Noah Petherbridge
36db160533
* Fix Supervisor event issues wrt. the window manager feature: if a focused window exists and Supervisor is running events for the "other" widgets not in managed windows, and the mouse cursor is over the rectangle of THE focused window, no widget under the cursor receives active (hover, click) events. Prevents being able to click "through" the window and interact with widgets and other windows below. * Adds Close, Maximize and Minimize buttons to windows. Maximize is still buggy and Minimize is implementation-defined behavior with no default event handler configured. * eg/windows has an example of the Window Manager for SDL2 and WebAssembly targets.
116 lines
2.1 KiB
Go
116 lines
2.1 KiB
Go
package main
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import (
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"fmt"
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"os"
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"git.kirsle.net/go/render"
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"git.kirsle.net/go/render/event"
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"git.kirsle.net/go/render/sdl"
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"git.kirsle.net/go/ui"
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)
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// Program globals.
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var (
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// Size of the MainWindow.
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Width = 1024
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Height = 768
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// Cascade offset for creating multiple windows.
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Cascade = render.NewPoint(10, 10)
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CascadeStep = render.NewPoint(24, 24)
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CascadeLoops = 1
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// Colors for each window created.
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WindowColors = []render.Color{
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render.Blue,
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render.Red,
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render.DarkYellow,
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render.DarkGreen,
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render.DarkCyan,
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render.DarkBlue,
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render.DarkRed,
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}
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WindowID int
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OpenWindows int
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)
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func init() {
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sdl.DefaultFontFilename = "../DejaVuSans.ttf"
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}
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func main() {
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mw, err := ui.NewMainWindow("Hello World", Width, Height)
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if err != nil {
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panic(err)
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}
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// Add some windows to play with.
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addWindow(mw)
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addWindow(mw)
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mw.SetBackground(render.White)
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mw.OnLoop(func(e *event.State) {
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if e.Escape {
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os.Exit(0)
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}
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})
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mw.MainLoop()
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}
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// Add a new child window.
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func addWindow(mw *ui.MainWindow) {
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var (
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color = WindowColors[WindowID%len(WindowColors)]
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title = fmt.Sprintf("Window %d", WindowID+1)
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)
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WindowID++
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win1 := ui.NewWindow(title)
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win1.SetButtons(ui.CloseButton)
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win1.ActiveTitleBackground = color
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win1.InactiveTitleBackground = color.Darken(60)
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win1.InactiveTitleForeground = render.Grey
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win1.Configure(ui.Config{
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Width: 320,
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Height: 240,
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})
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win1.Compute(mw.Engine)
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win1.Supervise(mw.Supervisor())
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// Re-open a window when the last one is closed.
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OpenWindows++
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win1.Handle(ui.CloseWindow, func(ed ui.EventData) error {
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OpenWindows--
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if OpenWindows <= 0 {
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addWindow(mw)
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}
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return nil
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})
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// Default placement via cascade.
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win1.MoveTo(Cascade)
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Cascade.Add(CascadeStep)
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if Cascade.Y > Height-240-64 {
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CascadeLoops++
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Cascade.Y = 24
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Cascade.X = 24 * CascadeLoops
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}
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// Add a window duplicator button.
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btn2 := ui.NewButton(title+":Button2", ui.NewLabel(ui.Label{
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Text: "New Window",
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}))
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btn2.Handle(ui.Click, func(ed ui.EventData) error {
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addWindow(mw)
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return nil
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})
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mw.Add(btn2)
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win1.Place(btn2, ui.Place{
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Top: 10,
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Right: 10,
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})
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}
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