties(window)
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return modal, err
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}
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func (window mainWindow) NewChild (bounds image.Rectangle) (tomo.Window, error) {
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child, err := window.backend.newWindow (
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bounds.Add(window.metrics.bounds.Min), false)
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if err != nil { return nil, err }
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child.setClientLeader(window.window)
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window.setClientLeader(window.window)
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icccm.WmTransientForSet (
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window.backend.x,
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window.xWindow.Id,
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window.xWindow.Id)
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window.setType("UTILITY")
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// window.inheritProperties(window.window)
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return window, err
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}
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func (window *window) Widget () (tomo.Window, error) {
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// TODO
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return nil, nil
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}
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func (window *window) Copy (data.Data) {
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// TODO
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}
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func (window *window) Paste (callback func (data.Data, error), accept ...data.Mime) {
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// TODO
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}
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func (window *window) SetVisible (visible bool) {
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if window.visible == visible { return }
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window.visible = visible
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if window.visible {
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window.xWindow.Map()
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if window.shy { window.grabInput() }
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} else {
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window.xWindow.Unmap()
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if window.shy { window.ungrabInput() }
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}
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}
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func (window *window) Visible () bool {
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return window.visible
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}
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func (window *window) Close () {
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xevent .Detach(window.backend.x, window.xWindow.Id)
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keybind .Detach(window.backend.x, window.xWindow.Id)
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mousebind.Detach(window.backend.x, window.xWindow.Id)
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window.onClose.Broadcast()
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if window.modalParent != nil {
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// we are a modal dialog, so unlock the parent
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window.modalParent.hasModal = false
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}
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window.SetVisible(false)
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window.SetRoot(nil)
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delete(window.backend.windows, window.xWindow.Id)
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window.xWindow.Destroy()
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}
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func (window *window) OnClose (callback func ()) event.Cookie {
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return window.onClose.Connect(callback)
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}
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func (window *window) grabInput () {
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keybind.GrabKeyboard(window.backend.x, window.xWindow.Id)
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mousebind.GrabPointer (
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window.backend.x,
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window.xWindow.Id,
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window.backend.x.RootWin(), 0)
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}
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func (window *window) ungrabInput () {
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keybind.UngrabKeyboard(window.backend.x)
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mousebind.UngrabPointer(window.backend.x)
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}
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func (window *window) setType (ty string) error {
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return ewmh.WmWindowTypeSet (
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window.backend.x,
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window.xWindow.Id,
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[]string { "_NET_WM_WINDOW_TYPE_" + ty })
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}
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func (window *window) setClientLeader (leader *window) error {
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hints, _ := icccm.WmHintsGet(window.backend.x, window.xWindow.Id)
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if hints == nil {
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hints = &icccm.Hints { }
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}
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hints.Flags |= icccm.HintWindowGroup
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hints.WindowGroup = leader.xWindow.Id
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return icccm.WmHintsSet (
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window.backend.x,
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window.xWindow.Id,
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hints)
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}
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func (window *window) reallocateCanvas () {
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var previousWidth, previousHeight int
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if window.xCanvas != nil {
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previousWidth = window.xCanvas.Bounds().Dx()
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previousHeight = window.xCanvas.Bounds().Dy()
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}
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newWidth := window.metrics.bounds.Dx()
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newHeight := window.metrics.bounds.Dy()
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larger := newWidth > previousWidth || newHeight > previousHeight
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smaller := newWidth < previousWidth / 2 || newHeight < previousHeight / 2
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allocStep := 128
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if larger || smaller {
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if window.xCanvas != nil {
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window.xCanvas.Destroy()
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}
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window.xCanvas = xcanvas.NewCanvasFrom(xgraphics.New (
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window.backend.x,
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image.Rect (
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0, 0,
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(newWidth / allocStep + 1) * allocStep,
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(newHeight / allocStep + 1) * allocStep)))
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window.xCanvas.CreatePixmap()
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}
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window.needRedo = true
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}
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func (window *window) pushAll () {
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if window.xCanvas != nil {
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window.xCanvas.Push(window.xWindow.Id)
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}
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}
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func (window *window) pushRegion (region image.Rectangle) {
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if window.xCanvas == nil {
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return
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}
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subCanvas := window.xCanvas.SubCanvas(region)
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if subCanvas == nil {
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return
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}
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subCanvas.(*xcanvas.Canvas).Push(window.xWindow.Id)
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}
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func (window *window) drawBackgroundPart (canvas.Canvas) {
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// no-op for now? maybe eventually windows will be able to have a
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// background
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}
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func (window *window) doMinimumSize () {
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window.minimumClean = true
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size := image.Point { }
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if window.root != nil {
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size = window.root.MinimumSize()
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}
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if size.X < 8 { size.X = 8 }
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if size.Y < 8 { size.Y = 8 }
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icccm.WmNormalHintsSet (
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window.backend.x,
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window.xWindow.Id,
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&icccm.NormalHints {
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Flags: icccm.SizeHintPMinSize,
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MinWidth: uint(size.X),
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MinHeight: uint(size.Y),
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})
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newWidth := window.metrics.bounds.Dx()
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newHeight := window.metrics.bounds.Dy()
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if newWidth < size.X { newWidth = size.X }
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if newHeight < size.Y { newHeight = size.Y }
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if newWidth != window.metrics.bounds.Dx() ||
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newHeight != window.metrics.bounds.Dy() {
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window.xWindow.Resize(newWidth, newHeight)
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}
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}
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