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110 lines
2.8 KiB
110 lines
2.8 KiB
package cview
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import (
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"fmt"
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"github.com/gdamore/tcell/v2"
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)
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// Example of an application with multiple layouts.
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func ExampleNewApplication() {
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// Initialize application.
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app := NewApplication()
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// Create shared TextView.
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sharedTextView := NewTextView()
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sharedTextView.SetTextAlign(AlignCenter)
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sharedTextView.SetText("Widgets may be re-used between multiple layouts.")
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// Create main layout using Grid.
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mainTextView := NewTextView()
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mainTextView.SetTextAlign(AlignCenter)
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mainTextView.SetText("This is mainLayout.\n\nPress <Tab> to view aboutLayout.")
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mainLayout := NewGrid()
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mainLayout.AddItem(mainTextView, 0, 0, 1, 1, 0, 0, false)
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mainLayout.AddItem(sharedTextView, 1, 0, 1, 1, 0, 0, false)
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// Create about layout using Grid.
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aboutTextView := NewTextView()
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aboutTextView.SetTextAlign(AlignCenter)
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aboutTextView.SetText("cview muti-layout application example\n\nhttps://code.rocketnine.space/tslocum/cview")
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aboutLayout := NewGrid()
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aboutLayout.AddItem(aboutTextView, 0, 0, 1, 1, 0, 0, false)
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aboutLayout.AddItem(sharedTextView, 1, 0, 1, 1, 0, 0, false)
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// Track the current layout.
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currentLayout := 0
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// Set an input capture function that switches between layouts when the tab
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// key is pressed.
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app.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
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if event.Key() == tcell.KeyTab {
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if currentLayout == 0 {
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currentLayout = 1
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app.SetRoot(aboutLayout, true)
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} else {
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currentLayout = 0
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app.SetRoot(mainLayout, true)
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}
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// Return nil to stop propagating the event to any remaining
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// handlers.
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return nil
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}
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// Return the event to continue propagating it.
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return event
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})
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// Run the application.
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app.SetRoot(mainLayout, true)
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if err := app.Run(); err != nil {
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panic(err)
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}
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}
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// Example of an application with mouse support.
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func ExampleApplication_EnableMouse() {
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// Initialize application.
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app := NewApplication()
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// Enable mouse support.
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app.EnableMouse(true)
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// Enable double clicks.
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app.SetDoubleClickInterval(StandardDoubleClick)
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// Create a textview.
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tv := NewTextView()
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tv.SetText("Click somewhere!")
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// Set a mouse capture function which prints where the mouse was clicked.
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app.SetMouseCapture(func(event *tcell.EventMouse, action MouseAction) (*tcell.EventMouse, MouseAction) {
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if action == MouseLeftClick || action == MouseLeftDoubleClick {
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actionLabel := "click"
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if action == MouseLeftDoubleClick {
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actionLabel = "double-click"
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}
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x, y := event.Position()
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fmt.Fprintf(tv, "\nYou %sed at %d,%d! Amazing!", actionLabel, x, y)
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// Return nil to stop propagating the event to any remaining handlers.
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return nil, 0
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}
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// Return the event to continue propagating it.
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return event, action
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})
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// Run the application.
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app.SetRoot(tv, true)
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if err := app.Run(); err != nil {
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panic(err)
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}
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}
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